US2157450A - Fountain pen eraser attachment - Google Patents

Description

y 1939- .1. CIDISSEIN 2,157,450

FOUNTAIN PEN ERASER ATTACHMENT Filed Jan. 25, 1939 ajyj INVENTOR ATTO R N EYS Patented May 9, 1939 PATENT OFFICE FOUNTAIN PEN ERASER ATTACHMEN John Cidissen,

New York, N. Y.

- Application January 25, 1939, Serial No. 252,824

2 Claims.

This invention relates to a fountain pen eraser attachment and has for an object to provide a novel ink eraser which may be readily assembled, and disassembled from the cap of a fountain pen. A further object is to provide a device of this character, which will be formed of a few strong simple and durable parts, which will be inexpensive tomanufacture, and which will not easily get out of order.

With the above and other objects in view the invention consists of certain novel details of construction and combinations of parts hereinafter fully described and claimed, it being understood that various modifications may be resorted to 15 within the scope of the appended claims without departing from the spirit or sacrificing any of the advantages of the invention. In the accompanying drawing forming part of this specification:

Figure 1 is a front elevation of a fountain pen equipped with an eraser attachment constructed in accordance with the invention.

Figure 2 is a longitudinal sectional view through the cap shown in Figure 1 and showing the eraser attachment.

Figure 3 is an end elevation of the eraser. Figure 4 is a longitudinal sectional view of the eraser.

Referring now to the drawing in which like characters of reference designate similar parts in the various views, l0 designates a fountain pen having a cap I I, the outer portion of the cap being reduced and threaded as shown at ii in Figure 2. A. bore I3 is formed in the reduced threaded end of the cap and this bore is also threaded.

The ink eraser I4 is substantially cylindrical in contourand is provided with a rounded end I! which forms a rubbing surface. The cylindrical wall of the eraser at the opposite end thereof. is threaded as shown at It to be screwed into the threaded bore ll of the reduced end of the cap.

-A pair of openings I! are formed longitudinally in the flat end wall l8 of the eraser and are disposed diametrically opposite each other as best shown in Figure 3.

A shell I9 is provided with screw threads to 6 screw onto the exterior screw threads I! of-the reduced end of the cap. The shell houses the eraser when not in use. i

In operation when the eraser has been worn out sufilciently to expose the openings I'I a hair pin 10 or other tool may be inserted in the openings and the worn out eraser unscrewed to be replaced with a new eraser.

From the above description it is thought that the construction and operation of the invention 16 will be fully understood without further explanation.

- What is claimed is:

l. The combination with a fountain pen cap having the outer end portion reduced and i0 threaded internally and externally, of a cylindrical ink eraser externally threaded and received in the internally threaded portion of the reduced end, said eraser being formedwith a pair of diametrically disposed longitudinallyextending aper- 26 tures for the greater portion of its length adapted to receive a tool for unscrewing the eraser for replacement when worn out.

2. The combination with a fountain pen cap having the outer end reduced and threaded both 30 internally and externally, a cylindrical ink eraser screw threadedly engaged at one end in the internally threaded portion of said reduced end, and a shell screw threadedly engaged with said cap for housing the eraser, the eraser being provided with diametrically disposed longitudinally extending openings for the greater portion of its length to permit of the stub end thereof being removed by inserting a hair pin in said openings when the eraser becomes worn down to the level 40 of the reduced threaded portion of the cap.

JOHN CIDISfiEN.

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