Improvements in Apparatus or Machinery used in Coating Metal Sheets with Metals or Alloys.
Year: 1889

page_text: Date of Application, 2nd May, 1889
Complete Specification Left, 14th Dec., 1889-Accepted, 18th Jan., 1890
PROVISIONAL SPECIFICATION.
Improvements in Apparatus or Machinery used in Coating Metal
Sheets with Metals or Alloys.
I, RICHARD HEATHFIELD of Darlaston in the County of Stafford Manufacturer do
hereby declare the nature of my said invention to be as follows:-
My invention has for its object improvements in apparatus or machinery used for
coating metal sheets with metals, and alloys and is an advance upon my previous
Patent No. 2243 of January 9th A D. 1877 as the metal sheets while being coated are
not bent to so short an angle and there is less strain upon the metal. I have also
found in practice that the wear and tear on the "ordinary rolls" is very great but
they have hitherto been necessary when working in accordance with my Patent
No. 2243 as a means of conducting the sheet to the additional and partly immersed
rolls which formed the subject of my former patent.
By my present invention I am enabled to dispense with the ordinary rolls which are
wholly immerse in metal and to substitute for them a pair of rolls (which I call
feeding rolls upon the exterior or margin of the pots containing the coating metal or
alloy thus avoiding much wear and tear I place the rolls which I have hitherto used
horizontally upon the exit side of the pot in a diagonal position so that while the nip
of the rolls is still a short distance above or below the surface of the coating metal the
lower roll is much more fully immersed than hitherto while the upper roll is not nearly
immersed to the extent that had heretofore been necessary.
By this means I avoid the sharp bend given to the sheet in passing from the
"ordinary rolls" hitherto used by the additional rolls which form the subject of my
patent No. 2243 and am able to dispense with the ordinary or submerged rolls
altogether and to substitute for thom a pair of feeding rolls which 1 place by preference
in a diagonal position upon the inlet edge of the pot or at an angle opposite to that
of the rolls upon the exit edge and conduct the sheet therefrom by means of bent
guides through the flux box and through the coating metal to the partially immersed
rolls upon the exit side of the pot.
The rolls may be driven by any suitable class and arrangement of gearing which
will be well understood.
My invention is applicable to coating sheets of iron or steel with other metal or
alloys as I do not confine myself entirely to zinc & its alloy.
Dated this 1st vr of Mov. 1000
GEORGE BARKER,
77, Colmore Row, Birmingham, Agent for Applicant.
COMPLETE SPECIFICATION.
Improvements in Apparatus or Machinery used in Coating Metal
Sheets with Metals or Alloys.
I, RICHARD HEATHFIELD of Darlaston in the county of Stafford Manufacturer, do
hereby declare, the nature of my said 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 has for its object, improvements in apparatus or machinery used for.
coating metal sheets with metal & alloys and is an advance upon my previous Patent,
No. 2243 of January 9th A.D. 1877 as the metal sheets while being coated are not
bent to so short an angle and there is less strain upon the metal. I have also found in
practice that the wear and tear on the "ordinary rolls" is very great but they have
hitherto been necessary when working in accordance with my Patent No. 2243 as a
Pain Q21

page_text: means of conducting the sheets to the additional and partly immersed rolls which
formed the subject of my former Patent.
By my present invention I am enabled to dispense with the ordinary rolls which are
immersed in metal, and to substitute for them a pair of rolls (which I call feeding
rolls) upon the exterior or margin of the pots containing the coating metal or alloy
thus avoiding much wear and tear. I place the rolls which I have hitherto used
horizontally upon the exit side of the pot in a diagonal position so that while the nip
of the rolls is still a short distance above or below the surface of the coating metal, the
lower roll is much more fully immersed than hitherto; while the upper roll is not
nearly immersed to the extent that had heretofore been necessary.
By this means I avoid the sharp bend given to the sheet in passing from the
"ordinary rolls" hitherto used by the additional rolls which form the subject of my
Patent No. 2243 and am able to dispense with the ordinary or submerged rolls
altogether and to substitute for them a pair of feeding rolls which I place by proference
in a diagonal position upon the inlet edge of the pot or at an angle opposite to that of
the rolls upon the exit edge and conduct the sheets therefrom by means of bent guides
through the flux box & through the coating metal to the partially immersed rolls upon
the exit side of the pot.
The rolls may be driven by any suitable class and arrangement of gearing, which
will be well understood.
My invention is applicable to coating sheets of iron or steel with other metal or
alloys as I do not confine myself entirely to zine and its alloys.
In order that my invention may be clearly understood & more easily carried into
practice, 1 have appended hereunto two double sized sheet of drawings upon which I
have fully illustrated my improvements but some variations may be made from the
drawings as a whole without greatly altering the effect.
Figure 1., is a longitudinal section through the centre of the pot Z having my
improved apparatus attached thereto.
Figure 2., is a plan of same.
In carrying my invention into effect I place the rolls A which in accordance with
my previous Patent I have hitherto used horizontally in a diagonal or inclined position
at the exit side of the pot Z so that while the nip of the rolls A is still at the surface
or a short distance above or below the surface d' of the coating metal D the lower
roll a' is much more fully immersed than hitherto while the upper roll a² is not nearly
immersed to the extent that had hitherto been necessary. These rolls A are mounted
in the inner removable frames B and B which are bolted by the bolts 2 or otherwise
fastened to the outer supporting frame E which may be cranked at E¹ so as to allow
for the gearing F and F of the rolls A. The two sides E of the supporting frame
are secured together by the tie rods e which may be placed in any convenient position
and similar tie rods may be used for connecting the removal frame B and B¹
together. This arrangement of the inner frame B allows of the rolls A being bodily
removed from the pot for repairing and other purposes but the rolls may be hung
direct in the outer frame E.
The
The rolls are boxed in on each side to protect them from the superfluous flux or
scum upon the pot by the divisions N & N¹ which are secured to the outer supporting
frame E by the bolts n² & n³ or may be secured in any other suitable manner.
gearing F and F to.these rolls is also boxed in by the divisions S and T which are
also secured to the supporting frame E by which means I get my partially immersed
rolls and gearing free from contact with superfluous flux leaving them only in
contiguity to flux or other matter which is in a suitable condition for the fiuishing
process.
Instead of the submerged rolls of my previous Patent No. 2243 I use the pair of
feeding rolls H which are mounted in any suitable bearings and supports E which I
place by preference in the inclined or diagonal position shown in Figure 1. at the
inlet edge of the pot and at an angle opposite to that of the rolls A upon the exit
edge z³.
To conduct the sheet X from the feeding rolls H to the rolls A. 1 provide the bent

page_text: top guides K and the bottom guides L those at the top having the supports ¹
and those at the bottom all of which are bolted to supporting frame E by the
bolts and so as to form a guide from the rolls H on the inlet edge of the pot Z
through the flux box M and coating metal D to the partially immersed rolls A on the
exit side of of the pot.
To assist in the easy repair of that portion of the guides passing through the flux
box M the ends and are separate from the main lengths of the guides K and L
and are bolted separately to the outer supporting frame E by means of the guide
supports and . It will thus be seen that both the top and bottom main guides K
and L can be removed separately as well as the ends and which will thus enable
the main portion of my arrangement of guides to be removed for repair without
materially disturbing the remainder.
I may provide separate frames to which the whole of the guide supports A¹.or l
would be fixed; the said separate frames being bolted by, say two bolts, to the outer
supporting frames E which would allow of both the top and bottom guides being
readily and compactly removed.
The action of galvanizing by means of my improvements is as follows :-
The sheet of iron X which is to be galvanized is passed by the workman into the
feed rolls Hand from thence it passes along the guides K and L through the coating
metal D into the partially immersed rolls A from whence it emerges as a finished
sheet. Either the rolls H or A may be driven by any suitable class or arrangement
of gearing which will be well understood, and I may vary the inclination of the feed
rolls H, even to a vertical line although I prefer the inclined position or with the feed
rolls considerably inclined I may reduce the inclination of the exit rolls very
considerably indeed until they are quite horizontal.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed 1 declare that what I
claim is :-
First. In apparatus for coating metal, the rolls A on the exit side of the pot whether
hung in an inner or outer frame and whether protected or not from the superfluous
flux in combination with the feed rolls H substantially as and for the purpose herein
set forth and shown upon the drawings.
.
Second. In apparatus for coating metal, the removable main guides K, L in
combination with the other parts of claim 1 substantially as and for the purpose herein
set forth and shown upon the drawings.
Dated this 12th day of December 1889.
GEORGE
BARKER,
77, Colmore Row, Birmingham, Agent for Applicant.