Scientific American Volume 65 Number 20 (November 1891) . f construction and the ope-ration of this engine have been carefully observed bypractical engineers, and that, considering the dimen-sions of the boat, her speed, the smallness of the power,the ease with which she passes the centers, the absenceof vibration while running, and the very few workingparts in motion, the engine is a notable success. Shecan be run at a very high velocity without injury orrisk, and is designed to be very economical in cost andin weight and space. This engine has been recentlypatented in the UnitedStates and fo
Scientific American Volume 65 Number 20 (November 1891) . f construction and the ope-ration of this engine have been carefully observed bypractical engineers, and that, considering the dimen-sions of the boat, her speed, the smallness of the power,the ease with which she passes the centers, the absenceof vibration while running, and the very few workingparts in motion, the engine is a notable success. Shecan be run at a very high velocity without injury orrisk, and is designed to be very economical in cost andin weight and space. This engine has been recentlypatented in the UnitedStates and foreigncountries by Mr. , of New West-minster. day more for motor men and electric car conductorsthan we do for horse conductors and drivers. Thathas been our experience up to this time. We saveabout 25 per cent. Our men are expected to work 10hours a day, but we really get anywhere from 7^ to9)^ hours a day. The amount of power consumed isconsiderably more, on account of the slow speed withwhich the motor cars have to operate in the downtown. one. From our tests we find that the amount of powerconsumed on a level track is very little more for thelong car than with the short one ; in fact, the weightwhich we have in the car seems to have little to dowith the current consumed, as long as the car is on alevel track. From tests, we found that with a longcar empty, weighing, perhaps, 18,000 pounds, using acertain average amount of current, the same car loadedwith 15,000 pounds of weight used very little additionalpower until we come to a grade. We have experi-mented in this matter, and could hardly tell from thereading which was the empty and which was theloaded car. That being the case, it does not cost muchmore to operate long cars than short cars. Again, theycarry nearly double the people, and do it with thesame expense for conductors and drivers. Just howmuch more heavy cars will increase the track repairsof course we cannot tell at present. m t • > » ? A Poiso
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectel, booksubjectengine
