GM&O 1106 Switching on Union Station Leads Next to Pennsy Coach Yards

Name	Type	Comments	Date

Tim Huemmer	General	All kinds of cool details in this shot. I like the Southern Containerized frieght container back there in the PRR Freight house trackage.	3/29/2007 2:46:51 PM

Gregg Bartley	General	I'm not at all certain I understand how those switches operate.	4/18/2007 2:51:44 PM

Marty Bernard	General	Those are double-slip switches. A train can come at it from any direction and either continue straight or take one diverging route. Go to a really good RR hobby shop and they may have one in HO that you can play with and puzzle on. Oh yes, they are also called puzzle switches. Obviously they can do many types of train moves in a compact space, thus their value. As you would expect they require continuous maintenance. The lack of snow/ice on them means they are being kept warm by natural gas heaters.	4/18/2007 5:59:10 PM

Marty Bernard	General	One further comment. These have movable frogs because a derailment here is a disaster because of the number of trains (passengers) that would be delayed. If the switch is set wrong for the next move the interlocking plant will move two sets of points and all four frogs. The tower operator would have to pull out or push in one lever (handle) and then pull the appropriate signal lever.	4/19/2007 12:04:39 AM

Chris Lubinski	General	Nice photo! That Pennsy freight house is a memory to all who knew Chicago!	8/14/2013 8:58:09 AM

GM&O 1106 Switching on Union Station Leads Next to Pennsy Coach Yards
Date: 12/26/1961	Location: Chicago, IL Map	Views: 1999	Collection Of: Marty Bernard
Locomotives: GMO 1106(RS1)			Author: Marty Bernard

Picture Categories:		This picture is part of album: Railfan44's CN and pre-CN Shots

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