Improvements in Cranes or Hoisting and Lowering Machinery.
Year: 1893

page_text: Date of Application, 11th Aug., 1893
Complete Specification Left, 11th May, 1894-Accepted, 16th June, 1894
PROVISIONAL SPECIFICATION.
Improvements in Cranes or Hoisting and Lowering Machinery.
I, JAMES TAYLOR, of 59, Hamilton Square, Birkenhead, in the County of
Chester, Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention has reference to cranes, or hoisting and lowering machinery, for
lifting, lowering, and moving, mainly, heavy weights; and has for its object,
amongst other things, to provide an advance in the arrangement or construction
and operation of such machinery, by which greater facilities, and improved modes
of moving (including lifting and lowering) weights about, combined with a simple
construction, are afforded.
Under this invention, I employ in connection with a swinging crane, or a turn-
table crane, with the operating machinery thereon, a movable jib mounted as in
shearlegs. Further, the movable jib is raised and lowered and held in position by
wire ropes (or chains) passing over suitable pulleys on the jib or jib head, and
pulleys mounted on the frame of the crane, and behind the centre or at the back
of the axis of the turn-table-say at the upper part thereof; by this the weight of
the pulleys and the machinery for hanling in and paying out the ropes, as well as
that of the frame, serve to balance the whole machine and so help in adjusting the
stresses thereon, and on the turn table. The machinery for hauling in and paying
out these ropes may be conveniently disposed below the aforesaid pulleys.
In one arrangement, the pulleys, over which the weight lifting wire-rope (or
chain) passes, may be mounted on the same axis as the jib lifting and lowering
In some cases, beyond these jib-pulleys, further pulleys, or a further pulley,
may be provided on the jib for use in supporting or carrying a rope for lifting and
lowering, say, lighter weights.
rope.
The machinery for operating the weight lifting and lowering rope or ropes
(or chain) is suitably disposed upon the platform or frame of the crane.
In one construction, the frame may be of triangular formation, the jib being
mounted at one of the lower angles in front of the axis, whilst the jib raising and
lowering rope pulleys are mounted at the upper angle of the triangle behind the
said axis.
The turn-table may run on suitable rollers on rails in any suitable known way.
Suitable cotters and keys may be provided in connection with the centre pin to
take up wear caused by looseness when the load is taken up.
In one arrangement, the winding barrel may be short, and of spiral form, to
move the jib in and out, and having a strong worm wheel on the barrel, and a
worm working in connection with its shaft carried to the engine house, a brake
being provided thereon, whereby unwinding or motion of the tension ropes may
be prevented. In some cases separate engines for driving the barrel may be
provided.
A crane having the improvements, or the chief improvement or improvements,
under this invention, constitutes machinery of great utility, and of simplicity, in
that, by it, the advantages and purposes of shearlegs and those of a revolving or
turn-table crane-and moreover with lightness of parts and with the weights well
arranged and distributed-are both afforded therein, and can be used or availed of
either singly or combined. Further, under one construction herein before described,

page_text: the tension rods used in some cases are dispensed with, wire rope being used in
their stead.
Dated this 10th day of August 1893.
CHEESBROUGH & ROYSTON, Fels. Chart. Inst. P.A.,
15, Water Street, Liverpool, Applicant's Patent Agents.
Improvements in Cranes or Hoisting and Lowering Machinery.
I, JAMES TAYLOR, of 59 Hamilton Square, Birkenhead, in the County of
Chester, 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 has reference to cranes, or hoisting and lowering machinery, for
lifting, lowering, and moving, mainly, heavy weights; and has for its object,
amongst other things, to provide an advance in the arrangement or construction
and operation of such machinery, by which greater facilities, and improved modes
of moving (including lifting and lowering) weights about, combined with a single
construction, are afforded.
Under this invention, I employ in connection with a swinging crane, or a turn-
table crane, with the operating machinery thereon, a movable jib mounted as in
shearlegs. Further, the movable jib is raised and lowered and held in position by
wire ropes (or chains) passing over suitable pulleys on the jib or jib head, and
pulleys mounted on the frame of the crane, and behind the centre or at the back
of the axis of the turn-table-say at the upper part thereof; by this the weight
of the pulleys and the machinery for hauling in and paying out the ropes, as well
as that of the frame, serve to balance the whole machine and so help in adjusting
the stresses thereon, and on the turn table. The machinery for hauling in and
paying out these ropes may be conveniently disposed below the aforesaid pulleys.
In one arrangement, the pulleys, over which the weight lifting wire-rope (or
chain) passes, may be mounted on the same axis as the jib lifting and lowering
rope. In some cases, beyond these jib-pulleys, further pulleys, or a further pulley,
may be provided on the jib for use in supporting or carrying a rope for lifting and
lowering, say, lighter weights.
The machinery for operating the weight lifting and lowering rope or ropes (or
chain) is suitably disposed upon the platform or frame of the crane.
The frame is of triangular formation, the jib being mounted at one of the lower
angles in front of the axis, whilst the jib resting and lowering rope pulleys are
mounted at the upper angle of the triangle behind the said axis.
The turn table may run on suitable rollers on rails in any suitable known way.
A crane having the improvements, or the chief improvement or improvements,
under this invention, constitutes machinery of great utility, and of simplicity, in
that, by it, the advantages and purposes of shearlegs and those of a revolving or
turn-table crane-and moreover with lightness of parts and with the weights well
arranged and distributed-are both afforded therein, and can be used or availed of
either singly or combined; and further, under the construction herein described,
the tension rods used in some cranes are dispensed with, wire rope being used in
their stead.
The drawings hereto annexed, illustrative of this invention, shew in Figure 1
an outside elevation, and in Figure 2 a plan of a crane provided with my
improvements.
Referring to the drawings, a is the jib of the crane which is hinged and mounted.
at b, and about which point it is adapted to move up and down. e is the frame,
which, as will be seen, is in the form of a right angle triangle. d is the turn

page_text: table of the crane. e are pulleys placed at the upper end or apex of the triangle
over which the wire rope used for moving the jib a up and down are passed, the
lines marked f designating said rope; and h are pulleys at the head of the jib
over which said ropes pass, i is the barrel of the crane by which the rope fis
taken in and paid out and the jib raised and lowered in the manner of a shear-legs,
such barrel being operated by any suitable gear driven by an engine. This barrel
or drum may be placed in any suitable position in the crane. kis the barrel by
which the load lifting rope is taken in and paid out, such rope being designated 7.
By disposing the jib operating rope pullies e on the frame and at the back
thereof, the weight of such parts is carried by the frame and as far back as possible;
and by having the jib movable as described, and the whole crane mounted and
adapted to revolve in a turn table, a most useful machine for hoisting and lowering
heavy weights is provided, as the characteristics of both a shear-legs, and a turn-
table crane, are produced, which in cranes of large size-to which this invention is
more particularly applicable-is of very considerable value.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The herein described improved machine for raising and lowering, comprising
a frame of right angle triangle or substantially right angle triangle form, with
pulleys in the upper back angle at the top of the crane, and a movable jib with
pulleys in the head thereof, and a wire rope for raising and lowering the jib, and
passing over said pullies on the frame and in the jib head; and said frame being
mounted and adapted to revolve upon a turn table, substantially as set forth, and
as shewn in the drawings hereto annexed.
Dated this 10th day of May 1894.
CHEESBROUGH & ROYSTON, Fels. Chart. Inst. P.A.,
15, Water Street, Liverpool, Applicant's Patent Agents.