Year: 1885

page_text: I, WILLIAM COCHRANE of St Johns Chambers Newcastle upon Tyne in the
County of Northumberland, Mining Engineer seek leave to amend the speci-
fication of my application for Letters Patent, No. 5003 of 1885, as shown in
red ink in the copy of the original specification hereunto annexed.
My reasons for making this amendment are as follows:-
That since filing the said Specification I have been advised that the subject.
matter of the invention has been too broadly stated and claimed therein.

page_text: DECISION.
Having heard Mr. Imray as agent for Applicant and Mr. Willcox as agent for
Opponent, I allow lines 20, 21, and 22 to be struck out, but, I cannot accede to
the proposed amendment of the claim, as in the original claim the angular or
wedge shaped end only of the mould is claimed and the proposed amendment
would (if allowed) alter the claim so as to make it claim the entire configura-
tion of the mould and, therefore, the proposed amendment would in my opinion
make the Specification as amended claim an invention substantially larger than
the invention claimed by the original Specification and cannot be allowed.

page_text: I, WILLIAM COCHRANE, of St Johns Chambers, Newcastle-upon-Tyne in the
County of Northumberland, Mining Engineer do hereby declare the nature of my
invention for "AN IMPROVEMENT IN MOULDS FOR COOLING AND DISCHARGING
SLAG and in what manner the same is to be performed to be particularly described
and ascertained in and by the following statement :—
"
My invention relates to that construction of moulds for receiving the liquid slag
from blast furnaces in which a core is employed for facilitating the cooling and
breaking up of the mass. According to my present improvement, I construct such
cores of the shape shewn in sectional clevation and plan respectively at Figs 1
and 2 of the accompanying drawing, that is to say the core A is made with a semi-
circular or otherwise rounded shape at a, and of angular shape at a¹. By this
construction a larger mass of slag can be cooled in the same size of outside casing B
also the core is rendered of greatly increased strength to withstand the strains to
which it is subjected in discharging the slag when the bogie with the slag and core
thereon, is run against bumping blocks, and the angular part a' of the core operates
with a wedging action upon the part of the slag block surrounding it, thereby
effectually breaking it up into fragments, while at the same time the sloping
sides al prevent any part of the mass from remaining upon the bogie, as has been
found to be the case with cores such as are at present employed.
Although--prefer-to-make-the-part-a-of-a-rounded-shape, yet-it-will-be-evident
that-it-may-be-of other configuration, so long as the angular-or-wedge-shape-of
the-part-a-be-retained.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that I make
no general claim to the employment in cooling and breaking up blast furnace slag, of
casings or receptacles provided with plugs, cores or projections or combinations
thereof, such as are described in the Specification N° 3812 of 1880 but, what
I claim is
1. Constructing cores for slag moulds of an angular or wedge shape on the one
side and of rounded shape on the opposite side whereby they are rendered of
increased strength and are made to operate with a wedging action upon the slag
and to effect the complete discharge thereof, substantially as herein described.
Dated this 22nd day of April 1885.
ABEL & IMRAY,
Agents for the Applicant,
28, Southampton Buildings,
Chancery Lane, London, W.C.