US203120A - Improvement in erasive-tablet holders - Google Patents

Description

0J CLEVELAND. Erasife Tab1'et-Holder`- No. 203,120. Patented 'April 30, |878.y

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UNITED STATES PATENT OEEICE.l

ORESTES CLEVELAND, OF JERSEY' CITY, NEW JERSEY.

IMPROVEMENT IN ERASIVE-TABLET HOLDERS.

Specification forming part of Letters Patent No. 203,120, dated April 30, 1878; application led February 8, 1878.

To all whom t may concern:

Be it known that I, OREsTEs CLEVELAND, of Jersey City, Hudson county, State of New Jersey, have invented an Improvement in Erasive-Tablet Holders, of which the following is a specification:

This invention relates to that class of erasive-tablet holders which are adapted to be opened to receive the tablet of rubber or similar material, and in which it may be adjusted as its end wears away, so as to expose an operative portion, which is thus secured in a holder having an area sufficient to afford a grasping surface for the hand of the user. Such devices constitute a rigid holder for the iiexible or elastic erasive substance, and provide a means for the economic use of said material.

This invention consists in a peculiar construction of said holders, in which cheapness of production, readiness of adj ustability, and simplicity of parts are accomplished, all of which will hereinafter more fully appear.

The drawings illustrate, in Figure 1, a perspective view of this improved holder with an erasive tablet adjusted therein; in Fig. 2, a transverse section with the top plate adjusted in place 5 and in Fig. 3, a similar view, showing the mode of adjusting the said top plate in place.

In constructing this device, a blank of sheet metal is bent at right angles, so as to form a bottom, 5, and two sides, 2 4, and the upper edges of these sides 2 4 are bent outward to form lips, as 7. A top plate, 3, is also formed from sheet metal, and has its edges turned inwardly to provide hooked projections 8. Thus constructed, the sides 2 4 will have a slightly outward spring, which may be increased by forming a double bend, as 6, at their point of junction with the bottom 5.

In placing the top plate 3 in position, it is hooked over the projection 7, and the side 2 is pressed inwardly, while the top plate is held in place upon the side 4 until the hooked projection 8 passes over the lip 7, with which it engages, and thus secures the top plate in place, as in Fig. 2.

The body and top plate, thus formed and adj usted together, constitute a holder with closed bottom, top, and sides, and having open ends. When the top plate is removed the cake or tablet, l0, of rubber or similar erasivel material, may be placed within the body of the holder, with its end protruding a suitable distance therefrom, where it will be securely held- `by adjusting the top plate 3 in place, as before described.

In order that this securing of the cake or tablet l0 may be more permanent, it is well to provide the edge of the bottom 5 and top plate 3 with an inward-projecting lip, as 11, which will engage with and be pressed intothe cake or tablet, and ,thus iirmly secure the same from longitudinal displacement. Two pieces, cakes, or tablets may thus be held, one protruding from each end of the holder.

This improved holder is without expensive hinged joints or clamping-screws, and provides in its two parts the means for securing the erasive tablet, and at the same time provides'for its convenient and ready adjustment.

What, therefore, is claimed is- An erasive-tablet holder consisting of a body having spring sides with projections 7, and a top plate having hooked projections 8, all substantially as described. t

In testimony whereof I have signed my name to lthis specification in the presence of two subscribing witnesses.

Y ORESTES CLEVELAND.

Witnesses:

H. T. MUNsoN, GEO. H. GRAHAM.

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