A SYSTEM OF OR BEARINGS FOR ENDLESS ROPES OR WIRES, AND FOR ANALOGOUS PURPOSES
Year: 1884

page_text: I, HERBERT JOHN HADDAN, of 67, Strand in the City of Westminster, Civil
Engineer, do hereby declare the nature of said Invention for "A SYSTEM OF
OR BEARINGS FOR ENDLESS ROPES OR WIRES, AND FOR
ANALOGOUS PURPOSES," a communication to me from abroad by Michel Thomar,
Bruxelles, to be as follows:-
PULLEY-SUPPORTS
This invention relates to the means of supporting the guide-pulleys of cables,
wires, or bands, such as endless steel ropes, strings and sawing wires, and has for
ita principal object to render the position of such pulleys easily and correctly
adjustable.
For this purpose the pulley or pulley axle is supported by a bracket adapted to
turn on an axis which forms a tangent to the groove of the pulley and is also the
axis of a piece adapted to turn on another bracket secured to any suitable stand.
Two pulleys placed at an angle to each other may be supported by the same
post, each pulley being held by a bracket attached to a common support in such a
manner, that it may be turned on the said support, or together with the latter
about an axis tangential to the two pulleys, which axis coincides also with that
portion of the rope which is situated between the two pulleys. The said common
support is in its turn pivoted to a bracket adapted to slide along a column or stand
and to be clamped thereto at any desired part and at various angles by means of
bolta.
A driving palley may be fixed to the upper end of a vertical shaft, which serves
as a pivot to a pair of radial brackets each of which holds the fulcrum for the
bracket of a guide pulley placed at a variable angle to the driving pulley, each
fulcrum coinciding with the common tangent between the driving pulley and the
respective guide pulley.
In this case each bracket supporting one of the two guide-pulleys may be fixed
to the respective radial arın and turned with the latter around the vertical driving
chof

page_text: The system is especially applicable to the various tension-guide-and driving
pulleys of stone working machinery in various positions and combinations.
In all cases the axle bearing of the adjustable pulley is adapted to turn on an
axis tangential to the groove of the pulley.
The driving gear of stone working machinery may comprise:
a) a tension pulley mounted on an oblique carriage and held by a bracket
adapted to turn through a right angle.
b) a pair of guide pulleys mounted on a column at a variable height.
c) a stand or frame with vertical screw spindle for a carriage with automatic
feed motion.
d) a horizontal guide pulley placed in a pit and adapted to slide along a vertical
shaft.
e) a pulley mounted on the top of a column and supported by a shaft with
universal joint adapted to turn the pulley in all directions.

page_text: TCATION,
I, HERBERT JOHN HADDAN, of 67 Strand, in the City of Westminster, Civil
Engineer, do hereby declare the nature of my invention for A SYSTEM OF PULLEY
SUPPORTS OR BEARINGS FOR ENDLESS ROPES OR WIRES, AND FOR ANALOGOUS
PURPOSES, a communication to me from abroad by Michel Thomar of Rue du
Marteau Bruxelles, Belgium, Gentleman, and in what manner the same is to he
performed, to be particularly described and ascertained in and by the following
statement:-
The present invention consists in mounting a guide pulley for cables or wires
(such as endless wire-ropes or saw-wires) on a bracket or frame adapted to turn on
an axis which forms a tangent to the groove of the pulley, and is also the axis of a
piece adapted to turn on another support secured in any suitable manner.
Figs. 1 and 2 of the accompanying drawing represent a set of two pulleys
mounted on the same post E.
Each pulley is held by a frame B so attached to the support c that it can be
made to turn on this support, or, with the latter, on an axis xx¹, and by causing
the wire or cable to follow this axis on a part of its way (through an opening
made for the purpose in the support c), its direction can be varied in any desired
manner.
This support c is attached to the bracket D by a pivotal pin or stud g, adapted
to turn in the latter, while the bracket D itself may be fixed to the post E at any
height and at any angle.
Figs 3 and 4 are an elevation and a plan of the same principal parts as shown in
Figs 1 and 2, but applied to the driving and guide-pulleys of a tubular rock borer
driven by an endless cable.
An examination of the drawings will be sufficient to show how the relative
position of the guide-pulleys to the driving pulley may be varied.
This appliance consists of a sheet iron tube 1 the part 2 of which is provided
with vertical grooves. The tube is maintained in a vertical position by a shaft 3,
fitting below into a step bearing 4 and above into a sleeve 5, adapted to slide
along the shaft so as to come into gear with the axle 6 carrying the driving-
pulley L
This axle can turn in a socket piece 7 supported by a stand or frame-work
formed by three posts 8. These posts are united above by the socket piece 7, and
below by a ring 9 resting on the floor.
This frame work is maintained in a vertical or slightly inclined position by
means of ties 10 made of iron wire which are tightened by adjusting screws, and
secured to the rock by wedges, let into apertures 11.
Two cranks or supports C are adapted to turn on the axis of the socket 7 and
carry at their extremity a hinge joint J the axis of which is tangential to the
circumference of the pulley L On each of these hinge pieces is attached the
forked holder B of a pulley A, the circumference of which is also tangential to the
axis of the hinge piece J.

page_text: This combination of pulleys allows the cable to run on and off the pulleys
in the required manner, no matter what the direction of the two ends of cable
may be.
The arms or supports C¹ are first fixed on the base plate of the socket piece 7
when they have been placed in a suitable position.
The tube 1 is made to turn on its own axis by means of the shaft 3, when it
engages with the axle 6 of the driving-pulley.
The movement of the shaft 3 is communicated to the tube 1 by a coupling box 13,
carrying at the lower part a cross head 14, the ends of which engage with the upper
part of the tube.
Fig. 5 is a general view of various appliances, making up together an apparatus
for sawing or cutting stone as used in quarries, the illustration being sufficient to
enable competent persons to apply the contrivance which my correspondent bas
invented, and which is represented especially in Figs. 1 and 2 of the accompanying
drawing.
This apparatus comprises:
1st A tension appliance Fig 5ª, serving to give a uniform tension to the cable or
wire, and consisting of a carriage W forming a counterpoise rolling on an inclined
plane, and supporting the pulley A mounted on the moveable frame B pivoted at C,
and therefore able to adopt any angle up to the vertical position shown by a dotted
line.
To the upper part of the inclined plane there are fixed two guide-pulleys A"
with holder pivoted at C (as in Fig 1). These pullies, (only one of which is
shown in the drawing) are employed when the two ends or halves of the wire or
cable go too far apart; in this case, the pulley A. is placed parallel to the inclined
plane, and the two ends or halves of the cable or wire are led over the pulleys A".
One of these pulleys receives the cable or wire, and guides it to the counterpoise
pulley A; the other receives it and returns it in its proper direction.
2ndly A pulley guide-post, Fig 5b, of any convenient height and which can be put
up in various places and positions.
3rdly Fig 50 represents a frame work for lowering and guiding the sawing-wire
in the right groove when working in a quarry.
This frame-work carries a pulley A whose holder B is hinged (as in Fig 1) so
that this pulley can receive the wire from any direction and deliver it in the
same way.
A pulley A over which passes the sawing or cutting wire is supported by a
block guided in a slide or groove of the stand X and fixed to a screw-threaded rod,
moving automatically in the manner described hereafter, so as to make the
pulley A move forward for the purpose of sawing, cutting etc.
The axis of the hinged support C is, at the same time, that of a worm wheel m
which actuates the driving gear m' of the automatic movement so that the
pulley A can actuate this tooth gear or worm-work m in every position round
the axle.
This tooth-wheel which drives the screw-threaded rod of the pulley A¹¹ by
means of the wheel m' is set in motion by a ratchet, and bevel gear as indicated
by dotted lines or, as is likewise shown in the drawing, by an endless screw V,
turning in a small bracket fixed to the hinged support C, this screw being actuated
by the small pulleys p p¹ and a strap and being always held by the hinged
support C, no matter what position may be given to the latter by the adjustment
of the pulley A.
4thly Fig 5, represents a contrivance for lowering and guiding the compound
wire or strand, when two cuts are to be made at an angle by the same wire,
This apparatus is employed like the one shown in Fig. 5º.
It is composed of a vertical axle following the axis of a circular pit and main-
tined in position above by means of a beam or bridge piece.
The guide-pulley A* rotates around this shaft and has, moreover, a rectilinear
movement following its axis.

page_text: This movement it receives from a rack F or a screw by means of a crank handle P
which regulates the descent.
Friction rollers G, running on the side of the pit, prevent the pulleys from
vibrating.
5thly Fig. 50 represents a pulley Q mounted on an axle with a gimbal or
universal joint R which affords the means of placing this pulley at any desired
angle, in other words, to let the circumference of the pulley occupy any plane.
The dotted lines in the drawing show the different positions which the pulleys
or wires might occupy.
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. A system of pulley-supports for endless ropes, wires or cables, comprising a
bracket B forming a bearing for the pulley axle and adapted to turn on an axis
, tangential to the groove of the pulley, and a binged piece C forming a pivotal
bearing for the bracket B and adapted to turn in a bracket D fixed to a column E
or other suitable support.
2. The combination with a driving pulley I driving shaft and means for guiding
or supporting the same, of a pair of guide-pulleys A, a pair of brackets Beach of
which holds a pulley A and is adapted to turn on an axis tangential to the groove
of the respective guide-pulley as well as to that of the driving pulley I, and a pair
of arms C¹ holding the brackets B and adapted to turn on the axis of the driving
pulley.