ratchets of the ratchet track14. The other part8of this gear has also a sleeve within its gear track and this is mounted directly on the outer periphery of the sleeve20and is rotatable about it. A somewhat larger diameter sleeve projects downwardly at23into the recess formed between the ...
ratchets of the ratchet track14. The other part8of this gear has also a sleeve within its gear track and this is mounted directly on the outer periphery of the sleeve20and is rotatable about it. A somewhat larger diameter sleeve projects downwardly at23into the recess formed between the ...