US45813A - William bubnet - Google Patents

Description

UNITED STATES PATENT OFFICE.

VV'ILLIAM BURNET, OF NEV YORK, N. Y.

PAPER-FILE.

Specification forming part of Letters Patent No. 45,813. dated January 10, 1865.

To all whom it may concern:

Be it known that I, WVM. BURNET, of the city, county, and State ot' New York, have made certain new and useful Improvements in Paper-Files. In order that others skilled may understand the method of construction, I hereby declare the following to be an exact description thereof, illustrated by the accompanying drawings, and referred to in this schedule by the letters and tigures marked thereon.

In the drawings, Figure l is a top view of the paper-tile with all the parts together. A A is a thin board, which forms the base ot' the tile; B B a smaller piece lying directly upon it, and in this view is supposed to be transparent, in order that the other parts may be seen. G C is the hinge-bar, lying in a groove in the base of the tile, and in another in the top piece, cut directly across each. The een` ter portion of the hinge-bar is bent into a crank form, upon which the spring D constantly presses. This springis madeeitherof brass or steel, and is riveted at one end to the base piece and vibratesin a slot cut through it. (ShowninFig.2,insectionatd.) Theeudot'the spring is narrowed at its point, to t'all into the crank, and is curved on its extreme end into a hook, so that when the upper leat' is thrown up to its full extent it may be held in place. The hinge-bar is confined tothe two leaves by means of staples or headed rivets.

Fig. 2 shows in longitudinal section the relative position ot' the parts above described, lettered in the same manner as Fig. l.

Operation It will be seen from the drawings that the hinge bar connects the two leaves, as by a hinge which turns on two centers, and that the pressure of the spring always throws the leaves together; hence in use it is only necessary to raise the upper leaf sufficiently to slip in the docketed paper, and it is secured, and so on till the tile is tilled to its capaci t v.

Any paper may be withdrawn by raising the upper leat' and taking out the paper. Closing the lea-t' secures the remainder.

I do not contine myself to the exact proportion ofthe parts as shown, as the upper leat' may be made ofthe same extent as the lower one. Neither do l confine myself to the exact position of the parts. Forinstance, the spring and cranked portion ofthe hinge bar may be placed in the upper leaf, instead of the base, or the parts may be doubled, with one spring in the base and another in the top; and, again, the spring may be made of a stit't'continuous rubber band laid in the groove and fastened at its end by a pin passing' through it, and the other put upon the crank. The leaves also maybe made of tin, sheetiron, or book-binders board.

I am aware that tiles vhave been made for holding docketed papers, as with two leaves secured by elastic bands, with ajoint in the upper leaf, which turns back to show the record on the paper, &c.; but I know of none which secures the results so simply as mine. Therefore, while I do not claim, broadly, the confining papers by means ot' spring-pressure, I do claim- A A tile made of two leaves secured together by a hin ge-bar, and kept together by means ot' vspring pressure thereon, all made and operating substantially as above described, or their mechanical equivalents.

WILLIAM BURNET. Witnesses:

STURGIS M. MoREnoUsE, W. H. FULLER.

Images