. Electrical world. e automobile typeand are those built ordinarily by the Hertner Company as theirstandard 2;/2-hp for automobile purposes. They are illustrated inFig. I and are multi-polar with forged steel field yoke and laminatedpoles. Ball bearings are provided so constructed as to take care ofend thrust as well as radial pressure. Special heads are used sothat the motors are water-tight up to the level of the bearings; theupper half of the front head being left open so as to expose the com-mutator and brushes, over which a removable cover is motors are compound wound and des
. Electrical world. e automobile typeand are those built ordinarily by the Hertner Company as theirstandard 2;/2-hp for automobile purposes. They are illustrated inFig. I and are multi-polar with forged steel field yoke and laminatedpoles. Ball bearings are provided so constructed as to take care ofend thrust as well as radial pressure. Special heads are used sothat the motors are water-tight up to the level of the bearings; theupper half of the front head being left open so as to expose the com-mutator and brushes, over which a removable cover is motors are compound wound and designed for high controllers shown in Fig. 2 are arranged for three forward and filled an order for 30 special motors and controllers for this purpose,to be used on the launches. The boats in question are under con-struction by the Truscott Boat Manufacturing Company, of , Mich., and each will seat about 30 persons. Current willbe furnished by storage batteries, a 88-volt Willard. FIG. 2.—CONTROLLER. two reverse speeds. The first speed forward is on 44 volts with aresistance in series with the armature. The second speed cuts outthe resistance. This yields the ordinary rate of running at aboutAVz miles per hour when the motor makes 600 For emergen-cies, the battery is thrown in series, when the motor operates onthe full 88 volts and the speed of the boat is hit up to about 6J^miles. The backward speeds are on the 44 and 88 volts, correspond-ing to the second and third speeds forward. When the controllerhandle is in the off position the battery is series-connected and canbe charged from a regular no-volt circuit. Exhaustive tests havebeen made on these equipments, resulting in the St. Louis contract. Rubber Compound for Electrical Purposes. A new insulating material has recently been put upon the marketby the Electric Rubber Manufacturing Company, which is intendedto take the place in some degree of full rubber for the productionof ba
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectelectri, bookyear1883
