An Acetylene Gas Lamp.
Year: 1897

page_text: An Acetylene Gas Lamp.
I, FREDERICK HUGH SMITH, The Limes, Dunblane, N.B., Engineer, do hereby
declare the nature of this invention to be as follows:-
This invention relates to an acetylene gas lamp to burn acetylene gas generated
in a simple device fixed to or forming part of the lamp itself. At back of and below
the lamp proper, is a tank or box the top portion of which is divided to hold water,
from which is a small tube connecting with larger part of tank below. The lower
part of the box contains the calcium carbide, and water is then poured into upper tank
and through the tube water drops among the calcium forming gas and creating
pressure. The pressure acts on a valve of the water pipe opening and closes same
thereby stopping the supply of water till the pressure is reduced to less than weight
of water and thus allows more water to pass and thus keeping up the supply of
gas at an even pressure. A pipe connecting the burner enters the tank above the
calcium.
A convenient form of valve for the water suppl, may consist of an arm suspended
above the pipe mouth. When the pressure is on, the arm carrying a pad or plug
is pressed against the pipe mouth, but when the pressure is off the arm hangs
locsely in front of the pipe mouth.
The said acetylene gas lamp may be conveniently used on cycles, motors, and
carriages but is also applicable to illuminating lamps for all purposes.
Dated this 92nd dow of Tinh 1907
JOHNSONS,
Petitioner's Agents, 115, St. Vincent Street, Glasgow.
AR ACClyrone Cras Lamp.
I, FREDERICK HUGH SMITH, of The Limes, Dunblane, N.B., Engineer, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:-
This invention relates to an acetylene gas lamp to burn acetylene gas generated
in a simple device fixed to or forming part of the lamp itself. At back of and
below the lamp proper, is a tank or box the top portion of which is divided to hold
water, from which is a small tube connecting with larger part of tank below. The
lower part of the box contains the calcium carbide, and water is then poured into
the upper tank and passing through the tube drops among the calcium carbide
forming gas and creating pressure. The pressure acts on a valve of the water pipe
ד.0...

page_text: opening and closes same thereby stopping the supply of water till the pressure is
reduced to less than the weight of water when more water is allowed to pass and
keep the supply of gas at an even pressure. A pipe connecting the burner enters
the tank above the calcium.
A convenient form of valve for the water supply may consist of an arm suspended
above the pipe mouth or otherwise arranged. When pressure is on, the arm carry-
ing a pad or plug is pressed against the pipe mouth, but when the pressure is off,
the arm hangs loosely in front of the pipe mouth.
But in order that my said invention may be more readily understood and easily
carried into effect I will proceed to describe the same with reference to the accom-
panying drawings in which:-
:-
A is the upper water chamber and B the lower or calcium chamber.
The two chambers are connected together by a screw ring C having a milled
or other edge and adapted to engage with the flange e formed on the rim of the
chamber B so that it can be clamped to the chamber A. and form a gas tight joint.
D is the water supply pipe by which, after the chamber A has been filled by
removing the lid a³, the water is caused to drop among the calcium. E is the
valve for stopping the supply of water when the pressure of gas generated exceeds
the weight of water contained in the chamber A, and consists of a nipple e having
an aperture el formed therein, which can be opened and closed by an indiarubber
or other disc e retained in position by a wire or other guard e3; the escaping water
running over the side of the nipple and dropping from the drip et.
The generated gas is led from the top of the chamber B to the lamp burner by
a pipe after passing through an ordinary condensing coil arranged within
the water tank.
The said acetylene gas lamp may be conveniently used on cycles, motors and
carriages but is also applicable to illuminating lamps for all purposes.
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. An acetylene gas lamp having the generator formed as part thereof, con-
structed and operating in the manner as herein before described and shewn in the
accompanying drawings.
L
2. In an acetylene gas lamp having the generator formed as part thereof, arrang-
ing the water tank A above the calcium carbide chamber B and connecting the two
together by the screwed ring C, substantially as herein before described and shewn
in the accompanying drawings.
3. In an acetylene gas lamp having the generator formed as part thereof, the
arrangement and construction of the valve E, whereby the water supply is cut
off when the pressure of gas exceeds that of the water, substantially as hereinbefore
described and shewn in the accompanying drawings.
Dated this 20th day of November 1897
JOHNSONS,
Applicant's Agents, 115, St. Vincent Street, Glasgow.