Improvements in Apparatus for Coating Metal Plates with Tin or other Metal.
Year: 1887

page_text: Date of Application, 16th May, 1887
Complete Left, 15th Feb., 1888
Complete Accepted, 16th Mar., 1888
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Coating Metal Plates with Tin or
other Metal.
We, DANIEL EDWARDS, Tin Plate Manufacturer RICHARD LEWIS, Foreman, and
PHILIP JONES Mechanic, all of the Dyffryn Iron and Tin Plate Works, Morriston,
Swansea, do hereby declare the nature of this invention to be as follows:-
"
:-
In the Specification of a former Patent granted to us No. 5702 in the year 1885 we
described means whereby with a tinning" pot or bath of suitable dimensions we
were able to allow each plate which was to be coated to dwell for a time in the melted
coating metal and yet to carry on the coating continuously and uniformly.
We also described using with such apparatus a "dipping" pot containing finishing
coating metal-the plates being introduced into such "dipping" pot by hand after
coming from the "tinning" pot.
Our present improvements have for their object to improve apparatus of this kind
to admit of the plates being passed without handling from the first "tinning" pot to
and through the pot containing the finishing metal so as to save hand manipulation of
the plates from the time when they enter the first pot or bath of molten metal until
they emerge in a finished state from the grease or flux or material contained in the
hopper at the exit end of the apparatus whereby the oxidation of the coated plate is
reduced and a great saving in labour is effected.
In addition to this as the plates have to pass between a greater number of pairs of
rollers they will be extra rolled so that the finish given to them will be much
improved.
For this purpose in place of the pairs of rolls which are in the grease or flux hopper
at the delivery end of the "tinning" pot or bath described in the Specification above
mentioned being set vertically one over the other as is described in that Specification
we so place them as to deliver the plates in an inclined direction as nearly
horizontal as may be so as to cause the plates to pass over the top edge of the back of
he hopper and we place over and at a short distance above this edge an arched guard
r guides which again deflect the plate downwards after it has passed from the hopper
nd deliver it to a pair or pairs of rollers in a second tinning or coating pot in which

page_text: the metal is kept at a lower temperature than in the first pot and by these rolls the
plate is conveyed onwards through this second part and delivered by other rolls through
grease or flux or other suitable material contained in a hopper which is at the top of
the exit end of this second pot. This grease or flux hopper we surround with a flue
through which either hot or cold air may be passed according as it is required to heat
or cool the grease or flux or material.
In place of the plate as it passes from the first tinning pot being introduced into a
second tinning pot it may be passed downwards into a pot containing grease or flux or
suitable material through a pair or pairs of rolls immersed in the grease or flux or
and material below the bottom roll of each pair of rolls the bottom of the pot may
have circular bends formed in it in which molten metal carried over by the plates will
collect so that the lower rolls will always dip into molten coating metal and finally the
plates may be led upwards through other rolls and delivered from the grease or flux
or material or be delivered by a cradle. The grease or flux pot is made at the exit end
with the bottom at a lower level than where it has curved pockets formed in it below
the rolls so as to form a well into which any excess of metal collecting in these
curved pockets may flow and be collected-all scruff and dross which may be formed
will also drop into this well. The metal collected in the well may from time to time
be pumped back into the first pot.
Dated this 16th day of M... 1007

page_text: Improvements in Apparatus for Coating Metal Plates with Tin or
other Metal.
We, DANIEL EDWARDS, Tin Plate Manufacturer, RICHARD LEWIS, Foreman, and
PHILIP JONES, Mechanic, all of the Dyffryn Iron and Tin Plate Works, Morriston,
Swansea, 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 :-
*
In the Specification of a former Patent granted to us No. 5702 in the year 1885 we
described means whereby with a tinning" pot of suitable dimensions we were able
to allow each plate which was to be coated to dwell at rest for a time in the melted
coating metal and yet to carry on the coating continuously and uniformly.
We also described using with such apparatus a "dipping" pot containing finishing
coating metal-the plates being introduced into such "dipping "pot by hand after
coming from the "tinning" pot.
$6
وو
According to our present invention we use a "tinning" pot constructed as described
in our former, Patent but in place of using in conjunction therewith a dipping
pot into which the plates have to be introduced by hand we form the apparatus in such
mannor that the plates are passed without handling from the grease or flux bath at
the exit end of the tinning pot to and through a second tinning pot the pair or pairs
of rollers in which pot are completely immersed in coating metal at a lower tempera-
ture than that in the first pot and then cause the plates to rise up from such second
pot through flux or grease contained in a bath above it. It is not essential that the
first or tinning pot should be formed in the manner described in our former Patent
but we prefer that it should be.
The drawing hereunto annexed is a longitudinal section of apparatus constructed in
the manner we prefer for carrying out our invention.
"
A is the "tinning pot containing the melted coating metal-B is the grease or
flux bath above it-C is the rack of curved guide bars into the spaces between which
the plates to be coated are inserted one plate into each space. The rack is shewn to
be formed to receive three plates so that two plates may be at rest in the bath of
melted metal whilst the third is being pushed forward to the withdrawing rolls D in
the grease or flux bath B.
So far the apparatus is the same as is described in the specification of our former
Patent except that the two pairs of rolls D instead of being as before placed vertically
one above the other are now in an inclined position.
As the plates emerge from between the upper pair of rolls they pass below curved
guide bars E which bend them downwards and conduct them to the nip of a pair of
rolls F which are completely immersed in melted coating metal contained in the
66 dipping" or finishing" pot G. It is necessary that the rolls F should be
entirely immersed in the melted metal otherwise "scruff or dross" floating on

page_text: the surface of the metal will tend to adhere to the rolls and then all plates as they
pass between the rolls will be marked by the patches of scruff or dross which are on the
plates and imperfect work results.
As the plates pass from the rolls F they come against curved guide bars H which
bend them again upwards and lead them to the lowest pair of rolls I by which the
plates are carried upwards through grease or flux contained in a grease pot K which
rests upon the top of the pot G-preferably the lowest pair of rolls I are made to dip
into the melted metal.
The trains of toothed wheels for driving the several pairs of rolls are shown by
dotted circles. The wheels for driving the rolls D and F receive motion by worm
and worm wheel gearing from the driving shaft L.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is :-
1. Apparatus for coating metal plates so constructed that the plates as they are
raised by rolls through a grease or flux bath from a pot containing coating metal are
deflected downwards by curved guides and without being passed between any nipping
rollers are conducted to rolls completely immersed in metal contained in a second pot
substantially as described.
2. The combination of a tinning pot such as is described in our former Patent and
curved guides to deflect the plates downwards as they emerge from this pot and
deliver them to other rolls completely immersed in a second bath of molten coating
metal substantially as described.
3. The construction of apparatus for coating metal plates with tin or other metal
substantially in the manner herein before described and illustrated in the drawing
annexed.
Dated this 15th dow of Wah 1000
CARPMAEL & Co.,
Agents.