Device for actuating an alarm in the case of breaking in

Claim 1

A device for actuating an alarm in the event of a breaking into premises, ground enclosed by a wall or like enclosure having an opening capable of being closed by a closing member, such as a door, window or the like, said device comprising locking means for locking the closing member in the closing position of the closing member, the locking means having a movable member and an associated keeper, said movable locking member being movable between a withdrawn position from said keeper and two locking positions within said keeper, a detecting mechanism responsive to the opening of said closing member, an alarm signal generator, means operatively connecting the detecting mechanism to the generator and comprising an arming mechanism having a switch capable of being actuated directly by the locking member of said locking means, when moved to one of said locking positions, for selectively allowing and precluding actuation of the alarm, said switch being of the type having a push button with an associated moving contact and two fixed contacts, said moving contact being urged into contact with said two fixed contacts, to complete a circuit through said switch, by a movement of said locking member, against said pushbutton and to the one of the locking positions of said locking member to its fully extended position, said moving contact being retained in this position when said locking member is withdrawn from contact wherein said pushbutton to the other one of the locking positions wherein said locking member is within said keeper, and said moving contact being disengaged from said two fixed contacts on a next movement of said locking member from said other one of the locking positions to said one of the locking positions, and wherein the detecting mechanism comprises a second electric switch disposed within said keeper and a thrust means which is carried by the closing member and is capable of opening the second switch when the closing member closes said opening.

Claim 2

A device for actuating an alarm in the event of a breaking into premises, ground enclosed by a wall or like enclosure having an opening capable of being closed by a closing member, such as a door, window or the like, said device comprising locking means for locking the closing member in the closing position of the closing member, the locking means having a movable member and an associated keeper, said movable locking member being movable between a withdrawn position from said keeper and two locking positions within said keeper, a detecting mechanism responsive to the opening of said closing member, an alarm signal generator, means operatively connecting the detecting mechanism to the generator and comprising an arming mechanism having a switch capable of being actuated directly by the locking member of said locking means, when moved to one of said locking positions, for selectively allowing and precluding actuation of the alarm, said switch being of the type having a push button with an associated moving contact and two fixed contacts, said moving contact being urged into contact with said two fixed contacts, to complete a circuit through said switch, by a movement of said locking member, against said pushbutton and to the one of the locking positions of said locking member to its fully extended position, said moving contact being retained in this position when said locking member is withdrawn from contact wherein said pushbutton to the other one of the locking positions wherein said locking member is within said keeper, and said moving contact being disengaged from said two fixed contacts on a next movement of said locking member from said other one of the locking positions to said one of the locking positions, and wherein the detecting mechanism comprises a second electric switch disposed within said keeper and a thrust means which is carried by the closing member and is capable of opening the second switch when the closing member closes said opening.