Electric lock

An electric lock, comprising:

• a. an elongate housing adapted for mounting in a narrow door stile or frame member with the longitudinal axis of the housing being aligned with the longitudinal axis of the member;
• b. a bolt supported in said housing for movement on an axis in right-angled relation to the longitudinal axis of said housing between a projected locking position and a retracted non-locking position;
• c. means normally urging said bolt towards its retracted position;
• d. means for actuating said bolt to a projected locking position, which includes a solenoid having a plunger supported for axial movement on an axis having parallel relation with respect to the longitudinal axis of said housing;
• e. deadlocking means automatically operable to releasably lock said bolt in said locking position, said deadlocking means comprising:
• a member supported in said housing for movement between deadlocking and non-deadlocking positions;
• a first spring normally urging said member to its non-deadlocking position;
• and
• electrically energizable means for releasing said deadlocking member, including a second solenoid mounted to said housing and having a plunger normally urged by a second spring in a direction to move said member against the force of said first spring into said deadlocking position, said second spring having a greater urging force than said first spring, whereby upon energization of said solenoid said first spring will be operative to move said member to said non-deadlocking position.