Tag: James H. Polhemus

No. 383,590 – Spokeshave (James H. Polhemus And Bengamin F. Polhemus) (1888)

[paiddownloads id=”437″]383590

UNITED STATES PATENT OFFICE.

_________________

JAMES H. POLHEMUS AND BENGAMIN F. POLHEMUS, OF BROOKLYN, NEW YORK.

SPOKESHAVE.

_________________

SPECIFICATION forming part of Letters Patent No. 383,590, dated May 29, 1888.
Application filed January 20, 1888. Serial No. 261,377. (No model.)

_________________

To all whom it may concern:

Be it known that we, JAMES H. POLHEMUS and BENGAMIN F. POLHEMUS, of Brooklyn, in the county of Kings and State of New York, have invented a new and Improved Spoke-shave, of which the following is a full, clear, and exact description.

Our invention relates to spokeshaves, and has for its object to provide a tool capable of use as readily in curves of small radius as upon a flat surface, and, further, to produce an improvement upon the spokeshave for which Letters Patent No. 368,003 were granted to us August 9, 1887.

The invention consists in the construction and combination of the several parts, as will be hereinafter fully set forth, and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the views.

Figure 1 is a plan view of the complete spoke-shave. Fig. 2 is a transverse section on line x x of Fig. 1. Fig. 3 is a perspective view of the cap-plate. Fig. 4 is a perspective view of the cutting-blade, and Fig. 5 is a perspective view of the cutting-blade and attached adjusting-plate. Fig. 6 is a perspective view of the adjusting-screw.

At each side of the central portion of the tool A, having the ordinary handles, a, and transversely the said tool, vertical ears B are formed, provided near their upper edge with a segmental slot, b, and a parallel integral offset, C, upon the inner face of the base.

In the body D of the tool, intervening the ears B, a central recess, d, is produced, and centrally and transversely the recess a threaded rod, E, is extended, provided with a milled head, e, at one end. One end of the transverse screw-rod is made to turn in an aperture, e’, produced horizontally in the forward wall of the body-recess d, the other end of said rod being journaled in the rear wall of said recess with the head e outside.

A rectangular nut, F, is made to travel in the recess d upon the threaded rod E, and upon said rod E, a short distance from the head, a collar, f, is formed, whereby the rod is prevented from having lateral play in its bearings.

A knife, G, having a central slot, g, is made to slide on the body-surface D over the recess d between the transverse offsets C of the ears B. The knife, as shown in Fig. 1, is also provided with a small rectangular slot, h, to the rear of the main slot g, which slot h is adapted to receive the traveling nut F, whereby, when the screw-rod E is manipulated, the knife is moved backward or forward across the face of the body. In the rear central edge of the knife a slot, h’, is cut, purposed to permit the free action of the screw-collar f’, and also to afford a convenient means for oiling the rear bearing of the said screw-rod.

An adjusting-plate, H, is provided for the knife of essentially the same shape, adapted to cover the upper surface, which adjusting-plate is beveled upon the outer edge and fitted with a central slot, H’, exposing the slot h in the knife, and at each side of the central slot, H’, smaller slots, k’, are produced. The plate H is adjustably held upon the knife by means of screws o, passed through the aforesaid side slots, k’, and entered into the knife, as illustrated in Fig. 5.

The purpose of the plate H is to regulate the delivery of the shaving and cause the tool to cut as well across the grain as with it. In cutting across the grain the plate is slid a proper distance back of the knife-edge, as shown in Fig. 5. A cap-plate, K, is provided adapted to rest upon and partially cover the knife G, which plate rests against the inner surface of the transverse offsets C at the ends, being provided with end shoulders, k, purposed to bear against the rear ends of the said offsets and limit the forward motion of the cap-plate.

Centrally the cap-plate K, near the forward edge, an elongated slot, m, is produced, adapted to register with the slot g in the knife and slot H’ in the adjusting-plate, and through the forward end of the registering slots m, g, and H’ a set-screw, M, is passed into a suitable threaded aperture in the body. At each side of the slot m, a smaller slot, m3, is produced, purposed to accommodate the heads of the screws o.

In operation the set-screw is loosened and the head of the threaded rod E is manipulated to the right or left, accordingly as the knife is to be moved backward or forward. When the proper adjustment has been found, the set-screw is screwed down, the opening in having previously been closed by means of a hinged cover, m’, to keep out the dust, and the said set-screw thereby retains the cover in place, as shown in Fig. 2, and prevents any movement of either the cap-plate or knife.

A guide, M’ consisting of the longitudinal bar m2, having a flat under surface and more or less rounded corners, and provided with integral arms at right angles thereto, is adjustably held within the ears B by thumb-screw N, entering the slot D in said ears, and also the said arms of the guide at their ends. When the guide M’ is thus positioned, the flat under surface thereof is normally in the same horizontal plane with the under flat surface of the body D. A space is, however, made to intervene the opposing edges of the said body D and the guide.

It will be observed that by reason of the slots k’ in the adjusting-plate and the screws o all strain is removed from the clamping-screw M and the knife insured when manipulated a direct throw free from lateral vibration.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is —

1. In a spokeshave, the combination, with the body having a recess in the upper face, a threaded rod held to turn in the body-recess, and a rectangular nut traveling upon said rod in said recess, of a blade adapted to slide upon the body above the recess, having a slot cut therein to receive the nut, an adjusting-plate held to slide upon the knife, provided with guide-slots and guide-screws, a cap~plate resting upon said blade, slotted to accommodate the guide-screws, and a set-screw passing through the cap-plate and blade into the body, substantially as shown and described.

2. In a spokeshave, the combination, with the body having a recess in the upper face, a threaded rod held to turn transversely and horizontally in said body-recess and provided with a head upon the outer end, and a rectangular nut traveling upon said rod in said recess, of a blade adapted to slide upon the body above the recess, having a series of central slots cut therein, one of which is adapted to receive the nut, an adjusting-plate held to slide upon the knife, provided with a central slot, side guide-slots, and guide-screws, a cap-plate resting upon the said blade, provided with shoulders at opposite ends engaging the body, and a central slot and side slots accommodating the guide-screws, and a set-screw passing through the slot of the cap-plate, the central slot of the adjusting-plate, and through the registering slot in the knife into the body, substantially as shown and described.

JAMES H. POLHEMIUS.
BENGAMIN F. POLHEMUS.

Witnesses:
J. F. ACKER, Jr.,
C. SEDGWICK.

No. 368,003 – Spokeshave (James H. Polhemus) (1887)

[paiddownloads id=”424″]368003

UNITED STATES PATENT OFFICE.

_________________

JAMES H. POLHEMUS, OF BROOKLYN, NEW YORK.

SPOKESHAVE.

_________________

SPECIFICATION forming part of Letters Patent No. 368,003, dated August 9, 1887.
Application filed January 25, 1887. Serial No. 225,465. (No model.)

_________________

To all whom it may concern:

Be it known that I, JAMES H. POLHEMUS, of Brooklyn, in the county of Kings and State of New York, have invented a new and Improved Spokeshave, of which the following is a full, clear, and exact description.

My invention relates to an improvement in spokeshaves, and has for its object to provide a tool capable of use as readily in curves of small radius as upon a flat surface.

The invention consists in the construction and combination of the several parts, as will be hereinafter fully described, and set forth in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a plan view of my spokeshave, and Fig. 2 is a central transverse vertical section through line x x of Fig. 1. Fig. 3 is a horizontal section through the central portion of my tool, with the clamp removed and the surface of the blade exposed.

At each side of the central portion of the tool A, having the ordinary handles, a, and transversely the said tool, vertical ears B are formed, provided near their upper edge with a segmental slot, b, and a parallel integral transverse offset, C, upon their inner face at the base, which offset is more or less concaved at its outer end.

In the body D of the tool, intervening the ears B, a more or less V-shaped central recess, d, is produced, which recess is out entirely through said body at the inner end thereof, as illustrated at d’ in Figs. 1 and 3. Within the recess d a pin, e, is secured, upon which pin an angle-lever, E, is pivoted at the intersection of its arms, the short arm of said lever being adapted to reciprocate in the recess d, and having a stud, F, made integral with its upper face near the end, the long arm of said lever being provided with a thumb-rest, f.

A knife, G, having a central slot, g, is made to slide in the body surface D between the transverse offsets C of the ears B. The knife G is also provided with a series of small rectangular slots, H, arranged to the rear of the large slot g, in central alignment therewith, about the sixteenth of an inch intervening each of said small slots, and also the foremost one and the large slot g. When the knife is inserted, as aforesaid, the stud F upon the angle-lever is made to enter the first or foremost rectangular slot H, as shown in Figs. 2 and 3. As the knife becomes narrowed by sharpening and use, the remaining slots H may be brought into contact with the stud F.

The object of the lever-connection with the knife is to adjust the knife-edge, as in a plane, the desired distance over the front edge of the body surface D.

A clamping-plate, K, of substantially the same shape as the knife, provided with an outer beveled edge, k, and a central elongated slot, k’, is made to rest upon the knife G, clamping the same in a given position by means of a screw, L, which, passing through the slot k’ of the clamp-plate and the large slot g of the knife, is screwed into the body D, as shown in Fig. 2.

A guide, M, consisting of the longitudinal bar m, having a flat under surface, m’, and more or less round corners, m2, and provided with integral arms m3 at right angles thereto, is adjustably held within the ears B by thumb-screws N, entering the slots b in said ears and also the arms m3 of the guide at their ends. When the guide M is thus positioned, the flat under surface m’ thereof is normally in the same horizontal plane with the under flat surface n of the body D. A space is, however, made to intervene the opposing edges of the said body D and the guide.

In operation, by pressing with the thumb against the lever E the knife is adjusted as desired and set by the body-screw L. If a plain surface or curve of large radius is to be dressed, the arms of the guide M are secured in the upper corners of the segmental recesses b, as shown in Fig. 2. In this position the device acts as an ordinary tool of its kind. When, however, it is desired for use upon a curve of small radius, the arms of the guide are carried as far down the slot as thought proper, which action throws the under surface of the guide at an angle to the flat under surface of the body, permitting a manipulation of the tool in short curves or in apertures large enough to admit the tool.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is —

1. In a spokeshave, the combination, with the body D, provided with the ears B, having curved slots b, and the blade adjustable on the upper face of the body D between said ears, of the guide M, consisting of the longitudinal bar m, pivotally connected at its ends to the ears B adjacent to the lower end of the blade, and formed with the arms m3, having threaded apertures in their upper ends, and the set-screws N, passing through the slots b into said apertures, substantially as set forth.

2. In a spokeshave, the combination, with the body D and a guide, of the blade G, having slots H g, the lever E, pivoted to the body and having a stud, F, entering the slot H, the clarnping-plate K, having a. slot, k’, and the set-screw L, extending through the slots k’ g into the body D, substantially as set forth.

3. A spokeshave comprising the body D, having the V-shaped slot d’ in its upper face, the ears B B, having slots b, the U-shaped guide M, pivoted at the lower ends of its side arrns, m3, to the lower ends of the ears, and set-screws passed through the slots b into the upper ends of said arms, the lever E, pivoted at e within recess d’, and having a pin, F, the blade G, having a slot, g, and a series of slots, H, into one of which pin F projects, the clamping-plate K, having a slot, k’, and the set-screw L, passed through the slots k’ g into the body, substantially as set forth.

JAMES H. POLHEMUS.

Witnesses:
J. F. ACKER, Jr.,
G. H. POLHEMUS.