Improvements in Pulleys for Cable Tramways.
Year: 1895

page_text: Date of Application, 26th Nov., 1895
Complete Specification Left, 26th Aug., 1896-Accepted, 10th Oct., 1896
PROVISIONAL SPECIFICATION.
Improvements in Pulleys for Cable Tramways.
1, WILLIAM NEWBY COLAM, of Billiter Buildings Billiter Street, in the City
and County of London, Engineer, do hereby declare the nature of this invention
to be as follows :-
This invention relates to an improved device for mounting and carrying the
vertical and horizontal pulleys for cable tramways.
The vertical pulley-the eye of which is preferably bushed with lignum vitæ―
is mounted loosely on a pin axle carried by the bracket hereinafter described, two
or more wrought iron washers being loosely mounted between the faces of the boss
of the pulley and the sides of the bracket carrying the pin axle, the said axle
being prevented from revolving by any suitable device. The bracket carrying the
pin axle consists essentially of two side plates terminating in transverse plates
cach having a groove in which is mounted a block of hard wood the said blocks
being shaped to adapt them to rest on two round bars mounted transversely in the
cableway. To fix the bracket in position on the bars eyebolts encircle the bars
and engage with slots in the ends of the bracket, suitable nuts being threaded on
the eyebolts for the purpose. It will be seen that by this construction the position
of the pulley in the cableway can be easily and readily adjusted, or it can be
moved to one side of the cableway for repairs or otherwise by simply slackening
two nuts, without the necessity of removing any of the parts.
The horizontal pulley which is preferably inade in two parts, one forming the
rin or face and the other the eye and arms thereon, is mounted loosely on a
vertical pin or axle mounted in a foot plate hereinafter described, the eye of the
pulley being bushed with white metal. The friction between the bearing face of
the boss of the pulley and the face of the boss on the foot plate on which it rests
is taken by two washers each of which bas radial ribs on one of its faces which
engage with recesses in the faces of the boss of the pulley and of the boss on the
foot plate respectively. The foot plate carrying the vertical axle is mounted on
three studs carried by a foundation plate the holes to receive the said studs being
slotted so as to provide for the adjustment of the pulley within certain pre-
determined limits. The foot plate carrying the axle is locked to the foundation
plate by means of nuts screwed on to the said studs. The foot plate carrying the
vertical axle is provided with a cup-shaped recess adapted to form a lubricator,
the lubricant being fed thereto through suitable holes or channels in the vertical
axle and through grooves or recesses in the rubbing faces of the washers thereof,
and to prevent dirt or dust gaining access to the said lubricator the boss of the
pulley is formed with a suitably shaped flange adapted to form a cover to the said
cup. The vertical axle is fixed to its foot plate by having its end tapered and it
is locked in position by means of a radial set screw.
Dated this 26th day of November 1895.

page_text: 1, WILLIAM NEWBY, COLAM, of Billiter Buildings, Billiter Street, in the City
and County of London, 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 :--
This invention relates to an improved device for mounting and carrying the
vertical and horizontal pulleys for cable tramways.
In the accompanying drawing,
Figure 1, is a view, in elevation-partly in section—of the invention as applied
to a vertical pulley, and Figure 2. is a view in plan-partly in section—thereof.
In both views similar parts are denoted by like letters of reference.
Figure 3. is a view in sectional elevation of the invention as applied to a horizontal
pulley and Figure 4. is a view in plan thereof.
The vertical pulley A. the eye of the boss a of which is preferably bushed with
lignum vitæ is mounted loosely on a pin axle B carried by a bracket C which will
be hereinafter more particularly described. Two or more wrought iron washers D
are loosely mounted between the faces of the boss of the pulley A and the sides
of the bracket C carrying the pin axle B the said axle being prevented from
revolving by any suitable device such as that shown in the drawings. The
bracket C. carrying the pin axle B consists essentially of two side plates C
terminating in transverse plates c' each having a groove 2 in which is mounted a
block of hard wood E the said blocks being shaped to adapt them to rest on two
round bars F mounted transversely in the cableway.
To fix the bracket C in position on the bars Feyebolts G encircle the bars and
engage with slots in the ends of the bracket suitable nuts g being threaded on
the, eyebolts for the purpose.
It will be seen that by this construction the position of the pulley in the
cableway can be easily and readily adjusted, or it can be moved to one side of
the cableway for repairs or otherwise by simply slackening two nuts, without the
necessity of removing any of the parts.
The horizontal pulley H which is preferably made in two parts, one forming
the rim or face and the other, the eye and arms thereon, is mounted loosely on a
vertical pin, or, axle. J mounted in a foot plate K hereinafter more particularly
described, the eye in the boss of the pulley being bushed with white metal. The
friction between the bearing face of the boss of the pulley H and the face of the
boss on the foot plate K on which it rests is taken by two washers L each of which
has radial ribs on one of its faces which engage with recesses in the faces of the
boss of the pulley and of the boss on the foot plate respectively. The foot plate K
is mounted on, three studs M carried by a foundation plate N the holes k in the
plate K to receive the said studs being slotted so as to provide for the adjustment
of the pulley within certain predetermined limits. The foot plate K is locked to
the foundation plate N by means of nuts screwed on the studs M. The foot
plate K is provided with a cup-shaped recess adapted to form a lubricator, the
lubricant, being fed thereto through suitable holes or channels.j in, the vertical axle
and through grooves or recesses in the rubbing, faces of the washers thereof as
shown in the drawings, and to prevent dirt or dust gaiaing access to the said
lubricator the boss of the pulley H is formed with a suitably shaped flange h
adapted to a cover to the said cup. The vertical axle J is fixed to the foot
plate K by means of a set screw such as O the end of the axle being preferably
tapered as shown.

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 what I
claim is :-
1. The improvements in and relating to pulleys for cable tramways substantially
as hereinbefore described.
2. The device for mounting the vertical pulleys for cable tramways_as
herein before described with reference to Figures 1 & 2 of the accompanying
drawings.
3. The device for mounting the horizontal pulleys for cable tramways sub-
stantially as herein before described with reference to Figures 3 & 4 of the
accompanying drawings..
4. The combination of parts herein before described with reference to Figures 3
& 4 of the accompanying drawings forming an improved horizontal pulley for use
in cable tramways.
Dated this 26th day of August 1896.
ROBERT E. PHILLIPS, A.M.I.C.E., M.I.M.E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent.
ROBERT E. PHILLIPS, A.M.I.C.E., M.I.M.E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent.