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GOODELL-PRATT CO. AUTOMATIC FEED CHAIN DRIVE

Sku: 253C
Sale Price: $125.00

GOODELL-PRATT CO. AUTOMATIC FEED CHAIN DRIVE -  WHILE DRILLING A HOLE THIS IS USED TO GRADUALLY ADJUST THE CHAIN TENSION TO INCREASE THE DEPTH OF THE HOLE. THIS ONE HAS AN ADJUSTMENT TO CHANGE THE RATE OF CHAIN TENSION. PATENT DATE ON THE CHUCK (1895) AND THE ROTATIONAL ADJUSTMENT MECHANISM (1910).


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