Improvements in Appliances for Igniting and Extinguishing Gas Flames from a Distance.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Appliances for Igniting and Extinguishing Gas
Flames from a Distance.
I, EWALD KNAPP, of No. 39, Christophstrasse, Cologne, Germany, Engineer, do
hereby declare the nature of this invention to be as follows :—
This invention relates to appliances for effecting the ignition and extinction of
gas flames from a distance in which the ignition and extinction of the gas flame is
effected by the step-by-step rotation of a disc-valve having perforations so arranged
that in, one position of the valve they correspond with channels leading from a gas
supply chamber to the burner, so as to allow of the passage of gas, which is ignited
by a constantly burning lighting jet, and in another position they are situated inter-
mediately, between such channels, so as to cut off the supply. The present improve-
ments consist in the employment of pneumatic devices for effecting the rotation of
such valve, as I will describe with reference to the accompanying drawing, in which
Figure 1 shews a vertical section of one arrangement,
Figure 2 shews a sectional plan, and
Figure 3 shews a sectional plan of a modified arrangement.
a is a hermetically closed casing, which is fitted by a nozzle b to the end or a
gas,supply pipe, while the burner is fitted on the upper nozzle c. This nozzle is
closed inside by a plug f having a series of channels g through which gas can pass to
the burner, and which has rotatably mounted on its inner surface a disc-valve d
formed with ratchet teeth round its periphery and having perforations e so arranged
in a circle relatively to the channels g of f, that when the valve is rotated through a
distance equal to one tooth of the ratchet by means of a pawl the perforations e are
brought over the channels g of f so as to supply gas to the burner, while when the
valve is shifted the distance of another tooth, the holes e are situated between the
gas channels g which are consequently closed by the body of the valve. The pawl k
is actuated for this purpose as follows. The casing a contains a flexible bag i
Figures 1 and 2, from which a small tube 8 leads through the casing a to any distance
outside..
If now air be forced through tubes by any suitable known means so as to expand
the bag, i, it is made to press upon a lever which carries the ratchet and thus
effects the before described partial rotation of the valve. On the air pressure being,
then allowed to escape from i again, this will collapse, and lever h and pawl k will be'
moved back to their original position by a spring m; a second spring keeps the
pawl in gear with the ratchet teeth.
In the modification at Figure 3 the bag i of the first arrangement is replaced by a
small cylinder o with piston n, connected by a rod to the pawl lever h, and, the
cylinder o has a nozzle p to which a pneumatic supply pipe is attached so that on
forcing in air pressure as before, the piston n is forced forward so as to actuate the

page_text: pawl k, while on allowing the air pressure to escape, the piston and lever are forced
back by the spring m.
Dated this Oth day of Anvil 1900
ABEL & IMRAY,
Agents for the Applicant.
Improvements in Appliances for Igniting and Extinguishing Gas
Flames from a Distance.
I, EWALD KNAPP, of No. 39, Christophstrasse, Cologne, Germany, Engineer, 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 :-
This invention relates to appliances for effecting the ignition and extinction of gas
flames from a distance in which the ignition and extinction of the gas flame is effected
by the step-by-step rotation of a disc valve having perforations so arranged that in
one position of the valve they correspond with channels leading from a gas supply
chamber to the burner, so as to allow of the passage of gas, which is ignited by a
constantly burning lighting jet, and in another position they are situated
intermediately between such channels, so as to cut off the supply.
The present improvements consist in the employment of pneumatic devices for
effecting the rotation of such valve, as I will describe with reference to the drawing
accompanying my Provisional Specification in which Fig. 1 shews a vertical section
of one arrangement, Fig. 2 shews a sectional plan, and Fig. 3 shews a sectional plan
of a modified arrangement.
a is a hermetically closed casing, which is fitted by a nozzle b to the end of a gas
supply pipe, while the burner is fitted on the upper nozzle c. This nozzle is closed
inside by a plugf having a series of channels g through which gas can pass to the
burner, and which has rotatably mounted on its inner surface a disc valve d formed
with ratchet teeth round its periphery and having perforations e so arranged in a
circle relatively to the channels off, that when the valve is rotated through a
distance equal to one tooth of the ratchet by means of a pawl the perforations e are
brought over the channels g off so as to supply gas to the burner, while when the
valve is shifted the distance of another tooth, the holes e are situated between the gas
channels g which are consequently closed by the body of the valve. The pawl kis
actuated for this purpose as follows. The casing a contains a flexible bag i Figs. 1
and 2, from which a small tube s leads through the casing a to any distance
⚫outside.
If now air be forced through tube s by any suitable known means so as to expand
the bag i, it is made to press upon a lever h which carries the ratchet k and thus
effects the before described partial rotation of the valve. On the air pressure being
then allowed to escape from i again, this will collapse, and lever h and pawl k will be
moved back to their original position by a spring m; a second spring keeps the
pawl in gear with the ratchet teeth.
In the modification at Fig. 3 the bag i of the first arrangement is replaced by a
small cylinder o with piston n, connected by a rod to the pawl lever h, and the
cylinder o has a nozzle p to which a pneumatic supply pipe is attached so that on
forcing in air pressure as before, the piston n is forced forward so as to actuate the
pawl k, while on allowing the air pressure to escape, the piston and lever are forced
back by the spring m.

page_text: Having now particularly described and ascertained the nature of this inver-
tion and in what manner the same is to be performed, I declare that what I
claim is
In an appliance for igniting and extinguishing gas flames from a distance, in
combination with a valve actuated by a ratchet and pawl device ย chamber
connected on the one hand with a tube for transmitting pneumatic pressure and on
the other hand with the actuating pawl, so that the alteration of the pneumatic
pressure in the chamber actuates the pawl and therefore the valvė, substantially as
described.
ABEL & IMRAY,
Agents for the Applicant.