US393880A

US393880A - Gage-chisel for cutting hinge-recesses

Info

Publication number: US393880A
Authority: US
Publication date: 1888-12-04
Anticipated expiration: 1905-12-04

Description

(No Model.) I

A. T. BINKERD.

GAGE CHISEL FOR CUTTING HINGE REGESSBS.

No. 893,880. Patented Dec. 4, 1888.

I i Z "B I WITNES INVENTOR:

ATTORNEYS.

UNITE STATES PATENT OFFICE.

AARON THOMAS BINKERD, OF ALLEGHENY, ASSIGNOR TO DUNCAN C. \VHITE, OF PITTSBURG, PENNSYLVANIA.

GAGE-CHISEL FOR CUTTING HlNGE-RECESSES.

SPECIFICATION forming part of Letters Patent No. 393,880, dated 13222.11: 2: 4, 1888.

Application filed March 16, 1888. Serial No. 267,331. (No model.)

To all whom it may concern.-

Be it known that I, AARON THOMAS BINK- ERD, of Allegheny, in the county of Allegheny and State of Pennsylvania, have invented a new and lmpror ed Gage-Chisel for Cutting Hinge-Recesses, of which the following is a full, clear, and exact description.

My invention relates to a tool adapted more particularly for scoring or cutting recesses to receive the leaves of butt or other hinges, and has for its object to provide a simple, inexpensive, and efficient tool of this class, by the aid of which hinges of any size may be quickly, easily, and neatly set into work and without the aid of compass, try-square, or ordinary marking-gages.

The invention consists in certain novel features of construction and combinations of parts of the gage-chisel, all as hereinafter described and claimed.

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 side elevation of my improved gage-chisel, and shows also a portion of the edg'ej of a door or other structure into which recesses are to be cut by the chisel to receive hinges. Fig. 2 is awiew taken at right angles to Fig. 1 and with the chisel head partly broken away and in section, and Fig. 3 is a view of the tool at its cutting-face.

The gage-chisel is made with a metal stock, A, having a. square or rectangular lower or outer end portion or head, a, to which the cutters are fixed, as presently explained, and is provided with a suitable handle, B, affording a firm grasp of the tool by one hand while the handle is struck by a hammer in operating the tool.

The chisel-cutters C D E are held by screws 0 d 6, respectively, to three sides or faces of the stock-head a, and so that their cuttingedges, which are sharpened from the inner faces of the cutters, stand at right angles to each other and in the same plane, and with one mitered or beveled side edge of the cutters D E meeting the-opposite mitered or beveled side edges of the cutter C in a manner to cause the tool to make a clean cut or incision having an angular or rectangular outline as it is forced or pressed to the work. \Vasherplates or washers c d 6 may be used under the heads of the screws 0 (l e, if preferred.

In the end of the stock-head (L, and within lugs H H of the gage-plates to be set so that their gaging faces or shoulders h 71 stand the required distance back of the face of the chisel-cutter C, and these gage-plates G are preferably provided with a graduated scale, I,

by which the plates maybe placed with refer once to a fixed mark or index-line, J, on the tool-stock to allow the gage-plates to be set accurately without using a rule or other measure for the purpose.

In using this tool the gage-plates G will be 75 set so that their shoulders It will stand at the same distance from the outer face of the cutter C as the butt or other hinge is to be inserted edgewise into the door K from the door-face It, and the screw F will be set back from the sharp edges of the cutters a distance equaling the thickness of the leaf of the hinge. The hinge will now be laid onto the door and two marks will be madeone at each end of the hingeand one of the cutters, D or E, will be 8 5 held at one of these marks, while the gageplate shoulders h are held to the face k of the door, and the tool will be struck a sharp blow or pressed into. the wood as far as the gagescrew F will allow, and then will be lifted and set along toward the other end mark of the hinge a little distance, and will be again struck into the wood,-and so on until all the wood which is to be removed to form the hinge-recess is scored or cut, and the cutter D or E 5 opposite the one used at the first end mark of the hinge will be set at the other end mark, whereupon the final blow or pressure will be given the tool, and the wood which had been out or scored by the tool, as above described, 10

The same screws d 60 Having thus described my invention, what i I claim as new, and desire to secure by Letters Patent, is-

l. A gage-chisel made with a stock, a cntt'er or cutters held thereto and making an ang gulal' score or incision, a plate or plates held l to the stock to gage the wm'king of the cut 5 ters laterally, and a set-screw titted to the stock and within the angle described by the cutters and to gage their working depth, substantially as herein set forth. l

2. A gage-chisel made with a stock, a cutter or cutters held thereto and making an angular score or incision, a plate or plates held adjustably to the stock to gage for any required lateral working of the cutters, and a set-screw fitted to the stock and within the angle described by the cutters and to gage their working depth, substantially, as herein set forth.

3. The combination, in a gage-chisel, of a stock, A, having a squared head, (I, cutters (I l) E, held to three sides of the head, a gagescrew, I at the end oi." the stock and between the cutters, and a gage plate orplates, G,held 3 adjustably to the stock and provided with a shoulder, 11, all constructed and arranged for operation substantially as herein set forth.

FRANK R. LIGGETT, ARTHUR \VEssEL.