Improved 'Gangways for Steam Trawlers.
Year: 1895

page_text: Date of Application, 21st Oct., 1895
Complete Specification Left, 11th July, 1896-Accepted, 12th Sept., 1896
Improved 'Gangways for Steam Trawlers.
We, WALTER JAMES WOOD Engineer, of 10 Hainton Avenue, Grimsby, and
JOHN JAMES DAWSON Engineer 25 Rutland Street Grimsby do hereby declare
the nature of this invention to be as follows :-
"
Our invention has for its objects,-the saving of the wire warps or bridles
attached to the trawl gear of steam trawlers from undue chafe when "shooting
or “hauling” in the gear at sen; and the prevention of damage or fracture of
the gangway frame and rollers when working the vessels through crowded docks.
For the purpose of carrying out these objects, we construct 'our gangway.
7.frame
in such a manner that the rollers over which the warp runs, project outside the
bulwarks of the ship, thus carrying the warp or bridles well clear of the ship's-side,
so that the said warp or bridles will not rub over any fixed surface such as beading
or plating of the ship's hull. Also, we do not bolt or rivet our gangway frame
permanently to the bulwarks, but hang it by a suitable hinge or binges so that it
can be swung inboard when the operation of fishing or “hauling the genr is
finished. By this means the ship's side will be loft clear, without any part of the
gangway projecting outside the hulwarks, thus making it impossible for the
gangway frame or its rollers to be in any way damaged by colliding with other
vessels or qunyways in the operation of docking.
"
We e now come to the special features in the construction of our gangways. We
may make the frame of wrought iron, east iron, malleable iron or steel, of any
convenient size and rectangular in shape. It will carry a suitable arrangement of
iron or steel rollers, say, two vertical rollers and one horizontal, or two vertical
'and two horizontal rollers, or two diagonal and one horizontal roller: but, whatever
arrangement of rollers we adapt, they must be so fitted in the frame that they
project outside the ship sufficiently to carry the warp clear of the ship's side when
the frame is in position for working, so as to prevent any chafe over the ship¾
pluting as before mentioned.
We shall attach our frame to the bulwarks of the vessel by a suitable hinge or
joint either at the forward or after side, and the opposite side of the frame we
shall lock to the bulwarks, when'in position for working, by an arrangement of
bolts and thumbnuts'; or, by means of cotters or forelocks passing through lugs
projecting from the bulwarks through corresponding holes in the flange of the
gangway frame. Or we may attach the frame to the bulwarks by a similar hinge
on the under side of it. These methods of binging our gangway frame to the
bulwarks permit of its being'swung inhoard when not in use and the ship's side
being left perfectly clear without any projecting parts of the frame or rollers
exposed to danger of injury from other vessels or quay walls.

page_text: COMPLETE SPECIFICATION.
Improved Gangways for Steam Trawlers.
We, WALTER James Wood, Engineer, of 10 Hainton Avenue, Gt. Grimsby,
and JOHN JAMES DAWSON Engineer of 6 Sussex Terrace New Cleethorpes
Gt. Grimsby do hereby declare the naturo of this invention and in what manuer
the same is to be performed, to be particularly described and ascertained in and
by the following statement :-
"
Our invention relates to improvements in the construction of gangways through
which the wire towing warps of steam fishing vessels pass when "shooting or
"hauling" the trawl nets. It has for its objects (1) the prolongation of the "life"
of the said warps; and (2) the prevention of damage to the gangway frame and
its rollers through collision with other vessols and quay ways in crowded docks.
In order to carry out the above objects we so place the rollers in our gangway
frame that the wire ropes in running over them do not chafe un any fixed surface
Buch as beading or plating of the vessel's hull. Also, in order to prevent injury to
the gangway frame itself, wo do not bolt or rivet it permanently to the bulwarks of
the ship, but hang it by a suitable bingo and lock it by means of suitable bolts or
other arrangement temporarily in position while it is being used. By this means
it may be easily disconnected and swung inboard on its hinge when the operation
of fishing is completed, thus rendering it absolutely free from danger of injury by
objects outside, such as the projecting parts of other vessels and quayways,
The accompanying drawings shew the special features and improvements we
have adopted in the construction of our gangway frames :-
Figures 1 and 4 are back elevations shewing two kinds of the frames F in position
fixed to the bulwarks D.
Figures 2 and 5 are sido elevations of the same frames F shewing the bulwarks D
in section.
In
Figures 3 and 6 shew the same frames F swung inboard when not in use.
the case of Fig. 3 the frame F is lowered or swung downwards by means of its.
bingo A on to the wooden chock E fixed on the deck G; and in the case of Fig. 6
the frame F is swung inboard sideways on its hinge A (Fig. 5).
We may construct our frames of any suitable metal or metals, of auy convenient
size and rectangular in shape. They will carry iron or steel rollers C, C, and H
running freely on spindles fixed in the frame, or the spindles may be fixed in the
rollers by keys or other means, and revolve in sockets at each end of the said
spindles. We may fit two such rollers horizontally and two vertically; or one
horizontally and two vertically, as in the accompanying drawings at C, C, and H ;
or two diagonally and one horizontally but whatever system of rollers we may
adopt, they must be so fitted in the frames F, that, the principal rollers over which
the warps run project well beyond the ship's bulwarks D as shewu at C in Figs. 2
and 5, to prevent chafing over the ship's plating.
We attach our frame F to the bulwarks D by a hinge or joint on one side of it
as in Figs. 4, 5 and 6 at A, and the opposite side of the frame wo look to the
bulwarks when in position for working by an arrangement of bolts and thumb-
nuts B. B. Fig. 4, or by other meaus. Or, we may attach the frame to the
bulwarks by a similar hinge on the under side of it as in Figs. 1 2 and 3 at A, and
lock it in position by a suitable arrangement at the top of the frame as showu at
BB Fig. 1. By this method of fixing the frame to the bulwarks it may be swung
inboard as in Figures 3 and 6.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
1. The adoption of a system of rollers in the gangway frame which project

page_text: sufficiently beyond the level of the ship's plating substantially as and for the
purpose hereinbefore described and represented in Figs. 2 and 6 at CC of the
accompanying drawings.
2. The construction of a gangway frame with a hinge on any side of it substantially
as and for the purpose hereinbefore described and represented in Figs. 3 and 6 of
the accompanying drawings.
DL: 10th 1 T.1-1900
WALTER JAMES WOOD,
JOHN JAMES DAWSON,
Applicants.