An Appliance for Containing Jam, and for Enabling Any Desired. Quantity of the Contents to be Drawn Off at will.
Year: 1893

page_text: Date of Application, 9th Feb., 1893
Complete Specification Left, 7th Nov., 1893-Accepted, 16th Dec., 1893
PROVISIONAL SPECIFICATION.
An Appliance for Containing Jam, and for Enabling Any Desired.
Quantity of the Contents to be Drawn Off at will.
I, WILLIAM ROBERT DEACON, of 37 Chapel Street, East Stonehouse, in the
County of Devon, Grocer, do hereby declare the nature of this invention to be as
follows:-
This invention consists in an appliance designed mainly for use by vendors of
jam in retail.
The appliance consists of a vessel for containing jam and of means fitted to
such vessel whereby the contents can be drawn off in any desired quantity or
quantities.
The vessel for containing the jam is a jar of glass, stoneware, earthenware
or other suitable substance. It is provided towards the lower end with a draw-off
cock or valve.
.
In the cover of the vessel is fitted a flap valve capable of opening inwards only
and normally kept closed by the action of a spring. The aperture in the cover
which this valve controls affords communication between the vessel and a cylinder
surmounting the cover, in which cylinder is a closely fitting piston capable of
reciprocation, by means of a hand lever connected to the piston rod. At one side
of the cylinder and towards the lower end thereof is a valve capable of opening
inwards only. By reciprocating the piston in the cylinder air is admitted to the
cylinder and is compressed into the vessel containing the jam. By means of the
head of pressure thus obtained the jam is, on the draw-off cock being opened,
ejected there-through; the quantity being under the control of the operator of
the cock.
Dated this 23rd day of January 1893.
NICHOLAS WATTS,
Chartered Patent Agent."
COMPLETE SPECIFICATION.
An Appliance for Containing Jam, and for Enabling Any Desired
Quantity of the Contents to be Drawn Off at will.
I, WILLIAM ROBERT DEACON, of 37, Chapel Street, East Stonehouse, in the
County of Devon, Grocer, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:—
This invention consists in an appliance designed mainly for use by vendors of
jam in retail.
The appliance consists of a vessel for containing jam and of means fitted to
such vessel whereby the contents can be drawn off in any desired quantity or
quantities.
The vessel for containing the jam is a jar of glass, stoneware, earthenware or
other suitable substance. It is provided towards the lower end with a draw-off
cock or valve.
In the cover of the vessel is fitted a flap valve of india-rubber, leather or other
suitable material. This valve is capable of opening iuwards only and is normally
kept closed by the action of a spring. The aperture in the cover which this
valve controls affords communication between the vessel and a cylinder surmounting
the cover, in which cylinder is a closely fitting piston capable of reciprocation by

page_text: means of a hand lever connected to the piston rod. Fitted on the under face of
the piston are a pair of leather or rubber valves capable of opening downwards
only. In the cover of the cylinder are air inlets. Air passing through the inlets
is, by pumping, compressed in the vessel containing the jam. By means of the
head of pressure thus obtained the jam is, on the draw-off cock being opened,
expelled there-through; the quantity being under the control of the operator of
the cock.
In the accompanying sheet of drawings,
Fig. 1 represents in elevation my improved appliance for containing and
drawing off jam.
Fig. 2 is a vertical section taken at a right angle to Fig. 1.
The container a, of stoneware, glass, or other suitable substance, is closed at
top by a removable cover b made air-tight around the rim of the container. In
the cover is an aperture 6¹ over which is fitted a flap valve c of india-rubber,
leather or other suitable material. The valve c is capable of opening downwards
only. The flat spring a constantly tends to keep the valve c closed. The cover b
is surmounted by a cylinder d in which is a piston d¹ fitted with flap valves d'
of india-rubber, leather or other suitable material. The valves d' cover the
apertures d³ in the piston and are capable of opening downwards only. Springs d
constantly tend to keep the valves d³ closed. The piston rod d³ is connected to a
hand-lever de by which the piston is reciprocated. In the cover e of the cylinder
are air inlets e¹.
The container a is furnished with a draw-off cock f.
By operating the air pump surmounting the container a air is compressed in the
container and exerts a downward pressure on the jam contained therein. In each
downward stroke of the piston d' the air admitted below the piston through the
valves d² in the immediately previous up stroke, is forced through the valve c
into the container a. In each up stroke the valve c closes and the valves d' open,
admitting a fresh supply of air to the cylinder b. In this manner the jam in the
container a is kept under pressure and when the cock f is opened the jam is
expelled by the pressure. The quantity drawn off is regulated by the person
operating the cock.
Being thus kept under pressure the jam is preserved in good condition for an
increased length of time.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
An appliance for containing and preserving jam and enabling any desired
quantities to be drawn off, as desired; the said appliance consisting of a container
fitted towards the lower end with a draw-off cock and surmounted by an air pump
so arranged as to enable a head of air pressure to be created and maintained in
the container, substantially as hereinbefore described with reference to the
accompanying sheet of illustrative drawings.
Dated this 3rd day of November 1893.