Year: 1886

page_text: Date of Application, 7th Dec., 1886.
Complete Left, 5th Sept., 1887.
Complete Accepted, 14th Oct., 1887.
1, ALBERT WERNER CRONQUIST, Stockholm, Sweden, Civil Engineer and I CARL
OLOF LUNDHOLM, Polmont Cottage, Polmont, Stirlingshire, Technical Chemist do
hereby declare the nature of this invention to be as follows:-
The manufacture of a Fuse, intended to be used in mines and quarries etc. in the
same way as common Safety Fuse, by treating Abel's Gun-cotton, Collodion Cotton,
or a mixture of them, with Nitrobenzol or other Solvents; the gelatine produced is
made into strings by suitable means and the Nitrobenzol, or other solvents, is extracted
with Spirits or other fluids, or vapours.
Glycerine, Mineral or Organic Oils or fatty matters, as well as oxidizing matters,
may be introduced into the material or the ready fuse, in order to make it more
pliable and insure a more complete combustion. The Fuse may also be joined to
fibrous matters etc. in order to make it stronger, or it may be put into tubes of wire
gauze, India Rubber, Metals, or other materials, with or without water, for making it
safe in firy mines.

page_text: I ALBERT WERNER CRONQUIST of Stockholm, Chemist, and I CARL OLOF LUNDHOLM,
Stevenston, Ayrshire, Chemist 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:-
The manufacture of a fuse intended to be used in mines, quarries etc. in the same
way as common safety fuse.
If Abel's Guncotton, collodion cotton, or any other kind of Nitrocellulose, or a
mixture of them, be treated with Nitrobenzol or other solvents, a gelatine is produced
which can easily be made into strings, tubes or tapes consisting of the Nitrocellulose
dissolved and the solvent. In order to give consistency to the Fuses thus obtained, it
is necessary to remove the solvent, partly or wholly which is done by means of Spirits
or other fluids, or by vapours. In the latter case the fuses are laid out on boards,
netting, canvas or similar arrangement; or they are hung in coils or otherwise, so as
to be accessible to the vapours produced either by heating Spirits, Benzol, Gasoline or
other suitable fluids, or by passing a current of air through the said fluid or fluids.
.The process can be made continuous by making provisions for passing the fuses
gradually through the vapours, taking care to regulate the speed according to the
degree of extraction desired. The vapours after passing the fuses may be condensed
into fluids more or less completely in ordinary ways.
The solvent may also be extracted by imbedding the fuses in powders or doughs,
which will absorb the solvent more or less and produce a fuse which will burn with
greater or less velocity depending on the degree of extraction.
By introducing Glycerine, Mineral-or Organic oils or fatty matters, Tar, Tar-oils
or Hydro carbons etc. into the original material, or into the solvent, or into the fuse
during any stage of its manufacture, or afterwards, the fuse may be made more
pliable.
In order to insure complete combustion, oxidizing matters such as Nitrates,
Chlorates, Perchlorates, Permanganates, Chromates, or Bichromates, in powders or
solution, may be introduced into the original material, or into the solvent, or into the
fuse during any stage of its manufacture, or afterwards.
In order to increase the strength of the fuse, the materials, or the fuse in any stage
of manipulation, may be combined with fibrous matters open or spun, or may be put
into tubes of wire gauze, India Rubber, Metals, or other materials, with or without
water envelope to insure safety in firey mines, or if desired may be covered with
waterproof coating of any nature.

page_text: The advantages of fuses of this system are, that they will not be affected by damp,
that they will burn under water and that their string-like nature and toughness make
it possible to tie pieces together to any desired length.
Having now particularly described and ascertained the nature of our said invention,
and in what manner the same is to be performed, I declare that what we claim is :
The extraction wholly or partially of the solvent from the Nitrocellulose as afore
mentioned, this extraction to be effected by means of Spirits or other fluids, or
vapours, or by imbedding the fuses in powders or doughs of suitable material.
Dated this 3rd day of September 1887.
CARL OLOF LUNDHOLM,
Agent for Applicants.