Improvements in Mechanical Soldering of Tin Boxes, Cans, and other Tin Receptacles, and in Machines therefor.
Year: 1894

page_text: Date of Application, 23rd Feb., 1894
Complete Specification Left th Nov 1804 Accented 20th Dan
4001
Communicated from abroad by OTTO ASCHE, of 7, Rue Cail, Paris, France,
Engineer.]
Improvements in Mechanical Soldering of Tin Boxes, Cans, and
other Tin Receptacles, and in Machines therefor.
I, ERNEST DE PASS, of 78, Fleet Street, in the City of London, Fellow of the
Chartered Institute of Patent Agents, do hereby declare the nature of this
invention to be as follows:-
This invention relates to improvements in mechanical soldering of tin boxes,
cans, and other tin receptacles, and in machines therefor, whereby the soldering
operations can be effected, without manual labour, after the lid or cover has been
placed upon the body of the article, the edges of which have been previously
tinned or supplied with solder. These operations consist in heating the lid or
cover, and the box, in subjecting them to pressure for the purpose of forming a
tight union, and in cooling, still under pressure, the said box and its lid or cover,
the box during these different phases of manufacture being compelled to travel
the entire length of the machine.
or
The box, the edge of which has received a previous tinning, or application of
solder, as described in the Specification of Letters Patent No. 3294" is taken to
the improved machine, which comprises :-A cold table whereon the said box is
first placed; a hot plate or table, heated by gas blow pipes, or by any other
suitable means of heating; a second cold table on which the soldered box, after
its passage upon the hot plate or table, is cooled for the time necessary for the
solidification of the solder, and which table may be provided with a reservoir of
running water, or with other suitable cooling arrangements; and means
mechanism, driven by hand, or by power, for conveying the articles to be soldered
from the first cold table to the hot plate or table, and thence on to the second cold
table. The conveying mechanism may consist of endless chains having their
driving and guiding wheels arranged at the extremities of the two cold tables, and
running in the direction of the length of the soldering tables. These chains carry
a series of clip pieces or nippers, arranged at suitable distances apart, and con-
necting the two chains by two pivots opposite each other, and each of which is
furnished with a thin blade sliding upon the soldering table and made of a metal
which will not take solder, for instance aluminium.
The boxes with their lids or covers to be soldered, are placed on that blade
which, for the moment, is on the first cold table, and a suitably sized weight is
laid upon the two parts to be connected by soldering. The chains then convey
the boxes on to the hot plate, and the metal blade wbich supports said box
prevents any friction of it with the table and is readily traversed by the heat,
which re-melts the solder, or the tinning, with which the edges of the box and its
lid or cover have been previously provided. The solder being melted the weight
now acts to closely unite the parts to be soldered, and the endless chains, con-
tinuing to advance, bring the soldered box onto the second cold plate where the
solder becomes solidified, whilst the other boxes are on their way to undergo the
same operation.

page_text: Any suitable arrangement may be adapted to the machine to bring the weight
within reach of the operative working the machine.
11
30 1
1311001
Improvements in Mechanical Soldering of Tin Boxes, Cans, and
other Tin Receptacles, and in Machines therefor.
I, ERNEST DE PASS, of 78, Fleet Street, in the City of London, Fellow of the
Chartered Institute of Patent Agents, 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, reference being had
to the accompanying drawings and to the letters and figures marked thereon, that
is to say :-
This invention relates to improvements in mechanical soldering of tin boxes,
cans, and other tin receptacles, and in machines therefor, whereby the soldering
operations can be effected without manual labour, after the lid or cover has been
placed upon the body of the article, the edges of which have been previously
tinned or supplied with solder. These operatious consist in heating the lid or
cover and the box, in subjecting them to pressure for the purpose of forming a
tight joint, and in cooling, still under pressure, the said box and its lid or cover,
the box during these different phases of manufacture being compelled to travel
the entire length of the machine which, for this reason is termed "travelling
solderer."
In carrying out the invention, the preliminary tinning of the edges of the
bodies of the boxes, such as described in the Specification of the Patent No. 3294",
is, by preference, adopted.
"
The edge to receive the cover having been thus prepared, the soldering
operation is effected by means of the machine shown, by way of example, in the
annexed drawings, in which:
Fig. 1 is a longitudinal elevation,
Fig. 2 is a plan, and
Fig. 3 is a transverse section taken on the line, x, Fig. 1.
Figs. 4, 5, and 6 show various kinds of joints which can be soldered by the said
machine, and which machine also enables all kinds of metal articles to be soldered
by simple pressure.
Fig. 7 is a longitudinal section shewing certain parts of the machine to a larger
scale.
It consists of four distinct parts, viz. :-
A cold table or plate A, upon which the boxes to be soldered are placed; a hot
table or plate B, heated by gas blow pipes C, or by any other suitable means; a
cold table or plate D, upon which the soldered box after its passage along the hot
table is cooled for a sufficient length of time to solidify the solder, and which table
is furnished with a reservoir of running water, or with any other means for cooling;
and mechanism for conveying the boxes to be soldered from the first cold table A
onto the hot table B, and thence on to the cooling table D.
All these parts are combined on the same framework.
The three first parts of the apparatus do not present any peculiarity. Their
construction will be readily understood on reference to Figs. 1, 2, and 3.
The feeding mechanism is constructed and works in the following manner :-
E, E, are two endless chains, running in the direction of the length of the
soldering tables, and having their driving and guiding wheels arranged at the ends
of the two cold tables. These chains may be driven by hand, by means of the

page_text: gear wheels and crank handle shown to the right of Figs. 1 and 2, or if, preferred,
they may be set in motion by any suitable motor. They carry a series of nippers
or clips F, F, shewn more clearly in Fig. 7, arranged at suitable distances apart,
and pivotted thereto at points situated opposite each other. The said nippers or
clips carry thin blades Ĝ, of a metal incapable of taking solder (aluminium, for
instance), which slide upon the tables and carry the articles to be soldered.
The working of the machine is as follows:-
The box or receptacle, with its cover or lid to be soldered, is placed upon that
one of the blades G which, for the moment, is on the first cold table. A suitable
weight is then laid upon the two parts to be connected by soldering. The
chains E, E, convey the box on to the hot table B, and the metal blades which
support it prevent any friction between it and the table, and are readily traversed
by the heat which remelts the tinning on the edges of the box and its cover, or
lid. On the melting of the solder, the weight serves to closely unite the parts to
be soldered, and the endless chains E, continuing to advance, bring the soldered
box on to the cold table D where the solder becomes solidified, other boxes being,
at this time, on their way to undergo the same operation.
An overhead or other suitable arrangement may be employed to bring the
weight within reach of the operative serving the machine, and the action or pressure
of the weights may be replaced by any other pressure.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The herein described process of soldering tin boxes, cans, and other tin
receptacles, consisting in tinning the edges of the receptacle and its cover, by any
suitable process, then passing them from a cold table on to a hot table where the
melting of the solder takes place, and thence onto another cold table where the
cooling is effected, substantially as set forth.
2. For carrying out the above claimed process, a soldering machine consisting
of a cold table, a hot table, a cooling table, aud means for conveying the boxes
along the tables, said means consisting of two parallel endless chains actuated by
manual or other power, and connected together at certain distances apart by
nippers or clips which carry thin blades of non-solderable metal for supporting
the weighted boxes to be soldered, substantially as herein described and for the
purposes indicated.
3. The soldering machine herein before described and shewn with reference to
the accompanying drawings.
Dated this 6th day of November 1894.