An Improved Compound for use in the Manufacture of Armour- plates, and for similar purposes.
Year: 1892

page_text: Date of Application, 17th Dec., 1892
Complete Specification Left, 18th Sept., 1893-Accepted, 21st Oct., 1893
PROVISIONAL SPECIFICATION.
[Communicated from abroad by HAYWARD AUGUSTUS HARVEY, of 455, Main
Street, Orange, New Jersey, United States of America, Mechanical
Engineer.]
An Improved Compound for use in the Manufacture of Armour-
plates, and for similar purposes.
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent
Agents, 45, Southampton. Buildings, in the County of Middlesex, do hereby declare
the nature of this invention to be as follows:-
My invention relates to an improved compound for use in the manufacture of
armour-plates, and for similar purposes.
The principal object of my said invention is to expedite and improve the
carburization of an armour plate, in such a process, for instance, as that set forth
in the Specification of Letters Patent dated 29th September, 1891, No. 16,544,
granted to Henry Harris Lake.
During a number of years I have carried out experiments with a view to the
discovery of a carburizing material or compound capable of promoting the pro-
duction of a better result than is obtainable from the carburizing compounds
hitherto usually employed. By the said experiments I find it of great advantage
to employ, in the production of an armour-plato or in other similar operations, the
improved carburizing compound hereinafter described, that is to say :-
According to my invention take a suitable quantity of bone black which has
been employed in the manufacture of sugar in the usual and well-known manner,
and which, by repeated re-burning, has become so finely pulverulent that it is no
longer suited for use in the said manufacture, and is regarded as refuse, and I mix
the said refuse bone-black with an approximately equal bulk of wood charcoal
ground to a very fine powder, or with an equal bulk of finely-powdered coke dust,
anthracite, graphite or the like. I do not re-burn the said refuse bone-black nor
do I treat it in any way which would free it from the matters with which it has
become charged in the manufacture of sugar and which are most important
constituents of my said improved carburizing compound.
By the use of my said improved carburizing compound I am enabled to expedite
and improve in every respect, and to a considerable degree, the decremental
carburization of an armour-plate in the process described in the aforesaid Specifi-
cation of prior Letters Patent, and my said compound is applicable with equal
advantage, in other processes of carburization.
I do not limit my invention to the use of the particular proportions of the
ingredients herein specified, for the said proportions are given by way of example,
and can be varied without departing from the nature of my said invention, to suit
the circumstances under which the said improved compound is employed.
Dated this 17th day of December 1892.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.

page_text: COMPLETE SPECIFICATION.
An Improved Compound for use in the Manufacture of Armour-
plates, and for similar purposes.
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent Agents
45 Southampton Buildings, in the County of Middlesex, 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 relates to an improved compound for use in the manufacture of
armour-plates, and for similar purposes.
The object of the said invention is to expedite and improve the operation of
carburization in such a process, for instance, as that set forth with reference to the
decremental carburization of armour-plates in the Specification of Letters Patent
dated 29th September, 1891, No. 16,544, granted to Henry Harris Lake.
During a number of years, as I am informed, my correspondent has carried out
experiments with a view to the discovery of a carburizing material or compound
capable of promoting the production of a better result than is obtainable from the
carburizing compounds hitherto usually employed. By the said experiments it is
found to be of great advantage to employ, in the production of an armour-plate
or in other similar operations, the improved carburizing compound hereinafter
described, that is to say:
According to this invention I take a suitable quantity of bone black which has
been employed in the manufacture of sugar in the usual and well-known manner,
and which, by repeated re-burning, has become so finely pulverulent that it is no
longer suited for use in such manufacture, and is regarded as refuse, and I mix the
said refuse bone-black with an approximately equal bulk of wood-charcoal ground
to a very fine powder, or with an approximately equal bulk of finely-powdered coke
dust, anthracite, graphite or the like. I do not re-burn the said refuse bone-black,
nor do I treat it in any way which would free it from the saccharine matters and
other ingredients with which it has become charged in the manufacture of sugar
and which are most important constituents of the said improved carburizing.
compound. I may use animal carbon derived from any other source, in a condition
suitable for my purpose.
By the use of the said improved carburizing compound am enabled to expedite
and improve in every respect, and to a considerable degree, the decremental
carburization of an armour-plate in the process described in the aforesaid Specifi-
cation of prior Letters Patent; the said compound is applicable with equal
advantage, in other processes of carburization.
I do not limit my invention to the use of the particular proportions of the
ingredients herein specified, for the said proportions are given by way of example,
and can be varied without departing from the nature of the said invention, to suit
the circumstances under which the said improved compound is employed.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, as communicated to me by my
foreign correspondent, I declare that what I claim is :-
1. A carbonaceous compound having as an essential constituent animal carbon in
a finely pulverulent condition for the purposes spécified.
2. The improved carburizing-compound hereinbefore described, for the purposes
specified.
Dated this 18th day of Santamban 1802
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.