US113656A

US113656A - William p

Info

Publication number: US113656A
Authority: US
Publication date: 1871-04-11
Anticipated expiration: 1888-04-11

Description

duidt %tua aan eine,

WLLIAM P. HHARWOOD, OF CAMBRIDGE, NEW YORK, ASSGNOR TO JAMES F. HALL AND JOHN L. MARSHALL, OF SAME PLACE.

Letters Patent No. 113,656, dated April 11, 1871.

MPROVEMENT iN VISES.

'The Schedule referred to in these Lettere Patent and making part of the same.

To all whom it may concern Be it known that I, WILLIAM E. Hnawoon, of ambridge, in the county'of Washington and State of New York, have invented a new and useful Improvement in Bench-Vise; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the parts.

This invention relates to an improved construction of vise for holding tapering articles; and

It consists in forming a recess or semi-cylindrical groove across the face of each jaw of the vise and in iitting therein a movable piece which is of the form of a longitudinal half section of a solid cylinder, the same being provided with slotted ears to adapt it to be held securely in place by means of pins projecting from each end of the jaw, as hereinafter described.

Hitherto the construction of visos of' this class has been objectionable in view of the fact that the movable piece hasbeen so connected with the jaws of the. same as to allow chips and iilings to fall into or accumulate in the space or wedge-like cavity on the upper side ofthe jaws; hence, interruption ofthe operation ofthe vise and ineiciency of the saine for its intended function have resulted. l' remedy these objections and also increase the strength, while lessening the cost of the vise, by the construction hereinafter set forth.

In the drawing- A indicates the frontjaw of the vise.,

B, a screw for moving the same, and which is swiveled in the not I) attached to the block E.

he arno O is formed solid with the jaw A., and extends through a square hole in the block E. On the upper side of this block is formed a seat to receive the baee-plate of the rear jaw F.

Similar letters of reference indicate corresponding The rear edge of the base-plate ofthe jaw F is curved upon the arc of a'circle, 'and has a frange formed upon it which enters a recess or groove formed in the top of the block E, and thus serves as a guida,

support, a-nd brace to the jaw F.

Upon the lower end of the jaw F is formed a semicylindrical projection, provided with a flange upon its lower end, which enters and ts into a recess formed upon the forward side of the upper part of the block E, and which pivots the jaw F to the block E so that the jaw F may turn horizontally to adjust itself to a tapering article to be held horizontally.

The jaw F is secured iu a position parallel with the jaw A by a pin, G, passing through a hole in the base-plate of the said jaw F and into'a hole inthe block E.

ln the face of one of the jaws, as F, is formed a semi-cylindrical recess` in which is placed a semi cylindrical piece, H, to the ends of which are attached or upon them are formed plates or flanges, which enter and work in recesses formed in theends of the jaw F.

The movements ofthe piece H are limited and guided by pins or projections attached to or formed upon the ends of the jaw F, and which enter curved slots in the flanges or plates h', as shown in tig. 1. By this means the piece H can adjust' itself to the taper of an article to be held vertically. The piece-H will also adjust itseli to hold articles with parallel sides, holding themas tirmly as a vise with solid jaws would hold them.

It will be observed that the semi-cylindrical piece H is so nicely fitted in the recess of the jaws (as properly illustrated in g. 2) that if chips, filings, &c., fall'