IMPROVEMENTS IN THE MANUFACTURE OF TIN AND TERNE PLATES, AND IN APPARATUS EMPLOYED IN THE SAID MANUFACTURE
Year: 1881

page_text: PROVISIONAL SPECIFICATION left by Ernest Trubshaw and George
Leyshon at the Office of the Commissioners of Patents on the 19th May
1881.
ERNEST TRUBSHAW, of Llanelly, in the County of Carmarthen, Tin Plate
Manufacturer, and GEORGE LEYSHON, of Tipton, in the County of Stafford,
Tinman. "IMPROVEMENTS IN THE MANUFACTURE OF TIN AND TERNE PLATES,
AND IN APPARATUS EMPLOYED IN THE SAID MANUFACTURE."
The object of our Invention is to simplify and improve the manufacture of tin
and terne plates, and consists of the method hereinafter described of conducting the
said manufacture, and of the apparatus hereinafter described by which the said
manufacture is conveniently conducted.
In conducting the manufacture of tin and terne plates according to our Invention,
we dispense with the pot or vessel containing melted grease, and commonly called
the tinman's pan; we also dispense with the vessel containing melted tin or terne
metal, and commonly called the tinman's pot; we also dispense with the soaking
and dipping pot, commonly called the washman's pot.
In place of the several vessels described, and the ordinary treatment in the said
vessels of the plates to be coated, we employ a vessel of the kind hereinafter
described, and conduct the coating process by means of the said vessel in the manner
hereinafter described.
The pot or vessel we employ is divided into two or more compartments, and .we
either employ tin or terne metal in all the compartments, or we employ grease in
one of the compartments and metal in the others. In the compartment in which
the plates to be coated are first treated is a division extending from the top to such
a distance downwards that its lower edge is during the working always below the
surface of the melted metal. This compartment contains tin or terne metal, and on
the surface of the metal on the outer side of the division a layer of rosin and tallow
or other flux is put. On the surface of the metal, in the inner side of the division
referred to, is a layer of tallow or palm oil, and a cradle is fixed to raise the plates
out of the metal, the plates being then drawn through brushes fixed at a convenient
height above the metal. The other compartment contains either tin or terne
metal or grease, and also contains an arrangement of plain iron or steel rolls.
After the plate to be coated has been cleaned by the ordinary cleaning process,
commonly called pickling, it is immersed in the outer portion of the first compart-
ment
The said plate first passes through the grease or flux on the surface of the

page_text: melted metal into the melted metal, and is passed under the division into the other
portion of the first compartment. The coated plate is drawn from the melted metal
in the inner portion of the first compartment, and is passed into the second com-
partment containing metal or grease. The plate is directed so as to pass between
the rolls contained in this compartment, and on its removal from this compartment
requires only to be treated by the ordinary cleaning process.
By our Invention the manufacture of tin and terne plates is simplified, labour
economized, and the injury to the plates, which frequently results in the ordinary
method of manufacture from the long exposure of the plates to the action of the
melted metal, is avoided.