US2511723A - Dispenser closure for bottles - Google Patents

Description

June 13, 1950 L. L. LEWIS DISPENSER CLOSURE FOR BOTTLES 2 Sheets-Sheet 1 Filed Feb. 25, 1948 a wuvrflov Lesierli) ewis W,JM&

A Ziarzzeys June 13, 1950 L. L. LEWIS DISPENSER CLOSURE FOR BOTTLES Filed Feb. 25, 1948 I 1 i i 2 Sheets-Sheet 2 w g A V M lllllllllllllll I llllllllllll lfl llllllllllml 3mm L6JtIL ewiS Patented June 13 1950 DISPENSER CLOSURE. roe berries V Lester L. Lewis, Cabot, Pa.- Application February 25, 1948, Serial No, 10,380

bottles. flasks and the. like, which will permit the Withdrawal of the fluid contents from the bottle in measured amounts, and which. will render difficult the introduction of adulterants or refill material into the container.

The invention consists in the novel construction, arrangement and combinations of parts hereinafter more particularly described. and.

claimed. v

.Two sheets of drawings. accompany specification as part thereof, in which like reference characters indicate like parts throughout.

In the drawings:

Figure 1 is a fragmentary longitudinal cross section through the neck end of a bottle closed with the present measuring device, and illustrating the initial position of the device in the operation of withdrawing, the contents of the bottle;

Figure 2 is a similar cross section to Figure 1, illustrating the second step in the operation of withdrawing the contents of the bottle;

Figure 3 is a longitudinal cross section through the improved metering device;

Figure 4 is a longitudinal cross section partly in elevation showing a modified structure;

Figure 5 is a perspective view of the abutment member removed from the metering device; and

Figure 6 is an exploded perspective of the modified form of abutment member.

In accordance with the present invention, two cup-like members I and 2. each having one end closed or partially closed, and substantially cylindrical chambers, are associated by abutting their open ends against peripheral portions of a centralabutment member I4 which for this purpose is preferably formed with an annular rib l5 adapted to space the adjacent end portions of the cups I and 2, which may be conveniently cemented or otherwise secured thereto.

The abutment member I4 is provided with an axially positioned bore I6 and spaced around the bore I6 are a plurality of passages I8 through which the fluid contents of the bottle is adapted to pass. These outlet passages I8 are provided with flapper valves I9 mounted upon the outer face of the abutment member, and one orifice is 2 Claims; (01. 215-461 2 associated with an. inlet valve [1 to permit the admission. of air into the flask or bottle to replace the fluid as withdrawn.

In the formv shown in Figure 6,. a single disk va1ve. 2 I I is provided which. is guided with, respect to the abutment member M as by headed pin 23' and compression springs. 24-. With this type of. valve there is sufl'i'cientleakage of air to avoid the necessityior air inlet valve.

Theinnermost cup-like member 2 is provided with laterally disposed ports I'S. spaced sufficientiy above the bottom f2 to clear a piston .II 'sl'idable in the. cylindrical bore. of this" member when said piston H is in its innermost position, as illustrated in Figure 3-.

The piston II is associated with a piston rod. 1" which is threadedly associated with an extension tubular portion T which extends slidably through a bore 6 in the top or cap portion 3 of the cup-like member I, the upper end of the tube 1' being threadedly associated with a Y-shaped finger grip 9 having oppositely disposed arms III, both the finger grip 9 and the arms It being provided with converging bores which communicate with the bore of the tube I. The tube I is: provided with a lateral port 21 positioned with respect to the piston II so as to be exposed within the bore of cup member I only when the piston I I is in its innermost position, and as illustrated in Figure 3.

The head or cap portion 3' of cup 1 is exteriorly threaded to receive a cap 4 and a rubber gasket 8 is positioned between the top or cap 3 and the inner face of closure cap 4, surrounding tube 1 to make a tight sliding fit for this tube through the head of the device.

A compressible gasket 20 of rubber or the like is positioned around the cup members I and 2 so as to make a sealing fit with the neck of the bottle when these parts are inserted as a stopper in the usual manner.

In the modified form of the device illustrated in Figure 4, it is proposed making the unit in a single piece by stamping same from plastic or the like, thereby eliminating the separate abutment member I4 and forming the abutment I4 integral with the cylindrical structure which is stamped to provide axially aligned cylindrical chambers similar in all respects to those illustrated in Figure 3.

The operation of the device will be apparent from a consideration of Figures 1 and 2. To discharge fluid from the bottle, the bottle is inverted, as illustrated in Figure 1, with the piston II in its innermost position, in which posture .e: 3 it will be apparent that the liquid in the bottle will enter the innermost chamber through ports l3, thus filling that chamber. Thereupon, by grasping the hand discharge spouts l0 and pulling the piston II to its outermost position, the liquid will be forced from the innermost compartment through the orifices l8 in abutment f4 and against flapper valves I!) to fill the outermost chamber. It will be observed that in drawing the piston I I from its innermost to its outermost position, the port 2! in tubularpiston rod 1 will have been withdrawn at the very beginning of the stroke beyond the top or cap 3, thereby preventing any escape of liquid from the outer compartment during this operation. With the outer compartment filled with liquid, as illustrated in Figure 2, the piston I I will be again forced inwardly to its innermost position, thereby returning port 21 to communication with the outer chamber and permitting the fluid in said I outer chamber to escape through said port 21, the tubular piston rod 1 and the discharge spouts It). When this metered amount of the liquid has been thus drained from the outermost compartment, air can replace the liquid in the outermost compartment, and upon repetition of the cycle thus described, this air will be permitted to enter the bottle through the valve ll, thus replacing the liquid in the bottle.

The precise structure of the various parts can with axially aligned chambers separated by an abutment having valve controlled through passages, a piston slidable in the inne chamber, a piston rod extending slidably from the piston through the abutment to the exterior of the outer chamber, the outer portion of the piston rod being hollow and communicating with the interior of the outer chamber only when the piston is in its innermost position, the inner chamber having ports communicating with the interior of the: bottle,-said ports located to clear the piston in its innermost position.

2. Dispensing closure for bottles comprising,

'a stopper-like member adapted to seal the neck of the bottle, said member formed with axially aligned chambers separated by an abutment wall having valve controlled passages to permit entry of air into the inner chamber and the passage 'of'the fluid contents'of the bottle into the outer chamber, a piston slidable in the inner chamber having a rod extending slidably through the abutment and the outer wall of the outer chamber, the outer portion of the piston rod formed with a bore communicating through a lateral port with the interior of the outer chamber immediately adjacent the outer wall of said chamber when the piston is in its innermost position, the wall of the inner chamber formed with inlet p'orts located above the piston when in its innermost position.

' LESTER L. LEWIS.

- REFERENCES CITED UNITED STATES PATENTS Number Name Date 1,697,206 Roberts Jan. 1, 1929 l,il50,8 70 Featherstone Mar. 22, 1932

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