Metais or Alloys.
Year: 1888

page_text: Metais or Alloys.
We, HENRY FRANCIS TAYLOR and WILLIAM PEDDIE STRUVÉ both of the firm of
Taylor, Struvé, Eaton and Price of Neath and Briton Ferry in the County of
Glamorgan, Engineers do hereby declare the nature of this invention to be as
follows.
In Taylor and Leyshon's Patent Specification No. 2106 of 1882 are described
means for coating and finishing plates in one operation and by one apparatus in
which are used a cradle and cradle guide or gate with nipping appliance for pulling
down the plate to be coated which then brought over to the exit side and raised
into the nip of the rolls on that side of the pot.
Now according to this our invention we provide in connection with that apparatus
or with apparatus operating in such or similar manner certain appliances for mechani-
cally operating the nipping appliance and the cradle or parts supporting the plate so
that when the plate has been put into the nipping appliance and cradle these shall be
depressed and the plate released and canted and raised on the exit side special means
being provided for avoiding all possibility of buckling of the plate while rising up to
the rolls on the exit side. We operate these parts from the roll driving shaft or other
suitable rotating shaft by means of crank pin eccentric or grooved or other cam with
or without vibrating slot link. Sometimes we provide the cradle or other part with a
yielding connection or other means for preventing the aforesaid buckling. The form
of the present nipper appliance is also modified by shifting the fulcrum. We also
connect the nipper rod and cradle rod by a spring appliance or other frictional means
so that the one will drag down the other to a certain point and then release it. We
also provide special means for canting the gate or cradle guide and plate.
In one form of apparatus we provide a crank pin, cam or eccentric in connection
with the roll driving shaft and by connecting rod operate a lever on a weigh shaft
which by another lever thereon communicates up and down motion to the nipper rod.
The fulcrum of the nipper hook or finger instead of being at the rear as described in

page_text: the aforesaid Specification is arranged intermediately between the hook part proper
and the joint for connecting the moving rod thereto. By means of tooth wheel
segment in connection with the roll driving shaft and gearing with a tooth rack we
operate the gate for canting the plate over to the exit side a weight or spring bringing
the gate back. Or we cant the gate by a pin or tappet which in its rotation comes in
contact with a sliding rod connected to the gate lever. The yielding part of the
cradle which supports the plate is jointed to the other part. This jointed yielding
part may be in the form of two levers united by a cross piece which in the rising of
the cradle offers a certain resistance to the molten metal. Sometimes as required we
connect thereto a weighted rod. In order that that the cradle rod may work at the
required speed for all classes of plates and be supplied with plates at the proper rate
for the largest possible output of work the plate would at a certain point be raised
quicker than the rolls could take it but the yielding appliance just described
counteracts this and thus prevents any hurt to the plate. The cradle rod and nipper
rod may be held together by a staple or eye. When the apparatus has been brought into
the proper position the nipper hook or finger being open ready to receive the plate, the
latter is inserted and the aforesaid connecting rod and lever gear cause the nipper rod
to descend and as the cradle rod is held by a friction appliance or drag spring on a
link or other support from the pot or framing the nipper finger will close upon the plate
and hold it and in the further descent of the nipper rod pull down the cradle rod with
it, until the plate has been pulled down far enough to pass under the exit grease
hopper, whereupon the cradle rod will be released from the friction appliance and drop
thus opening the nippers and releasing the plate. Meanwhile the gate is canted and
the cradle is lifted until the plate is put into the nip of the rolls. The gate has
meanwhile been brought back and the upward movement is continued until the cradle
is raised sufficiently to receive another plate.

page_text: COMPLETE SPECIFICATION.
Improvements in Apparatus for Coating with Tin, Lead, or other
Metals or Alloys.
We, HENRY FRANCIS TAYLOR and WILLIAM PEDDIE STRUVE, both of the firm of
Taylor, Struvé, Eaton and Price of Neath and Briton Ferry in the County of
Glamorgan Engineers 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 Taylor and Leyshorn's Patent Specification No. 2106 of 1882 are described
means for coating and finishing plates in one operation and by one apparatus in which
are used a cradle and cradle guide or gate with nipping appliance for pulling down
the plate to be coated which is then brought over to the exit side and raised into the
nip of the rolls on that side of the pot.
Now according to this our invention we provide in connection with that apparatus or
with apparatus operating in such or similar manner certain appliances for mechanically
operating the nipping appliance and the cradle or parts supporting the plate so that
when the plate has been put into the nipping appliance and cradle these shall be
depressed and the plate released and canted and raised on the oxit side (special means
being provided for avoiding all possibility of buckling of the plate while rising up to
the rolls on the exit side). We operate these parts from the roll driving shaft or
other suitable rotating shaft by means of crank pin, eccentric or grooved or other
cam. We also provide the cradle or other part with a yielding connection for pre-
venting the aforesaid buckling. The form of the present nipper appliance is also
modified by shifting the fulcrum. We also connect the nipper rod and cradle rod by
a spring appliance or other frictional means so that the one will drag down the other
to a certain point and then release it. We also provide special means for canting the
gate or cradle guide and plate.
In the accompanying drawings we have illustrated one form of apparatus
Figures 1, 2, 3, 4 and 5 being vertical sections through the apparatus shewing the
vorking parts in five different consecutive positions or stages. Figure 6 is a plan.
Figure 7 is a plan of one form of pot and Figures 8 to 11 are detail views drawn to
larger scale. We provide a crank pin A fixed to the wheel A' which is mounted to
otate freely on a pin fixed in a standard Q. This latter is made to shift on its bed
s will be presently described. This crank pin A or a cam or eccentric we rotate by
oth wheel gearing A* A³ or otherwise from the roll driving shaft A' and by means
a connecting rod A² we operate a lever B on a weigh shaft B which by another
ver B thereon communicates up and down motion to the nipper rod C. The con-
ecting rod A² has holes say four as here shewn, at the end where it connects to the
ver B for the purpose of shortening or lengthening the connecting rod A² as
quired when the tooth wheel A' has to be slided backwards or forwards with its
pporting standard or bearing Q for the purpose of adapting the apparatus for

page_text: working different depths of plates. When this is to be done we substitute a larger
or smaller pinion for the pinion A. In order to facilitate this altering of pinion
we make it by preference in halves so as to be readily removed and another
substituted.
The fulcrum of the nipper hook or finger D instead of being at the rear as described
in the aforesaid specification is arranged intermediately between the book part proper
and the joint for connecting the moving rod C thereto; also in order to give large
throw to the hook D and with uniform leverage we operate it by means of rack C
on the rod C gearing with a tooth segment on the hook D as shewn enlarged in plan
Figure 8 and sectional side view Figure 9. By means of tooth wheel segment A³ in
connection with the roll driving shaft A' and gearing with a tooth rack E that runs
on rollers E¹ E' and under a pin E all supported in suitable brackets, we operate the
gate F for canting the plate over to the exit side. The rack E may be connected
elastically with the gate F by means of the rod F1 which is in two parts, that are
connected by a helical spring in a sleeve F. A weight F³ or spring brings the
gate F back. Or we cant the gate by a pin or tappet from the shaft of the crank A
which pin in its rotation comes in contact with a lug on a sliding rod connected to
the gate lever, the weight F³ or a spring bringing the said rod back. The yielding
part G of the cradle, sec Figures 8 and 9, which supports the plate is jointed to the
other part. This jointed yielding part may be in the form of two levers G mounted
on fulcrum pins G² and united by a cross piece G¹ which in the rising of the cradle
offers a certain resistance to the molten metal. Sometimes as required we connect
thereto a weighted rod I Figure 2 which at its bottom end is hooked onto an eyebolt. I'
that is screwed into one of the holes G³ in lever G see Figure S. In order that
the cradle rod H may work at the required speed for all classes of plates and be
supplied with plates at the proper rate for the largest possible output of work the plate
would at a certain point be raised quicker than the rolls could take it, but the yielding
appliance G G regulated by the rod I which may be weighted above the molten metal
as required counteracts this and thus prevents any hurt to the plate. The cradle rod H
and nipper rod may be held together by a staple or eye H² which also acts as a
lateral guide for the rack C. When the apparatus has been brought into the
proper position Figure 1, the nipper hook or finger D being open ready to receive the
plate, the latter is inserted and the aforesaid connecting rod A2 and lever gear B B²
cause the nipper rod C to descend and as the cradle rod H is held by a friction
appliance or clamps K K with drag spring K2 in a holder K³ on a vibrating
link L or other support from the pot or framing the nipper finger D will close upon
the plate and hold it. The link I has a slot at its upper end and the clamp holder K³
can be fixed in the notch 1, 2 or 3 on the link according to larger or smaller size
plate to be coated. The lever B2 can similarly be connected to the nipper rod C by
one of the joint pin holes 1, 2, or 3. Holes are similarly provided for adjustment
at the end of the connecting rod A². In the descent of the plate it is pulled down
until the stepped part H' of the rod H meets the top part of the clamp K as shewn
in Figure 2 whereupon the rod H is instantly released from its frictional contact
with the clamp K and is free to drop into the position shewn in Figure 3 where the
nipper finger D has released the plate. The plate having been thus pulled down far
enough to pass under the exit grease hopper M the tooth segment A is now in
gear with the rack E and the gate F is being canted over as shewn in Figure 4.
When the gate F has been fully canted bringing the plate directly under the rolls
the horns on two of the gate bars F come under the bottom of the entrance flux
box R and thus prevent the attendant from dropping a plate in behind the gate
bars F. The cradle is next lifted until as shewn in figure 5 the plate is put into the
nip of the rolls N. The lever G at this stage dips as shewn so far as is necessary
to prevent the buckling of the plate or indenting the bottom edge of same owing to
the speed of travel of the lever B being at that point greater than the circum-
ferential speed of the exit rolls. For it is desirable to cause the plates to follow each
other as closely as possible without coming in actual contact as thereby the rolls
are kept what is technically called properly "wet" or in good coating condition.

page_text: The gate F has meanwhile been brought back and the upward movement is
continued until the cradle is raised sufficiently into the position Figure 1 ready
to receive another plate. T is a handle for throwing the pinion A' in and out of gear
with the wheel A.
By the aforesaid improvements we not only decrease the number of attendants
on such machines, and produce coated plates of a more uniform character and quality
of coating, but also render possible a greater rapidity and output of coated plates in
a given time. There is however a limit as to speed viz. the increased pressure
against the side of the plate when it is quickly canted over as the molten metal cannot
escape sufficiently quickly laterally from between it and the inner front side of the
coating pot. In order therefore to remedy this as much as possible we prefer to
alter the form of the pot and instead of the usual ribs with intermediate bays in
which the molten metal heretofore became enclosed more or less when the plate
was canted towards the exit side while part of it rushed off laterally we use as shewn
in figs. 1 to 6 a grid 0, 0, by preference of cast iron, this grid is so formed and
placed as to leave sufficient space between bars O and between them and the
front P of the pot as to allow the molten metal to escape freely without much
pressure or scour. Also as shown in the plan view Figure 7 of a pot, we round
off the inner front corners in the part of the pot containing the molten metal
whereby we save weight of molten metal while at the same time facilitating the easy
flow of it in the direction of the arrows when the plate is canted back against the
grid. By this form of pot we also render it less liable to crack by overheating or too
sudden heating.
Having now particularly described and ascertained the nature of our inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
First The improvements in the construction of the cradle and nipping appliance
described in patent specification 2106 of 1882 whereby it is adapted to be operated
mechanically instead of by hand substantially as described and shown.
Second The construction of the apparatus substantially as described and shewn
for mechanically operating the cradle and nipping appliance in pots for coating with
in, lead or other metals or alloys.
Third-In connection with a mechanically operated plate nipping, taking down,
eleasing, and lifting appliance, the application and use of a crank shaft with
movable bearing or standard and with connecting rod adjustable as to length for
lifferent depth of plates substantially as described and shewn.
Fourth-The grid 0, 0, for the purpose of giving facility for increased speed
na mechanically operated coating appliance substantially as described as shewn.
Fifth-The improved construction of pot for the purpose of giving facility for
ncreased speed in a mechanically operated coating appliance and for saving weight
f molten coating material and lessening the liability to cracking of the pot substan-
ally as described and shewn.
Dated this 21st day of T1000