US409142A - Clamp-file - Google Patents

Description

(No Model.)

CLAMP FILE.

A. DOM. pi

Patented Aug. 13, 1889.

UNITED STATES PATENT OFFICE;

ALEXANDER DOM, OF MOUNT HEALTHY, OHIO.

CLAMP-FILE.

SPECIFICATION forming part of Letters Patent No. 409,142, dated August 13, 1889.

Application filed June 1'7, 1889.

To all whom it may concern:

Be it known that I, ALEXANDER DOM, a citizen of the United States, residing at Mount Healthy, in the county of Hamilton, State of Ohio, have invented certain new and useful Improvements in Olamp-Files,of which the fo1- lowing is a specification, reference being had to the accompanying drawings, in which- Figure 1 is a perspective View of my improved file as viewed from the rear end thereof. Fig. 2 is a top view of the clamp-board broken away and the spring-support connected thereto, the clamp being removed. Fig. 3 is a side view of my improved file in an operative position.

The object of my invention is to provide a temporary file which shall be cheap of manufacture and at the same time simple and effective in operation. The file may also be advantageously used for retaining a loose package of paper in position while being written 011 in tablet form.

My improved file is preferably constructed as follows: The clamp properAis so stamped or otherwise formed as to provide the side extensions or lugs a a and a central rearwardlyinclined bearing-lug a, all integral with the body of the clamp. The rearwardly-inclined lug a is preferably provided with two grooves a o in which the ends of the spring-support rest when in an operative position. The clamp-shaft B is suitably connected to the side lugs a a of the clamp proper.

The operating spring support is formed from one continuous piece of spring-wire in such a manner as to form the base D, coiled bearings 61 d, and extensions (1 d, as shown, the end portions of the base being connected to the clamp-board E in any suitable manner.

The clamp-shaft B is passed through the coiled bearings 61 d of the spring-support and the ends of said shaft are then riveted or otherwise suitably securedto the lugs a a. The end portions of the extensions d d of this sprin -support bear against the under face of Serial No. 314,615. (No model.)

the central rearward projection a in the grooves a aiwhieh has the tendency, through the resiliency of the spring, to continually force the front portion of the clamp A down 011 the clamp-board and securely retain any papers that may be inserted between said clamp and board.

To release or replace any paper in the file, all that is required is to put pressure on the extension a of the clamp, which will release the front portion of the clamp from off the paper or board.

The advantages of my improved file are apparent. By reason of the afore-described construction the cost of manufacture is lessened, in that no box, receptacle, or housing is required for the spring. The construction of the spring-support is such that it acts as a support and bearing for the clamp-shaft.

\Vhat I claim as new, and desire to secure by Letters Patent, is

1. In combination with the clamp-board and clamp, the latter having the side lugs and central rearward projection integral therewith, the spring-support' connected to said clampboard and so bent as to form a base-support and journal-bearings for the clamp-shaft, the latter passing through the coiled portions of said spring, the ends of said spring bearing against the under face of the extension of the clamp, substantially as set forth.

2. A file consisting of a clamp-board E, clamp A, the latter having the side lugs to a, and rearward projection (1, having the grooves a a therein, in combination with the spring-support consisting of a base D, coiled bearings d d, and projections d d, the clamp-shaft 13 passing through the coiled portions (1 d, the ends of said shaft being connected to the side lugs a a of the clamp, substantially as described.

ALEXANDER DOM.

WVitnesses:

Jnssn R. LAW, ED. STREHLI.

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