. Electric railway gazette . Electric Railway Ga:ctt> FIG. I.—EICKEMEYER COIL. partially successful. There is no reason why formersproperly designed should not at once shape the coil sothat it will readily and symmetrically pack in place. TheEickemeyer coil, as will be noticed, has two spiral con-nectors lying in different planes. It is not feasible to formthe coil in one complete motion when it is made of stiffwire; coils made of soft, flexible wire are very simple asthey may be wound upon a properly shaped wooden block,but the stiff wire coils are more difficult, and the appara-tus herein
. Electric railway gazette . Electric Railway Ga:ctt> FIG. I.—EICKEMEYER COIL. partially successful. There is no reason why formersproperly designed should not at once shape the coil sothat it will readily and symmetrically pack in place. TheEickemeyer coil, as will be noticed, has two spiral con-nectors lying in different planes. It is not feasible to formthe coil in one complete motion when it is made of stiffwire; coils made of soft, flexible wire are very simple asthey may be wound upon a properly shaped wooden block,but the stiff wire coils are more difficult, and the appara-tus herein described is intended to facilitate the formationof such coils. If the armature be of the toothed type, as is frequentlythe case in railway work, there need be but one wire to acoil. If, however, it be of the smooth-core type, theremust be two wires at least to every coil. This is so forseveral reasons : First, because when the surface of the. FIG 2. —FORMER. armature is completely covered with wire the coil musthave a small dimension to turn on edge when passing overthe head, otherwise there will not be sufficient room ; sec-ond, because the thin dimension, being in the line of the radius, the gap space is much reduced ; and, third, becausethe radiating surface of the armature is largely , surface-wound drums are becoming quite un-
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishernewyo, bookyear1895
