Hot water bottle of rubber

Dec. 17, 1935.

2,024,908

A. BLUM

HOT WATER BOTTLE OF RUBBER Filed Aug. 31, 1933

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Patented Dec. 17, 1935

2,024,908

UNITED STATES PATENT OFFICE

2,024,908 HOT WATER BOTTLE OF RUBBER Adolf Blum, Vienna, Austria Application August 31, 1933, Serial No. 687,677 In Austria August 12, 1933 1 Claim. (Cl. 150—1)

This invention relates to improvements in hot water bottles.

The known hot water bottles are open to the objection that, when completely filled or slightly 5 inclined when in use the bearing walls entirely or partly bulge, thereby preventing the bottle from resting flat on the body.

The invention relates to a hot water bottle in which this objection is overcome in that the 10 bearing walls of the bottle are connected by yieldable walls which, when the bottle is full, act as spacing elements and thus prevent the water bottle from bulging.

A further feature of the invention consists 15 in constructing the hot water bottle in such a manner that it retains its curved shape even in filled condition. For this purpose the narrow side walls of the bottle are formed by curved ribs or reinforced strips.

An embodiment of the invention is illustrated by way of example in the accompanying drawing in which—

Fig. 1 shows the hot water bottle in perspective view.

Fig. 2 is a longitudinal section through the bottle in empty condition.

Fig. 3 is a cross section through the empty bottle.

Fig. 4 is a longitudinal section through the 30 bottle in filled condition.

In the example illustrated the bearing walls of the hot water bottle are subdivided into three compartments by two yieldable strips 3, 3' extending in the longitudinal direction of the 35 bottle, which compartments can be filled at the same time and jointly by a funnel O'. Each of the compartments is subdivided into three sections by yieldable strips 4, 4', 5, 5' and 6, 6' extending in the transverse direction of the ⁴⁰ bottle. These transverse strips do not extend right up to the longitudinal strips 3, 3' so that apertures 4”, 5” and 6 remain between the transverse and longitudinal strips for the passage of the liquid from one sub compartment or ⁴⁵ section into the sub compartment or section situated thereunder.

When the bottle is in empty condition, the bearing walls I and 2, as shown in Figs. 2 and 3, lie close together, and in filled condition (Fig. 4) the water is uniformly distributed in all compartments of the hot water bottle and 5 the foldable strip partitions are extended, so that they act as spacing elements and prevent a further bulging of the walls of the bottle.

Strips of elastic and expansible material may be provided in any suitable arrangement instead 10 of the foldable partitions.

The narrow side walls of the hot water bottle are formed of curved ribs or of reinforced strips Ί, T by means of which a curved shaps is imparted to the bottle and maintained when the 15 bottle is in more or less filled condition. The hot water bottle may evidently also be of curved shape in the transverse direction. In this instance the transverse narrow sides are formed by correspondingly curved strips or ribs. ²⁰The remaining parts of the bottle are formed in known manner. The filling funnel 8' can be tightly closed by a screw stopper 8. Moreover rubber lugs are formed’ at suitable points on the sidewalls and serve for attaching bands, belts ²⁵and the like by means of which the hot water bottle may be fixed to the body in longitudinal or transverse direction as required.