Telephone locking apparatus

An apparatus for locking a telephone, said telephone having a switch hook and a handhold shelf, comprising, in combination:

• means for rigidly attaching said apparatus to said telephone, said attaching means including a base plate, a keeper plate, and means for adjustably securing said base plate to said keeper plate, said keeper plate having a pair of side walls, said side wall having a first end portion, an intermediate portion and a second end portion, said side wall having a height greatest at said first end portion and inclining downwardly from said first end portion to said intermediate portion, said first end portion engaging said base plate in an assembled state, said base plate, keeper plate and securing means cooperatively defining jaw means for adjustably clamping said handhold shelf, said keeper plate pivoting substantially about said engagement of said first end portion and said base plate as said securing means is adjusted;
• a locking plate hingedly connected to said attaching means and operable in at least a first state, said locking plate engaging and depressing said switch hook in said first state;
• and
• means for selectively interlocking said locking plate and said attaching means whenever said locking plate is in said first state, said interlocking means being fixedly secured to said locking plate, said attaching means substantially enclosing said interlocking means in said first state, whereby tampering with said interlocking means in said first state is substantially avoided.