US1897043A

US1897043A - Collapsible tube closure

Info

Publication number: US1897043A
Application number: US591555A
Authority: US
Inventors: Ralph N Ellis
Original assignee: Individual
Current assignee: Individual
Priority date: 1932-02-08
Filing date: 1932-02-08
Publication date: 1933-02-14
Anticipated expiration: 1950-02-14

Description

Feb. 14, 1933. R. N. ELLIS COLLAPSIBLE TUBE CLOSURE Filed Feb. 8. 1932 Patented Feb. 14, 1933 RALPH N.A ELLIS, F DES MOINES, IOWA COLLAPSIBLE TUBE CLOSURE Application led February 8, 1932. Serial No. 591,555.

The object of my invention is to provide a collapsible tube closure which is simple, durable and comparatively inexpensive to manufacture.

A further object is to provide a closure cap for a collapsible tube which cannot be entirely detached from the tube and lost.

Still a further object is to provide a closure cap having a pin extending into the collapsible tube and provided with a valve plug so that when the closure cap is detached and then pulled outwardly a charge of the plastic material within the tube will be discharged and successive charges will be of substantially the same size.

A further object is to provide a valve plug which is slidable relative to the pin and which is attached to the closure cap so as to prevent expelling any of the plastic substance while the closure cap is being unscrewed.

With these and other objects in view my invention consists in the construction, arrangement and combination of the various parts of my device, whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claims and illustrated in the accompanying drawing, in which:

Figure 1 is a side elevation of a collapsible tube showing my closure cap connected therewith.

Figure 2 is an enlarged sectional view on the line 2-2 of Figure 1.

Figure 3 is a sectional view similar to Figure 2, showing the parts in a different position with the detachment of the closure cap just completed.

Figure 4 is a side elevation showing the closure cap pulled outwardly for discharging a charge of plastic material; and

Figure 5 is a view similar to Figure 3, showingr the parts in the position of Figure 4 and the charge of plastic material removed from the collapsible tube.

On the accompanying drawing I have used the reference numeral 1() to indicate the container portion of the collapsible tube. The container 10 has a head 12 terminating 1n a neck V14. The neck 14 has a shoulder 16 be- 50 yond which a threaded portion 18 extends.

A `valve seat 20 is formed within the tube 10 and a passageway 22 extends from the valve seat 20 and leads through the threaded portion 18. The passageway 22 is located between the shoulder 16 and a closed end 24 55 of the neck 14.

The closed end 24 is provided with a perforation 26 through which a pin 28 extends. The pin 28 is connected with a closure cap 30. The pin 28 may be of metal and provided 60 with an enlarged head 32. The closure cap 30 may be of Bakelite or other composition moulded around the head 32. The tube 10 and neck 14 are usually made of die cast metal. i

The closure cap 30 is internally threaded as indicated at 34 for coaction with the threaded portion 18 of the neck 14. The lower end 36 of the closure cap 30 is adapted to coact with the shoulder 16 when the clo' 70 sure cap is in closed position as shown in Figure 2.

The inner end of the pin 28 is shouldered as indicated at 38 and reduced as indicated` at 40. The reduced portion 40 terminates in 75' a head 42. A valve plug 44 is slidable on the reduced portion 40 between the shoulder 38 and the head 42; The valve plug 44 is adapted for seating against the valve seat 2O.V

Practical' operation l In the operation of my closure cap for collapsible tubes the parts originally assume the position shown in Figure 2 with the closure cap in closed position.

When it is desired to remove a charge of the plastic material 46 from the tube 10,'the closure cap 30 isv first rotated for detachment as shown in Figure 3.

The reduced portion 40 of the pin 28 is 90 of substantially the same length as the travel of the closure cap 30 from the position of Figure 2 to the position of Figure 3. This prevents any upward movement of the valve plug 44 while detaching the closure cap and consequently eliminates any expulsion of the plastic material 46 from the discharge passageway 22 which would occur if the valve plug 44 moved upwardly with the pin 28 during the closure cap detachment operation.

plastic material, suchy as toothpaste orithe like. "f

the brush 48 as shownin'Figure-i lfjmoreV plastic material isrequired, thewpinQS c arr beV pushed inwardly and then"`pulledi"oiit' t 1 wardly again. Y 5

V:- l `Some,changes may-,be made'zintherconstruction and arrangementjof the parts 'of'l The 'charge' 46a may now be wiped When it is desiredto` close the tube, thecap I 30fis pushed inwardly fand inward Y movement ofV the @valve plug-,A 441': will Y tendfto draw the., j plastic.materialinwardlyfrom the discharge passageway 22 so; as 'tdprevent' any squeezing` of material from 4between `the threads 3 4 and 18 and across the shouldery 16 whenrthe cap! is finally screwed to. fully closedffposition.

L )Thek blost-l motion-connection provided by sliding of the -valve plug i441:` on theireduced pOltiOIl 40 Tofl the pin" 28 is;V quite-important to prevent squeezing; of the", plasticl material.

vinto the ythreads tof thernecky and@ closure cap I duringthe detachment operation. `The valve 1 plug 44, when4 vin' the :position ofFigure :5, quite effectively closesthe collapsible. tubeagainst further discharging-i, of its` contents l ifjit iSidesired:to-leave'thetube-open while therserl v`is Vshaving himself. The particular-QV arrangement 'r of parts also effectivelyl prevents losing v'of theclos'urel cap from the'tube.

my, device without -dep arting "from :the real spiritand-purpose of my invention, and it' 1s my intention'to cover byimy claims, any" modifiedl forms ofstructure oruse; vofy nie-4 combination `with' `a"container portion and chanical equivalents, which fmayfbejr'easonf 1L In a collapsible tube construction, jithe a neck thereon,s a id neckhaving an iliterior valvef seat, arr` exterior shoulder, a threaded O portion beyond said'shoulder, the end 'of saidi threaded portion beingfclosedfeXcept forja; perforation therein" and saidv neck having a discharge passageway from valve'fseat laterally `through the threads ofsaid threaded Vportion with its outer {endilocatedbetween saidshoulderK andiv'thefclosed(end of --said a" closure V 'za'p interior'fly;threaded to fit thef threaded portion v Said neck and' against said shoulder, a pin connected ywith saidy clo s ure-cap, .project-ing 'therefrom and extendingfthrough the perforation ofqsaid closed. end V-ofsaidf gneclnthe :inner end of said pin being" shoulderedand reduced and terminat-v ing in an enlarged-headand a valve plug slidable on said pin between said shoulder.

and said head.

, 2. ,In a collapsible tubeconstruction, the l combination with' a container portion and a neck thereon, said neck having an interiorv vvalve seat,an exterior shoulder, a shank por- .tion-beyond said? shoulder, the end of sa1d I shankgportion vbeing closed exceptfor .a perforationtherein and saidneck having adischarge passageway from said valve seat laterally througlifsaidshank kportion and terminating between said shoulder and said ficlose'ldfehdofsaid neck, ofa closure for said 4neckc o'niprisingaclosure cap to it over said vshankportion of said neck andagainst said shouldeniapin connected with saidlcap, pro-V ectingtherefrom and extending through the perforation; of said clos'ede nd :,of; said neck,

the inner end'of said pinV being shouldered?,

and. reduced and terminating in an enlarged headandiavalve/plug slidablefonsaid v between said.,shoulderand said head; n

v 3.1 In fa 'collapsible tube constru'ctiomLthe A combination' with a container portion: and a neck; thereon, `#said neck havingv anV interior valveseat-- an exteriorgshoulder, athreaded Y portion beyond/said shoulder, the end ofi a discharge passageway from saidivalve seat laterallyjthroughl the threadsofsai dthre'aded ofL-fa closure'f- Y for said;k `neck comprising a closure cap interiorlygthreaded; to;-tit lthe threaded: portion .of said neck and against l.said shoulder, a pinV connected l with said? closurejcap, projecting;k therefrom: `and eX-f tending through the perforation of saidclosed end `of said neck and ayalve plug-'on the inf saidthreadedportion-beingclosed, excel'otfor-v v portioniwith'Y its outer. end locatedv betweensaidshoulderand thelclosed endofsaidvneck,l

nerend of; said'pinfor coactionwith said v 4. vIn a collapsibleitube construction, the.: i

necl'rfthereon, said neck :having: an interior valve seat andbeing exteriorly threaded, the

end of said@ neck being closed, `except fora perforation therein "and f said neck having a discharge fpassagewayrfrom said valve l)seatV laterally through thethreads ofsaid neck,fof Ya closure for-.said neck comprising afv closure* cap` interiorlygthreaded` to coact with the ythreaded portion of said neck; a pin connected with said '3losureicap projecting there? from and extendingfithro'ugh the perforation of the'closedendof said'neck, the'innerfend v offsaidfp'in being shouldered and reduced and terminating in an enlargedhead and a? valve plug sli'dable on saidf pingbetweensaidfshoulit" `der andsaidheadfz. 1'

:5; Iniga; collapsible .tube combination-with a 'container portion and aneck r-thereon,= said` neckt having ff an interior construction, tfhe'fl combination; withffa cont-ainerportion and a valve seat and being eXteriorly threaded, the n end-lof` -said neck. being closed, except. for a` soA perforation therein and said neck having a discharge passageway from said valve seat laterally through the threads of said neck, of a closure for said neck comprising a closure cap interiorly threaded to coact with the threaded portion of said neck, a pin connected with said closure cap, projecting therefroni and extending through the perforation of the closed end of said neck, and a valve plug on the inner end of said pin for coaction with said valve seat.

6. For use with a collapsible tube neck having a Closed end and a shoulder, said closed end having a perforation, a threaded l5 portion beyond said shoulder and a valve seat within said neck and said neck having a. passageway from said valve seat and laterally through the threads thereof, a threaded closure cap adapted to seat against said shoulder, a pin rigid therewith and projecting through said perforation and a valve plug on the inner end of said pin for coaction with said valve seat.

7. For use with a collapsible tube neck having a. closed end and a shoulder, said closed end having a perforation, a threaded portion beyond said shoulder and a valve seat within said neck and said neck having a passageway from said valve seat and laterally through 3o the threads thereof, a threaded closure cap adapted to seat against said shoulder, a pin rigid therewith and projecting through said perforation, a valve plug on the inner end of said pin for coaction with said valve seat, said valve plug having limited sliding movenient relative to said pin substantially the distance of the movement of said closure cap from position against said shoulder to detached position.

Des Moines, Iowa, November 4, 1931.

RALPH N. ELLIS.