USRE9890E - Island - Google Patents

Description

A. T. CROSS.

STYLOGRAPHIG PEN.

Reissued Oct. 11,1881.

FIG. 2.

FIG.

FIG. I.

WITNESSES.

UNITED STATES PATENT OF ICE.

ALONZO T. CROSS, OFPROVIDENOE, RHODE ISLAND.

sTYLoeRA'Pi-uc PEN.

' srnorrrcs'nolv forming art of Reissued Letters Patent No. @890, ems otet.;.""n, 1081.

Original No. 189,304, dated April 10, 1877; Applicatigp filed October 98. 1879.

To all whom it may concern.-

.Be it known that I, ALONZO T. Gnoss, of Providence, in the State of Rhode Island, have invented an Improvement in Fountain-Pens, ofwhich the following is a specification.

My invention may be applied to fountainpens either where the writing is performed by means of a tapering tubular point combined with a centrally-arranged needle or :0 where the ordinary steel or gold pen is used; and it consists in the combination of a needle,

valve, and air-tube with a cap-piece constrncted with along interior screw-thread, by means of which the adjustment of the valve and needle may be properly eflected and the joint at the same time kept ink tight. The connection between the cap and the outer case is made by a close or shoulder joint, and this cap is to be removed, with its connected needle, valve, :0 and air-tube; in order to properly replenish the ink-chamber; and it also consists in a needle with its inclosing-tube, in combination with an ordinary writing-pen and a connecting-tube of greater diameter than the needle inclosing 2 5 tube, and also in providing the vent-screw with an extension or tip for frictionally holding the point-cap when the pen is in use. I

Figure 1 is a longitudinal section, showing a fountain-pen with a. tubular writingpoint. Fig. 2 is a sectional view of the central needle,

valve, and air-tube. Fig. 3 is an enlarged sectional view of the tubular writingpoint and valve-seat. Fig. 4 is a sectional view, showing the combination of the capillary tube and needle with an ordinary writing-pen.

A is the outer case, and B the ink-chamber, which comprises the annular space between the outer case or tube, A, and the central spindle. The spindle combines in'itselt the needle 40 D, valve E, air-tube F, rod K, and the adjusting-screw G, carrying at its upper end the vent-screw H.-

Within the tube A is screwed the cap-piece I, having along interior thread to receive the screw G. The cap 1 screws down to a shonlder, 1, thus forming a tight joint, and the screw G is made of extra length and greased with tallow, in order that the ink may not pass, by attraction, between the threads of the cap and screw.

The screw of the vent-valve H has one side 1, may be made of an alloy filed away, so as to leave an air-passage, it, along the side of the screw. This passage will :be closed tight whenever the screw is screwed down to the shoulder j. The screw G is made tubular and terminates in the airtube F, at the lower end of which are located one or more orifices, f. To the end ot' the airtube is attached the solid wire rod" 'K, the lowerend of which constitutes the valve'oc E,c losing, by the action of the screw G, downupon the conical valve-seat L.

The needle- D extends below the valve E, v andis made to project slightlybeyond thee; tremity of the small tube M, which, in Fig'. 1', constitutes the writing-point, and in Fig.4, serves to deliverthe ink into a tube, N, off larger diameter, and this enlargement of the tube, in eombinationwith thaprojecting ueedle and the pen P, constitutes a very iu|por-. 7o tant featureot my invention, effectually preventing the clogging or obstruction of the capillary tube M.

The writing point or tube M of Fig. 1 may be made of an alloy of platinum and iridium, or of any other suitable material non-corrosive and not easily worn by being moved over a paper surface.

When the pen shown in Fig. 1 is not in use the point M is to be covered'by the cap tube 0, held by friction, and upon removal from the point it may be placed for safe-keeping upon the cylindrical portion of the tip J, which is made of the proper size for this pu rose.

The-neeedle D, like the writing-point ,Flg. 85

of platinum and iridium, which is subject to but very slight wear from the friction of the surface of the paper, and is not acted upon by the acids contained in the ink; but other suitable material may be used, if preferred.

In order to fill the fountain or chamberB with ink the central spindle is to be entirely removed by unscrewing the cap-piece I from the outer case, A, and the ink poured into the chamber, thepoint M being covered by the finger or otherwise, so that the ink cannot drop thezefrom. The spindle is then to Ueinsorted and screwed down, so as to brin the needle with its point slightly projecting from the end of the tube-M, and with the valve ll nearly to its seat. Tuen upon opening the vent-passage h, by unscrewing the vent-screw H the pen will be ready for use, the ink flowiug in proper quantity from the writing'point of the tube M. As the writing progresses the air will pass down the air-lube F and through the orifice finto the upper end of the chamber B above the ink, thus allowing the ink to flow from the writing-point onto the paper. When the Writing is finished the valve E is to be screwed down to its seat, the vent h to be closed, and the cap placed over the tube M. The pen may then be safely carried in the pocket under all circumstances.

The air-tube F should be made of capacity sufiicient to contain the amount of ink forced from the chamber-B by the expansion caused by extremes of heat, thus preventing the ink from being forced out at the vent h when the pen is in use. The natural heat of the hand impart ed to the outer case, A, is sufficient to force a quantity of ink from the chamber 13.

- y-"lnk isconveyed to an ordinary writing-pen,

B, Fig. 4, throughthe bent tube N, of larger diameter than the tube M, from the end of which the needle D protrudes, and by means of the needle I) the tube M may be kept free from obstruction of any kind, rendering the pen P positive and uniform in its action.

.and adjustingscrew together,

valve, air-tune, I am enabled to do away'with the complication and expense of previous forms.

I claim as my invention- By attaching the needle,

1. The needle D, valve E, airtube F, and v vent-screw II, in combination with the cap I and outer case, A, substantially as described.

2. The needle I), tube M, and pen P, in combination with the ink-conveying tube N, of greater diameter than the tube M, substantially as described.

3. The combination of the case A, cap-piece I, adapted to screw into said case, the airtube and spindle, and the needle D, connected directly thereto, whereby the needle may be ad justed by turning the cap-piece I, as set forth.

4. The combination of the cap piece I, threaded as described, and fitted to the case A, the tube F, spindle K, valve E, and needle I), said valve being adapted to close upon its seat by turning the. cap-piece I, as set forth.

EDWARD (Jam), IIARMUN S. Banooon.

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