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Implement Alley Discussion Forum

Old Potato Digger Question

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Pete7

02-01-2006 16:34:44




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Is anyone familiar with the old horse drawn ground driven type of potato digger that uses steel rods to move and shake the potatoes from the soil? I've looked at a few old ones (and own one) and I see that the main drive sprocket is usually in about the center of the implement,just a tad behind the ground driven steel wheels. That seems to power the steel rod conveyor. But on some of the diggers I have seen, there is also a flat detachable type of drive chain that goes to a sprocket at the very rear of the digger. What's that for?? There is a picture of this type of set-up in the Implement Section of this web site... "1942 Massey Harris Potato Digger".

Pete

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willie j

02-02-2006 12:37:24




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 Re: Old Potato Digger Question in reply to Pete7, 02-01-2006 16:34:44  
Pete
My best guess would be that the extra sprocket is to drive an optional accessory conveyer for loading into a wagon pulled beside or behind the digger rather than dropping on the ground.
Willie J



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Handyman

02-01-2006 20:45:10




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 Re: Old Potato Digger Question in reply to Pete7, 02-01-2006 16:34:44  
some diggers were run with two chains on them, the primary chain ran from the shovel up to just past the axle then the spuds would drop onto the secondary chain which would angle down towards the ground to help prevent bruiseing the spuds by limiting the distance the spuds had to drop to the ground



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Pete7

02-02-2006 06:15:55




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 Re: Old Potato Digger Question in reply to Handyman, 02-01-2006 20:45:10  
Hi Handyman. Oh,two chains on some of the diggers! Now I understand. Thanks for the help. Pete



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Allan in NE

02-01-2006 17:08:09




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 Re: Old Potato Digger Question in reply to Pete7, 02-01-2006 16:34:44  
Pete,

The bed chain is always driven from the rear sproket, which is driven from the intermediate shaft working off that axle.

The blade lift handle should also incorporate a disengagement clutch of some sort and this would be near the center of the machine close to the axle.

Allan



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Pete7

02-01-2006 19:51:33




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 Re: Old Potato Digger Question in reply to Allan in NE, 02-01-2006 17:08:09  
Hi Allan. Appreciate your response but I still don't understand completly. I see some diggers without any chain to the rear sprocket. They seem to be driven just by the sprocket near the drive wheel. What I don't get is why the bed chain would need to be driven by sprockets in two different locations? Or why some diggers don't use the rear sprocket?
Some times it's just hard to figure out old equipment that you've never seen when it was new,complete and in use.
Pete

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