Antique Industrial Salvage

Narragansett Machine Co. (Providence, RI)

pulley pair 

the company primarily made woodworking & metalworking machinery

they also produced exercise equipment

that equipment included a wall mounted weight lifting machine that utilized these pulleys

the last two images are William L. Coop's patent (May 24, 1887) for the machine that was made by N.M. Co. (reference only)

these have a wide range of possibilities in repurposing

buyer to pay $19.99 shipping

thanks for looking!