US834703A - Work-support for carpenters' benches. - Google Patents

Description

, PATENTED OCT. 30, 1906.

. J. BEHRINGER. WORK SUPPORT FOR CARPENTERS, BENGHES.

APPLICATION rmm 11.20.1905.

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UNITED STATES PATENT OFFICE.

' Specification of Letters Patent.

WORK-SUPPORT FOR CARPENTERS BENCHES.

Patented Oct. 30, 1906.

Application filed March 28, 1905. Serial No. 252,467-

To all whom it may concern:

Be it known that I, JOHN BEHRINGER, a citizen of the United States, residing at Baltimore, in the State of Maryland, have invented certain new anduseful Improvements in Work-Supports for Carpenters Benches, of which the following is a specification.

This invention relates to a device to support boards on a carpenters-bench while'the board is being dressed or subjected to the action of woodworking-tools.

Carpenters work-benches are commonly provided near one-end with a clamp or vise in which a stick of wood or a board may be held; but in 'thecase of boards of some length while the vise will clamp one end of such board the other end requiresa support; and the object of this invention is to provide an adjustable supporting device that may be attached to carpenters benches of any construction and any size and without being restricted in adjustment by the means which attaches the device to-the bench.

The accompanying drawings show the invention, in which Figure 1 is aperspective view ofa workbench with the improved support attached and the board shown in broken lines; Fig. 2, a side view of the detached supporting de vice; Fig. 3, a plan view of the adjustable board=support; Fig. 4, a cross-sectional view of the standard.

A rod or standard 1 has two longitudinal grooves 2 3. At its upper end this rod has a laterally-offsetting grip-jaw 4, rovided on its under side with teeth 5, whic will be impressed in the top surface of the work-bench 22. .This gri -jaw also has a vertical stopface 6 on the e'ad 7 and at right angles with respect to the said lateral toothed part.

The head part of the grip-jaw has in its lower side a socket 8, which takes over the top end of the rod 1. A screw 9 is entered downward through the top of the head and takes also firmly holding the clamp from an up or down movement. This clamp has a lateral arm 13, provided with a right-angled end 14, through which a set-screw 15 passes. A

stop-face 16 is on the head 11 at a rightangled position with respect to the lateral arm 13. The two vertical stop-faces 16 and 6 are in alinement and will take against the vertical surface of the side board 23 of the work-bench. The set-screw 15 will press against the said side board of the workbench, and thereby clamp the device to position on the work-bench. Thus the grip-jaw 4 above and the independent clamp'lO below will firmly hold the rod 1 in vertical position alongside of the work-bench. The lower end of the vertical rod cannot swing, but always, remains stationary.

The board-support comprises a lateral prong 17, which is vertically adjustable on the rod 1 without being restricted by the lower clamp 10. To effect this adjustment, the prong 17 is attached to a tubular head 18, which is slidable onthe rod 1, and a setscrew 19 on the head has a point end which takes in the groove 2 on the rod, and thereb holds the prong 17 at any position to whic it may be adjusted on the rod] The prong 17 has a short stud 20 projecting upward and serves to prevent the board 24 that is being supported from slipping off the said supportingprong. The head 18 of the board-support is provided with a lug 21 on the interior, as seen in Fig. 3, which projects into the groove 3 of the rod and prevents the head from rotating on the rod.

As carpenters benches now in use vary in their construction and also in the vertical dimensions of the side board 23 I have found that a work-support should be provided with means on the standard for attaching not only its upper end to the top of the bench, but also independent means vertically adjustable on the standard for attachment to the bench at some point below the top in order to accomplish two results-namely, first to prevent the lower end of the standard from swinging, and,second, to permit the work-supporting prong to be vertically adjusted on the standard without restriction by the said means which prevents swinging. With this in view I have provided a con? struction that will allow the relative vertical positions on the stationary rod or standard 1 of the lower clamp 10 and the supportingprong 17 to be reversed. They may be as shown in full lines in Fig. 2, in which the clamp is above the prong, or may be reversedthat is, the lower clamp may be below the supporting-prong. When in this last-named position on a bench 22, the two faces, 16 and 6 by bearing against the vertical face of the side board 23 of the work-bench maintain an open free space between the rod 1 and said side board that will enable the tubular 1 head 18 of the board-supporting prong to be adjusted up or down when from the construction of the work -':bench the clamp 1=0 has to-be below the boardesupportingv prong.

It will be seen the prong 17 may haveconsiderable variation in its vertically-ad-justed positions.

Having thusrfully described my invention, what I claim as new,- and desire to secure by Letters: Patent, is

'A- worlssupport for carpenters l benches, comprising astandard, provided in opposite faces-with grooves extending throughout the length of the standard, a grip-jaw mounted on the upper endof said standard, and held in fixed position thereon, a coacting grip adjustably mounted on' the standard below said. grip-jaw, and comprising a head receiving the standard, alaterally-extending arm having an upwardly-extendlng portion at its outer end, .a-clamp-screw in said upwardlyextending portion, an abutment carried by the head, and a set-screw carried by the head and engaging in one of the grooves of the standard to fasten the head in adjusted position on the standard and also hold it against rotary movement thereon, and a support for the work adjustably mounted on the. standard and comprising a tubular head receiving the standard and having. an interior lug taking into one .of the grooves in saidstandard, a set-screw in the oppositelside of thehead taking into the other of said grooves and se curing the head in adjusted position, and a lateral prong carried bylsaid head and provided near its outer end with an upwardlyextending stud, substantially as described.

In testimony whereof I allix my. signature in presence of two witnesses.

JOHN BEHRINGER.

Witnesses:

JOHN E. SMITH, E. W. SCARBOROUGH.

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