Improvements in Mountings for Disappearing Guns.
Year: 1897

page_text: Date of Application, 11th May, 1897
Complete Specification Left, 11th Feb., 1898-Accepted, 11th June, 1898
PROVISIONAL SPECIFICATION.
Improvements in Mountings for Disappearing Guns.
I, OLIVER IMRAY, of No. 28, Southampton Buildings, Chancery Lane, in the
County of London, Chartered Patent Agent, do hereby declare the nature of this
invention (as communicated to me from abroad by Eugène Trochain, of 54, Rue
de la Bienfaisance, Paris, France, Gentleman,) to be as follows:-
This invention relates to a mounting of a disappearing gun which is arranged
as follows:
The trunnions of the gun are carried in bearings formed in the upper ends of a
pair of levers which are pivotted on the gun carriage and have arms extending
down beyond their pivots.
To these arms is linked the piston of a hydraulic recoil cylinder, and also a
weight sufficient to raise the gun to the firing position, the links which carry this
weight being governed by radius rods so that the weight moves in nearly a
vertical straight line.
The pivots of the levers which carry the gun may be provided with adjustable
friction plates to sustain part of the energy of recoil or to hold the gun in any
desired position.
There may be more than one recoil cylinder, each being provided with suitable
check valves, and a hand pump is connected to the cylinder or cylinders for the
purpose of lowering the gun when there is no recoil from firing.
The weight may be connected to its suspending link through a spring so as to
lessen the shock of recoil.
The elevation of the gun is determined by a radius rod pivotted to the breech
part of the gun and to an adjustable block on the carriage.
ABEL & IMRAY,
Agents for the Applicant.
Improvements in Mountings for Disappearing Guns.
I, OLIVER IMRAY, of Birkbeck Bank Chambers, Southampton Buildings,
Chancery Lane, in the County of London, Chartered Patent Agent, (but formerly
of No. 28, Southampton Buildings, Chancery Lane, in the County of London),
do hereby declare the nature of this invention (as communicated to me from
abroad by Eugene Trochain, of 54, Rue de la Bienfaisance, Paris, France, Gentle-
077

page_text: man), 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 the mounting of a disappearing gun which is con-
structed and operates as will be described with reference to the accompanying
drawings.
Fig. 1 is a side view and Fig. 2 is a rear view of mounting according to this
invention.
The trunnions T are journalled in bearings at the upper ends of the levers A
fixed on a rocking shaft B which is mounted in bearings on the sides of the
carriage C. The lower arms of the levers A have eyes fitted on the ends of a cross
shaft to which is linked the plunger of a recoil cylinder E. On the cross-
shaft D are fitted the eyes at the upper ends of a pair of levers F, the lower ends
of which are jointed to a weight G. To the levers F near their middles are jointed
the ends of a pair of radius rods H the other ends of which are pivotted on the rear
part of the carriage. These radius rods and the arms of the levers F are so pro-
portioned as to constitute a parallel motion causing the weight G to travel in a
nearly straight vertical line. To the gun at points some distance behind the
trunnions are jointed the upper ends of a pair of elevator rods K the lower ends of
which can be adjusted in various positions in slots L in the sides of the carriage.
The dotted lines in Fig. 1 shew the position of the parts when the gun recoils these
parts in their dotted position being marked by the letters T¹, A¹, D¹, F¹, G¹, H¹
and K. The recoil cylinder E, of which there may be more than one is provided
with a suitable valve so that the gun can be retained in its lowered position until
the valve is opened.
A pump may be applied to the cylinders so as to lower the gun when it is not
fired.
When the gun is fired, the energy of the recoil is mostly taken up by the plunger
of the recoil cylinder or cylinders, also partly by the weight G which as the gun
swings backwards and downwards is raised to its elevated position G¹. The parts
are retained in their dotted positions until the plungers of the recoil cylinder is
released, whereupon the weight G, descends raising the gun to the firing position.
The elevation of the gun is determined by the adjustment of the lower ends of
the rods K in the slots L.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is: :-
A mounting for a disappearing gun constructed and operating substantially as
described with reference to the drawings.