The engineer's sketch-book of mechanical movements, devices, appliances, contrivances and details employed in the design and construction of machinery for every purpose

by Thomas Walter Barber

[2273]. Similar fastening, using a wooden bar.

[2274]. Locking stud, used for iron bedstead laths.

[2275]. Catch and hook.

[2276]. Hinged catch to lock a screwed gland or nut.

[2277]. Letter lock, or combination lock. Any number of discs may be arranged on a spindle having a feather key, so that they must be all in a certain position to allow the key to slide through a notch or key way cut in each disc, so as to open the loop.

[2278]. Locked nut.

[2279]. Spring pawl, umbrella catch.

[2280]. Spring snap, released by pressing the open ends together.

[2281]. Locking pawl for spur teeth.

[2282]. Spring handle.