f the improvement, Fig. 2 A CHEAP AND EFFICIENT MOTOR. representing a face view of the friction wheel, with The ease and simplicity with which such a motor as the sockets and heads of the bolts in the friction the one shown in the illustration may beset up and Her captain stated that the coal was… … {KT a si s al tus in use at the Royal Research Laboratory, BOLGIANO’S “LITTLE GIANT” WATER MOTOR. Berlin, for testing the comparative hardness manner on the shaft, to be thrown into frictional con- of different materials. The substance to be tact with the flange of the hoisting drum or other tested…
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