US89019A - Improved file-holder - Google Patents

Description

-..g ,Stuten @patant @fitte ADDlSON P. BROWN, OF WORCESTER, MASSACHUSETTS.

i Letters Patent No. 89,019, dated April 20, 1869; antedated April 10, 1869.

IMPROVED FILE-HOLDER.

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

Be it known that I, ADDISON I?. BROWN, of the city and county of Worcester, and State of Massachusetts, have invented a new and useful Device for Holding Files when used in Filing or Dressing off Surfaces and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure I is a longitudinal elevation;

Figure II, a transverse section; and

Figure III, a ground plan or face View of the bottom of the holder. k

It is well known that in surface-filing the ordinary handle must be removed, that the le may lie flat upon the work it is to pass over.

Various expedients are resorted to among artisans in order to obtain a hold of the le, such as bending the shankthcreof upwards, fastening on a trowel-like shank by means of screws inserted in the le itself, or simply driven on to the tapering-file shank without screws.

My holder consists of two jaws, a fixed or stationary one B', which is'elongated into a file shank-like extremity, A, to receive the 'ordinary handle, and B, an adjustable and movable. jaw.

Screw D passes loosely through an opening in B' into B, where its thread takes effect.

E has its thread or nut in A, and its point loosely spotted into B to' aid D in maintaining the proper position of=B, and securing the vise-like effect of the jaws upon the shank of the file to be used, which is placed in the square-edged channel or opening F, and firmly secured by the two screws.

'lo allow the adjustable jaw B to adapt itself to the variously sized and tapered-file Shanks of commerce, the hole in B', through which screw D passes, is longitudinally elongated, as indicated by the dotted lines H H, thus allowing the screw D to formany angle with the jaw A, that B may be required to assume in properly seizing the file-shank.

To aid still further in this result, the surface upon which the screw-head D bears and takes effect should be slightly rounded, as seenin Fig. III, or the inner shoulder of the screw-head may itself be rounded, so that its outer edge will never bear upon the surface of ,-A, however great the angle at which it is placed. The shank-like extremity'- A maybe turned either toward the point of the file to be used or in the opposite direct-ion, as is usual. Ifhturned toward the point it may be extended, and its extremity bent downward till it rests upon the file itself, or the extremity may be furnished with a regulating screw, so as to make it 'adj ustable to the surface upon which it is required to Vhat I claim as myinvention, and desire to secure by Letters Patent, is-

A file-holder, consisting of the jaws B and B, screws D and E, and shank A, constructed and arranged substantially as described. l

ADDISON P. BROWN.

Witnesses CHAs. H. HAMILTON, FRANK HAMILTON.

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