US1822167A

US1822167A - Fountain pen cap

Info

Publication number: US1822167A
Application number: US459169A
Authority: US
Inventors: Lucifer J Most
Original assignee: Mabie Todd & Co
Current assignee: Mabie Todd & Co
Priority date: 1930-06-04
Filing date: 1930-06-04
Publication date: 1931-09-08
Anticipated expiration: 1948-09-08

Description

Sept. 8, 1931. L. J. M'os'r FOUNTAIN PEN CAP Filed nine 4, 1930 Patented Sept. 8, 1931 UNITED'STATES PATENT OFFICE A LUCIFER J. MOST, or KELARNY, NEW JERSEY, AssIGNOR To ivrABrn TODD & co., or NEW YORK COUNTY, NEW YORK FOUNTAIN PEN 'CAP Application filed June 4, 1930. Serial No. 459,169.

My invention relates to fountainA pen caps used with combinations ofmechanical pencils and fountain pens, and is a modification of the structure disclosed in my application,

4I5 Serial No. 428,590, iiled February 15, 1930.

The object of the invention is to incorporate in the pen cap, the lead magazine and the eraser, so as to permit the use of a unitary barrel accommodating both the pen and l pencil mechanisms.

Another object of the invention is to provide a pen cap having a nib cap Within the pen cap, spaced therefrom and forming therewith an annular lead space accessible from 21' the normally closed end of the pen cap.

In the appended drawings forming part of this application, Figure 1 is a vertical section through a cap on line1-1 Figure 2, showing an embodiment of my invention, a

portion of the pen and nib being shown in dash and' dot line.

Figure 2 is an enlarged top plan of the cap with the tip cap and rubber removed.

Figure 3 is an enlarged cross-section on V2:5 line 3 3, Figure 1, and

Figure 4 is a top plan on the open end of the cap.

In the drawings, 10 is a tube of material suitable for a pen cap, one end of whichtube has a threaded recess for a threaded nipple 11. A port-ion of the nipple projects above the end of the tube to receive a tip cap 12 which closes this end of the tube and therewith forms the upper end of the pen cap. 'i The nipple 11 has a bottom 13, in which annular slots 14 are punched out just inside of its inner wall. The bottom 13 has also a central aperture 15.

A trunnion 18 of a plug 17 engages the 9. aperture 15, the diameter of the plug being such that the annular slots 14 remain unobstructed thereby. rI`he plug 17 seals the upper end of a sleeve 16 so as to protectthe edge of the tube. The lower end of the sleeve 5. 16 is engaged by a'ring 19 recessed to form an abutment for the end of the tube, said ring i 19 being threaded into the tube 10, and whereby itmay be screwed tight within said tube against the bottom 13 of the nipple 11. The trunnion 18 and the ring 19 centering the sleeve -16 within the tube-10, provide between said sleeve and tube an annular space 20 4Whichis the magazine for frlead, accessib le `4from the circular slots 14 in the bottom 13 of-the nipple 11.V p i vTo provide suif'lcient annular space 20 `for the leads without increasing the size of the tube 10, Yforming the cap of thepen, While providing a suiiiciently largeV nib cap by meansA of the sleeve 16,it becomes necessary y to make said sleeve 16 out of metal. To prevent the inner surface of the metalpsurface from ink corrosion, it is veither coated or plated. I prefer to gold plate, buta composition o-f rubber maybe deposited on the surface of the sleeve exposed to ink corrosion. The ring 19 and the plug 17 are made of hard rubber, which are by their nature immune to corrosion by ink. y

The circular slots 14 are normally fclosed by a removable eraser 21, yieldpingly positioned in the nipple 11 and normally housed in the tip cap 12.

I claim: Y

1. A `fountain pen cap comprising a tube, a nipple in one end thereof, a tip cap Aremovably connected to the nipple, a sleeve within the tube of a diameter to provide an annular lead space Vbetween the tube and sleeve, a plug closing one end of the sleeve, said nipple having a bottom with annular slots there,- in and a central aperture, said plug having a trunnion for engaging the central aperture to center the sleeve within the tube and register the annular slots in the bottom of the nipple with the annular space formed by the sleeve and tube, and a ring fitted from the open end of the tube, engaging the end of the sleeve for centering said end of the sleeve in the tube and for locking the sleeve and plug against the bottom of the nipple.

2. A fountain pen cap comprising a tube, a nipple in one end of the tube, a tip cap enraging the nipple and closing the tube, a sleeve within the tube of a diameter to provide an annular lead space between the tube and sleeve. a plug closing,- one end of the sleeve, said nipple having a bottom with a central aperture therein, said plug having a trunnion for engaging the aperture of the bottom to center the end of the sleeve in the tube, said bottom having means Igiving access to the annular space formed by the sleeve and tube, and a ring threaded through the open end of the tube and engaging the other end of the sleeve for locking said sleeve and plug against the bottom of the nipple.

3. A fountain pen cap comprising,r a tube,

4a, nipple in one end of the tube, a tin cap for the nipple closing' the end of the tube, a pen nib cap in said tube forming therewith an annular lead space` and a ring at the open end ofl the nib cap engaging the tube and closing the annular space between the nib cap andthe tube, said nipple h avinLT a bottom with a central aperture therein, and annular slots tbroufrh which access mav be had to the annular lead space formed b'v the nib cap and tube. said nib cap having a central trunnion for engaging the central aperture of the nipple bottom.

4. A fountain pen cap comprising' a tube` a nipple in one end of said tube. a tip cap for said nipple. a metallic sleeve within the tube` of a diameter to provide annular lead space between the tube and sleeve. a hard rubber nl uqf engaging one end of the sleeve. said nipple and plug' having centering means for nronerlv spa eine the end of tbe sleeve at the plus in the tube.- said nipple having means rfivinsr access to the annular space formed b v the sleeve and tube. anda ring* of hard rubber threaded into tbe tube and enga Qing the other end of the sleeve` said ring locking said sleeve with tbe uluor aoainst tbe nippleV within the tuber said metallic sleeve having' its inner peripberv coated to render it immune to ink corrosion.

5. A fountain pen can comprisingr a tube, a nipple in one end of the tube` a tin cap for said nipple closing the end of the tube, a metallic sleeve within the tube of a diameter to provide an annular load snace between the tube and sleeve* a hard rubber plug engagingl one end of the sleeve and protecting the edge thereof, said plug and nipple having centering: means for properly spacing the sleeve within the tube, and a hard rubber ring` threaded through the open end of the tube and engaging the sleeve to protect its edge andy locking said sleeve and plug against the nipple within the tube, said nipple having means giving access to the annular space formed by the sleeve and tube, said sleeve being plated to protect it from ink Corrosion.

6. A fountain pen cap comprising a tube, a tip cap at upper end of said tube, a sleeve within the tube, of a diameter to provide lead space between the tube and sleeve, and means for locking said sleeve at the ends thereof in the tube, the locking means at the upper end of the tube being adapted to provide access to the lead space from the upper end of the tube, said sleeve being protected from corrosion caused by ink.

LUCIFER J. MOST.