Appliances for Heating Liquids.
Year: 1896

page_text: PROVISIONAL SPECIFICATION.
Appliances for Heating Liquids.
GEORGE ERNEST SHERWIN, Central Works, Alma Street, Aston, Birmingham,
in the County of Warwick, Engineer do hereby declare the nature of this
invention to be as follows:-
My invention relates to that class of heating apparatus in which the heating of
the liquid is effected by causing this liquid to pass through a tube surrounded by
steam; this may be reversed, and the liquid to be heated may be on the outside of
tube, steam being contained within the tube. I employ a particular form of tube,
this having a series of corrugations formed around same in the manner of a screw or
spiral. I connect one end of this tube to a chamber containing the liquid to be
heated and the other end of this tube to a chamber into which the liquid enters
after having passed through the tube; between these two end chambers the tube
passes through a chamber containing the steam, the liquid is therefore heated when
it leaves the tube and enters the second end chamber."
Dated this Sixth day of January 1896.
GEORGE ERNEST SHERWIN,
GEORGE ERNEST SHERWIN Central Works, Alma Street, Aston Birmingham
in the County of Warwick, Engineer, 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:-
Figure 1 shows the peculiar form of tube employed, which consists of corru-
gations running round the tube in the form of a spiral or screw.
Figure 2 represents a form of heater employed for heating water and other
liquids. The water enters the apparatus at T, the flow being regulated by an
ordinary ball valve according to the height of water in chambers A and E, the ball
may be placed in either of these chambers. The water falls from valve T into
cold water chamber A, thence through the pipe B to the cold water chamber C
with which the lower ends of tubes communicate. These tubes D are surrounded
with steam which enters the chamber containing them at K, an outlet M being
provided for escape of waste water (condensed steam) from this chamber. The
water passing upwards through the tubes D enters the hot water chamber E in a
heated or boiling condition. This chamber E may be closed in such manner that
the water contained therein is at a pressure above that of the atmosphere, but. 1
prefer that this chamber should be sufficiently open that water therein contained is
not subject to any pressure beyond that of the atmosphere. I provide a scum
cock N at lowest point of heater through which all the water therein contained

page_text: may be run out; and other cocks at H through which hot water may be drawn
from chamber E.
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
1. The use of a tube corrugated in the form of a spiral or screw for heating
water and other liquids, the said tube being surrounded by steam, the liquids to be
heated being contained within the tube, the tubes having connection with cold
water chamber at one end, and hot water chamber at the other end.
2. In an apparatus in which water is heated by passing through tubes or coils
surrounded by steam, these tubes or coils communicating with a chamber at one
end from which the cold water passes into the tubes or coils, and at other end with
a chamber into which the heated water passes from the tubes or coils the use of a
ball valve for the regulation of the water supply, the ball being raised or lowered
by the water contained within either hot or cold water chamber.
Dated this Second day of October 1896.
GEORGE ERNEST SHERWIN.