Improvements in Apparatus for Use with Cranes and Hoists for Seizing and Moving Heavy Weights.
Year: 1888

page_text: Date of Application, 14th Dec., 1883
Complete Specification Left, 16th Sept., 1889-Accepted, 19th Oct., 1889
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Use with Cranes and Hoists for
Seizing and Moving Heavy Weights.
I, JOHN WILLIAM WAILES, of The Cedars Bescot, in the County of Stafford,
Engineer, do hereby declare the nature of this invention to be as follows:-
The object is to provide for use with cranes and hoists apparatus for readily taking
hold of and releasing heavy weights such as blooms, ingots, sheets, and plates of
metal.
Apparatus under my invention consists essentially of a cylinder or chamber
provided with a piston or plunger and fitted with a jointing piece and a releasing
valve.
The chamber is preferably cylindrical and is formed at one end with a shoe to
which is fitted a jointing piece of india rubber or suitable material. The face of
the shoe and jointing piece is shaped so as to fit to and make contact with the
weight to he lifted. The piston or plunger fits air tight within the cylinder and
is preferably packed with cup leathers a suitable liquid being maintained in the
cylinder above the piston or plunger to prevent leakage of air past the said piston
or plunger and the said piston or plunger is provided with an eye hook or shackle
for coupling the hoisting chain or rope. The valve is attached to any convenient
part of the cylinder piston or plunger and is arranged to open or close a passage
leading from the atmosphere to the interior of the cylinder below the piston.
When in use the apparatus is coupled to the hoisting chain or rope of a crane
derrick or equivalent device and is lowered until the shoe and jointing ring rests
on the weight to he lifted the valve being open so that the piston or plunger falls
to the bottom of the cylinder: the valve is then closed and the crane or hoist set
in motion so as to raise the piston or plunger. Tho said piston or plunger rises
in the cylinder and a vacuum is made beneath it which causes the weight to adhere
to the shoe. The weight is then moved and deposited in the required position by
hauling on the piston or plunger.
Dated this 12th day of December 188e
Per pro J. T. KING,
J. Johnson, Agent.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Use with Cranes and Hoists for
Seizing and Moving Heavy Weights.
1, JOHN WILLIAM WAILES of The Cedars Bescot in the County of Stafford,
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 :-
The object is to provide for use with cranes and hoists apparatus for readily taking
hold of and releasing heavy weights such as blooms ingots sheets and plates of metal.
Apparatus under my invention consists essentially of a cylinder or chamber
provided with a piston or plunger and fitted with a jointing piece and releasing
valve.
The chamber is preferably cylindrical and is formed at one end with a shoe to which
is fitted a jointing piece of india rubber or suitable material. The face of the shoe and
jointing piece is shaped so as to fit to and make contact with the weight to be lifted.
The piston or plunger fits air tight within the cylinder and is preferably packed with
cup feathers a suitable liquid being maintained in the cylinder above the piston or
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page_text: plunger to prevent leakage of air past the said piston or plunger and the said piston
or plunger is provided with an eye hook or shackle for coupling the hoisting chain or
rope. The valve is attached to any convenient part of the oylinder piston or plunger
and is arranged to open or close a passage leading from the atmosphere to the interior
of the cylinder below the piston.
In order that my invention may be readily understood I have appended a drawing
illustrative thereof. a is a cylinder or chamber formed at the lower end with a shoe
or flange to which is fitted a jointing piece e of india rubber asbestos or other
suitable material-d is a piston fitting within the chamber a and packed with a cup
leather d¹. e piston rod, shackle, y packing at the top of the cylinder to maintain
the piston rod central, space round piston rod containing some liquid to prevent air
from leaking past the piston, i valve closing a passage; loading from the atmosphere
to the lower part of the apparatus below the piston, & spring for keeping the valve
closed, lover for opening the valve.
When in use the apparatus is coupled to the hoisting chain or rope of a crane
derrick or equivalent device and is lowered until the shoe and jointing ring rests on
the weight to be lifted the valve being open so that the piston or plunger falls to the
bottom of the cylinder; the valve is then closed and the crano or hoist set in motion
so as to raise the piston or plunger. The said piston or plunger rises in the cylinder
and a vacuum is made beneath it which causes the weight to adhere to the shoc. The
weight is then moved and deposited in the required position by hauling on the piston
or plunger.
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 :-
The combination of a cylinder or chamber piston or plunger, jointing piece and
valve substantially in the manner and for the purpose set forth.
Dated this Thirteenth day of September 1889.
J. T. KING,
Agent for the Applicant.