US236158A - Stylographic pen - Google Patents

Description

(NQ Model.)

F- HOLLAND. Stylographiov'Pen.

No. 286,158. Patented Jan. 4, 1881.

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'ArnNr FRANK HOLLAND, OF MANCHESTER, CONNECTICUT.

STYLOGRAPHIC PEN;

Specification forming part. of Letters Patent No. 236,158, dated January 4, 1881.

Application led September 2B, 1880. (No model.)

To all whom t 'may concern Be it known that I, FRANK HOLLAND, of Manchester, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Stylographic Pens; andI do hereby declare that the following is a full, clear, and exact description thereof, whereby a person skilled in the art can make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

Like letters in the gures indicate the same parts. I

Myimprovement relates to stylographicpens which are furnished with a fountain or reservoir to contain a supply of ink intended to be fed gradually to the point as it is consumed in writing.

My improvement has for its object the prevention of the flowing out of the ink, so as to form a drop upon the point, especially when irst commencing to write, as is the case with stylographic pens now in use, and to furnish a means for controlling the discharge when too free, or, when not sufcientlyfree, from becoming partially dried or clogged in the point; also, to provide a means for conveniently tilling the reservoir with ink without other accessory tools directly from a bottle or inkstand.

ln the accompanying drawings, illustrating my invention, Figure 1 shows a longitudinal section through the center of my improved pen. Fig. 2 is a cross-section on the line c a of Fig. 1. Fig. 3 is a cross-section on the line b b of Fig. l.

Ais a-hollow cylinder, of rubber, metal, or other suitable material, forming the outer shell or case of the ink-reservoir.

B is the conical point of the pen. This is made in the usual manner, and is furnished with a screw-thread, which screws into the end of the shell or case A.

C is the hollow point with which the writing isdone. Itis furnished with the yielding pin D, operated by a spring, E, in the usual manner.

F is the inner shell of the inkreservoir. lt is of a cylindrical form, corresponding with the outer shell, A, and within it is the chamber which contains the ink. At its lower end it is contracted in the curved form shown in the drawings, and terminates in the small aperture F, through which the ink flows to the writing-point. The outer side of the curved portion of F is furnished with one or more longitudinal grooves, G, (shown in section in Fig. 3,) for the passage of air downward between the parts B and F, where they come in Contact.

H is a ring placed between the inner and outer shells, A and F, to separate them a short distance, so as to leave an annular space around the outside of the ink-chamber between the shells. The ring H is perforated with one or more apertures, H', for the passage ot' air. The tube F is held in the ring H by friction or by a line screw-thread.

J is a cap, which is furnished with a screwthread, which enters a corresponding thread in the tube F. It also has a projecting flange,

J', which covers and closes the apertures H v when the cap is screwed down upon its seat.. If slightly unscrewed it opens them.

K is a piston or plunger itting in the cylindrical part of the tube F. It is furnished with a hollow thread, in which the screw-shaft L fits and turns. The screw-shaft L passes through the cap J, in which it turns, and is furnished with a collar, M, resting in a socket in J, which prevents any longitudinal motion. The collar M is held in its seat by the screwplug N, which also serves as a clamp to hold the collar from turning when it is screwed forcibly down.

The operation of my improved pen is as follows: When it is desired to fill the reservoir with ink the parts F K L J, which are all attached together, are removed frouhthe outer case. The aperture F' is inserted into theink, and the stem or shaft L is turned, by means of its projecting upper end, so as to raise the piston K. This draws up the ink and fills the chamber.v The parts are then replaced in the pen. Whileusing the pen air can be admitted to supply the place of the ink expended through the apertures Hl by slightly raising the cap J. The air passes down through the space between the shells A and F and grooves Gr, so as to enter the aperture F. The supply of ink can also be regulated by the piston K. If the ink flows too ireely, slightly raising the piston by means of the screw L will relieve it,

or, if clogged, slightly depressing the piston IOO as before described. The point-section can then be replaced, when the pen is ready for use.

VVlmt I claim as my invention is- The combination ofthe shellA, the point B, the shell F, with its grooves G, and ring H, with its apertures H', to form an air-chamber around the ink-reservoir, through which air can pass to the ink, substantially as described. zo

FRANK HOLLAND.

will start it. The air-chamber between the shells A and F also Serves as a non-conducting medium, to preventthe heating of the air above the ink within the chamber F by the warmth of the hand, and thereby forcing,` the contained inl; ont in large drops, as is commonly experienced with the pens 110W in use.

lt will not ordinarily be necessary to remove the ink-reservoir from the shell A in order to till it. The point-section B can be unserewed, so as to expose the end of the ink-reservoir, which can then be placed in the ink and filled,

Witnesses:

THEO. G. ELLIS, GHAs. L. BURDETT.

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