or Allys with Lead.
Year: 1884

page_text: Copper or Copper Alloys with Lead.
I, ISAAC SHIMWELL MCDOUGALL of Irk Vale, Chadderton near Manchester in
the County of Lancaster Manufacturing Chemist do hereby declare the nature of
said Invention for IMPROVEMENTS IN COATING BOILERS AND OTHER VESSELS
MADE OF COPPER OR COPPER ALLOYS WITH LEAD" to be as follows:-
"
-
The object of my Invention is to protect Boilers or other vessels made of Copper
or alloys of Copper from the injurious action of liquids, solids or gases which are
of a nature likely to injuriously affect such boilers or vessels. This protection I
effect according to my Invention by coating the said boilers or vessels with lead
the said coating extending over the entire surfaces or over any portion thereof as
may be desired. I first clean the surface or portion of the surface of the copper or
alloy of Copper to be coated and I then apply over the surface or portion of the
surface chloride of zinc or its equivalent (in this application) and afterwards by
means of heat applied in a suitable manner I attach to the surface or portion of
the surface a coating of lead of any thickness desired.
•
J. HENRY JOHNSON,
47, Lincoln's Inn Fields, London, W.C.,
Agent for the said Isaac Shimwell M°Dougall,

page_text: Copper or Copper Alloys with Lead.
I ISAAC SHIMWELL M°DOUGALL of Irk Vale Chadderton near Manchester in
the County of Lancaster Manufacturing Chemist do hereby declare the nature of
my invention for "IMPROVEMENTS IN COATING BOILERS AND OTHER VESSELS MADE
OF COPPER OR COPPER ALLOYS WITH LEAD" and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following i
statement:-
The object of my Invention is to protect boilers or other vessels made of Copper
or Alloys of Copper from the injurious action of liquids solids or gases which are
of a nature likely to injuriously affect such boilers or vessels. This protection I
effect according to my Invention by coating the said boilers or vessels with lead
the said coating extending over the entire surfaces or over any portion thereof as
may be desired. I first clean the surface or any portion of the surface of the
Copper or alloy of Copper to be coated and I then apply over the surface or
portion of the surface chloride of zinc or its equivalent (in this application) and
afterwards by means of heat applied in a suitable manner I attach to the surface
or portion of the surface a coating of lead of any thickness desired. This
attachment of the lead may be effected by immersing the vessel (after the chloride
of zinc or its equivalent has been applied as aforesaid) in molten lead or the
molten lead may be run over the outer surface or the inner surface or over both
surfaces or any desired part or parts thereof or the lead may be melted upon and
distributed over the said surfaces or any desired part or parts thereof by means of
a blow pipe. I wish it to be understood however that I do not limit myself to
any particular method of applying the coatings or coverings of chloride of zinc or
its equivalent and of lead.
Having now described and particularly ascertained the nature of my said:
Invention and in what manner the same is to be performed I declare that
what I claim is
Coating or covering boilers or other vessels made of Copper or alloys of Copper
or part or parts of such boilers or vessels with lead by the intervention of
chloride of zinc (or its equivalent in this application) substantially as hereinbefore
described.