Improvements in Pulleys for the Wires of Railway Signals and Point Bolts.
Year: 1894

page_text: Date of Application, 20th Feb., 1894
Complete Specification Left, 15th Nov., 1894-Accepted, 5th Jan., 1895
PROVISIONAL SPECIFICATION.
Improvements in Pulleys for the Wires of Railway Signals and
Point Bolts.
1, ARTHUR GEORGE EVANS, of 116 Palace Chambers, Bridge Street,
Westminster in the County of Middlesex, Civil Engineer, do hereby declare the
nature of this invention to be as follows:-
My invention relates to improvements in wire pulleys employed as supports for
the operating wires of signals, point bolts, or any other apparatus which is to be
operated by wire for railway signalling purposes.
The pulley is provided with a fixed spindle, either cast as part of the pulley or
a spindle keyed making it a fixture. A bracket is provided with projecting sides
and space between the sides sufficient to allow of a hanging support or clip, which
clip or support is kept in position by a pin through the sides of the bracket. On
the lower end of the supports, on the inner side, a path is arranged with terminations
at each end and the roller is inserted between the lower ends of this support the
spindle projecting and revolving on the side paths. In this form it practically
becomes a longitudinally moving pulley.
In the second form the construction is similar to that above described, but the
lower end of the support is sufficiently narrow to allow the pulley to practically
revolve without moving longitudinally.
The object of my invention is to provide a pulley common to all the requirements
of railway signalling, as it will adjust itself to the angle of the wire; further, the
parts, that is to say, the bracket attached to the post and the support hanging from
this bracket are stamped out of sheet iron, steel or other suitable material.
Dated this 20th day of February 1894
JOHN P. O'DONNELL,
70 & 71, Palace Chambers, Westminster, S. W., London,
Agent for the said Applicant.
COMPLETE SPECIFICATION.
Improvements in Pulleys for the Wires of Railway Signals and
Point Bolts.
I, ARTHUR GEORGE EVANS of 116, Palace Chambers, Bridge Street,
Westminster in the County of Middlesex, Civil Engineer, 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 wire pulleys employed as supports for
the operating wires of signals, point bolts, or any other apparatus which is to be
operated by wire for railway signalling purposes.
The pulley is provided with a fixed spindle, either cast as part of the pulley or
a spindle keyed making it a fixture. A bracket is provided with projecting sides
and spaces between the sides sufficient to allow of a hanging support or clip, which
clip or support is kept in position by a pin through the sides, of the bracket. On
the lower end of the supports, on the inner side, a path is arranged with terminations

page_text: at each end and the roller is inserted between the lower ends of this support the
spindle projecting and revolving on the side paths. In this form it practically
becomes a longitudinally moving pulley.
In the second form the construction is similar to that above described, but the
lower end of the support is sufficiently narrow to allow the pulley to practically
revolve without moving longitudinally.
The object of my invention is to provide a pulley common to all the requirements
of railway signalling, as it will adjust itself to the angle of the wire; further, the
parts, that is to say, the bracket attached to the post and the support hanging from
this bracket are stamped out of sheet iron, steel or other suitable material.
In order that my invention may be better understood and more readily carried
into effect, I will proceed to describe the drawing hereunto annexed in which the
same letters refer to the same parts in the several figures.
Figure 1 is a side view of my improved bracket, carrier and pulley.
Figure 2 is a front view of the bracket.
Figure 3 is a sectional view of the carrier for movable pulleys.
Figure 4 is a side view of the carrier with the pulley in position, its trunnions
resting on the enclosed paths formed at the lower portion of the carrier.
Figure 5 is a front view of my alternative form of carrier, the lower end of
the support being wide enough to allow the pulley to revolve without moving
longitudinally.
Figure 6 is a side view of this alternative carrier with the pulley in position,
its trunnions resting on the paths formed at the lower portion of the carrier, and
Figure 7 is a section of this carrier showing the path for the reception of the
pulley.
a is the bracket, b the carrier attached thereto by means of the pin c. d is the
pulley, the trunnions e, e¹ of which revolve on the paths f in the case of a
travelling pulley or on paths g in that of the alternative one having no longi-
tudinal movement. hare the upright terminations of the path with reference
to Figures 1 to 4 and 'the sides in the alternative arrangement Figures 5, 6
and 7.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is :-
1. In pulleys for supporting the wires operating railway signalling apparatus,
arranging a carrier with paths closed at the ends for the pivots of the pulley to
travel along while revolving substantially as described and illustrated in
Figures 1 to 4 of the drawing annexed.
2. In pulleys for supporting the wires operating railway signalling apparatus,
arranging a carrier with paths closed at the ends for supporting the pulley so
that the pulley may revolve without lateral movement, substantially as described
and illustrated in Figures 5 to 7 of the drawing annexed.
3. In pulleys for supporting the wires operating railway signalling apparatus,
a bracket a in combination with the carrier b and the pulley d, substantially
as and for the purposes herein described and as illustrated in the accompanying
drawing.
Deted this Fifteenth day of November 1801
JOHN P. O'DONNELL,
70 & 71, Palace Chambers, Bridge Street, Westminster, London, S. W.,
Agent for the said Applicant.