. Il giornale ferroviario di strada . FIG 1.- VISTA GENERALE DEL MOTORE E DELLE PARTI. Un motore a riduzione singola a sei poli, rivestito in ferro da 30 cavalli, progettato in modo particolare con un occhio alla semplicità e non riparabile. L'armatura è del tipo ad anello Pacinotti, resa molto leggera a causa della costruzione a sei poli, ed è avvolta con un avvolgimento a tamburo modificato, così sistematàche una qualsiasi bobina può essere rimossa senza la necessità di rimuovere alcuna delle altre. Le bobine vengono tornite e taccate, quindi poste in posizione nelle fessure, ciascuna bobina essendo della stessa dimensione, e simmetricamente disposte rispetto alle altre bobine

• Collaboratore: Reading Room 2020 / Alamy Foto Stock
• ID dell’immagine: 2CRFBK7
• Dimensioni dei file: 7,2 MB (413,8 KB Download compresso)
• Liberatorie: Modello - no | Proprietà - no
• Dimensioni: 1892 x 1321 px | 32 x 22,4 cm | 12,6 x 8,8 inches | 150dpi

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. The Street railway journal . FIG 1.—GENERAL VIEW OF MOTOR AND PARTS. a six pole, iron clad, single reduction motor of thirty horsepower, designed especially with an eye to simplicity andease of repair. The armature is of the Pacinotti ring type, made very light by reason of the six pole construction, and is wound with a modified drum winding, so arrangedthat any one coil may be removed without the necessityof removing any of the others. The coils are lathe woundand taped, then laid in place in the slots, each coil being of the same size, and symmetrically arranged with regardto the other coils. As there are no wires through the inside of the arma-ture, it is left with a very large opening which securesgood ventilation and cool running. The commutator is built in the most substantial style, being twelve inches in diameter, with a four inch face.The bars, which are made of hardened copper one andone fourth inches deep, are bedded on mica, and held by. FIG. 2, -END VIEW OF ARMATURE AND MOTOR, ONE COIL IN PLACE. SHOWING heavy clamps insulated with mica covers for the fulldepth of the bars, thus making it practically impossiblefor a bar to work loose or become high. The attach-ment of the commutator is secured by four machine boltsfitting in T slots in a projection of the armature spider.This method does away with keys, keyways and loosecommutators. The armature shaft is of steel, two and one sixteenthinches in diameter and is pressed into the bearing sleeves, which are made of hardened steel four and a half inchesin diameter by five and a half inches long for pinion end, and four inches long for the commutator end. The field magnet and frame consists of but twocastings, has six poles, three consequent and three salient, and carries three field coils, which are wound with a wireof rectangular section. The lower half of the field magnet