An Improved Revolving Bollard for Steam Trawlers.
Year: 1896

page_text: Date of Application, 4th Sept., 1896
Complete Specification Left, 27th May, 1897-Accepted, 24th July, 1897
PROVISIONAL SPECIFICATION.
An Improved Revolving Bollard for Steam Trawlers.
We, CHARLES DENTON HOLMES of Hull Engineering Works Hull Engineer,
WALTER JAMES WOOD of 10 Hainton Avenue, Grimsby, Engineer, and WILLIAM
WALLACE of 266 Willingham Street Grimsby Engineer do hereby declare the
nature of this invention to be as follows:--
Our invention consists of combining in revolving bollards or fairleads for steam
trawlers the following improvements, 1-the pivotting or suspending of the roller on
the top of the spindle round which it revolves: 2-the lubricating of the pivot
automatically: 3-the application of frictionless rollers the whole length of the spindle:
and, 4, the adoption of a ring in segments outside the bollard roller which can be
cheaply and quickly renewed when worn by the wire warp.
Our invention has for its objects the prevention of chafe and wear to the wire warp
by means of which the fishing gear is hauled in, and to the bollard itself:
In order to carry out these objects we construct our bollard in the following
manner-the bollard roller of cast iron or other suitable metal revolves round a vertical
spindle of steel or wrought iron fixed into a strong metal base bolted to the deck.
Around the spindle we arrange a number of cylindrical steel, iron or brass rollers of
the same length as the spindle itself, thus forming a frictionless roller bearing of
ample surface and strength to withstand any strains it may be subject to in working
the fishing gear. In the upper part of the bollard roller is a plate the centre of which
bears on the top point of the spindle, which thus carries the whole weight of the roller
and is automatically lubricated by a special lubricator. Round the outside of the
roller is a renewable ring of suitable metal made in two or more segments and fastened
by screws or other means to the main body of the roller to take the chafe of the warp.
This ring or part of it can be easily renewed by a similar ring or part of it when
worn out.
The above improvements combined in our revolving bollard cause the roller to very
readily revolve with any movement of the warp or rope which passes round it.
Dated this 2nd day of Santamba 1000
CHARLES D. HOLMES.
WALT. J. WOOD.
W. WALLACE.
An improved Revolving Bollard for Steam Trawlers.
We CHARLES DENTON HOLMES of 6 West Parade and of Hull Engineering Works,
Alfred Street, Hull Engineer, WALTER JAMES WOOD of 10 Hainton Avenue, Grimsby,
Engineer, and WILLIAM WALLACE of 266 Willingham Street Grimsby, Engineer, do
hereby declare the nature of this invention and in what manner the same is to be
[Price]

page_text: performed, to be particularly described and ascertained in and by the following
statement :-
This invention consists of an improved revolving bollard or fairlead, our object being
to so construct and arrange the revolving part or roller of such appliance that it will
readily revolve with every movement of the trawl warp passing round it; and that the
wearing part of the said roller shall be easily and cheaply renewable.
In the accompanying drawings we illustrate a revolving bollard for a steam
trawler constructed in accordance with our invention.
Figure 1 is a sectional elevation.
Figure 2 is an elevation.
The same index letters in the two figures indicate the same parts.
The bollard or roller A, of cast iron or other suitable metal, revolves round the
spindle C which is firmly fitted into the casting B forming the base.
In Figure 1 the spindle is shown with the part fitted into the base in section, and
the top part round which the bollard revolves in elevation, shaded. The top part of
the spindle C is reduced at D to form a pivot on which rests the plate E. This plate
is fixed by means of screws F F to the body of the bollard; by this means the weight
of the bollard rests on the spindle at D. A special automatic grease cup H lubricates the
pivot D. Around the spindle C we arrange a number of antifriction rollers J. The
suspending of the bollard or roller on the top of the spindle, and the interposition of
the antifriction rollers round the spindle allow of the bollard being very freely
revolved.
On the outside of the bollard is an annular piece of steel or cast iron K of suitable
thickness, in two or more segments let into a turned recess in the body of the
bollard A, and attached to it by means of the screws L L, shown in Figure 2. This ring
takes all the chafe of the wire warp running round the bollard and is renewable
as stated.
Having now particularly described and ascertained the nature of our said Invention,
and in what manner the same is to be performed, we declare that what we
claim is :-
1. In revolving bollards the combination of a bollard such as A, pivotted on the
spindle C, automatically lubricated, and with antifriction rollers J, substantially as
described and illustrated in the accompanying drawings.
2. The improved bollard A having a renewable ring of metal K, substantially as
described and illustrated in the accompanying drawings.
3. The improved general construction of revolving bollards for steam fishing vessels
substantially as and for the purpose hereinbefore described.
Dated this 26th day of May 1897
CHARLES D. HOLMES.
WALT. J. WOOD.
WILLIAM WALLACE.