A Triple Centre Sheave Fairlead for Steam Fishing Trawler Double Barrel Winch.
Year: 1897

page_text: Date of Application, 27th Aug., 1897
Complete Specification Left. 13th Sept.. 1897-Accepted. 19th Mar., 1898
PROVISIONAL SPECIFICATION.
A Triple Centre Sheave Fairlead for Steam Fishing Trawler Double
Barrel Winch.
THOMAS ATKINSON, 13, Thorold Street, Grimsby, do hereby declare the nature
of this invention to be as follows:-
The otter trawl requires two wire ropes to coil on a double barrel winch. The
invention is to guide the ropes into the centre of the winch barrels when fishing
on either side of the ship.
The invention consists of three sheaves, or bollards arranged triangular, the
diameter of the centre sheave or bollard equals the distance from centre to centre
of the winch barrels.
The inside edge of the two outside sheaves or bollards, lead direct in a line with
the centre of winch barrels. The whole of the sheaves or bollards revolve on up-
right spindles, secured to a cast iron foundation.
There is nothing special about the sheaves or bollards. It is the triangular
position of the same I wish to protect.
Dated this 30th day of September 1897.
A Triple Centre Sheave Fairlead for Steam Fishing Trawler Double
Barrel Winch.
THOMAS ATKINSON, 13, Thorold Street, Grimsby, Marine 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:-
The otter trawl requires two wire ropes to coil on a double barrel winch.
The invention is to guide the ropes into the centre of the winch barrels, when
fishing on either sides of the ship.
The invention consists of three sheaves, or bollards, arranged as a triangle.
The diameter of the centre sheave, or bollard, equals the distance from centre to
centre of winch barrels.
The inside edge of the two outside sheaves, or bollards lead direct into the centre
of the winch barrels.
The whole of the sheaves, or bollards, revolve on upright spindles, secured to a
cast iron foundation, or to separate foundations, to suit the deck fittings hatch-
way combings, and fish boards.
In the explanatory drawings
13: 1

page_text: Fig. 2 represents a plan with ropes on.
Fig. 3 represents the winch barrels.
The component parts
Three A's represents three upright spindles.
Three Bs represent three sheaves or bollards.
Three C's represents the foundations.
Three Ds represents three protectious guards or caps.
Two Es represents the winch barrels.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed I declare that what I
claim is:-
1. The triangular arrangement of three sheaves or bollards, revolving on one
or on separate foundations, to guide two ropes into the centre of the barrels of
a winch, that winds in two ropes at the same time on either sides of the ship.
Dated this 11th day of September 1897.
Three Ds represents three protectious guards or caps.
Two Es represents the winch barrels.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed I declare that what !
claim is:
1. The triangular arrangement of three sheaves or bollards, revolving on one
or on separate foundations, to guide two ropes into the centre of the barrels of
a winch, that winds in two ropes at the same time on either sides of the ship.
Dated this 11th day of September 1897.
THOMAS ATKINSON.