US177090A - Improvement in vises - Google Patents

Description

J. EJBRUNDAGE.

vIsE.

Eatented May 9,l 1816.

UNITED STATES PATENT QEEICE.

JAMES E. BRUNDAGE, OF WILLIAMSBURG, BROOKLYN, ASSIGNOR OF ONE- HALF HIS RIGHT TO EUGENE F. BRUNDAGE, OF HARLEM, NEW YORK.

IMPROVEMENT IN VISES'.

Specification forming part of Letters Patent No. 177,090, dated May 9, 1876:; application filed September 15, 1875.

Toall whom t may concern i Be it known that I, JAMES E. BRUNDAGE, of Williamsburg, in the city of Brooklyn, county of Kings and State of New York, have invented an Improved Vise; and I do hereby declare that the following is a full, clear, and exact -description ofthe same, reference being had to the accompanying drawing, making part of this specitcationl My invention relates to a novel mode of providing for the admission of diilerent'thicknesses of Work between the jaws of a vise byrapidly opening and closing the jaws-independently ofthe screw.

The invention consists in the combination of a divided nut, and a device ot' novel construction for operating the same, whereby the nut and screw may be readily disengaged to allowthe movable jaw to be rapidly moved toward or away from the xed. jaw, and again thrown into engagement to providev for the nice adjustment ot' the jaws. 1

In the accompanying drawing, Figure lis a side view of a vise-constructed according to my invention. Fig. 2 is a longitudinal vertical section. Fig. 3 is an end view, partly in section. Fig. 4 is a detail sectional view.

A represents the xed jaw, and B themov able jaw, the bar b of which is hollow and slides in the fixed jaw A, in the usual manner. In the fixed jaw is an upright frame, D, which carries a nut composed of two halves, The upper half, C2, is fixed, and may consist simply of a thread cut in the upper part of the frame D. lrIhe lower half, C1, is

' arranged to slide vertically in the lower art of the frame. lUnder the lower haltl is a We geshaped piece, F, sliding nearly horizontally in the frame D in a groove, d, the bottom of which is an incline plane. The rear or larger end of the wedge F is connected by an arm, l, with a rock-shaft, I, provided with a lever or handle, h, at one end, outside ofthejaw A. When the lever h is elevated the wedge F is drawn outward, so as'to allow the lower halt' of the nut to fall out of contact with the screw G, whereupon the movable jaw B maybe rapidly moved by hand, soas to slide inward or outward, either toward or from the fixed jaw, the bar b sliding in its seat in the fixed jaw. When the leverh is depressed the wedge Fis driven inward and upward on the inclined plane, so as to raise the lower half ot' the nut and throw it into engagement with the thread on the screw Gr, and thus provide for the nice yadjustment of the jaws by means of the screw, and also prevent the moving of the jaw B,

except by turning the screw in the usual manner. A catch, m,.is provided on the jaw A for engagement with the lever IL, to hold it in place when it is depressed to tighten the nut, as shown in Fig. 3. Instead of a straight sliding wedge, as shown, the tightening device may consist of a camor eccentric attached to or connected with the rock-shaft in any snitvable manner, so as to produce a result similar

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