Improvements in Automatic Devices for Regulating the Temperature of Rooms and the like Heated by Gas.
Year: 1888

page_text: Improvements in Automatic Devices for Regulating the
Temperature of Rooms and the like Heated by Gas.
JAMES EDWARD CARTER of Craven Edge Halifax in the County of York, Engineer
and Patent Agent do hereby declare the nature of this invention to be as follows:-
My invention relates to an improved automatic device for regulating the Temperature
of gas heating apparatus.
For purpose aforesaid I place on the gas feed pipe within the room or chamber
to be heated a valve with inlet and outlet of ordinary construction on the valve
spindle which passes through the seat and is guided in bearings at the top and
bottom, is a weighted valve which falls on to and closes the seat when the apparatus
is not in use, the bottom part of the spindle is operated upon by one arm of a shaped
lever which has its fulcrum at the junction of the two arms, the other arm of the said
lever comes in contact with and is operated upon by the outer end of a spiral coil
composed of two strips of metal of unequal expansiveness, (such as copper and zinc)
secured together, the other end being fastened to a boss on the spindle in the centre
of the coil. The spiral coil and valve spindle lever are enclosed within a light metal
cylinder secured to the valve body, the coil spindle passes through the centre of one
end of the cylinder and is carried by a bracket the face of which is indexed and
provided with two regulating screws the latter are for regulating a pointer which is
secured to the outer end of the coil spindle so that the coil can be set to operate the
valve spindle by means of the lever.
When the temperature of the room is falling the coil contracts and winds up, the
outer end acts against the lever and opens the valve allowing more gas to pass to
the burner. When the temperature has again risen the coil will return to its former
position and the valve returns to its seat by its own weight thus maintaining an equal
degree of heat.
A small hole through the rib of the valve seat and a regulating screw in the body
allows sufficient gas to pass to the burner prevents the burner going entirely out.
_ Dated this 24th day of January 1888.

page_text: Improvements in Automatic Devices for Regulating the
Temperature of Rooms and the like Heated by Gas.
JAMES EDWARD CARTER of Craven Edge Halifax in the county of York, Engineer
and Patent Agent a communication from Otto Bohm, Engineer Stuttgart, Germany
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 :-
In order that this Invention may be fully understood, I have annexed 1 Sheet of
Drawings in which Fig. 1. is a longitudinal vertical section Fig. 2. side elevation,
Fig. 3 a cross section. P is a valve case, Q the valve, the spindle of which is guided
at R and S, the spindie bears upon the hinged lever T against which acts the spring U
composed of two metals of different expansiveness (such as zinc and copper) rendering
it sensible to the changes of temperature.
The spring is enclosed in barrel V below the valve box, one end of the spring is
secured to the axle X which extends through the stuffing box W and carries a hand
or finger Y. The apparatus is connected to the gas feed pipe of the heating apparatus,
by preference within the room to be heated near the floor where the change of
temperature is most effective, as the temperature of the room lowers the spring U
contracts, and winds up, whereby the free end operates the lever T which lifts the
valve and allows gas to pass through the valve seat opening to the burner. When
the temperature again rises in the room, the spring will return to its previous position,
the valve Q returns to its seat by its own weight. The screw, a, is for adjusting the
quantity of gas passing through the aperture Z in the valve body so that the heating
apparatus burner will not when the valve closes its seat, go entirely out.
The hand Y and spring U may be adjusted by set screws, J and g to the required
temperature as shewn on the drawing, uniform temperature can be maintained with
this device unless a considerable amount of cold air be admitted into the room through
windows or doors.
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. Automatic devices for regulating the temperature, constructed as and for the
purpose herein fully described and illustrated.
2. The spring U, lever T, valve Q casing V such as herein fully described and
illustrated.
3. The hand or finger V with adjusting set screws in combination with the axle X
and spring U substantially as berein set forth and illustrated.
Dated this 23rd day of October 1888.
ADMAÐ
JAMES EDWARD CARIER.