An Improved Means for Fastening Ships' Hatch Tarpaulins.
Year: 1891

page_text: Date of Application, 28th Jan., 1891
Complete Specification Left. 28th Oct., 1891-Accepted, 5th Dec., 1891
PROVISIONAL SPECIFICATION.
An Improved Means for Fastening Ships' Hatch Tarpaulins.
I, THOMAS Ross DICKSON, of No. 58 Raby Street, Durham Road Gateshead
on Tyne, in the County of Durham, Engineer do hereby declare the nature of this
invention to be as follows:-
My invention has for its object an improved means for securing tarpaulins upon
the hatches of ships when these are battened.
My said invention consists of a bolt or pin which passes through a hole in the
A slot is
cleat, so that the point of said pin may press upon the batten bar.
formed in the end of the pin, so that a wedge cottar may be driven in, one edge
only of said cottar being tapered, and corresponding to a similar taper at the end
of the slot in the pin or bolt, the other edge, which presses against the inside of
the cleat being parallel thereto. When said cottar is driven tightly into the slot,
the bolt or pin is caused to compress the batten bar, and so hold the tarpaulin
firmly between the coaming and said batten bar. The slotted bolt or pin need
not be removed from the clent when the batten bar is required to be released for
the purpose of removing the tarpaulin, a small pin or stop being fixed in the smaller
end of the wedge to prevent it from being entirely drawn out of the slot.
Dated this 28th day of January 1891.
FREDK. WALKER,
11, Furnival Street, Holborn, London, E.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
An Improved Means for Fastening Ships' Hatch Tarpaulins.
I, THOMAS Ross DICKSON of No. 58 Raby Street, Durham Road Gateshead
on Tyne, in the County of Durham, Engineer, 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 has for its object an improved means for securing tarpaulins or
covers upon the hatches of ships, and rendering them watertight when battened.
In order to render the description of my said invention clearly, reference may
be had to the appended sheet of drawings in which
Figure 1 is a sectional view of a hatch and coaming, and
Figure 2 an elevation thereof.
Figures 3, 4 and 5 are details, shewn separately and drawn to a larger scale.
In carrying my invention into effect employ a bolt or pin a which passes
through a hole in the cleat so that the point of a may press upon the batten
bar c.
The pin a is shewn detached and drawn to an enlarged scale at Figure 4.
A slot his formed at the end of said pin a, under the head thereof, so that a wedge
cottar Figures 1, 2 and 3 may be driven in, one edge only of said cottar being
tapered to correspond with a similarly tapered side of the slot in the pin or bolt a,
the other edge of which presses against the cleat & being parallel thereto. When
the tarpaulin or covering e is placed over the hatch H, Figures 1 and 2, and the
edges are turned down over the coaming d and the batten bars c are laid in the
cleats the cottar fis driven tightly into the slot in the bolt or pin a forcing its
point upon the batten bar c and causing the latter to compress the tarpaulin or
cover e between it and the coaming d, so that if a sufficient number of cleats b
fitted with pins a and cottars f be arranged along the coaming of a ships hatch,

page_text: the tarpaulin or cover may be quickly and securely battened and rendered water-
tight and as quickly removed when necessary. The bolts or pins a and the cottars f
need not be removed when it is required to release the batten bars, and to prevent
this, and to avoid delay by reason of the parts being lost or mislaid, I provide a
ring g or a stop pin, in the end of the cottar which prevents it. from being with-
drawn from the pin or bolt u, and consequently also prevents the latter from being
withdrawn from the cleat b.
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 :-
First. The device for fastening ships hatch tarpaulins substantially as herein
described and shewn by the drawings.
Second. In a device for fastening ships hatch tarpaulins, the combination of a
pin or bolt a cleat band cottar with a batten bar e substantially as and for the
purposes herein described with reference to the appended drawings.
Dated this 26th day of October 1891.
FREDK. WALKER,
11, Furnival Street, Holborn, London, E.C., Agent for the Applicant.