US828920A - Fountain-pen. - Google Patents

Description

N0. 828,920. PATENTED AUG. 21, 1906. G. F. BRANDT. FOUNTAIN PEN.l

APPLIOATION FILED nso. e, 1905.

UNITED STATES PATENT OFFICE..

GEORGE FRANKLIN BRANDT, OF BOSTON MASSACHUSETTS, ASSIGNOR ONE-HALF TO CHARLES BRANDT, OF BOSTON, MASSACHUSETTS.

FOUNTAIN-PEN.

Specification of Letters Patent. Application filed Deoeniber 6, 1905. Serial No. 290.541.

Patented Aug. 21, 1906.

To a/ZZ whom it'may concern:

. Be it known that I, GEORGE FRANKLIN BRANDT, a citizen ofthe United States, residin'g at Boston, county of Suffolk, and State of Massachusetts, have invented an Im rovement in Fountain-Pens, of which the -olloW ing descri tion, in connection With the accompanying raWings', is a specification, like numerals on the drawings representing like parts.

This invention relates to that class of fountain-pens in which the'pen-point 'is adapted to be Withdrawn into or projected from an open-ended ink-reservoir, such pens commonly being known as non-leakable or fdisappearing pens. i The mventlon aims to rovide a novel construction of pen, all as Wi l be more fully hereinafter described and then pointed out in the claims.

In the drawings, Figure 1 is a longitudinal central section of a en embodying my invention, said view s owing the pen Withdrawn into the ink-'reservoir and the cap a plied to the holder. Fig. 2 is a view, part y 1n section, showing the pen projected ready for use. Fig. 3 is a detall of the pen-support and its connecting-stem. Fig. 4 is' an enlargedsectional view through the cap and open end of the ink-reservoir, showing the manner in which the open end of the ink-reservoir is closed When the pen is Withdrawn. Fig. 5 is a sectional vieW of a portion of the pen, showing one Way of app ying the cap thereto. Fig. 6 is a perspective View of the valve-plug in the end of the cap; and Fig. 7 is a section on the line a; w, Fig. 2..

3 designates the ink-reservoir, Which is provided With an o en end 4, through which the en is projecte Said open end 4 is of less iameter than the interior of the ink-reservoir.

5 designates the pen-point, which is carried by a suitable pen-support 6, that is arranged to be Withdrawn into or projected through the open end of the ink-reservoir. This pen-support may have any suitable or usual construction'and is herein shown as comprising a feed-bar 7, having a usual feedgroove 8 therein and a clamping-ring 9, which encircles the feed-bar and one end of the pen and holds the latter firmly in place. The clamping-ring has substantially the same diameter as the open end 4 of the ink-.reservoir, so that When the pen-support is 'proj ected into said open end, as shown in Fi s. 2 and 5, said ring completely fills the end o the reservoir and prevents the esca e of ink therefrom except through the feed uct or groove 8.

`10 designates a stem which is connected vto the en-support and which extends longitujects beyond the closed end thereof. The end of the stem 10 is secured to the closed end 11 of Whatl have termed a holder 12, said holder being shaped to telescope over the ink-reservoir and having a length nearly equal `to that of the reservoir, as best seen in Fig. 2. The ink-reservoir is preferably made With an exterior shoulder. 13, against which the end of the holder 12 abuts When the pen is projected, as shown in Figs. 2 and 5, and

the exterior shape of the holder conforms to the exterior shape of the exposed portion of the ink-reservoir.

In order to prevent any leakage of ink through the aperture in the closed end of the ink-reservoir, through which the stem 10 rojects, I employ a iiexible tubular pac 'ng member 14, one end of Which is tightly secured to the stem 10, as at 15, and the other 'dina ly through the ink-reservoir 3 and proend of which is tightly secured to the end of the ink-reservoir. One convenient Way of securing it to the reservoir is to provide the end of the reservoir With a plug 16, having an aperture 17 therein, through which the stem projects, and also having a nipple 18, over Which one end of the tubular'member 14 is placed and to which it is secured to make a non-leakable joint. The iiexible member 14 may be of any suitable material-such, for instance, as rubber. When the pen is projected, as shown in Fig. 2, the exible member 14 is in a substantiall straight unfolded condition, 'as shown in otted lines, Fig. 2; but when the holder 12 is drawn backwardly over the ink-reservoir, thereby to .Withdraw the pen into the ink-reservoir, the end of the tubular member 14, Which is fastened to the stem 10, is drawn into and partly through itself, as best shown in Fig. 1. This form of packing makes an absolutely tight joint Which is practically indestructible. The lug 16 is preferably made with a iiange 19, W 'ch serves to properly position the plug when the parts are being assembled. v

20 designates steadying-pins projecting from the stem 10. These pins are of a` engages the tapered portion 22 of the holder, but does not engage any portion of the ink- I reservoir 3. The. open end of the cap 21 is provided with the interior tapered portion 23 and with a shoulder or corner 24, both of, which are shaped to engage the outer surface 22 ofthe holder, as best seen in Fig. 1.` The cap is made of two parts, one, the cylindrical member 21, which is open at both ends and which is interiorl' screw-threaded at one end, and the other, t e valve member, which is screwed into the screw-threaded endv of the cylindrical member. valve-plug is formed with the tapered or conical portion 27, the screw-threaded shank portion 26, and the cap or iiange portion 28. The valve member or valve-plug is screwed into the cylindrical member 21. from i the screw-theaded end thereof, and when the valve-'plug is in placethe iiange portion 28 engages the end of the' cylindrical member 21, and thus positively -positions the valve portion 27 properly, so that when the cap` is a plied to the pen said`valve portion will c ose the open end ofthe reservoir, .as shown in Figs. 1 and 4. Y l

The ink-reservoir is provided at its end with exterior screw-threads 29, which are adapted to engage the screw-threadedportion 25 of the cap when the latter closes the pen. The valve-plug 27 is of a shape to partially enter` the open end 4 of the ink-reservoir and to engage the inner corner 30 thereof, and since the taper ofthe plug is on a different angle from the'end of the ink-reservoir the space 31 between the inkreservoir end and plug when the pen is closed is sufficient to prevent the ink from working over the end of the ink-reservoir by capillary attraction. The exterior screw-threaded portieri` 30 of the ink reservoir and the screw threaded portion of the plug 26 are of the same diameter, and they both engage the same interiorly screw threaded ortion 31 of the cap. This simplifies greatly t e construction ofthe pen. The holder'is slotted, as at 32, .to receive a pin or projection 33, extending from the ink-reservoir.4 This slot is preferably inclined, as shown in Fig. 2, and is provided at its end with a locking-notch 34, 1nto which the pin 33 may be turned, thereby to lock. the pen either in its extended or Withdrawn position.

In opening the pen for' use the cap 21 is rst nnscrewed from the screw-threaded portion 29 of the ink-reservoir and then removed, it preferably being placed on the opposite end of the holder, as shown in Fig. 2, and thereafter the pen may be projected by grasping the portion 3 of the ink-reservoir rigidly secured to the holder, and t The pen-point The valve member or with the fingers of one hand and the holder 12 with the other hand, turning the holder to release the pin {S3-from one locking-notch 34 and then sliding the holder forwardly on the ink-reservoir into the osition shown in Fig. 2. When the holder as reached this osition, it is locked by turning it suiiicient y to cause the pin 33 to enter the adjacent locking-notch.

It will be noted thatv the pen-support is erefore moves -with the' holder. thereforeis always the same distance from the ta ered end 22`of the holder, and it is possib e to close the'pen with the cap 21 without withdrawing the pen into the reservoir, as seen in Fig. 5, and this may be done without danger of injuring the pen-point 5 by bringing it in contact with the valveplug 26. v The drawings illustrate one embodimen of my invention only.

4Having described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a fountain-pen, an ink-reservoir operi at one end, a movable pen-support adapted stem connecting the holder and pen-support, 9

said stem projecting through the closed end of the ink-reservoir, and a iexible tube' havin g one end secured to the ink-,reservoir and the other to the stem of the pen-support.

2. In a fountain-pen, an inkereservoir having an open end, a pen-support movable within said open end, a stemconnected to said pen-support and extending through the closed end of the ink-reservoir, means exteriorto the ink-reservoir to operate said stem, and a lexible tube secured at one end to the ink-reservoir, and at the other end to the stem.

3.. In a fountain-pen, an open-ended inkreservoir, a pen-support within the open end loi' said reservoir and adapted to be withdrawnltherein, a stem connected to the ensupport and extending longitudinally o the Aink-reservoir, said stem having, steady-ing projections to engage the inner walls of the lnk-reservoir, and means connected to the stem to move the p enfsupport relative to the reservoir.

4J In 'afountain-pen, an ink-reservoir o en at o1'1 eeI'1d,1-aY movable pen-su port Wit 'n the o eneiidjof the reservoir, a li) whicli, tlielink-rese'rvoir'- is received, a stem Aconnecting .the holder and the pen-support, and Vsteadyiiig projections carried -by the stem and engaging the inner walls of the ink` reservoir. 5. In a fountain-pen, an ink-reservoir open at oneend, a movable pen-support Within the open end of the reservoir, a holder Within which the ink-reservoir is movably received',

older Within IOC I at one end, a movable pen-support within the open end of the reservoir, a holder having a curved slot and within which the ink-reservoir is received, a stem connecting the holder and pen-support, and a pin projecting from the reservoir and engaging the slot in the holder said slot having at each end lockingnotches.

around said stem.

end screw-threaded, and a valve-p 7 ln a fountain-pen, an open-ended inkreservoir, a movable pen-support within the open end of the reservoir, a holder Within which the ink-reservoir telescopes, a stem connecting the holder and the pen-support, a plug having a flange fitting over the closed end of the reservoir and avnipple extending within the reservoir, a flexible tube iitted at one end over said nipple and at the other end an ink-rservoir, a pen-support capable o being withdrawn into the reservoir, a holder telescopin on the ink-reservoir and externally tapered at its lower end, and a cap having an open end to it over the tapered end of the holder and provided interior y at its closed end with means for connection with the end of the reservoir, said open end having separated bearing-surfaces whereby the cap may be used to close the pen at either the Withdrawn or pro- 8. Aountain-pen comprisin jected position of the latter.

position of the reservoir and holder by being screw-threaded to the reservoir.

10. A fountain-pen comprising an ink-reservoir open at its forward end, exteriorly c lindrical for substantially its entire length and provided with an external shoulder, a holder within'which the ink-reservoir-is movably received, the end of the holder being ada ted to abut the shoulder when the pen is prolected, a pen-support within the open end of t e ink-reservoir, and connections between the en-support and holder', the diameter of the orwardend of the holder being substantially the same as that of the ink-reservoir adjacent the shoulder.

11. A fountainen comprisihg an ink-reservoir o en at its orward end, exteriorly ci lindric for substantially its entire lengt Cap,

provided with an external shoulder near its open end and tapered forwardly of the shoulder, a pen-support within the open end of the ink-reservoir, a holder within which the inkreservoir is movably received, and connections between the pen-support and holder,

the end of the holder adapted to abut thel shoulder of the reservoir when the pen is projected, and said holder being tapered at its end to form a continuation of the taper of the ink-reservoir.

12. In a fountain-pen, an open-ended inkreservoir provided with exterior screwthreads near its open end, a movable pensupport within the-reservoir, a cap having an interior screw-threaded portion of uniform diameter near its outer end, and a conical valve-plug screw-threaded into the end of the cap, a portion of the screw-threads ofthe cap being adapted to be engaged by the exterior screw-threads of the in reservoir.

13. A fountain-pen comprising an openended ink-reservoir provided with screwthreads, a movable pen-support within the reservoir, and a cap having a conical valveplug screw-threaded into its closed end, the conical portion of the plug adapted to enter the open end of the reservoir and contact with the corner thereof, said cap having screw-threads to engage those of the ink-reservoir.

14. In a fountain-pen, an open-ended inkreservoir provided with exterior screwthreads near its open end, a" pen adapted to be withdrawn iiito the ink-reservoir, and a cap formed of \two members, one a cylindrical member open at both ends and having interior screw-threads at one end, and the other a conical valve member which is screwed into the cylindrical member from the screW-threadedend thereof, said valve member being adapted to close the open end of the ink-reservoir when the cap is applied and constituting the closed end of the cap.

15. In a fountain-pen, an open-ended mkreservoir provided with exterior screwthreads near its open end, a pen adapted to be withdrawn into the ink-reservoir, and a said cap comprising a cylindrical member open at both ends and havin interior screw-threads at one end, and a va ve member presenting a conical valve portion for closin the end of the ink-reservoir, a screwthrea ed shank portion for enga ing the 1nterior screw-threads of the cylin rical member and a head portion to engage the en said cylindrical member.

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

GEORGE FRANKLIN BRANDT.

Witnesses:

LoUIs C. SMITH, CHARLES BRANDT.

dof.

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