A Safety Appliance for Guns Worked with Miniature Ammunition.
Year: 1887

page_text: Date of Application, 31st Dec., 1887
Complete Left, 9th Mar., 1888
Complete Accepted, 13th Apr., 1888
PROVISIONAL SPECIFICATION.
A Safety Appliance for Guns Worked with Miniature Ammunition.
I, HARRY CRAMPTON of Eynsford, St. Andrews Road,. Southsea in the County
of Hants, Gentleman do hereby declare the nature of this invention to be
as follows:-
My invention relates to an appliance for guns when they are worked with miniature
ammunition, for the purpose of preventing their fire from doing damage when they
are trained into directions beyond certain limits. Over the muzzle of the gun I mount
a shutter which is usually held up by a trigger catch, leaving the muzzle free. I
connect the trigger by cords of determined length to fixed points one on each sido
of the gun. So long as the gun is trained into directions such that neither of these
cords is strained, the muzzle remains open and the firing of the miniature projectiles
is not interfered with.
But should the gun be trained so far round in either direction as to strain one or
other of the cords, the trigger is thereby withdrawn and the shutter closes down over
the mouth of the gun. If the firing then takes place the miniature projectile
arrested by the shutter and cannot do any damage beyond.
D: 214 day of December 1887
ABEL & IMRAY,
Agents for the Applicant.

page_text: I HARRY CRAMPTON of Eynsford St. Andrews Road, Southsea in the County of
Hants Gentleman 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 relates to an appliance for guns when they are worked with minia-
ture ammunition, for the purpose of preventing their fire from doing damage when
they are trained into directions beyond certain limits.
Over the muzzle of the gun I mount a shutter which is usually held up by a trigger
catch leaving the muzzle free. I connect the trigger by cords of determined length
to fixed points one on each side of the guu. So long as the gun is trained into
directions such that neither of these cords is strained, the muzzle remains open and
the firing of the miniature projectiles is not interfered with.
But should the gun be trained so far round in either direction as to strain one or
other of the cords, the trigger is thereby withdrawn and the shutter closes down over
the mouth of the gun.
If the firing then takes place the miniature projectile is arrested by the shutter and
cannot do any damage beyond.
Fig. 1 of the accompanying drawings is a diagram plan shewing part of a turret
and gun provided with the appliance above described Fig. 2 is a part longitudinal
section of the muzzle of the gun with the shutter held open by the catch and Figs. 3
and 4 are back views shewing respectively the catch engaged holding the shutter, and
the catch withdrawn releasing the shutter. Referring to Fig. 1 if A and B indicate
the limits between which the gun may be safely trained, I fix to any stationary
objects two lanyards L L of such length that when the gun is trained to the line A
the one lanyard is strained and when it is trained to the line B the other lanyard is
strained These two lanyards are attached to a catch C which is mounted to turn on
a pivot on a plate P fixed at the muzzle of the gun. The fixing of the plate P may
be effected by pushing into the muzzle a boss Q with a hole through it large
enough to let the miniature.ammunition freely pass; to this boss the plate P may be
fixed.
On the plate P is mounted a hinged shutter S from which projects an arm
terminating in a hook T. So long as the catch. C stands upright or nearly so, it
engages the hook T holding the shutter S up,-but-should either of the lanyards L
become strained, the catch & is pulled to the one side or the other as shewn in Fig. 4
releasing the shutter S which drops, covering the muzzle of the gun and preventing
the issue of the miniature projectile.

page_text: Having now particularly described and ascertained the nature of this in-
vention and in what manner the same is to be performed I declare that what
I claim is :-
As a safety appliance for guns worked by miniature ammunition, a shutter for the
mouth of the gun in combination with a catch attached to lanyards of suitable length
to release the shutter when either is strained, arranged and operating substantially as
and for the purpose set forth.