Improvements in Apparatus used in the Manufacture of Tin Terne and other Coated Metal Plates.
Year: 1891

page_text: Date of Application, 5th Jan., 1891
Complete Specification Left, 5th Oct., 1891-Accepted, 5th Apr., 1892
PROVISIONAL SPECIFICATION.
Improvements in Apparatus used in the Manufacture of Tin Terne
and other Coated Metal Plates.
I, DANIEL EDWARDS, of Dyffryn Steel and Tin Plate Works, Morriston in the
County of Glamorgan, Tin Plate Manufacturer, do hereby declare the nature of
this invention to be as follows:-
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In the Specification of a former Patent No. 17169 in the year 1887 is described
apparatus by which a plate after it has risen up from the rolls in a tinning bath is
conveyed away and delivered to rolls in a dipping pot containing finishing
coating metal.
The object of my invention is to provide improved means for
effecting this object. For this purpose I cause each plate as it rises up from the
delivery rolls of a tinning pot to slide upwards along a rocking frame which is then
at rest in a plane parallel or approximately so with the plane in which the plate is
travelling. The sides of this frame are free to be slidden to and fro along guides
which are carried by horizontal axes that are parallel with the rolls in the pot.
The lower end of the frame is carried by arms which extend from a horizontal axis
that is below the axes of the guides and to which a rocking to and fro motion can
be given. When the frame is in position for a plate to pass upwards on to it these
arms incline upwards so that their ends come towards the rolls up through which
the plate is rising. When the plate has risen nearly to the top of the frame its
upper edge enters a clip which the frame carries, the clip being at this time held
open. As it passes into the clip it comes against a trigger lever, when the trigger
is moved it allows a continuously rotating wheel to be locked to an eccentric and to
give to the eccentric one complete turn.
The eccentric as it turns first depresses an arm on the rocking axis above
mentioned, and so rocks this axis in a direction to raise the arms which extend
from it and which carry the frame and then to incline them over in the opposite
direction, thereby bringing the frame and the plate which it carries into a plane to
allow of the plate being delivered to the dipping pot.
As the frame comes into this position the clip which had closed when the
frame commenced to move opens (by an arm on the axis of its movable jaw
being brought against a fixed stop) and allows the plate to drop to the nip of
Afterwards the further rotation of the
a pair of rolls in the dipping pot.
eccentric brings the frame back to its original position ready to receive another
plate.
The eccentric may at the times required be locked to the continuously rotating
wheel by a lever catch carried by an arm on the eccentric being forced by a
lever which is then made to bear against it to move towards and engage with
So soon as the catch
teeth formed around the circumference of the wheel.
engages with the teeth of the wheel the eccentric commences to turn the lever
catch is then prevented from escaping from the teeth by a fixed ring which
closely surrounds its circumference and the eccentric continues to turn with the
wheel until the lever catch is brought opposite to a notch in the ring-the lever
catch is then by a spring or weight disengaged from the wheel and the eccentric
stops.
Deted this Third day of January 1891.

page_text: COMPLETE SPECIFICATION.
Improvements in Apparatus used in the Manufacture of Tin Terne
and other Coated Metal Plates.
I, DANIEL EDWARDS, of Dyffryn Steel and Tin Plate Works, Morriston, in the
County of Glamorgan, 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 ascertained in and by the following statement :-
In the Specification of a former Patent No. 17169 in the year 1887 is described
apparatus by which a plate after it has risen up from the rolls in a tinning bath
is conveyed away and delivered to rolls in a "dipping" pot containing finishing
coating metal. The object of my invention is to provide improved means for
effecting this object. For this purpose I cause each plate as it rises up from
the delivery rolls of a tinning pot to be received upon a rocking frame; it
touches a trigger lever which causes movement to be imparted to the frame and
clipping instruments to come into operation to hold the plate in the frame. The
frame rocks into another position, and the clipping instruments liberate the plate
which then falls into the nip of the roller in the dipping or finishing pot.
frame then returns to its original position ready to receive and then to convey
another plate.
The
In order that my invention may be fully understood and readily carried into effect
I will proceed to describe the drawings hereunto annexed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a plan of the transferring apparatus and of the rolls in the tinning
and the dipping pots respectively.
Figure 2 is a side elevation of the principal parts.
Figure 3 is a section showing the rocking frame in the position in which it stands
ready to receive the plate from the rolls in the tinning pot.
Figure 4 is a section showing the rocking frame at the moment it releases
the plate and permits it to fall into the nip of the rolls in the dipping pot.
Figure 5 is a front elevation of the rocking frame with other parts at the moment
when the frame is released by the upper edge of the plate striking upon a part of
the trigger lever.
a a are rolls constantly revolving in the tinning pot in the direction indicated by
arrows; between these rollers the plate emerges from the pot.
bb are other rolls constantly revolving in the dipping pot or finishing pot in
the direction indicated by arrows; and these serve to carry the plate down into
the dipping or finishing pot.
c is a bar forming part of a rocking frame and d d are fingers upon an axis d¹
which is carried in bearings c¹ c¹ fixed upon the bar c. is an arm on the
axis d¹ and d³ is a spring surrounding the axis and attached to one of the
bearings c'. This spring tends to hold the fingers or clipping instruments & in
contact with the bar c. When the parts which transfer the plate from pot to
pot are at rest they occupy the position shewn in Figure 3, with the arm 2 resting
against a stop e (Figures 1 and 4) upon a standard which is part of the frame of
the machine.
In this position of rest therefore the fingers d are not in contact with the
bar c and when a plate rises between the rollers a its upper edge can pass between
the bar and the fingers d; the position of the bar c in relation to the rolls a is
such that the plate in rising takes this position.
f is a trigger lever pivoted at f¹ upon the bar c it has a pin f2 upon it and
the top of the plate thrust upwards by the rolls a strikes upon this pin and
moves the trigger lever, which starts the transferring apparatus.

page_text: The first effects are that the bar e moves upwards, the arm d leaves the stop e
and the fingers d close towards the bar c and hold the upper end of the plate
(which by this time has left the nip of the rolls a) securely against the flat
face of the bar c. The bar is fixed at its ends to the side rods g g of the
rocking frame which rods are able to slide through the guides and these are
pivoted at to the standards which constitute the frame of the machine. The
side rods g at their lower ends are jointed to arms on an axis i on which also
is a third arm i². is a constantly rotating axis driven in any convenient
manner, it has upon it an eccentric which in a manner hereinafter described is
from time to time clutched fast with the axis by the operation of the trigger lever f.
The eccentric has a strap which latter is jointed to the arm 2. Each operation
of the trigger lever causes one complete revolution of the eccentric, and in the
course of this revolution the axis i makes a partial rotation to and fro; the parts
leave the position of rest indicated in Figure 3 they pass without any pause through
the position shewn in Figure 4 and return to the original position of rest.
C
In Figure 4 it will be seen that the arm d² is in contact with the stop m and the
ends of the fingers d consequently leave the bar c and the plate which they till that
moment held against the bar c is allowed to fall. The lower end of the falling
plate instantly comes against the rolls to which it was very near at the instant
of release; it is caught in the nip of the rolls and is carried down into the
dipping pot from which in due course it is withdrawn by conveying rollers or
by any mechanism commonly employed.
The rise of a plate from the rolls a causes the movement of the rocking frame
and brings the transferring mechanism into action in the following manner :-
the trigger lever when the pin 2 upon it is pushed upwards by the upper
edge of the plate operates by means of another pin f³ at its other end, to move
the bolt lever n. The bolt lever is thus turned about a pivot at n' upon the
standard or frame, the movement taking place against the resistance of a spring n².
The bolt n³ which forms part of the lever n is thus drawn back. o is a pressing
lever, jointed to the frame standard at o'; when in the position of rest it is supported
by the bolt n which enters the notch o³ and resists the tendency of the spring p to
cause the pressing lever to descend.
7 is a toothed wheel fast upon the continuously rotating axis k and ris a
stationary guide ring surrounding the wheel q. s is an arm fast with the eccentric [
it carries a latch t which is jointed to it at t and at its other end is provided with a
tooth 2. In the position of rest the tooth t occupies a notch or recess in the
guide ring into which it is pressed by the spring 3; but when the bolt n³ is
withdrawn the pressing lever o causes the tooth t² to descend and to engage with the
teeth of the wheel, the eccentric then commences to revolve. The tooth t² is
retained in engagement with the wheel 7 by the guide ring until a rotation is com-
pleted and it again reaches the recess Meanwhile the pressing lever o has been
lifted by the action of the rod u which at one end is jointed to the eccentric
strap and at the other has an elongated hole or slot into which the pin o² on the
tail of the pressing lever is received. When this rod draws down the tail of
the pressing lever, thereby raising its other end past the bolt n³, this bolt, as soon
as the way for it is clear, advances and it then projects beneath the pressing lever
and holds it up until the bolt 3 is again drawn back by the action of the trigger
lever fas already described.
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. In apparatus for the automatic transference of plates from rolls in a tinning
pot to other rolls in a dipping or finishing pot; intermittently moving carrying
parts caused to operate at the proper time substantially as described by a trigger
struck by the plate rising from the rolls in the tinning pot.
2. In apparatus for the automatic transference of plates from rolls in a tinning

page_text: pot to other rolls in a dipping or finishing pot; the combination of parts consisting
of a rocking frame receiving the plate from the first-mentioned rolls, clipping
instruments on the rocking frame which take hold of the plate; a trigger moved by
the plate a clutch brought into action by means of the trigger; a retaining ring
or guide which holds the clutch in gear with a rotating axis whilst the cycle of
movements is performed; stops or instruments which cause the clips to open at
suitable times and the rolls in the tinning or finishing pot which receive the plate
when it is released by the clips.
3. Apparatus substantially as herein described and illustrated by the annexed
drawings.
Dated this 5th day of October 1891
CARPMAEL & Co.,
Agents.