An Improved Oirculating Boiler, and Lamp Attachment and Lamp Flame Diminisher, for Heating and Regulating the Heat of Incubators and Foster Mothers or Brooders.
Year: 1896

page_text: Date of Application, 29th July; 1896-Accepted, 17th Oct., 1896
COMPLETE SPECIFICATION.
An Improved Oirculating Boiler, and Lamp Attachment and Lamp
Flame Diminisher, for Heating and Regulating the Heat of
Incubators and Foster Mothers or Brooders.
I WILLIAM THOMPSON CHAFER Watchinaker and Jeweller of 52 Market
Place Doncaster in the County of York 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 lamp attachment consists of a metal bar about six inches long and a quarter
of an inch thick. Fig. I, A one end of this bar is bent up about half an inch and
a slot is cut in the bent up end B about one sixteenth of an inch wide and in a line
with the centre of the bar A. Fig. 1, C C is a piece of brass or other metal one
sixteenth of an inch thick, and half an inch broad one end of which is jointed
into B the turned up end of bar A. The other end of lever CC is left a little
broader but not quite so broad as the wick tube is high, and cut to the shape of
Fig. I, D leaving the two ends E E sufficiently long to allow them to be bent
round to form an oblong collar, called the flame diminisher the shape of plan
Fig. II F. This collar should fit quite loosely round the wick tube. The collar
varies in size according to the size of wick desired to be used. A three quarter
inch wick should be used for a fifty egg size incubator and a one inch wick for a
one hundred egg incubator.
The other end of bar A, I should be flattened out and shaped to fit the side of
the burner of the lamp to which it is rivetted, Fig. III K, in a line with the edge
of the wick tube.
Fig. III shows the flame diminisher and attachment in position with the top part
of the burner removed.
Before replacing the top part of the burner cut a small slot in the side of it for
the lever C to work up and down in.
To the hook L is attached one end of a chain the other end of the chain is
attached to a lever fitted on the top of the incubator, this lever is made to rise and
draw up the chain at any desired temperature by the expansion of a capsule, a
metal band, mercury or other means accuated by the heat in the egg chamber.
When the chain is drawn up it lifts up the lever C and slides the collar or flame
diminisher up the wick and thus diminishes the flame.
The circulating boiler forms the top part of the lamp chimney with tubes across
and a space for water all round the outside, and is made of sheet copper or other
metal.
Fig. IV is an elevation of the boiler showing. the return pipe union M and the
flow pipe dotted circle N which is at the back of the boiler at a right angle to the
return pipe.
Fig. V is an elevation of the boiler cut through the centre from left to right.
The boiler should be six inches long for incubators up to fifty egg size and foster
mothers or brooders, and eight inches long for larger incubators.
The diameter of the inner caseing of the boiler at the bottom should be double
the width of the lamp wick and taper upwards so that the opening at the top is
the same diameter as the lamp wick is wide, or balf the width of the opening at the
bottom of the boiler.
A space of half an inch should be left between the inner caseing and the outer
case of the boiler for the water EVOO 00

page_text: Fig. V, P, P, P, are half inch tubes fitted across the inner caseing of the boiler,
through which the water circulates. The cross tubes intercepting the heat from
the lamp adds considerably to the heating power of the boiler."
Fig. VI is a plan looking down the top of the boiler and shows the cross
tubes R R. and the flow pipe union.
Fig. VII is a plan of the bottom of the boiler showing the cross tubes R, R, and
the return pipe union M:
The flow and return pipes are connected to the tank of water or the water pipes
that are fitted inside the egg chamber.
The lamp is fitted with a small copper chimney with a slot cut in one side to fit
over the lever C and sufficiently wide to allow the lever to work freely. A one
inch square hole is cut in the side of the lamp chimney and a piece of talc fitted in
so that the size of the flame can be seen.
The top of the small chimney is forced up against the bottom of the boiler by
means of a spring under the bottom of the lamp thus forming a continuous chimney
with the boiler as shown in Fig. VIII.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed I declare that what
I claim is,
1. The lamp attachment with the collar or flame diminisher as shown in Fig. I
and Fig. II.
2. The small upright circulating boiler forming the top portion of the lamp
chimney with the cross tubes as shown in Figs. IV, V, VI, and VII.
Dated this 28th day of Jule 1803
W. T. CHAFER.