A Gas Regulator for Maintaining Required Temperatures in Green- houses, Rooms, Ovens, or in Any Description of Room when Heated by Gas.
Year: 1892

page_text: Date of Application, 3rd May, 1892
Complete Specification Left. 2nd Feb., 1893-Accepted, 22nd Apr., 1893
PROVISIONAL SPECIFICATION.
A Gas Regulator for Maintaining Required Temperatures in Green-
houses, Rooms, Ovens, or in Any Description of Room when
Heated by Gas.
I, WALTER PHILLIPS Consulting Engineer 108 Fenchurch Street London,
E.C. do hereby declare the nature of this invention to be as follows :-
I provide a syphon tube, with a closed hall at one end, and partly filled with
thermo liquid and mercury, to form a seal, to the open end of such tube I securely
fix, a suitable apparatus, made of metal, vulcanite or other substance, consisting of
a cap tube, having two openings at different levels, at right angles to the hole
through the cap tube. The cap tube is tapped inside to about half way between
the two openings, and the lower part is opened out clear of the threads to receive
the syphon tube, and not covering the lower hole, which I call the outlet, the upper
one being the inlet, which is in connection with the ordinary gas mains, the outlet
being connected to the Bunsen or other burners at the heating appliance. A
hollow steel, or suitable metal tube is made, screwed on the outside, and made to
screw into & through the cap tube, and projecting down into the syphon tube, a
hole is drilled in the side of this hollow tube, corresponding with the hole of the
inlet in the cap tube. This hollow tube is closed at one end, & the lower end
in the syphon tube touches the mercury at a given temperature, thus preventing
the passage of gas to the main burners; but should the temperature fall, then the
opening of the hollow tube will be exposed, and there will be a free passage of gas
to the burners which are then lighted by presence of a sentinel or-by-pass light
provided for this purpose; the rise of temperature caused by the working of the
heating apparatus, will again cause the mercury to rise, and close the opening in
the hollow tube, which will again shut out the lights. The whole apparatus thus
described I claim to be one applicable to the regulation of heat, in rooms, green-
houses, ovens, &c., where the heating is carried out by gas, and where the
temperature requires to be maintained within a few degrees, and also where it is
requisite that the temperature shall not fall below a certain point.
Dated this 2nd day of May 1892
WALTER PHILLIPS.
COMPLETE SPECIFICATION.
A Gas Regulator for Maintaining Required Temperatures in Green-
houses, Rooms, Ovens, or in Any Description of Room when
Heated by Gas.
WALTER PHILLIPS Consulting Engineer 108 Fenchurch Street London
E.C. 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 :-
Fig. 1. I provide a syphon tube of glass, preferably, marked A, on which a ball
has been blown, the top of the opening of the ball being capped with an air tight
cap marked G, this cap is provided to enable the instrument being filled, on the
shorter leg of the tube I fix securely, a cap tube of brass, vulcanite, or like
material marked C the upper part of which is screwed to below the inlet hole D.
A hollow tube B is screwed on the outside and is passed through the cap tube, a
hole is provided in this tube B at the level of the inlet D, but this hole is
made slightly elongated as shown in Fig. 2. the object being to allow of the

page_text: adjustment of the instrument for a certain temperature. The outlet in the cap
tube is marked F.
In Figure 3. I show a small valve made of cork, ebonite, vulcanite, or brass,
which may float on the surface of the mercury and so stop the flow of gas through
the hollow tube B, when the temperature is in excess of that required.
The following is the method of applying and the working of the instrument.
I fix the instrument in the line of the main supply pipe, for gas to the principal
burners, and I will take as an example, the heating of a greenhouse by a hot water
boiler. Under the boiler there are placed a group of Bunsen burners which are
supplied with gas through the instrument there is also a pilot or sentinel light fixed
among the group of burners, and which is supplied by a bye-pass pipe taken from
the meter side of the instrument and this burner is always kept alight in order to
ignite the other burners, when there is gas passing. The instrument being thus
fixed in position and the greenhouse heated to about the temperature required, a
quantity of mercury is poured into the tube through the opening above the ball,
the thermo spirit is then poured in until the instrument on this side is full, the
сар G. is then put on and made air tight. I then pour into the shorter leg of the
tube a quantity of mercury sufficient, so that it stops the mouth of the tube B
when the temperature is that which is required, any decrease of the temperature of
the house will cause the contraction of the thermo spirit, and the mercury will
uncover the mouth of the tube B thus causing an escape of gas which will be
ignited at the Bunsen burners under the boiler, and a corresponding rise of
temperature in the house will expand the thermo spirit and thus cause the
mercury to rise again shutting off the passage through the tube B, of the gas to
the Bunsen burners.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare what I
claim is.
1. An easy means of governing the temperature of greenhouses, rooms, ovens,
or any enclosed space, where the mode of heating is done by gas.
2. A simple contrivance for obtaining this result.
2
The reliability of the oneratns when en mode