Year: 1896

page_text: I, HUGH MANSFIELD ROBINSON, L.L.D., of 3, Harcourt Buildings, Temple, in the
City of London, Solicitor, do hereby declare the nature of this invention to be as
follows:-
My invention relates to hot water supply apparatus of the kind described in the
Specification of my former Patent No. 19695 of 1895 and has for its object to provide
means, (especially in machines for giving a quantity of water in exchange for a coin)
whereby the heat of the water delivered may be at the required temperature
notwithstanding successive withdrawals and the consequent cooling of the water in the
hot water reservoir.
According to my invention I combine with the hot water tank or reservoir a second
and smaller reservoir or cistern (which in the case of a coin freed delivering machine
is the measuring tank) which is enclosed in an insulating jacket and has the delivery
cock connected to it and is supplied with water from the main reservoir.
The pipe which conducts the steam from the vapourizing coil and the receiver is
led through the second reservoir before it enters the main reservoir.
With this arrangement the relatively small body of water is first acted upon by the
steam before it is cooled or condensed by passing through the coil in the larger body
of water and as the second tank is insulated the heat which the water absorbs from
the steam is conserved.
In order to prevent any steam generated in the second reservoir from forcing the
water therefrom back into the main reservoir I provide a relief pipe which connects
the top of the second reservoir with the space at the top of the main reservoir. This
relief pipe also serves for the admission of air when withdrawing the contents of the
second reservoir.
I, HUGH MANSFIELD ROBINSON, L.L.D., of 3, Harcourt Buildings, Temple, in the
City of London, Solicitor, do hereby declare the nature of this invention and in what
[Price 8d.]

page_text: manner the same is to be performed, to be particularly described and ascertained in
and by the following statement:-
My invention relates to hot water supply apparatus of the kind described in the
Specification of my former Patent No. 19695 of 1895 and has for its object to provide
means, (especially in machines for giving a quantity of water in exchange for a coin)
whereby the heat of the water delivered may be at the required temperature
notwithstanding successive withdrawals and the consequent cooling of the water in
the hot water reservoir.
According to my invention I combine with the hot water tank or reservoir a second
and smaller reservoir or cistern (which in the case of a coin freed delivering machine
is the measuring tank) which is enclosed in an insulating jacket and has the delivery
cock connected to it and is supplied with water from the main reservoir.
The pipe which conducts the steam from the vapourizing coil and the receiver is
led through this second reservoir before it enters the main reservoir, so that the
relatively small body of water in this second reservoir is first acted upon by the steam
before it is cooled or condensed by passing through the coil in the larger body of
water and as the second tank is insulated the heat which the water absorbs from the
steam is conserved.
In order to prevent any steam generated in the second reservoir from forcing the
water therefrom back into the main reservoir I provide a relief pipe which connects
the top of the second reservoir with the space at the top of the main reservoir. This
relief pipe also serves for the admission of air when withdrawing the contents of the
second reservoir.
To enable my invention to be fully understood I will describe the same by reference
to the accompanying drawing, in which :-
Figure is a side elevation of so much of a hot water supply apparatus as is
necessary to illustrate my invention; and,
Figure 2 is an elevation of the same looking in the direction of the arrow
Figure 1.
a is the hot water tank or reservoir, b is the small or measuring tank, c is the
connecting pipe between the tanks a and b, d is the delivery pipe and e is the cock
for controlling communication between the tanks a and b and between the tank band
the delivery pipe d'; all the said parts being arranged in the manner described in the
specification before referred to.
f is the pipe through which the steam is led to the heating coil g within the hot
water tank a.
According to my present invention this pipe f instead of passing directly to the
coil g in the tank a passes through the measuring tank b, as clearly shewn in the
drawing, the portion of the pipe f within the said measuring tank being enlarged to
afford a relatively large amount of heating surface.
In order that the steam may pass without bindrance to the pipe in the cistern b
the automatic safety valve h, which in the arrangement described in the said former
specification was placed upon the pipe f before the latter entered the tanks, is now
placed upon the said pipe so that it does not check the steam until after the latter
has passed through the tanks a and b whereby a constant condensation is taking place
within the portions of the pipe f within the tanks instead of an intermittent
condensation as was the case when the valve h was placed to check the steam outside
the tanks, the temperature of the said portions of the pipe f being now in practice
always above boiling point. Instead of allowing the water of condensation from the
coil g and pipe f to flow into the tank a I have in the drawing represented the
lowermost end of the coil as being extended to the outside of the tank a where it is
provided with a cock i. j is the relief pipe which connects the tops of the two tanks
or reservoirs to prevent any steam which might be generated in the second reservoir
from forcing the water back into the main reservoir and also for admitting air when

page_text: water is drawn off. The top of the main reservoir is open to the atmosphere through
a pipe k as described in the specification of iny said former patent.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is :-
1. In a hot water supply apparatus of the kind herein before referred to wherein two
tanks are employed one of which serves as a store tank whilst the other serves as the
tank from which the water is drawn, passing the steam heating pipe through the
smaller tank so that the steam heats the water in the latter before it enters
the heating coil in the larger tank, substantially as described.
2. In a hot water supply apparatus of the kind referred to in the preceding
claiming clause, the arrangement in combination with the steam supply pipe of an
automatic valve arranged in the steam pipe at a point beyond the portion which
extends through the tanks, substantially as described.
Dated this 21st day of July 1897
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.