Brother KH601 is an 8-push-button Japanese knitting machine manufactured in the very early 1970s. It is a standard gauge with 200 needles.
I did not have a chance yet to work on this machine but it is almost identical (in functions) to Brother KH588 and Brother KH710. Brother KH601 differs from KH585 by its color and by its plastic end caps. From KH710, KH601 differs by color.
There is one more feature that makes KH601 stand out… It is a sliding holding cam lever (the slider right below the tension dial with the numbers 1 through 5). I’ve only seen a similar mechanism on some Empisal knitting machines and on Brother KH800.
Enjoy the pictures below (provided by a generous Internet user) in the mean time.