Improvements in and relating to Incubators.
Year: 1898

page_text: Improvements in and relating to Incubators.
I, JOHN COCKCROFT, of Upper White Lee House, Mytholmroyd, in the County
of York, Gentleman, do hereby declare the nature of this invention to be as
follows:-
**
The object of my invention is to construct incubators so as to prevent excess
of heat under any circumstances, more effectively supply the requisite amount of
moisture, and altogether produce an incubator more certain and effective in
operation than hitherto.
I construct my incubator with preferably three drawers, also preferably at the
top of the incubator and near the centre I form an air valve, damper or ventilator
operated by levers, rods, weights and capsule in a similar manner to the lamp
damper, for allowing any surplus heat to escape should too much be generated
by the ordinary lamp or other heater, by this means as soon as the heat becomes
too great the valve opens and ventilates the egg chamber so reducing the heat to
the degree required, also as the heat is reduced when taking out the drawers,
or from other causes the valve gradually closes and remains closed until the
proper degree or a superabundance of heat is again attained.
By this means should the lamp damper get out of order and not act properly
the surplus heat opens the damper or valve and escapes, so preventing the eggs
being spoiled by overheating.
By employing a water trough above the eggs of the same temperature as the
incubator, the moisture is equally applied, and gives better results.
JOHN E. WALSH,
Waterhouse Chambers, Crossley Street, Halifax,
Patent Agent for the Applicant.
Improvements in and relating to incubators.
I, JOHN COCKCROFT, of Upper White Lee House, Mytholmroyd, in the County
of York, Gentleman, 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: —
The object of my invention is to construct incubators so as to prevent excess
of heat under any circumstances, more effectively supply the requisite amount of

page_text: moisture, and altogether produce an incubator more certain and effective in
operation than hitherto.
DESCRIPTION OF DRAWINGS.
Fig. 1 is a sectional front view of an incubator with my improvements applied.
Fig. 2 is a side elevation of Fig. 1.
I construct my incubator with preferably two or three drawers A, and at the
top of the incubator and near the centre 1 form or attach an air valve, damper,
or ventilator B, this valve is opened or closed according to the variation of heat
within the egg chamber, such variation of heat expanding or contracting a
capsule C, which operates upon a rod D, this rod is connected to a weighted
lever E for opening or closing the damper or ventilator. As the capsule expands
it lifts the rod D, which in turn raises the lever E, so opening the damper or
ventilator and allowing the surplus heat to escape; as the heat within the egg
chamber gradually resumes its normal degree, the valve correspondingly closes;
the weight is for regulating the heat within the egg chamber. G is the lamp
damper operated as before described, H the water tank.
By this means as soon as the heat becomes too great the valve opens and
ventilates the egg chamber, so reducing the heat to the degree required, also as
the heat is reduced when taking out the drawers or from other causes, the valve
gradually closes and remains closed until the proper degree or a superabundance
of heat is again attained.
Also by employing a water trough J above the eggs of the same temperature as
the incubator, the moisture is more equally applied, and gives better results.
Also should the lamp damper get out of order and not act properly, the surplus
heat opens the damper or valve B and escapes, so preventing the eggs being spoiled by
overheating further, as the heat is always greatest in the centre of the incubator,
by employing two or three drawers and changing the position of the said drawers
at intervals say twice a day or every time the eggs are turned, each egg gets its
full share of heat, this is impossible with one drawer.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, I would have it understood that
I am aware that valves, dampers or ventilators in connection with the lamps of
incubators are well known, but I declare that what I claim is:
1. The employment of an air valve, damper or ventilator B communicating
with the egg chamber of incubators, such valve operating automatically in the
manner and for the purposes set forth.
2. The construction of incubators having an air valve, damper, or ventilator B,
and interchangeable drawers A in the manner and for the purposes substantially as
shown and described.
Dated this Fifth day of November 1898.
JOHN E. WALSH,
Waterhouse Chambers, Crossley Street, Halifax,
Patent Agent for the Applicant.