Improvements in Apparatus for Preventing Concussion in Ramming of Ships.
Year: 1896

page_text: Date of Application, 18th Apr., 1896
Complete Specification Left, 20th Nov., 1896-Accepted, 17th Apr., 1897
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Preventing Concussion in Ramming
of Ships.
ROBERT JAMES PLUNKETT Officer Her M. Customs Apsley Villa Acraman's Road
Southville Bristol do hereby declare the nature of this invention to be as follows:-
The improvements in apparatus, for preventing concussion in ramming of "ships,"
shall be constructed of iron, steel, brass, copper, or composition metal consists of
three bars, centre & two stay bars (round), centre bar, have two shoulders, square
centre; three lapped plate springs curved, with hole in each centre, slit in each end,
one is passed over right hand end, centre bar, to shoulder, then spiral spring,
second lapped spring is passed over, curved part facing each other, forming a bow
shape; the two ends of lapped springs meet, then a spiral spring, the third lapped
plate spring, is passed over, curve facing left, the two ends touching aft partition,
of watertight case, then spiral spring. The two stay bars are passed through the
slits of the three curved lapped plate springs, top and bottom. Spiral springs, are
passed over the left ends, of the two round stay bars, and to the shoulder of the
centre bar, from the stem of "ship," inside, the ends of the three bars are passed
through the stem, then a spiral spring, is passed over centre bar, to stem; also
a fourth curved lapped plate spring, with the two ends of stay bars, passed through
the slit ends of the lapped springs, pressing the fore side of stem of ship, which is
secured by screw nuts, the left-hand ends of bars, are passed through the aft
partition of the watertight case, then fastened by screw nuts.
There are attachments necessary to the arrangements. Dimensions of machine
will be according to circumstances, and construction of ships.
Dated this 4th day of June 1896
COMPLETE SPECIFICATION.
Improvements in Apparatus for Preventing Concussion in Ramming
of Ships.
ROBERT JAMES PLUNKETT Officer Her M. Customs Apsley Villa Acraman's Road
Southville Bristol 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:-
The improvements in apparatus for preventing concussion in ramming of "ships"
shall be constructed of iron, steel, brass copper, or composition metal consists of
three bars, centre and two stay bars (round) centre bar, have two shoulders, square
centre: three lapped plate springs curved with hole in each centre, slit in each end
one is passed over right hand end, centre bar to shoulder. Then spiral spring,
second lapped spring is passed over curved part facing each other forming a bow
shape. The two ends of lapped springs meet, then a spiral spring, the third lapped
plate spring is passed over, curve facing left the two ends touching aft partition

page_text: of watertight case. Then spiral spring, the two stay bars are passed through the
slits of the three curved lapped plate springs, top and bottom spiral springs are
passed over the left ends of the two round stay bars, and to the shoulder of the
centre bar from the stem of "ship" inside, the ends of the three bars are passed
through the stem, then a spiral spring is passed over centre bar, to stem also
a fourth curved lapped plate spring, with the two ends of stay bars passed through
the slit ends of the lapped springs pressing the fore side of stem of ship which is
secured by screw nuts, the left hand ends of bars, are passed through the aft
partition of the watertight case, then fastened by screw nuts.
There are attachments necessary to the arrangements, dimensions of machine
will be according to circumstances, and construction of ships.
FIG. 1 SHEET 1.
The apparatus to be constructed of wrought metal and steel.
A top bar, B centre bar, C bottom bar, D spiral spring being passed over
bars A, B, and C from left to right longitudinal to E lapped plate spring. The three
bars A. B. & C. being passed through the warships stem extending outside, I, spiral
spring being passed over bar B, to the stem from left to right the lapped plate
spring, H, being attached by passing it over bars A, B, & C. H to left then secured
by nuts No. 1, J the relief slit ends of the lapped plate springs meeting the ships
stem line as marked, E lapped plate spring being passed over bars A, B, & C, from
right to left to shoulder of centre bar B, E to loft. Spiral spring F passed over
bar B from right to left to E lapped plate spring being passed over bars A, B & C
from right to left to spiral spring F, G to the left, the two ends of lapped plate
springs E&G two lapped plate springs meeting each other, which are coupled
together by coupling plates and bolts. Spiral springs K are passed over
bars A, B, & C. from right to left to lapped plate spring G, lapped plate spring L
being passed over bar B from right to left the ends of lapped plate springs, L. and
spiral spring M. meeting line as marked A, B, & C bars being passed through the
aft plate of longitudinal watertight compartment secured by nuts No. 2.

page_text: 2nd. That its nature, and construction is such that the machine, consisting of
spiral, and lapped plate springs give a powerful blow, and resisting relief
of action.
3rd. That two of the machines can be used by warships by placing one below
the water line longitudinally, and one above the water line in a horizontal position
in the bows, and support the stem, and rams of the ships, and thus prevent
concussion.