IMPROVEMENTS IN THE MODE OF AND APPARATUS OR MACHINERY FOR COATING METAL PLATES WITH TIN, LEAD, AND OTHER METALS OR ALLOYS OF SAME
Year: 1882

page_text: LETTERS PATENT to Henry Francis Taylor of the firm of Taylor, Struvé,
Eaton and Price of Neath and Briton Ferry both in the County of
Glamorgan, Mechanical Engineers, and George Leyshon of Tividale in the
County of Stafford, Tin House Superintendent for an invention of "IMPROVE-
SERTAT
PROVISIONAL SPECIFICATION left by the said Henry Francis Taylor and
George Leyshon at the Office of the Commissioners of Patents on the
4th May 1882.
HENRY FRANCIS TAYLOR of the firm of Taylor[,] Struvé[,] Eaton and Price of
Neath and Briton Ferry both in the County of Glamorgan[,] Mechanical Engineers[,]
and GEORGE LEYSHON of Tividale in the County of Stafford[,] Tin House Superin-
tendent "IMPROVEMENTS IN THE MODE OF AND APPARATUS OR MACHINERY FOR
COATING METAL PLATES WITH TIN, LEAD, AND OTHER METALS OR ALLOYS OF SAME."
The chief object of our Invention is to perform in one pot containing the metal
for coating the plates the same operation for which it has been heretofore necessary
to use several pots-generally four or five pots-although we are aware that
attempts have been made to accomplish in what might be called one pot what we
propose to do, but these attempts have been made with very complicated machinery,
and at the same time we produce better results than heretofore where several pots
or combination of pots have been used and very materially reduce the cost of
production both in material and labour.
According to our Invention we place rollers or guides near the top of the pot
containing the coating material between which the plates to be coated are to be
passed, when these guides consist of rollers they are mounted in bearings and are
driven by gearing in opposite or reverse directions to one another; the guides are
immersed in the coating material contained in the pot. Above the rollers two
hoppers or boxes are provided or one divided hopper or box; the first hopper or box
contains the flux consisting of tallow and palm oil or other material suitable for

page_text: fluxing, the second hopper or box contains the material used for preventing the
surface of the metal from oxidizing such as powdered charcoal and lime.
The plates having been prepared in the usual manner by pickling are introduced
one after the other into the first hopper containing the flux at the bottom of this
hopper, the plate is nipped by and is carried down as the rollers revolve; below the
rollers the plate is caught by one end of a weighted lever and it is canted or
pushed over to the underside of the nip of the adjacent rollers whereby the plate
is carried up between same and through the second hopper containing the charcoal
lime or other equivalent material whereby the metal is prevented from oxidizing
and the thickness of the coating on the plates is regulated, the surface thereof is
also reduced and consequently improved. When the plate reaches the top of the
rollers it is removed from the machine. By the above mode of proceeding the
plates pass down between the rollers in and through the coating material and when
coated up and between the pressing roller and into the second hopper all
substantially as for the purposes hereinbefore described.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Henry Francis Taylor and George Leyshon in the Great Seal
Patent Office on the 4th November 1882.
HENRY FRANCIS TAYLOR of the firm of Taylor Struve Eaton and Price of Neath
and Briton Ferry both in the County of Glamorgan Mechanical Engineers and
GEORGE LEYSHON of Tividale in the County of Stafford Tin House Superintendent
"IMPROVEMENTS IN THE MODE OF AND APPARATUS OR MACHINERY FOR COATING
METAL PLATES WITH TIN LEAD AND OTHER METALS OR ALLOYS OF SAME."
The chief object of our invention is to perform in one pot the same operations
for which it has heretofore generally been necessary to use several pots, generally
four or five pots, the said one pot being adapted to contain the required minimum
amount of coating metal and being formed or fitted with the coutainers for the
required materials used for fluxing the uncoated plates and for finishing the coated
plates, although we are aware that attempts have been made to accomplish in what
might he called one pot what we propose to do; yet these attempts have been
made with very complicated machinery.
Now by the use of our invention we produce superior results in the manufacture
of Tin and terne plates in one pot and so to say by one operation and very
materially reduce the cost of production both as to material and labour also in fuel,
in space occupied and in coating and fluxing material employed.
And in order that this our Invention may be more fully understood we will
proceed to describe an apparatus constructed according to the same and as an
illustration of the manner in which the invention may be carried into effect.
Figure 1 is an end view of the apparatus Figure 2 a vertical section through
same Figure 3 a vertical transverse section and figure 4 a plan Figure 5 is a
detail front view and Figure 6 is a plan of the clipping device and Figure 7 shews
the clipping device in perspective. Similar letters refer to like parts in all the
Figures.
According to our Invention we place rollers or guides near the top of the pot
containing the coating material between which the plates to be coated are to be
passed when these guides consist of rollers, they are mounted in bearings and are
driven by gearing in opposite or reverse directions to one another, A is the pot
containing the coating material; B is the entrance box or hopper for containing
the fluxing material and C the exit or finishing grease box or hopper. We would
here remark that we in carrying our Invention into practical effect have found
fixed guides much superior to the said revolved guide rollers as the latter appear
to counteract to a certain extent the preparatory action of the flux on the entering
uncoated plates and have other disadvantages; D. D. are the guides which are or
inay be immersed in the coating material contained in the pot A and may advan-
tageously and as here shown be carried up to the top of the entrance flux box or
hopper B, or instead of thus continuing them up we may employ rollers at the
upper part of the said flux box B for the purpose of guiding and assisting the plate
down through the aforesaid lower fixed guides D and into the molten metal. Two
hoppers B and C are provided in the case here shown or one divided hopper may
be used; the first hopper viz the entrance flux box B contains the flux consisting
of tallow and palm oil or other material suitable for fluxing or preparing the plate
to take the coating of metal or alloy; the second hopper or finishing grease box C
contains the material used for preventing the surface of the metal from oxydising
and for finishing the plate, this material may be tallow as is now usually employed
for such purpose.

page_text: The uncoated plates having been prepared in the usual manner by pickling are
introduced one after the other into the first hopper B containing the preparatory
flux; at the bottom of the hopper the plate is passed through or along the aforesaid
fixed guides D or rather along that part of the guides which is immersed in the
molten metal, as stated already this may, though not so shown here, be assisted
by guide rollers provided in the upper part of the hopper B, the plate is then
nipped by a gripping appliance or tongs H. J. K. below the fixed guides D the
plate is then caught by one end of a weighted lever and it is canted or pushed
over to the underside of the nip of the rollers E, whereby the plate is carried up
between same and through the second hopper C containing the tallow or finishing
grease or other equivalent material whereby the metal is prevented from oxydising
and the thickness of the coating on the plates is regulated; the surface thereof is
also reduced and consequently improved. When the plate reaches the top of the
rollers E it is removed from the machine by the attendant.
We will now more particularly describe the construction of the gripping tongs
H. J. K. and other interior parts of the apparatus; H and J are two rods having
their upper ends formed as handles and j for the workman to grasp in his hand,
the rod H is jointed to the hook or nipping finger K. by the pin K¹. and the rod J is
jointed to the same nipping finger K by the pin K. the bottom end of the rod H
is forked as also shown in the detail view Figures 5 6 and 7 the rod H has also
two arms or lugs H. with eyes or holes through which pass the guide rods G. G.
on the spindle G'. the lugs H'. are also provided with guards or horns H2; on the
spindle G. is fixed a lever F which at its upper end is weighted at F2. and has a
handle F, L is a guide in the lower part of the finishing grease box C; E'. E'.
are upper finishing or exit rollers. We do not confine ourselves to the position
of the levers or nippers.
The operation is as follows:-
The workman takes hold of the rod or lever H by the handle h and raises it
together with the parts J and K against a stop so far that the hook K does not
quite reach the surface of the molten metal, he then places the plate to be coated
into the hopper B and into the nip of the gripping tongs H. J. K. and having
brought the handles h j together in his hand he thereby causes the bottom part of
the plate to be nipped between the hook or finger K and the rod H: he then
pushes down the whole appliance with the plate along the guide rods or cradle G
until the plate (all according to its depth) is below the bottom edge of the hoppers
B. C. The boy or other attendant then cants over the rods or cradle G by means
of the handle F' of the weighted lever F against suitable stops so that the plate
(boy still holding the handle F¹.) comes about vertical or fair with the guide L.
The boy continues to hold the handle F. until the man has released the grip of the
tongs on the plate and has raised the tongs H. J. K. together with the plate so far
that the plate is brought into the nip of the revolving rollers E. E. where upon the
boy lets go the handle of the lever F which by the weight F2 then falls back into
its original position together with the cradle G which latter is then in a position
ready to receive a fresh plate. The rollers E. E. carry the plate up and between
the exit rollers E¹. E. and out.
The weight of the gripping tongues H. J. K. may especially for tinning be
balanced by a balance weight and chain connected to a lever and rod such for
instance as by the arrangement shown in dotted lines in Figure 2.
The horns H. hold the plate in position until it is nipped with the finger K.
The canting movement of the rods G. G. may if desired be effected automatically
by suitable lever connections to the tongs H. J. K. so that by the movement of the
latter they the rods are canted and brought back. As the parts G. H. and K
which are the only parts that come in contact with the plate never enter the
uppermost layer or surface of the molten metal and also as the parts of the rods H
and J which do work through the surface of the molten metal are placed outside
the entrance hopper B, any scruff or other impurities that may be on the surface
of the molten metal cannot be carried down and made to adhere to the plate. We

page_text: do not confine ourselves to the position of the nipping appliance shown in the
drawing.
The above mode of proceeding then consists in passing the plates down through
the preparatory grease box between guides, in and through the coating material,
and when coated, up and between the pressing rollers and through the finishing
grease contained in the second hopper and out from the same in a finished coated
condition, and all in one pot and so to say by one operation, and with only a small
quantity of coating metal in the pot and by the employment of a nipping appliance
which never comes to the surface of the coating metal and whereby the plate is
brought into the nip of the pressing rollers in the exit or finishing grease box.
Having now described the nature of our said Invention and in what manner the
same is to be performed we declare that we are aware that it has heretofore been
proposed to prepare and to coat inetal plates in one operation and in a vertical pot
and sometimes with rollers on the exit side in the coating metal and in the flux
the plate having then to be finished in another apparatus videlicet: a finishing
grease pot we are also aware that it has been proposed to prepare and coat and
finish metal plates in one operation and in a pot in which the plate is made to
travel in a more or less curvilinear direction from one end of the pot to the other
by rollers chains or other means but we claim.
First-Preparing, coating and finishing metal plates all in one operation in and
by the employment of a vertical coating pot provided with an entrance flux box
with guides and an exit finishing grease box containing pressing finishing rollers
the plate being conveyed into a suitable nipping appliance and cradle which is
always kept under the surface of the coating metal and which nipping appliance is
depressed; the plate being then canted and then raised and delivered into the nip
of the rollers in the finishing grease box, all substantially as set forth.
Second-The nipping appliance and cradle constructed and arranged in com-
bination with the weighted canting lever, substantially as described with reference
to the accompanying drawings.
Third-The coating pot A in combination with the entrance flux box B the
guides D the exit flux box C the guides L and the pressing or finishing rollers E
substantially as and for the purposes described with reference to the accompanying
drawings.
In witness whereof I the said Henry Francis Taylor for myself and on behalf
of the said George Leyshon have hereunto set my hand and seal this First
day of November in the year of our Lord One thousand eight hundred and
cightytwo.