Year: 1889

page_text: Date of Application, 14th Mar., 1889
Complete Specification Left, 18th Mar., 1889
Complete Specification Accepted, 27th Apr. 1889
NORMAN CHARLES COOKSON, Bank Chambers, Sandhill Newcastle on Tyne, Lead
Manufacturer do hereby declare the nature of this invention to be as follows:-
By means of appropriate fluxes or deoxidizing solutions iron may be coated with
tin or with zinc as is well understood, but it has been hitherto impossible, so far as I
know and believe, to coat it with antimony. Now I, by my invention, accomplish
this object as follows. I first apply to the iron a coating of tin or of zinc or other
suitable metal and then I apply the coating of antimony, which, altho' it would not
adhere to the iron by itself, will, I find, adhero to the iron when coated as I have
described with tin or other metal. For the purpose of coating the inside of a vessel with
antimony, I first apply the preparatory coat by any convenient means, and I then
may use a core, within the vessel, so much smaller than the vessel as is required to
give the desired thickness to the coating of antimony, and pour the melted antimony
into the space so formed; when, if there be no undue disproportion between the
thickness of the vessel and the thickness of the coat of antimony, and, if the heat
of the melted antimony be adequate, the coat will be found perfectly adherent.
When such disproportion as I have referred to has to be provided for, 1 heat
the iron vessel to the required degree before casting the antimony into it. Mutatis
mutandis the outside of a vessel is coated in a similar way or if a very thin coating
of antimony be required, a vessel already coated with tin or other metal may be
dipped in melted antimony as is done in what is called galvanizing.

page_text: I, NORMAN CHARLES COOKSON, Bank Chambers Sandhill, Newcastle-on-Tyne Lead
Manufacturer, do hereby declare the nature of this invention and in what manner
the same is to bo performed, to be particularly described and ascertained in and by
the following statement :-
By means of appropriate fluxes or deoxidizing solutions iron may be conted with
tin or with zinc as is well understood but it has been hitherto impossible so far as I
know and believe, to coat it with antimony. Now I by my Invention accomplish
this object as follows:-L first apply to the iron a coating of tin or of zinc or other
suitablo metal, and then I apply the coating of antimony, which, altho' it would not
adhere to the iron by itself will, I find, adhere to the iron when coated as I have
described with tin or other metal. For the purpose of coating the inside of a vessel
with antimony, I first apply the preparatory coat by any convenient means, and I
then may use a core, within the vessel, so much smaller than the vessel as is required
to give the desired thickness to the coating of antimony and pour the moltod
antimony into the space so formed; when, if there be no undue disproportion
between the thickness of the vessel and the thickness of the coat of antimony and,
if the heat of tho melted antimony be adequate, the coat will be found perfectly
adherent. When such disproportion as I have referred to has to be provided for I
heat the iron vessel to the required degree before casting the antimony into it.
Mutatis mutandis, the outside of a vessel is coated in a similar way. Or if a very
thin coating of antimony be required a vessel already coated with tin or other metal
may be dipped in melted antimony as is done in what is called galvanizing,
Having thus described the nature of my Invention I will proceed to describe the
manner in which the same is to be operated, as follows :-
The disproportion which I have referred to as a possible cause of inadequate
adherance of the coating of antimony to even a previously coated iron vessel arises
from the iron vessel being so thick or so largo in relation to the quantity of antimony
cast into or on it that the absorption of heat is so great that the preparatory coat of
tin or zinc or other metal does not melt, and the manner in which disappointment in
this way is to be avoided is to calculate from the actual and specific heat of the metals
employed whether the resultant heat is adequate to fuse the metal with which the

page_text: iron is first coated to the requisite degree, so that it may to some extent combine
with the antimony.-If the proportion of iron in relation to the proportion of
antimony is too great the iron vessel must have additional actual heat imparted to it.
Having now particularly described and ascertained the nature of my said Inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :
Annlving to iron substantially as described an adherent coating of antimony.
JAMESON & SCHAEFFER,
Agents for Applicant.