Overhead Contactors for Switch Setting.

[Jim Holland]

Greetings!

	Ohio Brass offers most of the parts used by PRCo for overhead wire, but
they do not have any kind of contactors.
	The simple contactor with two metal bands about 2-feet in length that
are parallel to each other and straddle the trolley wire but are
naturally insulated from everything was commonly used for signal
setting.
	The more sophisticated contactor for setting switches was initially
similar in design to the above contactor but much heavier since more
current is drawn for switch-setting.  The later design used to the end
of trolley pole service in Pgh. was quite streamlined looking.

	Who manufactured these overhead contactors?

	And who were some of the competitors to Ohio Brass?

James B. Holland
------- -- ---------
        Pittsburgh Railways Company (PRCo), June of 1949 -- June of 1953
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