US1772409A - Dispensing mechanism - Google Patents

Description

Aug. 5, 1930. N. J. H. WOOD DISPENSING MECHANISM 2 Sheets-Sheet 2 Filed Aug. 25, 1928 wil UNITED STATES PATENT OFFICE NORMAN J. H. WOOD, 01' MIAMI, FLORIDA DISPENSING ME GHANISM Application filed August 23, 1928. aerial No. 301,556.

10 liquid holding tube, said barrel being adapted fora hollow brush head to be detachably connected with one end of the barrel for communication with the discharge neck of the collapsible tube, additional means being provided at the other end of the barrel for collapsing the tube to extrude the paste or liquid therefrom, and through a brush head or the like so that-a quantity of the paste or liquid will be delivered to a brush or the like.

A further object is to provide a dispensing mechanism of the above mentioned character that includes a screw threaded shaft that is journaled for rotation within the barrel, a rotatable cap being mounted on the rear end of the barrel, an external ring gear being associated with the cap for cooperation with a pinion carried by the rear end of the screw threaded shaft whereby said shaft will be operated when the cap is turned, a follower or tube collapsing member being arranged for longitudinal movement on the screw threaded shaft when the rotatable cap is actuated.

A further object is to provide a dispensing mechanism of the above mentionedcharacter that may be adapted for use in combination with an attached toothbrush or a shaving brush as desired, the parts being so constructed as to permit the same to be readily and easily assembled and disassembled for cleaning purposes and to further facilitate the removal of an empty tube and the refilling of the barrel with a full paste or liquid containing tube whenever necessary.

A further object is to provide a dispensing mechanism of the above mentioned character which is simple in construction, inexpensive, strong and durable and further well adapted to the purposes for which it is designed.

Other objects and advantages will become apparent during the course of the following description,

In the accompanying drawing, forming a part, of this specification, and in which like numerals indicate like parts throughout the same;

Figure 1 is a side elevation of the dispensmg mechanism embodying my invention ihoylving the protective casingover a brush Figure 2 is a similar view showing the easmg removed, and a tooth brush associated with the device, 4

Figure 3 is a longitudinal sectional view through the barrel and a portion of the easmg showing the relationship of the parts constituting the present invention,

Figure 4 is a sectional view taken approximately on the line 4-4 of Figure 3 looking in the direction of the arrows,

Figure 5 is a similar section looking in the same direction,

Figure 6 is a detail view' of the screw threaded shaft and the supporting means therefor, and

Figure 7 is a longitudinal sectional view through the tooth brush.

In the drawings, wherein for the purpose of illustration is shown a preferred embodiment of my invention, the numeral 1 designates the cylindrical barrel that is open at its respective ends and within which is fitted the shell 2, the end of the shell extending beyond the ends of the barrel as more clearly shown in Figure 3.

An annular bead 3 is formed on the outer face of the shell at each end thereof. A air of bearings 4 are arranged on the inner ace of the shell 2 adjacent the respective ends thereof for receiving the longitudinally extending feed screw 5.

A pinion 6 is arranged on the rear end of the feed screw and this pinion projects beyond the rear end of the shell as suggested in Figures 3 and 6.

Any appropriate means is associated with the forwardmost bearing'for securing the feed screw in position. The purpose of this feed screw will be presently described.

Fitted in a detachable manner on the forin the rear en ward projecting end of the shell 2 is the conical shaped head 7, .the same being formed with a central through bore, the forward ortion of which is threaded as shown in i re 8.

e head 7 is furthermore externally threaded as at 8 adjacent the larger inner end ortion thereof, the head 7 being of conical ormation. The rear edge of the conical shaped head 7 is adapted to abut the forward end of the barrel 1.

A knurled cap 9 is detachably and rotatably fitted on the rear end of the-shell 2 and formed on the inner face of the central portion of the cap 9 is the external gear unit 10 that has meshing engagement wit 6 carried by the rear end of the feed screw 5 for turning the feed screw when the ca 9 is actuated and this arrangement ismore c early illustrated in Figures 3 and 5 of the drawin A tooth brush, bath brush, sham o0 brus nail brush or shaving brush may used in conjunction with the present inventionand in the present instance, I have illustrated a tooth brush, the same including a hollow brush head 11 from which extends rearwardl the hollow shank 12, the bristles extending fiom the brush head being shown at 13.

The free end of the shank 12 is formed with an externally threaded portion 14 that has threaded enga ement within the threaded portion of the ore formed in the head 7 to provide adetachable connection between the shank and the head 7 and a shoulder 15 is formed on the shank forwardly of the threaded portion 14 for limiting the rearward movement of the shank in the head 7.

A paste or liquid conducting channel 16 is formed in the brush head and shank and dischar orifices 17 provide a means whereby the liquid or paste-will be discharged into the bristles 13 of the brush.

An internal] threaded socket 18 is formed d of the shank 12 for receiving the threaded shank 19 of a collapsible paste or 1i uid receiving tube 20 of the conventiona construction, said tube being disposed within the sleeve and the barrel as indicated in Figure 3.

In this manner, a direct communication will be afforded between the discharge neck of the aste tube and a brush or the like for supp ying a paste or liquid thereto when the brush or the like is in use and furthermore when the tube 20 is collapsed or depressed.

The collapsing means includes a oke 21 that is formed with an internally t readed transverse bore for engagement with the feed screw 5 and a transverse pin 22 extends be tween the free ends of the arms of the yoke and has. loosely mounted thereon the roller 23, which roller engages with one side of the tube 20, the opposite side of said tube resting against the adjacent portion of the shell 2.

A cap or casing 24 is disposed over the the pinion brush head when the device is not in use and the open end of the cap is internally threaded for en agement w1th the threaded portion 8 of t e conical shaped head 7.

In use the cap 24 is removed and'by turning the knurled cap 9 in one direction, the gear 10 will rotate the pinion 6 whereby to actuate the feed screw 5 and this will result in the yoke 21 being moved forwardly within the barrel 1 at the same time, the roller 23 will compress or collapse the tube 20 so as torextrude a certain amount of the paste or liquid contents through the discharge neck 19 into the channel 16 and through the dischar e orifices 17 into the brush or the like.

A er the contents of the tube 20 have been emptied the ca 9 is rotated in the reverse direction where y to retract the carriage and the tube collapsing roller to the rear end of the barrel and the empty tube is replaced by a full tube whereupon the device is again ready for use.

As heretofore stated, a di ensing mechanism of the above mentione character can be readilyand easily assembled or disassembled for cleanin purposes thereof and when the device is to e used for other pur oses, a

' brush of the type similar to the toot brush may be connected to the conical head.

Furthermore the provision of the casing for the brush promotes sanitation and furthermore protects the same when not in use.

A displensin g mechanism of the above mentioned c aractercan be constructed at a very low cost and will furthermore be stron and durable and at all times positive and e cient in its operation.

While I have shown the preferred embodiment of my invention, it is to be understood that various changes in the size, shape and arrangement of parts may be resorted to without de arting from the spirit of the invention'and the scope of the appended claim.

Having thus described my invention, what I claim as new is:

In a dispensing device of the class de-' scribed, a cylindrical barrel open at its respective ends, an open ended shell fitted in the barrel and having its ends extending beyond the respective ends of said barrel, a collapsible paste tube arranged within the shell, a dispensing head secured on the forward end of the shell for receiving the discharge neck of the tube, a feed screw joumaled for rotation in the shell, bearings for the ends of the feed screw carried by the end portions of the shell, a yoke formed with a transverse threaded bore in the crown portion thereof for receiving the feed screw, a tube engaging roller supported between the ends of the arms of the yoke for cooperation with the adjacent side of the shell to colla se the tube and extrude the paste therefrom t rou h the dispensing head, a pinion secured on e rear end of the feed screw, a rotatable cap supported on the outer end of the shell, and a gear unit carried by the inner face of the cap for meshing engagement with the pinion to actuate the same and move the yoke along the feed screw.

In testimony whereof I aflix my si nature.

NORMAN J. H. W OD.

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