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Twist-Proof Truck Hoist
"You can actually chain either side down at any level, then apply full lifting power without twisting or damaging the body," says Orville Stockwell, inventor and manufacturer of a new twist-proof truck hoist called the TPT system.
The patented hydraulic system is self-correcting for twist both when raising and lowering. "It differs from conventional telescoping hoists in that it prevents twist without use of a split pump, proportioner, flow meter, balancer or other devices, none of which provide the rigidness and reliability of the TPT system," says Stockwell.
The "chain test" he uses to demonstrate the twist-proof capability of his hoist would probably damage most conventional truck hoists. "We tell owners of our twist-proof hoist to chain one side, then hit the lever to raise the box as fast and far as it will go. Any owner of our twist-proof hoist who'll show this chain test to three other truck owners gets a free log chain worth about $30," says Stockwell.
The TPT system is available both for side-dump truck hoists, such as those commonly used for sugar beets, and for rear-dump telescoping hoists.
All bolts and fittings, together with do-it-yourself instructions, are packaged with each unit, Stockwell points out.
Three rear-dump models of the twist-proof hoist are available to fit standard trucks (simple or tandem axle) with bodies ranging from 12 to 20 ft. long. A 20,000 lb. hoist (actual payload capacity) for a 16 ft. box sells for $995, FOB the factory. A 30,000 lb. hoist sells for $1,250 and a 34,000 lb. model for $1,380. All models come with special steel sleeves to add strength to the rear truck frame.
For more details, contact: FARM SHOW Followup, Orville Stockwell; Stockwell Mfg.; 536 Ave. S.; Greybull, Wyo. 82426 (ph. 307 765-4711).

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1977 - Volume #1, Issue #2