Improvements in Gin Wheels for Lifting and Discharging Cargo or Ballast.
Year: 1890

page_text: Date of Application, 14th Oct., 1590
Complete Specification Left 3rd June 1891-Accented. 18th July. 1891
PROVISIONAL, SPECIFICATION.
Improvements in Gin Wheels for Lifting and Discharging Cargo or
Ballast.
JOSEPH BRAILLI The Chestnuts Cardiff Ship Store Merchant do hereby
declare the nature of this invention to be as follows:-
A ship & steamship gin wheel or lifting apparatus to be made of wood iron steel
or other metal. Constructed with one large groove wheel, with one or two small
chain groove wheels on same spindle and frame. A rope or chain will be placed on
the large wheel which by pulling will easily revolve the smaller lifting wheels, on
which rope or chain will be placed.
The frame will be provided with the necessary hook and eyes to keep the
apparatus in a steady position.
COMPLETE SPECIFICATION.
Improvements in Gin Wheels for Lifting and Discharging Cargo or
Ballast.
1, JOSEPH BRAILLI, The Chestnuts, Cardiff, in the County of Glamorgan,
Ships' Store Merchant, 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 improvements in gin wheels such as are used for lifting
and discharging cargo or ballast; and consists in a novel combination with the
wheel, of chain or rope pulleys or barrels, the diameters of which latter may be
equal or different.
In order that my invention, and the means by which it is to be carried into
practical effect, may be thoroughly understood, I will now describe them in detail
referring in so doing to the accompanying drawings which are to be taken as part
of this Specification and read therewith."
Fig. 1 is a side elevation.
Fig. 2 is a front elevation.
Fig. 3 is a side elevation of a modified form of the invention.
Referring to Figs. 1 and 2, A is the gin-wheel; B. its frame; C, its suspension
hook; and D, the endless rope by which it is worked.
E is the axle. It has its bearings in the frame B as heretofore.
F, G are two pulleys, one on each side of the gin-wheel A. They, together with
the said wheel, are fast upon the axle E, so that they must move together. The
peripheries of both the chain pulleys are made with hollows of a proper contour to
receive, or otherwise engage with, link by link, and hold, after any well known
method, the respective lifting chain as it passes round them, so that it shall be
impossible for the chain to be pulled without revolving the gin-wheel through its
pulley. Each pulley has its own lifting chain H (but the same chain may be used
for either wheel as required) although only one is shewn, the said chain having a
lifting hook at each end.
Any other equivalent device may be substituted for this hook.
It will be noticed that the two chain pulleys are of different diameters, and these
dimensions are decided by considerations of the work to be done and the limits of
the weights to be lifted. Each chain pulley rotates within its own frame (, or g.)
ID 27

page_text: which carries eyes i at each end to which guy ropes are to be made fast for the
purpose of preventing the gin-wheel and its addenda swinging about.
Referring to Fig. 3, the chain pulleys F, G, of the construction above described
with reference to Figs. 1 and 2, are replaced by two barrels K, K', of equal
diameter. The shape of the frame B is modified accordingly, the suspension hook C
being consequently attached to it by sling chains c, c. Each of the barrels has a
separate lifting chain, or rope, made fast to it by one end in the well known way,
the opposite end terminating in a suitable lifting hook or equivalent device. The
said two chains are wound around their respective barrels in opposite directions, so
that as one is being wound up the other is being run down.
I am aware that it is not new to use barrels, as well as pulleys, differentiated in
respect of diameter, in lifting and hoisting gear, and I therefore make no general
claim thereto; but,
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is,
1. The combination with a gin wheel of a pulley or a barrel on each side, said
pulleys or barrels differentiated in respect of diameter, and together with the said
wheel adapted to rotate together as set forth.
2. The combination of gin-wheel and chain or rope barrel on each side thereof,
said barrels being of equal diameter and together with the gin wheel adapted to
rotate together, as set forth.
Dated this 30th day of May 1891.
PHILLIPS & LEIGH,
22, Southampton Buildings, Chancery Lane, Agents for the Applicant.