Kirkman, Marshall Monroe, 1842-1921 · New York, Chicago, The World Railway Publishing Company · leaf 233
LOCOMOTIVE APPLIANCES. 215 the opposite direction, this film of scale, occupying the space, offers resistance to the fibre of the metal resuming its normal position. In the meanwhile scale is deposited in the open fibre of the metal on opposite side of stay-bolt, and as this process con- tinues,… … Fig. 1. metal ib more Johnstone Flexible Stay Bolt. elastic and yields to the change of position without opening the fibre and exposing it to the entrance of this deposit of scale. To overcome this difficulty many other mechanical devices have been designed, one of which, known as the Johnstone…
Railroads · Transportation
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