Gun and Projectile with Grapnel Attachment for Throwing a Line or Rope from Ship to Shore and for other purposes.
Year: 1892

page_text: Date of Application, 26th May, 1892
Complete Specification Left, 27th Mar., 1893-Accepted, 20th May, 1893
PROVISIONAL SPECIFICATION.
Gun and Projectile with Grapnel Attachment for Throwing a Line
or Rope from Ship to Shore and for other purposes.
I ALFRED EDWARD GARWOOD Mechanical Engineer Mem. Inst. C.E.,
Hazlewood House Newport Mon. do hereby declare the nature of this invention to
be as follows:-
:-
The gun is made of steel or gun metal and the breech strengthened by a series
of rings shrunk on and fastened together by studs or bolts and the gun is so
constructed that the projectile is slipped on to the outside of barrel of gun a certain
distance from the muzzle.
The projectile is of conical form with a four pronged grapnel securely fastened
to the end, the projectile is bored out to a certain depth on the inside and turned a
true fit to slide on the front part of gun.
On the front part of the underside of the projectile an eye piece for connecting
up the line or rope is securely fitted.
The gun is mounted on a carriage or rack and can be fired by an ordinary fuse-
or by electricity as the situation requires.
Dated this 24th day of Mar 1892
A. E. GARWOOD.
COMPLETE SPECIFICATION.
Gun and Projectile with Grapnel Attachment for Throwing a Line
or Rope from Ship to Shore and for other purposes.
1, ALFRED EDWARD GARWOOD, M. Inst. C.E. of Hazlewood House, Newport,
in the County of Monmouth, Mechanical 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 :-
This invention relates to improvements in guns and projectiles suitable for
throwing a line or rope from a stranded ship to the shore and for other purposes..
According thereto the gun and projectile, or each projectile, are formed in such a
manner that the muzzle of the gun fits into the rear or base of the projectile, in
which a recess or cavity is formed to receive the same, so that the gases from the
explosion of the propelling charge in the barrel do not reach and act on the
projectile until they have traversed the full length of the barrel.
The gun preferably extends some distance into the projectile and the rear part
of the latter fits closely but not tightly round the same so as to form a nearly gas
tight joint whilst at the same time permitting the projectile to move off the muzzle
end of the gun freely when the gun is fired.
The said projectile may be of conical or rather conoidal form at its forward end
and, when intended for carrying a line to shore, is provided with a suitable grapnel
to cause it to hold or anchor itself at or near the place where it falls.
provided with an eye-piece for the attachment of the line, or of a block for a whip
or cord.
It is also
To increase the accuracy of aim in such cases the projectiles may be caused to
rotate around their longitudinal axis by rifling the interior of the rear part thereof,
or forming the same in such a manner that they will engage with and be rotated by
rifle grooves or lands on the exterior of the gun.
And in order that the nature of my said invention may be readily understood

page_text: I will now proceed to describe the same by reference to the accompanying drawings
in which,
Fig. 1 is a side elevation,
Fig. 2 is a longitudinal section, and
Fig. 3 is an end view, of a gun and projectile with grapnel attachment according
to this invention, the projectile being shown in position for firing.
The gun A is of the muzzle loading kind and is provided with trunnions B by
which it can be supported in the usual manner in a suitable carriage.
The bore C is unrifled and is only about six calibres in length, while the muzzle
end of the gun is only about half the length of the bore and is of uniform external
diameter. DD are strengthening hoops which are shrunk on the chamber portion
of the gun and are secured against longitudinal shifting by means of tie bolts E E
that pass through them and are screwed into the projecting rear portion A' of
the gun.
Fis the projectile, the rear part, F¹ of which fits over the muzzle end of the gun.
The forward end or point of the projectile is as stated of conoidal form.
G is a
four-armed grapnel which is secured to the said point by means of a bolt H passing
axially through the projectile and through the centre or boss of the grapnel, and a
nut H¹ on the said bolt, distance rings II being inserted between the said grapnel
and the point of the projectile if desired. The arms of this grapnel may be hinged
or jointed to the projectile so that they can be turned or folded inward against the
projectile when not in use during the Hight of the projectile but will open out and
take up a position such as to engage with or become partly embedded in the shore
upon which the projectile is fired, when it is attempted to pull the projectile
seawards by means of the line or cable attached to it. Or the arms of the grapnel
may be forged solid with the boss as in the arrangement shewn. J is the eye for
the attachment of the line or line and whip block. The gun may be fired by
electricity or otherwise as may be convenient.
A gun and projectile with grapnel attachment arranged according to this
invention are very simple and free from complication, and are not liable to easily
get out of order or become damaged or rendered useless by rough or careless
handling.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. A gun and projectile so constructed and arranged that the projectile can fit
over the muzzle end of the gun when ready for firing, the said projectile being
provided with a grapnel and an eye for attachment of a line substantially as herein
described.
2. A gun and projectile with grapnel and line attachments constructed and
arranged substantially as hereinbefore described with reference to and shown in the
accompanying drawings.
Dated this 27th day of March 1803
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.