The encyclopædia britannica; a dictionary of arts, sciences, literature and general information . Fig. 39.—Elswick Coned Screw. mechanism. They are all designed on the same principle, witha view to safety and rapidity, and may be regarded as a miniaturesliding breech mechanism. In the older types the lock or its sub-stitute was manipulated by hand, and with electric firing the wiresfrom the tubes were joined up to the loose ends of the firing circuit; 204. ORDNANCE [HISTORY AND CONSTRUCTION. Fig. 41.—12-in. Gun, Breech Mechanism. safety depended therefore on everything being in order and allop
The encyclopædia britannica; a dictionary of arts, sciences, literature and general information . Fig. 39.—Elswick Coned Screw. mechanism. They are all designed on the same principle, witha view to safety and rapidity, and may be regarded as a miniaturesliding breech mechanism. In the older types the lock or its sub-stitute was manipulated by hand, and with electric firing the wiresfrom the tubes were joined up to the loose ends of the firing circuit; 204. ORDNANCE [HISTORY AND CONSTRUCTION. Fig. 41.—12-in. Gun, Breech Mechanism. safety depended therefore on everything being in order and alloperations correctly performed. The gun could, however, befired before the breech was properly secured and a serious accidentcaused; to prevent this all the movements of modern locks are arranged to be automatic, and wireless electric tubes are used sothat immediately the breech mechanism commences to open, thelock itself is moved in the box slide so as to uncover the ventopening. During the first part of this movement a foot on the HISTORY AND CONSTRUCTION] ORDNANCE 205 striker rides up an incline I (fig. 45) on the box slide and thuspushes back the striker from contact with the tube. The ex-tractor described above is actuated at the same time. Most locks
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Keywords: ., bookcentury1900, bookdecade1910, bookidencyclopdiab, bookyear1910
