IMPROVEMENTS IN MACHINERY FOR COATING METALLIC SHEETS OR PLATES WITH OTHER METALS OR ALLOYS
Year: 1886

page_text: Date of Application, 24th Nov., 1886
Complete Left, 24th Aug., 1887
Complete Accepted, 7th Oct., 1887.
with other Metals or Alloys.
We HERBERT AKROYD STUART of Bletchley Iron Works in the County of Bucks
Mechanical Engineer and CHARLES RICHARD BINNEY of 5 Hackney Road in the
County of Middlesex Consulting Engineer do hereby declare the nature of the said
invention for IMPROVEMENTS IN MACHINERY FOR COATING METALLIC SHEETS OR
PLATES WITH OTHER METALS OR ALLOYS, to be as follows:-
The object of this Invention is to improve the means by which metallic plates of
any size may be coated with Tin or Terne metal, or alloy; and by which means a
great saving is effected both in time, labour and materials.
purpose
of
In carrying out the said invention a bath or pot is constructed for the
containing the coating metal or alloy and hereinafter called the "Metal-pot."
This "Metal-pot" is also made to receive at one end a separate pot for containing
the "Coating-Grease; "and at the other end another separate pot for containing the
"finishing-grease.'
"
'
By constructing the grease pots separate from the metal pot a ready means is
provided of forming hot-air-chambers between the walls of the metal pot and those of
the grease-pots, for the purpose of heating the grease contained in the said grease pots
to their proper respective working temperatures.
In connection with the said hot-air-chambers suitable openings are provided fitted
with doors or valves for the joint purpose of quickly cooling the said pots and contents
when necessary, and providing a means to scruff or clean the coating metal when
desired or for any other purpose found requisite. These grease-pots have each a
suitably constructed portion attached thereto, so as to provide a long narrow box or
chamber, which penetrates some distance under the surface of the coating metal and
is only large enough to allow one plate to pass through at a time; the chief objects
being to divide the plates from the scruff and other impurities floating on the main
surface of the metal in the bath, during their transit through the said metal and also
to make the surface contact between the grease and metal as small as possible thereby
both making a large saving of grease and preventing the temperature of the grease
being much affected by that of the metal,

page_text: The metal pot is constructed with a loose top, crown or cover so that when
necessary it can easily be removed and thus a clear access is provided to scruff and
clean the whole body of the coating metal when desired and at the same time facilities
are given for examining the guides and their mechanism.
In further carrying out this Invention motion is given by the main shaft to bevel
wheels and worms and worm wheels whence it is conveyed to the feed arrangements
on the one side and to the finishing rolls and brushing and scraping mechanism on
the other.
The plates are fed crosswise through specially constructed conical feed rolls which
propel them into the coating grease or flux pot and then into the metal bath.
Each alternate plate is fed into the conical rolls at the opposite angular direction to
the plate preceding it, which it thus propells at the point of intersection through
guides (hereinafter described) arranged longitudinally in the metal pot.
The object of these guides is to maintain the plates in the same angular position as
they leave the feeding rolls, while they pass from the Feed rolls to the finishing rolls.
In connection with these guides is arranged mechanism capable of imparting a
lateral movement to them when required to work various sized plates, say for example
any size from fourteen inches to thirty inches wide.
By this arrangement it will be seen that one machine will be sufficient to make
various sizes of plates.
The plates are, as described, propelled through the molten metal till they reach the
finishing grease pot wherein are arranged the finishing rolls and brushing and
scraping mechanism. The said rolls receive their motion as above stated from worins
and worm wheels from the main driving shaft instead of Spur Gearing as heretofore.
This produces a steadier motion of the finishing rolls and consequently a better
surface to the plates.
As the plates issue from the molten metal into the finishing grease-pot they are
caught by the first pair of finishing rolls and then pushed or drawn through brushes
and scrapers made entirely or partly of asbestos or of a combination of suitable
materials.
These brushes are so arranged as to receive a short rapid lateral motion given them
by the camm motion cut on a portion of the periphery of the finishing rolls.
The object of adding a reciprocating motion to these brushes or scrapers is to more
effectively remove the scruff or other impurities from the surface of the plates, and at
the same time to regulate the quantity of metal required to be put on each plate.
For the purpose of heating the metal and grease to their proper working tempera-
tures, suitable furnaces are constructed so that the air required for combustion is
admitted from both ends of the ashpit instead of from only one end as heretofore.
By this means more perfect combustion is produced and a better arrangement
given to the flues by which the heat is more equally distributed over the heating
surface of the pot and a considerable saving of fuel is obtained.
Dated this 24th day of November 1886.

page_text: with other Metals or Alloys.
We HERBERT AKROYD STUART of Bletchley Iron Works in the County of Bucks,
Mechanical Engineer and CHARLES RICHARD BINNEY of 5 Hackney Road in the
County of Middlesex, Consulting Engineer, 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 :-
The object of this Invention is to improve the means by which Metallic Plates of
any size may be coated with Tin or Terne metal or alloy, and by which means a great
saving is effected in time, labour, and materials. In carrying out the said invention
a bath or pot, hereinafter called the "Metal Pot" is constructed for the purpose of
containing the coating metal or alloy. This metal pot is also made to receive at one
end a separate pot for containing the "Coating Grease," and at the other end another
separate pot for containing the "Finishing Grease."
.
By constructing the grease pots separate from the metal pot a ready means is
provided of forming hot-air-chambers between the walls of the metal pot and those of
the grease pots for the purpose of heating the grease contained in the said grease pots
to their proper respective working temperatures.
In connection with the said hot-air-chambers, suitable openings are provided fitted
with doors or valves for the joint purpose of quickly cooling the said pots and contents
when necessary, and providing a means to scruff or clean the coating metal when
desired, or for any other purpose found requisite. These grease pots have each a
suitably constructed portion attached thereto, so as to provide a long narrow box or
chamber which penetrates some distance under the surface of the coating metal, and
is only large enough to allow one plate to pass through at a time; the chief objects
being to divide the plates from the scruff and other impurities floating on the main
surface of the metal in the coating bath during their transit through the said metal,
and also to make the surface contact between the grease and metal as small as possible,
thereby both making a large saving of grease and preventing the temperature of the
grease being much affected by that of the metal.
The metal pot is constructed with a loose top-crown-or cover-so that when
necessary it can easily be removed and thus a clear access is provided to scruff and
clean the whole body of the coating metal when desired and at the same time facilities
are given for examining the guides and their mechanism.
In further carrying out this Invention, motion is given by the main shaft to
bevelled wheels and worms and worm wheels whence it is conveyed to the feed
arrangements on the one side and to the finishing rolls and brushing and scraping
mechanism on the other.
The plates are fed crosswise through specially constructed conical feed rolls which
propel them into the coating grease or flux pot and then into the metal bath. Each

page_text: alternate plate is fed into the conical rolls at the opposite angular direction to the
plate preceding it, which it thus propels at the point of intersection through guides-
hereinafter described-arranged longitudinally in the metal pot. The object of these
guides is to maintain the plates in the same angular position as they leave the feeding
rolls whilst they pass from the feed rolls to the finishing rolls. In connection with
the guides is arranged mechanism capable of imparting a lateral movement to them
when required to work various sized plates, say, for example, any size from
fourteen inches to thirty inches wide. By this arrangement it will be seen that one
machine will be sufficient to make various sizes of plates. The plates are, as
described, propelled through the molten metal till they reach the finishing grease pot
wherein are arranged the finishing rolls and brushing and scraping mechanism. The
said rolls receive their motion as above stated from worms and worm wheels from the
main driving shaft instead of spur gearing as heretofore. This produces a steadier
motion of the finishing rolls and consequently a better surface to the plates. As the
plates issue from the molten metal into the finishing grease pot they are caught by
the first pair of finishing rolls and then pushed or drawn through brushes and scrapers
made entirely or partly of asbestos or of a combination of suitable materials. These
brushes are so arranged as to receive a short rapid lateral motion given them by the
cam cut on a portion of the periphery of the finishing rolls. The object of adding a
reciprocating motion to these brushes or scrapers is to more effectively remove the
scruff or other impurities from the surface of the plates and at the same time to
regulate the quantity of metal required to be put on each plate.
For the purpose of heating the metal and greaso to their proper working
temperature suitable furnaces are constructed so that the air required for combustion
is admitted from both ends of the ash pit instead of from only one as heretofore. By
this means more perfect combustion is produced and a better arrangement given to
the flues by which the heat is more equally distributed over the heating surface of the
pot and a considerable saving of fuel is obtained.
In order that this invention may be more fully understood annexed hereto are two
sheets of drawings wherein similar letters refer to similar parts in all Figures.
Fig. 1. is a longitudinal section of a complete machine with elevation of gearing
shaft and pulleys and
Fig. 2. Sheet 2. is plan of same with the crown or cover J removed. Referring
now separately to the respective parts in the respective Figures.
A is the metal bath. B the preparing Grease or Flux bath and C. the finishing
Grease Bath. D and E. are respectively the projections on, or continuations of, the
Grease baths, and are employed to produce as small a contact as practicable between
the Grease and the Metal.
F. F. and G. G. are hot-air-chambers and are used to regulate the heat of the grease
in each grease bath, to its working temperature. H. is a hinged door by which
means the metal may be scruffed.
J is the loose crown or top and when necessary may be lifted so that free access is
given to fully scruff the metal, and also to inspect the Guides.
K. K. K. are the conical feed rolls, into which the plates are alternately fed as
shewn by the dotted lines.
N. N. and L. L. are pedestals to support the said rolls.
M. M. are the longitudinal slotted-guides and the mechanism for regulating the
width of the said guides to suit various sizes of plates consists of the brackets O.0,
the shaft P. the bevel wheels QQ, and the spindle and hand-wheel R.
The said brackets are secured to the guides M. M. and are threaded to receive each
one end of the shaft P. The said shaft has cut on it at one end a right handed
thread and at the other end a left-handed thread and it also carries one of the bevil
wheels Q. into which is geared the other bevil wheel Q' attached to the spindle and
hand-wheel R. By turning the said wheel in one direction the guides are pushed
apart and by reversing the motion they are brought closer together.
S. is the machine frame and fits into the guide strips T. T. cast on the finishing
grease-pot, which strips keep the frame steady without the aid of bolts.

page_text: V. V. are the brushes and scrapers which are secured to the machine frame but
capable of being moved laterally by the studs and rollers W. W. The rollers are
attached to one or more studs or pins fixed to the brushes and scrapers and the said
rollers fit into cams cut on the finishing rolls the configuration of the cams being such
that the finishing rolls in rotating produce the desired lateral and reciprocating
motion in the brushes and scrapers.
The necessary pressure or weight is put upon the brushes and scrapers by the rods
and nuts Z. Z. acting through bell cranks Y. Y. hinged or swivelled from the finishing
rolls and upon the finishing rolls in like manner through bell cranks hinged from the
brushes.
A' is the spindle having the worms B' formed thereon which gear into suitable
pinions attached to the rolls X. X. C₁is the main driving shaft supported by the
pedestals D¹ and L. EE¹ are the flues, and F1 F1 the fire doors. "G'G' are the
air inlets for the necessary supply of air for combustion, and H³ are valves to let off
the hot air when the grease becomes too hot.
Having now particularly described the nature of this invention and the manner in
which the same may be performed we wish it to be understood that we claim as novel
and original the following: viz. :-
1st. The construction of the grease or Flux baths in metal coating machinery
separate from the metal bath in order to provide hot air-chambers for the reasons
given and substantially as herein described and set forth.
2nd. The construction or arrangement of one or more suitable projections or
continuations in connection with the grease baths for the purposes and substantially
as herein described and set forth.
3rd. Giving the brushing or scraping mechanism a lateral motion for the purposes
and substantially as herein described and set forth.
4th. Driving the feeding and finishing rolls with worm gearing, substantially as
herein described and set forth.
5th. The arrangement and combination of the flues so that the air for combustion
may enter from both ends of the ashpit, substantially as herein described and
set forth.
6th. The combination and general arrangement of the various parts of the said
metal coating machinery for the purposes, and substantially as herein described and
set forth.
Dated this 92nd day of Anomat 1887