US2045431A - Pencil attached eraser holder - Google Patents

Description

June J WQESSNER 2,045,431

PENCIL ATTACHED ERASER HOLDER Filed Nov. 20, 1955 Patented June 23, 1936 UNITED STATES PENCIL ATTACHED ERASER HOLDER John J. Woessner,

Eberhard Faber I enc New York Application November 2 1 Claim.

This invention relates particularly to an eraser holder to be separably attached to or mounted on the end of a pencil or the like, for example as a tip for a. pencil or as a protector for the point of a pencil. More specifically, the invention contemplates an eraser holder of the general character described comprising a tubular body to separably frictionally telescope over the end of a pencil or the like and having means for supporting a disk of erasive material in convenient position for use.

One object of the invention is to provide such an eraser holder which shall include a split resilient tubular body formed of a single pieceof sheet material and embodying novel and improved features of construction for mounting a disk of erasive material thereon, whereby the holder shall be inexpensive, and diametrical expansion and contraction of the tubular body shall be per mitted but limited to control the frictional en: gagement of the tubular body with a pencil or the like, and the erasive disk shall be tightly frictionally clamped. to prevent movement during the making of erasures but shall be capable of being manually moved in the holder to bring different portions into operative position as used portions become worn.

Other objects are to provide such an eraser holder wherein said split tubular body shall have integral resiliently flexible portions at one end for supporting the erasive disk and so formed and so related to the slit in' the split tubular body that the body may be freely diametrically contracted to permit tight clamping'of the erasive disk and the resiliency of said flexible portions shall permit but limit diametrical expansion of the tubular body as it is telescoped over the end of a pencil or the like, whereby proper frictional engagement of the body with the pencil may be ensured; and to obtain other results and advantages as will be brought out by the following description.

Referring to the accompanying drawing in which corresponding and like parts are designated throughout the several views by the same reference characters Figure 1 is a side elevation of a pencil attached eraser holder embodying my invention showing it applied to a pencil.

Figure 2 is a front elevation thereof with portions broken away for clearness of illustration.

Figure 3 is a vertical sectional view taken on the line 3-3 of Figure 2, and

Figures 4 and 5 are horizont a1 sectional views Maspeth, N. Y., assignor to il 00., a corporation of 0, 1935 Serial No. 50,620

taken on the lines 4-4, and 55, respectively, of Figure 2. V

Specifically describing the illustrated embodi- I ment of the invention, the eraser holder includes a split tubular body I which is formed of a single piece of resilient material, preferably resilient sheet metal, the diameter of the body being such that it may frictionally telescopically fit over the end of a pencil or the like 2. In forming the body, the strip of sheet metal is rolled into approximately cylindrical form so as to provide a slit. 3 extending longitudinally of the body from one end to the other. I

Projecting integrally from one end of the tubular body is a pair of cars 4 having portions 5 inclined inwardly from the edge of the body and terminating in portions 6 which are approximately parallel with and spaced equidistantly at opposite sides of a common axial plane of the tubular body I. Also, the ears are preferably equidistant from the edges of the slit 3.

Between the portions 6 of the cars is arranged a disk 1 of erasive material which is preferably circular and is frictionally clamped between the ears by a fastening member 8 which passes through openings 9 in the ears and an opening I!) disposed centrally of the disk. In the present instance the fastener member is shown in the form of a tubular eyelet which has its ends upset over the outsides of the respective ears 4. The eraser disk is clamped between the ears with sufficient frictional engagement to hold the disk against rotation during the making of erasures but to permit manual rotation of the disk to bring different portions thereof into operative position as used portions become worn.

With the construction as described, the eraser holder can be inexpensively produced from a single sheet of metal instead of from a seamless tube as has been the practice heretofore; and the slit in the tube and the resiliently flexible ears permit the tube to diametrically contract so as to allow tight clamping of the ears against the erasive disk, and the tight clamp of the ears and disk by the fastening device and the resiliency of the ears permits, but at the same time limits, diametrical expansion of the tube so as to control frictional engagement of the tube throughout its length with a pencil or the like. Complete collapse of the tube is restrained by the ears abutting the erasive disk, and excessive diametrical expansion of the tube is limited by the connection of the ears to the disk, while the resiliency of the ears enhances or reenforces the inherent resiliency of the split tubular body.

While I have shown and described the invention as embodied in a pencil tip, it should be understood that the configuration of the holder may be modified and changed without departing from the spirit or scope of the invention and the invention may be embodied in a pencil point protector.

Having thus described my invention, what I claim is:

An eraser holder comprising a tube formed of a single piece of resilient material and of a diameter to frictionally telescopically fit over the end of a pencil or the like and having a longitudinal slit from end to end, said tube having a pair of integral resiliently flexible ears projecting longitudinally from one endvthereof in diametrically opposite spaced relation and approximately equidistantly spaced from said slit, circumferentially of the tube, a disk of elastic erasive material between said ears, and a fastening device passing through said ears and disk and clamping the ears in frictional contact with the disk, said slit in the tube and resiliency of said ears permitting the tube to diametrically contract throughout its length and allow tight clamping of the ears against the disk, and the tight clamp of said ears and disk by said fastening device and the resiliency of the ears permitting but limiting diametrical expansion of the tube throughout its length, to control and ensure frictional engagement of the tube throughout its length with a'pencil or the like.

JQHN J. WOESSNER.

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