Improvements in Acetylene Lamps and in means for Charging the same.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Acetylene Lamps and in means for Charging
the same.
I, ETTORE FRANCETTI-SCHIERONI, of 25, New Broad Street, in the City of
London, Merchant, do hereby declare the nature of this invention to be as
follows:
-
According to this invention the carbide is supplied to the lamp in a cartridge.
The cartridge case is similar to those used for sporting guns consisting of a tube
of cardboard, metal or the like, preferably flanged at one end.
This case is
provided with a longitudinal wick which may be enclosed in an inner perforated
tube. The base of the cartridge case has a hole in it closed by a cork or stopper
through which passes the wick. When the case has been filled with carbide the
front end is closed with waterproof paper or like material.
The lamp consists of two concentric tubes fitting into each other. The inner
tube opens into a hollow cap fixed to it and this cap fits onto and closes the outer
tube. A pipe connected to the burner leads out of the hollow cap. The annular
space between the tubes forms a water chamber and the cartridge case fits the
inner tube.
When it is desired to use the lamp the front end of a cartridge is opened and
the cartridge is pushed into the inner tube. Water is put into the outer tube,
and the inner tube is put into the outer tube.
Dotad this 24th down of talion 1000
Improvements in Acetylene Lamps and in means for Charging
the same.
I, ETTORE FRANCETTI-SCHIERONI, of 25, New Broad Street, in the City of
London, Merchant, do hereby declare the nature of the said 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 improvements in acetylene lamps and in means for
charging the same.
According to this invention the carbide is supplied to the lamp in a cartridge.
The cartridge case is similar to those used for sporting guns consisting of a tube
of cardboard, metal, or the like, preferably flanged at one end. This case is
Din 077

page_text: provided with a longitudinal wick which may be enclosed in an inner perforated
tube. The base of the cartridge case has a hole in it closed by a cork or stopper,
through which passes the wick.
When the case has been filled or charged with carbide, the front end is closed
by a stopper preferably covered of waterproof paper or like material.
The lamp consists of two concentric tubes fitting into each other. The inner
tube opens into a hollow cap fixed to it and this cap fits on to and closes the outer
tube. A pipe connected to the burner leads out of the hollow cap.
The annular
space between the tubes. forms a water chamber and the cartridge case fits the
inner tube.
When it is desired to use the lamp, the front end of a cartridge is opened and
the cartridge is pushed into the inner tube.
Water as the hydraulic seal and saturator is put into the outer tube, preferably
before the inner tube is put in position.
My invention will be clearly understood by reference to the annexed drawings.
Figure 1 sectional elevation of the cartridge as I construct it with the outer
flange as part of the base and with a stopper at each end, one stopper retaining
the central perforated or meshed tube and the central wick in position-and the
other to hermetically enclose the calcium carbide from contact with the atmo-
sphere while in store.
Figure 2 sectional elevation of the cartridge or calcium carbide container within
my improved lamp which I show as a cycle lamp for convenience.
A, case of cartridge of tubular shape made of cardboard, metal, or the like. If of
cardboard or of stiff paper it can be strengthened by a thin metallic cover if so
desired. B, the base flange of the tube A with an exterior shell C of such depth that
when inserted into the lamp as shown at Figure 2, the cartridge is centralised and
fixed in a secure manner. D, base stopper of cork or other material squeezed in
tightly to close that end, said cork or like stopper D having a central hole for
locating the lower end of the wick tube E. Di top end stopper.
The wick tube E may be a plain porous or of perforated or meshed material,
such as of fine wire of sufficient substance as to stand vertically and retain the
wick within it, the ends of the wick protruding slightly to ensure freedom of
suction of the outside water for saturating the calcium carbide for generating
the gas for lighting purposes. G, G, are india rubber, waterproof paper, or
other covers over the ends of the cartridge, Figure 1, to preserve the contents of
the cartridge as before mentioned, which covers G, G¹, are removed or torn away,
and the top cork or stopper removed when the cartridge is placed into the lamp.
I have only shown the cartridge partly charged with calcium carbide which
will give sufficient light for an ordinary bicycle run, but it may be further or
fully charged according to the length of time for which the light is required.
The lamp consists of two concentric tubes H, H', one H forming the outer
shell with base I, the inner one H' is in a piece with the cap or dome J, the lower
end of which tube H¹ fits within the flange C of the cartridge base to make the
joint watertight.
It will be seen by the section, Figure 2, that no gas can escape through the
water which is placed between the two concentric tubes H, Hi, to issue and
escape from the flange joint K but is received by the cap or dome J from whence
it can flow by the bent outlet tube L to the nipple or burner proper M, which
for reflective purposes is arranged within the cone or bell shaped reflector N:
the reflector also protects the light from gushes of air. This cone or bell shaped
reflector and flame protector N is provided with a back blade P for insertion into
the socket Q fixed to the gas supply tube L and is easily removable therefrom for
cleansing purposes. The glass R is in the bezel ring S fitted and held in posi-
tion by the spring clipping devices T of which there may be three.
The lamp is capable of suspension as a head lamp from the L iron of a cycle
engaging the back socket U of the parallel back frame Y in the usual manner.

page_text: Having now particularly described and ascertained the nature of the said
invention. and in what manner the same is to be performed I declare that what
I claim is:-
1. The construction of cartridge shape of calcium carbide container A with
base flange C, end stoppers D, D', central wick F, as shown on the annexed
drawings.
2. An acetylene gas lamp consisting of concentric tubes H, H', one belonging
to the base I and the other to the dome cap J from which the generated gas can
be led by bent tube L to nipple M as represented at Figure 2 of the annexed
drawings, the gas generator being hydraulically sealed from the outer tube H,
as set forth.
m
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Ettore Francetti-Schieroni.