. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. 152 EEPOKT SMITHSONIAN INSTITUTION, 1907. Almost the entire weight of the locomotive is spring borne, and the behavior of the machine on curves even at high speeds ought to be A^ery satisfactory. The same general construction would lend itself very effectively to the application of high-tension inter-pole direct-current motors, and may be very seriously considered in this connection. The general characteristics of the New York Centr
. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. 152 EEPOKT SMITHSONIAN INSTITUTION, 1907. Almost the entire weight of the locomotive is spring borne, and the behavior of the machine on curves even at high speeds ought to be A^ery satisfactory. The same general construction would lend itself very effectively to the application of high-tension inter-pole direct-current motors, and may be very seriously considered in this connection. The general characteristics of the New York Central type of loco- motive (pi. i), the Batchelder machine as developed by the General Electric Company, is pretty generally understood, and my description will be limited. It consists essentially of a heavy steel frame in which are journaled four main axles, and which is terminated by pivoted. Fig. 4.—Longitudinal section—bipolar direct-current motor. single-axle ponies provided with spring resistance against deflection from the central position. The motors are the gearless type, the arma- tures being mounted directly on the axles (PL VI) and the bipolar field magnets forming an integral part of the main frame; they are, therefore, carried with it by the equalizing springs, and have free motion relative to the armatures. In addition to the regular truck frame, an additional path is provided for the magnetic flux, which passes through all the armatures and field poles in series, by a heavy bar extending the length of the frame, and carried above the motors. Being of the two-pole type (fig. 4) and with a quadrant winding, the motors are extraordinarily free from sparking tendencies; in fact, they are, structurally, natural 1,200-volt machines, although only wound for present operation at 650. So marked is this characteristic, that the brushes, which are 180° apart, instead of being carried on. Please note that these images are extracted from scanned page images that may have b
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