IMPROVED MEANS OR APPLIANCES FOR SECURING TARPAULIN COVERINGS APPLICABLE ALSO FOR SECURING OTHER ARTICLES IN POSITION
Year: 1884

page_text: I RICHARD AMBROSE HOPPER of Stockton-on-Tees in the County of Durham
Ship Draughtsman do hereby declare the nature of said Invention for "IMPROVED
MEANS OR APPLIANCES FOR SECURING TARPAULIN COVERINGS APPLICABLE ALSO FOR
SECURING OTHER ARTICLES IN POSITION," to be as follows:-
:-
My Invention has for its object to provide means for securing tarpaulin coverings
applicable also for securing other articles in position for example my Invention is
applicable to securing tarpaulin coverings to the Hatch coamings of a ships deck
or for securing metal sheets to bed plates or for any analogous purpose whereby
the screws or the loose wedges ordinarily employed are dispensed with.
According to my Invention I affix to the surface or bed to which the tarpaulin or
other article is to be secured at or about the places where the edge of the tarpaulin
or article is situated when put in place a pin or pivot so situated as to project above
the said edge. This pin or pivot may be affixed by being formed with a foot piece
which is secured by rivets or otherwise to the surface or bed the pin or pivot
projecting beyond this foot piece-Upon the said pin or pivot is mounted so that
it can be rotated thereon a clamping piece or disc so formed that when turned in
one position it clamps the tarpaulin or article upon the surface or bed by pinching
the edge of the said tarpaulin or article between itself and the said surface or bed,
and when turned in the other direction the tarpaulin or article is released. The
clamping piece or disc is preferably made at the part which bears on the article of
an excentric form so that it presses gradually and forcibly as it is turned. The
turning may be effected by a lever or handle fitted into or onto or formed in one
with the clamping piece or disc.
.
J. HENRY JOHNSON,
47, Lincoln's Inn Fields, London, W.C.,
Agent for the said Richard Ambrose Hopper.

page_text: I, RICHARD AMBROSE HOPPER of Stockton-on-Tees in the County of Durham
Ship's Draughtsman do hereby declare the nature of my invention for "IMPROVED
MEANS OR APPLIANCES FOR SECURING TARPAULIN COVERINGS APPLICABLE ALSO FOR
SECURING OTHER ARTICLES IN POSITION" 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 to provide means for securing tarpaulin coverings
and is applicable for securing other articles in position, for example, my Invention
is applicable for securing coverings to the hatch "coamings" of a Ships deck which
coverings are usually secured by wedges which are liable to work out and become
lost or by screws, the threads of which soon strip by exposure to salt water, or by &
forelock which is suspended by a dog chain and is very difficult to get in and out
without injury to the tarpaulin; my Invention is also applicable for any analogous
purpose wherein the article is usually secured in position on the flat by wedges,
screws, or equivalent appliances.
Figure 1 of the accompanying drawings is a perspective view of an appliance
constructed according to my Invention and fixed in position on the hatch
"coaming" of a Ships deck or other place where it is to be used-Figure 2 is a
plan of the said appliance-Figure 3 is a side elevation of the appliance the parts
bo which it is affixed being sectioned on the line in Figure 2; Figure 4 is a
front view of the apparatus when seen in position from the top of a hatchway.
a is the pin or pivot of the apparatus which is secured to or forms part of the
flanged foot piece b, the flanges c supporting it in such a position that the pin a
projects in the required direction with reference to the ships hatch coaming or other
surface to which the apparatus is secured, which securing may be effected by means
of rivets screws or spikes d passing through the flanges c and into the part to
which the fastening is to be secured or by any other suitable means.
A cam or clamp piece e fits on to the pivot or pin a and is secured thereon by a
split pin and collar or any other suitable means so that the piece e can be rotated
on the said pivot or pin a when force is applied. The clamp piece may be a
circular disc or some suitable section of a circular disc fitted eccentrically on to the
pin a so that the space between the edge of the dise and the deck or other surface
may be made less or greater by turning the clamp piece on the pin a which may
be done by providing the clamp piece with a projection or recess to which a key or
bar could be applied or the clamp piece may be constructed as shown more
particularly in Figure 4. where the edges e¹ e are differently curved and at unequal
distances from the pin a so that different thicknesses of tarpaulin or other material
may be gripped between the clamp and deck or other surface to which the
apparatus is fixed according to which of the edges e¹e is turned towards the said
deck or other surface-By providing the clamp piece e with the straight sides fas
shown in Figure 4 an ordinary key can be employed for the purpose of turning the
clamp piece to secure or release the tarpaulin or other material. h shews a hatch
bar placed between the clamp piece.e and the tarpaulin or the like in order to
secure a water tight fit all round the hatchway.

page_text: Having now described and particularly ascertained the nature of my said
Invention and the manner in which the same may be carried into effect I declare
that what I claim is.
"
An appliance for holding down tarpaulin canvas or the like to a ships hatch
'coaming" or other surface, the said appliance consisting of a clamp piece or cam
mounted so as to be capable of being turned on a pin or pivot fixed or fixable
to the part to which the tarpaulin or the like is to be secure substantially as
herein before described and illustrated in the accompanying drawings.
3004