. The railroad and engineering journal . switches under the control of a single operator in acentral post or station. 170 THE RAILROAD AND [April, 1S89. XII.—THE SKRVITTAZ CAM-LOCK. The object of this apparatus, which has been placed inthe central signal-house of the station at Savone, on theMediterranean Railroad in Italy, is to obtain : 1. With a primary transmission, but with two distinctlevers, the movement of the switch and the blocking ofthe switch-rails by means of cams. 2. With a second transmission the return locking of thelock-lever, in such a way that it will be impossible to move w
. The railroad and engineering journal . switches under the control of a single operator in acentral post or station. 170 THE RAILROAD AND [April, 1S89. XII.—THE SKRVITTAZ CAM-LOCK. The object of this apparatus, which has been placed inthe central signal-house of the station at Savone, on theMediterranean Railroad in Italy, is to obtain : 1. With a primary transmission, but with two distinctlevers, the movement of the switch and the blocking ofthe switch-rails by means of cams. 2. With a second transmission the return locking of thelock-lever, in such a way that it will be impossible to move we replace mechanical connections by hydraulic or elec-tric transmission. In these cases the principle of returnlocking continues in force, and its advantages are stillmore marked, since it gives means of controlling safely amovement made by the aid of forces of which some en-gineers are still doubtful. The points to be examined in the Servetta/ system are :The working apparatus, the wedging cams, and the ap-paratus for return it, and to free the other apparatus interlocked with it, it theswitch-rails are not at the end of their course and properlywedged. An apparatus of this kind, working electrically both forthe movement of the switch-rails themselves and for thecontrol of the return movement, is on trial on the NorthernRailroad of France. As will be seen, this system differs from all those of
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectrailroa, bookyear1887
