US135342A - Improvement in carpenters benches - Google Patents

Description

UNITED STATES PATENT OFFICE.

JOSEPH JONES, OF NEWARK, NEW JERSEY, ASSIGNOR TO WILLIAM A. y FREEMAN, OF SAME PLACE. I

IMPROVEMENT IN CARPENTERS BENCHES.

Specification forming partof Letters Patent No.135,342, dated January 28, 1873.

To all whom it may conce/rn:

Be it known that I, JOSEPH J oNEs, of Newark, inthe county of Essex and State of New Jersey, have invented a new and useful Improvement in Carpenters Benches; and I do hereby' declare that the following is a full, clear, and exact description of the same, reference being had to lthe accompanying drawing forming part of this specitication, and in which- Figure l represents a plan of a work-holder constructed in accordance with my invention; Fig. 2, a longitudinal vertical section of the same at the line x Fig. 3, an inverted plan; and Fig. 4, an end view of the forward bench-hook.

Similar letters of reference indicate corresponding parts throughout the several figures of the drawing.

My invention generallyr consists in a combination, with the vusual or forward benchhook, of an adjustable and sliding back benchhook, whereby increased facility is afforded for holding the work to its place and of introducin g or removing the same; also of holdin g or removing work of different sizes or length. The invention also consists in a novel elastic friction device for retaining the forward benchhook at different altitudes from the surface of the bench to suit different thicknesses of work.

Referring to the accompanying drawing, A represents a board or bed-piece having my improved work-holder applied. This bed-piece may be secured by screws or otherwise to the top of a work-bench or be let into the latter,

' or it may form a part of the same. B is the required thickness of work,subject to a con-l trolling or elastic friction, as effected by the springs d d. C is the back bench-hook, carried by a longitudinal slide, D, in the bench or bed-piece A, and which is worked backward by means of a hand-lever, E, and pressed forward by a spring or springs, F F, to force Y the back bench-hook G up against the work, to hold the latter (that may be a board, G) to its place. The springs F F serve to give the hook C a rrn but elastic hold on the work. In addition to this longitudinal adjustment of the back bench-hook O, the same has an independent back-and-forth adjustment to suit Work of different or rather largely-different size or length, for the purpose of approximating the position of the back bench-hook relatively to the front hook, and whereby the movement of the slide D need only be a very restricted one for work of largely-different sizes or length. This independent adjustment of the back bench-hook U is effected by constructing the slide D with a longitudinal slot, e, formed by metallic or other ways H H, along which the hook C is capable of being slid, and which are made to form ratchet-like racks on their under edges; and, furthermore,

connecting the hook C with said racks by a spring pawl or catch, f, made capable of being released from the racks by depressing a stud, g.

When the catch f is released, then the hook G may be independently adjusted back or forth along the slide D, as required, for the purpose hereinbefore named; but when pressure is taken off the stud g, then the catch f holds said hook to the slide, and so that it is only moved in common with the latter by the springs F F or lever Eto admit of the introduction of the work, and to hold on and remove the work, as required. y

Instead of the spring-pawl f and racks H H a simple screw or other clamp might be used for holding the back hook O at any desired point in its adjustment along the slotted slide D.

What is here claimed, and desired to be secured by Letters Patent, is-

1. The combination, with the forward benchhook B, of the back bench-hook G, the slide D, the lever E, and one or more springs, F, substantially as specified.

2. Theindepcndently-adjustablebackbenchhook C, in combination wit-h the slotted slide Stationary pieces o c and legs b b of the bench D, the lever E, and spring or springs F, essenhook B, essentially as and. for the purpose heretially as described. in set forth.

3. The racks H H of the slotted slide D, in JOSEPH JONES. combination with the back bench-hook C and spring pawl or catch f, substantially as spec- Vitnesses: lied. JAS. STANBROUGH,

4. The springs d d, in combination with the l XV. A. FREEMAN, Jr.

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