Improvements in Apparatus for Rolling Railway Tyres and the like.
Year: 1899

page_text: Date of Application, 25th Mar., 1899
Complete Specification Left, 21st Dec., 1899-Accepted, 27th Jan.,
1900
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Rolling Railway Tyres and the like.
We, HENRY SHARP, Engineer, and ISALAI BAGNALL, Tyre Roller, both of
Stocksbridge Works, Deepcar, near Sheffield, in the County of York, do hereby
declare the nature of this invention to be as follows:-
Railway tyres are usually made by first punching the bloom, then hammering
to enlarge the hole and lastly rolling between a pair of rolls one inside and the
other outside the hoop.
In some cases also the hammering has been omitted the first enlargement of
the hole being performed by a pair of roughing rolls.
According to this invention the roughing rolls and the finishing rolls are fixed
to the same shafts.
The punched bloom is put on the inside roughing roll resting on a flange
around its underside.
The rolls are then caused to approach each other and the bloom is rolled and
so partly formed and enlarged in diameter. The rolls are then separated and
the partly formed tyre being now of greater diameter than the flange of the
inside roughing roll drops past it onto the inside finishing roll. The rolls are
then caused to again approach each other and the rolling is completed.
Dated this 24th day of March 1899
Improvements in Apparatus for Rolling Railway Tyres and the like.
We, HENRY SHARP, Engineer, and ISAIAH BAGNALL, Tyre Roller, both of
Stocksbridge Works, Deepcar, near Sheffield, in the County of York, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed to be particularly described and ascertained in and by the following
statement:-
Railway tyres are usually made by first punching the bloom, then hammering
to enlarge the hole and lastly rolling between a pair of rolls one inside and the
other outside the hoop.
In some cases also the hammering has been omitted the first enlargement of
the hole being performed by a pair of roughing rolls.
Figure 1 is a side elevation and Figure 2 a plan of an ordinary rolling mill
modified according to this invention.

page_text: The roughing rolls a and b and the finishing rolls c and d are fixed to the
same shafts e and f.
The punched bloom is put on the inside roughing roll a resting on a flange a¹
around its underside.
The rolls are then caused to approach each other in the ordinary way such as
by admitting water into the hydraulic cylinder and the bloom is rolled and so
partly formed and enlarged in diameter. The rolls are then separated and the
partly formed tyre being now of greater diameter than the flange a¹ of the inside
roughing roll drops past it onto the inside finishing roll being supported by
the rollers hand projections on the table. The rolls are then caused to again
approach each other and the rolling is completed.
By this invention tyres can be rolled from the punched bloom in an ordinary
mill at a single heat.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is:—
1. A rolling mill in which the roughing and finishing rolls are on the same
shaft.
2. Apparatus for rolling railway tyres and the like substantially as described
and illustrated in the drawings.
Dated this 4th day of Deceinber 1899.
HENRY SHARP.
ISAIAH BAGNALL.