Railway Signaling a Comprehensive Treatise On Modern Methods of Railway Signali
Railway Signaling a Comprehensive Treatise On Modern Methods of Railway Signali
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The secondary coil is connected directly to a small induction motor provided with suitable gearing to cause the rotation of the armature to lift the indication latch. The appa- ratus for producing the variations in the current should be located at the switch, so that the circuit closer actuated by the switch mech- anism for closing the indication circuit may be between this appa- FIG. 22 ratus and the transformer. A convenient means for producing the variations in the current is afforded by a c...ollector ring on the arma- ture shaft of the switch operating motor, connected to one segment of the commutator. At the end of the switch movement, after it has been locked, and after the motor has been disengaged from the mechanism by the clutch interposed between the motor and the mechanism for the purpose, the operating wire is switched from the operating brush to the brush bearing on the collector ring. The motor armature will continue to rotate, driven by the current enter- ing by way of the collector ring and passing out by way of the brush connected to the common wire, and as the segment to which the ring is connected alternately approaches and then recedes from the common brush, the current in the circuit including the primary coil of the transformer will rise and fall alternately.
What to read after Railway Signaling a Comprehensive Treatise On Modern Methods of Railway Signali?
You can find similar books in the "Read Also" column, or choose other free books by Burke Thomas to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The secondary coil is connected directly to a small induction motor provided with suitable gearing to cause the rotation of the armature to lift the indication latch. The appa- ratus for producing the variations in the current should be located at the switch, so that the circuit closer actuated by the switch mech- anism for closing the indication circuit may be between this appa- FIG. 22 ratus and the transformer. A convenient means for producing the variations in the current is afforded by a c...ollector ring on the arma- ture shaft of the switch operating motor, connected to one segment of the commutator. At the end of the switch movement, after it has been locked, and after the motor has been disengaged from the mechanism by the clutch interposed between the motor and the mechanism for the purpose, the operating wire is switched from the operating brush to the brush bearing on the collector ring. The motor armature will continue to rotate, driven by the current enter- ing by way of the collector ring and passing out by way of the brush connected to the common wire, and as the segment to which the ring is connected alternately approaches and then recedes from the common brush, the current in the circuit including the primary coil of the transformer will rise and fall alternately.
What to read after Railway Signaling a Comprehensive Treatise On Modern Methods of Railway Signali?
You can find similar books in the "Read Also" column, or choose other free books by Burke Thomas to read onlineMoreLess
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