New and Improved Method of Working Steam Trawl Gear
Year: 1899

page_text: Date of Application, 4th Apr., 1899
Complete Specification Left, 8th Dec., 1899-Accepted, 3rd Feb., 1900
PROVISIONAL SPECIFICATION.
New and Improved Method of Working Steam Trawl Gear...
JAMES CUNNINGHAM, 96, Pitt Street, Bonnington, Leith, Engineer, do hereby
declare the nature of this invention to be as follows;-
To simplify the working of otter boards and trawl gear on steam fishing
vessels, in lieu of the ordinary system of one steam winch forward by placing a
drum or winch forward, and a drum or winch aft driven by an engine worked from
the wheel house or other convenient place, and connected by the necessary
shafting and gearing.
L
+1
1000
JAMES CUNNINGHAM, 96, Pitt Street, Bonnington, Leith, Engineer, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:-
This invention relates to improvements in steam trawl gear to be used by steam
and sailing fishing vessels and has for its object the providing of more efficient
means for sea fishing or trawling.
Hitherto steam winches have been placed in such a position as to necessitate the
rope used, for heaving in the trawl gear, being led over guide pulleys or rollers
to the winch.
In accordance with my improvements I place the steam winch with the drums
running fore and aft; this enables the winch to drive direct over the vessel's
side, thus greatly reducing the power necessary to heave in the wire rope of the
trawl gear, and also lengthening the life of the same and the winch used.
In order that my said invention may be more readily understood and easily carried
into effect I will proceed to describe the same with reference to the accompanying
drawings. Fig. 1, is an elevation and Fig. 2, is a plan of a steam trawl winch
applied to a fishing vessel and constructed in accordance with my said invention.
Referring to Figs. 1 & 2.
A, A, are the steam engines which work on to a first motion shaft B, which in
turn gears in to a second motion shaft C; on this second motion shaft the drums D,
D, may be fitted and used for working the vessel when in port or other purposes.
The second motion shaft C, gears in to the third motion or main shafts E, E,
which run fore and aft and in turn are geared with the winding drums F, F,
...מ
J

page_text: which are placed in line with the guide pulleys G, G, which lead the trawl rope
overside. On the second motion shaft C, clutches H, H, are introduced and by
this means the third motion or main shafts E, E, may be worked together or
independently and also thrown out of gear should it be desired to use drums D, D.
The various shafts may be driven with tooth, chain or friction gearing or the
like.
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:
The general arrangement, construction and combination of parts constituting
my improved method of working steam trawl gear, substantially as hereinbefore
described and shewn in the accompanying drawings.
Dated this 20th day of November 1800