US2239526A - Reversible eraser tip - Google Patents

Description

April 22, 1941.

D. JUELSS REVERS IBLE ERASER TIP Filed Nov. 19, 1940 INVENTOR Edv/V j-MQ/rf BY @4 @Mffw ATTORN EYS patented` Apr. 22, 17941Y can Lead Pencil Company, Hoboken, N. J., a corporation of New York Application November 19, 1940, Serial No. '366,265

's claims. (el. 12o-38) This invention relates to erasers for pencils and particularly to a tip embodying a reversible eraser which may be disposed readily for effective use or concealed in a tubular holder orferrule at the end of the pencil to afford a pleasing apmade of any suitable material which affords pearanceto the pencil. While the invention is sucient frictional engagement through resilidesigned particularly for use with so-called meence or otherwise to hold the eraser cap securely chanical pencils, it maybe applied also to crdiin either of its adjusted positions. Conveniently, nary pencils employing a lead enclosed within a any suitable metal may be employed, but other sheath of wood or other material. materials and particularly plastic materials In the case of mechanical pencils particularly,` which are commonly molded Ato form various `obnumerous attempts have been made to afford an jects arelikewise suitable for the purpose. eraser which can be concealed when not in use. Referring to the drawing, 5 indicates a body of Erasers are likely to become soiled and worn a pencil which may be of the ordinary wood in use and detract from the appearance of the l5 sheath type, although as indicated the device pencil if left in operative position. Caps adapted is designed particularly for use with mechanical to cover the eraser are sometimes used, but these pencils. The mechanism of the latter type of are likely to become lost and are otherwise unpencil forms no part of the present invention, satisfactory. Some pencils are provided with and is not illustrated. caps enclosing an eraser which may be reversed 2o The tubular holder or Vferrule 6 is secured prefwhen the cap is removed, but the operation of erably upon a shoulder 'I at the end of the penremoving and reversing the eraser is tedious, cil by friction, an adhesive, or otherwise. As and the device does not therefore fulfil the reis usual in pencil construction, an indentation 8 quirement of a simple and easily manipulatable maybe employed to securely hold the ferrule eraser tip. All of the devices heretofore proposed 2.5. upon the end of the pencil. The particular form afford some disadvantage. of the ferrule is unimportant, but it should `be It is the object of the present invention to prodesigned to have a decorative appearance and vide a simple and effective reversible eraser which may, for example, be provided with projecting may be withdrawn instantaneously and reinrings 9. The upper part of the ferrule may be serted in the desired position, either to expose 3o of the same dimension as the lower, but preferthe eraser or to afford finished appearance to ably it is somewhat enlarged, as indicated in the the pencil with the eraser concealed and prodrawing, to afford more space, thereby permittected. ting the use of an enlarged eraser. The ferrule Other objects and advantages of the invention is provided with two longitudinally disposed slots will be apparent as it is better understood by I0 and is preferably stiffened by means of a cirreference to the following specification and the cular recess I I, thus affording better frictional accompanying drawing, in which engagement and more security in holding the Fig. 1 is a view in perspective of the tip with eraser cap. the eraser cap withdrawn; The eraser I2, preferably of a suitable rubber Fig. 2 is a vertical elevation of the tip with the 40 composition, is secured in a holder I3 of metal eraser cap disposed therein so as to expose the or other suitable material, preferably by means eraser; of a lug I 4 which is struck from the surface of the Fig. 3 is a plan View of the top of the device holder. The holder is in turn disposed within as shown in Fig. 2; a metal cap I5, into which it fits tightly, and is Fig. 4 is an elevation partially in section on the '45 held by frictional Contact. Thus, when the line 4-4 of Fi-g. 2; and eraser becomes worn, it may be withdrawn from Fig. 5 is a similar View on the line 5 5 of the cap and replaced. The cap is preferably del Fig. 4. signed to afford a decorative appearance, and In carrying out the invention, I provide a tip need not be discarded when a new eraser is recomprising a tubular holder or ferrule adapted quired. to be applied in any suitable manner to the end The cap I5 is provided with two projecting ears of a mechanical or other type of pencil and a I6 on opposite sides, the ears being provided reversible cap holding the eraser and provided preferably with serrations `Il adapted to afford with projecting ears which engage limiting slots `a better grip. When the cap I5 is pushed into in the body of the ferrule. These ears afford a the ferrule in either position, that is with the means for quickly grasping and withdrawing `the eraser cap from the tip, so that it may be reinserted with the eraser exposed or concealed as may be desired. The ferrule and cap may be eraser reversed as indicated in Fig. 1 or exposed as indicated Fig. 2, the ears I6 engage the slots I0, and/'the latter limit the movement of the cap I5 wlch isheld frictionally in the ferrule. Normally when the pencil is not in use, the eraser will be reversed and concealed within the ferrule, as indicated in Figs. 4 and 5. When the eraser is to be used, the ears I6 may be gripped with the fingers land Withdrawn, whereupon the cap may be reinserted readily in the position indicated in Fig. 2, so that the eraser is available for use.

As will be apparent from the foregoing description and from the drawing, the ferrule and cap when arranged to enclose the eraser afford a decorative appearance to the pencil. The worn or soiled eraser is enclosed. However, by a simple manipulation, the eraser may be exposed for use. No difcult manipulation is involved, and no separate parts are withdrawn and possibly mislaid in the operation. The device allords, therefore, a satisfactory as well as an inexpensive eraser tip for pencils.

While the invention is designed particularly as a tip to be permanently fastened to a pencil,

it is equally useful when applied to a separable or slip-on tip which is secured to the pencil by friction or otherwise. Such a tip may be made in various forms embodying the subject matter of the inventio-n.

Various changes may be made in the structure and arrangement of the parts without departing from the invention or sacrificing any of the advantages thereof.

I claim:

`L A reversible eraser device for pencils comprising a ferrule of inherently resilient material having a free `slotted end, said free end of the ferrule having an inwardly depressed groove intermediate the ends of the slots, a cap for holding an eraser receivable in the free end of the ferrule, the cross-sectional shape of the cap generally conforming to the cross-sectional shape of the free end of the ferrule, ears formed on the cap adapted to be received in said slots, the relative sizes of the cap-and the free end of the ferrule being such that when the cap is inserted in the free end of the ferrule the slotted end thereof is expanded and the cap is frictionally retained therein by the gripping action of the inner face of the depressed groove against the cap.

2. A reversible eraser device for pencils comprising a ferrule of inherently resilient material having a free slotted end, said free end of the ferrule having an inwardly depressed groove intermediate the ends of the slots, a cap for holding an eraser receivable in the free end of the ferrule, the cross-sectional shape of the cap generally conforming to the cross-sectional shape of the free end of the ferrule, said cap having serrated ears pressed outwardly from the body thereof, said ears being adapted to be received in said slots and of such size that when the cap is inserted in the ferrule the serrated portions will extend outwardly beyond the slots, the inner ends of the slots affording stops engageable by the outwardly extending ears to limit the inward movement of the cap, the relative sizes of the cap and the free end ofl the ferrule being such that when the cap is inserted in the free end of the ferrule the slotted end thereof is expanded and the cap is frictionally retained therein by the gripping action of the inner face of the depressed groove against the cap.

3. A reversible eraser device for pencils comprising a ferrule of inherently resilient material having a free slotted end, said free end of the ferrule having an inwardly depressed stiffening groove extending entirely therearound between the slots intermediate their ends, an eraserholding cap having a continuous periphery receivable in the free end of the ferrule, the crosssectional shape of the cap generally conforming to the cross-sectional shape of the free end of the ferrule, ears formed on the cap adapted to be received in said slots, the relative sizes of the cap and the free end of the ferrule being such that when the cap is inserted in the free end of the ferrule the slotted end thereof is expanded and the cap is frictionally retained therein by the gripping action of the inner face of the depressed groove against the cap.

DAVID JUELSS.

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