US254340A - Edge-trimming tool - Google Patents

Description

(Model.)

F..H.LANDBR. EDGE TRIMMING T001..

1%, 254,340.- Patented Feu-28,1882;

FIG. 2

y UNITED STATES PATENT OFFICE. l

FREEDOM H. LANDER, OF LYNN, MASSACHUSETTS.

EDGE-TRIMMING TOOL.

SPECIFICATION forming part of Letters Patent No. 254,340, dated February 28, 1882.

Application filed March 25, 1881. Renewed January 30, 1882. (Model.)

To all whom 'it may concern Be it known that I,`FREEDOM H. LANDER, of Lynn, in the county of Essex and Commonwealth of Massachusetts, have invented certain new and useful Improvements in Edge- Trimming Tools; and I do 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 pertains to makeand use it, reference being had to the accompanying drawings, which form part of this specification. My invention relates to an improvement in that class of edge-trimming tools in which the system of guides and gages is clamped upon the blade of a shoe-knife of ordinary orsuitable construction; and it consists in details of construction hereinafter fully described, and particularly claimed.

In the annexed drawings, Figure l is a side elevation of the tool complete. Fig. 2 shows opposite side. Fig. 3 represents the guide and guard devices detached from the knife. Fig. 4 is an edge view of the same.

In the annexed drawings, A represents the blade, and B the handle, of an ordinary shoeknife, the cutting portion of which is inclined toward its back at an angle of ten degrees, or thereabout, from a point about one inch from the end of said blade to said end.

Fitted to or upon the bladeAis a guard, C, the outer portion of which curves rearward and outward, as shown in Fig. 1. Attached to the guard C is a metallic clamping-plate, D, preferably made of spring-metal, which embraces the blade A with suicient firmness to cause the blade and guard to maintain their relative positions, while at the same time permitting of their ready separation when desired.

The clamping-plate D is attached to the guard C by means of screws a, which pass inward through suitable slots, f f, provided in and through said plate, which slots are placed transversely, so as to permit said plate to have a certain amount of vertical motion with relation to the edges of the guard, whereby the slot a may be increased or decreased to receive blades of various width. Another advantage Vof this movement is that the plate may be moved inward at one end and outward at the other, or vice versa, thus adapting the slot n to lit an inclined as well as a straight edge blade.

The guard G atits outereud,b, turns squarely' forward, so as to embrace the end of the blade A, said end b being also extended downward below the opposite side of said blade and given a wedge-shaped form transversely. To the front portion of the guard G is attached a metallic guide-bar, E, which extends outward along the line of the sloping edge of the blade nearly, but not quite, to the lip b of the guard U. The inclined arm of said bar is rounded and slightly above the edge of the blade A, and thus it serves to protect the work from injury, as well as to facilitate the movement of the tool.

In tools heretofore constructed the bar has been provided with transverse slots and secured to the guard C by means of screws passing through said slots, the latter being arranged in such manner as to permit said bar to have a `certain amount of vertical motion with relation to the side of the blade, and enable it to be placed at a greater or less distance from the cutting-edge thereof; but as the blade wears awayby use and grinding itrecedes backward from the vertical plane of the gage or bar E, and experience has shown that as the distance between the two increases the tool becomes less satisfactory in results and more difficult in operation. To obviate this difficulty, I cut the front edge of the guard G into a circular shape, and concave the edge of the barE to lit upon the same. I 'also modify the shape and size of the slots h, so as to allow the bar E to have a certain longitudinal movement in addition to the vertical movement before described.

From the foregoing it must be understood that the thickness as Well as the style of shaving to be cut by the knife is regulated by adjusting the bar E vertically with reference to the side of the blade in the usual manner, while the forward movement of the bar E along the circular edge ofthe guard C enables the arm of the bar to be more orless inclined, according to the inclination and wear of the blade A.

The tool is operated in the usual manner by inserting the lip b of the guard C within the groove between the sole and boot or shoe upper, with the blade A resting upon said sole and cutting the same when drawn forward.

This device differs from the devices heretofore constructed for similar purposes, first, by having its clamping-plate D provided with slots ff, whereby it may move in said slots the screws a a., to increase or decrease the size of'the slot n, so as to lit whatsoever size or style of blade it becomes desirable to insert therein; and, secondly, by having the front edge of its guard C made circular in form, with the gage E concaved to tit the saine, and provided with slots h h, arranged so that the gage may be moved forward and .backward upon the said edge of the guard C, to more or less incline the arm of the gage whenever the wear or varying inclination of the blade requires.

What I claim as new, and desire to secure by Letters Patent, is-

1. An edge-trilnmin g tool consisting of a guard, C, having a part adapted to be clamped to the blade, as shown, in combination with a guide-bar adjustably connected to said guard stantially as shown.

2. The combination of the guard C, having extension adapted to be clamped to the blade, and a curved section of a guide-bar having shank fitted to said curved section and adjustably connected thereto, and a knife-blade and suitable clamps.

3. The combination, in an edge-trimming tool, of the guide C, provided with curved section on the part adapted to be clamped to the blade, a guard having curved shank adapted thereto and provided with enlarged slots and set-screws, whereby the said guard may be connected to the curved sect-ion and adjusted laterally and longitudinally, as set forth.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

FREE DOM H. LANDER.

Witnesses:

C. B. TUTTLE, W. C. LAMPHIER.

Images