Improvements in and relating to Acetylene Gas Generators for Lamps.
Year: 1898

page_text: Date of Application, 25th May, 1898-Accepted, 17th Sept., 1898
COMPLETE SPECIFICATION.
Improvements in and relating to Acetylene Gas Generators for
Lamps.
I, JAMES BARTLETT, of 20, Sponden Road, South Tottenham, in the County of
Middlesex, Plumber and Electrician, do hereby declare the nature of this inven-
tion 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 a new or improved acetylene gas generator applicable
and adaptable to bicycle, carriage household and other lamps and lanterns and
for lighting purposes generally.
.
The light produced from the gas so generated is free from smoke and is of a
clear powerful and white nature.
The invention is represented on the annexed sheet of drawings, the explanation
of which drawings is as follows:
Figure 1 is a sectional elevation of the outside case of my improved acetylene
gas generator which can be made of zinc or any other suitable metal. This case
is divided into two chambers the one marked "H" being for storing or accumulat-
ing the gas when generated and also for receiving at the bottom the waste or
exhausted calcium carbide from the generator, which exhausted carbide finds its
way through holes on the outside rim of the generator as hereinafter described.
At the bottom of the said chamber "H" is an internally threaded rim "M" to
receive the brass screw cap "A¹," Figure 2.
"
The second chamber at the top of the case marked
bottom as shewn in Figure 1 and is filled with wadding, tow, or other packing
"A" is perforated at the
material (wadding preferred) for regulating and purifying the gas. This chamber
has an ordinary acetylene burner "A" screwed into an aperture at the top of the
said chamber.
Figure 2 is a sectional elevation showing the generator. This can be made of
zinc or any other suitable metal and fits into the inside of the said case "H"
shewn in Figure 1.
This generator is arranged and operates in the following manner :-
It is divided into two separate receptacles marked "W
>> and
X" which are
each arranged for the reception of water. The space marked "C" of the outer
chamber "C" is for the reception of the calcium carbide. The conicle receptacle "X"
s provided with the screw extension or tube "X1" which screws into the recep-
acle "W." This screw extension or tube is open at the end to allow the water
o enter the receptacle "X" from the chamber "W."
The chamber
"
W" is perforated at "W" as shewn and may be wrapped round
so as to allow the water
with tow, wadding or any other packing material "W2
"
laced within to soak slowly through to the carbide and the said packing material
eing fastened with zinc straps to keep it firm.
The annular space part "D" of the chamber "W" serves for the accumulation
f air which is used for forcing the water from the chamber
66 W"
to the recep-
acle "X."

page_text: The screw cap
"A1" screws into the rim "M" of the case
the generator to the latter.
H" when fitting
The screw cap "B" is for the purpose of filling water into the chamber "W"
the air being forced into the space "D" as the cap is screwed up.
One or more small perforated holes are made in the receptacle "X" at the points
marked "E" and the outer chamber "C" is also perforated at the sides as shewn
at "C."
"A¹."
A rubber band or washer "R" is placed above the flange of the screw cap
This is for the purpose of making the connection of the generator and case air-
tight.
For the purpose of producing the gas in my improved generator I place within
the chamber "C" Figure 2 a quantity of the best calcium carbide sufficient to
fill up the space in the said chamber to within about half an inch from the top
by partially unscrewing the receptacle "X." I then tightly screw down the
receptacle "X" and fix the generator within the case by means of the screwed
rim "M" in the bottom of the case and the screw cap A¹" securing the two
parts tightly together. I then undo the small screw cap "B" at the bottom of
the generator and fill the chamber "W" within the generator with water after-
wards replacing and tightly screwing the said screw cap "B" in position.
The gas is generated in the following manner :-
cap
66
After the generator has been placed within the case in the manner
aforesaid and the water has been received into the space "W" and the screw
"B" tightly screwed up the pressure of the air in the space marked "D" "D"
forces through the holes E" a small quantity of water upon the calcium carbide
in the chamber marked "C" and the water from the chamber "W" also soaks
through the holes “W” and the packing "W2" upon the said carbide and thus
the carbide is caused to generate and produce the gas.
The gas thus generated passes through the perforations as shewn on the sides
of the generator in Figure 2 and accumulates in the outer case shown in Figure 1.
Thence the gas passes through the packing material in the upper part of the
said chamber and from thence to the burner and in the course of its passage
through the said packing material the gas is purified and the supply regulated."
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 improved acetylene gas generator forming a lamp for bicycles and other
purposes comprising an outer case for storing the gas provided with a burner and
an inner chamber forming the generator containing carbide of calcium and pro-
vided with two receptacles for containing water which passes through perforations
to the carbide chamber the gas from which also passes through perforations into
the outer case substantially as herein described.
2. In an improved acetylene gas generator for lamps the combination of an
outer case such as H formed with an upper chamber A filled with packing and
fitted with a burner A2 and an inner perforation chamber C provided with per-
forated receptacles or chambers W, X, and a screw cap A' engaging with the
screwed rim M, of the case H the chamber W being fitted with a screw cap B for
filling the same with water substantially as described and for the purposes specified
3. The improved acetylene gas generator for lamps substantially as described
and shewn in the drawings.
J. H. MUNDELL,
21, Godliman Street, London, E.C.,
Solicitor for the Applicant.