US2575870A - Means for connecting collapsible tubes to a pump device for discharging the contents thereof - Google Patents

Description

GATES G. F. MEANS FOR CONNECTING COLLAPSIBLE TUBES TO A PUM DEVICE FOR DISCHARGING THE. CONTENTS THEREOF Filed July 9, 1948 Nov. 20, 1951 Patented Nov. 20, 1951 es PAT ENI e:

2;575370; i t MEANSsFOReQONNECTING GOLLAPSIBLE; TUBES; TO; A11. PUMP DEVICE FOR,DIS.- CHARGING THE CO TENTSJTHERE E: George Frederick Gates. Eon'don; England; ass signor to Gestetnei -Limited, London, England:

Application Jul 's, 194s, SeriaLNo. 37,836;

V Iii-GreatBrit-ain J umo; i947 ortviscous inks to theinking cylinders of dnplicating vmachinesrofethe kind'in which such cylinders are ifnpermeable although, in some cases with such machinesthere has been associated means whereby such ink is deliveredfrom a relatlvely rigid container furnished with a base adaptedto; function as a piston in order that by the displacementof the pistonthe content'sof the container may be deliveredjto the inking cylinders of such'machiriesz' The object of the-presentinvention isbroadly stated to provide "improved means for dispensing thezcontents of collapsable tubes and to provide, irrparticular; means -forfthe purpose'in question adaptedf'to be incorporated or incorporated in stencil" duplicating machines; of" the kind above I referred toi particular" object of this" invention is the provision of *improved -means forestahlishing an airtight "connection between the nozzle and a -co1= lapsable tubeand a: pomp; by-means or which 2- the contents of the: tube may =bedrawn 1 into the chamber of pump and expelled therefrom a peripheral knife edge; and means adapted to bring the tube nozzle and-'- said knife edge into abutment and drive-saidkn-i-fe edge into the material ofthe nozzle at its-outer extremity.

Forms-tance in accordance withthe' invention below-the usual screw-threaded portion of" the nozzlewof the=collapsable -tube *there'may be rovided a recess-orrecesses adapted- -to be engaged byan; element forming part of-"such means-associated I with a leverorequivalent mechanism arranged to impartmotionto the element and to *thenozzle-in a direction parallel with its axis in i order to hring-themuter end of the nozzle against the peripheral sharpouter end of the-hol- 1owelement communicating with the pump 2 Claims." (Cl. 222-80) levers or like mechanismfor imparting; motion to it. Conveniently; the mechanism inquestion is such as to provide a toggleor wedging actioni Thus in accordance with the invention the means" may comprise alever; one arm of which is bifurcatedand-*having-in each of the elementsof the bifurcated -arm aslot i engaginga t pin-ion the side of asleeve slidable a-xiallyonthe =hollovv.

or tubularelement furnished with a peripheral sharp edgeandhavi-ng an extension open at one side furnished" with flanges adapted to. enable the nozzle of the collapsable tube to beslid trans versely into position so that-the recesses pro- 7 vided on it are engaged by the-flanges, so that by motion imparted to the sleeve bythe leverthe faceo-f thenczzle will be brought firmly intocone tact with the hollow or tubular' elementprovided with asharp edge tosecure-a liquid-tightjoint and in the extension of thesleevethere maybeprovided spring pressed inemb'ers; for instance pins; adapted-to engage a-frusto-conica=lportion of the nozzle of thenollapsable tubelocated in ad vance of the recess to facilitate-- appropriately positioning the nozzle with respect to theme"- ripheral sharp edge of thehollow or tubular ela ment;

The pump may be- 'a pisto'npum'p andthe a i'tis or the chamber of the pumpinwhichthepiston operates isconveniently arranged to extend at right anglesto the directioh'of the nozzle;

Any appropriate means may be provided to err-- able the piston of, the pnrnp to =be'reciprocated or actuated:

For-instance there may: beprov-ideda lever q'rsysteinof levers associated with aspring adapted to constrain the piston towards-one endwf'its stroke, that is to say toefi'ect delivery'of thecontents of the pumpv ch-amber while permittingthe piston to be moved in the reverse direction-in-bp position'to the spring.

chamber associatedwith a 1ever-- r system of 55 As applied to the inking mechanism of a duplieating machine theoutlet or delivery of 'the'pump may be connected to an ink delivery tub'eadapte'd to extendina direction parallel with theaxes of the 1 inking cylinders "of the duplicating machine and'reIati-veIy adjacent to 'oneofthink distributing rollers associated therewithand having a plurality of-port's spaced apartin thedirectionof its length; v

Conveniently, where the device is designed'tp be associated with a machinefifor instance adriplicating machine, of the, known type furnished with a plurality or ink "impermeable inking cyl inders-engaged in side members-forming part Of the machine frame, the device may be arranged to be detachably engaged with the frame and in this case a hole may be provided in one of the side members through which the ink delivery tube will pass and a hole in the opposite side of the frame inwhich-a spigot provided on the ink deliverytube may be detachably engaged. To facilitate securin the device in its appropriate position with respect to the frame a spring pressed catch connected with alever may be associated with the device at a position adjacent to theqpump chamber, thecatch being formed, for instance, on the end of the lever also associated with the chamber of the pump or its housing and furnished conveniently with a hooked end so that in pulling upon the end of the lever it will be moved about its pivot to disengage the catch ifrom a recess provided in the side'member of the frame.

If desired the lever or like mechanism by which the pump is operated may be arranged in driving connection with the means imparting motion to the inking cylinders of the duplicating machine.

Generally, however, it is desirable to arrange that'the pump may be operated independently of such driving means and in accordance with the judgment of the operator of the machine. ,.,Afpnstruction in accordance with the invention is illustrated by way of example in the accompanying drawings which illustrate the application of connecting means according to the invention for the purpose of delivering pasty or viscous inks to the chamber of a suction pump from a collapsible tube.

' In the drawings: Figure 1 is a view showing certain parts in the position which they will assume in entering the neckiof the collapsable tube; V Figure 2 shows the parts in the position in whic they engage the tube which has a neck in the form illustrated in Figure 3 with its screw cap removed;

Figure 4 is a view in section on a plane indicatedgby the line IV-IV of Figure 2 viewed in the direction of the arrows;

Figure 5 is a view in section on a plane indi- .cated by the line VV; i

' Figure 6 is a perspective view showing the combination of a pump with the collapsible tube and securing means of Figures 1-5.

,'The construction of the means is clearly seen from Figures 1, 2, 4 and 5, the form of the neckioi' the tube being shown in Figure 3. i

In-this figure it will be seen that there is provided on a neck or nozzle portion of the tube .3 a screw thread 5 adapted to be engaged by a cap-e6, the screw-threaded portion being immediately below the nozzle portion 1 provided with a discharge or delivery aperture surrounded by a wall -of such thickness to provide a seating into which the sharp edge of atube forming part of a dispensing device may be forced as shown in Figures 2 and 4 by engaging a circumferential recess 8: in the tube neck with a lip 9 of a jaw ill,

see Figure 4, formed on the end of an annular gnember slidable on the tube l2, the lower eit- .tremity of which is furnished with a bevelled or sharp .edge |3 adapted to be forced into the of the upper portions of the tube 3 The lever plate 50 secured to frame 4.

4 I4 is pivoted by screws 2| on an extension 22 from a housing 23 of a pump, not shown.

Figure 3 shows a collapsible tube 3 suitable for use in conjunction with the apparatus of this invention, comprising a nozzle 1 formed intermediate its length with .a threaded portion 5 for engaging a cap 6, the threaded portion 5 defining, with the main body of tube 3, a recess'8 for the purpose hereinbefore described.

Figure 6 shows a combination of a collapsible tube, securing means and a pump, the former two being as'shown in Figures 1-5. The pump comprises a body or casing I, delivery tube 2 and piston rod 4|, and is attached to the side wall ranged to be actuated by-a lever 29 furnished with a slot. 3|] engaging a pin 3| on one .arm of a lever 32 pivoted by a screw33 to frame; 4 andconstrained ,into the position shown by a spring 34. Lever 32 is adapted to be moved about its pivot by the displacement of a lever 35 in opposition to aspring 36 about pivot 31 to bring a heel 38 on lever 35 into engagement with an abutment 39 on lever 32 and by further motion of lever'35 to impart motion to lever 29 which is in engagement with a recess 4|] in piston rod 4 t 4 lhe arrangement of heel 38 and abutment 39 is provided 'so'that lever 35 can lie back and conform with the upper edge offrame 4 when not in use to present a streamlined appearance, while being brought-to an upright position. for ease of manipulation before actuation of piston rod 4| commences. j On lever 29 there is a pin '42 arranged to cooperate with an elevation. on'a lever 44 pivoted to frame 4, the free end of which engages in a recess.45 near. the top of the pump body and constrains the latter .into the appropriate posi' tion for engagement of. catch lever. 46; When the pump is being attached to the duplicating machine, pin 42 is in the positionshown and its purpose is to contact elevation 43 on lever 44 and hold the latter up in such a position that it does not obstruct attachment of the pump; when lever 35 is subsequently rotated to actuate piston" rod 4| it moves lever 39 so that pin 3|, as it moves downwards, acts on elevation 43 and causes lever 44 to thrust the pump home, thereby correcting-for any faulty initialattachment.

Iclaim:

1.'.-In-a dispensing device comprising-7a pump for-delivering viscous ink'from a collapsible tube furnished with a nozzle comprising an-annular wall havingbehind the usual screwthreaded portion a circumferential recess, and in combination therewith, a hollow element communicating with the inlet port of the pump and terminating in a peripheral knife edge, and means adapted to bring the tube nozzle and said knife edge into abutment and drive said knife edge into the material of said annular wall at its outer extremity,

.said means comprising a lever, one arm of which is bifurcated and having in each of-the elements of the bifurcated arm a slot engaging a pin on the outside of a sleeve slidable axially on saidhol- Piston rod 4| is ar- 7 the lever the material of the extremity of said annular wall will be brought firmly into contact with said hollow element to secure an airtight joint.

2. In a dispensing means comprising a pump for delivering viscous ink from a collapsible tube furnished with a nozzle comprising an annular wall terminating in a circular substantially flat end surface, and in combination therewith, a

hollow element communicating with the inlet 10 port of the pump and terminating in a peripheral knife edge, means for engaging said tube to hold the end surface of the tube nozzle and said knife edge in abutment, and means operative to drive said knife edge into the material of said annu- 15 lar wall at its outer extremity.

GEORGE FREDERICK GATES.

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

UNITED STATES PATENTS Number Name Date 694,422 Robertson Mar. 4, 1902 1,542,335 Cardarelli June 16, 1925 1,566,836 Carling Dec. 22, 1925 1,581,412 Wishart Apr. 20, 1926 1,853,028 Aronson Apr. 12, 1932 1,941,132 Creveling Dec. 26, 1933 2,003,562 Stuart June 4, 1935 2,258,066 Oyen Oct. '7, 1941

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