Improvements in or relating to Incubators.
Year: 1893

page_text: Date of Application, 24th Oct., 1893-Accepted, 25th Nov., 1893
COMPLETE SPECIFICATION.
Improvements in or relating to Incubators.
I ROBERT WEBB of 94 Digby Road, Homerton in the County of Middlesex,
Bricklayer, 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 :-
This invention consists of improvements in or relating to incubators and in
order that my said invention may be understood I will refer to the drawings
accompanying this Specification in which
Fig. 1. shows isometrical projection of incubator constructed according to my
said invention,
Fig. 2 vertical section of said invention.
Figs. 3, 4, 5, and 6, 7, 8, are details hereinafter referred to.
The same letters of reference denote the same parts in all views.
I propose to make the incubator of wood or other suitable material which may
be fitted together by means of angle metal B¹ a shews the egg chamber
perforated plate covered with canvas this plate is supported by a collar 6. e tube
of chimney, e disc over chimney c. f water vessels or trays shewu enlarged in
section at Fig. 5 and plan Fig. 6 each vessel f. is provided with tube into which
fits a cap with perforations i on top, k is a piece of canvas or other material
covering the perforations i. and dipping in the water in the vessels f.
A hole is provided in the bottom of each vessel f. corresponding to the hole m
in bottom plate of incubator, n is a piece of wood attached to the wood of which
the incubator is made.
To the piece of wood n I attach a tube o. (preferably a glass tube) shewn dotted
at Fig. 2. this tube is to contain mercury and spirit and into this drops a plunger p.
the upper end of which butts against a screw nut a fixed on bottom of screw y.
which passes through a horizontal rod y. shewn enlarged at Fig. 4 one end of the
rod (or a wire fixed in such rod as shewn) carries a damper r and the other end an
adjustable counterbalance weight_s. The rod y. is pivotted at t. It is a lamp
suspended under the incubator so that the top of chimney » of said lamp enters the
tube or chimney c. w shews glass lids.
The action is as follows.
The eggs are placed on the plate b. (which plate is covered with canvas) through
the lids w. and after the heat is raised to about 105° (the required heat for hatching)
and immediately this temperature is exceeded in the incubator the mercury will
rise in the tube o. and thus lift the plunger p. so as to open the damper r. the air
becoming moist by having to pass through the wet fabric and when the
temperature gets to 105° the mercury falls and consequently the damper ŕ closes.
The damper is regulated to act at the desired temperature by means of the screw
nuts ... and screw y forming a regulator.
The interior of the incubator is lined with felt c' covered with baize, z are holes
for ventilation.
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. In an incubator the means for regulating the heat substantially as herein-
before described and shewn on the accompanying drawings.

page_text: 2. Incubators constructed and arranged substantially as hereinbefore described
and shewn on the accompanying drawings.
Dated this 24th day of October 1893.
BROWNE & Co.,
9, Warwick Court, W.C., Agents for Applicant.