[2290]. Locking gear for a shaft driven by spur gearing, used in place of a clutch.
[2291]. Similar lock for a revolving head, standard tool post, &c.
[2292]. Tee groove for a T head bolt for [Nos. 2290] and [2291].
[2293]. Horse-shoe distance piece to place between a sliding pinion and the shaft collar to keep it either in or out of gear.
[2294]. Wedge plate and screw fastening for cutters, &c.
[2295]. Locking device for a spring lever, handle, button hook, &c.
[2296]. Locked centre pin.
[2297]. Cotter to lock a sliding spindle.