. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . r thatthe motor cannot become oil flooded. Two of the held poles are part of thecompressor frames and the other twoare made up of laminations of softsheet steel riveted together and boltedto the frame, thereby securing in placeinsulated and well protected field coilsalso. The armature is built up of electricsoft sheet steel punchings with ac-curately spaced slots in which are im-bedded form-wound coils of uniformsize. The commutator is of liberal length,with deep segments insulated with thebe
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . r thatthe motor cannot become oil flooded. Two of the held poles are part of thecompressor frames and the other twoare made up of laminations of softsheet steel riveted together and boltedto the frame, thereby securing in placeinsulated and well protected field coilsalso. The armature is built up of electricsoft sheet steel punchings with ac-curately spaced slots in which are im-bedded form-wound coils of uniformsize. The commutator is of liberal length,with deep segments insulated with thebest grade of mica, and to prevent anymovement that might damage the leads,special care is taken in supporting themfrom coil to commutator by a mouldedinsulating ring resting firmly on the com-mutator nut. while the coils are bandedin the core and on the ends with steelwire insulated from the coils. The twobrush holders are mounted on an ad-justable cast iron yoke and are insu-lated from the yoke by fibre, fuller-board and mica washers. The carbonbrushes slide in machined ways and are BPtJ BO 63 55^. FIG. 2. END VIEW OF CRANK SHAFT AND MOTOR. FIG. 3. SECTIONAL VIEW OF MOTOR DRIVENCOMPRESSOR WITH COVER REMOVED. pending upon the weight of the car,the kind of service in which it is em-ployed and the air operated devicesinstalled. The illustrations are of the typeD-EG, and Fig. 1 shows a horizontalsection and elevation, the cover being opening to permit of ready access tothe brushes and commutator. The doorof this opening is tight fitting for out-door service and ventilated for indoorwork. The armature bearings at theends of the motor are carried in cen-tered housings at the ends of the frame held in contact with the commutatorby a coiled spring of bronzed ribbon,thus giving a uniform tension duringthe life of the brush. These compressors are installed inthe suspension cradles in a manner thatthey may be readily removed if repairs November, 1915. RAILWAY AND LOCOMOTIVE ENGINEERING. 3
Size: 1560px × 1601px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookidrailwaylocom, bookyear1901
