An Improved Process of Preparing Pine or analogous Wood for the Manufacture of Matches.
Year: 1894

page_text: COMPLETE SPECIFICATION.
An Improved Process of Preparing Pine or analogous Wood for the
Manufacture of Matches.
We, GUNNAR ELIAS CASSEL and DAVID KEMPE, of 49 Norrtullsgatan,
Stockholm, Sweden, Engineers, 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:-
Our invention relates to an improved process of preparing pine or analogous wood
for the manufacture of matches, in such a manner that it becomes susceptible of
impregnation and paraffining.
In the manufacture of matches hitherto, asp-wood has almost exclusively been
used as material for the matches. Other cheaper kinds of wood, as for instance,
pine, have been found to be less suitable, because they are of a darker colour and
contain so much of incrustrating matters that their impregnation and subsequent
paraffining become very difficult.
Our invention relates to a process of preparing the match-materials cut out of
the cheaper kinds of wood, in such a manner that the inconveniences above-
mentioned are removed.
According to our invention the match-materials, consisting of finished sticks or
of veneer, are subjected to a boiling in a solution of sulphites for instance sulphite
of magnesia or sulphite of lime or a mixture of both or of sulphate or of carbonate
of soda or in some other solution suitable for removing the incrustrating matters.
The time required for making the matches susceptible in this manner,, of
impregnation and paraffining, is about two to three hours, depending upon the
temperature and degree of concentration of the solution, whereas the proceedings
in the manufacture of wood-pulp in the same manner require a much longer time.
After the boiling the solution is drawn off, and the boiler is filled with common or
slightly heated water; the temperature then is raised to 100°, at which point it is
kept for about a quarter of an hour. The boiler is then emptied and the matches,
after being rinsed in cold water, are ready for impregnation, drying, and paraffining.
The object of the boiling and rinsing is to remove entirely from the sticks or the
veneers all salts obstructing the impregnation, and all disagreeable smell.
Pine-sticks prepared in this manner have a white colour and are fully comparable
to asp-wood sticks.
It is not the manner of removing incrustrating matters from wood, which forms
the object of our invention, but the process of preparing, by such a treatment,
materials for matches of pine or other kinds of wood comparable thereto, these
materials after such treatment, being susceptible of impregnation and paraffining,
whereby they become quite comparable to matches of asp-wood.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. An improved process of preparing material for matches of pine or analogous
wood consisting in first removing the incrustating matters from wood preferably in
the form of sticks or veneers, principally from the surface thereof, then treating
the wood by boiling in hot water and thereafter by rinsing in cold water, for the
purpose specified.
2. The herein described methods of treating pine or analogous wood for the
purpose of preparing the same for the manufacture of matches.

page_text: 3. Materials for matches treated according to the processes hereinabove
described.
Dated this 27th day of January 1894.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicants.