US 2512448 A
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June 20, 1950 A. J. l-.LvrTERs/ALJ; 2,512,448
RUBBER HOT-WATER BTTLE Filed Nov. 16, 1946 Alfred Jl Tmev'sall 2 Invehfov Patented June 20, 1950 I UNITED STATES PATE-NT OFFICE RUBBER HOT-WATER BQTTLE Alfred Joseph Tattersall, Preston, England Application November 16, 1946, Serial No. 710,365
In Great Britain June 4, 1946` 8 Claims. (Cl. 150-2.1)
It is a common experience that, during the filling of a rubber hot-water bottle with hot water, the bottle belches out hot water and steam, due inter yalia to the ingoing water closing the inlet orice vthrough which air and steam need to escape. It is the object of this invention to eliminate such belching.
According to the invention a rubber hot-water bottle having a funnel-like iiller surrounding the inlet orifice has the inner face of such filler formed with upstanding ribs, elongated projections or the like designed to give t the ingoing water a gyratory motion and thereby to produce within the filler and orice a vortex through which steam and air can escape freely without any undesirable belching.
Usually the fillers of rubber hot-water bottles are of a laterally-attened or elliptical shape in plan View, with a flat bottom in which is formed the threaded orice for the closure plug.
According to a further Afeature of the present invention, such flat bottom 'is' eliminated, the sloping sides of the ller, with the raised ribs thereon, being continued substantially to the periphery of the inlet o riiice which is screw-threaded at its lower part to receive the closure plug, and has a shoulder at the lower part on which the latter s eats.
The ribs, elongated'projections or the like may be of triangular section and are directed spirally, as viewed from the top oi" the filler.
In the accompanying drawing:
Fig. 1 is a plan view of an oval hot-water bottle .filler embodying the present invention and Fig. 2 is a sectional'side elevation of the same.
In the construction illustrated, the invention is applied to a known form of rubber hot-water bottle indicated at a having a restricted neck b in which is engaged a rigid bush c having the inlet orice d formed therein. After this bush c has been pushed into position, it may be effectively secured in the usual manner by binding the neck externally with wire, as at e, and subsequently protecting the wire binding with a strip of adhesive tape j.
The walls of the bottle a are continued, integrally or otherwise, above the neck b to provide a funnel-like iiller g which, as shown, is of oval shape in plan view, but may equally well be circular. One side of this filler may be provided with an apertured suspension tab h.
On the inner face of the ller g are moulded a plurality of spirally-arranged upstanding ribs i (say six in number) which curve in a clockwise direction from the top to the bottom of the ller.
It will be appreciated that when hot water is poured into vthe filler, these ribs i causeA itto swirl with a downward vortic'al motion which, as the water reaches the mouth of the inlet orifice d causes it to travel around the surface of the latter, leaving a clear central space through which steam and air can escape from the interior of the bottle a Without any dangerous or inconvenient belching.
Instead of the bottom of the ller cavity (i. e. the upper face of the bush c) rbeing substantially flat, as is usual, it is shaped concavely ati to continue the slope of the iiller walls down to the periphery of the orifice d and thus avoid any obstruction tothe vortical motion of the ingoing water.
Ribs or projections lc corresponding to those on the filler walls may be moulded on the face y of the bush c and be aligned with the filler ribs i, which latter may thus be continued to the edge of the orice d if desired.
Alternatively the ribs may terminate a short distance from thejorice edge, as shown, so as not to obstruct the insertion of the closure plug when the latter is of the known type having a projectinglip around the top.
The inlet orifice d may be screw-threaded in the usual manner and may have a shoulder Z at its lower end on which the plug seats. y
It is of course, conceivable that the walls of the inlet orice d may be made integral with those of the iiller g, in which case each rib would ,be in one piece.
lateral triangle with sides about 1/8' inch long.
The inclination of the ribs, with reference to a plane perpendicular to the axis of the orifice d may be approximately 45 degrees at the mouth of the ller and become progressively less towards the lower ends of the ribs, which latter may be spaced equally around the orifice d as shown. The angle and pitch of the ribs, may however be varied within wide limits.
If desired, the ribs z' may run in a contraclockwise direction, but the clock-wise arrangement is preferred as it conforms to the arrangement of the screw thread in the inlet orice.
Instead of the ribs z' being formed as raised parts on a ller wall of uniform thickness, there may be corresponding spiral grooves in the outer face of the ller, to provide a, more or less constant thickness of rubber at all points.
Obviously, the continuous ribs i may be replaced by elongated projections of any suitable section and inclination which are so arranged as to produce the desired guiding action on the ingoing water.
What I claim is:
l. In combination, a rubber hot-water bottle, a funnel-like filler integral therewith and having at its lower end the inlet orifice of said bottle and a plurality of upstanding, elongated proj ections extending down the inner face of said filler, said projections being spirally arranged to give the ingoing water a gyratory motion and to proextending down the inner face of-said funnel vsubstantially to the periphery ef saidiorifice, said projections being spirally arranged to give the ingoing water agyratory motion .and to produce within said filler and orifice a, vortex through vwhich steamand air can escape freely from said bottle.
3. In combination, a rubber hot-water bottle, a funnel-like ller. integral therewith and having at its lower end the inlet orifice of said bottle yand a plurality of upstanding elongated projections oftriangular cross-section extending down the inner face of said 'llen said projections being spirally arranged to give' the ingoing Water a gyratory motion and to produce within said filler and orifice a Vortex through which steam and air can escape freely from said bottle.
4. In combination, a 'rubber hot-water bottle, a funnel-like ller integral therewith and having at its lower end the inlet orifice of said bottle and a plurality of upstanding projections extending spirally down the inner face of said iiller, a bush constituting said orifice, the `upper face of said bush being shaped concavely to continue the slope of said funnel to the periphery Aof said orifice,` `said projections being arranged to give the ingoing water a gyratory motion and. to produce Within said ller and orifice a vortex through which steam and air can escape freely from said bottle.
5. In combination, a rubber hot-water bottle, a funnel-like filler integral therewith and having at' its lower end the inlet oriiice of said bottle, said inlet orifice being screw-threaded to receive a closure plug and a plurality of upstanding ribs extending spirally down the inner face of said filler and adapted to produce within the latter and said orifice a Vortical motion of the ingoing water, the direction of the spiral arrangement of said ribs being clockwise, to conform to the screw-thread in said oriiice.
6.'In combination, a rubber hot-water bottle, a funnel-like ller integral therewith and having at its lower end the inlet oriiice of said bottle and a plurality of upstanding ribs extending spirally down the inner face of said filler and adapted to produce within the latter and said orifice a vertical motion of the ingoing water, the inclination of said ribs, with reference to a plane perpendicular to the axis of said oriiice, diminishing progressively from the upper to the lower ends of said ribs.
'7.` In combination, .a rubber hot-water bottle,
a funnel-like ller integral therewith and having at'its lower end the inlet orifice of said bottle and a plurality of upstanding ribs extending spirally-down the inner face of said filler and adapted to produce within the latter and said oriiice a vortical motion of the ingoing water, the inclination ofsaid ribs, with reference to a plane-perpendicular to the axis of said orifice. being about 45 degrees at the top of said ller and Vbecoming less and less towards the lower Vends of the ribs.
8. In combination, a rubber hot-water bottle,
.a vfunnel-like ller integral therewith and having Within. Said filler and orice .a vortex through v which steam and air can escape freelyfrom saidbottle, additional projections on said bush face alined. with said iiller projections, the latter extending to the edge of said orice.
ALFRED JOSEPH TATTERSALL.
REFERENCES CITED The follow-ing references are of record in the ie of this patent:
UNITED STATES PATENTS Number Name Date 1,410,237 Baldwin Mar. 21, 1922 2,272,481 Rinkes et al Feb. 10, 1942