Improvements in the Manufacture of Coal Briquettes.
Year: 1893

page_text: Date of Application, 23rd Mar., 1893
Complete Specification Left, 22nd Dec., 1893-Accepted, 27th Jan., 1894
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Coal Briquettes.
We, GEORGE SCOBELL ELLIS, of 30, Blessington Road, Lee, in the County of
Kent, and ARTHUR MARLIN DOLTON, of 39, Lee Road, Blackheath, in the same
county, Timber Merchants, do hereby declare the nature of this invention to be
as follows:-
This invention consists of an improved manufacture of artificial fuel in the form
of briquettes or blocks; the objects of the invention being to produce briquettes
better adapted to withstand the action of the weather and the rough treatment
to which they are subject during transport by rail and otherwise.
In carrying out our invention, we reduce the coal to a coarse powder and mix
with it Portland cement. We find that from cwt. to 1 cwt. of cement per ton of
coal is a suitable proportion. Water is added until the mixture becomes a thick
paste. It is then moulded into briquettes and allowed to dry. The briquettes
may, however, be dried by artificial means.
If preferred, a little clay may be mixed with the coal and cement; a suitable
proportion being from cwt. to cwt. per ton of coal.
Dated the 23rd day of March 1893.
G. G. M. HARDINGHAM,
191, Fleet Street, London, E.C., Chartered Patent Agent.
COMPLETE
SPECIFICATION.
Improvements in the Manufacture of Coal Briquettes.
We, GEORGE SCOBELL ELLIS, of 30, Blessington Road, Lee, in the County of
Kent, and ARTHUR MARLIN DOLTON, of 39, Lee Road, Blackheath, in the same
county, Timber Merchants, 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:-
This invention consists of an improved manufacture of artificial fuel in the form
of briquettes or blocks; the objects of the invention being to produce briquettes
better adapted to withstand the action of the weather and the rough treatment to
which they are subject during transport by rail and otherwise.
In carrying out our invention, we reduce the coal to a coarse powder and mix
with it Portland cement. As the result of experiments, we have found that the
admixture of from 1 cwt. to 2 cwts. of cement per ton of coal gives, on the average,
the best results. Water is added until the mixture becomes a thick paste. It is
then moulded into briquettes and allowed to dry. The briquettes may, however,
be dried by artificial means.
If preferred, a little clay may be mixed with the coal and cement; a suitable
proportion being from cwt. to cwt. per ton of coal.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we claim :-
1. The manufacture of briquettes composed of powdered coal compounded with
Portland cement, substantially as and in the proportions herein set forth.

page_text: 2. In the manufacture of briquettes composed substantially of powdered coal,
the addition of a suitable proportion of cement as a binding medium, whereby the
briquette is rendered better adapted to withstand the action of weather and the
effect of rough treatment.
Dated the 21st day of December 1893.
G. G. M. HARDINGHAM,
191, Fleet Street, London, E.C., Chartered Patent Agent.