Improvements in Davits for Use with Hauling In and Hoisting Gear for Working Trawl and Otter-net Boards.
Year: 1895

page_text: Date of Application, 8th Oct., 1895
Complete Specification Left, 7th May, 1896-Accepted, 19th Sept., 1896
IIWY INTONAU
Improvements in Davits for Use with Hauling In and Hoisting Gear
for Working Trawl and Otter-net Boards.
GEORGE LOWE ALWARD of 11 Hainton Street Great Grimsby in the County
of Lincoln Fishing Vessel Owner and Commission Agent do hereby declare the
nature of this invention to be as follows :-
My invention relates to davits used for working trawl and otter net boards, and
are used for lifting the boards over the vessels side and veering the boards
and nets into the sea and hauling the same up, and comprises the following
improvements.
In lieu of the wooden davits heretofore used for the above purpose I provide
one or more iron davits made from round or other sectional iron constructed a
sufficient height above the vessels rail to lift the board over.
In some cases I construct the davits with solid feet secured to the deck and in
some instances they are seated into iron sockets which are fastened permanently to
the deck and in other instances they are secured to the bulwarks, rails, or other
permanent structure on the vessels top.
In some cases they are made to swing in and out board.
I construct permanent or movable attachments to the davits for which to fasten
blocks, pulleys, or fairleaders for the purpose of hauling in or letting out the wire
hawsers attached to the boards or nets.
The davits in some instances are supported by permanent or movable iron stays
attached to the decks, rails, masts or other permanent parts of the vessel.
When two davits are used together they are bent fore and aft to form an arch
and meet at the top and then bend outwards to plumb the outer edge of the rail.
The davits are usually placed at the fore and after part of the vessel or where
most suitable on one or both sides in a line with the rail.
Dated this Eighth day of October 1895.
Improvements in Davits for Use with Hauling In and Hoisting Gear
for Working Trawl and Otter-net Boards.
GEORGE LOWE ALWARD of 11 Huinton Street Great Grimsby in the County
of Lincolnshire Steam Trawler Owner, 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, that is to say :-
This invention has for its object to improve davits and hoisting gear, for trawl
or otter boards in connection with trawl nets, for the better handling and lifting of
the boards and net into the sea and hauling the same up.
In carrying out my invention and in lieu of the wooden and iron structures or
davits used heretofore for the above purpose, I provide one or more iron davits

page_text: made of round or other sectional iron, and of sufficient height to enable the boards
to be lifted over the vessel's rail.
The davits may be constructed with solid feet secured by bolts to the deck, or
they may be stepped into iron sockets permanently fastened to the deck, and in
some instances they are secured to the bulwarks, rail or other permanent structure
on the vessels top sides or deck. In some cases the davits may be made to swing
inboard and outboard.
In carrying out my invention, I provide either permanent or moveable
attachments to the davits on which to fasten, blocks, pulleys or fairleaders, for the
purpose of hauling in or letting out the wire hawsers attached to the boards and
net. To support the davits, I make use of either permanent or moveable iron
stays attached to the deck, rail, bulwark or other structural part of the vessel, or
I make use of a wire stay attached to the mast above the rigging.
When double davits are used, they are bent fore and aft to form an arch and
meeting at the top and bending outwards to plumb the outer edge of the rail. The
davits are usually placed at the fore and after parts of the vessel, and where most
suitable on one or both sides of the ship and in a line with the rail.
And in order that my said invention and the manner of performing the same may
be properly understood, I hereunto append two sheets of explanatory drawings, to
be hereinafter referred to, and showing my improvements applied to davits.
Figure 1, Sheet 1, is a profile view of a steam trawler. A A are the improved
davits with trawl or otter boards B. B. stowed and secured between the davits and
the bulwarks of the ship. The pulleys P. P. are used for the lifting the trawl or
otter boards inboard and outboard. The fairlead F. F. is used for leading the
trawl warps from the trawl winch over the vessel's rail into the sea, at both ends
of the trawler.
Figure 1, Sheet 2, is an enlarged front elevation of the improved davit, a. a. are
the two legs or pillars of the davit. b is the head pulley for lifting the boards
inboard and outboard. c is a fairlead for leading the trawl warp over the vessel's
side and can be made with one, two, or more rollers. d. d. are iron sockets to be
secured to the deck, for the davit legs or pillars to be stepped into. e is a steel
stay for supporting the davits and secured to the mast above the rigging.
Figure 2, Sheet 2, is a side elevation of the improved davit, in which similar
letters describe similar parts shewn in Figure 1. The fairlead c is shewn with
two rollers in this case in order to give large surface for wear and friction. The
top of the davits are joined and bent outwards at point of suspension of head
pulley b as previously described to plumb the outer edge of vessel's rail. e is the
steel stay to mast.
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. In connection with the working of trawl or otter boards, constructing
devits a. a. of round or other sectional iron carried up in form of an arch in fore
and aft line and bent outwards to plumb the outer edge of the rail, for lifting
trawl or otter boards inboard and outboard, substantially as and for the purposes
hereinbefore described.
2. The application to davits of a head pulley b for lifting the boards inboard and
outboard; and fairlead c for leading the trawl warp over the vessel's rail, both
pulley and fairlead adjustable to direction of lead, substantially as and for the
purposes hereinbefore described.
3. The application of head pulley b. and fairlead c to single davits for trawl or
otter boards, substantially as and for the purposes herein before described.
4. The application of direct overhead stay e to the mast to either single or
double duvits, whereby the strain on the davit is taken in the most efficient manner
without encumbering the deck or bulwarks, as described.

page_text: 5. The combination of the parts constituting improved davits for trawl or otter
boards, substantially as and for the purposes hereinbefore described.
6. The combination of all parts of the davits to secure the otter boards safely
to the trawlers deck in rough weather, when the gear cannot be worked, sub-
stantially as and for the purposes herein before described.
Dated this Seventh day of May 1896.
G. L. ALWARD.