IMPROVEMENTS IN THE AUTOMATIC REGULATION OF HEAT IN KILNS, AIR-CHAMBERS, AND VESSELS CONTAINING LIQUIDS." PROVISIONAL SPECIFICATION
Year: 1881

page_text: LETTERS PATENT to Alfred Savill Tomkins, Frederic Michell Courage, and
Frank Arthur Cracknall, of 61, Mark Lane, London, for an Invention of
"IMPROVEMENTS IN THE AUTOMATIC REGULATION OF HEAT IN KILNS,
AIR-CHAMBERS, AND VESSELS CONTAINING LIQUIDS."
PROVISIONAL SPECIFICATION left by the said Alfred Savill Tomkins,
Frederic Michell Courage, and Frank Arthur Cracknall at the Office of the
Commissioners of Patents on the 28th March 1881.
ALFRED SAVILI. TOMKINS, FREDERIC MICHELL COURAGE, and FRANK ARTHUR
CRACKNALL, of 61, Mark Lane, London. "IMPROVEMENTS IN THE AUTOMATIC
REGULATION OF HEAT IN KILNS, AIR-CHAMBERS, AND VESSELS CONTAINING
LIQUIDS."
A coil, bulb, or column of mercury or other liquid is connected with a receptacle
covered with india rubber, in which the mercury or liquid rises or falls on expansion
or contraction, and the india-rubber in rising or falling opens or shuts a valve or
tap in connection with a flue or air channel, or will turn off a tap if the heat be
generated by gas. The motive power may also be attained by allowing the mercury
or liquid to discharge itself on expansion through a siphon into a receptacle which,
by the weight introduced, upsets the balance of a beam, the mercury or liquid
returning to the coil, bulb, or column by the action of the siphon as the temperature
falls, bringing back the beam to its original position.
The advantages of this Invention will be the attainment of regular temperature
in kilns, rooms, air chambers, or liquids, and that it can be applied readily owing
to its very simple action.
Having now described the nature of our said Invention, and in what manner
the same is to be performed, we declare that we do not confine ourselves to the
precise details herein specified, as the same may be varied without departing from
the nature of the said Invention, but what we claim and wish to secure is, the so
forming, arranging, combining, and constructing the said parts or apparatus
constituting our Invention for improvements in the automatic regulation of heat
in kilns, air chambers, and vessels containing liquids, substantially as set forth.

page_text: SPECIFICATION in pursuance of the conditions of the Letters. Patent filed
by the said Alfred Savill Tomkins, Frederic Michell Courage, and Frank
Arthur Cracknall in the Great Seal Patent Office on the. 12th September
1881.
ALFRED SAVILL TOMKINS, FREDERIC MICHELL COURAGE, and FRANK ARTHUR
CRACKNALL, of 61, Mark Lane, London, in the County of Middlesex, Malt-
factors. "IMPROVEMENTS IN THE AUTOMATIC, REGULATION OF HEAT IN KILNS,
AIR-CHAMBERS, AND VESSELS CONTAINING LIQUIDS."
A coil, bulb, or column of mercury or other liquid is connected with a receptacle
covered with india rubber in which, the mercury or liquid rises or falls on expansion
or contraction, and the india rubber in rising or falling opens or shuts a valve or
tap in connection with a flue or air channel, or will turn off a tap if the heat be
generated by gas, see Figure 1 in Drawings annexed. The motive power may also
be attained by allowing the mercury or liquid to discharge itself on expansion
through a siphon, see Figure 3, or a tube, see Figure 4, into a receptacle, which, by.
the weight introduced, upsets the balance of the beam (see Fig. 2 and Fig. 4), or
turns a wheel over which a chain or rope passes (see Fig. 3). The mercury or
liquid returning to the coil, bulb, or column, by the action of the siphon or by
contraction as the temperature falls, bringing back the beam or wheel to its original
position.
The advantages of this Invention will be the attainment of regular temperature
in kilns, rooms, air chambers, or liquids, and it will limit the fuel used to the
production of the heat required, and that it can be applied readily owing to its
very simple action.
Having now described the nature of our said Invention, and in what manner
the same is to be performed, we declare that we do not confine ourselves to the
precise details herein specified, as the same may be varied without departing from
the nature of the said Invention, but what we claim and wish to secure is the so
forming, arranging, combining, and constructing the said parts or apparatus
constituting our Invention for improvements in the automatic regulation of heat
in kilns, airchambers, and vessels containing liquids, substantially as set forth.
In witness whereof, we, the said Alfred Savill Tomkins, Frederic Michell
Courage, and Frank Arthur Cracknall, hereunto set our hands and seals,
this Twelfth day of September, in the year of our Lord One thousand
eight hundred and eighty one.