Improvements in Halliard Winches.
Year: 1892

page_text: Date of Application, 27th Apr., 1892
Complete Specification Left, 27th Jan., 1893-Accepted, 4th Mar., 1893;
PROVISIONAL SPECIFICATION.
Improvements in Halliard Winches.
I, JOHN WOTHERSPOON, of Rossbank, Forest Hill, Kent, Engineer, do horeby
declare the nature of the said invention to be as follows:-
This invention relates to an improved arrangement of apparatus designed for use
as a halliard-winch for hoisting and lowering yards and sails.
In carrying out the invention, I arrange two opposite standards on a suitable
base-plate intended to be secured to the mast, bulwarks or other convenient part of
the vessel; or such standards may be directly secured to the mast or other con-
venient part of the vessel in the desired relative positions. The standards are
fitted with bushings which are adapted to serve as bearings to two parallel screw
shafts which connect the opposite standards, and to receive two parallel guide rods
which also connect the opposite standards and act as stays thereto and are secured
by screw nuts or other suitable means.
Each of said screwed shafts is adapted to rotate in said bearings, and between such
bearings is screw-threaded for nearly the whole of its length, the half end-parts
being respectively right- and left-hand screw-threaded.
On the end of each screwed shaft projecting through the standard at one end of
the winch, is keyed or otherwise secured a worm-wheel, with the adjacent edges of
the pair of which wheels there cngages a worm-shaft disposed at right angles to the
axes of said screwed shafts, carried by bearings bolted to the adjacent standard
and adapted with a handle or handles for operating the same.
In consequence of such arrangement, the two screwed shafts are caused to rotate
in reverse directions on the worm-shaft being rotated.
The two screwed shafts are disposed with the right-hand screw-threaded portion
of one opposite the left-hand screw-threaded portion of the other, so as (on their
being rotated in reverse directions by the operation of said worm shaft and con-
necting worm wheels) both to be adapted to impart endway motion in the same
direction to two opposite carrying nuts, which respectively engage with the screwed
shafts (by which they are actuated,) and with said guide stay bars, (by which they
are prevented from turning about and are caused to traverse in the direction of the
axes of the screwed shafts,) and mutually support a connecting axle on which are
mounted any required number of independent and freely turning grooved sheaves
or pulleys.
A like arrangement of carrying nuts, connecting axle and supported sheaves is
adapted at each of the oppositely screwed ends of the apparatus; the two arrange-
ments being connected by a wire or other suitable flexible halliard made fast at one
end to some convenient part of the apparatus, passed successively around the outer
half peripheries of all of said sheaves or pulleys and led to a sheave or pulley
block supported at a convenient part of the mast, and descending thence to the yard
or sail to be hoisted and lowered.
The whole apparatus co-acts in such manner that on the worm-shaft being
turned, both said sheave-carrying arrangements are caused to be brought towards
each other or separated apart, according to the direction of motion imparted to the
worm-shaft, letting out or taking up the halliard and lowering or hoisting the yard
or sail as the case may be.
In consequence of the double action of the parts, and of the operation of the said
series of connected sheaves or pulleys, I obtain a powerful action enabling one or
two men to do the required work, and a sufficiently speedy take-up or let-out of
the halliard upon a slow motion being imparted to the worm-shaft.
The improved apparatus is self-locking and so may be left unattended at. any

page_text: moment, and occupies but a small space, and is possessed of many practical advan-
tages over the means in present use for effecting its object.
In modified arrangements of the apparatus, one set of sheaves may be fixed in
lieu of both being moveable as aforesaid, and one screwed shaft may be used in lien
of two parallel screwed shafts as aforesaid :-and where one set of sheaves is fixed
the screwed shafts or shaft would not be oppositely threaded at their or its opposite
ends-but the arrangement hereinbefore firstly described is preferred.
Dated this 27th day of April 1892.
DAY, DAVIES & HUNT,
321, High Holborn, London, W.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Halliard Winches.
1, JOHN WOTHERSPOON, of Rossbank, Forest Hill, Kent, Engineer, do hereby
declare the nature of the said invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:
This invention relates to an improved arrangement of apparatus designed for
use as a halliard winch for hoisting and lowering yards and sails, and for other
analogous uses.
The improved winch is illustrated on the accompanying drawings in which ;-
Fig. 1, represents a side clevation.
Fig. 2, represents an end elevation partly in section: --and
Fig. 3, represents a transverse section through a, b, Fig. 1.
Like reference numerals indicate like parts wherever they are repeated on the
drawings.
6, represents two opposite standards which may be bolted to a base or sole-plate
intended to be secured to the mast bulwarks or other convenient part of the vessel;
or such standards may be directly secured to the mast or other convenient part
of the vessel in the desired relative positions. The standards are fitted with
bushings 7, which are adapted to serve as bearings for two parallel screwed
shafts 8, which connect the opposite standards, and to receive two parallel guide
rods 9, which also connect the opposite standards and act as stays thereto and are
secured by screw nuts 10, or other suitable means.
Each of the screwed shafts 8, is adapted to rotate in the bearings 7, and between
such bearings is screw-threaded for nearly the whole of its length, the half end
parts being respectively right and left-hand screw threaded, vide Fig. 1.
The end of each screwed shaft projects through the standard at one end of the
winch and has there keyed or otherwise secured thereon, a worm-wheel 11, with
the adjacent edges of the pair of which wheels there engages a worm-shaft 12,
which is disposed at right angles to the axes of said screwed shafts, carried by
bearings 13, bolted to or projecting from the adjacent standard and is adapted with
a handle or handles 14, for operating the same.
In consequence of such arrangement, the two screwed shafts 8, are caused to
rotate in reverse directions on the worm-shaft being rotated.
The two screwed shafts are disposed with the right-hand screw-threaded portion
of one opposite the left-hand screw-threaded portion of the other, vide Fig. 1, so as
(on their being rotated in reverse directions by the operation of said wormed shaft
and connecting worm wheels) both to be adapted to impart endway motion in the
same direction to two opposite carrying nuts 15, which respectively engage with
the screwed shafts (by which they are actuated,) and with said guide and stay
bars 9, (by which they are prevented from turning about and are caused to traverse
in the direction of the axes of the screwed shafts) and mutually support a con-
necting axle 16, on which are mounted any required number of independent and
freely turning grooved sheaves or pulleys 17.

page_text: A like arrangement of carrying nuts, connecting axle and supported sheaves is
adapted at each of the oppositely screwed ends of the apparatus, vide Fig. 1, the
two arrangements being connected by a wire or other suitable flexible halliard 18,
made fast at one end to some convenient part of the apparatus, passed successively
around the outer half peripheries of all of said sheaves or pulleys and led to a
sheave or pulley-block supported at a convenient part of the mast, and descending
thence to the yard or sail to be hoisted and lowered.
The whole apparatus co-acts in such manner that on the worm-shaft being
turned, both said sheave-carrying arrangements are caused to be brought towards
each other or separated apart, according to the direction of motion imparted to the
worm-shaft, thus letting out or taking up the halliard and lowering or hoisting the
yard or sail as the case may be.
In consequence of the double action of the parts and of the operation of the said
series of mounted sheaves or pulleys, I obtain a powerful action enabling one or
two men to do the required work, and a sufficiently speedy take-up or let-out of the
halliard upon a slow motion being imparted to the worm-shaft.
The improved apparatus is self-locking and so may be left unattended at any
moment, and occupies but a small space, and is possessed of many practical advan-
tages over the means in present use for effecting its object.
The aforesaid apparatus may be modified by using one screwed shaft 8, in lieu of
two thereof as aforesaid, or by causing one of the sets of sheaves 17, to occupy a
fixed position in lieu of both thereof being movable as aforesaid, in such latter case
the screwed shaft or shafts would not be oppositely threaded at their or its opposite
ends.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
:-
The hereinbefore described improved arrangement of halliard winch.
DAY, DAVIES & HUNT,
321, High Holborn, London, W.C., Agents for the Applicant.