The Electrician

The Electrician

4.11 - 1251 ratings - Source

1a#39;7) show Berry and Rischa#39;s patent automatic isolating device for falling trolley, telegraph or telephone wires. ... One or more of these are connected up to a master clock, which sends a current impulse every five seconds through the recorders. ... 26) show an ordinary motor converted for regenerative control, a couple of suitable controllers and a number of diagrams, ... Those who still doubt will be shown a series of brake shoes (both of the wheel brake and of the slipper brake) takenanbsp;...

Title:The Electrician
Publisher: - 1905


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