Heavy Duty Boston & Lockport Block & Tackle Double Pulley Hook 7 Star Pat'd 703

Up for sale is an antique block and tackle set with a double pulley.  It is marked "B&L Co 7 703 Pat'd 640". Also has a Star. We believe the B&L stands for Boston and Lockport. Set features a hook, two pulleys, and one mounting hook and loop. There is a place for an additional mounting hook. Block and tackle shows aging and wear with patina and some pitting. Whole thing weighs in at about 10 lbs. Wheels have a diameter of about 3 1/2", and a depth of about 1". Pulley measures about 17" long, including hook and loop.

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