. Electric railway journal . of trouble in allthe previous types of blow-outs discussed. The de-flector plates of this type are bolted together with ironrods and separated by fiber spacing blocks so that theyare held firmly together with no tendency to split, thewhole forming a very substantial construction. In alater design the holes for the rods are slotted so thatany single arc deflector can be removed and replacedwithout disturbing the remaining ones. The Metallic Shield Type of Blow-Out A somewhat unique but efficient type of blow-out isused in the controllers manufactured by Dick, Kerr &
. Electric railway journal . of trouble in allthe previous types of blow-outs discussed. The de-flector plates of this type are bolted together with ironrods and separated by fiber spacing blocks so that theyare held firmly together with no tendency to split, thewhole forming a very substantial construction. In alater design the holes for the rods are slotted so thatany single arc deflector can be removed and replacedwithout disturbing the remaining ones. The Metallic Shield Type of Blow-Out A somewhat unique but efficient type of blow-out isused in the controllers manufactured by Dick, Kerr & a less effective blow-out for the contacts most distantfrom the blow-out coil. This was brought about byusing two blow-out coils, one on either side of the con-troller, running the entire length of the contacts. It isknown as the field type blow-out on account of itsresemblance to the field of a two-pole motor. An ac-companying illustration shows the arrangement of thecoils, which are so wound that the faces of the pole. Electric DICK-KERR METALLIC SHIELD BLOW-OUT
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
