IMPROVEMENTS IN AND RELATING TO HOISTING APPARATUS FOR WAREHOUSE AND LIKE PURPOSES
Year: 1880

page_text: PROVISIONAL SPECIFICATION left by Edward William West at the Office
of the Commissioners of Patents on the 24th July 1880.
EDWARD WILLIAM WEST, of the City of Liverpool, in the County of Lancaster.
"IMPROVEMENTS IN AND RELATING TO HOISTING APPARATUS FOR WAREHOUSE
AND LIKE PURPOSES."
My Invention relates to the construction of hoisting apparatus for warehouse
and like purposes, where the motion of the main driver is always in one direction,
and consists of a novel construction of double friction hoist receiving motion from a
main driving shaft always running in one direction, the parts of the hoist being
so arranged that the barrel can be made to wind or unwind its lifting ropes or
chains as required by the operator.
In constructing a hoisting apparatus according to my Invention, the main or
lifting barrel, which may be constructed to receive one or two ropes or chains, is
mounted between suitable frames or standards, in one of which there is a fixed
bearing in which one journal of the barrel runs. The other journal of the barrel
runs in a rocking bearing (in connection with but detached from the other frame),
which is provided with two levers. These levers are fixed to the bearing and
extend in opposite directions therefrom, and at right angles to the shaft or journal
of the barrel. Where the levers join the bearing and underneath and at the sides
of the bearing there are formed segmental projections, which fit into corresponding
recesses formed in a gutter, box, or recess in the frame which carries the rocking
bearing. A portion of this frame projects or is recessed, and is lined with wood
and constitutes the brake. On the barrel shaft and outside of this rocking bearing
there is mounted an internal dished friction wheel or disc, within which and nearly
in the same plane as the barrel shaft run two friction pinions. These pinions
are mounted on shafts running in suitable bearings, and are constantly running
in opposite directions, and receive motion by a suitable train of toothed wheels
from the main driving shaft, or by an endless band or chain. Below the main
barrel of the hoist there is a secondary barrel for higher powers, which is driven by
a toothed wheel which receives motion from a pinion at the end of the main barrel
opposite to the dished friction wheel or disc, and capable of being disconnected if
required. The dished friction wheel or disc runs within that portion of the frame
[Price 2d1

page_text: which forms the brake, and the rocking bearing of the main barrel is so adjusted
that when in a central position the dished wheel on the main barrel is braked by
bearing on the lining of the brake, and by rocking the bearing to either side the
'brake is released, and the internal surface of the dished friction wheel is brought
into contact with one or other of the continuously running friction pinions, as
desired by the operator, which effect is accomplished by the operator depressing one
or other of the levers on the rocking bearing, such depression or movement of the
levers being performed by any suitable connection of cords, ropes, rods, or
equivalent gear.
By my Invention a hoisting apparatus having a main barrel with two ropes
wound in opposite directions and the friction pinions constantly running is under
the control of the attendant. In the central and normal position of the dished
friction wheel the hoist is stopped, the brake being on. By rocking the bearing to
one side or the other motion is given in either direction to the barrel, which winds
one rope and lowers the other, and when higher power is required the secondary
barrel may be thrown into gear and used.