An Improvement in Apparatus or Machinery for Coating Metal Sheets with Tin, Lead, or other Coating Metal or Alloy of Metals.
Year: 1895

page_text: Date of Application, 11th Nov., 1895
Complete Specification Left, 13th May, 1896-Accepted, 13th June, 1996
PROVISIONAL SPECIFICATION.
An Improvement in Apparatus or Machinery for Coating Metal
Sheets with Tin, Lead, or other Coating Metal or Alloy of
Metals.
ROWLAND MACLARAN Managing Director of the Dafen Tin Plate Company,
DAVID HUGHES Mechanical Engineer, WILLIAM DAVIES Pattern Maker all of
the Dafen Tin Plate Works in the County of Carmarthen do hereby declare the
nature of this invention to be as follows:-
An improvement in apparatus or machinery for coating metal sheets with tin
lead or other coating metal, or alloy of metals.
The object of our improvement is to produce a better quality of coated plate
with a diminution in the consumption of the coating metal, fuel oil or grease
which we accomplish by the arrangement of the rollers inside the grease pot
whereas hitherto, in the machines of the type we now claim to improve, the nipping
or feeding rollers have with their driving gear revolved in the coating metal, we
completely lift them and the gear above the surface of the coating metal and they
revolve entirely in the palm oil or grease and in that way make the feeding rollers
more accessible for renewal and repairs, improve the quality of the plate, diminish
the size of the tin bath thus decreasing the surface of the metal exposed to
oxidation. When the feeding rollers revolve in the coating metal they impress
upon the metal sheet any impurity or scurf or scruff the metal may contain, by
our arrangement the rollers are quite free from contact with the coating metal
bath, and in that way do not impress upon the plate impurities the coating metal
contains, thus diminishing the number of "waster" sheets and improving the coated
plate.
Dated this 28th day of October 1895
ROWLAND MACLARAN,
Dafen Tin Plate Works, Llanelly.
DAVID HUGHES,
Velin Voel, Llanelly.
WILLIAM DAVIES,
40 Prospect Place, Llanelly.
COMPLETE SPECIFICATION.
An Improvement in Apparatus or Machinery for Coating Metal
Sheets with Tin, Lead, or other Coating Metal or Alloy of
Metals.
"
We, ROWLAND MACLARAN, Managing Director of the Dafen Tin Plate
Company, DAVID HUGHES, Mechanical Engineer, WILLIAM DAVIES, Pattern
Maker, all of the Dafen Tin Plate Works, in the County of Carmarthen, do
hereby declare the nature of this invention and in what manner the same is to be
Price 8)

page_text: performed, to be particularly described and ascertained in and by the following
statement :-
Our invention relates to that part of the process of coating metal sheets or
plates, in which the plates are immersed in what is commonly known as the tin pot,
in which hitherto the nipping or feeding rolls have, with their driving gear,
revolved in the coating metal. This arrangement causes a churning action to be
set up, and an amount of commotion in the metal which is thereby oxidized; also,
when the rolls revolve in the metal, any impurities contained therein are impressed
upon the coated plates; and the objects of our invention are to remedy these
defects and produce a better quality of coated plates, with a diminution in the
consumption of heating fuel and coating metal. By our invention we diminish the
size of the pot and reduce the area of metal exposed to the oxidizing influence of
the atmosphere, and secure a separate chamber for the palm oil.
And in order that our said invention may be particularly described and ascertained,
reference is hereby made to the accompanying drawings, in which similar letters
of reference indicate corresponding parts.
Fig. 1 is a sectional elevation, Fig. 2 is a sectional elevation at right angles to
Fig. 1, and Fig. 3 is a plan view.
T is the frame in which the rolls R R are mounted. In Fig. 1 six rolls are
shown, but any other suitable number may be used. P is the grease pot.
G is
the tin or metal pot. S is the guide grid; F is the flux box; D is the driving
shaft; and N the driving gear. The dotted line a a indicates the surface of the
coating metal in the tin pot.
In working our improved pot the plates are prepared by pickling in the usual
manner, and are introduced by an attendant, one after the other, into the flux box F
(Fig. 1). The plates pass along the guide grid S. S. into the grease pot P, where
they are caught by the nipping rolls R. R. and pass upwards between the pairs of
rolls, and are removed from the upper pair of rolls by an attendant.
By our invention the machinery is raised and rendered more accessible than
hitherto, and by enclosing it in the grease pot we diminish the number of wasters.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. The improved apparatus or machinery for coating metal sheets with tin, lead,
or other coating metal or alloy of metals, substantially as and for the purposes
described and illustrated by the drawings.
2. In apparatus for coating metal sheets as aforesaid, the improved construction,
relative position, and arrangement, whereby the grease is separated from the
metal, and whereby the surface of the coating metal exposed to the action of the
atmosphere is reduced, substantially as herein before described and illustrated by
the drawings.
3. In apparatus for the purposes aforesaid, the improved arrangement whereby
the rolls and driving gear are mounted in the grease pot, substantially as and for
the purpose described and illustrated by the drawings.
Dated this Thirteenth day of May 1896.
WM. JORDAN,
120 Chancery Lane, London, W.C., Agent for the Applicants.