I found the pictures below on Ebay and I am posting them here with permission from the original owner.
The pictures show a Brother KH212 knitting machine attached to a KR212 ribber.
Some sources say that similar ribbers are used for the vintage knitting machines up to the model number KH218. For example, a manual describes that ribbers for machines KH212-KH218 are attached in a similar way:

Enjoy the pictures below while I find out more about these unique ribbers.










