US471175A - Fountain-pen - Google Patents

Description

(No Model.)

J. HOLLAND-i FOUNTAIN PEN.

No. 471,175. Patented Mala-Z2, 1892.

JOHN HOLLAND, OF CINCINNATI, OHIO.

FOUNTAIN-PEN.

SPECIFICATION forrning part of Letters Patent No. 471,175, dated March 22, 1892.

I Application filed January 2, 1892. Serial No. 416,754. (No model.) I

To aZZ whom it may concern.-

Be it known that I, JOHN HOLLAND, a citizen of the United States, and a resident of Oincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Fountain-Pens, of which the following is a specification.

My invention relates to that class of fountain-pens in which an ordinary writing-point is employed with a reservoir-holder and feedin g bars or fingers to supply the writing-point from the reservoir. The principal objections to pens of this class now in use are that the flow of ink is irregular. They require to be shaken to start the flow and. frequently shaken to continue the flow for any length of time if the inflow of air is so limited as to prevent leakage when the pen is not used for any considerable time. If the air-duct is of sufficient capacity to induce a free fiow of ink when commencing to write, the pen will flood after writing for a while and cause a blot if the writing is suddenly stopped or the pen is suddenly withdrawn from the paper. Ihave discovered the cause of this irregularity in the supply of ink to the writing-point, and have invented means to overcome the defects in prior writing-pens of this class.

I attain the improved results by the means illustrated in the accompanying drawings,in connection with which the invention will be first fully described, and then the novel features will be particularly referred to and pointed out in the claims; but to render my invention more easily understood I willstate that it consists, primarily, in providing means to introduce a flow of air into the ink-reservoir above the body of the ink when a flow of ink is desired and to shut off such flow (automatically) when the fiow of ink endangers flooding. Keeping this object in view there Fig. 3 is a detail plan view of the feeding-fingers and air-supply tube.

Referring to the parts by reference, A is the reservoir-holder; B, the nozzle and penholder fitted in the end of the reservoir by screw-threaded connection, and O is an ordinary metallic writing-point. The pen is held in the nozzle B by a cylindrical plug D, which has a bead (Z at its inner end, which bears against the inner end of the nozzle 13 and has its forward end bifurcated and tapered upon one side to form feeding-fingers d. The side of the plug D adjacent to the pen-point O is flattened and longitudinally grooved to form a duct, through which the ink passes from the reservoir between the plug and pen-point O. The fingers cl. feed the ink to the writing-point when the pen is used. The plug D is centrally perforated from the inner end to the slot, which severs the fingers d, and within this perforation is fitted the air-tube E, which when the parts are in position, as shown in Fig. 1, extends. to near the top of the ink-reservoir and above the ink. Now it will be seen that air will pass through the space between the feed-fingers d, through the aintube E, and into the air-space in the upper end of the reservoir above the holder and induce a regular flow of ink to the writing-point. Should the flow be copious, the ink will, before there is any danger of flooding, [ill the space between the fingers and cut off the supply of air to the air-tube and stop the flow of ink from the reservoir until the supply of ink in the feeders has been so nearly used as to free the mouth of the air-tube. I have shown the plugD and the air-tube made separately and fitted together, because it is cheaper to make them so; but, if desired, they can be made in a single piece.

By my improvement I am able to dispense with the feed bar or finger on top of the pen,

which interferes with the elasticity of the point and is uncleanly.

I claim 1. In a fountain-pen, the combination of the reservoir-holder, the nozzle, the writingpoint, the plug, the feeding-fingers for holdrated plug D, terminating in feeding-fingers ing the pen, and the air-tube eoinmunieat- (Z, and the air-tube E, fitted in said plug and [0 ing' with the feeding-fingers and extending to extending to near the upper end of the resernear the top of the reservoir, substantially as voir.

5 shown and described. JOHN HOLLAND.

2. The combination, substantially as here- \Vitnesses: inbefore set forth, of the holder A, nozzle B, GEO. J. MURRAY,

pen C, the longitudinally grooved and perfo- 1 FRANK S. DAVIS.

Images