Wondering if this pulley was a lineman's pulley. The pulley says "BELL SYSTEM" on it along with a "3" and a star. Also wondering approx. how old this pulley is.
The pulley is about 7" long.
ANSWER: This is part of a block and tackle set up for pulling line wires taut for splicing or proper sagging. One would place a wire grip on each end of the broken wire and pull them together. Something that could never be done by hand. The wires could then be twist-spliced using a pair of the special splicing pliers, or a NICO splice placed and crushed with the Nicopress
Thanks to Bren Burger for the information