US651736A

US651736A - Fountain-pen.

Info

Publication number: US651736A
Application number: US73929899A
Authority: US
Inventors: Paul E Wirt
Original assignee: Individual
Current assignee: Individual
Priority date: 1899-12-05
Filing date: 1899-12-05
Publication date: 1900-06-12
Anticipated expiration: 1917-06-12

Description

No. 651,736. Patented lune4 I2, |900.

P. E. WIRT.

FOUNTAIN PEN.

(Application filed Dec. 5, 1899.)

(No Model.)

Emmi Mrz UNITED STATES:-

APirri-:rrr OFFICE.

PAUL E. VIRT, OF BLOOMSBURG, PENNSYLVANIA.

FOUNTAIN-PEN.

SPECIFICATION fol-ming part of Letters Patent No. 651,736, dated June 12, 1900. AAppnmiml filed December 5,1899. serial No. 739,298. (No modern VT0 all whom it may concern:

To this end the pen-reservoirr holder having a maximum ink-` holding or reservoir capacity' to avoid constant refilling, while at the same time having suitable provision for positively preventing flooding or dropping of the ink from the penpoint, which is very likely to occur where inkreservoirs are employed beyond a certain limited size or capacity in fountain-pens.

Heretofore in the construction of ,fountainpens it has `onlybeen, possible to constructthe holders or barrels with a sQmewhat-limited ink-holding or reservoircapacity'on account of the well-known fact that fluids are not so well retained within tubes or like spaces by atmospheric pressure in large chambers as in smaller chambers which are closed at one end; but the present invention obviates this difficulty that has been met with by fountain-pen manufacturers by providing the holder or barrel with well-defined "separate interior ink-reservoirs in addition to the duct leading to the pen, 'said reservoirs respectively holding the main supply of ink. and a predetermined supply for,servic e.

It isof the greatest advantage to Vhave af large supply of ink in a large 'reservoir in fountain-pens, inasmuch as the constant`fill' time not necessitating an undue or unwieldy enlargement of the reservoir holder or barrel.

A further object of the invention is to provide, in connection with the main supply and service reservoirs of the holder, suitable means for permitting of the convenient reinvention primarily 4contemplates a novell construction of fountain-V plenishing of the supply of ink in the servicereservoir from the main supply-reservoir `when this is necessary,while at the same time providing for totally cutting oifcommunication between the two reservoirs when the pen is'in use and as long as there is a suiicient quantity of ink in the service-reservoir for supplying the pen. In carrying out this object the invention provides means for positively preventing flooding or dropping of ink from the pen, while at the saine time admitting of the use of a main supply-reservoir of as large proportions as the marketable sizes of Ithe pen will permit.

Other objects and advantages will readily suggest themselves to those skilled in the art as the nature of the invention is better understood; and the same consists in the novel combination and relation of parts hereinafter more fully described, illustrated, and claimed.

, The essential feature of the invention, involving the provision of the holder with a main supply-reservoir and a service-reservoir in the form'rof atube apart from the ink-duct leading to the pen, in combination with suitable means for totally 'cutting'off or opening up communication between said reservoirs, is necessarily susceptible to embodiment in a variety of modifications-without departing from the spirit or scope of the invention; but the' preferred embodiment of the improvement is shown in the accompanying d rawings, in which- Figure l is a general perspective view showing the `position"4 of the preferred f form of holder in the hand, illustrating one of the useful features of4 the annular enlargement or swelled portion constituting a part of the main supply-reservoir in the preferred form of the holder. Fig. 2 is alongitudinal sectional view of the preferred form of the invention, showing in Vfull lines the movable supplemental service-reservoir seated so as to constitute a cut-olf between the two reservoirs and illustrating in dotted lines the position of said reservoir in the straight `bore of the holder, at the outer end thereof, :to facilitate filling of the service reservoir. Fig. 3 is a similar view showing a `modification involving the movable supplemental service-reservoir and showing the use thereof in connection with a holder havinga detachable nozzle or pen bearing section and aplain IOO Io sociated with the form of joint or closure shown in Fig. 2 ofthe'drawings. Fig. 5 is a detail cross-sectional view on the line 5 5 of Fig. 4. Fig. 6 is la detail in perspective of the modified form of movable supplemental reservoir shown in Figs.'4 and 5.

Like numerals of reference designate corresponding parts in the several figures of the drawings.

The present invention contemplates ,as the essential feature thereof the provision of the holder or barrelof a fountain-pen with separate interior main-supply and service inkreservoirs in addition to the usual ink-duct leading to the penand combined with suitable means for totally cutting off'communication Atherebetween when the service-reservoir is supplied with ink for the pen or opening up communication between the two reservoirs when the service-reservoir is depleted and it is desired to refill the same from the main supply in the other reservoir. This combination may be embodied in a variety of con. structions without departing from the invention; but the preferred form of the invention involving the im proveme'nts is plainly shown in Figs. l and 2 of the drawings. In this` construction the pen holder or barrelis designated by the numeral 1, and the same is of thev usual cylindrical form in cross-section,

` bntisr preferablyprovided at a point intermediate the ends thereof with an annular enlargement or swelled portion 2, which produces an interior main supply-reservoir 3 of a maximum capacity and designed to contain a large supply of ink which is held in reserve for use in replenishing the service-reservoir, to be presently referred to. The intermediate annular enlargement or swelled portion 2 of the form of holder shown in Fig. 2of the drawin, .,ffs not only provides an inte- Vrior` main supply-reservoir of maximum capacity, but also possesses several other advantages which are quite important in fountain-penl structures.

Although, as will hereinafter appear, the invention is thoroughly practical in connection with a holder straight throughout its length, still in order to provide for the two necessary reservoirs the straight holder may. have to be made thicker than desired by some users.l So it'hasl been found advantageous to utilize the intermediate annular enlargement or swelled portion 2 not only to provide the large main supply-reservoir, but also to reduce the bulky appearance of the penand to enable the user to clasp and hold it in writin g more comfortably between thethumb and fingers. In short, the construction described provides for a maximum supply of inkwith the least bulk at the clasping or holding point, and inasmuch as the enlarged or swelled portion comes above the point where the holder is held and is therefore out of the way the main ink-supply is located well above the heatl from the fingers, and therefore reduces the possibility of the expansionof the fiuid past the joints. The position of the pen lin the hand with the swelled portion disposed abovethe clasping-point of the fingers is plainly shown in Fig. 1 of the drawings.

In the preferred form of. holder just described, as shown in Fig. 2 of the drawings, the same may be provided at one end thereof with any suitable form of pen-.bearing section 4, carrying the pen 5 and feeder 6; but it is not important to the successful carrying out of the invention what type of pen and feeder is employed, nor the special arrangement ofl these parts, it only being desirable that there be associated with the holder having the duplex ordouble reservoirs a feeder or feeding device providing for delivering ink to the pen by capillary attraction. However, it is one of the essential features of the invention to provide the :holder or barrel with two ink-reservoirs entirely separate or apart from the duct leading to the pen, and in the preferred formof the improvement there is provided in addition to the main supply-reservoir 3 a supplemental service-reservoir 7. This supplemental service-reservoir 7 is made as large as possible and is ordinarily of about as great capacity as the average-sized chamber or space within the ordinary sizes of fountain-pens now on the market. The said supplemental service-reservoir 7 may be provided in different ways, butin theconstruction now being described is preferably in the form of a tube open at one end and closed at the V other to provide a complete chamber or space for the reception of the ink to be supplied directly to the pen, while at the same time constituting a cut-off to close or open up communication between the two reservoirs at will. The open end of the tubular supplemental Areservoir 7 is disposed toward the pen-bearing section ofthe holder and is adapted to register wil hin an interior annular shouldered seat 8, formed within the holder at what may be properly termedv the lower extremity7 of the main supply-reservoir 3. The tubular supplement-al reservoir 7 is longitudinally movable within the holder, and whenthe ope-n end thereof is seated against the seat 8 communication is entirely cut off between the interior of the said reservoir 7 and the main supply-reservoir 3, so that Vonlythat portion of theink within the service-reservoir 7 will be supplied to the pen. As the service-supply of ink is no greater than that ordinarily placed within the usual fountain-penholders, there is nopossibility of flooding or dropping of ink from the pen on account of overweight of ink in the reservoir supplying the pen.

IOO

ixo

ISO

To provide for replenishin g or refilling the movable supplemental reservoir 7, it is necessary to make provision for moving this reservoir away from its seat 8 to open up communication between the two reservoirs. The ex-V pedient preferably employed for accomplishing this result is a sliding operating-stem 9, suitably connected at its inner end, as at 10, with the closed end of the tubular reservoir 7 and having the outer end portion thereof sliding through an opening in a closure-head 1l at the outer end of the holder 1. In the construction shown in Fig. 2 the extreme outer end of theholder1,beyond the head 11 thereof, is provided with an interiorly-threaded socket 12, adapted to receive therein a suitable cork or liber packing 13 and also engaged by the exteriorly-threaded portion 141E of the fingerknob 15. This finger-knob 15is shown in Fig. 2 as having a slidable connection 16 with the outer extremity of the operating-stem 9 for the combined reservoir and cut-oft 7, said sliding connection preferably consisting of a pin and slot which permit of the relative sliding movement of the parts and also of a rotary movementin unison. The said fingerknob 15 is provided with a central bore 17 to receive the outer extremity of the stem 9 and also accommodates therein a tensionspring 18, which relieves the tension or strain on the stem 9, so as to permit the knob 15 and also the combined reservoir and cut-oit 7 to settle tightly in their seats. By unscrewin g the finger-knob 15 outl of the interiorly-threaded socket 12 the stem 9 will be drawn outward through the outer closed end ot the holder l, thereby carrying the combined service-reservoir and cut-off 7 out of the sea-t 8 and into the straight bore of the holder at .the opposite side of the intermediate enlargement or swelled portion 2, as plainly shown in Fig. 2 of the drawings. In this latter position the ink is entirely displaced from the straight bore of the penholder at the outer end thereof and is compelled to run through into the uncovered open end of the movable service-reservoir 7. When the movable service-reservoir has thus been reiilled, the stem 9 is moved inwardly to carry the open end of said service-reservoir into the seat 8, after which the threaded portion of the finger-knob is screwed into the socket 12, thereby providing for securing the service-reservoir in its closed position, and thus effectually cutting off communication between the two reservoirs until the servicereservoir is again depleted.

The usual cap 19 may be associated with the construct-ion just described, said cap being reversible, like the ordinary cap, so as to be fitted over the pen-bearing section when the pen is not in use and upon the outer end of the penholder when the pen is in use, as plainly shown in Fig. 2 of the drawings. The tubular combined service-reservoir and cutoff 7 need not necessarily, though preferably so, be combined with a holder having an intermediate annular enlargement or swelled portion, as it is-only necessary in all cases' that the combined reservoir and cut-oif 7- be of less width or diameter than the main por- 7o tion of the holder, so that when it is drawn away from its seat the open end thereof will be uncovered, so as to receive a fresh supply of ink from the main supply-reservoir 3 of the holder. It will therefore be obvious that such a modification as :illustrated in Fig. 3

of the drawings may be resorted to. In this modification the holder 1 is shown as being straight throughout, so as to have the appearance of an ordinary fountain-penholder, and 8o provided at one end with a detachable nozzle 20, which necessarily constitutes a part of the holder and is counterbored to form the interior annular seat S for the said combined reservoir and cut-off, this seat cooperating with the said reservoir and cut-oif in the manner already explained in connection with the construction shown in Fig. 2. The modification illustrated in Fig. 3 also shows that the invention may be carried out in connec- 9o tion with a plain sliding joint for the stem at the outer closed end of the holder or barrel, said joint simply consisting of the closinghead 11, provided with a central guide-opening 21 to slidably receive the stem 9, the lat- 95 ter being provided at its outer extremity with a plain finger-knob 15 to facilitate the adjustment of the interior tubular combinedv reservoir and cut-off 7.

In one form of the invention the open end 'roo of the combined reservoir and cut-ott 7 when closed onto the interior seat 8 is in complete communication with the adJoinlng ink-duct leading to the pen Without any means for controlling the delivery ofink from the said reservoir 7. It is, however, within the purview of the invention to provide a suitable valve arrangement for controlling the discharge of ink from the service-reservoir 7 into the adjoining ink-duct at the lower end of the penno holder. While different expedient-s may be resorted to for accomplishing this end, a simple construction for said purpose is shown in Figs. 4, 5, and 6, which construction involves providing the penholder within the plane of the interior seat 8 with an inwardly-projecting iiat valve-shoulder 22, extending partly across the ink duct or passage and adapted to have seated directly thereagainst one end of the supplemental service-reservoir 7. To 12o complete the valve arrangement, the supplemental service-reservoir 7 is provided at the open end thereof with a head 23, partly closing the said open end of the reservoir and cooperating with the Iiat valve-shoulder 22 when 12 5 the reservoir is turned to provide for varying the size of the-opening through which the ink may pass from the reservoir 7 into the inkduct. By turning the reservoir 7 sufficiently to bring the opening at the lower end thereof 13o directly opposite the valveshoulder 22, so as to be covered thereby, the delivery of ink to the ink-duct may be completely cut oft'. It will thus be seen that the valve arrangement als described makes provision for placing the delivery of ink to the ink-duct e'ntirelyfunder the control of the operator, thereby affording protection against the ink. leaking from the case when it isldesired to carry the same in anyy position whatever.

Any form of joint or closure for the outer closed end of theholder or barrel may be associated with the construction shownin Fig.

4, preferably the form of joint or closure` shown inFig. 2 of the drawings.

Other modifications may be`resorted to andi will be readily apparent to thoseskilled inl the art; but those set forth herein plainly illustrate the essential feature of the invention, and it will be understood that various means whereby its interior is adapted to corn-y municate with the ink-duct, and also with the main reservoir, said tube receiving its independent supply of inkfrom the said main reservoir, substantially as set forth.

2. In a fountain-pen, thepenholder provided withiamain supply-reservoir, a supplemental lservice-reservoir inl the form of a` dependent of the ink-duct leading to the pen, and means for 'opening and closing communication betweenthe said two reservoirs, substantially as described. In a fountain-pen, the penholder provrueu witn a mam suppiy-reservolr, a su pple-` mental service-reservoir in the form, of a tube having an open and a closed end, said'open cate with the main supply-reservoir and alsoj with the-ink-duct, and means for opening and closing the communication between the said Vtwo reservoirs, substantially as described.- Y `4'. In afountain-pen, the penholder pro'- vided with a main supply-reservoir, a supple'- mental service-reservoir in the form of a tube arranged wholly within the main reservoir and movable therein,said tube having an open end adapted to'communicate with the main reservoir and also with the ink-duct, and

means for opening and closing communication between the two reservoirs, substantially as described.

5. In a fountain-pen, the penholder provided with a-main supply-reservoir and an in'V terior seat, andatubularsupplemental-combined, service-reservoir and cut-off located wholly within'the holder-and coperatin g with said seat, substantially as described.

6. Inv a fountain-pen, the penholder provided with a main supply-reservoir, and an in- ;terior seat, and a combined supplemental serv- `ice-reservoir and kcut-off movablefwithin the lmain' supply-reservoir and arranged wholly therein, said combined service-reservoir and cut-off being in the form of a tube open at one .end and adapted to have the open end thereof ymoved onto and away from said seat,` substanitially as set forth. v

7. In 'a' fountain-pen, the penholder prol:vided with an interior main supply-reservoir, .and with an interior seat at the ilower exf tremity ofsaid main supply-reservoir, a tubu- `lar supplemental service-reservoir movable within the main reservoir, and open at one end :for communication with the main reservoir l.and also with vthe ink-duct, said service-reservoir being located wholly within the penholder, andmeans for carryingthe open end of saidl tubular supplemental reservoir onto and away from the interior seat, substantially Las set forth.

8. In a fountain-pen, the holder provided 'with an interior main supply-reservoir, and at .thelower extremity of said reservoir with an annular seat', said holder being further pro- Ividedwith an intermediate annular enlarge- '.ment or swelled portion, and a tubular supplemental service-reservoir open at one end and longitudinally movable'within the holder, said su pplementalservice reservoir being adapted to have the open end thereof work onto and awayfrom the said seat,and also movable into the straight bore of the holder, at the .side ofthe enlargementor swelled portion op- I posite-the seat, substantially as set forth. tube arranged wholly inside of the holder in# 9. In a fountain-pen, the penholder proservoir with a valve-shoulder extending partly across the ink-duct, and a separate rotatable and longitudinally-movable tubular supplemental servlce reservoir provided at one end with a partial closure'working on the said valve-shoulder, substantially as set forth. end of the tube being adapted to communi-A i v 10. In a fountain-pen, the penholder providedwithan interior main supply-reservoir, and at theclosedv end thereof with a socket to receive packing, a cut-off for closing the outlet of ink from the main supply-reservoir,

said cut-offhaving a stem sliding through the .closed outer end of the holder, a finger-knob having a slidable connection with the outer my own Ihave hereto affixed my signature in the presence of two witnesses.

PAUL VE. W'IRT.l

Witnesses:

GEO. S. ROBBINS, C; C. PEACooK.

IIS