Improvements in and relating to Joining, Coating, and otherwise Treating Sheet Metal Plates, and to Apparatus therefor.
Year: 1891

page_text: Date of Application, 28th Apr., 1891-Accepted, 11th July 1891
COMPLETE SPECIFICATION.
Improvements in and relating to Joining, Coating, and otherwise
Treating Sheet Metal Plates, and to Apparatus therefor.
I, SAMUEL YARDLEY BUCKMAN, of No. 1906 North 24th Street, Philadelphia
Pennsylvania United States of America, 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 :-
My invention relates to methods of and apparatus for coating sheet metal plates
with tin or alloys thereof.
My invention comprises an apparatus or plant composed of devices each of which
is adapted to perform a separate step in the process or method, the respective
devices having their operating mechanism so connected that the plates to be coated
are received into the apparatus and automatically passed through the same, forming
a continuous tinned or coated sheet.
My said invention also comprises novel cleansing devices for removing foreign or
loose material from the surface of the plates and a novel drying device for
removing the moisture from the plates when cleansed, also amalgamating, supply
and dipping pots, formed as herein described, and a novel arrangement of the
furnaces for heating the same.
It also comprises an edging device as hereinafter described for uniting the ends
of the plates and thereby forming a continuous sheet of the same, and mechanism
connected with the feed rollers of the device for operating the same in connection
with an edging device either simultaneously or in sections as desired, and further, a
novel reeling device for rolling the tinned sheets in bundles.
My invention also comprises a new method of uniting the ends of the plates for
forming a continuous sheet, an improved method of preparing the metal plates for
coating the same, and a method hereinafter set forth of preparing and coating the
metal plates.
My invention further comprises various details of construction and in combinations
of parts hereinafter fully described.
In the accompanying drawings
Figures 1, 2 and 3 represent together a longitudinal sectional view in elevation
of a portion of cleansing and drying devices embodied in my invention.
Figure 4 represents a longitudinal sectional view of an edging device and a
portion of a flux box.
Figure 5 represents a longitudinal sectional view of a flux box and supply pot
with one end of the dipping pot.
Figure 6 represents a central longitudinal sectional view of the dipping pot.
Figure 7 represents a longitudinally sectional view in elevation of guide and feed
rollers with burnishing devices.
Figure 8 represents a cutter and a reeling mechanism.
Figures 9 and 10 represent respectively plan and side view of detail portions of the
operating mechanism of the apparatus.
Figures, 11, 12, 13, 14, and 15 represent operative mechanism for the different
devices and the feed rollers.
Figure 16 represents a sectional view in elevation of the dipping pot and the
supply and amalgamating pots with furnaces.
Figure 17 represents a side view of a portion of the edging device and operating
mechanism on an enlarged scale.
Similar letters of reference indicate corresponding parts in the several figures.
A designates a scouring device consisting of the boxes B and C, each having the
slots D on its opposite sides for the passage therethrough of the metal plates
[Price 11d.]

page_text: which are to be coated, and provided with the perforated guides E, in the sides of
which, the edges of the said plates are guided. Mounted in the walls of the said
boxes are the journals of the rotary brushes F, F, and G, G ; one pair F, F, being
in one of the boxes and on one side of the path of travel of the plates, and the
other pair G, G, being in the other box and on the opposite side of the said path of
travel. The brushes of each pair are provided with any suitable mechanism for
rotating them in opposite direction and towards each other, as shown by the
arrows a and b, so as to neutralize their frictional contact with the plates. Leading
into each of the boxes B and C are the chutes H for conveying sand or other
scouring material to said brushes, said sand falling on the brushes which thus
brings it in contact with the plates.
The spraying device consists of a box J having slots in its sides for the passage
of the plates, and provided above and below the path of travel of the plates with a
number of horizontal pipes K, each being inclined or at an angle to the sides of
the box J, so as to have a greater length therein, and thereby be adapted to
discharge the water from a slot L therein over a larger surface of the plate, to
remove more readily the sand and other loose particles of matter thereon.
Secured
to the sides of the box .J, and extending across the same are the guides M having
their lower ends reinforced with leather or other suitable tips N, so as to more
reliably keep the water, which is on the plate, from escaping at the slots in the ends
of the box.
Rotary drying rollers M* for removing the water from the face of the plates
after leaving the box ?, are placed on the outside of the said box, each of said
rollers consisting of an iron or other metallic body P, with a rubber covering Q
thereon, adapted to contact with said plates.
R designates a drying device consisting of one or more pairs of metal rollers S,
each having a felt covering T, which is partially surrounded by a steam jacket U
having a suitable supply pipe V. The said steam jackets are provided with a
manganese covering, so as to prevent the radiation of the heat therefrom, and the
jackets of each pair of rollers are connected at their ends and have a drip pipe W
for conveying therefrom the condensed steam.
X designates an edging device or former for automatically bending the adjacent
edges of the plates of metal to be coated, and connecting them together, so as to
form a continuous sheet. Secured to a suitable frame Y is an inclined or guide-
way Z, in which a former or folder A¹ and a clamp B' are operated. The upper
end of the clamp B' is formed with a level surface, so as to be adapted to contact
with a plate of sheet metal, and hold the same firmly against the underside of the
bed plate C, while the front edges of the sheet metal plate is being bent over the
edge and on the face of the said bed plate C¹ by its contact with the upper end of
the folder A. The lower ends of the folder A¹ and clamp B' are connected with
the toggle levers D' and E¹ respectively, and the said levers are also pivoted to
the frame Y and connected to other toggle levers F¹ and G¹³ also pivoted to the
frame.
On the shaft H¹ are the cams J' and K' adapted to bear against the toggle
levers F¹ and G¹ so as to move the same, and thereby the levers D' and E¹, and
consequently the folder A¹ and clamp B¹.
L' and M' designate respectively a second folder and a second clamp designed
to bend the rear end of a plate which has been passed through the edging device
previously to the plate which is having its front end bent by the folder A¹. The
folder L is provided with an angular upper end adapted to bear against the plate
and press the same against a bed plate P' fastened to the frame Y, said bed
plate having a transversely recessed portion Qin which the ends of the advanced
metal plate unfolded. The clamp M which is above the folder L is formed
similar to the clamp B₁ having a level upper end which in its upward movement
engages the sheet in advance of the folder and holds it in place while the latter is
pressing the end thereof into the recess Q, thereby preventing any backward move-
ment of the sheet. The folder L' and clamp N' move freely upon each other in

page_text: guides R' secured to the frame Y, similar to the guide Z, and are connected with
the toggle levers U₁ and V₁ also pivoted to the frame and operated respectively by
the cams W and Y' on a shaft 21 mounted in the frame Ỷ and parallel with the
shaft H. A guide A× for the plates is connected to the frame Y between the
two sets of folders. The said shafts H¹ and Z¹ are connected by any suitable
gearing with a main driving shaft A' of the apparatus, so as to be rotated thereby,
the cams being so placed, and the parts so timed that the clamp of each folder
moves a little in advance of its folder.
B' designates a dipping pot having top and bottom walls of U-shape with an
entrance limb C2, and an exit limb D on opposite sides thereof. A supply pot E'
has a duct F which leads from the lower portion thereof to the upper portion of
the dipping pot; and an amalgamating or melting pot G², in which the coating
material is first placed, has a duct H2 at its base leading into the supply pot.
Above and seated on the supply pot, so as to be highly heated thereby, is a flux
box J', which at one end is adapted to receive the sheet as it leaves the edging
device, and at the other end communicates with the entrance limb of the dipping
pot. The said dipping pot has a separate furnace K from the amalgainating and
supply pots furnace 1, but has its entrance limb Cso exposed to the said
furnace L as to receive heat therefrom in addition to the heat received from its
own furnace K³, whereby the contents of the said limb becomes more highly heated
or is raised to a greater temperature than the contents of the opposite or exit
limb D. The dipping pot B2 and the flux box J2 are each provided with a series
of feed rollers M², each pair of which extends transversely thereof, and is adapted
to be in contact with the sheet of metal plates so as to aid in advancing the same
through said pot and box. The upper one of each of said pairs of rollers in the
pot B is journalled in the lower ends of the bars N', which latter are adjustable
in the tubes P' by means of the caps Q working on screw-threaded portions of
said rods.
The said tubes P2 are secured to extensions of the sides of the walls of the
dipping pot, and the said caps Q' are swivelled to said tubes so as to have rotary
motion on the bars N2, but prevented from longitudinal motion in reference to the
tubes. Mounted on the journals of the upper rollers M³ are pinions R² the latter
having meshing gearing, which with the pinions of the said lower rollers is jour-
nalled in the side walls of the said dipping pot. Within the said flux box and
dipping pot and secured to the sides thereof between the rollers M² are the
guides S each formed of a perforated base portion and side pieces T2, in the
latter of which the edges of the metal sheet that is being coated, are guided.
The dipping pot is provided with a supporting leg Vs which rests on a separating
partition wall W of the furnaces K and L, and has an opening X' therein for
the passage of the products of combustion from the furnace K² into the fire
chamber of the furnace L³, so as to aid in super-heating the entrance limb of the
dipping pot, as well as to utilize the heat from the said furnace K² in melting the
coating material in the amalgamating pot G³.
In a side wall Y' of the furnace K is a damper 7 by means of which the heat
of the said furnace can be directed to the chamber Zx and so uniformly heat all
portions of the dipping pot.
In contact with the exit limb D' of the dipping pot, and extending across the
same is the chamber or passage A³ through which currents of cold water may be
passed for cooling the contents of the said limb.
In the exit limb D2 and above the level of the coating material are journalled
the squeezing rollers B³ for regulating the thickness of the coating of tin or alloys
thereof on the sheet.
C³ designates a guide pulley or drum over which the sheet is passed on its way
to a burnishing device D³, which latter is of any usual and well known construc-
tion, and as shown consisting of the rotary boxes E³, filled with mineral wool or
other suitable material adapted to be brought in contact with the sides of the
coated sheet so as to polish the same,

page_text: F³ designates a device for cutting the sheet in lengths as desired, said cutter
being of any well-known construction, and forming per se no part of this inven-
tion is not herein more specifically described.
Secured to one end of the frame of the cutter is a pivoted table G³ resting on a
cam H³, which latter is connected with a rotary shaft J, whereby as the said shaft
is rotated, the table is either raised or lowered so as to be in line with one or the
other of the removable rotatable drums K L³, which are thereby adapted to
receive the coated metal sheet, forming rolls of the same. The said drums are
suitably mounted on the standards M³, an idler N³ gearing with pinions mounted
on their shafts so that they may be rotated in the same direction.
In front of the cleansing device and between the different parts of the apparatus
are the feed rollers Ps for conveying the plates, and sheets when formed by the
edging device, automatically through the said parts. The feed rollers in front of
the edging device are connected by gearing to a secondary shaft Q³, and the feed
rollers in rear of said edging device are geared to the secondary shaft R', said
secondary shafts being parallel with the main driving shaft to which they are
connected by clutch mechanism and gearing as follows:-
On a counter shaft S³ which is connected by gearing with the main driving
shaft, is secured a cam grooved wheel T3, the rotation of which operates a pivoted
lever Us so as to move a detent V³ fitted in a sleeve Wx secured on the secondary
shaft R³, so as to rotate therewith. A. loose gear wheel W mounted on the shaft R³
meshes with a gear wheel X8 secured on the main shaft so as to be rotated
thereby. A similar clutch mechanism connects the shaft Q with the main driving
shaft.
The parts of the said clutch mechanism are so timed that the loose wheel W*
of the shaft Q³ will be connected with its shaft a short time in advance of the
connection of the wheel W of the shaft R³ with its shaft, for a purpose herein-
after explained.
The main shaft being in operation, the method of tinning or coating the plates
is as follows:-The said plates are drawn between the pair of feed rollers at the
front of the box B of the scouring device into the latter, and guided on the ways E
through the same, the sand or other scouring material being fed to the brushes I, F,
which contact with the one side of the plate so that the loose scales or other
impurities clinging to said plate are detached. Owing to the brushes rotating in
opposite directions, the amount of resistance offered by one brush to the advance
of the plates is neutralized by the assistance given by the contact of the other
brush so that the plate is neither impeded nor advanced by the contact therewith
of the said brushes, thus permitting the feed rollers to perform the entire work
of drawing the plate through the device.
After passing through the box B, the plate is drawn into the box C, where a
- similar operation to that performed on the one side thereof by the brushes F, F, is
performed on the other side by the brushes G, G, which also rotate in opposite
directions for the same reasons as the brushes F, F.
The plate thus scoured or scrubbed passes into the spraying box J, where the
water from the pipes K is sprayed through the slots L against the sides of the said
plate, washing the same and removing all the loosened particles of matter there-
from. From the spraying box the plate is drawn between the rubber coated
rollers M* so as to remove the moisture or water adhering to the plate, and then
it is passed between the felt covered rollers S, the felt covering being dried by
contact with the steam jackets.
The advance or first plate is passed through the edging device so that its rear
end is above the second holder at the same time that a second plate following the
first has its front end above the first folder, each succeeding plate being fed at like
intervals to the apparatus.
The secondary shafts which operate the feed rollers are then stopped by means
of the clutch connections, and the mechanism operating the clamps and folders are
then put in operation, opening the toggle levers and forcing the clamps and folders

page_text: in contact with the respective ends of the plates so as to form hooks on the same.
The folders and clamps are then lowered by means of their toggle lever and can
mechanisin so as to free the plates and the secondary shaft Q is rotated by means
of its clutch connection with the main shaft so that the feed rollers in front of the
edging device advances the rear plate on the guide A* until its hook has reached
the hook on the rear end of the front plate, when it readily unites with the same.
The secondary shaft R³ is then operated by means of its clutch connection with
the main shaft so as to advance the sheet thus formed. It will be seen that the
clutch mechanism of the secondary shaft Q3 is so operated as to connect its shaft
with the main shaft slightly in advance of the time of the operation of the clutch
of the shaft R³ so as to advance the rear plate and permit its union with the front
plate before the feed rollers advance the sheet thus formed.
Previous to the forming of the hooks on the ends of the sheets the portion of
the said ends which form the inner faces of the hooks are coated with a paste
formed of grease and a fusible powder, so that all portions of the sheet on both
sides may be thoroughly coated.
The sheet is now advanced until the end of the rear plate is above the folder,
when the secondary shafts are stopped, in the meanwhile the hooked ends of the
plates have passed between the feed rollers and are thereby clamped together. The
parts of the apparatus are of such proportions that the first plate of the sheet has
passed through both the flux box and into the dipping pot, and a new plate has been
fed to the edging-device.
When the rear end of the sheet is above the folder L', the front end of the new
plate is above the folder A', where-upon the operation is the same as has been
described.
The sheet of metal on leaving the edging device enters the flux box J³, which
preferably is of such length as to expose to the grease bath therein substantially as
much surface of the sheet as will be exposed to the coating material when the sheet
is in the dipping pot.
Only pure coating material enters the dipping pot from the supply pot as the
flow into the same is from the bottom of the latter, thus leaving any dross or
impurities therein, or at the surface above the duct F in the said supply pot.
As the sheet enters the limb C2, it comes in contact with the superheated metal
through the pot and passing into the exit limb D' it comes in contact with metal at
a less degree of temperature than that in the limb C².
By having the melted coating in the pot at two different temperatures, the one
passage therethrough serves in place of two separate dippings in different pots,
so that by this process what is termed as a rolled or hand dipped plate can be
produced.
On the exit of the sheet from the melted coating in the limb D', it enters a flux
box formed in the upper part and continuous of the said limb, where it is passed
between the squeezing rollers B³, which are geared to the train of gearing of
the rollers in the dipping pot, and control the thickness of the coating on said
plate.
After leaving the squeezing rollers, the sheet is drawn between the rotary boxes
of the burnishing device D³ where it comes in contact with the mineral wool or
asbestos therein so as to receive a polished or smooth surface. It is next passed to
a suitable cutting device and fed on the rising and falling table to the removable
drums.
•
The devices herein described are preferably placed in the order herein set forth,
and may be either on the one floor or ground, or on different floors as shown in the
drawings, and parts of the devices such as the cutting, and burnishing and reeling
may be omitted without departing from the essential features of my invention.
It will be seen that by the mechanism herein set forth a continuous metallic sheet
can be automatically formed of any length and of any number of plates, and when
thus formed, passed through a dipping pot, whereby it is coated uniformly on both
sides without turning the same,

page_text: Having now particularly described and ascertained the nature or my said inven
tion and in what manner the same is to be performed, I declare that what I
claim is:-
First. An apparatus for cleansing metal plates, connecting successive plates, and
coating the sheet thus formed, with tin or alloys thereof, having cleansing, edging,
coating, burnishing, cutting and reeling devices, feed rollers in front and rear of
said edging device, separate mechanism connected with a main driving shaft for
operating the edging device independent of the feed rollers, and mechanism con-
nected with the main shaft for operating the feed rollers, said parts being combined
and arranged in the order named, substantially as described.
Second. In an apparatus for the purpose set forth, the combination of cleansing,
edging and coating devices, feed rollers in front and rear of said edging device, a
main driving shaft, mechanism connected therewith for operating the feed rollers,
and separate mechanisin also connected with the main shaft for operating the edging
device, substantially as described.
Third. An apparatus for the purpose set forth having devices for cleansing sheet
metal plates, an edging device for connecting successive plates, a coating device,
and feed rollers in front and rear of said edging device, said rollers having
operating mechanism including clutch connections with a main shaft, and said
connecting and edging devices having separate operating shafts, said parts being
combined and arranged, substantially as described.
Fourth. An apparatus for coating sheet metals with tin or alloys thereof, having
cleansing, edging, coating and burnishing devices, feed rollers in front and rear of
said edging device, separate operative mechanisms for said cleaning, edging coating
and burnishing devices connected with a main shaft, a secondary shaft for a part of
the feed rollers, and another secondary shaft for the other feed rollers, each of said
secondary shafts having a clutch connection with the main shaft said parts being
combined substantially as described.
Fifth. An automatic tinning plant consisting of a cleansing device, an edging
device, a coating device, and a burnishing device, feed rollers in front and rear of
said edging device, a main driving shaft, secondary shafts for operating the edging
device with mechanism uniting them with the main driving shaft, and separate
secondary shafts having clutch connections with the main driving shaft for
operating the feed rollers in front and rear of the edging device, said parts being
combined and arranged in order, substantially as described.
Sixth. An apparatus for coating sheet metal with tin or alloys thereof having a
cleansing, an edging, a coating and a burnishing device, feed rollers in front and
rear of said edging device, said cleansing and burnishing devices having separate
operating mechanisms connected with a main shaft, and the feed rollers having a
secondary driving shaft with a clutch connection with the main shaft, said parts
being combined substantially as described.
Seventh. An apparatus for coating sheet metal with tin or alloys thereof having
cleansing, edging, coating, burnishing and rolling devices, feed rollers, operating
mechanism for said devices connected with the main shaft, and secondary shafts for
the rollers having clutch connections with the main shaft, said parts being combined
and arranged in order substantially as described.
Eighth. An automatic apparatus for coating sheet metal with tin or alloys
thereof having cleansing, edging, coating and burnishing devices, feed rollers in
front and rear of said edging device, a main driving shaft, and mechanisms connected
with the main shaft for operating said cleansing, coating and burnishing devices,
and separate mechanisms for operating said edging device said parts being combined
and arranged in order so as to automatically and consecutively perform said
cleansing, edging, coating and burnishing substantially as described.
Ninth. An automatic tinning plant consisting of a cleansing device, an edging
device and a coating device, feed rollers in advance of said cleansing device, and
other feed rollers in rear of said edging device operating mechanisms for said

page_text: edging device connected with the main driving shaft, and separate secondary shafts
having clutch connection with the main driving shaft for operating the feed
rollers in front and in rear of the edging device, said parts being combined and
arranged in order, substantially as described.
Tenth. A tinning plant consisting of cleansing, edging, coating burnishing and
rolling devices, feed rollers, a main driving shaft, and mechanism connected with
said cleansing, edging and burnishing devices for operating the same, and secondary
shafts for operating the sets of rollers in advance and in rear of the edging device,
and separate clutch mechanisms for connecting each of said secondary shafts with
said driving shaft, said parts being combined and arranged in order, substantially as
and for the purpose set forth.
Eleventh. An edging machine for sheet metal having separate folders, toggle
levers connected therewith, rotary shafts with cams for operating said levers, a
main driving shaft, mechanism substantially as described for separately connecting
said rotary shafts with the main driving shaft, a separate set of rollers for each
folder, and a guide leading from one folder to the other, one set of rollers being
on one side of one folder, and the other set on the opposite side of the other folder,
said parts being combined, substantially as described.
Twelfth. In an edging machine for sheet metal, a frame, two sets of folders and
clamps, feed rollers on opposite sides having separate operating mechanisms sub-
stantially as described connected by a main driving shaft, one of said rollers being
operated in advance of the operation of the other roller, said parts being combined
substantially as described.
Thirteenth. In an edging machine for sheet metal, a frame with guides, folders
and clamps movable in said guides, stationary bed plates, a main driving shaft,
secondary shafts, feed rollers on opposite sides of the machine with operating
mechanism therefor, the mechanism of the feed rollers on one side operating in
advance of the operation of the mechanism of the feed rollers on the other side
said parts being combined substantially as described.
Fourteenth. In an edging machine for sheet metal, a frame with two folders
moving therein, feed rollers with operating mechanism substantially as described
either for stopping said rollers simultaneously or operating one in advance of the
operation of the other, said parts being combined substantially as described.
Fifteenth. In an edging machine for sheet metal, a frame, two separate folders,
bed plates, on said frame operating mechanism for said folders, two sets of rollers,
one for feeding the plate of metal to one folder, and the other for guiding the
plate from the other folder, a guide leading from one folder to the other, and
mechanism substantially as described for operating one set of said rollers in advance
of the other and also for stopping them simultaneously, said parts being combined
substantially as described.
Sixteenth. In an edging machine for sheet metal, a frame two separate folders,
bed plates, operating mechanism for said folders, separate sets of rollers for carrying
the sheet metal to and from the machine, operating mechanism for said rollers
adapted to rotate one set in advance of the other, and a guide for the metal plate
leading from one folder to the other, said parts being combined substantially as
described.
Seventeenth. A cleansing device for sheet metal plates having a box with slotted
opposite sides, feed rollers adjacent to said slots, a pair of rotary brushes between
said slotted sides and on the same side of the path of travel of a sheet passing
through said box, and mechanism for rotating at the same time one of the said
brushes in an opposite direction from the other, said parts being combined
substantially as described.
Eighteenth. An apparatus for cleansing sheet metal having a scrubbing device
consisting of boxes with chutes leading therein and having slots in their sides, two
sets of rotary brushes, a set thereof being on each of the opposite sides of the path
of travel of the material to be cleansed, and mechanism for operating the brushes

page_text: of either pair in opposite directions, said parts being combined substannany
described.
Nineteenth. An apparatus for cleansing sheet metal having a box with slots in
its sides provided with diagonally arranged pipes having slots therein and located
on both sides of the path of travel of the sheet, guides in said box, and a feed roller &
on the outer side of said box, said parts being combined substantially as described.
Twentieth. In an apparatus for cleansing sheet metal a box with slotted sides,
slotted pipes in said box above and below the plane of said slots in the sides, and
depending guides having leather ends, said parts being combined substantially as
described.
Twenty-first. An apparatus for cleansing sheet metal plates having a drying
roller with a surrounding steam jacket provided with a manganese coating thereon,
substantially as described.
Twenty-second. An apparatus for cleansing sheet metal plates having a drying
roller with a felt covering, and a surrounding steam jacket, said parts being combined
substantially as described.
Twenty-third. An apparatus for cleansing sheet metal plates having rotary
brushes, and perforated guides adjacent to said brushes and between which the said
plates are adapted to pass, said parts being combined substantially as described.
Twenty-fourth. An apparatus for cleansing sheet metal plates having a scouring
device with one set of rotary brushes on one side of the path of travel of said plates,
another set of rotary brushes on the opposite side of the path of travel of said
plates, and guides respectively above and below said sets of brushes, one of said
guides being perforated, said parts being combined substantially as described.
Twenty-fifth. An apparatus for coating sheet metal plates having a dipping pot
and a supply pot, the latter with a duct near its base leading into the upper part
of one limb of the dipping pot, and separate furnaces for said pots, the side of the
said limb of the dipping pot forming a portion of the wall of the combustion
chamber of the supply pot, whereby one side of the said dipping pot is adapted to
receive more heat than the other side, said parts being combined substantially as
described.
Twenty-sixth. An apparatus for coating sheet metal plates having a melting pot,
a supply pot, and a dipping pot with entrance and exit limbs, said melting pot
leading from near its base into the supply pot, and said supply pot leading from
near its base into the upper part of the dipping pot, a furnace for the dipping pot,
and a single furnace for said melting and supply pots, said parts being combined
substantially as described.
Twenty-seventh. An apparatus for coating sheet metals having a melting pot, a
supply pot, a duct leading from said melting to said supply pot, a single furnace for
said melting and supply pots, a dipping pot with entrance and exit limbs, a duct
leading from near the base of the supply pot to the upper part of the dipping pot, a
flux box on the supply pot and communicating with the dipping pot, and a separate
furnace for the dipping pot, said dipping pot having one of its walls forming part of
the wall of the fire chamber of the supply pot furnace, said parts being combined
substantially as described.
Twenty-eighth. An apparatus for coating sheet metals having a melting pot and
a communicating supply pot, a furnace for said pots, a dipping pot with a duct
leading into the upper part thereof from the lower part of the supply pot, a separate
furnace for the dipping pot, and a supporting leg for the dipping pot provided with
an opening affording communication between the fire chamber of the two furnaces,
said parts being combined substantially as described.
Twenty-ninth. An apparatus for coating sheet metal having communicating
melting and supply pots with a single furnace and provided with a supporting leg
having an opening affording communication between the fire chambers of the two
furnaces, said parts being combined substantially as described.
Thirtieth. An apparatus for coating sheet metal having a supply pot with a

page_text: furnace, a dipping pot communicating with said supply pot and having a separate
furnace, a supporting leg for said dipping pot having an opening affording com-
munication between the fire chambers of said furnaces, a flux box on said supply
pot communicating with said dipping pot, and rollers and guides in said flux box
and dipping pot, said parts being combined substantially as described.
Thirty-first. In an apparatus for coating sheet metals, a twin dipping pot of
U-shape having a furnace and a separate air chamber beneath the same, a damper
in a side or inner supporting wall of the pot controlling the admission of the
products of combustion to said chamber, and means substantially as described for
cooling the limb of the dipping pot below which the said air chamber is situated,
said parts being combined substantially as described.
Thirty-second. A dipping pot of U-shape having entrance and exit limbs,
adjustable rollers in said pot, guides between said rollers having perforated base
portions with side pieces said guides being secured to the side walls of the dipping
pot, said parts being combined substantially as described.
Thirty-third. In an apparatus for coating sheet metal plates, a dipping pot
having feed rollers therein one of each pair of said rollers having stationary journal
bearings, rods in which the other roller of each pair has bearings, and tubes
connected with the walls of the pot and in which the rods are adjustable, said parts
being combined substantially as described.
Thirty-fourth. The herein described method of coating sheet metal consisting in
first coating the contact faces of connected ends of sheet metal plates with a fusible
powder and then passing the sheet thus formed through a dipping pot, substantially
as described.
Thirty-fifth. The herein described method of cleansing and coating sheet metal
consisting in first scouring the plates of sheet metal, then coating with a fusible
powder one of the faces of adjacent ends of the plates, then connecting said ends
and finally passing the sheet thus formed through a dipping pot, substantially as
described.
Thirty-sixth. The method of coating sheet metal with tin and alloys thereof
consisting in scouring the plates, then uniting the adjacent ends and passing the
continuous sheet thus formed through a dipping pot, the contact faces of the joined
ends being first coated with a fusible powder, substantially as described.
Thirty-seventh. The method of coating sheet metal with tin or alloys thereof
consisting in scouring the plates, then drying the same, then connecting the adjacent
edges of successive plates so as to form a continuous sheet, and then passing the
said sheet through a dipping pot, substantially as described.
Thirty-eighth. The method of coating sheet metal with tin or alloys thereof
consisting in scouring the plates and drying the same, then connecting the adjacent
edges of successive plates so as to form a continuous sheet, and then passing the
said sheet through a dipping pot and between squeezing rollers without turning the
same, substantially as described.
Thirty-ninth. The method of coating sheet metal plates, consisting in coating
with a fusible powder the contact faces of adjacent edges of successive plates,
connecting said plates, passing the same into a dipping pot without turning them,
then rolling them into bundles, substantially as described.
Fortieth. In a plant for coating sheet metal, a reeling device consisting of a
pivoted table, a shaft with cam on which said table rests, and rotary drums adapted
to receive the sheet of metal from the table, said parts being combined substantially
as described.
T
7
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.