US2379475A - Device for expelling the contents of collapsible tubes - Google Patents

Description

July'B, 19 5- c. J. CAMPFENS ET AL DEVICE FOR EXPELLING THE CONTENTS OF COLLAPSIBLE TUBES Filed March 26, 1940 Patented July 3, 1945 UNITED STATE s PATENT OFFICE DEVICE FOR EXPELLING THE CONTENTS or COLLAPSIBLE TUBES Cornelis Josef Campfens and Hendrik Dalstra, Middelharnis, Netherlands; vested in the Alien Property Custodian Application March 26, 1940, Serial No. 326,088 In the Netherlands April 21,,1939

,8 Claims. (craze-4.6)

' The invention relates to a device for expelling the contents of a tube for liquid, semi-liquid or plastic substances, as generally used;

tapering towards a fiat end'where the metal is bent over, and are provided at the'other end with These tubes are made of a metal adapted tobe easily.

/ V i I cover is closed again. deformed. They are mainly QfcyIindricaIjshape,

. be"screwed-onand off. since-the tubewhen out a thick and harder metal front-plate .which'canrectangular cross section. The holder hasan opening through which the nipple of the tube to be compressed may extend,'-and a hinged'longitudinal wall adapted to be pressed inwardly into the holder. The wall opposite the hinged wall is provided with a depression or recess having such wall the cover in front -:of the expelling opening is lifted and the contents of the tube are expelled. If the pressure is released then the Aclosurecap need not of use is always closed.

nccordinguto the-invention the deviceme be constructediso that' 'in. a predetermined position of the. hinged wall the cover may-be turned in such'a manner that the cam thereon will-become located outside the upwardly directed path of movement of the wall edge. Thus the hinged wall may be turned into an entirely open position and a tube may be inserted into the holder.

Within the spirit of the invention various emg bodiments and details of the expelling device may be used. Some of these embodiments and details will be described hereinafter with reference to the accompanying drawing, inwhich Fig.1 is a longitudinal section of a tube holder.

Fig. 2 is a front elevational view thereof. Fig. 3 is a cross section on the line III-III in Fig. 1.

dimensions that during the expellingrof the" con-.

tents of the tube the :hard maybe received therein.

In this way the tube may remain within the holder'until the last portion of the contents of the tube has been-expelled. The depressed por-' tion of the holder, or the recess provided therein, during the gradualv expelling of the contents end plate of'the tube V allows the hard endplate ofthje tube to beleft undeformed, while nevertheless the soft tube metal therebelow is entirely compressed. 'The base of the holder and'thehin'ged longitudinal wallfacing it might occupy asymmetrical position with respect to the'longi-tudinal' axis of the tube during the whole'expelling movement. I

According to the inventionthis' efiectwill still be increasedif the depression or recess hassu'ch,

a length that the free front edge [of the'hinged longitudinal wall when pressed inwardly lies substantially flush with the edge of the depression or recess. r

Further, according to the inventionythedevice may be constructed so that a cover for closing mounted so that the hinged longitudinal wall of the holder, while pressing with its edge against a cam .or irregular portion of the cover; in its a normal position keeps the cover closed; whereas on moving the wall inwardly the coverjfollows this movement under. the influence of a spring and frees the expelling tube.

By a pressureoftthe"thumb on the Fig. 4'shows a detail on 9. larger scale.

5 is a partial longitudinal section of a modified embodiment'of the tube'holder.

Fig.6 is a partial longitudinal section of a rd embodiment. l Y

I As appearsfroml igures l, 2-'an'd 3 the holder Fig. 7 is a rear; ele vational view thereof.

I has a mainly 'triang u lar longitudinal section and a rectangularcross section. From Fig. 2 alsothegs'hape is to'be seen which in practice has given the best. results rand which has been chosen so as to alford space ,for the collapsed material of the tube.

' The holder'l has three stationary side walls f and. one movable ,wallf-Z 'yirhich is hinged 1 to the holder at .3; g .The' wall} may be pressed inwardly :into theholder soi th'at" the'xcontents of a 'tube Placed between" the wallgl and the wall-fl will' be'expelled: The'expelling nipple of this tube extends throughan oblong hole 5 in the top wall 6 of theholder. I'he'm buthof this nipple is automatically'closed by a cover 1 cooperating the expelling opening of the tube is swingably with the hinged wall 2; This cooperation is obtained in. the. following manner.

[The wall. 2 isFc'onnected'tothe holder by a spring} in the form" of a helical'spring'around the hinge 3 in-such iii-manner thatlthewall tends't'o', occupy "the position shown in Fig. 1.

I In this position;the edge 19. of the wall 2 presses against an irregular portion l llhof :a bearing I! connected tothe coverj'l bya stem I2; The bear ,ll) connected to the holder.

ing II is pivotally and also resiliently sprln "In the position shown in Fig. l the tension of the spring 8 overcomesfthe tension of the spring 13 so that the cover I closes the opening 5. However, if the wall 2 is pressed inwardly then the spring l3 causes the cover I to be opened.-

said cover having a bearing pivotally connected to said holder, a spring urging said cover to open position, a cam portion on said bearing adapted to cooperate'with the outer edge of said In order topermit the wall 2 to be swung entirely outwardly so that. a tube may be inserted into'the holder the shape of the bearing H and theirregular portion I thereof are such that in the inwardly pressed position of the wall 2 the cover I, with its stem I2 and bearing ll may be turned away entirely, so that the wall 2 may pass (Fig.4).

The helical spring 8 as shown in Fig. 2 is provided centrally with a portion l4 located within the holder in a substantially flat plane. This portion l4 serves to press the tube in the holder against the base 4 so that the tube, also when its contents have been partially expelled, cannot be shifted.

The top wall 6 of the holder merges into the wall 4 via a depressed portion I5. This depression serves to receive the thicker-hard metal front plate of the tube when the material'of the tube itself is deformed. I

The tube, which initially in entirely filled condition-is located on the wall 4, will, at least as regards its axis, be' gradually shifted in a direction towards such wall during the expelling operation. For this reason the opening 5 in the top, wall 6 has been made oblong. In Fig. 1 a tube in unexpelled condition within the holder is indicated by thin lines.

The edge 9 of the wall 2 in itsinnermost position substantially is flush with the edge of the depression l5.

In Fig. 5 a device is shown adapted to exert a stronger force on the wall 2, in particular if this wall has approached its extreme innermost posi "tion. To this end alever l6, having a pressure surface I1, is mounted for rotation about the same axis as that about which the cover 1 may be swung, but free therefrom. The lower side of said lever when pressed downwardly moves over the wall 2.

Another device adapted to exert a strong pressure on the wall 2 is shown in Figures 6 and 7. This-device comprises a double-armed lever l8 having its fulcrum at I9 on the wall 2. The short front arm of this lever is bifurcated and both ends thereof engage toothed racks 2| fixed to the wall 6. The long rear arm 22 of the lever I8 is urged upwardly by a spring 23. Now, by pressing with the thumb on the arm 22 it is possible to repeatedly depress the wall 2 with increasing force for a short distance.

We claim:

l. A device for expelling the contents of collapsible tubes comprising a holder for the tube having side walls and-a top wall, one of said side walls being hinged to said' holder at one end thereof, a spring normally urging said hinged wall outwardly, the top wall of said holder having an opening therein through which the nipple of the tube may extend, a coverior closing the opening of the nipple, said cover being swingably mounted at one of the edges of the top wall of said holder on an axis parallel to the axis about which said hinged side wall swings "and means for transmitting the movement of said hinged side wall to said cover.

2. A device as set forth in claim 1 in which said transmitting means comprises a stem on hinged wall in such a way that said wall in its normal position keeps said cover closed while when said wall is moved inwardly said cover under the action of said last mentioned spring will uncover the opening in-said nipple.

3. A device as set forth in'claim 1 in which said cover is mounted on a'stem, a bearing on said stem pivotally mounted on said holder, a cam provided upon said' bearing normally cooperating with the free end of said hinged wall and said cam being so formed that when said cover is moved tov a certain position, said cam will be located outside. thepaft'h oflmovement of the free end of saidhinged wall.

4. A device for expelling the contents of coliapsible tubes comprising a holder for the tube having side walls and a topflwall, one of said side walls being hinged to said holder at one end thereof, a spring normally urging said hinged wall outwardly, the top wall of said holder having an opening therein through which the nipple of the tube may extend, a cover for closing the opening of the nipplQsaid cover being swingably mounted at one of the edges of the top wall of said holder on an axis parallel to the axis about which said hinged side wall swings and means for transmitting the movement of said hinged side wall to said cover, said spring having a central portion extending inwardly into said holder and being located in a substantially flat plane. I .v

5. A device for expelling the contents of collapsible tubes comprising a holder for the tube having side walls and a top wall, one of said side walls being hinged to said holder at one end thereof, a spring normally urging said hinged wall outwardly, the top wall of said holder having an opening therein through which the nipple of the tube may extend, a cover for closing the opening of the nipple, said cover being swingably mounted at one of the edges of the top wall of said holder on an axis parallel to the axis about which said hinged side wall swings and means for transmitting the movement of said hinged side wall to said cover, a pressure lever pivotally connected to said top wall So that one end of said lever may move over said hinged wall and the length of said lever and the location of its pivot axis being so chosen relatively to the said hinged wall that said lever is approximately perpendicular to said hinged wall when such Wall has been moved into its innermost position.

6. A device for expelling the contents of collapsible tubes comprising a holder for the tube having side walls and a top wall, one of said side walls being hinged to said holder at one end thereof, a spring normally urging said hinged wall outwardly, the top wall of said holder having an opening therein through which the nipple of the tube may extend, a cover for closing the opening of the nipple, said cover being swingably mounted at one of the edges of the top wall of said holder on an axis parallel to the axis about which said hinged side wall swings and means for transmitting the movement of said hinged side wall to said cover, a double armed lever pivotally mounted adjacent the free end of said hinged wall, a stationary rack provided upon said holder, a pawl-shaped end provided upon the short arm of said lever cooperating with said rack and a spring cooperating with the long arm of assume 3 said lever normally urging said long arm away from said hinged wall so that by pressing on the end of said long lever arm said hinted wall may be depressed by the interaction 01' said pawlshaped end with said rack.

7. A device for expelling the contents of collapsible tubes comprising a holder for a tube, one side wall of said holder being hinged at one end of said holder, a spring normally urging said side wall outwardly, the top wall of said holder having an opening therein through which the nipple of the tube. extends, a cover for closing the opening in the nipple and means for transmitting the movement of said hinged side wall to said cover.

8. A device as set iorth in claim 7 in which said transmitting means comprises a stem upon said cover, a bearing upon said stem pivotally connected to said holder, a sprins normall urgin: said cover to open position, a cam portion upon said bearing for cooperating with the free end of said hinged wall in such a wa that when

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