US1577548A - Fountain pen - Google Patents

Description

Patented Mar. 23, 1926.

' UNITED STATES PATENT OFFICE.

'HENRY J'. UPTON', 0F MEDFOBD, MASSACHUSETTS, ASSIG-NOR TO THE MOORE PEN CO., OF CBOSTON, MASSACHUSETTS, CORPORATION F MASSACHUSETTS.

FOUNTAIN PEN.

application mea January 12, 1925. seran No. 1,720.

To all whom it may concern:

.Be it known that I, HENRY J. UP'roN, a citizen of the United States, residing at Medford, in the county of Middlesex and State of Massachusetts, have invented certain new and usefulImprovements in Fountain Pens, of which the following is a speciication.

My invention is a new cap for fountain l0- pens and the like, designed to permit the application of distinctive devices to the outer surface of the cap in a simple, efficient and economical manner, without sacrifice of the qualities of the cap as a pen closure and without in any manner weaken- `ing 1t. v

In the drawings: Figure 1 is an elevation of a cap embodyin myi'nventiomshowing rings applied;

Figure l2' is a longitudinal section of the cap of Figure 1;

Figure 3 is an elevation similar toFigure 1, but 'showing along seat and rings spaced by the use of a long ferrule;

Figure 4 is a longitudinal section of the cap of Figure 3;

Figure 5--is similar to Figure 4, the applied rings however being omitted;

Figure 6 is a cross-section on line 6--6 of Fi e 1' igure7 is a view of the locking member; Figure 8 is a cross-section on line 8--8 of Fi re 3;

igure 9 Iis a perspective view of a rin Figure 10 is a longitudinal section of t e upper part of a cap, showing a modlcation; v igure 10a is an enlarged detail of Fig- 11.1'0 10 l I Rings of various materials, as metal, hard rubber, Celluloid and the like, have heretofore been applied to the outer surfaces of fountain pen caps, for purposes of distinction, and the application has been a relatively slow and expensive process, the rmgs bein' sprung into positlon in shallow prepare grooves in the outer .surface of the cap or pen. In accomplishlng this, much waste of material by breakagetook place and the process was in itself slow and was also expensive, requiring skilled labor.

, It is an ob]ect of my invention to make 1t possible to apply such rings to the outer surface with a minimum of expense, trouble and breakage and. in any desired position,

and to be able to employ in the work unskilled labor.

In accordance with my invention the cap is formed of two inner diameters, the larger diameter being at the open end of the cap, the cap being thus, within, made in two chambers, separated by a shoulder, which is adapted to contact with the end of the fountain when the ca is placed upon the pen -end of the fountaln pen, to close the same.'

It will be obvious that the small, inner cap chamber is adapted to receive the gold pen point and it will be obvious also that the walls of the cap at this part of its length are of much greater 'thickness than they are at other parts of the cap.

Upon the outer surface of the cap at the closed end thereof I reduce the outside diameter of the cap to form a cylindrical seat, for rings ofA material to `be applied to the outer surface of the cap, the wall being reinforced at this part of the cap .by the inner chamber wall so that the operation does not unduly yweaken the ca or interfere in any manner with the per ormance of its function as a pen closure. .The cap, as so pre- 'ared and shaped is shown in Figure 5,.A,

eing the cap generally, a, the seat portion and b the wall of the small chamber. .The open outer end of the small chamber of the cap is screw threaded and: cooperating with this threaded opening is a mushroom clamping member, made @up of a head D and a threaded tang d. The head is preferably of a diameter substantially equal tothe outside diameter' of the cap before the 'formation of the seat, a, but it may obviousl greater diameter and of an ornate brm, if desired. The rings E o r ferrule F, to be applied, are of an inner diameter equal to theouterdiameter of the seat, a, and are preferably of a thickness equal to the depth of the seat or they maybe of any desired thickness. The Width or length of the ring or rings or ferrule is such that when assembled upon the seat the seat will be filled. 'Ihe clamping member is now screwed to place, the under side of the headengaging the adjacent applied ring and clamping the rings and ferrules upon the seat, against movement on the seat. The seat may be made of relatively great depth enabling the employment of rings of' relatively great thickness, an advantage in manufacture and be of element of application eliminating in large part the breakage and waste.

vIt will now be clear that the outer surface of a cap may have applied to it sections of different material, metal, hard rubber, celluloid or the'lke and of different colors, for

` purposes of ornament or distinction, at a assembly may be effected by unskilled labor p minimum of cost and with a maximum of stability, they resultant cap-appearing visually -to be of unitary construction. This as it calls for no more than the placing upon the seat of the designed rings or ferrules7 in g the designed order.

It will be obvious that any desired combination and spacing of rings and errules, within the length capacity of the Seat may be obtained, or a single tube or ferrule of a desired `materia-l and color may be applied to cover the entire seat. y,

In Figure 10, I show an alternative construction, especially useful when it isi desired to adapt tubular material not ispecially designed for use in the making o l my new cap.- In this constructionthe inner surface of the outer shell or tube of the cap, be-

f fore the. formation-of the seat,a, is screw kinterior screw threads of member bx.

Lammey I claim:

1. The pen cap above described,made up of a tube having walls of two diameters within separated -by a -shoulder abutment and two diameters without separated by a shoulder abutment the smaller diameters of the tube within. and without being at the same end of the tube and the smaller inner diameter being screw threaded at its outerend; a ring or rings fitting upon the smaller exterior surface ofthe tube; a clamping plug, made up of a head of greater diameter than the small outer diameter of the tube and having a screw threaded tang to cooperate with the threaded open end of the smaller interior diameter of the tube, to close one end of the cap and clamp the iitted rings upon the outer surface of the tube, between the clamping head and the shoulder abutment.

2. The pen cap above described, made up of a cap tube having two diameters upon its outer surface separated by a shoulder abutment the smaller diameter at the rear end of the cap, beingscrew threaded within at the opening; a ring or rings tting upon the smaller exterior surface of the tube; a clamping plug, made up of a head of greater diameter than the small outer diameter of the vtube and having a screw threaded tang to cooperate with the threaded open end of the interior diameter of the tube, to close one end of the cap and clamp the fitted rings upon the outer surface of the tube between the clamping head and the shoulder abutment.

Signed at Boston, Massachusetts, this ninth day of January 1925. f

` p HENRY J. UPTON.

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