US2521657A - Fountain pen - Google Patents

Description

V. H. SEVERY FOUNTAIN PEN Sept. 5, 1950 3 Sheets-Sheet l Filed July 7, 1944 gmc/whom .N mw, k\\ EN IN uw I ml.:

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V. H. SEVERY FOUNTAIN PEN Sept. 5, 1950 Filed July 7, 1944 3 Sheets-Sheet 2 EN Q\ @liar/ ,fel/e132 SWL 5, 1950 v. H. sEvERY 2,521,657

FOUNTAIN PEN Filed July 7, 1944 `s sheets-sheet s Siwa/wm Patented Sept. 5, 1950 UNITED STAT FOUNTAIN PEN Victor H. Severy, Atlanta, Ga., assignor to Scripto 4 Inc., a corporation of Georgia Application July 7, 1944, Serial N o. 543,785

5 Claims.

The invention relates to fountain pens and has as an object the provision of a pen having the parts designed to be molded from a synthetic plastic.

Itis a further obje-ct of the invention to provide a pen having a nib that may be adjusted relative 'to the feed bar and barrel whereby to modify its effective resiliency. f

Further objects of the invention are to improve the feed of the ink to 4the nib by independently To index the feed eer in the hood' the, shoulder 22 is shown as formed with a notch 2B and the venting air to the ink reservoir; to provide capillary ink storage spaces at the surface of the feed bar that may be molded but yet retain their capillary character; to improve the ink and air flow during the filling operation; to provide a filling structure that permits of large ink capacity in the barrel; and to improve the cap retention on the barrel.

Further objects will appear from the following descriptionwhen read in connection with the accompanying drawings showing illustrative embodiments of the invention and' wherein:

Figure 1 is a side elevation of the pen with the cap in writing position.

Figure 2 is a central longitudinal section to a much enlarged scale broken away to reduce its length.

Figure 3 is a detail central vertical section upon a still larger scale showing a'difierent form of ink container.

Figure 4 is a detail longitudinal section showing the feed bar with a portion of the hood member of the pen. l v

Figure 5 is a plan view of the feed bar.`

Figure 6 is a plan View partly broken away of a form of nib.

Figures '7, 8, 9, 10 and 11 are transverse sections upon a still further enlarged scale taken on the corresponding section lines of Figure 4, and

Figure 112 is a perspective view of a Spring member to form a portion of the cap of the pen.

As shown, the pen comprises a hood member I5 having a feed bar i6 iixedly mounted therein retained by a union I1, and a reservoir member I8, terminating in a tip I9 retained and removable at the screw threaded joint 2B for access to the pen filling device ,2l or 2l.

The feed bar is shown as formed with oppositely facing shoulders 22, 23. the pen is assembled is pressed against an internal shoulder 2d by pressure developed by the screw threaded connection 25 between the union and the hood causing internal shoulder 2B of the union to press against the shoulder 23 of the feed bar.

IThe shoulder 22, when shoulder 24 with a complemental lug 21 residing in the notch when the pen is assembled.

The length of the skirt 28 of the union His such that it will not seat against theinternal shoulder 29 before full pressure'is developed'bee tween shoulders 23, 26. It follows that the point 3e of the nib will be accurately indexed with the pointl ofi the nib carrying portion 32 .of the feed bar and with the nib itself forreasons described below. Becausethe hood cannot be revolved on the feed bar, and because the union is forcibly screwed into the hood developing holding friction on the threads between the union and hood plus friction at the shoulders 23,v 26, any attempt to unscrew the threads y25, after the pen is assembled, by causing relative rotation between the hood and the reservoir I8, will cause removal "of the reservoir, leaving the assembly of the hood,

feed bar, and union unaffected. I l

Advantages of this structure are:l that once the pen is assembled the relation of the feed bar to the hood is fixed; the size of certain capillarly passages, to be described, is fixed; the nib which is carried by the feed bar has a firm support within the surrounding structure; and assembly is facilitated. f

The reservoir member lI8 has screw threaded engagement with the union l1, a ring 33 being interposed in the joint, the ring 'having anl outwardly convex surface to coact with the cap.V

In the form of Figure 2, the reservoir I8 directly receives the ink and for filling purposes a bulb 2l is shown as seated in` an annular recess 34 formed in the extension 35 of the reservoir which extension provides with the screw threads V2l! for retention of the cap I9.

In the form of Figure 3 a rubber'sack 36 .'is shown as engaged upon an extension 31 of the feed bar which sack is integral with the filling bulb 2l' extending into the tip I9 to' be exposed for manipulation when the tip is removed for the purpose. As shown, the sack 36 is formed with an enlarged portion 38 providing a shoulder 3b!! to overlie an internal shoulder 4l] formed in the reservoir portion I8. By provision of these coacting shoulders 39, 4U, it is impossible for mis-v use of the bulb 2i to result in displacing the sack 36. f

The feed bar as showncomprises a nib receiving portion 4i, an extension 42 to fit within the union vl '1, and a centrally enlarged portion formed with a plurality of grooves 43 to serve as ink'stor'- age means from which ink may be given 'down when excess demand of writing conditions requires.

As shown, the upper portion of the bar is formed with an ink channel 44k cutting across the grooves 43 and extending from communication with the interior of the reservoir to a point as 45 closely adjacent the point of the nib. At 46 the channel 44 dips to pass below the indexing lug 21 which resides in the notchZS as already described. The channel 44 is shown as curved downwardly at 4'! and widened at its sides as shown at 48, 49 to permit air entering at the sides of and over the nib to pass to the well in communication with, the bore 52 of the feed bar. The said bore is shown as enlarged to receive the end of a vent bar'53 which extends to the upper portion of the ink reservoir.

Ample air admission space is shown at 54 below the end of the said bar. During the lling opervation ink may be supplied to the grooves 43 through a lower channel 55 which cuts across the grooves 43 at the lower side of the feed bar and which terminates at 5l, as well as over the nib, throughgopening 'i0 of the nib and into channel A44.

An important feature of the invention is the proviison of a pen all parts of which may be molded from a synthetic resin.

The grooves 43 in order to be operative must be of capillary size. Capillarity is secured in a form of feed bar-which may be molded in accordance with the invention, by making the grooves 43 wide enough to be molded but shallow lenough to have capillary action whenl in coaction with the surrounding hood structure. To this end the interior of the hood is shown as being of a 'diameter to provide aslight spacing from the l edges of the ribs 58 between the grooves 43 where- `as the flanges 59, 69 of the feed bar are of slightly Vgreater diameter than the ribs 58 so as to iit closely within the hood at one end and within the union at the other end of the feed bar.

The internal diameter of the union I1 where it overlies some of the ribs 58 is the same as the internal diameter of the hood member itself.

An important feature of the invention is a nib which-may be adjusted for different writing qualities. To this end the portion 4l of the feed bar -is Shown as substantially triangular in cross section-with one side of the triangle formed upon a convex surface. The nib l5 shown in plan. view in Figure 6 has a convex portion 32 to seat upon ythe convex surface ofthe feed bar and wings 63, -'64, each. extending at an angle to the portion 62 to overlap the remaining two sides of the trian- .515

gular portion. of the feed bar. The feed bar is `shown as formed with depressions G5 and the nib with a pair of beads 6G to enter the depreslsions .65. Two pairs of depressions are shown, :one to receive the beads Gi when thenib is in its most retracted position and one when the nib is pulledfout to the dotted `line position of Figure 4. :Itj is obvious that other positions of adjustment .'rnight be'provided.

To provide desirable'resiliency of the wings v53, 64 in their relation with the main portion of the ,nib -portions at the angle of junction therebetween, the angles are cut away at 51, 68. To as- -sist thewings E53, 54 in supporting the nib against the pressure of the nib upon a writing surface .and to lprovide a capillary inkpassage above the -niba yplurality of ribs 69 are provided preferably `iformed-on the inner surface of the hood, as seen .inFigures 8 and 9. In the form shown, two of these ribs'are provided.

The nib is shown as formed with the usual peroration 'lil and the slit 'H leading to the point of the nib is slightly widened adjacent the perforationV 10.

The cap shown for purpose of illustration comprises a metallic shell 'l2 turned into a ange T3 about the open end of an internal shell 'I4 as of plastic material with a clasp 15 interposed between the ange 'Z3 and the head of a screw threaded plug engaging internal screw threads in the end of the shell. A down turned lug struck from the eye of the clasp enters a recess in the ange of the shell, as shown in Figure 2, to prevent relative movement. To retain the cap upon the pen when the pen is not in use, an internal sleeve member 1'( is seated in the shell 'I2 and revolution of the sleeve with respect to the cap is prevented by means of portions 'I8 seating in recesses 19, in the sleeve. The material I4 is xed immovably in the shell as by cementing the same therein and the sleeve Tl is retained in the vshell by the down turned margin thereof.

As shown the sleeve 'l1 is cut away at portions Si to provide a resiliency of the remaining portions 32 which portions are inwardly dellected and formed with an annular recess 83 to snap over the ring 33 in the pen body. The interior of the plastic portion 'I4 of the pen is dimensioned to have a sealing seat at 84 closely adjacent the front end of the hood member of the pen and the angle between the coacting surfaces is such as t0 not slip when fixed home.

To remove the cap from the pen a turning motionis utilized to break the seal, combined with a longitudinal pull to remove the spring members 32 from the rib 33.

In operation the ow of ink from the reservoir toward the nib through the passage 44 is independent of the access of air to the reservoir through the bore 52 and the vent tube 53. At times when the flow in passage 44 is in excess of writing requirements the excess ink will be received by the grooves 43 with escape of air from the grooves by way of passage 5S. When writing demands are excessive the reserve supply from :the grooves 43 will supplement that owing from the reservoir and air in channel 56 will lessen the surface tension of the groove-held supply to release it. The yspace betweenA the ridges 58 and the inner surface of the hood will assist in the 'ow of ink from the grooves to the nib.

When the ink owing to the nib reaches the spaces 48, 49 it will fall into and ll the cross bore 5| and overflow therefrom to the nib. Vent air entering through the channel 44 will bubble through the ink in the cross bore, into the vent 52 thereby valving the supply of ink from the reservoir. The channel 44 being of capillary size, and the bore 52 and pipe 53 being much larger, insures that the air flow and the ink ow will be as described.

The inl: in the grooves 43 held by capillary action must rise at the sides of the bar to reach the channel 64. Therefore while the supply of ink from the reservoir aided by the force of gravitaizion, is ample, ink will not be drawn from grooves Yspreading of the point using more ink. In this position of the nib its rear end will be spaced from the shoulder 22 of the feed bar permitting .ink from passage 44 to gain access to the upper surface of the nib to flow in the space provided by ribs 69, giving an augmented supply of ink for the heavier line then produced.

Minor changes may be made in the physical embodiments of the invention within the scope of the appended claims without departing from the spirit of the invention.

I claim:

1. A writing tip assembly for pens comprising, in combination: a hood member tapering to a writing tip and formed with a nib surrounding bore adjacent said tip, a feed bar housing bore of increased diameter forming an internal shoulder, and a bore portion of further increased diameter screw threaded at its opening; an externally screw threaded union member formed with a feed-bar-end receiving bore, a second bore portion of substantially the same diameter as that of the intermediate bore of the hood, forming' an internal shoulder with the first named bore; and a feed bar having one end mounted in said union member and its remaining end mounted in and in contact with said hood member at said internal shoulder thereof; said feed bar formed with a plurality cf circumferential recesses, the crests of ribs separating said recesses being spaced from the inner surfaces of the intermediate bore of the hood and of the like bore of said union by a capillary space; the internal shoulder in the hood and the coacting end of the feed bar formed with coacting lug and recess rotationpreventing means; whereby pressure exerted by said union upon the feed bar and friction of said screw threads holds the parts in assembly when a connected reservoir barrel is removed.

2. A fountain pen comprising, in combination: a hollow internally cylindrical hood member of reduced diameter adjacent a nib enclosing end portion providing a rearwardly facing internal shoulder; a feed bar mounted in said hood member formed with portions of differing diameters residing in the corresponding cylindrical portions of the hood member, with a forwardly facn ing shoulder seating upon the shoulder of the hood member and with the smaller portion of the feed bar of substantially triangular cross-section with the base facing upwardly and with at least the base outwardly convex; a correspondingly formed nib seated on the smaller portion of the feed bar; capillary ink-storage recesses formed in the surface of the larger portion of the feed bar; said feed bar formed with channel means to conduct ink to the nib; and means to hold said shoulders in contact.

3. A fountain pen comprising, in combination: a hood member having a hollow writing end portion; a feed bar mounted in said hood member, formed with a nib carrying portion of substann tially triangular cross-section with a convex upwardly facing base and freely projecting into said hollow portion; a nib formed with a central portion conforming to said convex portion and with a pair of wings resiliently engaging the remaining sides of the feed bar; said nib slidably carried by said feed bar for adjustment thereon; and means to hold said nib in adjusted position.

4. The structure of claim 3 in which the means holding the nib in adjusted position each comprise an eminence carried by one of the contacting surfaces engaging in a depression carried by the remaining surface.

5. The structure of claim 3 wherein one of the opposed surfaces of the nib and hood is formed with at least one longitudinal rib to maintain a space between the nib and the interior of the hood.

VICTOR I-I. SEVERY.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date D. 137,660 Severy Apr. 11, 1944 1,611,171 Easton Dec. 21, 1926 1,689,142 Kohler Oct. 23, 1928 1,931,279 Wuestman Oct. 17, 1933 1,980,159 Back Nov. 6, 1934 2,056,055 Sears Sept. 29, 1936 2,089,449 Sypher Aug. 10,1937 2,125,957 Sager Aug. 9, 1938 2,149,557 Snodgrass Mar. 7, 1939 2,223,541 Baker Dec. 3, 1940 2,234,812 Snodgrass Mar. 11, 1941 2,241,865 Martin May 13, 1941 2,282,840 Wing May 12, 1942 2,283,333 Martin May 19, 1942 2,303,373 Martin Dec. 1, 1942 2,305,287 Weigel Dec. 15, 1942 2,404,063 Healy July 16, 1946 2,417,861

Dahlberg Mar. 25, 1947

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