Caplock mechanism

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(Redirected from Caplock)

The caplock mechanism was the successor of the flintlock mechanism in firearm technology, and used a percussion cap struck by the hammer to set off the main charge, rather than using a piece of flint to strike a steel frizzen.

Terminology

The following photographs show both sides of the caplock mechanism, along with descriptions of the annotated parts.

External side of the lock:

Missing image
Percterm-E.jpg
Image:percterm-E.jpg

A- Mainspring retainer stud B- Lockplate C- Hammer nose recess D- Hammer head E- Hammer spur F- Hammer G- Tumbler screw H- Sear spring screw tip

Internal side of the lock:

Image:percterm-I.jpg

A- Upper limb of mainspring B- Lower limb of mainspring C- Claw of mainspring D- Lower pivot stud of stirrup E- Stirrup F- Upper pivot stud of stirrup G- Tumbler axle/pivot H- Tumbler I- Pawl of sear (sear nose) J- Sear pivot screw K- Body of the sear L- Arm of the sear M- Sear spring N- Sear spring screw O- Bridle P- Bridle screws Q- Hammer R- Hammer spur S- Hammer head T- Stirrup arm of tumbler U- Bolster V- Lockplate

Internal side of the lock, with bridle removed:

Image:percterm-I2.jpg

A- Upper limb of mainspring B- Lower limb of mainspring C- Stirrup D- Claw of mainspring E- Lower pivot stud of stirrup F- Tumbler G- Tumbler axle/pivot H- Fly I- Half-cock notch of tumbler J- Pawl of sear (sear nose) K- Sear pivot screw L- Body of the sear M- Arm of sear N- Sear spring O- Sear spring screw P- Bridle screw holes Q- Hammer R- Stirrup arm of tumbler S- Upper pivot stud of stirrup T- Bolster U- Retainer stud of mainspring

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