US810327A - Fountain-pen. - Google Patents

Description

PATENTED JAN. 16, 1906.

M. R. CROSSMAN.

FOUNTAIN PEN.

APPLICATION FILED MAY 29.1905.

UNITED STATES PATENT oEEIoE.

FOUNTAIN-PEN.

Specification of Letters Patent.

Patented Jan. 16, 1906.

Application filed M y 29,1905. Serial No. 262,791.

T0 all whom, it may concern:

Be it known that I, MARTIN R. CRossMAN, a citizen of the United States, and a resident of Boston, county of Suffolk, and State of Massachusetts, have invented an Improvement in Fountain-Pens, of which the following description, in connection with the accompanying drawings, is a specification, like numerals on the drawings representing like parts.

This invention relates to fountain-pens, and particularly to a device for preventing pens from sweating.

Most fountain-pens sweat more or less, (this termbeing used to describe the film or coating of ink which gathers between the holder and the cap when the cap is covering the pen-point) and whenever a pen does sweat in this way it becomes necessary to wipe the ink from the outside of the holder before the pen can be used.

I have provided a novel antisweating device which can be applied to any pen and which by its presence prevents all leaking or sweating.

My improved device is in the nature of a cap, which fits tightly over the pen-point and covers the air-holes therein, and thus prevents either escape of ink from the holder or the admission of air thereto. The cap is made to fit tightly over the pen-point. Therefore its presence does not interfere in any way with the operation of removing or replacing the regular cap for the holder.

l/Vhen in use, my improved antisweatingcap is supported and carried entirely by the pen-point and does not contact with the regular cap for the holder.

In the'drawings, Figure 1 shows a fountainpen having my improvements applied thereto, the cap for the holder being shown in section. Fig. 2 is asection on an enlarged scale on the line m, Fig. 1. Fig. 8 is a view of the antisweating-cap. Fig. 4 is a view of a holderclip which is especially constructed to sustain my antisweating-cap when the latter is not in use.

3 designates the holder or barrel of a fountain-pen; I, the usual cap which covers the pen-point when the pen is not in use; 5, the pen-point, and 6 the feed-bar. These parts are or may be of any suitable or usual construction and form no part of my present invention. My invention resides in a cap which is entirely distinct and separate from the regular cap 1 and which is of a shape to tightly fit over the pen-point 5. In the drawings, 7 designates this cap, which I have referred to as an antisweating-cap. The cap 7, it will be seen, fits tightly over the back of the pen-point 5 and closes the air-hole and the slit with which all pens are provided. The cap 7 may be made of any suitable material. A metal cap which had the proper shape to tightly fit over the pen-point would embody my invention; but it will be obvious that a cap made of some non-yielding material would fit only a certain size and shape of pen, and to equip a variety of pens with my invention would necessitate the making of a considerable number of caps7 of different shapes. I prefer, therefore, to make the cap 7 of some yielding materialsuch, for instance, as rubberso that a certain sized cap can be used with pens of different sizes and shapes. I prefer also to .make the cap substantially conical in shape, as shown in the drawings. It will be understood, of course, that the cap is closed at its end.

hen a cap embodying my invention is placed on the pen-point of a fountain-pen, the air-hole and the slit of said pen are closed, and therefore no ink can escape from the pen, nor can any air get into the holder. It will be impossible, therefore,for the pen to sweat that is, for the ink to gather between the cap and the holder. Another result which follows from the use of my invention is that the cap7 when in place keeps the pen-point moist so that the pen is ready for use the instant that the cap is removed. I prefer to provide the base or mouth of the cap with the bead or thickened portion 15, which causes the cap when in place to hug the pen more tightly.

My invention also includes a novel holder or support for the cap 7 when the pen is in use. Referring to Fig. a, 10 designates asuitable clip, which maybe secured in some suitable way to the cap 4t of pen and by means of which the pen is retained in the pocket. I have provided this clip with a tubular holder 11, which is. adapted to receive the pointed end 12 of the cap, all as shownin Fig. 4:. My invention, however, is not limited to the form of holder shown herein, as any suitable means for supporting the cap 7 when the pen is in use may be employed.

Various changes in the construction of the cap and its holder may be made without departing from my invention.

My improved device will also prevent the pen from leaking if by chance it is carried bottom side up.

Having fully described my invention,what I claim as new, and desire to secure by Letters 5 Patent, is

In a fountain-pen, a holder, a pen-point, a cap to fit over the holder and pen-point, an antisWeating-cap of a size to be received Within first-mentioned cap and of a shape to fit IO tightly over the pen-point and means carried by the pen to sustain said antisWeating-cap when the latter is not in use.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

MARTIN R. CROSSMAN.

Witnesses:

Louis 0. SMITH, MARGARET A. DUNN.

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