Improvements in Self-closing Gas-burners.
Year: 1894

page_text: Date of Application, 9th Apr., 1894-Accepted, 15th Dec., 1894
VUMI DEIN DI BUITIVATION.
Improvements in Self-closing Gas-burners.
I, HENRY DAVID SYMMES, of the City of St. Catharines, in the Province of
Ontario, in the Dominion of Canada, Electrical Engineer, do hereby declare the
nature of my 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 gas-burners which open and close by the application and
cessation of heat, and the object of my invention is to prevent escape of gas from
the burner after the flame is extinguished, and by the application of heat admit gas
to the burner.
My invention consists of a gas-burner tube having internally a valve seat, a valve
head fitting thereto and provided with a stem or rod adjustably passing through a
bar or perforated disk placed inside the tube, so that when said tube is slightly
heated by the application of the flame of a match or other means, the tube will
elongate, thereby opening the valve and permitting the gas to pass through the tip
at which it is burned, and when the flame is extinguished, the valve closes by the
burner tube shortening, owing to the cessation of heat.
Referring to the accompanying drawings:-
Figure 1, is a longitudinal section of my improved gas-burner, and
Fig. 2, is a like view showing the valve reversed.
A, is the burner-tube, provided with a gas-burning tip B, at one end, and the
other end adapted to connect with a gas pipe or tube to supply gas to the burner.
C, is a valve seat fixed to the inside of the burner-tube A, or tip B, and D, is a
valve head fitting into or against the said seat, and said valve head is provided with
a stem or rod E, which is provided with a screw-thread F, screwing through a
perforated disk G, or bar fixed across the tube A, internally, so that by turning
said stem or rod, the valve can be adjusted to prevent leakage.
H, is a slot in the end of the valve rod or stem E, to effect adjustment of the
valve by means of a screw driver, turning said rod or stem. .
Preferably, the gas tip B, is provided with a small hole or tube J, to permit a
small quantity of gas to escape without going through the slit in the gas tip,
thereby producing a small flame to heat the burner-tube A, more directly than
through the medium of the flame at the tip, to elongate the burner-tube A, by
heat, in conjunction with the heat from the burner.
If desired, the valve may be located near the lower end of the tube A, as shown
in Fig. 2, and the valve rod extend upwardly and pass through a perforated disk G,
or bar near the gas tip B, of the burner tube.
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:
1. The combination with the burner-tube A, provided with an internal bar or
perforated disk G, near one end, and a gas-burning tip B, at the opposite end, said
tip provided with a valve seat C, of a valve head D, fitted to said seat, and a valve
stem or rod E, fixed to said valve head and provided with a screw-threaded
portion F, screwing through said disk, whereby the valve opens by elongation of
said tube when heat is applied thereto externally, and maintained open by the heat
from the gas flame, and the valve closes after the gas flame is extinguished by
withdrawal or cessation of heat, thereby shortening the tube, as set forth, for the
purpose described.
2. The burner tube A, provided with a gas-burning tin B. and having a valve D.

page_text: at one end and à bar or perforated disk G, near the opposite end, said valve and
disk connected by a rod or stem E, within said tube, whereby said valve closes by
shortening of the tube when the gas flame is extinguished, and is maintained open
by the heat from the burning gas elongating said tube, as and for the purpose
set forth.
3. The combination with the burner-tube A, provided with a cross bar or
perforated disk G, a valve D, closing said tube, a rod or stem E, connecting said
disk and valve, and a gas-burning tip B, having an inclined hole J, to cast a jet of
flame against the base of said tip to heat said burner tube, as set forth for the
purpose described.
Dated the 24th day of February 1894.
HENRY DAVID SYMMES.