Improvements in Thermostats for Incubators and the like.
Year: 1899

page_text: Date of Application, 9th May, 1899—Accepted, 17th June, 1899
COMPLETE SPECIFICATION.
Improvements in Thermostats for Incubators and the like.
We, JOSEPH BUSSEY, 2, York Street, Ramsgate, Plumber and Gas Fitter, and
SAMUEL DUCKERING, 9, Theodore Terrace, Ramsgate, Surgeon, 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 gas spindle valve is an invention to regulate the flow of gas through it to
the gas burner by a to and fro motion of the spindle with diaphragm attached,
the spindle being connected by a metallic rod or other suitable means direct to
the motive power or for increased motion by the leverage of a beam; the motive
power may be an expanding simple or compound ether expansion box, expand-
ing bars of metal, a float on quicksilver or any other device to obtain the end
desired. The accompanying sheet of drawings forms a part of this specification
in which similar numerals of reference indicate corresponding parts.
Fig. 1, is a perspective view of this invention in one position Fig. 2, is a trans-
verce section of the same and Fig. 2 is a cross section of the inlet pipe showing
the position of the guide plate, the hole in the middle for the spindle to work
in and openings for the gas to flow freely.
Two hollow metallic hemispheres 1, 2, somewhat flattened above and below,
having flanges 3, 4, for joining the two parts together with the rubber diaphragm
between the two flanges the junction being made gas tight by screws or rivets.
The inlet pipe 6, somewhat larger in diameter than the outlet pipe 11, passes
into hemisphere 2, at its axis and projects slightly above the level of the flange 4.
It is made fast to the hemisphere at the place of junction; about midway in the
inlet pipe 6, is fixed a guide plate Fig. 2, 7; this guide plate has a hole in the
centre for the spindle 8, to work in; and openings at the sides Fig. 2 9, 9, for the
gas to pass freely; in the rim of the inlet pipe 6, a V notch 10, is cut to form a bye
pass for the gas when the valve is closed over the inlet pipe: the outlet pipe 11,
is made in hemisphere 2, midway between the flange 4, and inlet pipe 6. In
the axis of hemisphere 1, is a hole with guide collar 12, for the spindle 8 to
work in.
The concavo-convex metal plate 13, is circular in form and has a diameter
somewhat larger than the diameter of the free end of the inlet pipe 6, and has
a hole in the centre for the spindle to pass through; the concave side of this
plate with the rubber diaphragm forms the valve over the free end of the inlet
pipe 6.
The diaphragm 5, of sheet india rubber, circular in form of a diameter suffi-
cient to be secured at the outer edge all round between the flanges 3, and 4, a
hole is made in the centre for the spindle to pass through.
The spindle 8, is a metallic rod a little larger in diameter at the upper end
than the lower end as shown in Fig. 2; the upper end of the spindle above the
guide collar 12, is threaded for any suitable attachment connecting it with the
motive power, it is also threaded for making fast the concavo-convex plate 13,
the rubber diaphragm 5, and the screw nut 14, below this part it is smooth and
works through the hole in guide plate 7.

page_text: The spindle has a to and fro movement through the guide collar 12, and guide
plate 7; at its middle part it is made fast to the concavo-convex plate 13, the
rubber diaphragm 5, by the screw nut 14, and in this way forming a somewhat
dome shaped cover or valve over the free end of the inlet pipe 6; and as the free
end of the inlet pipe 6, is slightly above the level of flange 4, the rubber diaphragm
is slightly stretched from its centre outwards to the flanges 3 and 4, in this way
a smooth face is kept on the rubber to close accurately over the free end of the
inlet pipe 6, as clearly shown in Fig. 2.
Action of the valve, by the to and fro movement of the spindle and its attach-
ments less or more gas passes into the hemisphere 2, and out by the outlet
pipe 11. When the valve is closed over the inlet pipe 6 the gas passes only
through the bye pass 10, to keep the flame alive.
Motion may be given to the spindle by a regulating rod connecting it with. a
simple or compound ether expansion box; expanding bars of metal, a float on
quick silver or other suitable means placed inside the incubator or other machine
in which it is desired to keep at a steady temperature. Increased motion may
be given to the spindle by causing the connecting rods to work a beam with
greater leverage.
The valve may. .be made in all sizes and fixed or placed in any position, suit-
able supports being provided. In Fig. 1 the legs 15 are made fast to the flange 4,
the valve may be reversed and the legs made fast to the flange 3, or other sup-
ports may be provided-the inlet and outlet pipes may be angular as shown in
Fig. 1, or they may be curved or straight.
Having now particularly described. and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is:-
1. The spindle 8 with its attachments of concavo-convex plate 13, the rubber
diaphragm 5, and screw nut 14.
2. The two hollow hemispheres 1, 2, with flanges 3 and 4, guide collar 12,
and outlet pipe 11.
3. The inlet pipe 6, with guide plate 7, and openings in guide plate 9, 9, and
the V notch 10, forming the bye pass.
4. The combination and arrangement of the several parts in Claims 1, 2, 3
thus forming a gas spindle valve with a to and fro motion, almost without
friction, as shown in Figs. 2 and 2^.
Dated this 8th day of May 1899.
JOSEPH BUSSEY.
SAMUEL DUCKERING.