[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.