24-CENTIMETRE COAST-DEFENCE GUN.
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with slide and carriage. The bedplate is made with a front
pivot, and is bolted on a masonry foundation. The
transom rests on conical rollers. The slide is fixed on the
drives, through a set of pinions, an endless screw and a
toothed wheel, the latter engaging direct the toothed sector
fitted to the gun. For training the gun, the niechanism
Figs. 870 and 871. 32-Centimetre Coast-Defence Gnus, with Schneider-Canet Mounting.
transom, and consists of two parallel vertical cheeks stayed
in front; it is carried in the rear on wheels which turn
round a circular path on the platform. The gun is pro-
tected by a shield when required.
The required elevation is given by a crank which
consists of a crank, an endless screw, and a pinion, the
latter engaging the circular rack of the bedplate.
The hydraulic recoil cylinders are of constant volume ;
the plunger-rod is fitted to the slide. At the end of the
recoil, the valve falls back on its seat, the liquid under