. American engineer and railroad journal . e frictional bearing ofthe disks may be regulated at will. Jiecoil c/iec/i.—The hydraulic recoil cylinder F (fig. 1),referred to above as being cast in one with the screw-bandB, contains the licpiid, the piston and rod O, and the spiralspring JI for return to battery. The forward end of thepiston passes through a in the cylinder, and is secured by right and left-handed nuts Ci Ci to the front armCa of the rocking frame C. The spring // is set in iilaeewith an iintial tension, so that it tends constantly to forcethe gini into tiring |)osi
. American engineer and railroad journal . e frictional bearing ofthe disks may be regulated at will. Jiecoil c/iec/i.—The hydraulic recoil cylinder F (fig. 1),referred to above as being cast in one with the screw-bandB, contains the licpiid, the piston and rod O, and the spiralspring JI for return to battery. The forward end of thepiston passes through a in the cylinder, and is secured by right and left-handed nuts Ci Ci to the front armCa of the rocking frame C. The spring // is set in iilaeewith an iintial tension, so that it tends constantly to forcethe gini into tiring |)osition. Grooves of varying cross-sec-tion are cut in the interior of the cylinder (fig. 3), by whichthe llow of li(piid from the front to the rear of the ])iston,during recoil, is controlled. Loiuliiig tray.—A loose collar ■) (fig. 1), on the verticalscrew 1, carries, by the arms 7, S (fig. .>), the loading tray tray is swung clear before (iriug the gun, and into theposition shown in fig. .) after the discharge. It is raised. and revolves the car- or lowered by the wheel ■) and nut 2 working on thescrew 1, so that it can always be brouglit into position forloading without changing the guns elevation. LIQUEFIED ATMOSPHERIC AIR. Pkokessor recently delivered an address on Lique-fied Atmospheric Air at the Royal Institution. An experi-ment with liquid ethylene, boiling at — 100 (., showed thatthe evolution of gas was largely increased by warmth, al-though the temperature of the boiling li(iuid remained con-stant, while on idacing the l)ull> containing the liquid ethylenein a bath of licpiid carbonic nnhydriile. lioiling at — HO (.,the evolnlion of gas was greatly diminished. That conductionrather than convection was the chief cause of evaporation wasevident from the fact that if the vessel containing the liquefiedgas was surrounded by a highly vacuous space, by beinicontained in another larger vessel, the .annulus being exhaustedof air. the liquid migh
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
