Brent L:
1) A hitch requiring a sleeve is on the implement (plow, for instance).
2) An adaptor containing a sleeve is required to attach the implement to the tractor. A pin is then inserted into the plow hitch through the sleeve.
3) Some sleeve hitches are used on fixed drawbars with the hole in the drawbar being the "sleeve".
4) At International Harvester, Cub Cadet (and other mfr's) incorporated a lift into their tractors, to which you must install a sleeve(d) hitch adaptor so you can use your sleeve hitch plow.
5) Brinly-Hardy is a most well know maker of hitch adaptors with sleeves.
6) The illustration Kraig posted originally came from a MTD publication and that upper label of "sleeve hitch" should not be there. At the time MTD was apparently using local college students to edit those pubs. These so called editors obviously didn't know anything about a tractor, much less know anything about implements or accessories. They just mislabeled it. And not being Ag folks, the CCC/MTD gurus didn't either, so it went to print that way.
7) Check TC-113,157 & 193 and for most Cub Cadet models you will find a correct description of the IH 3-point. There is NO mention of sleeve hitch. You need that 3-point lift hitch for a tiller but NO sleeve hitch adaptor is used.....
3-points are just 3-points. Plain & simple.
7) Maybe we can pursuade Kraig to edit that graphic to remove the misleading labeling. You will notice that at the very top and the very bottom the labels are inserted using a totally different font showing the correct labels.
8) Below is shown a front of a Brinly brochure which accurately depicts a Sleeve Hitch.
Myron B
CCSupplyRoom