This hoist was made by the FORD CHAIN & BLOCK MFG CO Philadelphia Pa. It is patented Mar 29 1909. It seems to be rather sophisticated in design.
I do not know much about these things. It seems to work ok.The chains move freely through the pulleys. I do not however guarantee function and safety in use of this device. The item "ANTIQUE FORD CHAIN & BLOCK HOIST 1 1/2 TON 1909 FARM INDUSTRIAL CRANE LIFT TRUCK" is in sale since Wednesday, July 18, 2018. This item is in the category "Collectibles\Tools, Hardware & Locks\Tools\Pulleys, Block & Tackle". The seller is "tagurit" and is located in Aston, Pennsylvania.
This item can't be shipped, the buyer must pick up the item.