(erielack) Erie Signals - Meadville

[JG at graytrainpix <graytrainpix_@_hotmail.com>]

STEVE:  Very interesting!  My question is, how did the automatic signal mechanism for 516-1 distinguish between a shunted circuit (say because of freight cars or a train in the block) and an open facing-point switch?  I suspect there was some special circuitry and relays attached to that one hand-throw into the yard, as to give a red-over-yellow at an automatic.  (I assume this signal wasn't manually controlled, like those telephone train order signals used at various points on the Erie, the ones with the Pennsy-like position lite signal under the color light signals). 


In theory, a red-over-staggered yellow is not in the 1964 rule book, UNLESS you consider this under Rule 297, as a defacto telephone train order signal.  That rule allows a red over yellow semaphore with number plate, indication being "take siding and when clear of main track report for instructions".   JIM GEROFSKY


Well, westbound at Meadville Yard, signal 516-1 at MP 103.39 was equipped  
to display a RESTRICTING indication when the switches were open into 
Meadville  West Yard.  This allowed the switches to remain open between trains 
and/or  allowed a yard crew to leave the switches open for the next train to 
pull into  the yard without stopping to line the route and tie up the road 
crossings in  downtown Meadville.  This was a two-arm signal with staggered 
heads,  and was equipped with a number plate (516-1).  It could display Clear,  
Approach, Approach-Medium, Stop and Proceed, and Restricting. 		 	   		  
_________________________________________________________________
Windows Live Hotmail gives you a free,exclusive  gift.
http://www.microsoft.com/windows/windowslive/hotmail_bl1/hotmail_bl1.aspx?ocid=PID23879::T:WLMTAGL:ON:WL:en-ww:WM_IMHM_7:092009

	The Erie Lackawanna Mailing List
	http://EL-List.railfan.net/
	To Unsubscribe: http://Lists.Railfan.net/erielackunsub.html

------------------------------