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From: Daniel Johnson daniel DOT johnson2015 AT outlook DOT com
Date: Tue, 23 Feb 2021 22:25:16 +0000
Subject: 1930 signal question
"InkedJamestown_1930_Sanborn_map_LI.jpg" - image/jpeg, 4032x3024 (24bit)

Here are parts of three pages from a 1930 Sanborn Fire Insurance map of Jamestown, NY, Vol. 1. Railroad West is to the left. The spur for Jamestown Shale Brick leaves the eastbound main further to the east. The tracks immediately to the south of the crossover lead to the Erie Inbound and Outbound Freight Houses.
My questions are related to the circled crossover.
Given the crossover orientation and the normal flow of traffic, these would be trailing point switches and as a result, not useful for mainline trains. Would they have been used by the local switch/freight engines moving cars to and from the Jamestown yards just to the west?
Would there have been a speed restriction for mainline trains passing through the crossover? Would the crossover been signaled with a mid-position upper quadrant semaphore?
If no speed restriction, would the point position be indicated by a device like these in a photo from “The Route of The Erie Limited” by Dirkes and Krause?
Would the local train need to obtain permission to cross from one track to the other?

Thanks for the help,
Dan

Sent from Mail for Windows 10



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