US2072327A - Dispensing device - Google Patents

Description

March'Z, 1937. w. FRIEDMAN ET AL DISPENSING DEVICE Filed Dec. 27, 1932 INVENTOR W1 11 1am fiz'edman ""4 .B jamin Lmdner' BYTHEIR ATTORNEY? I I-f'r A 5% 35 the plunger partly advanced as occurs Patented Mar. 2, 1937 UNITED STATES 2,072,827 DISPENSING DEVICE New York, and Benjamin r, Larchmont, N. Y.; sai signer to said Lindner Application December 2'1,

William Friedman,

Lindne 11 Claims.

This invention relates to dispensing devices, and more particularly to that type of dispensing devices wherein the material to be dispensed is extruded as required from the container.

The objects of the invention are to provide an improved dispensing device of such inexpensive character that it may be thrown away when the contents have been once extruded; to provide a dispensing device wherein aplurality of substances 10 may be retained in separated condition but extruded by a single operation by the user; to provide a device which may be readily sealed and readily unsealed for use; to provide a compact device in sealed condition; to provide a plunger stem which may be retracted to both break the seal and open the extruding passage and to position the said stem ready to extrude the material;

to secure simplicity of construction and operation; advantages and results as may be in the following description. 1 Referring to the accompanying drawing, in which like numerals of reference indicate similar parts throughout the several views;

Figure l is an elevation of a dispensing device constructed in accordance with our invention, shown in sealed condition as received by the customer.

Figure 2' is a longitudinal sectional view on 30 line 2-2 of Fig. 1, likewise showing the device in sealed condition;

Figure 3 is a similar sectional view, showing the plunger in position ready to extrude the material; Figure 4 is a similar sectional view, showing durin brought out extrusion of the material; Figure 5 is a similar longitudinal sectional view of a modified construction of dispensing device having a single chamber for material; and

Figure 6 is a sectional view of a modified form of sealing means for the extruding end of the device.

In the specific embodiment of the invention illustrated in said drawing, and referring initial- 45 ly to Figures 1 to 4 more especially, the reference numeral Ill indicates the primary container which is preferably of elongated, tubular construction with one end rounded and provided with an extruding orifice l I. At the opposite end of the con- 50 tainer is provided a plug or other closure l2 secured in appropriate manner, as by cementing, to the container. This plug is shown as having an outer peripheral rim i3 slightly larger than the inside diameter of the container so as to limit 55 insertion of the plug. At the inner end of the PATENT OFFICE d Friedman as- 1932, Serial No. 649,024

plug the central portion is cut away providing a recess or pocket It thereat for purposes hereinafter explained. By virtue of this recess l4, the inner end of the plug constitutes a stop I5. I Within the container is mounted a plungerhead iii of cork or other suitable material which, when the device is received by the user, is in engagement with the said stop l5 formed at the inner end of the plug. By imparting a longitudinal sliding motion to this plunger headl6 within the container toward the end having the orifice ll, extrusion of the material in the container is obtained. In the particular showing of Figures 2, 3 and 4, an inner container i1 is shown of a diameter such as to substantially fit within the outer or primary container l and having a similarly rounded end with an orifice i8 like the primary container. This inner container is of less length than the primary container so as to be slidable therein, and, as received by the user, is in position with its end against stop l5. The plunger head above described fits snugly within this inner container and has an outer end similar to the rounded end of the container so as to ultimately nest therewith for obtaining an extrusion of as much of the contents as possible. In use, the forcing of the plunger outward extrudes material of the inner container into the outer container and extrudes the mixed materials from the outer container.

As a further and important feature of our invention, we provide, as part of the plunger for operating the plunger head, a plunger stem l9. This plunger stem has one end, for convenience designated the inner end, provided with a flaring or other shoulder 20 which will rest against the marginal portion of the rounded end of the primary container about the extruding orifice. Beyond this shoulder 20, the stem provides a reduced portion or neck 2 l which in Figures 1 to is shown as somewhat undercut toward the shoulder, and in Figure 6 is shown at 2| as threaded, both of these constructions being for providing means for sealing the orifice and retaining the plunger in position within the co'ntainer. Where the undercut neck 2| is provided, the seal may be assured by application in fluid condition of a substance 32 which will harden in place, such for example as a tion. In Figure 6, a cap ornut 33 is shown which is screwed upon the threaded end, of thefjstem outside of the container. In this instancethe cap or nut has to be removed before the device vis used, and in the other showing, the sealingmatecellulose composi rial is broken by twisting or retracting the plunger stem.

The plunger stem extends axially through the container and through a.

and the plunger head of cork.

It will be noted, that in use 01' the device, the

outer end of the plug. likewise brought against after which the inner assembly is slid Joints as gagement with the inside of the single or primary container ll.

g has represented only one inner conbe understood that any number nesting arrange- Furthermore, other detail changes and light of the prior art.

Having thus described the invention, we cla 2. A dispensing device comprising a container for material to be retracted through the plunger head without being permitted to leave the container.

5. A dispensin device comp ising in combinetion with a container, a plunger head, a stem for operating said plunger head, said stem having a shoulder for engaging said plunger head for operating the same in one direction and being movable with respect to the plunger head in the opposite direction whereby the stem cannot retract the plunger head from an advanced position, and a stop for limiting retraction of said plunger head in a position advanced from the stopping of the retraction of said stem, thereby enabling the stem to be retracted through .the plunger head without being permitted 'to leave the container.

6. A dispensing device comprising an elongated container having an orifice therein, a stem wit said container, said stem having a shoulder underlying the margin of the container next said orifice and having a threaded terminal neck protruding through said orifice, and a threaded cap applied to said protruding neck and overlying said margin for sealing the orifice and retaining the stem in orifice-closing position.

'7. A dispensing device comprising a plurality of nested containers slidableone within another, each container carrying a material to be extruded, and means normally positioned in the extruding ends of said containers and retractable from said ends forproviding open extruding orifices in use. I

8. A dispensing device comprising a plurality of nested containers slidable one within another, a plunger within the inner one of said containers, and means normally positioned in the extruding ends of said containers and retractable from said ends for providing open extruding orifices in use.

9. A dispensing device comprising a plurality of nested containers slidable one within another each having an end for extruding purposes initially sealed for separating the contents of the several containers, and means normally extending through said extruding ends and retractable therefrom for opening each of said containers whereby the contents may be extruded.

10. A dispensing device comprising a plurality of nested containers slidable one within another and initially sealed for separating the contents of the several containers, means for opening each of said containers, and a plunger head within the inner of said containers operable in extrudin direction only whereby the material in that container may be extruded to the next and said inner container slid within the next to extrude the material therefrom andretraction of the material into either container is prevented.

11. In combination, a container having an orifice at one end and having its other end open, a closure for said open end, a plunger head in said container initially at the end of the container next said closure, a stem passing through said closure and through said plunger head, said stem having an inner enlarged end retractable through said plunger head and functioning both as a 010- sure for said orifice and a stop against complete withdrawal of the stem as well as functioning as a means for advancing the plunger head by a returning inward movement of the stem after retracting the said enlarged end through said plunger head.

WILLIAM FRIEDMAN.

BENJAMIN LINDNER;

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