Tag: James M. Burdick

[paiddownloads id=”692″]1069669

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UNITED STATES PATENT OFFICE.

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CHRISTIAN BODMER AND JAMES M. BURDICK, OF NEW BRITAIN, CONNECTICUT, ASSIGNORS TO THE
STANLEY RULE & LEVEL COMPANY, OF NEW BRITAIN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

PLANE-CAP.

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1,069,669. Specification of Letters Patent. Patented Aug. 12, 1913.
Application filed May 5, 1913. Serial No. 765,441.

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To all whom it may concern:

Be it known that we, CHRISTIAN BODMER and JAMES M. BURDICK, citizens of the United States, residing at New Britain, county of Hartford, State of Connecticut, respectively, have invented certain new and useful Improvements in Plane-Caps, of which the following is a full, clear, and exact description.

This invention relates to improvements in the construction of planes and is more particularly concerned with cap pieces for the cutters or plane irons thereof of the type shown in our prior U. S. Patent No. 1,053,274, dated February 18, 1913.

The present invention aims to provide a cap piece of the general type shown in this prior patent, but embodying specific structural improvements.

A preferable embodiment of our improved form of cap piece is illustrated in the accompanying drawings in which —

Figure 1 is a longitudinal sectional view through a standard type of plane equipped with the cap piece of the present invention. Fig. 2 shows a longitudinal section through the palm rest and base sections, detached. Fig. 3 is a view in elevation of the cam lever. Fig. 4 is a bottom plan view of the base plate. Fig. 5 shows a side elevation, partly in section, of a modified form of cap piece, said cap piece being removed from the plane and the parts being shown in cutter clamping position. Fig. 6 is a longitudinal section of the palm rest section thereof, detached. Fig. 7 shows the base plate section thereof in longitudinal section and bottom plan. Fig. 8 is a detail of the clamping lever and its roller.

Referring to the drawings: numeral 1 designates the body of a plane of the channel type provided with side walls 2 and a detachable shoe 3 at the forward end thereof, the usual throat 1a being formed adjacent the forward end of the plane.

4 is a frog or seat for the forward end of the plane iron or cutter.

5 designates an interiorly threaded boss projecting upwardly from the plane body and carrying what is commonly termed a “cap screw” 6, provided with the usual headed end 6a. An adjusting lever 10 has its forward end seated over the boss 5 and is provided with an adjusting head 10a A second adjusting device is shown in the form of a lever member 8 pivotally mounted on the plane body and engaged at its rear end by an adjusting nut 9.

7 designates a plane iron or cutter provided with the usual longitudinal slot therein, this cutter being seated on the body of the plane with its forward end resting on the seat 4, and its cutting edge projecting into the throat 1a, the intermediate portions of the cutter resting respectively over the boss 5 and the end of the adjusting lever 8. The adjusting head 10a of lever 10 seats within the slot of the cutter. It will be, of course, understood that this slot is such as to enable the cutter to be seated on the plane body as described with the cap screw 6 projecting through the slot therein. We lay no claim to the specific structure of such a plane, inasmuch as it merely represents a standard type of plane with which the cap piece forming the subject matter of the present invention may be utilized. This cap piece embodies a base plate 11 having a curved forward end shaped to engage the forward end of the cutter resting on the seat 4, this base rearwardly of its curved end being provided with side flanges 12 preferably curving inwardly as seen in Fig. 4. Centrally of the base and intermediate the side flanges is a key-hole slot 13. Intermediate this lrey-hole slot and its rear end, this base plate is provided with a second and elongated slot 14 having lateral enlargements 14a intermediate its ends. Cooperating with this base member is a hollow convex cap 15 forming a palm rest, this palm rest section being hinged or pivoted to the base by means of a pivot pin 16 which may extend transversely of the base and through the side walls 12 at their forward ends. This palm rest section 15 is of sufficient width to inclose between its sides the rearwardly extending flanged portion of the base member 11, and in line with the narrow portion of the key-hole slot 13 thereof, is provided with an aperture 17 forming therewith an annular locking shoulder. 18 designates a bracket extending inwardly from the inner face of the palm rest section at a point in line with the forward end of the elongated slot 14 in the base member. To this bracket is pivotally secured the forward end of a clamping cam lever 19 which is provided with a cam slot 20 therein adjacent its rear or lower end, this cam slot having at its upper or forward end an angular offset forming a locking shoulder 21. This cam lever extends through the elongated slot 14 in the base and its end slot 20 guides upon a roller 22 journaled in the flanges 12 of the base and positioned within the lateral enlargement 14a of the elongated slot.

With the foregoing description in mind, it will be evident that in use, the plane cutter having been seated on the plane body in the desired position, the base 11 is brought to bring the enlarged end of its key-hole slot over the head 6a of the cap screw and is then moved upwardly to bring the head of the cap screw above the narrow portion of its key-hole slot, the palm rest section of the cap piece during this operation being held in the raised position indicated in dotted lines in Fig. 1. When this has been done, the palm rest section is then swung downwardly toward the base member 11, this movement causing the cam lever 19 to swing downwardly therewith to bring its lower edge into frictional clamping engagement with the upper face of the cutter (or of a clamping plate superposed thereon). This clamping action is effected through the cooperation of the cam slot 20 with the roller 22. When the palm rest section has been moved downwardly relative to the base sufficiently far to clamp the cutter on its seat, the roller 22 will have reached the upper or angularly offset end of the slot and will abut against the locking shoulder 21 formed thereby with the main body of the cam slot. At the same time, the aperture 17 at the forward end of the palm rest section will have been brought about the head ea of the cap screw. The edges of the palm rest adjacent said aperture being located at either side of said cap screw will prevent longitudinal movement of the entire cap piece relative to the cap screw and plane body with which it is rigid. The clamping engagement of the cam lever with the cutter is such that it holds the latter tightly on its seat, and under ordinary service conditions its position will be unchanged. The cutter, however, is always capable of being adjusted by the adjusting means provided without loosening the cap.

The frictional engagement of the cam lever with the cutter is maintained by reason of the engagement of the roller 22 with the locking shoulder 21 of the cam slot which shoulder serves to lock the cap piece in cutter clamping position and against accidental displacement. When it is necessary to detach the entire piece, however, a sharp pull on the palm rest section will move the shoulder 21 beyond the roller 22 and will permit the palm rest section to be raised, this action withdrawing the apertured forward end of the palm rest section from about the head of the cap screw so that the base may be moved relative to the cap screw to bring its head in alinement with the enlarged end of its key-hole slot 13, whereupon the base plate 11 and the attached palm rest section may be lifted from the plane body and from engagement with the cap screw.

In Figs 5 to 8, we have illustrated a modified form of cap piece embodying the same general idea. In Figs. 5 and 7, 11a designates the forward curved end of the base member, and 12a the side flanges thereof, the rear end of the base being preferably raised somewhat as at 13a and having formed in the forward end of its flange portion a key-hole slot 13b, and adjacent its rear end and rearwardly of said key-hole slot, an elongated slot 15a. A hollow convex palm rest section 16a is pivoted at its forward end to the flanges 12a and is provided at its forward end and at a point above the restricted end of the key-hole slot 15a with an aperture 17a providing the palm rest at that point with an annular locking shoulder. From the under face of the palm rest section adjacent the forward end of the slot 15a a bracket 18a extends inwardly. Complemental links 19a are pivoted to this bracket and extend through the elongated slot 15a in the base member. The flanges 12a adjacent their rear ends are provided with complemental alined cam slots 20a, these slots at their rear ends being provided with annular extensions or offsets forming locking shoulders 21a. The links 19a at their rear ends carry a clamping roller 22a whose spindle 23a guides in the cam slots 20a, the width of these slots corresponding substantially to the diameter of the spindle. The operation of this form is substantially the same as that of the first form of the cap piece described. The base member is seated on the cap screw and over the cutter in the same manner and the palm rest section is moved downwardly relative thereto, this movement moving the links 19a and their roller 22a downwardly, the cam slots 20a guiding the roller 22a into frictional clamping engagement with the upper face of the cutter and the spindles 23a of this roller seating at the end of its clamping roller in the offset extensions of these cam slots and engaging the locking shoulders to detachably lock the cap 6 in clamping frictional engagement with the cutter.

While we have herein illustrated preferable embodiments of the invention, it will, of course, be evident that the same is susceptible of modification in structure and relative arrangement of parts, within the spirit of the invention and the scope of the appended claims.

What we claim, therefore, and desire to secure by Letters Patent is :–

1. A cap piece for use in connection with plane bodies provided with abutment studs projecting upwardly from the cutter seats thereon, comprising a base adapted to be seated over a cutter, a palm rest pivotally secured to said base, a clamping lever carried by one of said parts, arranged upon movement of said palm rest relative to said base, to cooperate with means carried by the other of said parts to thereby clamp a cutter on its seat, said clamping means including a cam on one of said cooperating parts having a locking shoulder thereon, and a member carried by the other of said parts engaging said cam and arranged to engage said shoulder to lock said clamping lever in cutter clamping position.

2. A cap piece for use in connection with plane bodies provided with abutment studs projecting upwardly from the cutter seats thereon, comprising a base adapted to be seated over a cutter with its abutment stud projecting therethrough, a palm rest pivotally secured to said base and provided with a shoulder arranged to engage said stud upon relative movement of said palm rest and base, a clamping lever carried by one of said parts arranged, upon such relative movement, to cooperate with means carried by the other of said parts to thereby move said lever to clamp a cutter on its seat, said clamping means including a cam on one of said cooperating parts having a locking shoulder thereon, and a member carried by the other of said parts engaging said cam and arranged, upon such relative movement, to engage said shoulder whereby said clamping lever is detachably locked in cutter clamping position.

3. A cap piece for use in connection with plane bodies provided with abutment studs projecting upwardly from the cutter seats thereon, comprising a base adapted to be seated over a cutter, a palm rest pivotally secured to said base, a clamping lever pivotally carried by said palm rest and guiding on said base, a cam slot formed in one of said parts, said slot having an offset therein forming a locking shoulder, and a stud carried by the other of said parts engaging in said cam slot and arranged upon movement of said palm rest relative to said base, to move said clamping lever into frictional clamping engagement with a plane cutter, said stud at the end of such clamping movement, being positioned within said slot offset and against said shoulder to thereby detachably lock said parts in counter clamping position.

4. A cap piece for use in connection with plane bodies provided with abutment studs projecting upwardly from the cutter seats thereon, comprising a base adapted to be seated over a cutter with its abutment stud projecting therethrough, a palm rest pivotally secured to said base and provided with a shoulder arranged to engage said stud upon relative movement of said palm rest and base, a clamping lever pivotally carried by said palm rest and guiding on said base, and arranged, upon such relative movement of the parts, to cooperate with means carried by said base to clamp a cutter on its seat, said clamping means including a cam slot formed in one of said parts and having an offset thereon providing a locking shoulder or abutment, and a stud carried by the other of said parts engaging in said cam slot and arranged, upon movement of said palm rest relative to said base, to move said clamping lever into frictional clamping engagement with a plane cutter, said stud engaging with said shoulder or abutment at the end of such relative movement, to detachably lock said clamping lever in cutter clamping position.

CHRISTIAN BODMER.
JAMES M. BURDICK.

Witnesses:
ALBERT W. RITTER,
PHILIP B. STANLEY.

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Copies of this patent may be obtained for five cents each, by addressing the “Commissioner of Patents, Washington, D. C.”
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[paiddownloads id=”688″]1053274

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UNITED STATES PATENT OFFICE.

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JAMES M. BURDICK AND CHRISTIAN BODMER, OF NEW BRITAIN, CONNECTICUT, ASSIGNORS TO THE
STANLEY RULE & LEVEL COMPANY, OF NEW BRITAIN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

PLANE.

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1,053,274. Specification of Letters Patent. Patented feb. 21, 1913.
Application filed July 11, 1912. Serial No. 708,762.

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To all whom it may concern:

Be it known that we, JAMES M. BURDICK and CHRISTIAN BODMER, citizens of the United States, residing at New Britain, Hartford county, State of Connecticut, respectively, have invented certain new and useful Improvements in Planes, of which the following is a full, clear, and exact description.

This invention relates to an improvement in the construction of planes, and is more particularly concerned with the construction of a detachable cap piece for the cutter or “plane iron”. In such cap pieces, it has hitherto been the practice to provide a detachable cap piece provided with means for engaging with the cutter and clamping it in position upon its seat upon the plane body.

Our invention contemplates employing such a cap piece and utilizing one of the parts thereof as a palm rest. More specifically, the invention contemplates the employement of a base plate adapted to be seated over the cutter and a relatively movable palm rest portion, the cutter clamping means being carried by said cap piece and placed in clamping position by the movement of the palm rest relative to the base plate when the cap is seated on the plane over the cutter. In such a construction the locking parts are housed within the palm rest portion of the cap and thereby protected against accidental displacement. Furthermore, the cap is locked against loosening movement on the plane after the parts have once been moved to clamping position. Such a construction is shown and broadly claimed in our co-pending application Serial No. 708,733.

Our present invention comprises a new specific embodiment of the broad combinations of structure contained in said co-pending application and comprises more especially the specific combinations of parts recited in detail in the following specification and illustrated in the accompanying drawings.

In the drawings: Figure 1 is a longitudinal sectional view through a standard type of plane equipped with a detachable cap constructed in accordance with the present invention. Fig. 2 is a longitudinal section through a modified form of cap detached from the plane body.

Referring to the drawings by numerals: 1 designates the body of a plane provided with side walls or flanges 2 and a detachable shoe 3 at the forward end thereof, a throat 1a being formed at the forward end of the plane and in the rear of the detachable shoe portion thereof. 4 designates a frog or seat for the forward end of the “plane iron” or cutter, and 5 an interiorly threaded boss projecting upwardly from the plane body and carrying what is commonly termed a “cap screw” 6 provided with the usual headed end 6a. An adjusting lever 10 has its forward end seated over the boss 5 and is provided with an adjusting head 10a. To the rear of said head is a second adjusting device comprising a lever member 8 plvotally mounted at its forward end in the plane body and engaged at its rear end by an adjusting nut 9. A “plane iron” or cutter 7 is seated on the body of the plane with its forward end resting upon the frog or seat A and its cutting edge projecting into the throat 1a, the intermediate portions of the cutter resting respectively over the forward ends of the adjusting lever 10 and of the second adjusting lever 8. This cutter is provided with the usual longitudinal slot 7a through which the cap screw 6 projects and through and within which the adjusting head 10a extends, and with a plurality of corrugations 7b formed in its under face which are engaged by the forward end of the adjusting lever 8 to effect vertical adjustment of the cutting edge of the cutter. The lever 10, through its adjusting head 10a, effects lateral or angular adjustment of said cutting edge.

The parts so far described are merely those of a standard type of plane which has been selected for the illustrative application of the detachable cap embodying our invention. This cap embodies a base plate 11 having its forward end beveled and adapted for engagement with the forward end of the cutter 7, and is provided with the side walls or flanges 12. A pivot pin 13 extends transversely of the base plate 11 through the side walls 12 thereof, and has pivotally mounted upon its ends the forward ends of a palm rest section 14 the rear portion of which is formed as a hollow convex body serving as a palm rest. The body of the base plate adjacent the location of the forward end of the palm rest section is provided with a key-hole slot 15, and rearwardly thereof and adjacent the end of the base plate, with a second slot 16 through which extends the lower end of a lever member 17 pivotally carried by said base plate by means of the pivot pin 18 extending transversely of the base plate between the side walls 12 thereof. The lower edge of this lever is formed as a cam 19 and its upper end is formed with a curved oifset provided with a curved slot 20 therein. Projecting downwardly from the interior face of the palm rest 14 is an arm or bracket 21 provided with a pin 22 fitting within the curved slot 20 and designed, when the palm rest section is moved relative to the base plate, to cooperate with said slot and the upper end of said lever to move the lower cam end of the lever toward and away from the upper face of the cutter 7, or, when a clamping plate is employed in connection with said cutter, toward and away from said clamping plate. The forward end of the palm rest section of the cap in alinement with the forward edge of the keyhole slot 15 of the base plate, is provided with an aperture 23 designed to lit over the head 6a of the cap screw when the palm rest is moved downwardly, the sides of the palm rest adjacent said aperture forming an annular shoulder engaging the abutment formed by the head of said cap screw.

In Fig. 2, the cap shown therein is provided with the base plate 11, side walls or flanges 12, pivot pin 13, palm rest 14 pivotally carried thereby, keyhole slot 15, a second slot 16 to the rear of said keyhole slot and adjacent the rear of the base plate, and with an aperture 23 in alinement with the forward edge of the keyhole slot, these parts being the same as those shown and described in connection with Fig. 1. The lever member 17a, however, which is pivotally mounted in the base plate by means of the pivot pin 18a and has its lower end formed as a cam 19a is provided with a rearwardly extending offset instead of the forwardly extending curved offset shown in Fig. 1. This rearwardly extending offset is provided with a curved slot 20a and an arm or bracket 21a extending downwardly from the inner face of the palm rest section 14 and carries a pin 22a engaging in and cooperating with the curved slot 20a and the upper end of the lever member 17a’ to move the lower cam end 19a of the lever into and out of clamping engagement with the face of the cutter 7.

The application and operation of both forms of cap is substantially the same, and is as follows: Assuming that the cutter 7 is seated on the plane body and its parts, as is shown in Fig. 1, the detachable cap is seated over said cutter by bringing the enlarged end of the keyhole slot 15 in its base plate 11 over the head of the cap screw 6 and then moving the base plate and its attached palm rest section upwardly on the cutter to bring the narrow portion of the keyhole slot under the head 6a of the cap screw. When this is being done, the palm rest section of the cap is in raised position, as indicated in dotted lines in Fig. 1 of the drawings. After the base plate has been engaged with the cutter and cap screw 6, as described, the palm rest section is swung downwardly relatively to the base plate, this movement, through pins 22–22a, swinging the lower cam edges 19–19a of the clamping levers into frictional clamping engagement with the upper face of the cutter 7 so that by the time the pins 22–22a reach the lower ends of slots 20–20a to stop the further relative movement between the palm rest and base plate, the cam ends 19–19a will have frictionally engaged and securely clamped the cutter 7 in position on the plane body. This clamping engagement is such that it holds the cutter so tightly on its seat that under ordinary service conditions, its position relative to the plane body will remain unchanged. The cutter, however, is always capable of being adjusted without in any way loosening the cap.

Owing to the engagement of the keyhole slot 15 with the cap screw 6, there is a possibility that during service the cap might be loosened and slide longitudinally of the cutter 7 despite the fact that its bottom plate is held to said cutter by the frictional engagement therewith of its clamping lever. The provision of the apertures 23 in the forward end of the palm rest section is designed to prevent any possibility of such movement, and when the palm rest is moved downwardly to actuate the clamping lever to frictional clamping engagement with the cutter, the head 6a of the cap screw projects through this aperture 23, the edges of the palm rest section adjacent said aperture forming annular shoulders engaging the abutment formed by the head of the cap screw and preventing movement of the cap relative to the plane body.

To detach the cap from the plane, it is only necessary to move the palm rest upwardly from the base plate, the application of sufiicient force causing the pin 22 or 22a to move in the curved slot of the clamping lever member and by frictional pressure, move the lower cam end of the lever out of clamping engagement with the cutter 7. When the palm rest has thus been moved upwardly and the cam end of the lever retracted from engagement with the cutter, the forward apertured end of this palm rest section will have been moved from locking engagement with the head of the cap screw, and the base plate 11 may now be moved downwardly on the cutter 7 to bring the enlarged end of the keyhole slot in line with the cap screw 6, whereupon the base plate and its attached palm rest may be removed from the cutter and plane body.

The structure of the cap and its connections is susceptible of modification within the spirit of our invention and the scope of the appended claims.

What we claim, therefore, and desire to secure by Letters Patent is:

1. In a plane, in combination, a body provided with a cutter seat, a cutter positioned thereon, an abutment carried by said body and a detachable cap comprising a base adapted to be seated over said cutter and engage the forward end thereof and also adapted to engage said abutment, and a palm rest pivotally connected adjacent one end to said base between its ends, a separately formed cam lever being pivotally carried by one of said parts in rear of the pivoted end of the palm rest and having a curved slot therein, and a pin being carried by the other of said parts and being seated in said curved slot whereby the movement of said palm rest relative to its base actuates said cam lever to clamp said cutter on its seat.

2. In a plane, in combination, a body provided with a cutter seat, a cutter positioned thereon, an abutment carried by said body and a detachable cap comprising a base adapted to be seated over said cutter and engage the forward end thereof and also adapted to engage said abutment, and a palm rest pivotally connected adjacent one end to said base between its ends, a separately formed cam lever being pivotally carried by one of said parts in rear of the pivoted end of the palm rest and having a curved slot therein, and a pin being carried by the other of said parts and being seated in said curved slot whereby the movement of said palm rest relative to its base actuates said cam lever to clamp said cutter on its seat, the end of said palm rest being provided with a shoulder adapted to engage said abutment upon such movement to thereby lock the cap against movement relative to the abutment and its plane body.

JAMES M. BURDICK.
CHRISTIAN BODMER.

Witnesses:
I. W. CHAPMAN,
W. J. WORAM.

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Copies of this patent may be obtained for five cents each, by addressing the “Commissioner of Patents, Washington, D. C.”
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[paiddownloads id=”687″]1053270

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UNITED STATES PATENT OFFICE.

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CHRISTIAN BODMER AND JAMES M. BURDICK, OF NEW BRITAIN, CONNECTICUT, ASSIGNORS TO THE
STANLEY RULE & LEVEL COMPANY, OF NEW BRITAIN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

PLANE.

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1,053,270. Specification of Letters Patent. Patented Feb. 18, 1913.
Application filed July 10, 1913. Serial No. 708,733.

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To all whom it may concern:

Be it known that we, CHRISTIAN BODMER and JAMES M. BURDICK, citizens of the United States, residing at New Britain, Hartford county, State of Connecticut, have invented certain new and useful Improvements in Planes, of which the following is a full, clear, and exact description.

This invention relates to planes and particularly to an improved form of “plane iron” or cutter cap.

In planes heretofore it has been customary to provide the cutters or “plane irons” with a detachable cap piece adapted to be seated thereover and provided with means for clamping the cutter in its adjusted position on its seat.

Our invention contemplates forming such a detachable cap with a plurality of relatively movable parts, one of which constitutes a palm rest, the cap being provided with means cooperating in one position of the parts to clamp the cutter in position on its seat against accidental displacement and to hold the cap against movement when in such locking position. The clamping of the cutter on its seat is such that it may be adjusted through suitable means without disturbing the position of the cap parts which will act to hold the cutter in its new position against accidental displacement.

In the specific embodiment of the invention selected for illustration, the parts easily susceptible of accidental actuation are housed within the palm rest when the cap is seated over the cutter in clamping position, and are thereby protected against accidental actuation to destroy the adjustment. In addition the positioning of the parts of the cap over the cutter to hold the same upon its seat against accidental displacement serves to retain the cap on the cutter against displacement relative thereto and to the plane, although, of course, adjustment of the cutter itself is possible as already stated. These and other advantages will be seen from the more detailed description following and from the accompanying drawings in which:

Figure 1 is a longitudinal section through a standard type of plane equipped with one form of detachable cutter cap constructed in accordance with our invention. Fig. 2 is a bottom plan view of the cap shown in Fig. 1, detached from the plane. Fig. 3 is a longitudinal section through a detachable cap of slightly modified form with the parts thereof in locking position and the cooperating parts of the plane omitted, the palm rest being shown in dotted lines in raised unlocked position. Fig. 4 is a partial end view of the cap shown in Fig. 3, the palm rest being raised. Fig. 5 is a bottom plan view of the cap shown in Figs. 3 and 4. Fig. 6 is a longitudinal sectional view of another modified form of cap. Fig. 7 is a fragmentary plan view of a cap illustrating a modified form of locking abutment shoulder.

Referring to the drawings by numerals: 1 indicates the body of a plane of conventional design and 2 the side flanges or walls thereof. 3 denotes a detachable shoe carried by the forward end of the plane body, a throat 1a being formed in the body adjacent and to the rear of said shoe.

4 indicates a frog or se-at for the end of the cutter and 5 an interiorly apertured and threaded boss projecting upwardly from the body of the plane intermediate its ends and to the rear of the frog or seat 4. Screwed into the threaded aperture of and extending from the boss 5, is what is commonly termed a “cap screw” 6 forming an abutment for the cap. A plane iron or cutter 7 provided with the usual longitudinal slot 7a and corrugations 7b on its under face, is seated on the plane body with its forward end resting upon the frog 4 and its cutting edge extending into and through the throat 1a. The corrugated under face of the cutter 7 rests upon and is engaged by the toothed end of a pivoted adjusting lever 8 having a cooperating actuator member 9 and designed to be operated to effect vertical adjustment of the cutting edge of the cutter 7 in the usual manner. An adjusting lever 10 is mounted upon the boss 5 and carries an adjusting head 10a which fits through the longitudinal slot forming the cutter, and is adapted to be moved through the lever 10 to effect angular adjustment of the cutting edge of the cutter 7. The cutter itself rests on the plane body with its forward edge supported on the frog or seat 4 and its intermediate portions seated over the ends of adjusting levers 10 and 8. The cap screw 6 extends up through the longitudinal slot 7a formed in the cutter and is provided with the usual shouldered head 6a.

The parts so far described are merely those of a standard type of plane selected as a type appropriate for use with the detachable cap embodying our invention. This cap is preferably formed of either cast iron or steel, or of a combination of both. In Figs. 1 and 2 of the drawings we have shown a cap as formed of cast iron and in Figs. 3, 4, 5 and 6 the cap shown therein illustrates the article as made from steel. Referring more specifically to the construction shown in Figs. 1 and 2, this cap embodies a base plate 11 having a beveled forward edge 11a and side walls 12 extending around the edges of the plate from its forward end. A slot 13 is formed in and extends longitudinally of the base plate from its rear end and terminates at its outer end in a key-hole slotted portion 14. Intermediate of its ends, base plate 11 is formed with bearings 15 projecting inwardly from the side walls 12 and serving as journals for pivot pins 16 on which are pivotally mounted the forward end portions 17 of a hollow convexed body 18 forming a palm rest. A lever 19 extends within the slot 13 adjacent its rear end and is pivotally mounted upon the base plate by means of the pivot pin 20 extending transversely of the base at such point and mounted in the side walls 12 thereof. The lower edge of this lever 19 is formed as a cam 21 and its upper end is shouldered at 22 and a link 23 pivoted thereto at 24. The other end of this link is pivotally carried at 26 by a bearing bracket 25 extending from the under face of the palm rest 18. This palm rest at its forward end and in alinement with the forward or narrow end of the key-hole slot 14, is provided with an aperture 27 designed to fit over the head 6a of the cap screw, the edges of the palm rest adjacent said aperture forming an annular shoulder engaging the abutment formed by the head of said cap screw.

In the operation of the cap thus described, the cutter 7 being seated in proper position on the plane body with its cutting edge suitably adjusted, the base plate is seated over the head of the cap screw 6 with the enlarged portion of the key-hole slot over the head of the screw 6 and is moved upwardly to bring the narrowed portion of the key-hole slot 15 under the head of the cap screw 6. The palm rest 18 (which, when the cap is being mounted on the plane, is in raised position such as indicated in dotted lines in Fig. 1), is now moved downwardly toward the cutter 7 and base plate 11. This movement of the palm rest will, through the connecting link 23, move the lower cam edge 21 of the lever 19 forwardly and into frictional contact with the upper face of cutter 7 (or when a clamping plate is employed in conjunction therewith, into contact with said clamping plate). This action of the cam 21 will cause the cutter to be clamped upon its seat against accidental adjustment destroying movement. The clamping action is such that the cutter is held on its seat with enough force to maintain such position thereon during ordinary use, but as before stated, it can always be adjusted when so held without loosening the cap. The parts are so constructed that during such positioning of the palm rest 18 to effect this clamping action the pivot. 26 will be brought below the “dead center” line between pivots 24 and 16 thereby frictionally locking the parts in such cutter clamping position, the upper end of the link 23 abutting against the under face of the palm rest 18 and preventing further downward movement.

Owing to the engagement of the key-hole slot 14 with the cap screw 6, there is some possibility of the cap loosening and drawing back during use. To prevent such action the palm rest 18 when the parts are moved to clamp the cutter on its seat, moves its aperture 27 over the head 6a of the cap screw so that the sides of the palm rest adjacent said aperture form an annular locking shoulder engaging the abutment formed by the head of said cap screw. As this cap screw is fixed relative to the body of the plane it is evident that movement of the cap relative to said body is impossible.

In the form of the cap shown in Figs. 3, 4 and 5 of the drawings, the cap comprises a base plate 28 having its forward edge shaped for engagement. with the forward edge of the cutter and provided with tianges or side walls 29. A pivot. pin 30 extends transversely of the body of the base plate and between its side walls 29 and serves to pivot on said body the forward ends of a hollow convened body 32 forming a palm rest. The body of the base plate 28 at a point adjacent the said end of the palm rest 32 is provided with a key-hole slot 31 and adjacent its rear end and between its side walls 29 is provided with a second slot 33 through which extends the lower end of a lever 34 pivotally mounted adjacent its lower edge by pivot pin 35 carried by the side walls 29 and extending transversely of the base plate. The lower edge of this lever 34 is formed with a cam 36 and at its upper end, the lever is shouldered at 37. Complemental links 38 are pivotally secured to the upper end of lever 34 by means of the pivot pin 39. These links at their other ends are secured to a bearing bracket 40 carried by the palm rest 32, a pivot pin 41 serving to pivotally attach the forward ends of these links to said bearing bracket. The front end of the palm rest 32 in line with the forward or neck portion of the key-hole slot 31, is provided with an aperture 42 designed, when the palm rest is moved from the position indicated in dotted lines in Fig. 3 to that shown in full lines, to rest over the head 6a of the cap screw 6 of the plane. The action and operation of this form of cap is the same as that of the form shown in Figs. 1 and 2, the two forms differing in detail of construction only.

In Fig. 6 we have shown a further and more radical modification. In the two forms heretofore described, the link connections between the cam lever and the palm rest are locked against accidental retraction when the cap is seated on the plane in cutter clamping position, this being effected in part by the fact that the pivots 26 and 41 of these two respective forms are moved beyond “dead center” when the cap is moved to cutter clamping position. In the present modification, the base plate 43 is provided with side flanges or walls 44, a key-hole slot 45 and a second and rearward slot 46 through which a lever 49 projects, a pivot pin 50 serving to pivotally connect the lower end of the lever to the side walls 44 of the base plate and the parts so far described corresponding substantially to those shown and described in Figs. 3 and 4. At its lower edge the lever 49 is provided with a cam 51 and is shouldered adjacent its upper end at 52, and a link 54 pivotally connected to said upper end by the pivot pin 53. The hollow convened palm rest 48 is pivotally connected to the base plate 43 by means of the pivot pin 47 extending transversely thereof and through the forward ends of its side walls 44. From its interior face and intermediate its ends, a bearing bracket 56 extends and the other and forward end of the link 54 is pivotally connected to this bearing bracket by means of the pivot pin 55. Adjacent its forward end and in line with the forward end of the key-hole slot 45, a palm rest is provided with the locking aperture 57 corresponding in location and action with those shown in the other figures of the drawing. In the use of this modified form of cap, when the base 43 has been seated on the plane body in the usual manner and moved to bring the narrow portion of its key-hole slot 45 under the head of the cap screw 6, the palm rest 48 is moved downwardly relatively to the base plate 43; this movement, through the connecting link 54, swings the lower end of the lever 49 forwardly to bring its cam end 51 into frictional clamping engagement with the upper face of the cutter, further downward movement on the part of the palm rest being prevented by the engagement of the forward end of the link 54 with the upper face of the body of the base plate 43. When the parts are so moved, the aperture 57 in the forward end of the palm rest, will be seated over the head of the cap screw thereby locking the cap against movement relative to said screw. The frictional engagement of the cam end 51 of lever 49 retains said lever and its actuating link in locking position.

In the forms previously described, the cap has been locked against loosening movement by the fact that apertures formed adjacent the forward end of the palm rest section. of the cap have been seated over the head of the cap screw, the sides of the palm rest section adjacent such apertures forming annular locking shoulders. In Fig. 7 we have shown a modification of this locking feature wherein the locking aperture is omitted and a single lip or locking shoulder provided. Referring specifically to Fig. 7, 58 indicates the base plate of a detachable cap and 59 the palm rest section thereof pivotally connected thereto at 60. 61 indicates the forward end of a key-hole slot formed in the base plate, the position of the head of the “cap screw” being indicated in dotted lines at 62. The forward edge of the palm rest section is provided with a central lip or shoulder 63 which, when the cap is seated in cutter clamping position will move down over and abut against the edge of the screw head and lock the cap against displacement relative thereto during service.

In order to detach a cap from the plane, it is only necessary to move the palm rest upwardly from the base-plate, the application of sufiicient pressure thereagainst serving through the connecting links to move the lower cam end of the lever from frictional clamping engagement with the cutter 7. When the palm rest has been thus moved upwardly, the forward apertured or shouldered end of the palm rest section will have been moved out of locking engagement with the head of the cap screw and the base plate may now be moved to bring the enlarged end of its key-hole slot in line with the cap screw 6, whereupon the base plate and its attached palm rest may be removed from the cutter and plane body.

While we have herein described and illustrated specific embodiments of our invention, various modifications thereof are possible within the spirit of the invention and of the appended claims.

What we claim is:

1. In a plane, in combination, a body provided with a cutter seat, a cutter positioned thereon, an abutment carried by said body, and a detachable cap comprising a base adapted to be seated over said cutter and engage the forward end thereof and also adapted to engage said abutment, a palm rest pivotally connected adjacent one end to said base between its ends, and a separately formed cutter clamping member carried by one of said parts in rear of the pivoted end of said palm rest and intermediate the ends of the cap, said member being actuated by the movement of said palm rest relative to said base to clamp said cutter on its seat.

2. In a plane, in combination, a body provided with a cutter seat, a cutter positioned thereon, an abutment carried by said body, and a detachable cap comprising a base adapted to be seated over said cutter and engage the forward end thereof and also adapted to engage said abutment, a palm rest pivotally connected adjacent one end to said base between its ends, and separately formed and cooperating cutter clamping members connected to said base and palm rest and in rear of the pivoted end of said palm rest and intermediate the ends of the cap, said members being actuated by the movement of said palm rest relative to said base to clamp said cutter on its seat.

3. In a plane, in combination, a body provided with a cutter seat, a cutter positioned thereon, an abutment carried by said body, and a detachable cap comprising a base adapted to be seated over said cutter and engage the forward end thereof and also adapted to engage said abutment, a palm rest pivotally connected adjacent one end to said base between its ends, and a separately formed cutter clamping member carried by one of said parts in rear of the pivoted end of said palm rest and intermediate the ends of the cap, said member being actuated by the movement of said palm rest relative to said base to clamp said cutter on its seat, and said palm rest engaging said abutment to lock said cap against movement relative to said abutment and plane body.

4. In a plane, in combination, a body provided with a cutter seat, a cutter positioned thereon, an abutment projecting from said body, and a detachable cap comprising a slotted base adapted to be seated over said cutter to engage said abutment with said abutment projecting through the slot therein, a palm rest pivotally connected adjacent one end to said base, a cam member pivotally carried by said base in rear of the pivoted end of the palm rest, connections between said cam member and said palm rest operative by the movement of said palm rest relative to said base, to actuate said cam member to frictionally clamp said cutter on its seat, said palm rest being provided with an abutment positioned by said locking movement to engage the plane body abutment to thereby lock said base and palm rest against movement relative to said abutment and plane body, said cam member and its connections being so positioned by such locking movement of the palm rest as to automatically lock themselves against accidental retracting movement.

5. In a plane, in combination, a body provided with a cutter seat, a cutter positioned thereon, an abutment projecting upwardly from said body, and a detachable cap comprising a slotted base adapted to be seated over said cutter to engage said abutment with said abutment projecting through the slot therein, a palm rest pivotally connected to said base, a lever pivotally carried by said base and provided with a cam at its lower end, a link pivotally connected to the upper end of said lever and to said palm rest adapted, when said palm rest is moved relative to the base, to actuate said lever and bring its cam in frictional clamping engagement with said cutter, said palm rest being provided with a shoulder adapted to be positioned by said locking movement to engage said abutment and thereby lock said base and palm rest against movement relative to said abutment and plane body, and said link and lever being positioned by such movement to automatically lock themselves against accidental retracting movement.

CHRISTIAN BODMER.
JAMES M. BURDICK.

Witnesses:
ALBERT W. PECK, Jr.,
I. W. CHAPMAN.

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Copies of this patent may be obtained for five cents each, by addressing the “Commissioner of Patents, Washington, D. C.”
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