Improvements in Mills for Manufacturing Weldless Tyres for Wheels of Railway Carriages and other Vehioles.
Year: 1891

page_text: Date of Application, 27th Oct., 1881
Complete Specification Left, 22nd Dec., 1891-Accepted, 19th Mar., 1892
PROVISIONAL SPECIFICATION.
Improvements in Mills for Manufacturing Weldless Tyres for Wheels
of Railway Carriages and other Vehioles.
I GEORGE WILLIAM WILLFORD, of Don Bank House, Attercliffe, Engineer,
and JOHN RIMMER of 33 Baltic Road Attercliffe, near Sheffield, Manager both
in the County of York do hereby declare the nature of our said invention for
"IMPROVEMENTS IN MILLS FOR MANUFACTURING WELDLESS TYRES FOR
WHEELS OF RAILWAY CARRIAGES AND OTHER VEHICLES" to be as follows:-
This invention consists in the construction of improved machinery for rolling
hoops or tyres for wheels of railway carriages and other purposes.
The chief features are in being able to replace the inner and outer rolls which
are let into hollow shafts and secured by means of wedges, keys, screws, or by any
other suitable means, thus dispensing with labour in having to change the rolls as
is now the case in already existing rolling mills, thereby considerably cheapening
the machine, and also in keeping the tyre whilst being rolled in its vertical position
by means of small guide rolls working upon the said tyre by hydraulic rams having
regulating valves to give the required pressure on the outside of the tyre thereof,
also in the construction of a bottom bed or frame having as an additional advantage
a guide for steadying the outer end, which is dovetailed and couples the top and
bottom bed together, and further in the construction of the top bed to the hollow
shaft and inside roll, which hollow shaft and inside roll are regulated on a pedestal
by means of a screw to suit the breadth of tyre required.
The gearing is so constructed as to actuate upon both hollow shafts at the same
time by the application of power at one or both ends.
In the construction of this invention we cast two beds, one a fixture and the other
moveable, the fixed bed having two or more upright bearings or pedestals to
receive brasses for carrying the hollow shaft and inside roll. The moveable bed is
fitted in a similar manner having a loose shaft or the purpose of allowing it
together with the hollow shaft and outside roll to rise or fall when requirel, still
keeping the hollow shaft and outside roll in operation.
The moveable bed is mounted upon an hydraulic ram, the cylinder of which is
placed in a frame, the pressure therefrom bears the bed and hollow shaft and
outside roll to their respective positions, by the action of this process of rolling the
bloom is formed into a weldless hoop or tyre.
At each side and in the centre of the machine and attached to the fixed bed is a
hydraulic cylinder having a rain with small guide roll fitted thereto which rolls
work to and from the tyre for the purpose of bearing upon and keeping it in
position and shape whilst being rolled.
The rolls are driven by gearing and horizontal shafting, rolling the hoop or tyre
vertically instead of horizontally.
To produce a tyre the bloom is put on the inside roll, the moveable bed with
outside roll is then raised by the large hydraulic cylinder then the guide rolls are
brought to bear on the bloom, the pressure in the two small cylinders is shut off,
and to regulate the said pressure on the bloom the escape valves are regulated by
means of a sliding weight attached to them.
When the machine is put in motion the bloom to produce the tyre expands and
at the same time forces the small guide rolls back, but still keeping the tyre in a
vertical position whilst being rolled by means of two discs one on the end of each
hollow shaft.

page_text: The rolls are formed taper fitting into the hollow shafts and are secured thereto
by keys:
Dated thin 20th of
1001
WM.
MOGOWAN,
Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Mills for Manufacturing Weldless Tyres for Wheels
of Railway Carriages and other Vehicles.
We, GEORGE WILLIAM WILLFORD of Don Bank House, Attercliffe, Sheffield
in the County of York, Engineer, and JOHN RIMMER of Baltic Road, Manager,
Attercliffe, Sheffield in the County of York do hereby declare the nature of our
said invention for IMPROVEMENTS IN MILLS FOR MANUFACTURING WELDLESS
TYRES FOR WHEELS OF RAILWAY CARRIAGES AND OTHER VEHICLES and in
what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement :-
This invention consists in the construction of improved machinery for rolling
hoops or tyres for wheels of railway carriages and other purposes.
The chief features are in being able to replace the inner and outer rolls which
are let into hollow shafts and secured by means of wedges, keys, screws, or by any
other suitable means, thus dispensing with labour in having to change the rolls as
is now the case in already existing rolling mills, thereby considerably cheapening
the machine, and also in keeping the tyre whilst being rolled in its vertical position
by means of small guide rolls working upon the said tyre by hydraulic rams having
regulating valves to give the required pressure on the outside of the tyre thereof,
also in the construction of a bottom bed or frame having as an additional advantage
a guide for steadying the outer end, which is dovetailed and couples the top and
bottem bed together, and further in the construction of the top bed to the hollow
shaft and inside roll, which hollow shaft and inside roll are regulated on a pedestal
by means of a screw to suit the breadth of tyre required.
The gearing is so constructed as to actuate upon both hollow shafts at the same
time by the application of power at one or both ends.
In the construction of this invention we cast two beds, one a fixture and the other
moveable, the fixed bed having two or more upright bearings or pedestals to receive
brasses for carrying the hollow shaft and inside roll. The moveable bed is fitted
in a similar manner, having a loose shaft for the purpose of allowing it together
with the hollow shaft and outside roll to rise or fall when required, still keeping
the hollow shaft and outside roll in operation. The inside roll can be made to rise
and fall in the same manner as the outside roll which may be found a convenience
in many cases.
The moveable bed is mounted upon an hydraulic ram, the cylinder of which is
placed in a frame, the pressure therefrom bears the bed and hollow shaft and
outside roll to their respective positions, by the action of this process of rolling the
bloom is formed into a weldless hoop or tyre.
At each side and in the centre of the machine and attached to the fixed bed is a
hydraulic cylinder having a ram with small guide roll fitted thereto which rolls
work to and from the tyre for the purpose of bearing upon and keeping it in
position and shape whilst being rolled.
The rolls are driven by gearing and horizontal shafting, rolling the hoop or tyre
vertically instead of horizontally.
To produce a tyre the bloom is put on the inside roll, the moveable bed with
outside roll is then raised by the large hydraulic cylinder then the guide rolls are
brought to bear on the bloom the pressure in the two small cylinders is shut off and
to regulate the said pressure on the bloom the escape valves are regulated by means
of a sliding weight attached to them.

page_text: When the machine is put in motion the bloom to produce the tyre expands and
at the same time forces the small guide rolls back, but still keeping the tyre in a
vertical position whilst being rolled by means of two discs one on the end of each
hollow shaft.
The rolls are formed taper fitting into the hollow shafts and are secured thereto
by keys.
Or this invention may be constructed into a double mill having two hydraulic
rams for raising and lowering the moveable bed and outside rolls, which rolls are
driven by means of centre gearing, whilst the top hollow shafts and inside rolls are
driven by gearing at each end and the two outside rolls and their hollow shafts
rise and fall when required by means of the said hydraulic rams, the advantage
being that two hoops or tyres of either one or different sections may be rolled at
the same time.
The accompanying drawings illustrate our invention the same letters of reference
apply throughout the different views.
Fig. 1, is a plan shewing hollow shaft A. to receive inside roll B. (as shewn in
Fig. 6.) working in a moveable pedestal C. and secured in such pedestal by
collars D. and sliding through bush E. inside bearing F. (as shewn in Fig. 6) also
illustrating hydraulic cylinders G. and valve H. for forcing guide rolls upon the
tyre J. which is held in position by discs K., also moveable bed L. and shafting M.
to the hollow shaft and outside roll N. (as shewn in Fig. 6) together with shafting O.
to gearing.
Fig. 2, is a front view in elevation shewing screw P. for sliding moveable
pedestal C. for regulating the hollow shaft and inside roll the distance between the
discs K. so as to roll the breadth of tyre required. The slide Q. is to receive the
moveable bed L. and couple it with the adjoining half of the machine, R. is
the hydraulic ram for raising or lowering the bed L. and outside roll N. when
required.
Fig. 3, is an end view in elevation shewing the tyre J. when rolled and the
position of guide rolls in connection with hydraulic cylinders G.
Fig. 4, is an end view in elevation of gearing from the end of moveable bed L.
and shafting M.
Fig. 5, is an end view in elevation of gearing shewing shafting O. and hollow
sliding shaft A.
Fig. 6, is a sectional elevation shewing hollow shafts and inside and outside
rolls B. and N. also collars D., bushes E. and key S., also wedge holes T. for
driving out the rolls when others are required to be replaced together with extra
collars V. in each end bearing to give extra strength also illustrating knuckle
joint W.
Fig. 7, is a plan of double machine shewing centre gearing.
Fig. 8, is a front elevation of Fig. 7.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
Firstly. Improvements in mills for manufacturing weldless hoops and tyres for
wheels of railway carriages and other vehicles. Also expansion hoops, corrugated
tubes and weldless boiler tubes, angle rings or any kind of weldless ring required to
any section and can be rolled either singly or doubly by using the double mill as
illustrated in the accompanying drawings.
Secondly. In keeping the hoop or tyre whilst being rolled in its vertical position
by means of hydraulic cylinders with guide rolls having regulating valves to give
the required pressure on the outside of the tyre whilst being rolled.
Thirdly. In the construction of a bottom bed or frame constructed with dove-
tailed projection which slides into a corresponding groove made to receive it which
couples securely the two beds together, also that either bed may be made moveable
and acted upon by means of an hydraulic ram.

page_text: Fourthly. In the construction of the pedestal for the hollow shaft and inside roll
and in being able to regulate the said hollow shaft and inside roll and disc to suit
the required breadth of hoop or tyre to be rolled which is regulated by means of a
screw or screws.
Fifthly. In improvements in the combination of mills for manufacturing weldless
tyres for wheels of railway carriages and other vehicles as hereinbefore specified
and described and as illustrated by the accompanying drawings.
Dated this 14th day of December 1891.
WM. MCGOWAN,
Agent for the Applicants.