Improvements in Coating Iron and other Metals with Lead, and in the Alloying or Treating of Lead to Render it Suitable for this Purpose.
Year: 1892

page_text: Date of Application, 1st June, 1892
Complete Specification Left, 28th Feb., 1893-Accepted, 22nd Apr., 1893
PROVISIONAL SPECIFICATION.
Improvements in Coating Iron and other Metals with Lead, and in
the Alloying or Treating of Lead to Render it Suitable for this
Purpose.
We, FRANCIS GORDEN BATES, of 2027 North College Avenue, Philadelphia,
United States of America, Engineer at present residing at Montague Mansion,
Great Russell Street in the County of Middlesex, and WILLIAM ROBERT
RENSHAW of Phoenix Foundry, Stoke-on-Trent in the County of Stafford,
Engineer and Iron Founder, do hereby declare the nature of this invention to be
as follows
According to this invention the lead is first melted in a suitable vessel, its surface
being covered with powdered charcoal or preferably powdered brick and the
following materials are added to it in the order named :-aluminium, salt-ammoniac,
arsenic, borax or alum or other flux and cryolite.
The proportions it is preferred to employ are:-
-
Lead
Aluminium
Sal-ammoniac
Arsenic
Borax
-
or preferably,
Alum or similar flux
Cryolite
-
-
-
-
100 lbs.
5 lbs.
-
2 oz.
oz.
-
oz.
1 lb.
-
1 lb.
In some cases especially when it is desired to obtain a thick coating more alum
is subsequently added.
The plates to be coated are first thoroughly cleaned and are then passed as in
the ordinary tinning or galvanizing processes through the bath of melted lead so
prepared.
Dated this 1st day of June 1892.
2
FRANCIS G. BATES.
W. R. RENSHAW.
COMPLETE SPECIFICATION.
Improvements in Coating Iron and other Metals with Lead, and in
the Alloying or Treating of Lead to Render it Suitable for this
Purpose.
We, FRANCIS GORDEN BATES, of 2027 North College Avenue, Philadelphia,
United States of America, Engineer, at present residing at Montague Mansion,
Great Russell Street in the County of Middlesex, and WILLIAM ROBERT
RENSHAW of Phoenix Foundry, Stoke-on-Trent in the County of Stafford,
Engineer and Iron Founder, 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 :-
The object of this invention is to obtain upon sheets of iron or other metal, a
leaden coating which is brighter, smoother, harder and more firmly adherent than
such coatings are when produced by the methods hitherto in use.
For this purpose
the lead is first melted in a suitable vessel, its surface being covered with powdered
D77

page_text: charcoal, a preferably powdered brick, and the following materials are added to it
in the order named-aluminium, sal-ammoniac, arsenic, borax or alum or other
flux and cryolite.
The proportions it is preferred to employ are:-
in the order named:-aluminium, sal-ammoniac, arsenic, borax or alum or other
flux and cryolite.
The proportions it is preferred to employ are :—
Lead
Aluminium
Sal-ammoniac
Arsenic
Borax -
or preferably
Alum or similar flux
Cryolite
-
-
-
-
100 lbs.
-
5 lbs.
->
2 oz.
oz.
-
oz.
-
1 lb.
-
1 lb.
In some cases especially when it is desired to obtain a thick coating more alum
is subsequently added.
The aluminium will be found to combine with the lead and to produce an alloy
which is more suitable for coating metal plates than is the pure or unalloyed lead.
The arsenic also combines more or less with the lead which is thereby hardened.
The other materials named operate as fluxes to keep the metal surfaces clean and in
a suitable state to ensure the molten metal "taking" upon the surfaces of the metal
plates which are passed through it.
The plates to be coated are first thoroughly cleaned and are then passed as in
the ordinary tinning or galvanizing processes through the bath of melted lead so
prepared.
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 :-
1. An alloy or mixture of lead obtained by adding to it aluminium, sal-ammoniac,
arsenic, flux and cryolite.
2. An alloy or mixture of lead substantially as described.
3. The use of powdered brick as a covering for the melted metal.
4. Coating iron and other metals with an alloy of lead and aluminium, substan-
tially as described.
Noted 48609h don of Wala 1202
Dated 16 0041
1202
W. R. RENSHAW,
F. G. BATES,
By Carpmael & Co.,
Agents for the Applicants.