US1802447A

US1802447A - Eraser attachment for lead pencils

Info

Publication number: US1802447A
Application number: US244680A
Authority: US
Inventors: Charles W Smith
Original assignee: Individual
Current assignee: Individual
Priority date: 1928-01-05
Filing date: 1928-01-05
Publication date: 1931-04-28
Anticipated expiration: 1948-04-28

Description

April 28, 1931 c w, SMlTH 1,802,447

ERASER ATTACHMENT FOR LEAD PENCILS Filed Jan. 5, 1928 Inventor 6. WWW/7% Byflzwaai ih Attornqy through the attachment embodying my in-- Patented Apr. 28, 1931 UNITED STATES CHARLES W. SMITH, 0F GREEN ISLAND, NEW YORK ERASER ATTACHMENT FOR LEAD PENCILS Application filed January 5, 1928. Serial No. 244,680.

The present invention relates to improvements 1n eraser tips for lead pencils and has for its principal object to provide a device .0 character wherein the outer endof the eraser tip can be readily and easily exposed for use whenever necessary.

A still further object is to provide an eraser attachment for lead pencils that is simple in construction, inexpensive, strong and durable and further well adapted to the purpose for which it is designed. 7

Other objects and advantages of the invention will become apparent from the following description when taken in connection with the accompanying drawing.

In the accompanying drawing wherein like reference characters indicate like parts throughout the several views:

Figure 1 is a longitudinal sectional view vention showing the outer end of the eraser tip exposed, and

Figure 2 1s a side elevation of my attachment showing the tip of the eraser exposed.

In the drawing wherein for the purpose of illustration is shown the preferred embodiment of my invention, the numeral 1 designates an internally and externally threaded barrel that is secured onthe upper end of a lead pencil A in any appropriate manner in a fixed position. The eraser indicated at 2 may consist of a stick of rubber or 'its equivalent. This eraser is secured at its lower end in the upper end of the barrel 1 that projects beyond the upper end of the lead pencil and the lower end of the eraser stick preferably engages the top of the-lead, pencil in the manner as clearly illustrated in Figure 1.

Cooperating with the externally threaded barrel 1 is the threaded sleeve 4, the same being of a greater length than the barrel and being further formed at its upper end with a reduced unthreaded neck portion 5 that slidably engages the rubber 2 in the manner as clearly illustrated in Figure 1.

By turning the sleeve 4 in one direction, said sleeve will move upwardly on the barrel to cause the upper portion of the neck 5 to extend slightly beyond the upper end or tip of the eraser 2 as indicated by the dotted lines in Figure 1 thereby concealing the top of the eraser and preventing the same from becoming unduly soiled. This will prolong the use of the eraser.

When it becomes necessary to use the eraser, the sleeve 4: is rotated in the reverse direction to cause the same to move downwardly on the barrel 1 and at the same time causing the reduced neck portion 5 to slide downwardly along the rubber stick 2 so that the tip of the eraser will be exposed.

, When the sleeve 4 has moved downwardly to its'lowermost position, and the upper edge of the reduced neck portion does not uncover the worn down eraser tip, the sleeve may bethen rotated in the reverse direction whereby the same will be entirely removed from the barrel. This will permit the further use of the eraser untilthe tip of the eraser reaches a point below the upper ed e of the barrel that is secured on the end of the pencil.

It will thus be seen from the foregoing description, that I have provided an eraser attachment' for lead pencils that is simple in construction and can therefore be manufactured at a very low cost.

While I have shown the preferred embodiment of my invention, it is to be understood that various changes in the size, shape and arrangement of parts may be resorted to without departing from the spirit of the invention and the scope of the appended claim.

Having thus described the invention, what I claim as new is In an eraser attachment for lead pencils, a threaded barrel threaded at its lower end on the upper end of a lead pencil and having its upper end portion projecting therefrom, the upper end of the barrel being open, an' eraser having its lower end threaded in the upper open end of the barrel for engagement with the upper end of the lead pencil,

the barrel being tightly'engaged around the eraser throughout the length of the projection portion of said barrel, a sleeve threaded on the barrel and adapted for longitudinal 5 movement thereon, said sleeve being spaced from the eraser, andra reduced unthreaded neck formed on the upper end of the sleeve and slidably engaging the eraser, said neck being adapted to extend beyond the tip of the eraser, to conceal the same-When the sleeve is moved upwardly, the tip of the eraser being exposed When the sleeve is moved donWWardly and the upper edge of the neck is disposed below the tip of the eraser, said sleeve adapted to be removed from the barrel and said barrel adapted to rigidly support the eraser When the sleeve is removed. In testimony whereofI afl'ix my signature.

CHARLES W. SMITH,