At Sinclair, about 8 mi east of Deer Lodge, Mont, 20-lever mechanical interlocking, at crossing of Chicago, Milwaukee, St Paul and Pacific and Northern Pacific, has been replaced by automatic plant which includes one Union Model-22 power switch machine for operating movable point frogs at crossing, four smash-boards, each operated by means of Union style-T2 mechanism, and color light home and distance signals on each line.
Automatic plant replaces mechanical interlocking
Ry Signaling
Railway Signaling ; 30 , n 7
1937
Aufsatz (Zeitschrift)
Englisch
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