Improvements relating to Ships' Winches.
Year: 1895

page_text: Date of Application, 6th Mar., 1895
Complete Specification Left, 6th Dec., 1895-Accepted, 11th Jan., 1896
PROVISIONAL SPECIFICATION.
Improvements relating to Ships' Winches.
We ROBERT WELFORD of Hunters Hall Sunderland Engineer and PERRY
MITCHINSON of Percival Street Sunderland Engineer do hereby declare the
nature of this invention to be as follows:-
Our improvements consist in having one or more large clutch driven drums placed
on the barrel shaft on each side. Those drums can be worked independently of
each other and the clutches being taken out the lowering is done by brake gear.
We prefer to do away with the second shaft and spur gearing as in the ordinary
winch using only worm gear proportioned to give full warping power and quick
whipping on the large drums but in cases where preferred by others we use spur
gearing and also double purchase but without of course any drums on the second
shaft.
ROBERT WELFORD.
PERRY MITCHINSON.
Improvements relating to ships w
We ROBERT WELFORD of Hunters Hall Sunderland Engineer and PERRY
MITCHINSON of Percival Street Sunderland 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 :-
Our invention of Improvements relating to ships winches has for its main feature
the working of bulk and general cargoes by means of loose clutch driven large
drums (usually two on each side) placed on the barrel or main shaft whereby
important advantages can be obtained.
In order that our invention may be well understood we will give a description of
the parts of a ships winch which are used for doing work with their position on
winches as constructed up to the present time. These parts cousist of two whip
ends, two warp ends and one winding barrel and these are all placed on two shafts.
One shaft the quickest running has a whip end at each ond and the other shaft has
a warp end at each end with the winding barrel in the centre (of same shaft).
Now in our invention we practically substitute for the whip ends our special drums
but arranged (preferably two on each side) on the other shaft (or an extension of
same) and on which are also the warp ends (placed outside the special drums) and
winding barrel. It will be evident that we can easily alter or add to existing
winches so as to include our improvements and in constructing new winches
(especially for passenger steamers) with our improvements we prefer to do away
altogether with the shaft on which the ordinary whip ends are placed and instead
of spur gearing to use worm gear which renders the winch silent in working.
Having now described where our improvements come, we will give drawings and
description showing how the special drums alluded to as the main feature of our
invention aro constructed and found to work satisfactorily.

page_text: Sheet 1 Fig. 1 shows a front elevation of two drums, one in section & having a
coupling II on one side to connect to a barrel shaft say of a winch to be altered to
have our improvements. The warp end (not shown) going on the opposite side to
the coupling.
Sheet 2 Fig. 2 shows an end view of this drum arrangement.
A. are the drums.
B. is a bush (with for cach drum a parallel and cone surface) fixed to the
shaft.
B' is the clutch for driving load.
D is the lever with pins and sliding blocks moving clutch.
E. is a screw working in nut at other ond of lever.
F handle for turning sorow causing clutch (through lever) to nip drum A. between
said clutch and cone ou B.
C. is a brake with wood cleating for controlling lowering &c.
Gis a strong outside bracket for supporting outer end of main shaft and warp
end (not shown) and carrying fulcrum pin for lever, also brake weigh bar.
Gis an inner bracket for carrying fulcrum pin of lever D and other end of
brake bar. The holes in levers for fulcrum pins are made oval to allow for the
levers movement.
I Fig. 2 is where a tie and stay rod connects the two brackets and K is a collar
fastened with screws to keep drum in position.
Although the drawings and arrangements described are suitable for carrying out
our invention we desire it to be understood our invention is not necessarily practised
as constructed like these as other forms may be used but
Having now particularly described and ascertained the nature of our inven-
tion and in what manner the same is to be performed what we claim is :-
1. The combination of a ships winch having on each side on (or in connection
with the main or barrel shaft one or more (usually two) large clutch driven drums
which when disengaged are loose to revolve but which can be hold or controlled by
brake and arranged so that each drum can be worked independently of the others
substantially as described and shown.
2. The combination of a ships winch having said drums fitted, with main or
barrel shaft worked by worm and wheel (gear) substantially as described.
3. The drum arrangement forming (or relating to) ships winches for working
cargo substantially as described.
Dated this 5th day of December 1895.
ROBERT WELFORD.
PERRY MITCHINSON.