The Works Of Messrs. Schneider And Co.

260 MESSRS. SCHNEIDER AND CO.’S WORKS. of the cheeks ; the plunger for running- in the gun is joined to the slide stay-piece. The recoil cylinders are made with constant résistance. During recoil, the liquid flows from the front to the rear of the piston through two openings, which are partly blocked up by two r.ods fixed to both ends of the cylinder. The section of these rods at varions parts of their length is so designed that the free opening for the flowing of the liquid varies with the recoil speed, the résistance to the flow being constant (Fig. 865). The volume of liquid, The manœuvre for running in the gun is effected by means of a small pump fitted to the bedplate, and worked by two handwheels on each side of the mountins'. The pump di-aws the liquid from the recoil cylinders through a conduit in the rods, and delivers it in the running-in cylinder through a passage in the plunger. Elevation ranges from — 7 deg. to + 20 deg. A toothed sector fitted to the gun acts in conjunction with a pinion, joined through a friction cône, to an endless screw ; Belleville springs allow a certain amount of play Fig. 864. 12-in. Coast-Defence Grim and Schneider-Canet Mounting. Fig. 865. Section through Brake Cylinders. which corresponds to that of the rods, when driven from the cylinders, flows through two pipes and a valve ehest in the cylinder for running in the gun, and fills exactly the voici caused by the withdrawal of the plunger. The valve ehest is arrangée! in such a way that the liquid passes into the running-in cylinder after raising a valve, and can only return in the recoil cylinders through a vent, the opening of which is regulated by a rod which is worked from a handle placée! on the side of the mounting. If the rod is driven home in the vent, the gun remains run in, and it runs out quicker the more the rod is raised. between the varions parts to counteract violent shocks. The handwheels for giving the required elevation do not follow the recoil, and can act whatever be the position of the gun, by working a square shaft, carried by the mount- ing, and on which slides a conical pinion. The gun is trained through a pinion fitted to the bedplate, and which engages a circular rack fixecl to the transom. The pinion is worked by a set of wheels and an ' endless screw, the latter being driven by two cranks keyed on the same shaft, and placed near the handwheels for elevating the gun. Crainps in the front and rear of the bedplate clasp