Improvements in Machines for Rolling Metal
Year: 1898

page_text: Date of Application, 1st Jan., 1898-Accepted, 5th Feb., 1898
.Improvements in Machines for Rolling Metal.
A communication from abroad by JOHN BYRNES ALEXANDER, of Cleveland, Ohio,
in the United States of America.
I, REGINALD WILLIAM JAMES, of the Firm of Fell and James, of 1, Queen
Victoria Street, London, E.C., Chartered Patent Agent, 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 invention relates to the rolling of flats, such as are used in strips for pipes,
in tin-plate etc., and it is designed to provide an improved series of passes in
the rolls for this purpose, whereby the reduction can be made more quickly and
easily than with the passes formerly employed.
In the drawing, in which the figure is a diagrammatic view showing rolls pro-
vided with the improved set of passes for rolling flats from blooms or billets,
A, B, C, D and E represent the successive passes within which the metal is
rolled. The dotted figure at the first pass represents a substantially square
or rectangular bloom or billet, which in this first pass is formed into
an N, Z or S shape, a pair of grooves being formed longitudinally in
the opposite faces of the metal. The passes B, C and D spread the metal still
further laterally and lessen its thickness, and the pass E forms the flat sheet or
plate.
The operation of rolling is the same as usual, the metal being passed suc-
cessively through the five passes, which form the flat sheet from the square
billet.
The advantages of the invention result from the forming of the upper and
lower longitudinal grooves in the metal in the first pass and the general Z, S or N
shape of the intermediate passes.
The number of passes may be varied according to the size of the bars required,
the angles may be sharp or rounded, the upper and lower grooves of the first
pass may be in vertical registry and many other variations will suggest them-
selves to the skilled mechanic without departure from the invention.
Having now particularly described and ascertained the nature of this said
invention and in what manner the same is to be performed, I declare that what
I claim is:-
1. In apparatus for rolling flat sheets or bars, rolls having several passes and
in which each of two adjoining rolls in the first pass is provided with a single
annular projection arranged to form a longitudinal groove in the metal and
succeeding passes having circumferential projections arranged to give an approxi-
mately Z, S or N shape to the metal.
2. In apparatus for rolling flat sheets or bars, a set of rolls in which the first
pass is arranged with annular projections to form a single upper and lower
longitudinal groove in the metal, intermediate passes of approximately Z, S or N
shape, and a final pass arranged to flatten the Z, S or N shape.

page_text: 3. In apparatus for rolling flat sheets or bars, rolls having at the first pass
annular projections arranged to form.non-registering single upper and lower
longitudinal grooves in the metal, .intermediate passes of Z, N or S shape, each
successively flatter than the preceding one, and a flat pass arranged to flatten the
metal into a sheet or bar.
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