Improvements in Self Lighting Gas Burners.
Year: 1887

page_text: Date of Application, 18th Mar., 1887
Specification Accepted, 13th Dec., 1887
Improvements in Self Lighting Gas Burners.
I, HENRY HOBART TALLMADGE of 195 Broadway City of New York, in the County
of New York, and State of New York United States of America, Gentleman
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 :-
My Invention relates to self lighting gas burners, and the object I have in view is
to provide a gas burner with a roll of fulminating tape and suitable mechanism,
whereby the mechanism will explode one of the fulminating pellets on the tape,
and ignite the gas, in the act of turning it on at the burner.
Figure 1 is a perspective view of a gas burner embodying my invention. Figure 2
a side elevation with the cover of the fulminating chamber removed. Figure 3. a
perspective view of the inside screw which holds the cock in place, and which
also serves to secure the cover of the fulminating chamber. Figure 4 a view
shewing cam and operating mechanism working the hammer and feed. Figure 5, a
perspective detail view of the paper tape feeding mechanism. Figure 6 a perspective
view of the spring hammer mechanism for exploding the pellets, shewing a slight
modification of the impact end of the same. Figure 7 a detail sectional view of the
fulminating tape chamber. Figure sa view of the extension handle. Figure 9, a
detail view of the plug cock; and, Figure 10 a transverse sectional view of the
extension handle.
Referring to the annexed drawings, by letters, A is the burner proper, and it is
provided with the usual tip a, and taper plug cock B. E is the cock screw and its
smaller end e enters the smaller end of the cock B when in place; the washer el
forming a head, and preventing the cock from coming out. This screw E is replaced
and removed by means of an ordinary two pronged wrench, the holes a¹ being
provided for this purpose. F. is a standard on the screw E, and it is provided with
two longitudinal slots, which allow the taper end to spring in and out, and
expand or contract the circular recess, so that if the cap or cover G is placed on
the fulminating chamber H, the central hole g will fit over the taper end f¹ and
compress it until it gets to the recess when it expands and securely holds the cap
or cover in place. This operation is such that the cover may be instantly removed or
D
011

page_text: replaced with the greatest facility, when replenishing the fulminating chamber. The
standard Falso serves as an axle for the roll of fulminating tape to revolve on, and
ensure its proper delivery to the feed mechanism.
His the fulminating chamber and it is secured to the smaller end of the cock by
the screw E, and its washer e¹, so as to revolve with it
The spring hammer K encircles the smaller end of the cock B, and is provided
with a projection which fits into a slot 2 in the cock, but which does not completely
fill said slot, thereby allowing a lost motion between the cock and the hammer, the
object of which will be fully hereinafter described.
The spring hammer K is also provided with two circumferential projections k¹ k
which alternately come in contact with a pin k² on the body of the cock, the
projections k¹¹ serving to limit the play of the hammer K; and as the hammer is
attached to the plug-cock, said projections also serve to limit the motion of the cock
itself, allowing it to be turned far enough one way to admit gas to the burner, and
reversely, to shut it off.
SU
The plate M which encircles the smaller end of the cock B is located between the
spring hammer K and the side of the cock, and it has a slot m which engages with
the pin ², securing it rigidly in place, and preventing it from having any motion
whatever. Said plate M is formed with an extension m³ bent at a right angle to it,
as to extend partially around the periphery of the chamber H. The lower end m² of
the extension piece aforesaid is turned radially outwards, as shewn, and its upper
end m³ is forked to hold the fulminating pellets in place and prevent the tape
buckling or puckering while the hammer explodes the pellets.
Immediately at back of the forked end m³, the extension m¹ is raised as shewn
at m to hold the next pellet in place while the preceding one is being exploded,
the space between the raised portion m' and the forked end m³ being just equal to
the space between the pellets on the tape.
The plate M is also provided with an inclined or angular projection or trigger n
which comes in contact with an arm n' on the spring hammer K, causing said
hammer to ride over it, thereby raising the hammer head N, by the operation of
turning on the gas, and allowing it to fall and explode the pellet; and, as the gas is
turned off the operation is reversed, the hammer arm n' passing under the trigger n
causing it to impinge on the tape (which is shewn in dotted lines in Figure 2 of the
drawings) between it and the periphery of the tape chamber, and drawn out enough
to place another pellet between the forked end m³, in position to repeat the operation
of exploding the pellet and lighting the gas. The rear end n² of the spring hammer
is provided with teeth which carry the used tape around and against the radial arm m²,
which operation serves the purpose of giving the tape a downward inclination which
prevents it from continuing around the chamber, and interfering with, and becoming
entangled with, the exploding mechanism; at the same time, the teeth press the tape
against the projection in³ which partially perforates it, making it easy to sever when
it becomes too long.
The hammer head N in the view Figure 6 is of a peculiar construction, being
cylindrical in form at its impact end, and provided with a longitudinal hole O, which
conducts the flame from the exploding pellet directly to the tip a, thereby absolutely
ensuring the ignition of the gas every time a pellet is exploded.
The cock B is provided with an enlarged bead having a reduced square shank or
neck b. C is the operating lever having an enlarged opening c and a narrow slot c¹
so that the head of the cock B will pass through the opening c, and then draw the
lever down so that the slot c' will engage the shank 6, whereby the lever forms a
handle for the cock, and it will thus be seen that if the lever be pushed to the right
the cock will be closed; and, if moved to the left, opened.
In Figure 10, D is an extension handle to the lever C, and it has a slot d throug
which passes a set screw d¹ for securing it to the lever at any desirable point
d2 d2 are guards or flanges on the lever C, and they form a groove in which th
handle D slides, and prevent any side motion of the said handle with reference t
the lever.
;

page_text: The operation of the device above described is as follows:-
The cap being removed, a roll of tape is placed in the chamber, the cap replaced,
and the cock being at its limit to the right, the gas is off. On moving the cock, by
means of the lever or the thumb piece, to the left, the gas is allowed to pass through
to the burner tip, at the same time the hammer is carried forward, the arm n¹ strikes
the rigid trigger n, rides upon and over it, and the hammer head N falls upon and
explodes the pellet upon the tape, thereby igniting the gas.
Having now particularly described and ascertained the nature of
Invention, and in what manner the same is to be performed, I declare that what I
my said
claim is
Firstly-The combination with the burner, the operating mechanism, and the
fulminating chamber, of the spring screw standard E, F, and the cap or cover G,
substantially as described.
Secondly-The combination with a self lighting gas-burner, of a hollow hammer
head N arranged to conduct the flame from the flash of the exploding pellet direct to
the escaping gas at the tip of the burner, as set forth.
Thirdly The plug B provided at its smaller end with the keyway or slot 62, in
combination with the spring hammer K, having projection & working in said slot b³
so as to produce a lost motion substantially as set forth.
Fourthly The plate M having radial arm or projection m² in combination with
the spring hammer K having teeth n² and stops ¹¹, and the pin ³, all arranged
substantially as specified.
Fifthly In a self lighting gas-burner the plate M having forked projection m³
and raised portion m in combination with the spring hammer K substantially as
set forth.
Sixthly :—In a self lighting gas-burner the plate M provided with a raised angular
projection n and a forked projection m³ in combination with the spring hammer
plate K provided with lateral projection n', substantially as specified.
Seventhly The combination with a gas-burner, of the slotted lever C, and the
slotted adjustable handle D secured to the said lever C by a set screw, substantially as
specified.
Dated this Eighteenth day of Manch 1007