US2433144A - Combined inkwell and penholder - Google Patents

Description

Fl G. 4

w. C. NEIN COMBINED INKWELL AND PENHOLDER Filed sept. 25, 1942 FIG. l

` Dec. 23, 1947.

INVENTOR.

BY wllLLlAM @NEIN MMzQmUud/JHDUMMM v framers Patented Dec. 23, 1947 UNITED STATES PATENT oEFl-CE COMBINED INKWELL AND PENHOLDER William C. Nein, New York, N. Y. Application September 25, 1942, Serial N o. 459,640

6 Claims.

This invention relates to ink-Wells and more particularly to improved closed combined inkwells and penholders The main object of this invention is to provide an improved ink-Well and penholder which is a practical device.

Another object of the invention is to provide means operated by the penholder to feed ink from the ink reservoir to the pen.

Referring to the drawings:

Fig. 1 is a sectional elevation of the invention showing the arrangement of the various parts including a suitable supporting base.

Fig. 2 is a top plan View of the flexible diaphragm, part 7, of Fig. 1.

Fig. 3 is a sectional elevation of a modification of the invention as shown in Fig. 1.

Fig. 4 shows a top plan View of a modied form of part 7 as shown in Fig. 3.

Fig. 5 is an elevational View partly in section showing a modified form of the ink-feeding member.

Referring newv to the drawings and particularly to Fig. 1, I` is an openmouthed reservoir, hollow and substantially spherical in form. The open mouth of the reservoir I is provided with an eX- ternally threaded portion 3 3 to receive a cap or closure 5 which is preferably formed of molded plastic with an inset threaded metal collar 3. Within the reservoir l is fastened a weight 2 which acts as a counterbalance for the various parts as shown. The metal inset 3 is formed with an inwardly projecting flange which oVerlies the top edge of the threaded collar 3 of the ink reservoir I.' Clamped between this flange and the edge of the collar 3 is the marginal iiange of a flexible rubber diaphragm 'I A ring or washer I6 of a width to project inwardly beyond the edge of the llange of the inset 3 is inserted between the margin of the diaphragm and the ange of the insert for a purpose which will be later described. The diaphragm "I, Figs. 1 and 3, is made preferably of a form as shown, and is provided with an opening I8 through which is forced, as an airtight t, the shank 9 of the pen holding member Iii. The shank 9 is provided with a groove I9 to x the position of diaphragm 1. rlhe shank 9 of the penholding member IIJ is preferably circular in form and is provided with a multiple diameter bore I2 which opens into a well I4 at its z I Y upper end and in which well I4 and part of the bore I 2 is normally mounted the pen 23 of a pen'- holder II. The penholder Il rests in the hole-I0' `of member I0. The penholding member IU is provided with a shoulder I5 which cooperates with the inwardly projecting edge of washer I6 to limit the downward movement of the pen-holding member III. By substituting washers of various thickness the extent of movement of the penholding member may be varied. The Whole as; sembly on reservoir I is mounted in a supporting base I3, which base has a socket 20 having aportion shaped to t the contour of the reservoir I. In this portion a friction lining I1 is provided to control the movement of reservoir I as desired.

Beneath the curved' portion of the socket 2Il which serves as a seat for the spherical reservoir the socket 20 is in the form of a cylindrical well ZIJ. Member 2| is a knob fastened to reservoir I as shown by any suitable means such as a screw 22 or it can be madea part of `I and acts to limit the movement of the reservoir I with respectto the base I3 which is accomplished by the cylindrical wall 20' of the base. The upward movement of member Il) is limited by a ledge 5 of member 5 and the pressure against 5 is supplied by member 'I which is slightly depressed when member 5 is in position.

In Fig. 3 of the drawing I have illustrated a somewhat modied form of diaphragm wherein the interior of the reservoir is vented without providing a vent hole inthe diaphragm. As here shown the diaphragm 'I is formed around its central opening with an upwardly turned conical seat I 8 which nts loosely against a conical shaped portion 9 at the juncture of the well I4 and tubular extension 9 of the pen-holding member. A spring 25 interposed between thelower end of the tubular .member 9 and the bottom of the reservoir normally maintains the pen-holding member in its upper position to thus insure a vent to atmosphere which is closed when member IB is pushed downward against the spring 25. The inwardly turned iiange 5 of the cover 5 serves as a stop to limit the upward movement of the pen-holding member under the pressure of the spring 25. In Fig. 3 I have also shown a slightly modied form of pen-receiving cover for the ink-receiving well I4. As here shown the closure consists of a sheet metal cap having a central holey through which the pen is inserted into the lnk-receiving well. With this form of closure pen holders of any size may be used.

In Fig. 5 I have illustrated a modified form o-f feed plunger 9 to insure getting substantially all of the ink out of the reservoir when the latter is in inclined position, As here shown the plunger 9 is shortened and is provided at its end with an extension of reduced diameter over which is tightly fitted the end of a flexible tube 29 of a length to reach to the bottom of the reservoir when the latter is tilted to the inclined position permitted by the stop 2l. The lower end of the flexible tube 29 is provided with a weight 30 which serves to hold the lower 'end of the tube at the lowermost point in the reservoir.

As can be seen from the several figures the function of shoulders l5 and I6, which can be variables, is to limit the movement of member I0. The function of the vent 4 to atmosphere in the member 1 is to assure a stable air pressure within the reservoir I above the ink. As can be readily seen the area of the vent 4 is very small compared to the area of the member 'l which is depressed when the penholder Il ls pushed downwards in operation, so while some air escapes thru the vent 4 the reduction in pressure within the reservoir is not suflicient to affect the practical operation of the device. In the case of Fig. 3 as can be seen there is no escape of air in operation although the effect of a small portion of the stroke of member I0 is lost. The vmultiple diameter bore l2 of member 9 prevents ink from squirting up against the pen 23 by relieving the pressure as the ink rises in bore l2 when the device is operated. This is a very important practical feature as can be readily seen. The location of the vent 4 in member 1 is preferably as shown in Fig. l. When the member l0 is depressed causing diaphragm 1 to flex, the flexing takes place in a circular line through the vent 4 closing it as the downward movement increases thereby assisting in increasing the pressure in the reservoir I above the ink. The vent 4 permits any changes which may take place in the air pressure within the reservoir above the ink to equalize itself with the atmosphere.

What I claim is:

1. An improved ink well of the reservoir type comprising, a reservoir, an ink pumping element of elastic material extending into the reservoir and having a flexible diaphragm integral therewith at its inner end, said diaphragm provided with a perforation therethrough, a hollow pen holding member mounted within the pumping element and having its inner end extending through said perforation, said pen holding member reciprocable axially to flex the diaphragm and pump ink from the reservoir into the pen holding member, and a valve in the diaphragm open when the diaphragm is at rest to prevent pressure within the reservoir, and closing when the diaphragm is flexed to permit creation of pressure within the reservoir to pump ink into the pen holding member.

2. An improved ink well of the reservoir type comprising, a reservoir for ink or other like fluid, said reservoir provided with an opening in one side thereof, a hollow plunger reciprocably mounted in said opening and having its inner end in cooperative relation to the ink within the reservoir, a resilient bellows capable of buckling under pressure associated with said hollow plunger, a valve passage in said resilient bellows at the buckling point, said passage being normally open,

and closed when the bellows is subjected to pressure from the hollow plunger.

3. The combination with an open top liquid reservoir, a closure for the open top secured to the reservoir and provided with a cylindrical bore, a tubular element having an enlarged cylindrical head portion mounted for reciprocatory movement in the bore and provided with a tubular extension depending from the head into the reservoir, a resilient diaphragm normally of dome shape form secured at its perimeter between the reservoir and the closure and through the crown of which diaphragm the extension projects, said crown portion being distortable by the inward movement of the tubular element from its most dome-like form towards a less domed condition, said diaphragm provided with normally open means for venting the interior of the reservoir both when the diaphragm is in its fully distended dome form and also during the initial part 0f said inward distorting movement and said diaphragm functioning by reason of its distortability to provide means operably controlled by the movement of the diaphragm as it progresses beyond said initial movement to close said venting means and thus automatically intercept fluid communication between the interior of the reservoir and the outside air whereby the nal part of the depressing step acts to create pressure in the reservoir to force liquid in the reservoir up into said tubular element.

4. An ink-well including a base provided in its upper surface with an upwardly facing socket, the uppor portion of the socket being a segment of a sphere and the lower portion being substantially cylindrical, a receptacle supported by the base, having an opening in its upper side and having its under surface conforming to said upper portion and mounted thereon for universal articulation and said under surface being provided with a stop depending therefrom into said lower portion of the socket and adapted in its engagement with the wall deiining said lower portion to limit the tilting of the receptacle from its normal upright position. f

5. An ink-well of the reservoir type comprising a reservoir mounted for movement about a self-contained axis, an ink pumping element extending into the reservoir and including a flexible diaphragm provided with a perforation therethrough, a hollow pen holding member mounted within the pumping element and having a portion thereof extending through said perforation, said pen holding member reciprocable axially to ex the diaphragm and to pump ink from the reservoir into the pen holding member, said diaphragm provided with a normally `open valve for venting the reservoir, said valve automatically operable on the depression of the holding member to close the valve, the extreme lower end of said extending portion having a flexible tube providing an inlet to the pen holding member from the reservoir and tending by reason of its flexibility to lower the inlet towards the bottom of the reservoir in all positions of the same.

6- An ink-well including an ink reservoir having an opening, a closure member for the opening, a pumping element having its upper portion guided for reciprocatory movement in the closure, a flexible diaphragm through which said pumping element extends, the lower intake end of said pumping element normally extending into the ink in the reservoir and constituting a exble tube, the lower end of which is Number Weighted. 523,010 WILLIAM C. NEIN. 566,346 725,165 REFERENCES CITED 5 1,200,611 The following references are of record in the lle of thls patent. 117451799 UNITED STATES PATENTS lo ggg Number Name V Date 2000501 49,093 Darling Aug. 1, 1865 21071,276 450,497 ROhI'kaSE Apr. 14, 1391 2,078,862

6 Name Date Russel July 17, 1894 Sigeler Aug. 25, 1896 Snell et al. Apr. 14, 1903 Heller Oct. 10, 1916 James Mar, 13, 1917 Heilbrun Mar. 5, 1929 Johnson Feb. 4, 1930 Henle May 24, 1932 Meunier July 27, 1933 Wade May 7, 1935 Barbiers Feb. 16, 1937 Llewellyn Apr. 27, 1937

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