US769946A - Eraser. - Google Patents

Description

No. 769,946. PATENTED SEPT. 13, 1904.

11. 0. KBFERSTEIN.

ERASER.

APPLICATION FILED JUNE 22.1904.

N0 MODEL.

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PVIYNESLSES: [NVENTOR UNITED STATES Patented September 13, 1904.

HANS O. KEFERSTEIN, OF BARBERTON, OHIO.

ERASER.

SPECIFICATION forming part of Letters Patent No. 769,946, dated September 13, 1904. Application filed June 22, 1904. Serial No. 213,654. (No model.)

To a whom it may concern:

Be it known that I, HANS O. KErERsrEIN, residing at Barberton, in the county of Summit and State of Ohio, have invented certain new and useful Improvements in Erasers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to erasers of the kind commonly provided on the ends of writingpencils; and it consists in the novel construction and combination of the parts hereinafter fully described and claimed.

In the drawings, Figure 1 is a side view of a pencil, partly in section, and having an eraser according to this invention. Fig. 2 is a similar view, but shows the eraser detached and ready to be inclosed Within the pencil. Fig. 3 is a plan View of the eraser.

A is a handle, which is preferably a writingpencil of any approved make; but it may be any equivalent handle, such as a penholder or merely a rod or stick.

B is a stationary tubular socket, which is secured to the end portion of the handle. This stationary socket is cylindrical, and it is forced part way onto the handle and is secured to it in any approved way.

O is a slidable socket, which is tubular and slidable in the stationary socket B. The slidable socket C is provided with a hollow bead or projection cl, which extends around it, and it has also a tapering end portion 0.

G is a plug, of .india-rubber or other similar elastic erasing material. This plug is provided at one end with an enlargement g, and when the plug is forced into the tapering portion a its enlargement g engages with the bead (i, so that the plug is securely connected to the. slidable socket. The other end portion of the slidable socket, which is slid into engagement with the stationary socket, is also taperedslightly, so as to enable it to enter the stationary socket easily.

When the eraser is not required in use, it is inserted in the stationary socket, as shown in Fig. 2, and in this manner the erasing material is kept clean and uninjured.

When the eraser is to be used, its position is reversed, and it is-then used in the ordinary Way, the pencil forming a convenient handle for manipulating it. The erasing-plug can be renewed as it becomes worn down by inserting a new one.

WVhat I claim is 1. The combination, with a handle, and a tubular socket secured thereto; of a tubular reversible socket provided with a hollow projecting bead at its middle part which forms a stop which bears against the end of the aforesaid socket in which the end. portions of the said reversible socket are slidable, and a plug of erasing material provided with an annular enlargement which is sprung into the hollow interior of the said bead.

2. The combination, with a handle, and a stationary tubular socket secured thereto; of a reversible socket provided with a concavoconvex bead which projects externally, the end portions of the said reversible socket being slidable in the said stationary socket, and a plug of erasing material provided at one end With an enlargement which is sprung into the concave recess of the said bead.

In testimony whereof I affix my signature in presence of two witnesses.

HANS O. KEFERSTEIN.

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