Year: 1890

page_text: therewith.
Heretofore great difficulty has boen experienced in soldering upon aluminum, but
Mr. Land has discovered that pure tin will unite with aluminum at a temperature
above the melting point of tin provided the heated metal is burnished over the
surface of the aluminum.
The operation of burnishing or rubbing the surface of the aluminum is accomplishe
while the aluminum is immersed in melted tin. This secures a thin film of tin upon
the surface of the aluminum, thus establishing upon said surface a base or foundation
suitable to readily receive various forms of solder well known in the tinker's art.
Mr. Land also finds that any desired quantity of pure tin may be used in connection
therewith as a solder, or be united thereto in any thickness as a plating.
So also other metals, as copper, brass, galvanized iron, etcetera, formed into plate
may have a coat of tin adhering to their surface, and, by pressing the tinned surface
of the aluminum plate and the tinned surface of the brass, copper, or other tin
coated plate together under the application of heat, they may be caused to thoroughly
unite. By raising the temperature sufficiently, the metal plates may be thus readily
sweared together in a firm and substantial manner.
In this manner it is my correspondent's design to produce, as an article of
manufacture, a compound plate of aluminum having pure tin thus united thereto.
As shown in the drawings, A represents a plate of aluminum, provided, as above
described, with a tinned surface at A¹.
C is an additional metallic plate sweated thereupon as hereinafter described.
The aluminum plate being provided with a coat of tin on its face wakes it possib'e
to use either pure tin or various low grade solders as an attaching means to secure
aluminum facings to other metals, or the union may be formed by use of amalgam.
This it will be seen is a matter of much utility and importance, possessing many
advantages in many ways.
Thus, for example, in ornamental work of numerous kinds, it becomes possible to
readily unite aluminum facings to various other surfaces.
In the manufacture, also, of aluminum air cylinders, the alaminnin plits may be
first wound into a cylinder of as many thicknesses as may be desired and sweite I
together. A tin coated aluminum wire may then be wound, likewise, about the
cylinder and sweated therap, thus pro lacing remarkably light air cylinders that
will sustain a very great pr-sar, serviceable in carrying condensed air.

page_text: The invention contemplates tinning aluminum in any form in the manner herein-
before described.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, as communicated to me
by my foreign correspondent, I declare that what I claim is :-
1. A compound metallic plate or otherwise shaped metallic body, consisting of
aluminum provided with a tinned surface, substantially as set forth.
2. The process herein set forth of manufacturing a compound aluminum plate or
other aluminum body provided with a tinned surface consisting of burnished tin
upon a surface of the aluminum at a desired temperature, substantially as set forth.
3. The process of attaching aluminum facings to various surfaces, consisting of
tinning a face of the aluminum in the manner described, and attaching the same to
said surface as herein set forth.
Dated this 20th day of November 180N
WM. P. THOMPSON & Co.,
Agents for the Applicant.