US 225810 A
Description (OCR text may contain errors)
G. H. DOWNES. Sty'lographio Fountain-Pen.
No. 225,810.. Patented Mar. 23,1880,
Witnesses- I'n/ve'mt'o r:
UNITED STATES PATENT OFFICE.
CHARLES H. DOWNES, OF JERSEY CITY, NEW JERSEY.
SPECIFICATION forming part of Letters Patent No. 225,810, dated March 23, 1880.
Application filed February 9, 1880.
To all whom it may concern:
Be it known that I, CHARLES H. DoWNEs, of Jersey City, in the county of Hudson and State of New Jersey, have invented certain new and valuable Improvements in Stylographic Fountain-Pens; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of thesame, reference being bad to the annexed drawings, making a part of this specification, and to the letters and figures of reference marked thereon.
Figure l. of the drawings is a diametrical section through the lower portion of a stylographic fountain-pen, highly magnified, having my improvements applied to the pointsection. Fig. 2 is an enlarged perspective view, in detail, of the threaded notched section and its screw-plug. Fig. 3 is a cross-section taken in the plane indicated by dotted line as I 00, Figs. 1.
Similar letters of reference indicate corresponding parts.
This invention relates to writing-instruments known as stylographic fountain-pens, having a point-section which is removably attached to a hollow handle that serves as a reservoir for Writing-fluid.
My invention consists, mainly, in adj ustably attaching a notched and screw-threaded tube directly to the interior surface of the point-section and inclosin g the upper portion of the needle, also a spring and an adj ustable p1ug,inside of said tube, secure from contact with ink.
The invention also consists in a single independent externally notched and screwthreaded tube, which is adapted for use inside of and attached directly to the point-section of a stylographic fountain-pen, in combination with a needle, a spring, anda plug for adjusting the tension of this spring and keeping it secure from contact with ink, as will be fully understood from the following description.
In the annexed drawings, A designates a hollow case or handle, which serves as a reservoir for writing-fluid, and which may be constructed in any suitable manner for supplying ink to the point of the pen during the act of writing.
B designates the point section which is shown in Fig. 1 screwed into the end of the handle A. This section B is constructed with a tapered writing-point, a, which has a fine bore through it, and a durable tip, a, of metal or other suitable substance. Inside of the section B is a female thread, b, which is designed to receive male threads 0, that are made in flanges c on the exterior surface of atubular section, C, between which screw-threaded flanges notches (I are made, as clearly shown in Figs. 2 and 3. The tube 0 is endwise adjustable in the point-section B forthe purpose of nicely regulating the desired amount of protrusion of the point of a needle, D, beyond the writing-tip e and compensating for the wearing away of the needle-point. This adjustment may be easily effected by removing the pointsection B from its handle A and inserting the bit of a screw-driver into notches ff in the upper enlarged end of the tube 0. The stem or upper portion of the needle D passes freely through the lower end of the tube 0, and has check-collars g g 011 it. Inside of the tube G the needle D is surrounded by a spring, it, one end of which bears onthe collar g and the other end presses against an adjustable screwplug, is, which is tapped inside of the tube 0, and preferably notched to receive the bit of a screw-driver, for adjusting it and thereby regulating the tension of the spring h on the needle D and keeping the collar 9 down on its seat when pressure is removed from the necdle-point In practice the lower part of the needle D will be tapered and the bore of the point a correspondingly tapered, so that when the needle is on its seat in said bore it will act as a valve and prevent any escape of ink from the point-section.
It will be seen that the small tube 0, which serves as a holder for the needle, its spring, and screw-pin g, is adj ustabl y attached directly to the inner threaded surface of the point-section B. At the same time provision is made, by means of the notches d in the exterior of the tube G, for allowing a free flow of ink past this tube to the point of the pen.
It will also be seen that, notwithstanding tube 0 is entirely submerged in ink, no ink can enter it to corrode the spring h or clog the needle where it passes through this tube.
By removing the point-section B from the handle Athe reservoir in the latter can be supplied with ink.
In this application I do not claim the subject-matters embraced in three interferences, in which a former application of mine, filed September 12,1879, has been placed, said subject-matters being as follows: Thecornbination, with the handle or pen-case of a fountainpen, of the needle holding and SLlDllOlLlllg tube attached to and supported by the walls of said handle or case; in a fountain-pen, the combination, with a sectional handle, of the needle holding and supporting tube inserted and secured in the lower section; in a fountain-pen, a spindle-holder adjustabl y held at the lower end of the ink-reservoir in a fixed part of the outer case; in combination with the needlecarrying tube, the needle-valve fitting loosely within said tube and provided with a stop to limit its backward movement.
Having described niyinvention, I claim 1.111 a stylographic fountain-pen having a section, B, which is provided with an internal screw-thread, a threaded notched section, 0, adjustable therein, as described.
2. The screw-threaded notched section 0, arranged within the section B, and carrying within it a spring, a needle, and a screw-plug substantially as herein set forth.
CHARLES H. DOWNES.
BENJ. G. PLATT, O. H. COURT.