Year: 1885

page_text: I, JOHN SCUDAMORE SELLON of Hatton Garden in the County of Middlesex
Gentleman do hereby declare the nature of this Invention to be as follows:-
My Invention relates to a process and means for soldering the metal aluminium
either to itself or to other metals or alloys such for example as Gold, Silver,
Platinum Nickel, Cobalt, Copper, Tin, Lead, Iron, Zinc German Silver, Brass or
Bronze. For this purpose I provide an alloy of zinc preferably consisting of zinc
tin and lead which I apply to the Aluminium at the part or parts where soldering is
to be effected and I also employ as an intermediary a material which will prevent
oxidation of the Aluminium.
If necessary I first clean (by scraping or otherwise) the surface of the Aluminium
at the part or parts where soldering is to be effected and I then apply to the said
part or parts paraffin wax or other suitable matter which will liquefy or flow at a
low temperature. I then apply the before mentioned alloy to the part or parts
where soldering is to be effected and I then apply heat. Before the heating has
reached a degree sufficient to injure or cause oxidization of the Aluminium the
paraffin wax or its equivalent will be melted and will exclude air whilst and until
the alloy becomes melted and attaches itself to the Aluminium. Where Aluminium
is to be joined to Aluminium both surfaces to be attached will be thus treated but
where Aluminium is to be joined to other metal or alloy which can ordinarily be
united by soldering the Aluminium only need be prepared in this way. The pieces
of metal with the aluminium so prepared can be attached by any ordinary or
suitable solder. It will be understood that if desired the alloy may be coated
with the paraffin wax or its equivalent in substitution for or in addition to the
coating of the Aluminium surface.
Dated this sou 1

page_text: Process and Means for Soldering Aluminium.
I JOHN SCUDAMORE SELLON of the Firm of Johnson Matthey and Company of
Hatton Garden in the County of Middlesex Assayers 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:-
My Invention relates to a process and means for soldering the metal Aluminium
either to itself or to other metals or alloys such for example as Gold Silver
Platinum Nickel Cobalt Copper Tin Lead Iron Zinc German Silver Brass or
Bronze For this purpose I provide an alloy preferably consisting of Zinc tin and
lead which I apply to the Aluminium at the part or parts where soldering is to be
effected and I also employ as an intermediary a material which will prevent
oxidation of the aluminium. If necessary I first clean by scraping or otherwise
the surface of the Aluminium at the part or parts where soldering is to be
effected and I then apply to the said part or parts paraffin wax or other suitable
matter which will liquify or flow at a low temperature. I then apply the prepared
alloy to the part or parts where soldering is to be effected and I then apply heat.
Before the heating has reached a degree sufficient to injure or oxidize Aluminium
the paraffin wax or other equivalent will be melted and will exclude air whilst
and until the alloy becomes melted and attaches itself to the Aluminium. Where
aluminium is to be joined to Aluminium both surfaces to be attached will be thus
treated but where Aluminium is to be joined to other metal or alloy which can
ordinarily be united by soldering the Aluminium only need be prepared in this
way the pieces of metal with the Aluminium so prepared can be attached by any
ordinary or suitable solder. It will be understood that if desired the alloy may be
coated with the paraffin wax or its equivalent in substitution for or in addition to
the coating of the Aluminium surface.
·
Whilst not limiting myself to the following procedure I will give the best means
with which I am acquainted for carrying my Invention into effect as applied to
soldering two pieces of Aluminium together. I prepare an alloy of 5 parts zinc
2 parts tin and 1 part lead and this I roll into thin sheets, I then scrape the parts
of the Aluminium to be attached and I coat them with paraffin wax. I then place
on each of the surfaces a piece of the alloy and I apply heat. The wax first melts
and then when a higher heat is obtained the alloy melts and on cooling will be
found to be firmly attached to the Aluminium surfaces which can then be soldered
together as ordinary soldering is effected. Where Aluminium is to be soldered
to other metals which do not require the foregoing preparation such preparation
is of course only effected with respect to the Aluminium surface.
.*
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what
I claim is
First: The process of soldering Aluminium consisting in the employment
of a zinc alloy with the intervention of a substance which will melt at a lower

page_text: temperature and prevent oxidation or injury of the Aluminium substantially as
hereinbefore described.
Second: An alloy or compound for soldering Aluminium consisting of Zinc tin
and lead in substantially the proportions set forth.
Third: In soldering Aluminium the use of paraffin wax or the equivalent
thereof as herein before defined for preventing injury or oxidation of the aluminium
substantially as herein before described.