IMPROVEMENTS IN APPARATUS FOR BAKING, ALSO APPLICABLE TO HOT PRESSING AND TO OTHER HEATING AND TO COOLING PURPOSES
Year: 1868

page_text: LETTERS PATENT to Charles Brown, of the City of Dublin, for the
Invention of "IMPROVEMENTS IN APPARATUS FOR BAKING, ALSO APPLICABLE
TO HOT PRESSING AND TO OTHER HEATING AND TO COOLING PURPOSES."
Sealed the 17th July 1868, and dated the 24th April 1868.
PROVISIONAL SPECIFICATION left by the said Charles Brown at the
Office of the Commissioners of Patents, with his Petition, on the
24th April 1868.
I, CHARLES BROWN, of the City of Dublin, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN APPARATUS FOR BAKING,
ALSO APPLICABLE TO HOT PRESSING AND TO OTHER HEATING AND TO COOLING
PURPOSES," to be as follows:-
My Invention consists in constructing apparatus of two or more
plates or castings placed one above another, such plates or castings
having transverse internal channels or pipes, each channel or pipé
opening at each end into a longitudinal channel or pipe. One longi.
tudinal pipe forms the inlet and the other the outlet for a supply of
steam or other fluid. The plates are supported by collars or bosses
which are threaded internally- and are mounted on upright threaded

page_text: shafts or columns; the collars or bosses are each firmly secured to or
formed in one with a worm wheel or a bevel wheel, and these wheels
are geared into by corresponding worms or bevel wheels on transverse
shafts, of which there is one at each end of every plate. The two
transverse shafts are connected by chains or by gearing, so that when
one shaft is turned by a crank handle or otherwise the other shaft turns
equally and simultaneously, by these means the several plates can be
moved up or down to bring them nearer to or further from each
other as required; brackets carried from the plates to the transverse
shafts help to support the former. For baking, hot pressing, or
other heating purposes, steam or other heating medium is caused to
circulate through the channels or pipes of the plates, while for cooling
purposes cold water or other cooling medium is caused to circulate
through them. When I employ steam I prefer to enclose the
plates in an oven or brickwork built a few feet above the boiler and
to return the steam to the boiler after leaving the plates. In con-
structing the plates it will be well to carry the transverse channels the
whole width of the plates and to close their ends by screw plugs or
otherwise.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Charles Brown in the Great Seal Patent Office on
the 19th October 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHARLES
BROWN, of the City of Dublin, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-fourth day of April, in the year
of our Lord One thousand eight hundred and sixty-eight, in the thirty-
first year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Charles Brown, Her special licence that
I, the said Charles Brown, my executors, administrators, and assigns,
or such others as I, the said Charles Brown, my executors, adminis-
trators, and assigns, should at any time agree with, and no others,
from time to time and at all times thereafter during the term therein
expressed, should and lawfully might make, use, exercise, and vend,

page_text: within the United Kingdom of Great Britain and Ireland, the Channel
Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN APPARATUS
FOR BAKING, ALSO APPLICABLE TO HOT PRESSING AND TO OTHER HEATING AND TO
COOLING PURPOSES," upon the condition (amongst others) that I, the said
Charles Brown, my executors or administrators, by an instrument in
writing under my, or their, or one of their hands and seals, should par-
ticularly describe and ascertain the nature of the said Invention, and in
what manner the same was to be performed, and cause the same to be
filed in the Great Seal Patent Office within six calendar months next
and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Charles Brown, do hereby declare
the nature of my said Invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and by
the following statement thereof, reference being had to the Drawings
hereunto annexed, that is to say :-
My Invention consists in constructing apparatus of two or more plates
or castings placed one above another, such plates or castings having trans-
verse internal channels or pipes, each channel or pipe opening at each end
into a longitudinal channel or pipe. One longitudinal pipe forms the
inlet and the other the outlet for a supply of steam or other fluid. The
plates are supported by collars or bosses which are threaded internally
and are mounted on upright threaded shafts or columns; the collars or
bosses are each firmly secured to or formed in one with a worm wheel
or a bevel wheel, and these wheels are geared into by corresponding
worms or bevel wheels on transverse shafts, of which there is one at
each end of every plate. The two transverse shafts are connected by
chains or by gearing, so that when one shaft is turned by a crank handle
or otherwise the other shaft turns equally and simultaneously, by these
means the several plates can be moved up or down to bring them
nearer to or farther from each other as required; brackets carried from
the plates to the transverse shafts help to support the shafts.
baking, hot pressing, or other heating purposes, steam or other heating
medium is caused to circulate through the channels or pipes of the
plates, while for cooling purposes cold water or other cooling medium
is caused to circulate through them. When I employ steam I prefer
to enclose the plates in an oven or brickwork built a few feet above
the boiler, and to return the steam to the boiler after leaving the plates.
In constructing the plates it will be well to carry the transverse channels
For

page_text: the whole width of the plates and to close their ends by screw plugs or
otherwise.
In the accompanying Drawings Figure 1 is a plan; Figure 2 a front
elevation, and Figure 3, a side elevation of an apparatus constructed
according to my Invention.
a, a, are a series of plates or castings placed one above another and
formed with transverse internal channels or pipes b, b, which extend
the entire width of the plates a, a, but are closed at the extremities
by screw plugs c, c; d is a longitudinal channel or pipe at one side of
each plate, and e is a similar channel at the other side of cach plate;
the channels b, b, open at their respective ends into these two longi-
tudinal channels d and e; the channel d is in communication by a
connection with a steam supply pipe g, while the channel e is in
communication by a connection with a pipe i leading preferably back
to the boiler. The plates a, a, are supported by collars or bosses k, k,
which are threaded internally and mounted on upright threaded
shafts 1,1; the collars k, k, are firmly secured to or formed in a piece
with worm wheels m, m, which are geared into by corresponding
worms n, n, on transverse shafts o, o, one at each end of every plate a; the
two shafts o, o, of each plate are connected by a chain p, so that when
one shaft o is turned by a handle applied to the square portion q, the
shaft at the opposite end of the plate turns equally and simultaneously.
The several plates a, a, may thus be moved to or from each other as
required while their parallelism is preserved; r, r, are brackets carried
from the plates a, a, to support the shafts o, o. The steam supplied
by the pipe to the longitudinal channel d of each plate passes through
all the transverse channels 6, 6, of that plate to the opposite longitudinal
channel e from which it proceeds to the pipe i and thence back to the
boiler. The plates a, a, as well as the chamber or oven in which they
are fitted thus become uniformly heated, and the baking or heating of
articles or matters placed on or between the plates is therefore advan-
tageously effected. I do not limit myself to steam as the heating
medium, as hot air or other heating fluid may be caused to circulate
through the plates, and when the apparatus is intended for cooling
purposes cold water or other cooling medium is caused to circulate
through them.
Figure 4 represents a mechanical arrangement for turning the
shafts o, o, for the purpose of moving the plates a, a, up or down for.

page_text: hot pressing or otherwise. This arrangement consists of a horizontal
shafts driven from the engine or otherwise, and carrying bevil
wheels t, t, gearing into another wheel a for reversing the motion;
the shafts carries a worm which gears into a worm wheel on a
vertical shaft wo; this shaft carries a wheel gearing into another
wheel y on a threaded shaft z. As the bevel gearing transmits the
motion in one direction or the other the shaft z turns so as to cause
the frame a to move up or down as the case may be, while a sleeve b¹
connects the shaft & with the transverse shaft o of the hot plate. By
disconnecting the shafts & and o and throwing the wheels x and y out of
gear by a handle c¹ the frame a¹ can be moved up or down to another of
the transverse shafts o.
Among the purposes for which my apparatus may be employed, in
addition to baking and hot and cold pressing, I may mention tobacco
stoving and pressing and stereotype founding. The number of the
plates employed will vary according to the purpose to which they are
applied, and other arrangements than those described for moving the
plates up and down might easily be adapted for the purpose.
And having now described the nature of my said Invention, and
in what manner the same is to be performed, I declare that I claim
as my "Improvements in Apparatus for Baking, also applicable to
Hot Pressing and to other Heating and to Cooling Purposes,"-
First. The general arrangement or combination of parts of apparatus,
substantially as herein-before described and represented in the accom-
panying Drawings.
Second. The construction and employment of plates or castings formed
with channels or pipes, substantially as and for the purpose herein-before
described and represented in the accompanying Drawings.
In witness whereof, I, the said Charles Brown, have hereunto set
my hand and seal, this Seventeenth day of October, One thousand