Improvements in Shoes for Trawl Otter Boards.
Year: 1896

page_text: Date of Application, 25th July, 1896-Accepted, 29th Aug., 1896
COMPLETE SPECIFICATION.
Improvements in Shoes for Trawl Otter Boards.
I, HECTOR FOSTER FOURNY, of French Chambers, Queen's Dock, Hull,.
Consulting Engineer and Marine Surveyor 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 shoes which are fitted to the bottom of
trawl otter boards, for the purpose of raising the boards off the ground, and
diminishing the resistance to towing.
Now the object of my invention is to so construct fixed shoes for the bottom of
trawl otter boards, with suitable renewable liners for taking up the wear on the
bottom of the shoes, in order to avoid the total renewal of the shoes after the
usual period of service.
The term "fixed shoes" applies to shoes that do not swivel or turn, but they may
be fitted with wheels or rollers when required.
In carrying out my invention, instead of constructing a trawl board with only a
plain iron shoe on the bottom, I attach to the boards, two or more metal or iron
shoes, of a spherical or egg shape, with or without wheels or rollers. I also
arrange that the bottom part of the shoe may be removed & renewed, without
necessitating the total renewal of the shoe when worn. This bottom part of the
shoe therefore serves as a liner or wearing piece. I also arrange holes in the lower
part of the shoe, in order to drain out the sand & water which may get inside of
the shoe whilst trawling. I also arrange where necessary to increase the wearing
surface of the shoes, to prolong the lower part of the shoe, with suitable ribs
at any angle varying from 90° to 0°.
To enable my invention to be fully understood, I describe the same by reference
to the accompanying drawings, in which :-
Figure 1, represents an otter board in side elevation in which s represent the
shoes.
Figure 2, is a plan of Figure 1, the shoes s, being fixed at the approximate.
angle of resistance to towing.
Figure 3, is an enlarged sectional view of a shoe in which is the wearing piece
or renewable liner, held in position by bolt b. h are holes for draining sand &
water from the inside of shoe. a are holes for bolting the shoe to the trawl
board.
Figure 4, is an enlarged sectional view of a shoe, shewing the lower part of the.
shoe prolonged to give additional wearing surface & in which is the wearing piece
or renewable liner, held in position by bolts b, b.
Figure 5, is an end elevation of Figure 4.
Figure 6, is a plan of Figure 3, looking on the bottom & shewing method of
fixing wearing piece held in place by means of screws c, instead of one bolt
through centre.
Figure 7, is a plan of Figure 4, shewing outline of liner 7.
Having now particularly described and ascertained the nature of my invention,
and in what manner the same is to be performed, I hereby declare that what I
claim is :-
1. In trawl otter boards, attaching fixed shoes, substantially as, and for the.
purposes described.

page_text: 2. Improved trawl shoes, of spherical or egg shape, with liner or wearing piece 1,
and drain holes h, substantially as, & for the purposes described.
3. Improved trawl shoes, of spherical or egg shape, with increased wearing
surface, substantially as in Figures 4 & 7, & for the purposes described.
4. The combination of the parts constituting improved trawl shoes, as shewn &
described.
Dated: ou do of L. 1908
H. F. FOURNY.