Improvements in "Fair-leading" Pullies and Sheaves for Trawling Gear.
Year: 1895

page_text: Date of Application, 19th Jan., 1895
Complete Specification Left: 10th July, 1895-Accepted, 14th Sept., 1895
PROVISIONAL SPECIFICATION.
Improvements in "Fair-leading" Pullies and Sheaves for Trawling
Gear.
We, CHARLES RENNOLDSON, of 11 South View, South Shields, in the County
of Durham, Shipbuilder and Engineer, and WILLIAM SMITH BRETT of 49 Empress
Street, South Shields, Draughtsman, do hereby declare the nature of said invention
to be as follows:-
Our invention relates to a method of ensuring a "fair-lead" to the trawl ropes
over the pullies, commonly known as trawl-gangway-rollers" and "dandy-
score sheaves, whatever may be the angles of the ropes in the operations of the
trawl net.
"
This
To effect this we mount the pulley in suitable bearings formed upon or bolted to
a circular grooved disc in which is an aperture for the passage of the ropes.
disc may revolve upon "live" ball rollers (in the manner of a ball bearing)
contained in a corresponding groove formed in a cast metal frame, rivetted or
bolted to the vessel's side, and having an aperture corresponding to the diameter
of the disc. The circular groove, formed between the disc groove and that in the
frame, will be preferably filled with a series of loose balls, made of any suitable
material upon which the disc with the rope pulley revolves freely, adapting itself
to the varying angles of the rope which thus travels always at right angles to the
axis of the pulley without friction or damage, or it may revolve in a plain groove
without balls or on rollers. The revolving disc will be formed, as we prefer, in
one piece with an inclined aperture in the fixed plate for introducing the balls
which aperture will be closed by a tongue" piece when the balls are all inserted
and through this aperture the balls may be extracted when necessary for cleaning
or repairs.
"
Dated this 19th day of January 1895.
T. J. DANSON, F. Inst. P.A.,
Chartered Patent Agent,
Newcastle-upon-Tyne, Agent for Applicants.
Improvements in Fair-leading Pullies and Sheaves for Trawling
Gear.
We, CHARLES RENNOLDSON, of 11 South View, South Shields, in the County
of Durham, Shipbuilder, and WILLIAM SMITH BRETT of 49 Empress Street,
South Shields, Draughtsman, do hereby declare the nature of said invention and
in what manner the same is to be performed to be particularly described and
ascertained in and by the following statement:—
"
Our invention relates to a method of ensuring a "fair-lead
to the trawl ropes
over the pullies, commonly known as "trawl-gangway-rollers" and "dandy-
score" sheaves, whatever may be the angles of the ropes in the operations of the
trawl net.

page_text: "
The
dandy rope from the after end of the "trawl" bea
to the winch.
In order that a fair lead be insured another roller S is mounted vertically upo
a bolt in the frame A and properly secured thereto so that at any angle the
5 gangway sheave F may assume the rope will lead fair over the top of it round the
ceutre of the vertical roller S and so to the winch barrel.
Having now particularly described and ascertained the nature of said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1st. Mounting the gangway roller in brackets carried upon a circular disc
revolving freely upon live balls or rollers inserted in a groove formed partly in the
revolving disc and partly in a frame fixed on the vessel's side with the objects
herein before stated constructed and operating substantially as described and shewn
on the accompanying drawings.
2nd. The method of inserting and withdrawing the live balls in said grooves by
means of recesses closed by tongue pieces in the fixed frame and in the revolving
disc respectively substantially as described and shewn by Figs, 1, 14, and 18;
2 and 24; 3 and 3 or the alternative methods shewn by Figs. 4 and 4^.
3rd. The arrangement for "housing
roller "in board" and fixing them in working position
"the disc with the brackets and gangway
as described and shewn by Figs. 44, 4B and 4°.
4th. Mounting the "daudy score
"outboard" substantially
alls or rollers, in a fixed frame with provision for ensuring a "fair-lead" from
gangway sheave on a disc revolving on live
aid sheave in all its varying positions round a fixed roller to the winch substantially
described and shewn by Figs. 5, 54, 5 and 6.
"
5th. The improvements in "fair-leading" pullies or rollers and "dandy-score'
eaves comprising the various parts in combination, constructed and operating
bstantially as described and shewn by the figures on the accompanying sheet of
awings.
Dated this 9th day of July 1895.
T. J. DANSON, F. Inst. P.A.,
Agent for Applicants.