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

[920]. Sliding shaft locking pin; used for lathe headstock back-gear shafts, &c.

[921]. Lever locking hook; the lever is hinged so that it can be slipped over the hook.

[922]. Bow catch for ladles, skips, &c.

[923]. Segment-slot and bolt fixing for swivelling base.

[924]. Pin lock for turntable or disc.

[925]. T catch.

[926]. Roller and incline slot for locking a rod or rope.

[927]. Revolving bush lock for catch rod; the catch rod can only slip through the bush when the latter is in one position (see [plan view]).

[928]. Wire fencing notches in L or ⊔ iron.

[929]. Trap door automatic catch.