Abstract: Disclosed is a lock set for installation in a bored hole in a door having an inside thumb turn locking mechanism. A unique combination camming device, operated by both the thumb turn and independently by the internal spindle through the internal handle, permits inside privacy with a panic proof feature while simultaneously allowing emergency entrance through secondary outside function with an independent means such as a coin or screwdriver.

Abstract: Disclosed is a clutch mechanism suitable for use in an electronic lock. The clutch mechanism requires minimal electronic current draw for operation by utilizing, in part, mechanical power applied to operate the lock to engage the clutch mechanism. A unique camming device in combination with a solenoid released interference shutter accomplishes the object of the invention.

Abstract: A cartridge for a lockset for a door having a primary rotatable spindle and a secondary rotatable spindle parallel thereto has a pair of identical cartridge plates disposed in abutment with each other and defining a space therebetween. There are openings in the plates adapted to receive portions of the spindles secured in position relative to the plates by fastenings engaging the spindle supports and going through the plates. Within the space is a slide confined to straight line motion by edge flanges on the plates. At one end the slide has symmetrical lugs adapted to engage projecting arms of a rocker lever surrounding and rotating with the primary spindle. At the other end the slide has a projecting lug adapted to engage an arm of a rotary lever connected to the secondary spindle. The cartridge is symmetrical about a longitudinal center line and so can be applied to the spindles either side first for right-hand and left hand doors.