Eliminating backlash in screw-nut drives 1

The nut block consists of yellow main nut and green additional one. There is a screw joint of small lead between the nuts. Turn the green nut to eliminate the backlash. The red latch positions the green nut when merging with the teeth on the green nut. The tooth number should be as large as possible for fine adjusting.
The video first scene shows the possible motion of the nut block in case of large backlash.
This video was made based on picture 8.39, page 603 of the Russian book: С. Н. Кожевников и другие, Механизмы, Москва, 1965.

Inventor files of this video:
https://www.mediafire.com/file/8fflcy...