US2283414A - Liquid dispensing device - Google Patents

Description

v'May 19, 1942- c. COOPER ET Al.

LIQUID DISPENSING DEVICE Filed Jan. 3, 1940 A O/O mm ,/0 Y

l mvNToRs: LAUDE COOPER AND CHARLES wsniQmAN ATT'YS Patented May 19, 1942 LIQUID DISPENSING DEVICE Claude Cooper, Watertowmand Charles Shersaicl Sherman assignor to man, Boston, Mass.; said Cooper Application January '3, 1940, serial No. 312,210Y

4o`laims. (o1. 221-85) This'invention relates to a liquid storage and dispensing device for use in applying a liquid dentifrice to a tooth brush. The device com` prises a reservoir such as a bottle with an opening at the top, a pump within the reservoir, and a pump actuator provided with a passage forthe liquid extending upwardly from the reservoir and having one or more downwardly-directed orifices for the discharge of liquid upon a tooth-brush which operates the actuator to cause the expulsion of the liquid. The invention will be best understood by reference to the following description when taken in connection with the accompanying drawing of one specific embodiment thereof, while its scope will be pointed out more particularly in the appended claims.

In the drawing:

Fig. 1 is an elevation of a liquid storage and dispensing device;

Fig. 2 is a sectional view on an enlarged scale on line 2 2 of Fig. l;

Fig. 3 shows a portion of Fig. 2 with some parts n on line 5 5 of` Fig. 1;

Fig. 6'is a View similar to Fig. 5 but with some parts in another position;

Fig. '7 is a sectional viewon an enlarged scale` on line 1 1 of Fig. 5;

Fig. 8 is a bottom plan view of the parts in Figs. 5 and 6;

Fig. 9 is a sectional View on line 9 9 of Fig. 2;

Fig. 10 is a plan of a shut-off valve; n

Fig. 11 is a sectional view on line II II of Fig. 5; and

Fig. 12 is a sectional view of a packing washer.

Referring to the drawing and to the embodiment of the invention illustrated therein by way of example, there is shown a liquid storage and dispensing device comprising an appropriate reservoir such as a bottle I4 to contain a supply of liquid, such as a dentifrice to be dispensed. The bottle has a neck I6 to which an appropriate cap I8 is suitably secured as by providing the cap with an internal screw-thread cooperating with an external thread 22 on thebottle neck. The cap affords a support for a novel dispensing arrangement including a pump such as that now to be described.

shown The pump 24, best shown in Figs. 5 and 6, comprises a vertical cylinder 26 within which a pistonV 28 is arranged to reciprocate vertically and has a piston-rod 3|] provided with a lengthwise outlet passage 32 from a chamber 34 beneath the piston.

The lower end of the cylinder restsV upon the bottom ofthe bottle and is maintained in engagement therewith by a spring 35 which also urges the piston upwardly. The lower end ofthe spring rests against a fixed abutment such as a split ring 38 received in an annulargroove 4U in the cylinder 26. This abutment serves also to vlimit upward movement of the piston under the influence of the spring. The upper end of the spring rests against a movable abutment such as a` ring 42 surrounding and carried bythe pistonrod 39. Theupward thrust off the spring maintains this ring against one or more, herein two projections 44 conveniently formed on the pistonrod 30.

The lower endvof the cylinder 26 has a lixed head-Mpresenting a seat 4B` for a non-return valveherein aball 50 permitting inow of liquid from the bottle. I4 to the chamber 34 by wayV of one or more, herein 'a plurality of branch inlet passages 52 inthe bottom of the cylinder and a main inlet passage 54 which leads upwardly to the chamber 34. In the present example, gravity aloneis relied upon vto seatL the ball valve 50 as vthe device is intended tobe used in an upright position. When the Vpiston .rises under the influence of'the spring, thereby creating a de-` pression within the chamber beneath the piston, the inlet valve rises from its seat and liquid enters the chamber, filling the latter, whereupon `thev valve' seats. vDownward movement of the piston in oppositionto the` spring causes expulsion of liquid from the chamber upwardly through the passage in the piston rod. No non-return valve (see Fig. 2) suitablyY secured to the bottle-neck I 6 as by an arrangement, now to be described, which performs other functions. The sleeve is provided with a flange 58 which rests upon a comparativelythick, compressible washer 62 surrounds the pissuch as to afford ample clearance for freedom of movement ofthe piston-rod when the device is to be operated. However, movement of the pistonrod can be prevented by screwing the cap downwardly thereby squeezing the washer 62 (see Having thus described one embodiment of the invention, but without limiting ourselves thereto, what we claim, yand desire by Letters Patent to secure is:

l. In a device for dispensing liquid from a reservoir onto a tooth brush, the combination of a liquid outlet and an abutment arranged one above the other in vertical alignment so that liquid may be discharged from the outlet onto the ends of the bristles when the back of the brush rests upon the abutment, and means operated by vertical'movement of said abutment under the tor 65 having van opening 68 to receive the brush. Y

The actuator is suitably secured to the pistonrod 3U as by a screw-thread 10, and the passage 32 in the piston-rod leads to a passage 'I2 within the actuator. In the present example, the passage is branched Eand extends about the opening 68 to thetop of the latter where the passage has one or more, herein two outlets 14 which, in

this instance, diverge so as to spread the liquid. To prevent the liquid from trickling down the sides of the openings 68, the outlets 1.4 are formed in a nozzle 'I6 (see Fig. 2). The pump piston displacement and the passages tothe outlets are so calculated las to cubic capacity that on the one hand the downward thrust of the piston displaces enough liquid to supply the brush, and on the other hand, the return stroke of the piston withdraws unused liquid a considerable distance from the outlets.

If desired, an appropriate shut-off valve may be provided to insure that there shall be no possible leakage from the outlet passages during transportation. In the example shown, this shut-off valve takes the form of a rotatable plug 'I8 having a passage 80 which (see Fig. 2) normally registers with the passage 12 but may be turned to shut off the latter. Leakage from about the valve is conveniently prevented as by two compressible packing rings 82 each ofwhich appears, for example, as shown in Fig. 12 before being installed in countersunk seats 84 in which they are held under compression as by washers 86 held in'place by pins 88 which (see Fig. 10)

are received in holes 90 in the valve. Either pin iniiuence of the back of the brush to cause liquid to be released at said outlet.

2. In a device for dispensing liquid from a reservoir onto a tooth brush, the combination of a member having `an opening presenting at the .top a liquid outlet and at the bottom an abutment arranged one above the other in vertical alignment so that liquid may be discharged from said outlet downwardly upon the upper ends of upwardly directed bristles when the back of the brush rests on the top of said abutment, and means operated by downward pressure of the back 'of the brush to cause the discharge of liquid from said outlet onto upper ends of the bristles.

3. In a device for dispensing liquid from a reservoir onto a tooth brush having its bristles directed upwardly, the combination of an upwardly facing abutment upon which the back of the brush may be placed to enable a downward thrust to beexerted thereon by the brush, a conduit having a downwardly-directed outlet above said upwardly facing abutment and so spaced laterally 'as to cause the outlowing liquid to fall on the bristles of the brush, and means operated by downward movement of said abutment to cause liquid to be released at said outlet.

4. In a device for dispensing liquid from a reservoir onto the bristles of a 'tooth brush, the combination of a head member including van abutment and a conduit having an outlet, said abutment and said outlet being spaced from and aligned with each other, and separated from each other by a space to receive a brush with'its back on said abutment and its bristles' toward said outlet, said conduit having a portion laterally 01T- set from said outlet and said abutment," and means to utilize pressure ofiI the brush Y'on said abutment to cause liquid yto ilow through'said conduit to said outlet to be discharged 'onto the bristles of the brush.

CLAUDE COOPER. CHARLES W. SHERMAN.

. CERTIFICATE 0E CORRECTION. Patent No. 2,285,14ILI. May I9, 19M.

CLAUDE COOPER, ET AL.

It is hereby Certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 2, second column,V line 6, Claim ll, after of insert --a Conduit having--g and that the said Letters Patent should be read with this correction therein that the same may Conform to the record of the Case in the Patent Office. signed and sealed this 50th day of June, A. D; 19m.

Henry Van Arsdale Acting Commissioner of Patents.

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