Improvements in the Production of Cyanides.
Year: 1893

page_text: Date of Application, 27th June, 1893
Complete Specification Left, 27th Mar., 1894-Accepted, 5th May, 1894
PROVISIONAL SPECIFICATION.
Improvements in the Production of Cyanides.
We, JAMES ADDIE of 144 Saint Vincent Street, in the City of Glasgow,
Ironmaster, JOHN CUNINGHAME of 127 Saint Vincent Street, aforesaid, Ironmaster,
and WALTER MACFARLANE, Fellow of the Institute of Chemistry, Glengarnock,
in the County of Ayr, do hereby declare the nature of this invention to be as
follows:-
This invention has for its object the production of cyanides and their recovery
in a dry or comparatively dry state and it consists in charging a furnace, constructed
preferably after the manner of a blast furnace and lined with dolomite or other
basic or neutral lining, with coke or other carbonaceous fuel and pearl ash or other
alkali and introducing the hot blast. A high temperature results and potassic
cyanide, or other cyanide corresponding to the alkali employed, produced at that
temperature is carried by the force of the blast through an outlet formed at a
suitable level into a condenser or series of cooling pipes or chambers where the
cyanide is deposited and collected.
Dated this 26th day of June 1893.
CRUIKSHANK & FAIRWEATHER,
62, St. Vincent Street, Glasgow, Agents.
COMPLETE SPECIFICATION.
Improvements in the Production of Cyanides.
We, JAMES ADDIE of 144 Saint Vincent Street, in the City of Glasgow,
Ironmaster, JOHN CUNINGHAME of 127 Saint Vincent Street, aforesaid, Ironmaster,
and WALTER MACFARLANE, Fellow of the Institute of Chemistry, Glengarnock,
in the County of Ayr, 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 has for its object the production of cyanides and their recovery
in a dry or comparatively dry state and it consists in charging a furnace, constructed
preferably after the manner of a blast furnace and lined with dolomite or other
basic or neutral lining, with coke or other carbonaceous fuel and pearl ash or other
alkali and introducing the hot blast. A high temperature results and potassic
cyanide, or other cyanide corresponding to the alkali employed, produced at that
temperature is carried by the force of the blast through an outlet formed at a
suitable level into a condenser or series of cooling pipes or chambers where the
cyanide is deposited and collected.
The accompanying diagram illustrates apparatus adapted for carrying out the
invention. A, the furnace having blast pipes B, and outlet C, from which
the cyanide is carried through a collecting box D, and into the condenser pipes E,
in boxes F at the lower end of which the cyanide is deposited and collected in the
dry state.

page_text: 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―
The production and recovery of cyanides in a dry state by the process and in the
manner herein before described.
Dated this 24th day of March 1894.
CRUIKSHANK & FAIRWEATHER,
62, St. Vincent Street, Glasgow, Agents.