US710482A - Bench-vise. - Google Patents

Description

Patented 001;. 7, I902.

J. B. LONG.

BENCH VISE.

(Appliagtion filed. Feb. 12, 1902.) 4

(lie Model.)

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JOHN R. LONG, OF WARREN, PENNSYLVANIA.

BENCH-VISE.

SPECIFICATION forming part of Letters Patent No. 710,482, dated October '7, 1902. Application filed February 12, 1902. Serial No. 93,673. (NQmodelJ To alt whom it may concern:

Be it known that I, JOHN R. LONG, a citizen of the United States, residing at \Varren, in the county of Warren and State of Pennsylvania, have invented certain new and useful Improvements in Bench-Vises; and I do declare that the following is afull, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to bench-Vises of a kind which are adapted to be horizontally rotated when free on their supports and to be automatically locked against rotation when the vise is in clamping position, all substantially as shown and described, and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a longitudinal sectional elevation of a vise with all the parts in working position. Fig 2 is a cross-section on line y 3.], Fig. 1. Figs. 3 and I are perspective views of details of the invention, as hereinafter fully described.

A represents what is termed the fixed member of the vise, and B is the movable member. C is the base for said members, upon which the member A is supported, and has a circular cavity or recess in its bottom adapted to rest over or upon the circular projection a centrally of the top of the base 0. The bearing-surface of the fixed member A outside of said cavity is fiat on the said base and has such width of bearing that it will afford frictional locking engagement when the parts are in clamping position.

D is the usual screw for Vises, projecting lengthwise through the arm I) of movable member B and rotatably engaged therewith at its forward end.

The idea of this invention, like those upon which it is an improvement, is to provide antomatic mechanism to prevent rotation of the vise when an article is clamped therein. To these ends I provide what is shown here as a rectangular screw-threaded head F, serving as a nut, adapted to run on screw D or to run said screw through said nut, and thereby control the position of bolt E, of which nut F practically forms a head. The said bolt has a nut 2 on its lower end beneath base G, by which it is fastened beneath and which may be permanently locked or fixed on the bolt, so as to avoid its loosening in action. The

idea now is to cause a tightening of the parts and prevent rotation of bolt member A by producing an upward pull on the bolt E and a downward pressure of the fixed member in its base. This is partly accomplished by means .of tilting brace G, which is pivoted on pin 3 and abuts in a suitable cavity in the bottom of fixed member A. Said brace is provided with shoulders 4, which come at the sides of screwD and are abutted by the square end of nut F, while the forward side projections 5 of said part G come at each side of the web 6, which connects boltE with nut F, and where a pin 7 through holes in the projections 5 and the said web make a pivotallyworking connection between said parts.

It follows with the foregoing construction that when the jaws of the vise are tightened on an article and there occurs an upward pull on screw D in this operation, as there must by the foregoing construction, all the down pressure comes upon member A through inclined rotatable brace G and bolt E, and in this operation there is a slight tilting of said parts, for which provision is made in the con struction. The fixed member A has a circular bearing-seat for brace G, and pin 3 serves to keep said brace in its place.

What I claim is- 1. A vise'consisting of a fixed and a movable member and a base on which the movable member is rotatably supported, and means for locking said parts against rotation comprising a screw, a bolt connecting said movable member with the base andprovided with a threaded head engaged in said screw, and a brace seated in said fixed member, and pivotally connected with the top of said bolt, substantially as described.

2. The fixed and the movable members of the vise, and a base in which they are rotatable, in combination with a screw for clamping said members together, a bolt securing said members to the base having a threaded head on said screw, and an inclined brace connected with said nut and having a rotatable bearing in said fixed member, substantially as described.

WVitness my hand to the foregoing specification this 31st day of January, 1902.

JOHN R. LONG.

Witnesses:

R. B. MOSER, T. M. MADDEN.

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