Improvements in and connected with Gas Generating and Burning Lamps, Lanterns and the like.
Year: 1897

page_text: Date of Application, 16th Dec., 1897-Accepted, 12th Mar.,
1898
COMPLETE SPECIFICATION.
Improvements in and connected with Gas Generating and Burning
Lamps, Lanterns and the like.
I, TEOMAS BRADSHAW JACK, of 38, High Street, and 20, Linenhall Street,
Ballymena, in the County of Antrim, Ireland, Cycle Merchant, 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 gas generating and burning lamps, lanterns and the like
and has for object to provide lamps of convenient constructions that shall produce
acetylene or similar gas in predetermined quantities and as fast as the gas is
consumed while the lamps are in use, and to equip such lamps with means to protect
the gas generating chamber against heat.
In the accompanying drawings,
Fig. 1 is a longitudinal vertical central sectional elevation of a cycle or vehicle
lamp made according to my invention.
Fig. 2 is a cross section of the support securing the liquid holding chamber to
the lamp body.
Fig. 3 is a longitudinal vertical central sectional elevation of a lamp intended for
household and like purposes.
Fig. 4 is a front elevation of the liquid holding chamber of the lamp shown in
Fig. 3, and
Fig. 5 is a top plan view of the gas-producing material chamber of the lamp
illustrated by Fig 3.
The combustion chamber A is by preference barrel shaped and is provided with
a door b composite of an annular metal frame supporting a lens c, and being
connected at one side by a suitable hinge to the body of the lantern, and adapted to
be secured in closed position by a latch d of usual construction which is mounted on
the body of the lantern and engages the opposite side or edge of said door.
The side walls of the combustion chamber are formed with the usual small
openings in which are secured in any desired and usual manner colored lenses or
jewels e. f, fl are series of small air openings in the walls of the combustion
chamber which serve to supply the said chamber with air, as also to allow the
heated air to escape.
The body of the chimney is an upwardly extending, outwardly flaring, tubular
structure, the lower end g of which is seated in and secured to the lip of a circular
opening in the top of the combustion chamber, and the upper end of which is
formed with a vertical walled circumferential rim h.
,, are series of small openings formed in the chimney, which allow the
heated air to escape.
j is the cover of the chimney which is mounted upon the latter in any desired
and usual manner, as, for instance, upon two, three or more narrow arms forming
part of the straight rim h. These arms are not shown in the drawing. In this
manner the heated air will likewise escape through the space k left between the
cap or cover j and the vertical rim h of the chimney.

page_text: may be med internally with asbestos or other reproor
material being a bad conductor of heat.
is the reflector secured in any preferred manner to the back wall of the
combustion chamber.
m is the liquid holding chamber which may be made of tin, brass or any other
suitable metal. As shown in the drawing it is cylindrical but I do not limit myself
to this shape.
n is a neck adapted to be closed by means of a stopper o, or a threaded cap
adapted to pass over or into said neck, in which case the latter would have to be
screw threaded.
One, two or more small openings are formed at p in the top of the liquid holding
chamber to maintain the air pressure on the liquid.
9 is the support which secures the liquid holding chamber in position, and q¹, q².
are two annular portions of said support into which the liquid holding chamber
is passed and to which said chamber is soldered or otherwise fixed. It goes
without saying that if I make the liquid holding chamber of a shape different to
that shown and mentioned, the portions q², q² of the support will take the
shape of said receptacle m.
The ends q³, q are soldered, riveted or otherwise fixed to the back of the
combustion chamber.
1, 2, 3 are openings in the support 9 which allow the air to circulate
through the support, thereby cooling it should it get heated.
s is the gas generating chamber adapted to receive calcium carbide or other
analoguous gas producing material.
Said gas generating chamber is or may be made of the same material as that
used in the construction of the liquid holding chamber, and is adapted to be closed
by means of a threaded cap.t, having a milled flange u.
vis the top of the gas generating chamber provided with a circumferential
flange w and a central tube x.
y is both an air supply and a cooling chamber having an inwardly or outwardly
projecting circumferential flange z adapted to be soldered or riveted to the bottom
of the combustion chamber.
The lower end of said air supply chamber y is secured to the gas producing
material chamber as shown in Fig. 1.
6x, bxx are series of slots formed in the said air supply chamber which serve to
supply air to the said chamber, which air cools the chamber as it circulates through
it and in a measure prevents heat being communicated to the gas generating
chamber.
care a series of small perforations in the bottom of the combustion chamber
which allow the air to pass in small jets from the air supply chamber into the
combustion chamber.
dis a tube made of indiarubber or some fire proof material being a bad
conductor of heat, and, ex is the burner; the former having for object to prevent the
heat of the burner descending to the gas generating chamber.
f is a tube connecting the liquid holding chamber with the gas generating
chamber and g* is a tap adapted to be turned one way when the lamp is required
for use and the other way when the lamp is not in use.
This tube should be of such capacity that, when the tap is fully open, just enough
water shall pass into the gas producing material chamber, per minute of time, to
produce acetylene gas as fast as and not faster than such gas is consumed by the
flame. It will be understood that the quantity of water required varies with, the
quantity of gas required to feed the flame and with the kind of burner used.
With an economical burner from 5 to 12 drops of water, per minute of time.
will suffice to produce sufficient gas to keep a cycle or vehicle lamp alight until the
gas producing material in the lamp is exhausted.
It will be understood that the water supply can be regulated by using a tube that
shall only allow a certain number of drops to pass into the gas producing material

page_text: chamber per minute of time, or by making the tap answer the same purpose
(or by only partly opening the tap), in which cases the dimensions of the
tube are not of very great importance.
A cycle lamp made according to my invention is and a vehicle lamp may be
provided with a bracket of convenient and usual construction fixed to the back
of the liquid holding chamber or to the back wall of the lamp body, as practised.
with other lamps of ordinary make.
Having now described the manner in which I propose to construct a cycle or
vehicle lamp according to my invention, I will proceed to describe, with reference
to Figs. 3, 4 and 5 the manner of constructing a lamp for household and like
purposes.
h is the gas producing material chamber and the liquid holding chamber.
is a neck on the top wall of the said chamber i* enabling the receptacle to be
filled with water and * is the stopper, which may be replaced by a screw threaded
cap, as already described.
The top wall of the receptacle it is likewise formed with one, two or more small
openings for the purpose herein before mentioned.
1x is a perforated extension of the back-wall of the lamp enabling the lamp to be
hung on a nail fixed in the wall.
mx is the reflector, which is of usual make.
n is a circular opening in the top wall of the gas producing material chamber.
ox is an upright tubular externally threaded part having a circumferential
flange p fixed upon the top wall of the gas-producing chamber and round the
opening therein already referred to.
7* is an internally threaded cap having a central tube r*. 8 is a tube made of
rubber or some fire proof material being a bad conductor of heat, for the purpose
already mentioned and t* is the burner.
ux is the tube connecting the liquid holding chamber with the gas producing
material chamber and x is the tap.
The manner in which the parts ux and v should be made has already been
described with reference to Fig. 1..
It will be understood that when the gas producing material chamber has been
filled with calcium carbide and the liquid holding chamber with water all that need
be done is to open the valve or tap, when the water will pass drop by drop into
the calcium carbide chamber and upon the gas producing material entering into
decomposition under the action of the water, acetylene gas will be formed.
lamps may be lit a few seconds after the water has been turned on; and since the
flame consumes the gas as fast as it is formed no pressure can at any time exist in
the generating parts. Therefore my lamps are perfectly safe for use.
c
The
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what 1
claim is:-
1) In a lamp, lantern or the like a liquid holding chamber substantially as
described with reference to Fig. 1 of the accompanying drawings.
2) In a lamp, lantern or the like a liquid holding chamber in combination with a
means for securing it to the combustion chamber substantially as described and
illustrated by Figs. 1 and 2.
3) In a lamp, lantern or the like a gas producing material chamber substantially
as described and shown in Fig. 1.
4) In a lamp, lantern or the like in combination with a gas producing material
chamber a combined air supply and cooling chamber substantially as described and
shown in Fig. 1.
5) In a lamp, lantern or the like a liquid holding chamber- in combination
with a gas producing material chamber substantially as described and illustrated
by Fig. 1.
6) In a lamp, lantern or the like in combination with a liquid holding chamber

page_text: -
a means for securing it to the combustion chamber, a gas producing material
chamber and a means for securing it to the combustion chamber substantially as
described and shown in Figs. 1 and 2.
7) In a lamp, lantern or the like a tube connecting the liquid holding chamber
with the gas producing material chamber and a tap substantially as and for the
purpose described..
8) In a lamp, lantern or the like a liquid holding chamber in combination
with a gas producing material chamber and a means for regulating the quantity of
water leaving the first named' chamber and entering into the last named chamber
per minute of time substantially as described with reference to Fig. 1.
9) In a lamp, lantern or the like in combination with a gas producing material
chamber a burner and a means for preventing the heat of the burner from
descending to the gas generating chamber substantially as described and shown
in Fig. 1.
10) In a lamp, lantern or the like the combination of a liquid holding chamber;
a gas producing material chamber, a combustion chamber and a chimney having
a cover lined with fireproof material being a bad conductor of heat in order to
protect the chimney against the heat generated by the flame substantially as
described and shown in Fig. 1.
11) In a lamp, lantern or the like the combination of the various parts substan-
tially as described with reference to Figs. 1 and 2 of the accompanying
drawings.
12) In a lamp, lantern or the like a gas producing material chamber substantially
as described and shown in Figs. 3 and 5.
13) In a lamp, lantern or the like a liquid holding chamber substantially
as described and illustrated by Figs. 3 and 4.
14) In.a lamp, lantern or the like in combination with a gas producing material
chamber a superposed liquid holding chamber substantially as described and shown
in Figs. 3, 4 and 5.
15) In'a lamp, lantern or the like in combination with an upright screw threaded
part such as o a cap such as q* substantially as described and illustrated
by Fig. 3:
16) In a lamp, lantern or the like the combination of the various parts
substantially as described with. reference to Figs. 3, 4 and 5 of the accompanying
drawings.
7 T
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1000