US38026A - Improved edge-plane for trimming soles of boots - Google Patents

Description

UNITED STATES PATENT OFFICEO JOHN BROOKS AND JOSEPH H. SANFORD, OF NORTH BRIDGEWATER, MASS.

IMPROVED EDGE-PLANE FOR TRIMMING SOLES OF BOOTS, &c.

Specification forming part of Letters Patent No. 38,026, dated March 31, 1863.

To all whom it may concern.-

Beit known that we., JOHN BRooKs and J o- SEPH H. SANFORD, of North Bridgewater, in the county of Plymouth and State of Massachusetts, have invented an Improved Edgeplaue for Trimming Soles of Boots and Shoes, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, making part ot' this specification, in which- Figure l is a front elevation of our improved edge-plane. Fig. 2 is a rear elevation of the same; Fig. 3, a section on the line x a: of Fig. 1; Fig. 4, a view of our improved tool in the act of paring a welt Fig. 5, a plan ofthe segments C and D detached.

The tool known as an edge-plane,7 with which the bootmaker trims the edges of the welts of boots and shoes, has several requisites to suit it to his work, first, the blade must be capable of being easily removed, if necessary, for whetting up or grinding the edge second, the blade should be capable of being moved up to its guard or throat as its edge is ground or worn away, and be firmly held in its required position. These requisites we have obtained in our improved tool, which we will now proceed to describe in such terms that others skilled in the art may understand and use our invention.

In the accompanying drawings, A is the handle, of wood or other suitable material, to which is attached a plate, B. The face of this plate is cut away. forming a recess, c, between the portion b and the rim c. Into this recess the two segments of steel C and D, which form, respectively, the blade and throatguard, are fitted. These segments are held immovably in place by the circular plate E, which projects over their inner edges and is secured to the plate B by the screw d. The ends e of both of these segments are beveled oi', forming cuttingedges. When itis required to remove either of these segments C or D, for the purpose of whetting up or grinding, it is simply necessary to remove the screw d and plate E, when they can be taken out, as required. As the cutting-edge of the segment() is ground or worn away, it is simply necessary to loosen the screw d, when it can be moved up toward the segment D and clamped in the required position. When the segment() is almost entirely worn away, the segments O and D can be reversed and transposed, the segment C occupying the place of the oneD and serving as a guard and the segment D occupying the place of the one G and serving as a cuttingedge.

It will be observed that in the above-described tool the necessary adjustments may be more readily and quickly made than in other instrument s t'or that purpose now in use.

In the welt-trimmer patented by Isaac A. Dunham, September 22, 1857, there is but one cutter or knife-edge, which is moved up to its stationary guard as it is ground or worn away,

and the operation of regrinding the knife is longer and more laborious than in ours, as it cannot be ground with a sharp and perfect corner, except on a grindstone, and if the person using it is not accustomed to grinding such tools it will be necessary to send it to the manufacturer, which expense and trouble is avoided in our improved tool.

What we claim as our invention, and desire to secure by Letters Patent, is

rPhe combination of the knife and guard so constructed and arranged as set forth that they may be reversed and transposed, as described.

JOHN BROOKS. JOSEPH H. SANFORD.

Witnesses EDWIN El. KING-MAN, CHA-s. F. SYLvEsTER.

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