IMPROVEMENTS IN ROLLING CYLINDERS OF IRON OR STEEL AND IN APPARATUS TO BE USED FOR THIS PURPOSE
Year: 1882

page_text: LETTERS PATENT to Benjamin Walker of Leeds in the County of York for
an Invention of IMPROVEMENTS IN ROLLING CYLINDERS OF IRON OR STEEL
AND IN APPARATUS TO BE USED FOR THIS PURPOSE
(Void by reason of the Patentee having neglected to file a Specification in
pursuance of the conditions of the Letters Patent.)
PROVISIONAL SPECIFICATION left by the said Benjamin Walker at the
Office of the Commissioners of Patents on the 30th October 1882.
BENJAMIN WALKER of Leeds in the County of York.
"IMPROVEMENTS IN
ROLLING CYLINDERS OF IRON OR STEEL AND IN APPARATUS TO BE USED FOR THIS
PURPOSE
"
At the present time cylinders without weld are commonly rolled from hollow
ingots or cylinders of steel or iron-the hollow ingots or cylinders being enlarged
in diameter by the action of a pair of rolls upon them one on the inside the other
on the outside.
If however the metal is required to be worked or extended in a direction
lengthwise of the cylinder this has been effected by extending the ingot by
hammering previous to extending it circumferentially by rolling.
The extending of the ingot by hammering is not only a slow operation but also
requires skilled workmen to perform it.
According to this Invention I manufacture welded cylinders of iron or steel of
comparatively large diameter with the metal worked or extended lengthwise of
the cylinder by a rolling operation as well as being worked or extended
circumferentially by another rolling operation.
To effect the elongating of the ingot or cylinder by a rolling operation I mount
the ingot or cylinder upon a mandril or bar carried by a carriage which is provided
with wheels to run on rails or guide ways.
These rails are below and at right angles to a roll carried in bearings so as to be
just above the mandril.

page_text: The driving mechanism of the roll is arranged so that it can readily be turned
either way.
The carriage with the cylinder upon the mandril is pushed forward until the
cylinder is gripped between the roll and the mandril-the roll is then revolved and
acting upon the cylinder draws the carriage forwards until the roll has acted upon
the entire length of that portion of the cylinder which is above the mandril.
The roll is then stopped and a partial turn is given to the cylinder so as to bring
another portion of it uppermost preferably this is effected by giving a partial
turn to the mandril.
The carriage is then pushed in the opposite direction until the cylinder is again
gripped between the roll and mandril--the roll is then again revolved in the
opposite direction and the same operation is repeated until the whole circumference
of the cylinder has been acted upon by the roll.
When the ingot or cylinder has in the above manner been brought to the
required length it may be extended circumferentially by means of a pair of rolls in
the ordinary manner.
In this way the cogging of the cylinder may be effected by rolls extending it
lengthwise and the finishing be effected by rolls extending it circumferentially.
The moving of the carriage in either direction to bring it up to the roll may be
effected by means of a hydraulic cylinder so that the workman to move the
carriage would only have to shift a valve. The turning of the cylinder after each
passage below the roll might likewise be effected by hydraulic gear..