Improvements in Steam Winches for Working Derricks, and for other Hauling Operations.
Year: 1896

page_text: Date of Application, 21st May, 1896
Complete Specification Left, 19th Feb., 1897-Accepted, 1st May, 1897
Improvements in Steam Winches for Working Derricks, and for
other Hauling Operations.
I, ANDREW BETTS BROWN, of Rosebank Iron Works, Edinburgh, in the County
of Mid Lothian, North Britain, Engineer, do hereby declare the nature of this
invention to be as follows, that is to say :-
My said invention relates to apparatus of the kind described in my Patent
Specification, No. 5015 of 1895, and comprises improvements designed to facilitate
rapid handling of cargo without appreciable noise in the working of the machinery,
together with other practical advantages.
In the improved apparatus there are two winding drums which are above the
motor machinery, and on a horizontal shaft, one being fixed on the shaft and the
other loose thereon. The drums are turned independently of each other by
means of large worm wheels which are within a casing extending up from the
middle part of the motor machinery.
The motor machinery is within a base frame of an oblong rectangular form,
and comprises two separate engines which are duplicates of each other, and have
horizontal cylinders placed opposite each other at the ends of the frame. Each
pair of cylinders acts on cranks at the ends of a transverse horizontal shaft having
on it a worm gearing with the large worm wheel of the winding drum to be driven
by them. The distribution valves are of the piston class, and reversing is effected
by means of a controlling valve for each pair of cylinders the controlling valves
being of the kind used in steering engines, but having springs applied to them
which move either to its middle neutral position whenever a hand lever for acting
on it is let go.
It is intended to employ the improved machinery in working derricks of the kind
described in McKinlay's Patent Specification No. 16,416 of 1892; and provision
is made for automatically preventing the derrick from being topped too high or
from being slewed too far outboard. This provision consists of a screw spindle
moved on end by an internally screwed worm wheel turned by a worm on the crank
shaft, the spindle having on it an adjustable projection which acting on parts
connected to the controlling valve causes that valve to shut-off steam at the proper
times.
The base frame is a watertight box provided with a tightly fitting cover. The
working parts are thus encased so as to allow of copious lubrication which is
effected by means of an oil cylinder constantly replenished from the bottom of
the box by valveless pumps worked from the eccentric straps of the engines.
With the improved machinery herein before described only two hand levers are
required, and there is no link motion or other complex valve gear. The apparatus
is also economical in its use of steam.
Dated this Ninth 1000
EDMUND HUNT,
Applicant's Agent.

page_text: Improvements in Steam Winches for Working Derricks, and for
other Hauling Operations.
I, ANDREW BETTS BROWN, of Rosebank Iron Works, Edinburgh, in the County
of Mid Lothian, North Britain, 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, that is to say :-
My said invention relates to apparatus of the kind described in my Patent
Specification No. 5015 of 1895, and comprises improvements designed to facilitate
rapid handling of cargo without appreciable noise in the working of the machinery
together with other practial advantages.
In the apparatus (which is to be worked in combination with derricks of the kind
described in McKinlay's Patent Specification No. 16,416 of 1892) two winding
drums are independently driven by separate steam engine apparatus operating
through worm and wormwheel gearing, the engine apparatus being in the base
frame of the machine and encased and provided with lubricating apparatus as
hereinbefore described. The arrangements for the supply and distribution of
steam consist in the case of each engine of a controlling valve, of the kind used
in steering engines, moved by means of a hand lever. Prevention of overwinding
is effected by means of mechanism consisting of a screw spindle or equivalent
moved by the winding gearing and acting through intermediate parts on the
controlling valve.
And in order that my said invention and the manner of performing the same
may be properly understood I hereunto append three sheets of explanatory
drawings, to be hereinafter referred to, and showing an example of my improved
steam winches.
Figure, 1, on Sheet, 1, of the drawings is a longitudinal vertical section.
Figure, 2, on Sheet, 2, is a horizontal section.
Figure, 3, on Sheet, 3, is a transverse vertical section.
In these drawings the same reference letters and numerals are used to mark the
same or like parts wherever they are repeated.
In the improved apparatus there are two winding drums, A, and, B, which are
above the motor machinery, and on a horizontal shaft, C, carried in bearing
standards, D, one drum, B, being fixed and the other drum, A, loose on the shaft.
The drums, A, and B, are turned independently of each other by means of large
wormwheels, F, and G, which are within a casing, H, extending up from the
middle part of the motor machinery.
The motor machinery is within a base frame, J, of an oblong rectangular form,
and comprises two separate engines which are duplicates of each other, and have
horizontal cylinders, K, and L, placed opposite each other at the ends of the frame.
The cylinders, K, L, act on cranks, K 1, L1, at the ends of transverse horizontal
shafts, K2, L2, having on them worms, K 3, L3, gearing with the large worm-
wheels, F, G, of the winding drums, A, B, to be driven by them. The distribution
valves, are of the piston class and reversing is effected by means of a controlling
valve, R, for each pair of cylinders, the controlling valves being of the kind used
in steering engines, but having springs, S, applied to them which move either valve
to its middle or neutral position whenever a hand lever, T, for acting on it is
let go.
It is intended to employ the improved machinery in working derricks, and
provision is made for automatically preventing the derrick from being topped too
high or from being slewed too far outboard. This provision consists of a screw

page_text: spindle, V, moved on end by an internally screwed wormwheel piece, V 1, carried
in a bearing bracket, J 1, and turned by a worm, V 2, on the crank shaft, K 2, of
the topping engine. The spindle, V, has on it a projection, V 3, at its outer end,
which may be adjustable, and which acts on catches, V 4, on a link, V 5, connected
to a bellcrank, V 6, on a vertical shaft, V 7, operating by a lever, V 8, the
controlling valve, R. The bellcrank, V 6, is also connected to the starting lever, T.
During a movement of the topping engine, before the derrick is topped above or
slewed outboard beyond a predetermined point, the spindle, V, acts on one or
other of the catches, V 4, on the link, V 5, which acting on the controlling
valve, R, causes that valve to shut off steam at the proper time.
The base frame, J, is a watertight box provided with a tightly fitting cover, J 2.
The working parts are thus encased so as to allow of copious lubrication which is
effected by means of an oil cylinder or tank, W, constantly replenished from the
bottom of the box by valveless pumps, W 1, worked through belleranks, W 2, and
links, W 3, from the eccentric straps, W 4, of the engines.
With the improved machinery herein before described only two hand levers, T,
are required and there is no link motion or other complex valve gear. The
apparatus is also economical in its use of steam.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is :-
1. The combination of parts forming as a whole the improved steam winch
substantially as hereinbefore described and as shown in the accompanying
drawings.
2. The combination of two winding drums independently driven by separate
steam engine apparatus operating through worm and worm wheel gearing, the
engine apparatus being in the base frame of the machine and encased and
provided with lubricating apparatus substantially as hereinbefore described.
3. The arrangements for the supply and distribution of steam, consisting in the
case of each engine of a controlling valve moved by means of a hand lever
substantially as hereinbefore described.
4. The arrangement for preventing overwinding consisting of a screw spindle or
equivalent moved by the winding gearing and acting on the controlling valve
substantially as hereinbefore described.
Dated this Eighteenth day of February 1897.
EDMUND HUNT,
Applicant's Agent.