US1923974A - Dispensing device - Google Patents

Description

Aug. 22, 1933. R w HAND 1,923,974

DISPENSING DEVICE Filed April 16, 1952 fi'g. T5627 l g Z3 20 Patented Aug. 22, 1933 UNITED STATES DISPENSING DEVICE Richard w. Hand, Manhasset, N. Y.

Application April 16, 1932. Serial No. 605,688

2 Claims.

This invention relates to certain new and useful improvements in dispensing devices.

The primary object of the invention, is to provide a dispensing device for tooth paste, shaving cream and similar substances consisting of a rigid paste tube or cylinder and a screw operated feed plunger, the latter comprising a permanent part of the dispensing device and'the paste tube is disclosed as a refill discardable tube to be purchased independently of the feed device and discarded when the paste contents has been dispensed.

A further object of the invention is to provide a dispensing device of the foregoing character wherein the screw for operating the feed plunger carries a cap member for quick engagement with a paste tube or cylinder and also a polygonal operating head for the screw rod that is of a diameter slightly greater than the diameter of the cap and tube to eliminate rolling motion of the dispensing device when placed on its side, and also constituting a stand support when the device is in upright position.

A further object of the invention is to provide a dispensing'apparatus embodying a permanent expelling means and a refill discardable tube to be associated therewith and wherein the expelling means includes a plunger having tracking engagement with inwardly pressed guide beads on the discardable tube with the plunger provided with a conical outer side receivable in the correspondingly formed discharge nozzle of the discardable tube for the complete expulsion of the contents of the tube.

With the above and other objects in-view that will become apparent as the nature of the invention is better understood, the same consists in the novel form, combination and arrangement of parts hereinafter more fully described, shown in the accompanying drawing and claimed.

In the drawing:

Figure 1 is a top plan view of a dispensing device constructed in accordance with the present invention illustrating the polygonal operating head for the plunger feeding screw;

Figure 2 is a side elevational view of the assembled device; v

Figure 3 shows side elevational views of the permanent plunger and operating screw, the refill discardable tube or cylinder and the closure cap for the discharge end of the tube;

Figure 4 is a longitudinal sectional view showing the screw operated plunger in position in the tube;

detachable therefrom with the refill tubeclosed at each end by a removable cap.

Referring more in detail to the accompanying drawing, there is illustrated a dispensing device wherein the permanent parts thereof in the, preferred form of the invention comprise a paste feeding plunger and an operating screw therefor that carries a closure cap for a tube and an operating head for the screw while the container or tube for the paste is of a temporary character and is purchased as a refill discardable tube and'with which the screw operated plunger is associated. The refill discardable tube 10 containing paste or similar material 11 as illustrated in Figure 6 is of cylindrical form and preferably formed of rigid material, such as aluminum with one end thereof fashioned to provide a conical discharge nozzle 12 externally threaded as at 13 for the reception of a removable cap 14. The other end of the cylindrical tube 10 is closed by a flange cap 15 having a quick detachable thread engagement 16 with a side wall of the tube 10 as illustrated. The

tube 10 is purchased in the form illustrated in Figure 6 and constitutes a refill for the permanent parts of the dispensing device.

As shown in Figure 3, the permanent part of the dispensing devicecomprises a rod 17 carrying an external spiral rib 18 forming a screw. thread with which is engaged the feed plunger 19 as shown in Figures 3 and 4. The lower face of the plunger 19 is of conical form, mating with the conical nozzle and is movable into the nozzle for the complete expulsion of the contents of the discardable tube. With the conical formation of the plunger, the central portion thereof isof increased diameter and provides an increased length of engagement with the feed screw for the more effective operation of the plunger. Also, the lower end of the feed screw terminates in spaced relation to the central outlet of the nozzle and this arrangement permits complete reception of the plunger in the discharge nozzle. The closure cap 15 for the tube 10 is discarded and the screw rod and plunger inserted into the the screw rod 17 is annularly reduced to form a swivel bearing for a closure cap 20 carrying an edge flange that has a quick detachable thread connection 21 with the thread upon the corresponding end of the tube 10. The terminal upper end of the screw rod 17 has a disk head 22 anchored thereto as at 23 and of polygonal formation as indicated at 24, being of slightly.

greater diameter than the closure cap 20 so that when the tube is laid upon its side, the same will be restrained from rolling movement. The head 22 efiects rotation of the screw rod 18 for the feeding of the plunger 19.

The tube 10 is provided with diametrically opposite inwardly directed longitudinally ex-' at each end thereof a throw-away cap.

From the above detail description of the invention, it is believed that the construction and use thereof will at once be apparent, it being noted that the screw and feed plunger constitute the permanent parts of the device while the tube is purchased as a refill and is discarded after use, and while there are herein shown and described 1323 974 tube as shown in Figure 4. The upper end of the preferred embodiments of the invention, it is nevertheless to be understood, that minor changes may be made therein without departing from the spirit and scope of the invention as claimed.

I claim:

1. In a dispensing device, permanent expelling means including a feed screw, a tube cap swivelled on one end thereof, a polygonal operating head for the screw fixed to the end thereof outwardly of the cap, a plunger threaded on the cap and having diametrically opposite peripheral notches therein, and a refill discardable tube having quick detachable engagement with the cap and receiving the feed screw and plunger, said discardable tube having inwardly pressed longitudinally extending beads to be received in said plunger notches to prevent rotation of the plunger during operation of the screw.

2. In a dispensing device, a feed screw, 2. plunger thereon, a tube cap closure and an operating head on one end of the screw and a refill discardable dispensing tube having quick detachable engagement with the tube cap closure and having a discharge nozzle, said plunger having a conical outer side providing a center portion of increased depth to increase purchase of the plunger on the threads of the feed screw and said discharge nozzle being of conical form and open at its lower end in spaced relation to the lower end of the feed screw whereby the conical side of the plunger is movable into the nozzle to insure complete discharge of the contents of the tube.

RICHARD W. HAND.

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