Automatic Coupler For Tractor's PTO

Automatic Coupler For Tractor's PTO POWER TAKE OFFS (PTO'S) Power Take Offs (PTO's) 4-1-32 Without leaving the seat of the tractor, the driver hooks and unhooks the pto shaft simply by moving a lever which controls the new hydraulically-operated automatic pto coupler developed by Charles Thor. The male portion of the automatic coupler, which was first featured in FARM SHOW last fall, mounts on the tractor's pto shaft. It's cone shaped to fit into a special female adapter mounted on the end of the wagon's pto shaft. The drive mechanism on the male end is made of a roller chain sprocket. A random tooth or cog on the sprocket engages a pin on the female end as the two ends come together. A coil spring on the wagon tongue holds the female coupler at the right height to align with the male coupler as the driver backs the tractor. When the wagon has been hitched to the tractor, the male coupler aligns with the female and is engaged by moving the tractor hydraulic lever. The cylinder telescopes a maximum of 12 in. A by-pass valve allows for variation in telescopic movement. Thor says the automatic pto coupler will transfer up to about 25 hp. Once hooked up, it aligns itself and telescopes for turns or uneven terrain. Contact: FARM SHOW Followup, Custom Made Equipment, Charles Thor, Box 654, Hutchinson, Mini. 55350 (ph. 612 587-2380).

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