Abstract

A firearm lock mechanism includes a trigger, a hammer, a stirrup connected to the hammer at a stirrup connection point, and a spring operably connected to the stirrup at a spring connection point. Progressive pivoting of the trigger drives corresponding progressive pivoting of the hammer. The stirrup connection point is disposed forward of the hammer pivot point. One of the spring connection point, hammer pivot point, and stirrup connection point is offset relative to and laterally spaced between the others of the points to be a vertex of an intermediate angle cooperatively defined by the points. The angle increases in magnitude as the trigger drives pivoting of the hammer. A toggle line is defined between the trigger pivot point and the hammer pivot point. The trigger contacts the hammer at a contact point that shifts across the toggle line as the trigger drives pivoting of the hammer.

IPC Classes  ?

• F41A 17/76 - Hammer safeties, i.e. for preventing the hammer from hitting the cartridge or the firing pin automatically operated, i.e. operated by breech opening or closing movement
• F41C 3/14 - Revolvers

Abstract

A firearm lock mechanism includes a trigger, a hammer, a stirrup connected to the hammer at a stirrup connection point, and a spring operably connected to the stirrup at a spring connection point. Progressive pivoting of the trigger drives corresponding progressive pivoting of the hammer. The stirrup connection point is disposed forward of the hammer pivot point. One of the spring connection point, hammer pivot point, and stirrup connection point is offset relative to and laterally spaced between the others of the points to be a vertex of an intermediate angle cooperatively defined by the points. The angle increases in magnitude as the trigger drives pivoting of the hammer. A toggle line is defined between the trigger pivot point and the hammer pivot point. The trigger contacts the hammer at a contact point that shifts across the toggle line as the trigger drives pivoting of the hammer.

IPC Classes  ?

• F41A 17/76 - Hammer safeties, i.e. for preventing the hammer from hitting the cartridge or the firing pin automatically operated, i.e. operated by breech opening or closing movement
• F41C 3/14 - Revolvers

Abstract

A firearm lock mechanism includes a trigger, a hammer, a stirrup connected to the hammer at a stirrup connection point, and a spring operably connected to the stirrup at a spring connection point. Progressive pivoting of the trigger drives corresponding progressive pivoting of the hammer. The stirrup connection point is disposed forward of the hammer pivot point. One of the spring connection point, hammer pivot point, and stirrup connection point is offset relative to and laterally spaced between the others of the points to be a vertex of an intermediate angle cooperatively defined by the points. The angle increases in magnitude as the trigger drives pivoting of the hammer. A toggle line is defined between the trigger pivot point and the hammer pivot point. The trigger contacts the hammer at a contact point that shifts across the toggle line as the trigger drives pivoting of the hammer.

IPC Classes  ?

• F41A 19/00 - Firing or trigger mechanismsCocking mechanisms
• F41A 19/52 - Cocking mechanisms for other types of guns, e.g. fixed breech-block types, revolvers
• F41A 19/53 - Double-action mechanisms, i.e. the cocking being effected during the first part of the trigger pull movement
• F41A 19/10 - TriggersTrigger mountings
• F41C 3/00 - Pistols
• F41C 3/14 - Revolvers
• F41A 17/74 - Hammer safeties, i.e. for preventing the hammer from hitting the cartridge or the firing pin

Abstract

A firearm lock mechanism includes a trigger, a hammer, a stirrup connected to the hammer at a stirrup connection point, and a spring operably connected to the stirrup at a spring connection point. Progressive pivoting of the trigger drives corresponding progressive pivoting of the hammer. The stirrup connection point is disposed forward of the hammer pivot point. One of the spring connection point, hammer pivot point, and stirrup connection point is offset relative to and laterally spaced between the others of the points to be a vertex of an intermediate angle cooperatively defined by the points. The angle increases in magnitude as the trigger drives pivoting of the hammer. A toggle line is defined between the trigger pivot point and the hammer pivot point. The trigger contacts the hammer at a contact point that shifts across the toggle line as the trigger drives pivoting of the hammer.

IPC Classes  ?

• F41A 17/76 - Hammer safeties, i.e. for preventing the hammer from hitting the cartridge or the firing pin automatically operated, i.e. operated by breech opening or closing movement
• F41C 3/14 - Revolvers

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component parts for guns