US1640152A - Teat and valve for feeding bottles - Google Patents

Description

Aug. 23, 1927. 1,640,152

j w. c. INGRAM ET AL TEAT AND VALVE FOR FEEDING BOTTLES Filed Jan. 4, 1927 Fig. 9.

@gumi 1 W W W WWEWV Patented Aug. 23, 1927.

UNITED STATES PATENT OFFICE.

WILLIAM CONRAD INGRAM". AND ERNEST JAMES EVEREST, OF HACKNEY WICK,

LONDON, ENGLAND.

TEAT AND VALVE FOR FEEDING BOTTLES.

Application filed January 4, 1927, Serial-No. 158,939, and in Great Britain November 25, 1926.

The invention relates to that type of india rubber teats and valves for feeding bottles in which those parts which are stretched around the two open ends of the bottle are strengthened by means of an india rubber band, the main part of the teat and valve being formed by dipping a mould of the desired shape.

Although such teats and valves obtain a better grip of the bottle than teats which are merely made by dipping, there is a ten dency for them to split if stretched over the ends of a bottle having larger apertures than the bottles for which they are designed.

The object of the present invention is to overcome this defect and to provide teats and valves which will obtain even a better grip than the teats hitherto made.

According to the present invention the perforated closure device, whether in the form of a teat or valve, is strengthened around the neck portion thereof by means of an inner broad band of india rubber and a strengthenin strip of india rubber, of less width than the broad band, is located between this latter and the body of the closure device.

It will be understood that in use it is the broad band of india rubber which is in con tact with the neck of the bottle, and that the strip is around the exterior of the broad band, thereby strengthening the same.

The improved closure device may be made by various processes one of which is hereinafter described.

The invention is illustrated in the accompanying drawings in which:

Fig. 1 is an elevation of a mould showing the body of a teat thereon.

Fig. 2 is an elevation of a rod upon which the body of the teat is placed to enable subsequent operations to be carried into effect.

Fig. 3 is a sectional view taken through the axis of a finished teat.

Fig. A is an elevation of a mould showing the body of a valve thereon.

Fig. 5 is an elevation of a rod upon which the body of the valve is placed to enable subsequent operations to be carried into effect.

Fig. 6 is a sectional view taken through the axis of a finished valve.

Figs. 7 8 and 9 are detail views showing to a larger scale than Figs. 1 to 6, various sections of strengthening strips.

As shown in Fig. 1 a is the mould which is dipped as usual into india rubber solution a suflicient number of times to produce the desired coating 1) thereon to form the body of a teat. This body Z2 is then partlyis wound a broad strip a of india rubber which adheres to the strengthening strip and to the body Z). The rod 0 is then withdrawn from the completed teat and the vulcanization of this latter is completed in any usual manner. The teat is again turned inside out so that the broad strip of rubber 6 is in the interior of the body Z) when the teat is ready for use, as shown in Fig. 3. The strengthening strip d is then seen through the body 5 if this latter be made of transparent india rubber.

As shown in Figs. 2 and 3, the neck has been trimmed off as usual.

As shown in Fig. at, f is a. mould which is dipped a suitable number of times into india rubber solution to produce the desired coating 9 to form the body of a valve for a feeding bottle. This coating 9 is partly vulcanized upon the mould and is then stripped therefrom, but that part of it which is to grip the neck of the bottle is replaced upon the rod 0 without turning the body inside out, as shown in Fig. 5.

The lower part of the valve which is to grip the neck is coated with india rubber solution, and a strengthening strip cl is wound around the neck portion of the valve and is fixed thereto. The outer surface of the strip (l may likewise be coated with india rubber solution and the broad band of india rubber e is wound around the strip (Z and that part of the body forming the neck of the valve.

The valve thus completed is removed from the rod 0 and is finally fully vulcanized. The valve is then turned inside out as is usual, so that the pointed part it is within the upper part of the valve. This pointed part- 72. is either cut across or split at z' in known manner to produce a valve which will allow air lit) to enter the feeding bottle but will prevent escape of liquid therefrom.

It Will be understood that the strengthenin'g strip (Z. may vary in cross section, and in Fig. 7 there is shown to a larger scale, a strip which is rectangular in cross section, as shown in Figs. 2, 3, 5 and (3.

In Fig. 8 a strengthening strip (Z is shown Which has one flat side to adhere to the body of the teat, and one curved side to receive the broad band 6.

In Fig. 9 the strengthening strip (Z is in the form of a cord and is circular in cross section.

As teats and valves for feeding bottles are both made in the same manner, and as they both forni perforated closure devices, the generic term closure device is hereinafter used in the claims to include both articles.

hat We claim as our invention is 1. perforated closure device for a feed ing bottle having a body, inner broad band of india rubber, and a strengthening strip of india rubber of less Width than the said broad band and located between the broad band and the body of the closure de vice substantially as set "forth.

2. A perforated closure device for a feeding bottle having' a body made by dipping a mould into india rubber solution, an inner broad band of india rubber, and a strengtlr ening strip of india rubber located between the broad band and the body 0'! the closure device, substantially as set forth.

3. A perforated closure device for feed ing bottle having a body of transparent india rubber, an inner broad band of india rubber, and a strengthening strip of india rubber located between the broad band and the body of the closure device, substantially as set forth.

In Witness whereof We have hereunto set our hands.

WILLIAM CONRAD INGRAM. ERNEST JAMES EVEREST.

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