Schneider-Canet 75mm & 70mm mountain
gun type MC²
Gun-body in hardened and tempered
Breech with eccentric screw mechanism, interrupted
threads, opening with an uninterrupted single action of the hand-lever.
Repeat firing device with hammer and safety
arrangement against premature fire and prolonged fires.
Sleigh composed by a block of forged steel, where
the housing for the buffer, the recuperator and the air recupeartor-tanks are
Recoil hydraulic buffer independent of the
recuperator, and containing the check buffer.
Cylinder with air recuperator-tanks requiring only couplings watertight to
Cradle of stamped steel sheet carrying the bronzed
Arc sight with level of the angle
of sight and goniometer with optical sight. Prismatic device for back aiming.
Carriage of stamped steel sheet,
that can be dismantled in two section, with trail-chest.
Crancked axle-tree, that enables to change
quickly the height of the axis of the gun.
Traversing on axletree bed.
Padded kneeler, fixed to the trail of
the carriage, for the aimer and the firer.
Trail spade composed by a fixed ploughshare in forged steel, and a moveable part in steel sheet.
Gun-shield that can be dismantled, made
by steel sheet of the French artillery type.
Portable ammunition shield, made by
steel sheet of the French artillery type.
Mechanical fuze-setter for time and percussion
Fixed ammunition with shrapnel or
thin-walled high explosive shell loaded with high explosive (Schneiderite).
nitrocellulose powder made in
Ammunition box of metal.
Packs and loading method designed with the help
of the French Alpine artillery.
II. General properties
The power is at least equal to the power
of the known mountain guns.
The steadiness on firing is identical to
the steadines of the best field guns.
The extent of the field of fire for elevation
is very remarkable, thanks to the cranked axletree, in order to allow the
correction of the highest angle of sight envisaged in mountain warfare.
The return in firing position is always
complete under the highest angles by means of the force of the pneumatic
recuperator, as well as constant and without shock thanks to the action of the
check buffer assures a return in firing position regular and without shock.
The leakage of the air is impossible, since the air recuperator-tank is
arranged like a bottle filled half with water, and half with liquid, and
resting on its top.
The safety of use is complete; the
eccentricity of the breech and the mechanical safety-piece of the firing gear
prevent any trouble.
The protection of the cannoners is
perfectly assured thanks to the gun-shield that can be mounted on the
carriage during the shooting, and to the ammunition shield that shelter the shell-handlers.
The rapidity of fire can reach a rate of
25 – 30 rounds per minute thanks to the easiness of the handle the gun, and
to the use of the fuze-setter for time and percussion fuzes.
Transport on pack animals, with details
giving every kind of guarantee. All loads are within the limits of weight
usually accepted. Loading and unloading are carried out by quite trained
cannoneers in one minute and half.
III. Numerical references and data
This is the
translation of an advertisement of the French firm Schneider-Canet published
in 1908 (SCHNEIDER & CIE. Matériel
de montagne à tir rapide de 70 &