Tag: Grand Rapids

No. 917,568 – Scraper (Andrew Ekman) (1909)

[paiddownloads id=”660″]917568

UNITED STATES PATENT OFFICE.

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ANDREW EKMAN, OF GRAND RAPIDS, MICHIGAN.

SCRAPER.

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917,568. Specification of Letters Patent. Patented April 6, 1909.
Application filed June 22, 1908. Serial No. 439,883.

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To all whom it may concern:

Be it known that I, ANDREW EKMAN, a citizen of the United States, residing at Grand Rapids, in the county of Kent and State of Michigan, have invented certain new and useful Improvements in Scrapers, of which the following is a specification.

My invention relates to improvements in scrapers for use in scraping and smoothing the surface of lumber, as in the manufacture of furniture, inside finish, &c., and its objects are: first, to provide a means for readily and securely fastening the scraper bit to place in such a manner that there will be no possible chance for it to tremble when being worked upon the surface of lumber, and, second, to provide a means whereby the scraper bit may be readily clamped to place by the use of an eccentric cam without danger of draiving the bit up from the desired position. I attain these objects by the mechanism illustrated in the accompanying drawing, in which —

Figure 1 is a front elevation of the scraper. Fig. 2 is a back elevation of the same. Fig. 3 is a top plan of the same, and Fig. 4 is a transverse section of the same on the line x x of Fig. 2.

Similar letters refer to similar parts throughout the several views.

In the construction of this scraper I make use of a frame A, having handles projecting sidewise from the bit-holding portion of the frame, somewhat after the form of an ordinary spoke shave frame. The bottom, a’ of this frame is thin and broad and has a slot through its center, as at a” in Fig. 4, for the passage of the edge of the bit B, and an integral girth a arranged to bear equally across the entire length of the force of the bit a short distance above the bottom a’ so that with the bit in its proper position, as indicated in Fig. 4, the back of the lower edge of the bit will bear against the bottom a’ with the scraping edge b projecting just far enough below the bottom of the frame to engage the wood being scraped, to the desired depth. To secure the bit to place I provide an eccentric cam C, having a short lever c integral therewith, for actuating the cam to press its edge against the surface of the bit its entire length, thus forcing the upper edge of the bit forward so that its hotly will be forced against the girth a in such a manner that the back surface of the lower edge of the bit will bear heavily against the edge of the bottom a’, in the slot a”, the entire length of the bit, thus readily clamping the bit to place and holding it so securely the whole length that it will be impossible for any portion of the bit to tremble or “chatter” and render the surface being scraped, rough and uneven. This cam may be flattened at the point so that the pressure of the bit against it will hold it to place to retain the bit firmly in position.

I provide for averting the danger of drawing the bit upward with the cam C, by securing a thin metal plate D to the frame in such a manner that one lip thereof will extend upward between the point of the cam and the surface of the bit, so that the movement of the cam when clamping the bit to place will act upon the surface of the plate D, thus having no effect upon the bit to draw it upward. Without this, or some equivalent appliance, this tool would be inoperative, or practically so, for the reason that it would be almost impossible to hold the bit to the desired position while clamping it to place with the cam C. The cam C is pivotally supported in the frame A by means of a rod passing through it and forming short gudgeons projecting from each end, as at c’, into corresponding holes in the frame, as indicated in Figs. 2 and 3, and has a short lever c projecting down from its longitudinal center, with which to actuate it for securing or liberating the bit, as hereinbefore described and as shown in Figs. 2. 3, and 4.

It will be noticed that the bit B, in this tool, inclines to the front, instead of to the back as with planes &c., which position is bit the finished than the cutting designed for use necessary to give to the results of a scraper rather results of a plane, it being after the plane has reduced the surface to as near a finished surface as is possible with a plane, and before the application of sandpaper for a final finish.

I find that the most convenient, and in fact, the only really practical way to pivot the cam C into the frame is to drill a hole through the side of the frame and the length of the cam and pass a rod through of suflicient length to engage the frame at both ends of the cam, in which case the rod must be securely clamped into the cam to avert the danger of its sliding endwise and one end becoming disengaged from the frame. Another object to be carefully provided for is to so place the cam, and so finish its bearing edge, the bearing edge of the girth a and the bearing edge of the bottom plate a’ in the slot a” that the corresponding portions of the bit B will have perfect contact the entire length of the several bearing edges here mentioned. To release the bit B for removing it from the frame, it is only necessary to throw the handle c of the cam C up to the position indicated by the dotted lines in Fig. 4 when the plate D will be released and the bit may be readily removed or inserted.

What I claim as my invention, and desire to secure by Letters Patent, is:

In a furniture scraper, a supporting frame, a thin bottom thereto having a longitudinal slot through it, a girth connecting the sides of the trains above the bottom plate, in position so that a line from the bearing b on the bottom directly across the bearing face of the girth will incline sharply forwad, a bit extending up from the slot to and some distance above the girth, a protecting plate secured to the bottom of the frame and extending up along the surface of the bit, and a cam pivotally secured in the frame in position to bear against the protecting plate and force the bit solidly between the cam and the bearing b in the bottom of the frame on one side, and the girth on on the other side.

Signed at Grand Rapids Michigan June 19th, 1908.

ANDREW EKMAN.

In presence of —
T. M. NESBITT,
GEORGE L. KELNER.

No. 556,835 – Carpenter’s Plane (George S. Smith) (1896)

[paiddownloads id=”527″]556835

UNITED STATES PATENT OFFICE.

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GEORGE S. SMITH, OF GRAND RAPIDS, MICHIGAN.

CARPENTER’S PLANE.

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SPECIFICATION forming part of Letters Patent No. 556,835, dated March 24, 1896.
Application filed April 20, 1894. Serial No. 508,365. (No model.)

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To all whom it may concern:

Be it known that I, GEORGE S. SMITH, a citizen of the United States, residing at Grand Rapids, in the county of Kent and State of Michigan, have invented certain new and useful Improvements in Carpenters’ Planes; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improved carpenter’s plane; and its object is to provide the same with certain new and useful features hereinafter more fully described and particularly pointed out in the claims, reference being had to the accompanying drawings, in which —

Figure 1 is a longitudinal vertical section, on the line 1 1 of Fig. 2, of a device embodying my invention 5 Fig. 2, a plan view of the same with the blade and wedge removed; Fig. 3, a vertical section on the line 3 3 of Fig. 1; Fig. 4, an inclined transverse section on the line 4 4 of Fig. 1, and Fig. 5 details showing openings to receive the adjusting-screw H.
Like letters refer to like parts in all of the figures.

A is the main frame of the plane, B the blade-supporting block, C the blade, D the wedge, E the adjusting-lever, and F the adjusting-screw, all being ot the usual construction.

In a suitable opening near the upper end of the blade-block B and laterally movable therein is a bar G, having a widened outer end, which is formed with lugs G’ to engage the sides of the blade and shift it laterally to square the edge of the same with the under surface of the plane. Said bar G is provided at its lower side with a screw-threaded concave surface engaging the side of a screw H. Said screw is provided with a milled head I and journaled in openings J’ J” in lugs J on the back of the block B. Said openings are elongated in the direction of the bar G, and one of the bearings of the screw H is reduced, and the corresponding opening J” is reduced at the lower end to engage this reduced bearing, whereby the screw is prevented from moving longitudinally.

The bar G is held in place in the block B by a screw K, the head of which screw overlaps said bar at one side for this purpose. By removing this screw K and bar G the screw H may be moved into the upper ends of the openings J’ J” and thence removed longitudinally, and when in place said screw is held by the engaging screw-threaded side of the bar G.

Within a suitable recess in the bottom of the plane and with its rear angle close to the cutting-edge of the blade C is a throat-slide L, having upwardly-projecting bosses L’, extending through elongated openings R. Screws P are inserted in said lugs, whereby the slide L is held in the recess and permitted to move longitudinally therein. A spring N is attached to a suitable yoke-frame M at its upper end and engages the slide L at its lower end to press said slide toward the blade C. A screw O engages said spring and a transverse rib Q, and serves to adjust the spring to determine the approach of the slide L to the blade C and thus adjust the opening or throat in front of said blade. Said block L, being movable and pressed toward the blade C by the spring, will yield to the shaving as it passes through the throat. It can therefore be adjusted very close to the blade and thus cause the tool to do very smooth work.

I am aware that a throat-block of somewhat similar construction to mine and capable of being adjusted to and from the blade has heretofore been patented, but said throat-block was not provided with a spring and was incapable of automatically yielding to the shavings, for which reason it did not prevent clogging of the throat.

I am also aware that an adjustable spring has been proposed to take the place of the sliding throat-block, which spring will of course yield to the shaving passing up through the month of the plane, but it will yield for a time only during the operation of the plane, as the space between its forward surface and the forward wall of the throat soon receives a sufficient quantity of shavings to force and hold the spring into contact with the cutter, thus not only preventing the spring from yielding, but entirely closing the exit for the shavings. By combining the sliding throat-block with a spring, which causes it automatically to yield to the quantity of shavings passing upward into the throat of the plane, said throat will not become choked and an open exit for the shavings is kept at all times, as will be readily seen.

What I claim is —

1. In a plane, the combination with the blade and its supporting-block, said block having elongated openings one of which has a reduced lower end, of a bar, laterally movable in said block, and engaged with said blade, an adjusting-screw for the bar and blade, said screw being seated in said openings in the block and having a reduced end corresponding with the reduction in the end of one of said openings, and a screw in said block, having its head overlapping one side of said bar and securing the same in place.

2. In a plane, the combination with the blade and its supporting-block, said block having an opening near its upper end and also having lugs formed with elongated openings, one of which latter has a reduced lower end, of a bar laterally movable in said block, said bar having a widened end formed with lugs engaging the sides of the blade, an adjusting-screw for the bar and blade, said screw being seated in the openings in the lugs of the block and having a reduced end corresponding with the reduction in the end of one of said openings, and a screw in said block having its head overlapping one side of said bar and securing the same in place.

3. In a plane, the body, having a recess in its under side adjacent to its throat, and also having an elongated opening, an upwardly-projecting rib and a yoke-frame, in combination with a movable throat-block in said recess, having an end extending upward into the throat of the plane and a boss extending through said elongated opening, a screw engaging said boss, a spring secured at its upper end to said yoke-frame and having its lower end engaged with the upturned end of said throat-block, and an adjusting-screw engaging said rib and spring, substantially as described.

4. In a plane, the body having a recess in its under side adjacent to its throat, in combination with a sliding throat-block within said recess, said block having an upturned part, and a spring engaging said upturned part of the throat-block and causing the latter automatically to adjust itself to the quantity of the shavings passing upward into the throat of the plane, substantially as described.

In testimony whereof I affiix my signature in presence of two witnesses.

GEORGE S. SMITH.

Witnesses:
LUTHER V. MOULTON,
LOIS MOULTON.