Improvements relating to Gas-stoves.
Year: 1893

page_text: Date of Application, 24th Nov., 1893
Complete Specification Left, 11th Jan., 1894-Accepted, 17th Feb., 1894
PROVISIONAL SPECIFICATION.
Improvements relating to Gas-stoves.
I, OLIVER SCHOFIELD RUDDOCK, of 51 Chelsham Road, Clapham, in the
County of Surrey, Manager of Factory, do hereby declare the nature of this
invention to be as follows:-
My invention relates to gas-stoves and has for its object to provide an attachment
for such stoves by means of which a tap is operated to stop or partially stop the
supply of gas as soon as a vessel is removed from the stove, said tap being
automatically opened and gas allowed to flow again when the vessel is replaced in
position on the stove.
The chief feature of my invention is that the attachment is arranged to operate
an ordinary stop-cock and can thus be readily applied to existing gas stoves.
According to my invention I provide a lever pivoted at a suitable part of the
stove, and connected by a link or other suitable means to an arm secured to or
forming part of the plug of the stop-cock. The lever is adapted to be acted on by
the weight of a vessel placed on the stove and thereby caused to maintain the
stop-cock in its open position. The lever is provided with a counterweight or
spring which when the vessel is removed from the stove turns the said lever and
closes or partially closes the stop cock thereby automatically extinguishing or
turning down the gas. When the vessel is replaced on the stove the weight thereof
acting on the lever opens the cock as aforesaid and the gas is relighted from a pilot
light adjacent to the jets.
The gas pipe leading to the stove is preferably provided with an ordinary cock
in addition to the automatic cock above described, so that when the stove is not
required to be used and the pilot light is out the gas supply can be cut off from the
Baid stove.
The escape of gas which would otherwise occur from vessels being
placed on said stove is thereby avoided.
My improved attachment is especially useful in workshops. For instance in
carpenters' shops where gas-stoves are used for heating glue-kettles, a great waste
of gas commonly occurs owing to the fact that the gas is not turned down or out
when a kettle is removed from the stove to the work-bench. By the use of my
automatic attachment I effect a considerable reduction in the consumption of gas.
Dated this 23rd day of November 1893.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.
Improvements relating to Gas-stoves.
I, OLIVER SCHOFIELD RUDDOCK, of 51 Chelsham Road, Clapham, in the
County of Surrey, Manager of Factory, do hereby declare the nature of this
invention and in what manner the same is to be performed, to be particulariy
described and ascertained in and by the following statement :--
My invention relates to gas-stoves and has for its object to provide an attachment
for such stoves by means of which a tap is operated to stop or partially stop the

page_text: supply of gas as soon as a vessel is removed from the stove, said tap being auto-
matically opened and gas allowed to flow again when the vessel is replaced in position
on the stove.
According to my invention I provide a bell-crank lever pivoted at a suitable
part of the stove, and connected by a link or other suitable means to an arm
secured to or forming part of the plug of the stop-cock. The other end of the
lever is adapted to be acted on by the weight of a vessel placed on the stove, so as
to maintain the stop-cock in its open position. The lever is provided with a
counterweight or spring which when the vessel is removed from the stove rotates
the said lever and closes or partially closes the stop-cock thereby automatically
extinguishing or turning down the gas. When the vessel is replaced on the stove
the weight thereof acting on the lever opens the cock as aforesaid and the gas is
relighted from a pilot light adjacent to the jets.
The accompanying drawing is a side view of a gas stove provided with my
attachment shewing how I carry my invention into practice.
A is the burner furnished with jets A'; B is the supply tube, B' the gas cock,
and C, C are the feet on which the stove is supported. D is one arm of a bell-
crank lever pivoted at D¹ on a projecting piece D' which is secured to or forms
part of the burner. The arm D is connected by a link E pivoted to it at E' to an
arm B² secured to or forming part of the plug of the gas-cock B¹. The second
arm D of the bell-crank lever is adapted to be acted on by a rod F which slides
in a tubular guide F¹ secured to or forming part of the burner A. G is a weight
secured to a third arm D' of the bell-crank lever which weight operates to maintain
the rod F in its highest position and the cock B' closed.
.
When the rod F is pressed down by the weight of a vessel placed on the stove,
the bell-crank lever is rotated and through the link E rotates the plug of the gas-
cock B so as to turn on the gas which is lighted by a pilot light adjacent to the
jets as shewn for instance at H. The rotation of the bell-crank lever also lifts the
weight G.
When the vessel is removed from the stove the weight G acts to rotate the
bell-crank lever to its former position thereby turning off the gas through
the medium of the link E and restoring the rod F to its highest position.
The gas pipe leading to the stove is preferably provided with an ordinary
cock in addition to the automatic cock above described, so that when the stove is
not required to be used and the pilot light is out, the gas supply can be cut off
from the said stove. The escape of gas which would otherwise occur from vessels
being placed on said stove is thereby avoided.
My improved attachment is especially useful in workshops. For instance in
carpenters' shops where gas-stoves are used for heating glue-kettles, a great waste
of gas commonly occurs owing to the fact that the gas is not turned down or out
when a kettle is removed from the stove to the work-bench. By the use of my
automatic attachment, I effect à considerable reduction in the consumption of gas.
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:-
A gas-stove having the attachment for automatically turning off the gas when a
vessel is removed from the stove and turning on the gas when a vessel is placed
thereon, constructed and operating as described with reference to the accompanying
drawing.
■lated this Ith day of JANUARY 18945
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.