Improvements in the Art or Process of Manufacturing Tin or Terne Plate.
Year: 1894

page_text: Date of Application, 5th Feb., 1894-Accepted, 24th Mar., 1894
COMPLETE SPECIFICATION.
Improvements in the Art or Process of Manufacturing Tin or
Terne Plate.
I, EDWIN NORTON of Maywood, in the County of Cook, in the State of Illinois,
United States of America, 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 :-
My invention relates to improvements in the art or process of manufacturing tin
or terne plate.
Heretofore the method or process of manufacturing tin or terne plate has been
to first hot roll the sheets of iron or steel to the required thickness or gauge;
second, pickle the sheets to remove the oxide or scale; third, wash them; fourth,
pack the sheets in air tight boxes and anneal them; fifth, cold roll the sheets three
or four times; sixth, pack the sheets again in air tight boxes and anneal them;
seventh, pickle the sheets preparatory to tinning; eighth, wash them; uinth, flux
the sheets, and tenth and finally tin them; all these steps or operations being
considered necessary to produce the finished tin plate of sufficient softness and
ductility, homogeneity and density or solidity of structure to enable it to be drawn,
folded and otherwise manipulated as required in the manufacture of tin cans for food
and other products, and other articles customarily made from tin plate or terne
plate. Owing to the great number of different steps or operations involved in this
old process, the manufacture is attended with considerable labor and expense, and
necessarily involves considerable time.
Surprising as it may seem to those skilled in the art, I have discovered and
demonstrated by a large number of experiments or tests in which the tin plate
and terne plate sheets made by my new process have been subjected to deep and
repeated drawings, close sharp folding, seaming, crimping, beading and soldering,
and other manipulations to which tin plate or terne plate is customarily subjected
in the manufacture of tin cans or vessels and various other articles, that a successful,
practical and perfect tin plate or terne plate, sufficiently soft and ductile, homogeneous
and dense or solid to answer all the requirements of drawing, bending, folding,
soldering and other manipulations necessary in the manufacture of tin cans or
vessels and other customary articles, may be successfully and practically made by
first hot rolling steel sheets to the required thickness or gauge; second, pickling
the sheets preparatory to tinning; third, washing the sheets; fourth, fluxing the
same, and fifth and finally tinning the sheets, that is to say coating them with tin,
bead or other soft metal. By this new method I produce a perfect tin plate or
terne plate equal to or better in quality than that heretofore produced by the old
method and answering equally well for the manufacture of tin cans for use in
putting up hermetically sealed food and other products, and for a great variety of
other uses. By my new process the manufacture is at the same time greatly
cheapened as a number of steps requiring a great deal of time, labour, fuel and
expense are entirely omitted.
In practising my new process the hot rolling of the steel sheets may be done in
the manner now usually employed in the old process, and the pickling of the sheets
preparatory to tinning, the washing of the white pickled sheets, the fluxing of the
same and the tinning of the sheets may each and all be performed in the manner
now customarily used in the old process or in any suitable way known to those
skilled in the art.
In making terne plates by my new process, the sheets after being fluxed are
coated with lead instead of tin, and by use of the term "tinning" in the claims I

page_text: wish to be understood as meaning the coating of the fluxed sheets either with tin
or other soft metal.
In the accompanying drawing, forming a part of this Specification, I have shown
at Fig. 1 a plan view of a sheet of tin plate made according to this invention, and
at Fig. 2 a section of the same much exaggerated in thickness.
In said drawing A represents the soft, ductile, hot rolled sheet of steel;
a a indicate the hot rolled surfaces of the sheet after the same have been pickled to
remove the scale or oxide preparatory to tinning, and a¹ a¹ the coating of tin or
other soft metal applied directly to the hot rolled, pickled surfaces of the soft,
ductile steel sheet.
The new product produced by my process differs in appearance from the ordinary
tin plate produced by the old process in having a peculiar silvery. lustre and
somewhat "mat" like surface due to the fact that the tin coating is applied
directly to the hot rolled surface of the steel sheet. This difference in appearance
however is in no way objectionable. My new product I have also found by
repeated tests to be much stronger, tougher, softer and more ductile than the old
plate made from cold rolled sheets, and is much better adapted for deep drawing
and other manipulations requiring great strength and ductility in the metal.
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:
1st. The improvement in the art or process of manufacturing tin or terne plate,
consisting in first hot rolling sheets of steel to the required thickness or gauge, and
then pickling, washing, fluxing and tinning the sheets without annealing or cold
rolling the same, substantially as specified.
2nd. The improvement in the art or process of manufacturing tin or terne plate,
consisting in hot rolling sheets of steel to the required thickness or gauge, and then
without annealing the sheets pickling, washing, fluxing and tinning the same, sub-
stantially as specified.
3rd. The process or improvement in the art of manufacturing tin or terne plate,
consisting in first hot rolling sheets of steel to the required thickness or gauge, and
then without cold rolling the sheets, pickling, washing, fluxing and tinning the
sheets, substantially as specified.
4th. The product of the herein described process, consisting in a soft ductile
sheet of steel having pickled, hot rolled surfaces coated with tin or other soft metal,
substantially as and for the purpose specified.
5th. The product of the herein described process, consisting in a soft, ductile,
tinned unannealed sheet of steel, the tin being applied directly to the hot rolled
surface of the steel sheet after pickling the same, substantially as specified.
6th. The product of the herein described process consisting in a hot rolled,
unannealed sheet of soft, ductile steel coated with tin or other soft metal, sub-
stantially as specified.
Даљей LAIS Z410 19V OT Lana V 1894.
■DALGO MAIN 241 019V OL January 1894.
EDWIN NORTON.
Haseltine, Lake & Co.,
45, Southampton Buildings, London, Agents for the Applicant.