=898. Common sliding bolt.=
[Illustration: 880.-898.]
=899. Common latch.=
=900. Cam locking bolt;= locks the bolt when either in or out, so that
it can only be moved by the cam spindle.
=901. Crank movement locking bolt,= similar to the last.
=902. Bolt of common lock.=
=903. Disc and pin.=
=904. Side pawl.=
=905. Locking pawl.=
For Pawl and Ratchet Gear see Section 62.
=906. Spring catch,= with round end which slips past the socket if
sufficient force is applied, used for swing doors, &c.
=907. Another form,= bevilled on one side.
=908. Hook latch.=
=909 & 910. Hasp and staple.=
=911. Crossbar and hooks.=
=912. Hand set screw.=
=913. Drop catch= for turntable, &c.
[Illustration: 899.-913.]
=914. Turning or twisting bolt.=
=915. Rope or rod stopper,= with cam lever grip. See No. 47.
=916. Chain stop.=
=917 & 918. Spindle grips,= to lock a sliding or revolving spindle in a
bearing or bush.
=919. Clamp and screw.=
=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.=
=930. Screw and bridle suspension,= for blast pipes, &c.
=931. Drop loop fastening= for a door.
=932. Spring stud lock.=
[Illustration: 914.-932.]
=933. Disc and radial slot;= the rod can be slipped out sideways when
the disc is turned so as to bring the slots together.
=934. Radial hinged lever and crown ratchet.=
=935. Locking bar= to fix a lever in any position.
=936. Pawl for locking sliding shaft,= used for winches, &c., having
double and single purchase gear or shifting clutches.
=937. Fastening eye bolt= for a hinged cover; the bolt is also hinged,
and can be turned down out of the way. See also No. 1930.
=938. Crank arm device,= to lock a valve or lever in two positions. See
also No. 16.
=939. Gun, breech-loading,= sliding cylindrical block locked by turning
the arm into a notch.
=940. Door fastening staple and cotter.=
=941. Common cotter.=
=942. Half nut locking and unlocking device,= used for lathe leading
screws; the half nuts are moved simultaneously in opposite directions by
cams on the lever spindle.
=943. Swinging catch= to secure end of a drop bar.
=944. Tool post,= to swivel and lock in any position. See also No. 493.
=945. Locking screw,= to lock the hand wheel and spur pinion to the
shaft when required to be driven by it.
See also Lock Nuts. The common varieties of lever locks with stepped
key-wards.
See No. 1723.