. Electric railway gazette . Fig. 3 shows an end elevation of the motor withone whetl taken away. 5 is a cast-iron U-shapedframe, the rounded end being journaled on thecar axle in the ordinary way. Swinging freelybetween the arms of this U is the motor A,trunloned by its bearings, but not touching the PIG. 6. armature may be removed, if desired, from be- core A is built on a separate sleeve, which re-low; or, if the motor should not be over a pit, the ceives the shaft B. This shaft, when worn out,upper half may be swung up and the armature can be replaced by removing the nut C, drawingremoved
. Electric railway gazette . Fig. 3 shows an end elevation of the motor withone whetl taken away. 5 is a cast-iron U-shapedframe, the rounded end being journaled on thecar axle in the ordinary way. Swinging freelybetween the arms of this U is the motor A,trunloned by its bearings, but not touching the PIG. 6. armature may be removed, if desired, from be- core A is built on a separate sleeve, which re-low; or, if the motor should not be over a pit, the ceives the shaft B. This shaft, when worn out,upper half may be swung up and the armature can be replaced by removing the nut C, drawingremoved from above. out the shaft and inserting a new one, thus savingBy referring to the figures it will be seen that the expenseof tearing the armature down and re-all the bearing caps come off from below, and all building, as not a wire connection is PIG. CAST IRON MOTOR, axle. The motor is then supported at the rear byspiral springs, G, between lugs on the frame andthe arms of the U, and at the front end is sup-ported by a swinging arm from the ordinaryspring truck bar D. It can be seen that, withthis suspension, the motor rides freely on springs,readily adjusting itself to varying conditions. the bolts pass down from above; and, should anut come off, no part of the motor can fall. Thebolts are not made to take the weight of themotor, and the nuts are all locked with pins. The bearings are entirely outside of the motorcasing or frame, as shown by Fig. 5. They aresolid shells, A, filled with the best babbitt and The commutator is on a tapered portion of theshaft, the same as the pinion, and can be moreeasily drawn off for refilling. Both commutatorand pinion are held in place by nuts properlylocked by an ingenious lock washer. This motor contains all the long-tried con-structional points which experience has proven to 158 STREET R
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License: Licensed
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Keywords: ., bookcentury1800, bookdecade1890, bookidelectricrail, bookyear1895
