The Works Of Messrs. Schneider And Co.
Forfatter: James Dredge
År: 1900
Forlag: Printed at the Bedford Press
Sted: London
Sider: 747
UDK: St.f. 061.5(44)Sch
Partly Reproduced From "Engineering"
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32-CENTIMETRE 40-CALIBRE GUN.
189
The hydraulic recoil cylinders are provided with
central counter-rods on the “ Schneider-Canet ” system,
and with compensating cylinders. The cylinder piston-
rods are fixed to the rear end of the slide paths, while
those of the compensating cylinders form one piece with
the front cross-stay of the slide. The running out of the
gun can be controlled or stopped at will by operating j
a valve that Controls the action of the compensating j
cylinders.
The gun is made throughout of steel, and is built up in
jackets to the muzzle ; it is held in the carriage proper by
means of a grooved jacket. The breecli mechanism consists
of a breech-block with supporting slide, an obturator, and
the firing device. The breech-block is cylindrical, with
four plain and four threaded parts ; it is carried on a
supporting slide. It is worked mechanically by means of
a crank and toothed gearing which successively turns the
block in its seating, withdraws it, and moves its support
Fig. 614.
Figs. 614 and 615. 32-Centimetre (12.598-in.) Gun and Mounting.
32-Centimetre (12.598-In.) Gun, 40 Calibres in Length
(Figs. 614 and 615).—Guns of this type have been supplied
to the Japanese Government for armament of tho coast-
guard ships Itsukushima, Matsushima, and Hashidate.
Weight of gun ,, projectile ... 66,000 kg. 450 kg. 66 tons 990 Ib.
,, charge (prismatic brown 240 kg. 528 Ib.
Muzzle velocity 700 ni. 2296 ft.
Pressure 2,400 kg. 15.24 tons per
sq. in.
Angles of elevation ... + 10 deg. + 10 deg.
— 4 deg. - 4 deg.
round the vertical hinge bolt. The obturator is plastic,
and is situated between the front end of the screw and the
movable head. The firing device consists of a bolt which
acts by percussion. As long as the breech is not com-
pletely elosed, the bolt that slides in the rear end of the
breech-screw masks the vent, and prevents the introduction
of a percussion tube ; at the same time the striker cannot
act, thus doing away with all risk of prématuré fire.
The mounting consists of bearing-blocks, a slide and a
gun-carriage proper. The bearing-blocks are two in
number ; they are fixed symmetrically to the platform,
with the interposition of a sole-plate ; damps prevent al]
2s