This machine also doesn't have step pulleys on the motor and has no pulley on the gear box shaft. Apparently you just have to swap belts when you want to go from wood to metal and back. However, there is apparently no way to disengage the main shaft pulley once you have engaged the gearbox.
One drives the internal gearbox and one drives the main shaft. The modern machines use two belts, one for the gear box and one for the main shaft. On this old guy, there is a lever which you turn which causes the pickle fork to move in or out which engages or disengages the gear train. On the modern version of this saw, there is a knob on the main shaft you push in or pull out to engage/disengage the gear train. I did not count the other set, but it looked like about 4.25:1 or so as I twisted the shaft.
It looks like the gear box provides approximately a 16:1 reduction with another approximately 2:1 reduction with the pulleys. With that gear I can easily get it running metal only. I have run the math and determined the missing dear is an 80 tooth 12DP gear, which I have ordered. That pickle fork is broken, but I think it will be a simple enough fix. It uses a pickle fork type devise to engage and disengage the gear train. It is missing the gear on the main shaft, but it has the rest of the gears. Upon inspection, it is an old version of the metal/wood unit. However, after I got it home, I noticed it had a gearbox at the base, though it was not hooked up. I bid on it believing it was a regular high speed bandsaw.
There are no markings on it at all except for casting marks which all have the prefix LBS. I picked up a very old Delta 14" bandsaw at a local machine tool auction.
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