Edison, His Life and Inventions by Frank Lewis Dyer;Thomas Commerford Martin
page 49 of 844 (05%)
page 49 of 844 (05%)
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this day in my laboratory over forty years later."
It was at Stratford that Edison's inventiveness was first displayed. The hours of work of a night operator are usually from 7 P.M. to 7 A.M., and to insure attention while on duty it is often provided that the operator every hour, from 9 P.M. until relieved by the day operator, shall send in the signal "6" to the train dispatcher's office. Edison revelled in the opportunity for study and experiment given him by his long hours of freedom in the daytime, but needed sleep, just as any healthy youth does. Confronted by the necessity of sending in this watchman's signal as evidence that he was awake and on duty, he constructed a small wheel with notches on the rim, and attached it to the clock in such a manner that the night-watchman could start it when the line was quiet, and at each hour the wheel revolved and sent in accurately the dots required for "sixing." The invention was a success, the device being, indeed, similar to that of the modern district messenger box; but it was soon noticed that, in spite of the regularity of the report, "Sf" could not be raised even if a train message were sent immediately after. Detection and a reprimand came in due course, but were not taken very seriously. A serious occurrence that might have resulted in accident drove him soon after from Canada, although the youth could hardly be held to blame for it. Edison says: "This night job just suited me, as I could have the whole day to myself. I had the faculty of sleeping in a chair any time for a few minutes at a time. I taught the night-yardman my call, so I could get half an hour's sleep now and then between trains, and in case the station was called the watchman would awaken me. One night I got an order to hold a freight train, and I replied that I would. I rushed out to find the signalman, but before I could find him and get the signal set, the train ran past. I ran to the telegraph office, and reported |
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