Improvements in Apparatus Used for Holding and Turning Ingots and other Masses of Metal:
Year: 1888

page_text: Date of Application, 30th Oct., 1888
Complete Specification Left. 30th July, 1889-Accepted. 7th Sept.. 1889
PROVISIONAL SPECIFICATION.
Improvements in Apparatus Used for Holding and Turning Ingots
and other Masses of Metal:
I, THOMAS KIRBY CAVILL Firs Hill Road, Sheffield in the County of York,
Engineer do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in apparatus for turning ingots of steel,
or other masses of steel or iron when being heated in the furnace or operated upon
by a steam Hammer, or otherwise dealt with; and it refers more particularly to the
means for turning round the ingot or other form of metal in either direction, and the
method by which the driving chain accomodates its length to the alteration in
height of the ingot when raised or lowered by the Crane.
In applying my invention to an apparatus which is suspended from the lifting
hook of a Travelling Crane or other Crane, and consisting of a suitable framework
carrying a flanged pulley, and loop chain, in which the ingot is supported, and which
may be caused to revolve by means of a worm wheel fixed upon the axle of the
flanged pulley, and a corresponding worm geared into it and driven by an endless
chain, I proceed as follows:-
I connect with the driving mechanism of the Crane an endless chain or rope which
passes over pulleys upon the travelling carriage (or that part from which depends the
Crane chain carrying the apparatus) it then descends, and passes under and partly
round the chain pulley fixed on the worm shaft, ascends to the travelling carriage
again eventually forming a hanging loop to receive a balance weight, and returns to
the driving mechanism of the crane. propose to arrange for the balance weight to
slide between uprights, and to be provided with a double catch or pawl that can be
worked by the crane attendant.
This double catch is arranged so that either end can be readily thrown into gear
with a vertical rack when desired, one movement of the catch is to prevent the weight
being drawn up, and the opposite movement is to prevent it descending.
This catch may be worked by any suitable mechanical appliance, such as for
example a series of light shafts both vertical and horizontal connected by bevil
wheels so arranged that either end of the catch may be put into gear with the rack
or withdrawn at any moment by the crane attendant.
The balance weight keeps the driving chain taut and firmly held against the chain
pulley, at whatever height the said apparatus may be placed.
When it is desired to release the driving chain from the pulley, the catch is put
into gear with the rack, and by raising the apparatus the chain can be released.
To prevent an unequally balanced ingot, or other unequally shaped block of metal,
lifting the balance weight (by its tendency to fall over), the other end of the catch
is thrown into gear with the rack, which then effectually prevents the weight being
drawn upwards.
Dated the 27th day of October 1888
COMPLETE SPECIFICATION.
Improvements in Apparatus Used for Holding and Turning Ingots
and other Masses of Metal.
I, THOMAS KIRBY CAVILL, Firs Hill Road, Sheffield, in the County of York,
Engineer, do hereby declare the nature of this invention and in what manner the
to be performed, to be particularly described and ascertained in and by the
following statement :-
saine
This invention relates to improvements in apparatus for turning ingots of steel, or

page_text: other like heavy masses of steel, or iron, when being heated in the furnace, or being
operated upon by steam hammers, Presses or otherwise; the object being to enable
the ingot, shaft or other mass of metal to be revolved in either direction while being
moved vertically, or horizontally, or while it is stationary.
The annexed sheet of drawings gives an illustration how my invention may be 5
carried into effect. Details which have not been particularly described inay be of any
suitable description.
:
In applying my invention to an apparatus suspended from the hoisting block of an
overhead crane or Traveller as indicated in the drawings, in which A is the crane,
and B is the hoisting block, which is operated in the usual manner of Cranes.
The sling chain in which the ingot, shaft or other object is held is marked C, and
may be supported in the usual way upon a flanged pulley D, and revolved in either
direction by any suitable gear such as a pinion and wheel, bevel wheels, or a worm E,
and worm-wheel F', as shown..
On the shaft of the worm E, or other first movement, a chain pulley G is fixed to
engage with a loop of an endless chain H; this chain in its general arrangement
and operation constitutes the chief part of my invention, by its aid the flanged
pulley D is turned in either direction, and it also automatically adjusts itself to the
length of loop required as the hoisting block is either raised or lowered.
The chain (or wire rope if preferred) passes round a pulley or pulleys such as
shown at I, which is made to revolve in either direction by the engine or other
mechanism of the crane, in the drawing I have shown it fixed upon a vertical shaft J,
which would pass down to and be worked by the Engine.
The chain or rope then passes forward to the travelling crab A, (or crane) and
passing over pulley K, returns to pulley L, forming the loop before mentioned as
encircling the pulley G. It then passes to the pulley M, forming another loop and
supporting the compensating weight N.
This weight N is to. take up any slack chain, and to keep the loop tight up to and
in gear with the chain pulley G; the chain then returns off the companion pulley
to M direct to the driving pulley I, thus completing its circuit.
the
I propose to arrange compensating weight to slide vertically between or upon
supports O, and to be provided with a double catch P, that can be readily thrown either
in or out of gear with a rack Q when desired; one movement of the catch P, is to
prevent the weight being drawn up, and the opposite movement is to prevent it
descending, this latter movement allows the loop to be removed from the pulley G when
desired.
The catch should be under the control of the crane attendant, this may readily be
effected by series of light shafts connected at the angles by bevel wheels, or equivalent
means.
If an ingot or forging of unequal shape would thereby be likely to fall over and
lift the balance weight suddenly causing a sudden strain, the catch P would be
thrown into gear to prevent this occurring and thus tend to prevent accidents.
.
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
claim is :-
In apparatus for supporting and turning Ingots, shafts, and other like masses o
"endless chai
metal while being heated or otherwise operated upon; the use of an
or wire rope for actuating the turning gear, in combination with a thereupo
suspended weight, for the purpose specified, and substantially as hereinbefore describe
and shown.
Dated the 27th day of
ROBT. F. DRURY,
George Street, Sheffield, Agent for the Applicant.