Year: 1886

page_text: Date of Application, 1st Feb., 1886.
Complete Left, 1st Nov., 1886.
Complete Accepted, 1st Feb., 1887.
I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co. Patent Agents,
Southampton Buildings in the County of Middlesex do hereby declare the nature of
my invention to be as follows:-
--
This invention relates chiefly to the covering or coating of platinum, silver or the
like, with nickel.
The method of coating platinum or silver, or alloys of these metals with nickel is
effected in the following manner.
The metals to be plated or covered are preferably in the form of plates or wires, the
surfaces of which are as clean as possible. The surfaces to be covered are filed,
planed, shaped and cleansed in such a manner as to facilitate an excellent contact of
the nickel therewith at all points. The nickel must moreover be in such a condition
of malleability that the hammering or rolling which terminates the operation can
complete the intimate contact of the metals.
The surfaces to be united are powdered with any soldering flux such as borax, and
the two pieces are then subjected to a suitable temperature for soldering; they are
finally united by hammering or rolling.
In order that this soldering shall succeed, it is necessary to withdraw the surfaces
to be soldered from contact with the air which latter would oxidize the red hot nickel.
For this purpose the following process amongst others, can be employed, which process
consists in previously enclosing the metals to be united in thin metal sheaths or
envelopes. When, after suitable heating and hammering, the metals are soldered, the
metal sheath or envelope is removed by scouring or scaling or in
any
other manner.

page_text: With the object of avoiding the soldering of the envelope upon the metals to be
united, I propose to coat the envelope on its internal surface with a layer of magnesia,
lime, oxide of zinc or other substance having similar properties, in order to prevent
the internal contact of the envelope with the metals to be soldered.
When the soldering is once effected, the envelope can be easily removed from the
soldered pieces.
The plates and wires obtained in this manner are adapted for the manufacture of
receptacles and utensils which are of use in pharmacy, in chemical laboratories,
and in certain industries, by reason of their perfect resistance to the action of acids
and alkalies.
HASELTINE, LAKE & Co.,
For the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements relating to the Uniting of Platinum or Silver and
Nickel or Alloys of these Metals.
I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co., Patent Agents
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 the method of uniting platinum or silver and nickel or
alloys of these metals in the manufacture of compound plates wires or the like.
According to the said invention the surfaces to be united should be as clean as
possible and be filed, planed, or shaped, in such a manner as to facilitate an excellent
contact of the two surfaces at all points. The nickel must moreover be in such a
condition of malleability that the hammering or rolling which terminates the operation
can complete the intimate contact of the metals.
The surfaces to be united are powdered with any soldering flux such as borax, and .
the two pieces are then subjected to a suitable temperature to render them sufficiently
malleable for enabling the said pieces to be finally welded by hammering or rolling.
In some cases the contact surface of one of the pieces can be electro plated with
a metal which, when the said pieces are placed together and heated will constitute a
solder.
In order that the welding shall succeed it is necessary to prevent the air from
coming into contact with the said surfaces, which air would oxidate the red hot nickel.
For this purpose the following process can be employed, which process consists in
previously enclosing the metals to be united in thin sheath or envelope of sheet iron,
copper or other metal capable of withstanding the heat. When, after suitable heating
and hammering, the metals are united, the metal sheath or envelope is removed by
scouring or scaling or in any other manner. It is sufficient to fold the envelope
closely around the pieces to be united in order to render it air tight.
With the object of avoiding the union of the sheath or envelope with the metals to
be united, I coat the said sheath or envelope on its internal surface with a layer of
magnesia, lime, oxide of zinc, or other substance having similar properties, in order to
prevent the internal contact of the envelope with the metals to be united. When the
union of the pieces is once effected, the envelope can be easily removed.
If desired nickel wires can be coated with platinum in the manner hereinbefore
described. In this case the platinum covering is bent into the form of an open tube
which is closed around the nickel after the latter has been inserted therein.
Nickel plates and wires coated in the manner hereinbefore described with platinum,
or silver, or alloys of these metals, are adapted for the manufacture of receptacles and
utensils which are of use in pharmacy, in chemical laboratories and in certain
industries, by reason of their perfect resistance to the action of acids and alkalies.

page_text: Having now particularly described and ascertained the nature of the said invention,
and in what manner the same is to be performed, as communicated to me by my foreign
Correspondents, I declare that what I claim is :-
In the manufacture of compound plates, wires or the like composed of platinum
(or alloys of platinum and copper, platinum and nickel or platinum and iron), or silver
(or alloys of silver and copper or silver and nickel) and nickel (or alloys of nickel and
copper, or nickel and iron) united by welding or soldering, the employment of a metal
sheath or envelope for protecting the surfaces to be united from oxidation by the air,
the said sheath or envelope having an internal layer of magnesia, lime or other suitable
substance for preventing it from uniting with the metals being operated upon.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London,
Agents for the Applicant..