An Improvement in Crabs, Capstans, Winches, and other Hauling Machines.
Year: 1885

page_text: An Improvement in Crabs, Capstans, Winches, and other Hauling
Machines.
I, ROBERT JAMES RUDD, of 1 Uxbridge Terrace, Sydenham Road, Croydon in
the County of Surrey, Engineer, do hereby declare the nature of my invention
for "AN IMPROVEMENT IN CRABS, CAPSTANS, WINCHES AND OTHER' HAULING
MACHINES" to be as follows:-
My invention relates to apparatus applicable to crabs, capstans, winches and
other hauling machines for the purpose of preventing the convolutions of the.rope
or chain as they are wound on the barrel from over riding or interfering with one
another, and also for enabling a barrel of moderate length to wind an indefinite
length of rope or chain. For this purpose I mount, on an axis slightly inclined, to
the axis of the barrel, a second barrel and I lead the rope or chain over both these
barrels. Owing to the inclination thus given to each convolution the rope or chain
leads on to the barrels without over riding and without travelling helically along
them. In order to reduce strain and friction on the bearings of the barrels, I prefer
to provide on them, discs which roll against each other when the rope or chain is
crossed from barrel to barrel or which roll on intermediate discs when the rope or
chain passes from barrel to barrel without crossing.

page_text: COMPLETE SPECIFICATION.
An Improvement in Crabs, Capstans, Winches, and other Hauling
Machines.
1. T
I, ROBERT JAMES RUDD of N° 1 Uxbridge Terrace, Sydenham Road, Croydon
in the County of Surrey, 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 :-
My invention relates to apparatus applicable to crabs, capstans, winches and
other hauling machines for the purpose of preventing the convolutions of the
rope or chain as they are wound on the barrel from over riding or interfering with
one another, and also for enabling a barrel of moderate length to wind an indefinite
length of rope or chain. For this purpose I mount on an, axis slightly inclined to
the axis of the barrel, a second barrel and I lead the rope or chain over both these
barrels. Owing to the inclination thus given to each convolution the rope or chain
leads on to the barrels without over riding and without travelling helically along
them. In order to reduce strain and friction on the bearings of the barrels, I prefer
to provide on them, discs which roll against each other when the rope or chain is
crossed from barrel to barrel or which roll on intermediate discs when the rope or
chain passes from barrel to barrel without crossing.
Figs. 1 and 2 of the accompanying drawings are respectively diagrammatic end
and side views shewing an arrangement of barrels according to my invention for
taking a rope or chain without crossing. A is the main barrel of the winch or
other hauling machine; and B is the second or guide barrel, which is mounted with
its axis inclined to that of the main barrel, causing the rope R to wind with a
number of convolutions that are clear of each other and that do not travel along
the barrel but are confined within a limited length of it. Figs. 3 and 4 shew
diagrammatically the arrangement with a crossing rope or chain. In this case, as
the barrels A and B revolve in opposite directions, the strain' on the bearings' of
their axes may be relieved by providing, at each end, discs a, b, a¹, b¹, rolling on
each other, the diameters of these discs having to one another a ratio suited to their
relative speeds of rotation. When the rope or chain is wound without crossing as
shewn in Figs. 1 and 2, the two barrels then revolving in the same direction, the
strain on their axes bearings may be relieved, as shewn diagrammatically in Fig. 5,
by interposing a separately mounted bevilled disc D or a bevil ended spindle E.
Fig. 6 is a side view, Fig. 7 is a transverse section and Fig. 8 a plan shewing how
my invention can be applied to an ordinary winch or crab. In this case the guide
barrel B is relieved from strain on its axle by interposition of the bevil ended
spindle E between it and the main barrel A. It is convenient to mount the guide
barrel B in such a way that it can be shifted lengthwise, angled in the one direction
or the other, or turned quite away when it is not required: For this purpose it
and the spindle E are carried on a bracket F which is pivotted so that it can partly
turn at G and is carried on a frame H that can turn on and slide along one of the.
lower stay bolts. As a convenient method of winding a number of convolutions

page_text: of the chain or rope on the barrel I make one of the bearings of the barrel axis so
that it can be turned round within the framing by means of a handle K. This
revolving bearing is made with a notch L large enough to pass through it a loop of
the rope or chain, as indicated by the dotted lines M. By passing a loop through
then turning the bearing round the loop is brought within the frame embracing the
axis and can be passed on to the barrel. And thus a number of loops can be dealt
with successively, one for every convolution that is desired to be put on the barrel.
As the guide barrel has to be inclined to the main barrel in one direction when the
rope or chain travels one way and has to be inclined in the other direction when
the rope or chain travels the other way, the joint at G is made with a slotted hole
at N allowing sufficient movement for the guide barrel to take either of the two
inclinations. This change of inclination may be effected as shewn in Fig. 9 which
is a side view, Fig. 10 which is an end view and Fig. 11 which is a plan of a crab
or winch in which the guide barrel B and the bevil ended spindles E interposed
between it and the main barrel are mounted on arms H attached to two opposite
cranks P on a spindle that can be turned round. In one attitude of the cranks the
guide barrel has the inclination suited to the travel of the rope or chain in the one
direction; in the opposite attitude of the cranks, the guide barrel has the inclination
suited for the travel of the rope or chain in the opposite direction.
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
In combination with the barrel of a crab, capstan, winch or other hauling
machine, a second or guide barrel mounted on an axis slightly inclined to that
of the main barrel, substantially as and for the purposes herein set forth.
1
T
2000
ABEL & IMRAY,
Agents for the Applicant.