Improved Process of Recovering Tin from Tin Scraps.
Year: 1892

page_text: Date of Application, 16th June, 1892
Complete Specification Left, 5th Nov., 1892-Accepted, 17th Dec., 1892
PROVISIONAL SPECIFICATION.
Improved Process of Recovering Tin from Tin Scraps.
I, JOHN PITT BAYLY, of 18 Fulham Place, Paddington, W., in the County of
London, Patent Agent, do hereby declare the nature of this invention (a communi-
cation to me by John Jacques Naef, of No. 216, 11th Avenue, Paterson, County
of Passaic and State of New Jersey, U.S.A.) to be as follows:-
Heretofore tin was recovered from tinned iron or tinned scraps by means of
chlorine gas-pure or mixed with cold or heated air.
The object of my invention is to recover tin from tinned scraps by means of
electricity, which process simpler, cheaper and more reliable.
The invention consists in the new and improved process, whereby the tin from
the tinned scraps is removed and dissolved in a stannic salt solution and is
precipitated on lead plates by the action of an electric current-in pure chemical
state either in crystals or in powder.
To better illustrate my invention reference can be had to the accompanying
drawings, in which like letters of reference indicate corresponding parts in each of
the several figures:
Fig. 1 is a sectional view of an apparatus adapted for my process and
Fig. 2, is a detail view of a modified form of cathode in connection with said
apparatus.
In carrying out my process, 1 take a vat a and cover its inside with thin lead
plates b, preferably corrugated as shown in Fig. 2.
These lead plates are connected with the negative pole of a battery or dynamo
and form the cathode in my improved apparatus.
Across the vat a are arranged supporting bars or rods d from which are suspended
netted bags e, made out of twine, lead wire or any other material which will not be
affected by stannic salt.
In these bags the tinned iron or tinned scraps are placed and are connected
with the positive pole of said battery or dynamo-thus forming the anode for the
apparatus.
The vat a is filled with a concentrated solution of stannic chloride or of any
other suitable stannic salt-and the current of the battery or dynamo is then
started.
The tin of the tinned iron or scraps is dissolved by the stannic salt and an equal
amount of tin, (crystallic or powdered) is precipitated on the lead plates.
This process is continued until all the tin from said scraps is recovered, when new
scraps are placed in the bags.
I do not claim the use of iron plates inside of a vat, as such plates are very
easily affected by the stannic salt solution.
Dated this 16th day of June 1892.
J. P. BAILI,
Applicant.
COMPLETE SPECIFICATION.
Improved Process of Recovering Tin from Tin Scraps.
1, JOHN PITT BAYLY, of 18 Fulham Place, Paddington, W., in the County of
London, Patent Agent, do hereby declare the nature of this invention (a communi-
cation to me by John Jacques Naef, of No. 216, 11th Avenue, Paterson, County of
Passaic and State of New Jersey, U.S.A.,) and in what manner the same is to
[Doli

page_text: .
be performed, to be particularly described and ascertained in and by the following
statement :-
Heretofore tin was recovered from tinned iron or tinned scraps by means of
chlorine gas-pure or mixed with cold or heated air.
The object of my invention is to recover tin from tinned scraps by means of
electricity which process is simpler, cheaper and more reliable.
The invention consists in the new and improved process, whereby the tin from
the tinned scraps is removed and dissolved in a stannic salt solution and is
precipitated on lead plates by the action of an electric current-in pure chemical
state either in crystals or in powder.
To better illustrate my invention reference can be had to the drawings filed
with the Provisional, in which like letters of reference indicate corresponding parts
in each of the several figures:
Fig. 1 is a sectional view of an apparatus adapted for my process and,
Fig. 2, is a detail view of a modified form of cathode in connection with said
apparatus.
In carrying out my process, I take a vat a and cover its inside with thin lead
plates b, preferably corrugated as shown in Fig. 2.
These lead plates are connected with the negative pole of a battery or dynamo
and form the cathode in my improved apparatus.
Across the vat a are arranged supporting bars or rods d from which are suspended
netted bags e, made out of twine, lead wire or any other material which will not be
affected by stannic salt.
In these bags the tinned iron or tinned scraps are placed and are connected
with the positive pole of said battery or dynamo-thus forming the anode for the
apparatus.
The vat a is filled with a concentrated solution of stannic chloride or of any
other suitable stannic salt-and the current of the battery or dynamo is then
started.
The tin of the tinned iron or scraps is dissolved by the stannic salt and an equal
amount of tin, (crystallic or powdered) is precipitated on the lead plates.
This process is continued until all the tin from said scraps is recovered, when
new scraps are placed in the bags.
I do not claim the use of iron plates inside of a vat, as such plates are very
easily affected by the stannic salt solution.
1-The process of recovering tin from tin scraps which consists in suspending the
scraps in a stannic salt solution containing lead plates, and then passing an electric
current from the tinned scraps to the lead plates whereby the tin will be dissolved
from the scraps and precipitated on the lead plates.
2 The combination of the vat lined with lead plates, the netted bags suspended
in said vat, and connections for passing an electric current to the scraps in the bags
and from the lead plates, substantially as and for the purposes set forth.
Dated this 5th day of November 1892.
J. P. BAYLY,
Applicant.