In
1927-28, the LIRR, under Pennsylvania jurisdiction, began to install
"unattended block station" signals lower down on the semaphore
signal mast(s). When the block office was unmanned, usually after
daytime hours, these signals took precedence along with the issuance of a Pennsylvania-style
"K" clearance card issued from a block office that WAS manned.
The next day, when the operator reported for duty, the semaphore signals
were again used.
When a
block office at a station was no longer required, the semaphore signals
were no longer required and block operators no longer assigned. The
semaphore blades were removed from the signal mast, and the mast was
either cut down to a shorter length or a short mast was installed, both
for the purpose of supporting the unattended block station signals, which
were then operated from a manned location.
As the Weber image (above right) shows the semaphore blades removed and
both the mast and access ladder shortened, and as I do not see the
standard style unattended block station signals lower down on the mast,
I'm going to make the assumption that those "discs" atop the
mast are an odd form of unattended block station signals: one red
and one green facing in each direction. Info: Dave Keller
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