Year: 1899

page_text: I, FREDERICK WILLIAM TANNETT-WALKER, of Hunslet, Leeds, in the County of
York, Engineer, do hereby declare the nature of this invention to be as follows:-
According to this invention all the motions are given by plain direct acting rams
and the advantage is obtained that the controlling valves can be placed in any part
of the shop in which the crane works.
The lifting cylinder is usually horizontal and is carried by a short longitudinal
girder whose ends are supported on carriages free to move transversely on cross
girders. The crab is carried by a cross girder whose ends are supported on carriages
free to move on longitudinal girders and the monkey to which the ends of the lifting
ropes are attached is supported on a carriage free to move transversely on a cross
girder at the opposite end of the shop to the lifting cylinder.
The lifting cylinder, the crab and the monkey, are always in a line with each other
and are simultaneously moved transversely by ropes worked by a pair of cylinders
placed in any convenient part of the shop and the girder carrying the crab is moved
longitudinally by ropes worked by another pair of cylinders.
The hoisting cylinder need not be horizontal but might work across the end of the
shop in a vertical position, running on a rail on the ground.
F. W. TANNETT-WALKER.
I, FREDERICK WILLIAM TANNETT-WALKER, of Hunslet, Leeds, in the County of
York, 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 :-
According to this invention all the motions are given by plain direct acting rams
and the advantage is obtained that the controlling valves can be placed in any part
of the shop in which the crane works.
The lifting cylinder is usually horizontal and is carried by a short longitudinal
girder whose ends are supported on carriages free to move transversely on cross
girders. The crab is carried by a cross girder whose ends are supported on carriages
free to move on longitudinal girders and the monkey to which the ends of the lifting
ropes are attached is supported on a carriage free to move transversely on a cross
girder at the opposite end of the shop to the lifting cylinder,

page_text: The lifting cylinder, the crab and the monkey, are always in a line with each other
and are simultaneously moved transversely by ropes worked by a pair of cylinders
placed in any convenient part of the shop and the girder carrying the crab is moved
longitudinally by ropes worked by another pair of cylinders.
Figure 1 is a plan, and Figure 2 a vertical section (on the line 2-2 Figure 1) of a
shop fitted with a travelling crane constructed according to this invention.
A is the lifting cylinder and a are the ropes. B is the crab. C is the monkey to
which the ends of the ropes a are fixed. D are the cylinders (only one of which is
shewn) for traversing the cylinder A, the crab B, and monkey C, simultaneously
across the shop, and d d' d² are the ropes by which this is done. E are the cylinders
for moving the crab B lengthwise of the shop, and e are their ropes.
The cylinder A is fixed between two longitudinal girders f, whose ends are fixed to
carriages, provided with wheels f2, running on fixed transverse girders g.
The crab B carries pulleys around which the ropes a pass and is mounted on
wheels running on transverse girders whose ends are fixed to carriages j
provided with wheels running on fixed longitudinal girders k.
The monkey C is provided with wheels c running on fixed transverse girders.
The ropes a are fixed at one end at ex to the cylinder A and pass round the
pulleys a carried by the cylinder and ram respectively and round the pulleys b on
the crab their other ends being fixed to the monkey C.
The ropes & are fixed at one end to an eye dx and pass round the pulleys d³ dɩ
carried by the cylinders and rams respectively, round the pulleys m carried by the
brackets m' fixed to the wall of the shop round the pulleys on the girders f and
have their other ends fixed at g' to the girder g.
The ropes are fixed at one end at dx to the cylinders D, and pass round the
pulleys, round the pulleys on the carriages, round the pulleys 62 on
the crab B, again round the pulleys 2 and have their other ends fixed to the girder /
or to the end wall of the shop.
The ropes are fixed at one end at dx to the cylinders D, and pass round the
pulleys dd, round pulleys n pivotted between the girders, round pulleys c¹ on
the monkey C and have their other ends fixed to eyes o fixed to the girders.
The ropes e are fixed at one end to the girders hand at the other end to pulleys p
on which they are wound. The pulleys are fixed to shafts q. are ropes fixed at
one end to the cylinders E and at the other to the pulleys p¹ on the shaft 9 and
passing round pulleys 23 on the cylinder E and its ram respectively.
The cylinder A need not be horizontal but might work across the shop in a vertical
position running on a rail on the ground.
The cylinders D and E may also be horizontal.
A single rope or any number of ropes may be employed instead of two as shown.
Sometimes when the shop is very long the racking and travelling are done as above
described but the lifting is done by worm gear on the crane itself this worm gear
being driven by a rope or ropes or by a square shaft, these ropes or square shaft being
actuated by a separate engine. No claim is made to this method of lifting.
Figure 3 is a plan, and Figure 4 a vertical section on the line 4-4, Figure 3,
showing this arrangement.
In these figures the cylinders D and E with their ropes are omitted, only the
means for lifting being shown.
s are the levers working the valves of the cylinders D and E and for throwing the
lifting power into and out of gear. t is the main shaft driven in any convenient
manner and giving motion by the belts th to the shaft on which is fixed
the pulley u¹. is an endless rope passing around the pulley and traversing the
whole length of the shop being guided by stationary pulleys and pulleys won one
of the carriages j. On the shaft of one of the pulleys w is fixed a worm 20²
gearing with a worm wheel x on a shaft on which is fixed a pulley 2 y is a rope
having one end fixed to the pulley 2 on which it is wound and which passes around
the pulleys b on the crab B around a pulley on the other carriage j and has its
other end fixed at y¹ to the first mentioned carriage j.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I claim is :-
1. Travelling cranes in which the longitudinal and traversing motions of the crab
are given by direct acting rams substantially as described.
2. Travelling cranes in which the longitudinal and traversing motions of the crab
and the lifting motion are given by direct acting rams substantially as described.
3. The combination of a hydraulic lifting cylinder movable across one end of the
shop with means for traversing it and simultaneously traversing the crab substantially
as described.
4. Travelling cranes substantially as described and illustrated in the drawings.
Dated this 17th day of February 1900.