The Works Of Messrs. Schneider And Co.

226 MESSES. SCHNEIDER AND CO.’S WORKS. limited tonnage, designed for pursuing similar ships scantily protected, but capable of developing a high speed. They can be worked ultra-rapidly, the breech-block being almost instantaneous in its action. 65-Millimetre (2.559-In.) 50-Calibre Guns (Fig. 755). —These guns, as a whole, embody the same general arrangements as those of 47-millimetre 60 calibres in length, just described. They differ, however, in the spindle parallel with the niounting bracket, and fitted with an endless screw that engages a hélicoïdal wheel mounted on the same axis as the cylindrical pinion that engages the tootlied sector fitted to the jacket, and transmits to the gun the required oscillations. As regards the inside pivot arrangements, these guns are very similar to those of 10, 12, and 15 centimetres described hereafter. 10-Centimetre (3.937-In.) 45-Calibre Quick-Firing Figs. 756 and 757. Mounting for 10-Centimetre Quick-Firing Gun. addition of an elevating mechanism and in the details of the slide pivot. Weight of gun... 550 kg. 1212 Ib. Length in calibres 50 50 Weight of mounting ... 600 kg. 1322 Ib. ,, shield Maximum angles of elevation 180 kg. 396 Ib. + 15 deg. + 15 deg. Weight of proj ectile ... — 10 deg. - 10 deg. 4 kg. 81 Ib. Muzzle velocity in service 740 m. 2428 ft. The elevating mechanism is on the left side of the slide ; it consists of a shaft titted with a toothed pinion and worked by a handwheel ; this shaft works a second Guns (Figs. 756 and 757 ; and 758 and 759, Plate CXXXI.).—Guns of this type have been manufacturée! lately by Messrs. Schneider and Co. in large jiumbers. The mounting is generally similar to that for the 47- and 65-millimetre guns already described, but it embodies a special mechanism for the training of the gun. In this and the larger calibres, the inertia of the movable parts is too great for it to be possible to insure their working with the required rapidity, by simply acting on the butt-end of the gun. The base is of cast steel, in one piece, its lower flange being bolted on the deck. Its central part forms the