. Air brakes, an up-to-date treatise on the Westinghouse air brake as designed for passenger and freight service and for electric cars . Fig. 143. Sectional Views of Type D-EGj\Iotor-Driven Air Compressor the crankshaft, so that the angularity of the connecting rod may bereduced during the period of compression, thereby reducing thevertical component of the thrust and consequently the wear on the 184 AIR BRAKES cylinders. The shaft must, however, always run with the com-pression part of the stroke on the upper half revolution, , clock-wise when viewed from the gear end. The c
. Air brakes, an up-to-date treatise on the Westinghouse air brake as designed for passenger and freight service and for electric cars . Fig. 143. Sectional Views of Type D-EGj\Iotor-Driven Air Compressor the crankshaft, so that the angularity of the connecting rod may bereduced during the period of compression, thereby reducing thevertical component of the thrust and consequently the wear on the 184 AIR BRAKES cylinders. The shaft must, however, always run with the com-pression part of the stroke on the upper half revolution, , clock-wise when viewed from the gear end. The crankshaft I4 is made ofheavy forged steel and, besides having ample end bearings 13 andi^ of bronze, is provided with a large babbitt-lined center bearingwhich is a part of the crankcase cylinder casting 17. Lubrication, The parts mentioned above are all lubricatedfrom a bath of oil, poured into the dust-proof crankcase through aspecial fitting 18, which acts as a gage of the oil level; the fitting is A|R0I8CHARG£.. Fig. 144. Part Section of Westinghouse Type D-EG Motor-Driven Air Compressor closed by a suitable screw plug 19 which is secured to it by means ofa chain. On the overhanging end of the crankshaft is the gearwheel 20, made of semi-steel mixture in two halves and boltedtogether to form the well-known herringbone type of gear. Itis forced onto the shaft over a square key and secured by the nuts , The motor is of the series type with a cast-steel magnetframe 50, having a prolongation on the commutator end, providedwith an opening to permit of ready access to the brushes and com-mutator. This opening has a door 51 hinged to the frame andtight-fitting so as to exclude rain and dust. In the ends of the AIR BRAKES 185 frame are centered housings 52^ 53, and 79, which carry the arma-ture bearing at the ends of the motor; 52 and 79 are provided withan oil well with filling hole so located that it is impossible to flood theinterior of the motor with oil. Cast-iron bea
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Keywords: ., bo, bookcentury1900, bookdecade1910, bookidairbrakesuptodat00ludy
