Improvements in and relating to Pulleys and Pulley Frames for Carrying Wire for Operating Railway Signals and for like purposes.
Year: 1898

page_text: Date of Application,
26th Oct.,
1000
Complete Specification Left. 26th July. 1899-Accepted. 23rd Sept.. 1899
Complete Specification Left. 26th July. 1899-Accepted. 23rd Sept.. 1899
PROVISIONAL SPECIFICATION.
Improvements in and relating to Pulleys and Pulley Frames for
Carrying Wire for Operating Railway Signals and for like
purposes.
I, LLEWELLYN WYNN WILLIAMS, Bachelor of Science of Glasgow University, of
the Railway Appliances Works, Cathcart, in the County of Renfrew, Engineer,
do hereby declare the nature of my invention to be as follows:-
My invention has for its object to improve and simplify the construction of
pulleys and pulley frames for carrying the wire which operates the signals on
railways, and for carrying wire, rope or chain for other purposes. forge or
press and flange the pulley wheels from sheet iron or steel to the required shape,
or machine them from round bars, or I may use ordinary cast iron pulleys.
These pulleys are in shape circular dises, with a groove in the periphery shaped
so as to receive the wire, and with a hole preferably circular, in the centre to
admit a round bolt or shaft on which the pulley wheel revolves; or the bolt or
shaft may be rigidly fixed to the disc, in which case the pulley wheel and bolt
or shaft will revolve as one piece in the bearings of the shaft.
The frames or housings for the pulley wheels are formed preferably of wrought
iron or steel cut from rolled sections such as channel, angle, H, Z, T, U, polygonal
and flat iron, or tubes or any combination of these sections. When using channel
iron a hole is punched or drilled in the web or part joining the two sides of the
channel, so as to admit the bolt or shaft which carries the pulley wheel. In the
sides of the channel are punched, or otherwise formed, holes so shaped as to
allow the wire, rope, or chain to pass through, the sides of these holes forming
a guard to prevent the wires from leaving their proper positions in the grooves
of the pulley wheels.
The pulley wheels are placed either wholly between the two sides of the channel,
cr the wheels may project through one or both sides of these. By arranging
rice versa to the foregoing arrangement the pulley wheels and their bolts or shafts
which carry them, the bolts pass through holes in the sides of the channel and
in the table of the channel are holes suitably shaped to admit the wire, or both
the wire and a segment of each pulley wheel. When using iron of angle section
the bolt holes are formed in one side, and in the other side are the holes to receive
the wires or both the wires and protruding segments of the pulley wheels. When
using iron of H section the bolt holes are formed either in the web or in the
sides of the H the holes through which the wires or both the wires and the pro-
truding segments of the pulley wheels pass, being formed in the sides or the
web of the H.
In another arrangement I use two channels facing each other, the pulley wheels
being placed parallel to and between the two webs of the channels. The edges
of the sides or flanges of the one channel are kept at a suitable distance from
the edges of the sides of the other channel by separate distance pieces placed
between the web of each channel or by shoulders on the bolts or shafts which
carry the pulley wheels and secure the two channels together or by forming

page_text: flanges from and perpendicular to the webs. The space between the edges of the
flanges of the two channels forms a passage for the wires, the sides themselves
ensuring the wires being kept properly in the grooves of the pulley wheels.
The foregoing pulley frames are fastened to iron or timber stakes in the usual
manner, that is to say, the frames are bolted to stakes so as to fix them to the
stakes either rigidly or loosely so as to swivel in the case of pulleys carrying wire
round a curve. By making stakes of iron of the foregoing sections, and forming
holes in the webs and flanges to admit the bolts, wires, and segments of pulley
wheels, as described for pulley frames I combine the pulley frames and stakes in
one piece and thus obviate the bolting or otherwise attaching separate pulley
frames to the ordinary iron stakes.
When the stakes are used in a horizontal position as when driven into a wall
I can press out of the webs or flanges of the stake, flanges or lugs to stand per-
pendicular to the webs or flanges from which they have been pressed or formed.
Through these lugs or flanges so formed I pass the bolts or shafts on which the
pulley wheels are mounted.
To ensure the easy revolving of the pulley wheels bosses are formed on their
sides, or these bosses may be pressed out of the pulley frame at the bolt of shaft
holes. To protect the pulley wheels for snow and dirt, flanges may be formed
from the metal of the pulley frames or separate pieces inserted.
In another arrangement I use pulley wheels travelling on trunnions or circular
bosses in slots or races pressed or formed in the pulley frames.
In another arrangement the pulley wheel or roller which carries the wire,
rotates on the circumference of pulley wheels which revolve on axles or bolts,
or I displace pulley wheels altogether by balls travelling in a suitable race.
Dated the 25th day of October 1898.
Improvements in and relating to Pulleys and Pulley Frames for
Carrying Wire for Operating Railway Signals and for like
purposes.
I, LLEWELLYN WYNN WILLIAMS, Bachelor of Science of Glasgow University, of
the Railway Appliances Works, Cathcart, in the County of Renfrew, Engineer,
do hereby declare the nature of my invention and in what manner the same is to
be performed to be particularly described and ascertained in and by the following
statement, that is to say:-
1
My invention has for its object to improve and simplify the construction of
pulleys and pulley frames for carrying the wire which operates the signals on
railways, and for carrying wire, rope or chain for other purposes. I forge or
press and flange the pulley wheels from sheet iron or steel to the required shape,
or machine them from round bars or I may use ordinary cast iron pulleys.
The frames or housings for the pulley wheels are formed preferably of wrought
iron or steel cut from rolled sections such as channel, angle, H, T, U, and flat iron,
or any combination of these sections.
And in order that my said invention and the manner of carrying same into
practice may be properly understood I have hereunto appended a sheet of expla-
natory drawings in which the same reference letters are used to indicate
corresponding parts in all the figures where shown. Figure 1 is a perspective
elevation illustrating my improvements as applied for carrying single pulleys

page_text: over each other. Figure 2 is a sectional plan view corresponding to Figure 1,
and Figure 3 is a similar view showing how the pulleys may be housed by these
frames in parallel multiple line. Figure 4 is a perspective view of angle iron
arrangement of frame, and Figure 5 is a corresponding sectional plan. Figure 6
is a sectional plan of H iron. Figure 7 is a side elevation and Figure 8 a sec-
tional plan view of flat iron form of frame. Figures 9, 10, and 11, show views of
the channel section arrangement of frame as applied for carrying the wires at
an angle.
Figure 12 shows an arrangement of frame for protecting the pulley bearings
from snow or dirt, and Figure 13 illustrates an arrangement of channel iron frame
with paps punched in same, to keep the pulley central, and which may be used
instead of that shown in Figure 2.
Referring to these drawings:--As shown in Figures 1 to 3 the housing frames
are formed from wrought iron and steel bars a rolled into channel, angle, and like
sections, and cut into appropriate lengths. These bars a have parts cut away
at a to receive pulleys and machined at a for the signal operating wires to
pass through, and a saw draught is made at at for bringing in the wires. The
pulleys are carried on screw threaded bolts c which pass through holes formed in
the cheeks of the housings a and are held by screw nuts c¹.
These pulley frames a can be used to form the pulley stakes by having a pointed
end and thus dispense with the separate timber stakes hitherto used.
The pulley wheels are placed either wholly between the two sides of the
channel, or the wheels may project through one or both sides of these. By
arranging vice versa to the foregoing arrangement the pulley wheels b and their
bolts which carry them, the bolts pass through holes in the sides of the channel,
and in the table of the channel are holes suitably shaped to admit the wire z or
both the wire and a segment of each pulley wheel. When using iron of angle
section as shown in Figures 4 and 5 the bolt holes are formed in one side, and
in the other side are the holes to receive the wires or both the wires and protruding
segments of the pulley wheels b. When using iron of H section as shown in
Figure 6 the bolt holes are formed either in the web or in the sides of the H, the
holes through which the wires or both the wires and the protruding segments of the
pulley wheels, pass, being formed in the sides or the web of the H.
In another arrangement I use two channels facing each other like flat iron as
shown in the Figures 7 and 8 the pulley wheels 6 being placed parallel to and
between the two webs of the channels. The edges of the sides or flanges of the
one channel are kept at a suitable distance from the edges of the sides of the
other channel by separate distance tube pieces & placed between the web of each
channel, or by shoulders on the bolts which carry the pulley wheels and secure the
two channels together, or by forming flanges from and perpendicular to the webs.
The space between the edges of the flanges of the two channels forms a passage
for the wires z the sides themselves ensuring the wires being kept properly in
the grooves of the pulley wheels b.
The foregoing pulley frames are fastened to iron or as shown in Figures 7
and 8 to timber stakes in the usual manner, that is to say, the frames are attached
to stakes by screws. Or they may be arranged loosely as shown in Figures 9,
to 11, Figure 9 being a front elevation of the frame a and Figures 10 and 11 a side
elevation and a plan respectively, so as to swivel in the ease of pulleys carrying
wire round a curve by mounting the pulley b in a frame to oscillate vertically
on a bolt in the frame a. By making stakes of iron of the foregoing
sections, and forming holes in the webs and flanges to admit the bolts, wires, and
segments of pulley wheels, as described for pulley frames I combine the pulley
frames and stakes in one piece and thus obviate the bolting or otherwise attach-
ing separate pulley frames to the ordinary iron stakes.
To protect the pulley wheels from snow and dirt, flanges e may be formed
from the metal of the pulley frames a and bent over as shown in dotted lines in
Figure 12 so as to protect the axles of the pulleys.

page_text: 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:
_
First. In connection with pulleys, and pulley frames for carrying wire for
operating railway signals and the like, the method of forming the housing frames,
consisting in using rolled iron and steel bars and cutting these into short lengths
and machining them into suitable formation to receive and house the pulleys,
substantially as set forth.
Second. The combination with signal wire pulleys and retaining bolts, of a
housing frame formed from iron or steel bars and machined into shape, sub-
stantially as set forth.
Third. In connection with pulleys and pulley frames for carrying wire for
operating railway signals and the like, the arrangements of pulley frames in
combination with their pulleys and fittings substantially as herein described in
reference to and shown in the accompanying drawings.
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.