Improvements in Hydraulic Coal Hoists.
Year: 1895

page_text: Date of Application, 14th Dec., 1895
Complete Specification Left, 14th Sept., 1896-Accepted, 31st Oct., 1896
PROVISIONAL SPECIFICATION.
Improvements in Hydraulic Coal Hoists.
We, WILLIAM CARTER, Engineer, of 32 King Street, Chester, and THE
HYDRAULIC ENGINEERING COMPANY LIMITED, of Charles Street, Chester,
Engineers, do hereby declare the nature of this invention to be as follows:-
The object of this invention is to facilitate the loading of ships with coal by
means of hydraulic coal wagon tipping hoists, and applies to hoists wherein the
wagons are run on to a cradle lifted by chains or wire ropes passing over sheaves
to the lifting cylinder.
By preference four lifting chains are used, one attached to each corner of the
lifting cradle, but other numbers of chains may be used. These chains are led
over sheaves placed on an overhead turntable, which can be rotated by rams of
hydraulic cylinders acting on the table so as to turn the cradle with the truck into
proper position for tipping into the shoot.
Wagous may approach the hoist in any direction, but the turntable required
with an ordinary hoist to turn a truck into proper position for tipping is dispensed
with, as the truck can be turned by the overhead turutable whilst it is being
raised.
The tipping of the cradle and truck is performed by the ram of a hydraulic
cylinder acting on a loop of the back lifting chain or by several sets of such
cylinders and loops..
In order that the shoot which conducts the coal from the truck to the ship may
be brought near to the truck, the end of the shoot is made to slide out and in by
rams of hydraulic cylinders, the valve gear for these rams being so arranged in
relation to those for hoisting that the end of the shoot is always out of the way
when the cradle is raised or lowered.
The apparatus described is applicable to stationary hoists or to hoists that can be
moved along the quay to suit the position of the ship's hatches.
Dated this 14th day of December 1895.
ABEL & IMRAI,
Agents for the Applicants.
COMPLETE
Improvements in Hydraulic Coal Hoists.
We, WILLIAM CARTER, Engineer, of 32 King Street, Chester, and THE
HYDRAULIC ENGINEERING COMPANY LIMITED, of Charles Street, Chester,
Engineers, 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:-
The object of this invention is to facilitate the loading of ships with coal, by
means of hydraulic coal waggon tipping hoists, so arranged that the waggons are
run in from any direction on to a cradle which is lifted by chains or wire ropes
passing over sheaves to the lifting cylinders, these sheaves being mounted on an
: Price rid

page_text: overhead turn table which can be turned partly round so as to present the waggons
in the proper direction for tipping.
Fig. 1 of the accompanying drawing is an elevation of the upper and lower
parts of a hoist arranged to operate according to this invention, the turn table in
the upper part being shewn partly in section.
Fig. 2 shews a modification of the shoot.
The truck T being run in on the cradle C, the whole is hoisted by 4 ropes or
chains R attached to the 4 angles of the cradle and hauled by hydraulic crane
cylinders H. The 4 ropes or chains R pass down an opening in the centre of
a turntable A, on the underside of which are mounted sheaves S, under and
over which they pass, and thence down to the cradle C. Hydraulic crane
cylinders B are fixed in the upper part of the framing to work wire ropes or
chains which pass round a cylindrical part D of the turntable.
When the one of these is hauled the other being slacked out, the turntable
having the cradle and trunk suspended from it by the ropes or chains R is turned
partly round so as to bring the truck into position for tipping. This is effected,
as indicated by the dotted lines, by hauling the ropes or chains which are attached
to the rear angles of the cradle. The coals are thus delivered into the shoot E
down which they run to the vessel.
The upper end of the shoot E is made to slide so as to be out of the way of the
truck while it is being raised or lowered.
The sliding is preferably effected by hydraulic cylinders e arranged under the
sliding part.
Instead of making this part to slide it may be made to turn on hinges as shewn
in Fig. 2.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
1. In combination with a hydraulic coal hoist a turntable in its upper part with
guide sheaves for hoisting ropes or chains so arranged that the hoisted truck can
be turned to position for tipping, substantially as described.
2. Constructing the shoot from a hydraulic coal hoist with its upper part
moveable, substantially as and for the purpose set forth.
Dated this 14th day of September 1896.
ABEL & IMRAY,
Agents for the Applicants.