US790596A - Fountain-pen. - Google Patents

Description

Np. 790,596. yPATENTED MAY 23, 1305.v F. E. SHAW. Y FOUNTAIN PEN. APPLICATION FILED JAN. 6, 1905.

` moms/frs UNITED STATES Patented May 23, 1905.

PATENT OFFICE.

FOUNTAIN-PEN.

,SPECIFICATION forming part ofl Letters Patent No. 790,596, dated May 23, 1905. y l Application filed January 5, 1905. Serial No. 239,743.

drawings, forming a part of thisspeciiication,

in which similar characters of' reference indicate corresponding parts in all the views.

Figure 1 is a central longitudinal section .through a fountain-pen embodying' one form of my invention. Fig. 2 is a similar View, broken and on a larger scale, showing the rod arranged 1n the plston for inward move,-

ment. Figs. 3 and 4 are transverse sections f on the lines 3 3 of Fig. 2, the piston-rod being shown in two positions; and Fig. 5 is a similar View on the line 5 5 of Fig. l.

A designates a fountain-pen of' any convenient type, it being shown as having a reservoir or main portion 10, carrying a pen 11 and a protecting-cap 12. In the reservoir operates a piston B, which is shown as comprising a head 13, carrying an elastic body 14C, which may be of rubber. Interposed between the head and the body is a flexible member or disk 15, conveniently of leather, and having a loose edge overlapping the body and filling an annular space between it andv the inner wall of the reservoir.

The pressure of the elastic body against the independentlymovable disk insures a fit which will maintain suction. Through the piston is an opening 16 to receive a piston-rod 17, which has at itsinner end a head or projection 18, provided with an extended surface contacting With the inner end ofl the piston about the opening and preventing the passage of' air or liquid when these elements are in coaction. The piston-rod projects through an opening 2O in the end of' the reservoir opposite the pen and outside said vreservoir has a head or nger-piece 21, by which it may be moved. Adjacent to the head, carried either by it or by the rod, is shown an enlargement 22, which may be tapered to lit a siinilarly-inclined wallof' the opening 20, preventingleakage at this point when the enlargement is pressed into the opening. From the pistonrod is a lateral projection 23, which preferably extends longitudinally thereof from a point removed from the head 18 a distance somewhat greater than the length of the piston into close proximity to the finger-piece.

`This projection has flattened sides, it being in the present instance V-shaped, and the opening 16 through the piston has substantially the same cross-sectional contour, so that when the piston is in engagement with the projection it will be prevented from rotating thereon and will also be held from becoming jammed. When the piston is about the portion of the rod between the projections 18 and 23, this being preferably cylindrical, said rod is capable ofI rotation therein, and it may be limited in its' rotary movement by the contact of' the inner end of the projection 23 with a member or iiange 24, extending outwardly from the piston-head. This member partly surrounds the rod and limits its 'movement to some such angle as ninety degrees One arm of' this contact member is closely adjacent to the piston-opening, so that when the projection of the piston-rod is turned into coaction with it the rod may be moved longitudinally through the pistonopening, while when turned inthe opposite direction it will be locked against such movement.

When it is desired to fill the pen, the piston being in its inward position, the pen end .of the reservoir is immersed in the ink and exhausted and it is to be again filled, the piston is returned to its active position by drawing out the piston-rod until the inner extremity of the projection is outside the head.

Then said projection is turned into ooaetion With the contact member at the side opposite the opening, when the piston will be held against longitudinal movement on the rod and may be forced inwardly. The filling operation may now be repeated, as has been previously described.

Having thus described my invention, I claim as new and desire to secure by Letters Patentm 1. In a fountain-pen, the combination with a reservoir, of a piston operating therein and being provided with an opening, a rod movable through the piston-opening, and a projection from the rod at the outer side of the piston, the'piston-opening being of sucient size to permit the passage of the projection.

2. In` a fountain-pen, the combination with a reservoir, of a piston operating therein and being provided With an opening, a rod movable through the piston-opening, and a projection from the rod at the outer side of the piston and extending to a point adjacent to the outer extremity of the rod, the pistonopening being of suficient size to permit the passage of the projection.

3. In a fountain-pen, the combination with a reservoir, of a piston operating therein, a cylindrical rod movable through the piston, and a flattened projection from the rod which may lie at the outer side of the piston and may move through said piston.

4. In a fountain-pen. the combination with a reservoir, of a piston operating therein and being provided with an opening, a cylindrical rod movable through the pistou-opening, and a iattened projection from the rod at the outer side of the piston, the piston-opening having the same sectional contour as has the rod in a transverse plane through the projection and permitting the passage of said projection.

5. In a fountain-pen, the combination with a reservoir, of a piston operating therein, a

Y rod movable through and rotatable in the piston, a projection from the rod at the outer side of the piston, and a contact member carried by the piston and with which the projection may coact to limit its rotary movement.

6. In a fountain-pen, the combination with a reservoir, of a piston operating therein and being provided with an opening, a rod movable through and rotatable in the piston-opening, a projection from the rod at the outer side of the piston, and a contact member situated in close proximity to one side of the opening and with which the projection may coact.

In testimony whereof I have signed my n ame to this specilication in the presence of two su bscribing witnesses.

FRANCIS EMERSON SHAW.

Witnesses:

J. K. SMITH, IRVIN CHASE.

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