Improvements in Apparatus for Supplying Steam at Low Pressure or Hot Water for the Manufacture of Vienna Bread or other purposes.
Year: 1892

page_text: Date of Application, 26th Sept., 1892'
Complete Specification Left, 26th June, 1893-Accepted, 29th July, 1893
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Supplying Steam at Low Pressure
or Hot Water for the Manufacture of Vienna Bread or other
purposes.
We, JOSEPH ALLEN BAKER, WILLIAM KING BAKER, and GEORGE SAMUEL
BAKER, all of 58 City Road in the City of London, Engineers, do hereby declare
the nature of this invention to be as follows
This invention relates to apparatus specially applicable for supplying steam at
low pressure for the manufacture of Vienna bread but although it is herein described
only as applied to that industry it is to be understood that it may be used wherever
low pressure steam and hot water may be necessary.
The apparatus consists of a boiler which may conveniently he built into the
brickwork of a baker's oven so as to be flush with the front face of it and which is
provided with an ordinary water gauge fitted with the usual three-cocks the lowest
serving to blow off water from the boiler as hereinafter described. The boiler is
connected by flow and return pipes with a circulating cistern which is supplied with
water from a small tank provided with a ball-cock or equivalent.
The flow pipe is provided with a three-way cock to the branch of which is fitted
the steam supply pipe on which are fitted an air-inlet cock and a safety valve
weighted or adjusted to suit the height of the circulating cistern to admit of the
steam escaping at preferably a somewhat lower pressure than that of the water in
the flow and return pipes.
The return pipe is fitted with a cock the plug of which is formed with a passage
for establishing unrestricted communication between the circulating cistern and
boiler and with a smaller passage which may be of th inch diameter or more or
less to enable the water to pass from the circulating cistern to the boiler at a very
slow rate.
When the before described apparatus is required for use as an ordinary hot water
circulating system the cocks in the flow and return pipes are both turned so as to
establish unrestricted communication between the circulating cistern and boiler the
connection between the steam supply pipe and hot water flow pipe being by such
adjustment shut off by the three-way cock.
Should it then be desired to generate and supply steam at low pressure the
return-pipe-cock is turned so as to completely stop the passage of water through
said return pipe and the three-way cock is turned so as to place the boiler in direct
communication with the steam supply pipe. The air-inlet cock in the steam supply
pipe and the lowest of the water gauge cocks are then opened so that the level of
water in the boiler may be lowered to the required height, when the water gauge
cock is again closed.
The return-pipe-cock is then adjusted so as to admit of the passage of water only
through the smaller of its two openings so that the water may be supplied to the
boiler at about the same rate at which it is evaporated. The water supply to the
boiler may however be augmented at any time by turning the return-pipe-cock
full on.
Dated this 26th day of September 1900
W. P. THOMPSON & BOULT,
Agents for the Applicants.

page_text: COMPLETE SPECIFICATION.
Improvements in Apparatus for Supplying Steam at Low Pressure
or Hot Water for the Manufacture of Vienna Bread or other
purposes.
We, JOSEPH ALLEN BAKER, WILLIAM KING BAKER, and GEORGE SAMUEL
BAKER, all of 58 City Road, in the City of London, Engineers, do hereby declare
the nature of this invention and in what manner the same is to be performed to he
particularly described and ascertained in and by the following statement:-
This invention relates to apparatus specially applicable for supplying steam at
low pressure for the manufacture of Vienna bread, but although it is herein
described only as applied to that industry, it is to be understood that it may be used
wherever low pressure steam and hot water may be necessary.
The invention will be best understood by reference to the accompanying drawings
in which
Figure 1 is a diagram representing apparatus constructed according to our
invention.
Figures 2, 3 and 4, and 5 and are sections of two of the cocks employed
in the apparatus showing them arranged for different operations as hereinafter
described.
Like letters indicate like parts throughout the drawings.
The apparatus as shown in Figure 1 consists of a boiler A which may
conveniently be built into the brickwork of a baker's oven so as to be flush with
the front face of it and which is provided with an ordinary water gauge B fitted
with the usual three cocks B1 B2 B33 the lowest (B3) serving to blow off water from
the boiler A as hereinafter described. The boiler A. is connected by flow and
return pipes CD with a circulating cistern E which is supplied with water from a
small tank (not shown in the drawing) provided with a ball-cock or equivalent.
The flow pipe C is provided with a three-way cock F to the branch of which
is fitted the steam supply pipe G on which are fitted an air-inlet cock H and a
safety valve I weighted or adjusted to suit the height of the circulating cistern E to
admit of the steam escaping at preferably a somewhat lower pressure than that of
the water in the flow and return pipes C and D.
The return pipe D is fitted with a cock J the plug J¹ of which is formed with a
passage J2 for establishing unrestricted communication between the circulating
cistern E and boiler A and preferably with a smaller passage J³ which may be
of th inch diameter or more or less to enable the water to pass from the circulating
cistern E to the boiler A at a very slow rate. The barrel of the cock J may be
formed with a recess J' so that a clear passage will be provided when the cock is
adjusted in the manner shown in Figure 4 as hereinafter described.
When the beforedescribed apparatus is required for use as an ordinary hot-water
circulating system the plug F of cock F in the flow pipe C is turned to the position
shown in Figure 5 and that of the cock J of the return pipe D to the position in
which it is shown in Figure 2, so as to establish unrestricted communication between
the circulating cistern E and boiler A the connection between the steam supply
pipe G and hot-water flow pipe C being by such adjustment shut off by the three-
way cock by reason of the port or passage F³ being turned away from it. The hot
water may be drawn from the cistern E by means of any desired arrangement
of pipes.
Should it then be desired to generate and supply steam at low pressure the
plug J of return-pipe-cock J is turned to the position in which it is shown in
Figure 3 so as to completely stop the passage of water through said return pipe and
the plug F2 of the three-way cock F is turned to the position shown in Figure 6 so
as to place the boiler A in direct communication with the steam supply pipe G.
The air-inlet cock H in the steam supply pipe G and the water gauge cock B³ are

page_text: then opened so that the level of water in the boiler A may be lowered to the
required height, when the water gauge cock B³ is again closed.
The plug J of the return-pipe-cock J is then turned to the position shown
in Figure 4 so as to admit of the passage of water only through the smaller
opening J3 so that the water may be supplied to the boiler A at about the same rate
at which it is evaporated. The water supply to the boiler A. may however be
augmented at any time by turning the return-pipe-cock J full on.
During the time that the apparatus is being used in this last described manner for
generating steam the hot-water contained in the cistern E is sufficient for all
ordinary requirements.
It will be obvious that instead of the cock J being provided with the special
opening or passage J it may be of ordinary construction the necessary reduction in
the supply of water to the boiler when it is used for generating steam being
obtained by turning the plug so as to suitably restrict the passage through the
cock.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is ;-
1. Apparatus for the supply of either steam or hot water or both consisting of a
boiler circulating cistern How and return pipes connecting the boiler and cistern,
steam supply pipe connected with the flow pipe by means of a three-way cock,
air-inlet cock, safety-valve, water-gauge and a cock in the return pipe for controlling
the supply of water to the boiler substantially as described and illustrated in the
accompanying drawings.
2. The combination and arrangement of parts constituting the complete apparatus
for the supply of either steam or hot water or both substantially as described and
illustrated in the accompanying drawings.
Dated this 26th day of June 1893.
JOSEPH ALLEN BAKER,
Per pro Wm. King Baker.
WILLIAM KING BAKER.
GEORGE SAMUEL BAKER,
Per pro Wm. King Baker.
W. P. Thompson & Boult,
Agents for the Applicants.