Improvements relating to Carbide Cartridges
Year: 1898

page_text: Date of Application, 21st Sept., 1898
Complete Specification Left, 24th Mar., 1899-Accepted, 27th May, 1899
PROVISIONAL SPECIFICATION.
Improvements relating to Carbide Cartridges
We, Boo HENNING WALLIN, of Chalmerska Institute, Engineer, and BARON
RICHARD DE WENDEL, of Kungsportsavenyen 2B, both of Gothenburg, in the
Kindom of Sweden, Engineer, do hereby declare the nature of this invention
to be as follows:-
:-
The present invention relates to so called carbide cartridges for use in
acetylene generators. They consist of weak cylindrical paper shells whose ends
are folded up or closed by means of lids. They are filled with carbide reduced
to pieces and sifted to pass through a mesh of about 4mm. It is essential that
the carbide reduced to pieces or pulverised should be finely distributed. Large
pieces of carbide are not applicable because they deliver the gas more slowly.
The side walls of the cartridges, consisting entirely of unsized paper, let the water
penetrate which is very essential because the development of gas should begin
within two or three seconds and be entirely finished within perhaps twenty seconds.
The cartridges differ essentially herein from others known till now, having water
tight side walls, these latter do not fulfil requirements with regard to the time
of gas delivery. A mass of lime paste is soon formed preventing further entrance
of water at the end of the cartridge and causing quick cessation of the develop-
ment of gas after only perhaps a fifth of the contents of the cartridge has been
used but the present carbide cartridges explode or extrude in the direction of
their length within a few seconds and in a third of a minute they deliver all the
gas. If covers are used instead of folding up the edges it is better to make
them of paste board pasted fast around the edge. We do not claim a general
protection for shells filled with carbide but only for those enclosing the carbide
within porous paper unprovided with openings.
Dated this 21st day of Santambian 1000
HERBERT HADDAN & Co.,
Agents to Applicants.
Improvements relating to Carbide Cartridges.
We, Boo HENNING WALLIN, of Chalmerska Institute, Engineer, and BARON
RICHARD DE WENDEL, of Kungsportsavenyen, 2B, both of Gothenburg, in the
Kingdom of Sweden, Engineer, do hereby declare the nature of this invention
Price Sd1

page_text: and in what manner the same is to be performed to be particularly described
and ascertained in and by the following statement: -
The present invention relates to so called carbide cartridges for use in
acetylene generators. They consist of weak cylinder like paper shells, whose
ends are folded up or closed by means of lids. They are filled with carbide
It is
reduced to pieces and sifted, to pass through a mesh of about 4 mm.
essential that the carbide reduced to pieces or pulverized should be finely distri-
buted. Large pieces of carbide are not applicable because they deliver the gas
more slowly. The side walls of the cartridges, consisting entirely of unsized
paper,
let the water penetrate, which is very essential because the development
of gas should begin within two or three seconds and be entirely finished within
perhaps twenty seconds. These cartridges differ essentially herein from others
known till now, having water tight side walls, these latter do not fulfil require-
ments with regard to the time of gas delivery. A mass of lime paste is soon
formed preventing further entrance of water at the end of the cartridge and
causing quick cessation of the development of gas after only perhaps a fifth of
the contents of the cartridge has been used, but the present carbide cartridges
explode or extrude in the direction of their length within a few seconds and in
a third of a minute, or at most one minute, they deliver all the gas. If covers
are used instead of folding up the edges it is better to make them of paste board
pasted fast around the edge.
We do not claim a general protection for shells filled with carbide but only
for those enclosing the carbide within porous paper unprovided with openings.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed we declare that what we
claim is:
Porous carbide cartridges for acetylene gas manufacture consisting of cases
of unsized porous paper filled with fine pulverised sifted calcium carbide, the
grade of porosity being so regulated, that the development of gas is finished
within, at most, one minute after the cartridge has been put into water.
Dated this 24th day of March 1899.
HERBERT HADDAN & Co.,
Agents to Applicants,
18, Buckingham Street, Strand, W.C., London.