IMPROVEMENTS IN STEAM WINCHES AND CRANES
Year: 1882

page_text: LETTERS PATENT to William Allan of Sunderland Engine Works South
Dock Sunderland for an Invention of "IMPROVEMENTS IN STEAM WINCHES
AND CRANES."
PROVISIONAL SPECIFICATION left by the said William Allan at the Office
of the Commissioners of Patents on the 13th November 1882.
WILLIAM ALLAN of Sunderland Engine Works South Dock Sunderland
"IMPROVEMENTS IN STEAM WINCHES AND CRANES
ל
In the construction of steam winches I employ a hollow cylinder or shell within
which the driving cylinders are placed. This shell, or more properly speaking,
outside case, has a flange on top and bottom; the bottom flange secured direct
to the deck of the ship, or on to a sole plate secured to the deck. The upper
flange of this protecting case has also a cover and above this cover is attached the
bearings for the crank shaft, and the cylinder supports. The The cylinders can be
either of the trunk or ordinary piston rod type, and for compactness I prefer fitting
the cylinders pendant from the cover; that is to say they are hung or attached to
the top cover of the outer shell. To the outer shell brackets are bolted for carrying
the chain barrel spindle. On the ends of the crank shaft the usual whipping drums
are attached, and on it are also fitted the single and double motion clutch pinions.
On the winch barrel I employ a wheel having external and internal teeth on its
periphery; the external teeth gearing with the crank shaft pinion and the internal
teeth gearing with the pinion on the intermediate shaft being thus applicable to
both heavy and light lifts. The reversing motion lever is fitted to the outside of
the outer shell. The throttle valve, and brake levers are conveniently arranged to
the outside of the shell. The steam and exhaust pipes enter either direct into, or
underneath the outer case. If the latter plan is adopted and the steam pipe kept
in the centre line of the shell, whilst the exhaust pipe is made with a short flexible
piece fitted between the exhaust flanges and the exhaust pipe proper the whole
winch can be turned round to suit an angular lift. To protect the crank shaft and
other gearing I attach a light wrought iron or brass hood on to the top cover; by
this arrangement the whole of the working parts of the engines and other gear
are protected from sea water and dust. This arrangement of winch is easily
applicable as a crane, the turning motion to the jib can be obtained by a fixed
segmental rack being attached to the sole plate, while the pinion gearing into it is
worked from the crank shaft by bevil wheels.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said William Allan in the Great Seal Patent Office on the 11th May
1883.
WILLIAM ALLAN of Sunderland Engine Works South Dock Sunderland
"IMPROVEMENTS IN STEAM WINCHES AND CRANES
"
In the construction of steam winches I employ a hollow cylinder or shell within
which the driving cylinders are placed. This shell or more properly speaking
outside case, has a flange on top and bottom the bottom flange is secured direct to
the deck of the ship or on to a sole plate secured to the deck. The upper flange of
this protecting case has also a cover and above this cover are attached the bearings
for the crank shaft and the cylinder supports. The cylinders can be either of the
trunk or ordinary piston rod type and for compactness I prefer fitting the cylinders.
pendant from the cover, that is to say they are hung or attached to the top cover
of the outer shell. To the outer shell brackets are bolted for carrying the chain
barrel spindle. On the ends of the crank shaft the usual whipping drums are
-attached-and_on_it_aro_also fitted the single and double motion clutch pinions. On
the winch barrel I employ a wheel having external and internal-teeth-on-its.
periphery, the external teeth gearing with the crank shaft pinion and the internal
teeth gearing with the pinion on the intermediate shaft being thus applicable to
both heavy and light lifts.
The reversing motion lever is fitted to the outside of the outer shell. The
throttle valve-and-brake-lever_are_conveniently_arranged to the outside of the
shell. The steam and exhaust pipes enter either direct into or underneath the outer
case, if the latter plan is adopted and the steam pipe kept in. the centre line of
the shell whilst the exhaust pipe is made with a short flexible piece fitted between
the exhaust flanges and the exhaust pipe proper, the whole winch can be turned
round to suit an angular lift. To protect the crank shaft and other gearing I
attach a light wrought iron or brass hood on to the top cover, by this arrangement
the whole of the working parts of the engines and other gear are protected from
sea water and dust.
This arrangement of winch is easily applicable as a crane the turning motion to
the jib can be obtained by a fixed segmental rack being attached to the sole plate
while the pinion gearing into it is worked from the crank shaft by bevil wheels.
And in order that my said Invention may be most fully understood and readily
carried into effect I will proceed to describe the Drawings hereunto annexed.
DESCRIPTION OF THE DRAWINGS.
The Drawings show various views of a steam winch constructed as above
described.
Figure 1 is a sectional side elevation showing the cylinders enclosed in the outer
case and the crank shaft and eccentrics protected by a hemispherical cover.
Figure 2 is a front elevation half of which is a section showing arrangement of
cylinders and mode of securing same within the outer casing.
Figure 3 is a plan showing the general arrangement of the crank shaft clutches
and gearing.
A. A. are steam cylinders, B is a steam chest cominon to both cylinders, C. C.
are stanchions hung from the cover of the outer case which carry the cylinders.
D is the crank shaft on which is placed the single and double gear clutch pinions
and the whipping drums E. S is the reversing lever of the engine. Fis a pinion

page_text: which gears into the external teeth of the large wheel G and gives motion, to the
chain barrel H for light lifts. J is a pinion which gears into wheel K and gives
motion to shaft on the end of which is a pinion L gearing into largo wheel
internally and giving motion to the chain barrel H for heavy lifts. I is a clutch
lever for shifting the clutches by which either the pinion For the pinion J may
be set fast with the crank shaft. M is a foot brake going round rim cast on large
wheel. N is the outer protection case, O is the cover which carries the crank shaft
and gearing and the stanchions which carry the cylinders. P is a crane jib which
may be supported by cover as shown. The jib may be stayed either by rods
attached to lugs cast on the case cover or guyed to the mast. Q is a steam cock
leading to cylinders through outer case. The exhaust can be led out to the outsido
of the casing in the same manner. R is a hemispherical hood or cover which
protects the crank shaft, eccentrics and gear from weather and dust, it can be
turned back on a hinge joint at R'.
Having thus described the nature of my said Invention and the manner of
performing the same I would have it understood that what I claim is :-
First. The construction of steam winches with the steam cylinders enclosed
within an outer casing whilst the crank shaft is above the top cover plate of this
casing and enclosed by a hood and at its ends geared to the barrel which is carried
by brackets on the outside of the casing substantially us described.
Second. The construction of steam winches and cranes substantially as herein
before described.
In witness whereof I the said William Allan have hereunto set my hand
and seal this ninth day of May in the year of our Lord One thousand
eight hundred and eighty three.