Improvements in Machinery used in the Manufacture of Tin and Terne Plates.
Year: 1892

page_text: Date of Application, 25th Feb., 1892
Complete Specification Left, 24th Nov., 1892-Accepted, 7th Jan., 1893
PROVISIONAL SPECIFICATION.
Improvements in Machinery used in the Manufacture of Tin and
Terne Plates.
I, JOHN HENRY. ROGERS of Glyncoed, Llanelly in the County of Carmarthen,
Tin Plate Manufacturer, do hereby declare the nature of this invention to be as
follows:-
My improvements relate to machinery by which several plates are simultaneously
passed through a bath of molten coating metal and simultaneously raised up from
it and more especially to machines in which 8 or other number of plates to be
coated are placed into a rack above the centre of the bath of molten metal, are
taken from this rack and lowered down into two racks below which are immersed in the
metal one half into one rack and the other half into the other rack and are then
conveyed in these racks one set to one end of the bath and the other to the other
end of the bath and are then raised up out of the bath. In one arrangement
adapted more especially for finishing high class plates the plates as they are raised
up out of the bath are deposited into receiving racks at the two ends of the bath
and they are carried in these racks into a position above the ends of finishing
grease pots.
The plates in each rack are then taken from it by a lifting table and lowered
down into the grease and deposited into four racks or holders-these racks or
holders are then caused to travel along the grease pot and separate one from the
other to bring the plates below four pairs of continuously revolving withdrawing
rollers the proper amount of travel being given to each rack to cause each to come
below one pair of the rollers. All the plates are then raised in these racks and
their top edges passed to the nip of the rollers and are by the rollers drawn up out
of the grease and taken one by one by a boy and delivered to
finishing and dusting machinery.
any suitable
In order that the plates may pass out from between the rollers one after the
other and not simultaneously I cause them to be raised up to the nip of the rollers
by a lever arm which turns on a fulcrum at one end of the bath. When the plates
are to be raised the lever is turned on its fulcrum and brought against the bottom
edge of the plates-the plate nearest to the end of the lever is raised quickest and
first nipped by the rollers above it-afterwards the plate next to it gets caught by
the next pair of rollers and so on. When all four plates have been raised clear of
the four racks, all these racks are brought close together side by side and moved
into position for another set of plates to be lowered down into them.
In cases
where the rack which brings the plates from the coating bath to above the grease
pot is formed with 8 compartments and has four plates passed into four of these
compartments at one time and at another time into the four other compartments
the four racks in the grease will at one time have to be brought into one position
for plates to be lowered into them and the next time into another position. This I
do in the following manner. The racks are supported on guide rods at the two
sides of the bath-the rack nearest to the rollers has rods jointed to it which are
acted on by rotating cams. The direct action of the cam causes the rack to be
slidden from the position in which a plate is delivered into it to a position below
the last of the four pairs of rollers-its return into position for a plate to be placed
into it is effected by the rods being drawn back by the action of weights. The
extent to which the rods are drawn back is limited by one or other of two pairs of
stop pins when one pair of stop pins is brought into action the rack returns into
one position and when the other pair of stop pins is brought into action the rack
returns to its other position-the stop pins may be on discs to which a rocking or

page_text: rotating notion is given at the proper tines. The other racks receive movement
from the first rack. The first rack has rods extending backwards from it horizon-
tally these pass loosely through holes in arms extending from the next rack and
stops on the ends of the rods limit the distance which the first rack can travel away
from the second rack without drawing the second rack along with it. Similarly the
second rack is coupled to the third and so on.
For finishing plates of a commoner quality the four plates may be lifted up directly
from the bath of coating metal into a grease bath above it and delivered to four
pairs of rolls in this bath. In this case as the four plates which are raised simul-
taneously will at one time be raised from one side of the end of the bath and. at
another time from the other side of this end I employ guides carried in a rocking
frame to guide the plates as they rise from the racks in the bath of coating metal to
the rolls.
By rocking the frame the lower ends of the guides can at one time be brought
into position for plates to pass into them from four compartments of a rack at one
side of the end and at another time it can be brought into position for receiving
plates from a rack at the other side of the end.
This with dow of Who 1800
CARPMAEL & Co.,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Machinery used in the Manufacture of Tin and
Terne Plates.
1, JOHN HENRY ROGERS, of Glyncoed, Llanelly, in the County of Carmarthen,
Tin Plate Manufacturer, do hereby declare the nature of this invention and in
what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement :-
My improvements relate to machinery by which several plates are simultaneously
passed through a bath of molten coating metal and simultaneously raised up from it
and more especially to machines in which 8 or other number of plates to be coated
are placed into a rack above the centre of the bath of molten metal, are taken from
this rack and lowered down into two racks below which are immersed in the metal
one half into one rack and the other half into the other rack and are then conveyed
in these racks one set to one end of the bath and the other to the other end of the
bath and are then raised up out of the bath into a grease bath above it and
delivered to four pairs of rolls in this bath. In this case as the four plates which
are raised simultaneously will at one time be raised from one side of the end of the
bath and at another time from the other side of this end 1 employ guides carried in
a rocking frame to guide the plates as they rise from the racks in the bath of
coating metal to the rolls.
By rocking the frame the lower ends of the guides can at one time be brought
into position for plates to pass into them from four compartments of a rack at one
side of the end and at another time it can be brought into position for receiving
plates from a rack at the other side of the end.
In the drawings annexed I have shewn my improvements applied to apparatus
which in so far as regards the introduction of the plates into the bath of melted
metal the moving them endwise in the bath and the lifting them up out of the metal
is constructed substantially in the manner described in the Specification of a former
application for Patent No. 9341 of 1891.
Figure 1 is a side elevation partly in section.
Figure 2 is a plan of the metal pot and grease pots above it.
Figure 3 is a vertical cross section through the line A B Figure 1.
Figure 4 is a vertical section on a larger scale through the line C D.
A is the pot of coating metal kept heated in any desired manner.
B a flux
box above it. C is a rack above the flux box, it is divided into 8 or it, might
"

page_text: be other number of compartments each for receiving a separate plate. The rack
is carried by an arm C¹ which extends from a rock shaft C². When the rack is
to be filled with plates it is turned upwards into an inclined position and when
the plates are to be taken from it it is lowered into a vertical position as shown
in Figure 3.
The partitions of the rack are as shewn formed with ledges C³ at the bottom on
which the bottom of the plates rest.
DD are two pairs of racks immersed in the coating metal in the pot A, one
pair carried by a bar D' which extends along one side of the pot and can be moved
end wise to and fro through suitable bearings and the other pair carried by a similar
bar D' which is on the opposite side of the pot.
When one bar D' is moved in one direction the other bar is moved in the opposite
direction and at the end of each movement one of the two racks which each bar
carries is always brought to the centre of the pot and into a position to have plates
lowered into it from the rack C.
Each rack D is formed with four compartments if the rack (is formed with 8
compartments so that when these racks are at rest there are in the two racks which
are then at the centre of the bath 8 compartments ready to receive 8 plates from
the 8 compartments of the rack C.
To take the plates from the rack C and lower them into the racks D lifting
tables E are used. The racks are in vertical sections or divisions and the lifting
tables E can be raised or lowered through the spaces between these divisions. The
lifting tables are serrated on the top as shown in Figure 3. When the lifting
tables are raised the incline of the serrations comes below the plates and lifts them
at the same time that it moves them sidewise and takes them off from the ledges C³
so that the plates then rest on the lifting tables and when these tables are moved
downwards the plates go down with them clear of the ledges and are carried down
into the compartments of the racks D.
The lifting tables E are carried by a horizontal longitudinal bar F this at
its ends has lifting tables G extending from it similar to the tables E but without
the serrations on the top. When the bar F is raised the lifting tables G raise the
plates which are in those racks I) which are at the ends of the pot.
So far the apparatus is constructed substantially as described in the above
mentioned application for Patent.
H H are grease pots above the two ends of the pot in each of these are guides H
between which the plates are received as they are raised up from the pot. The
plates are led by these guides to pairs of rollers H which are also immersed in
the grease in the grease pot H and from these the plates are led up out of the
grease pot through other rollers H³ and taken away by an attendant as they come
from these rollers.
As the racks D which are at the ends of the pot and which have to have plates
taken up from them are at one time at one side of the pot and at the next time
at the opposite side-the lower ends of the guides H¹ have at one time to be
brought into position to receive plates from the one rack and at the next time from
the other rack. To admit of this the guides have a rocking motion given to them
in the following manner.
They are all secured together in one frame which at its ends is supported on
axes H.
An arm H also extends upwards from the frame and at its upper
end is coupled to the upper arm of a lever H which is on the outside of the pot.
The lower arm of this lever is coupled to one arm of a lever H' to other arms of
which are acted upon alternately by pins D× on the bars D₁ that carry the racks D.
In this way the guides H are rocked to one side or the other each time that the
bars D' are moved endwise in opposite directions.
K is a revolving shaft from which motion is transmitted to the various parts of
the apparatus.
;
A cam L upon it gives movement as described in the application for Patent
herein before mentioned to a pair of lever arms F1 which at their ends carry a

page_text: frame F to which the bar F is, attached and, give an up and down movement to
this bar.
The frame F has a vertical guide bar F rising up from it and extending through
a fixed guide F¹.
Above the top of the guide bar F3 is suspended a weight M by a wire cord. M¹
which passes over guide pulleys and downwards to an arm C₁ fixed on the rock
shaft C which carries the rack C. When the frame F' and vertical guide bar. F³
are raised the guide bar lifts the weight M and then the rack C is lowered into
position just above the flux box B and the rack remains down in this position so
long as the weight is upheld by the guide bar F³. When this bar has descended
far enough to allow the weight to hang upon the cord M' the rack C turns
upwards into an inclined position and when in this position plates can readily be
placed into it by an attendant.
The bars D have movement given to them simultaneously in opposite directions
as described in the previous application for Patent hereinbefore mentioned by their
being connected by links D one to a lever D³ the other to a lever D-the lever D³
is continued beyond the axis on which it rocks and a pin D extending from this
continuation is moved first in one direction and then in the opposite direction by
arms N N on a rocking shaft N. Similar arms N2 N3 on this shaft act on a pin D
which extends from the lever D' and during the time that one of each pair of arms
leaves the pin and the other one coming into contact with it the levers and therefore
the racks remain at rest. The shaft N has a rocking motion given to it by an arm N³
which extends from it being coupled by a rod N to a crank pin O which stands out
from one side of the cam L.
The several pairs of rollers H2 H3 are driven by gearing from a continuously
revolving shaft as shewn in Figures 1 and 4.
The operation of the machine is as follows:-One boy fills 8. plates into the
rack whenever it is raised into its inclined position. As the shaft K revolves the
filled 'rack is lowered into position over the grease pot. The lifting tables, then rise
and take the plates from the rack and deliver thein into two of the racks D which
are below it. These racks are then shifted one to one end of the metal bath and the
other to the opposite end.
The lifting tables are next caused to rise and raise the plates up from these
racks and deliver them to the rolls H2 in the grease pots H and other boys
take the plates from them one by one and pass them on to be finished preferably
by being passed through bran or other cleaning material and subsequent
dusting. At the same time the tables again take other fresh plates which are
to be coated from the rack C which has again been filled and so the work goes on.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is.:-
1. The construction of apparatus used in the manufacture of tin and terne plates
substantially as hereinbefore described.
2. The combination of the pot of coating metal, the two pairs of racks
immersed in the metal, mechanism for shifting these pairs of racks end wise
and for lowering plates into them whenever they are brought to the centre of
the pot and for raising the plates out of the racks whenever they are brought
to the ends of the pot, the grease pots above the two ends of the pot, the pairs
of rolls within these pots, the guides for leading the plates to these pairs of rolls
and mechanism for rocking the guides to bring them into position for leading the
plates to the rolls from whichever rack the plates are being lifted from.
Dated this 22nd day of November; 1892.
CARPMAEL & Co.,
Agents for the Applicant.