Scientific American Supplement, No. 288, July 9, 1881 by Various
page 127 of 160 (79%)
page 127 of 160 (79%)
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lamps were not all good, and it was found that they required careful
adjustment, but when once they were got to go right they continued to do so, and have, up to the present, shown no signs of deterioration, although the time during which they have been in operation is nine months. The first outlay has been as follows: Engine and fixing, including shafting and belting................................ L420 Dynamo machine......................... 400 Lamps, apparatus, and conducting wire . 384 ------ L1,204 The cost of working has been, from June 22, to December 31, during which period the lights were going on 87 nights for a total time of 359 hours: L s. d. Carbons............................... 18 9 0 Oil, etc.............................. 4 11 6 Coal.................................. 11 14 0 Wages................................. 34 7 6 ---------- L69 2 0 being at the rate of 3s. 10d. per hour of light. Now, the consumption of gas in the court would have been 4,800 cubic feet per hour, which, at 3s. 4d. per 1,000 cubic feet, would amount to |
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