Hartford Steam Boiler Inspection and Insurance Company · Hartford, Ct. : Hartford Steam Boiler Inspection and Insurance Co · leaf 95
exist with respect to driven grounds, due probably to the 82 THE LOCOMOTIVE J^ small contact area between the pipe (or pipes) and moist earth. It is alsooften necessary with respect to driven grounds to drive several pipesinto the ground and connect them all together by soldered leads in orderto… … Figure I the resistance to ground, the better will be the protection that is afforded.There are, of course, many views on this particular point and a greatmany studies are in progress on the subject at this time. A great deal has been said and written about the value of choke coilsused in…
Locomotives · Steam-boiler explosions
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