. Electric railway review . re3—Commutator Grooving Device. The apparatus consists of a substantial oak armaturestand with V-blocks to take the end of the armature shaft,the V-block at the commutator end is adjustable verticallyby a screw attached to hand wheel shown beneath. TheV-block at the pinion end can be adjusted laterally as wellas vertically. At the commutator end is a shelf on which are twoslides carrying the boxes of a buzz saw shaft. The saw is October 15, 1907. ELECTRIC RAILWAY REVIEW 493 1% inches in diameter, .02 inch thick, and is driven at about1000 The saw is fed the l
. Electric railway review . re3—Commutator Grooving Device. The apparatus consists of a substantial oak armaturestand with V-blocks to take the end of the armature shaft,the V-block at the commutator end is adjustable verticallyby a screw attached to hand wheel shown beneath. TheV-block at the pinion end can be adjusted laterally as wellas vertically. At the commutator end is a shelf on which are twoslides carrying the boxes of a buzz saw shaft. The saw is October 15, 1907. ELECTRIC RAILWAY REVIEW 493 1% inches in diameter, .02 inch thick, and is driven at about1000 The saw is fed the length of the commutator bymeans of a hand lever, shown. On the opposite end of theshaft from, the saw is a fly-wheel. It takes about 5 minutesto set the work and 25 minutes to groove a railwayarmature of 117 segments, making a uniformly creditablejob of the grooving. The principle of grooving mica appearsto your committee to be correct, and in some cases moreurgent than others, and recommends that in cases of high. Maintenance and Inspection of Electrical Equipment—Figure4—Commutator Grooving Device. mica or troublesome commutation a trial of grooving micabe made. Motor Lubrication. Reports from 34 roads show 29 lubricating on a timebasis; 3 on a mileage basis and 2 on a combination of thetwo methods. Of the 29 roads lubricating on the time basisthe figures are not in all cases complete or definite, but asnearly as may be determined the periods between lubricationare shown on the following table: Table Smowino Period BerwceN Tiwes Of Lubrication Of 23 RoAOs OA\ 2d*.5 3DAYS ■Boats 5oavs MCEHl 10DAV3 )WCI>I Mo^r., DH/CtKi 2 MO 3mo A ARMATDRe. BEARING-S OldTypeMotors • ••• • •• MOOCRN Tvi»e • ••• • • •• »DUO*N£W •••• •• •• R MOTOR^ OldTypc MOTOR3 • ••• MOQERN • • • OLD *■Ji^^« ::::: • _ TRUCK\j Journal •••• ::::: •••• ■ W COMCI»f5S6RS • •••
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectstreetr, bookyear1906
