Door mechanisms for safes

Claim 2

A door lock for safes and the like comprising companion sets of bolts carried by the door and extending in outward directions from a medial zone, means in the latter allowing the bolts to remain in the retracted positions, such means operable by a partial turn when the door is closed to advance the bolts into locking engagement with the safe, and key-operated controls to lock each set of bolts in the advanced position, said keyoperated controls comprising companion key locks corresponding to said sets, each key lock operable by the turn of a key, said controls including levers free of the bolts before the related keys are turned, and said controls also including means effective after the bolts have been advanced and when the keys have been turned to move the levers into positions checking the return of the bolts.

Claim 3

The structure of claim 1, and yieldable means maintaining the bolts in the retracted positions before and after said partial turn.

Claim 4

The structure of claim 1, and backing springs maintaining the bolts in the retracted positions before and after said partial turn.

Claim 5

The structure of claim 1, said bolts having widened inner end portions, and said means comprising a rotary knob on the outer side of the door, and a cam carried by the knob and having a circular series of points urging said end portions in outward directions during said partial turn.

Claim 6

The structure of claim 1, said bolts having widened inner end portions, and said means comprising a rotary knob on the outer side of the door, and a square cam carried by the knob with corners urging said end portions in outward directions during said partial turn.

Claim 7

The structure of claim 1, said bolts having inner end portions, each portion formed with a notch and said levers including end hooks, said end hooks being seated in said notches to check the return of the bolts after the bolts have been advanced and the keys have been given said turn to move the levers into the checking positions.

Claim 8

The structure of claim 1, said levers being rotary levers and said contros also including cams carried by said key locks effective after the bolts have been dvanced and the keys have been given said turn to rotate the levers into the checking positions.

Claim 9

The structure of claim 7 further including yieldable means maintaining said levers in the rotated positions.

Claim 10

The structure of claim 7 wherein said cams are oval and are disposed to provide low profiles before said turn and high profiles after the bolts have been advanced and the keys have been given said turn, said high profiles being effective to turn the levers into the checking positions.

Claim 11

The structure of claim 9 wherein said rotary levers arE disposed in pairs and further including springs connecting each pair of levers into contact with the profiles of the oval cams.

Claim 12

A safe having a door with a medial knob, key locks in the door spaced sidewise from the knob, two sets of bolts carried by the door on its inner side corresponding to the key locks and in advanced positions locking the door to the safe, controls on the inner side of the door maintaining the bolts in the advanced positions, said controls operative on the rotation of the key locks by means of keys to release the bolts for retraction, and means automatically retracting the bolts in such event to unlock the door from the safe.

Claim 13

A safe having a door with a medial knob, key locks in the door spaced sidewise from the knob, two sets of bolts carried by the door on its inner side corresponding to the key locks and in advanced positions locking the door to the safe, controls on the inner side of the door maintaining the bolts in the advanced positions, said controls operative on the rotation of the key locks by means of keys to release the bolts for retraction, and means automatically retracting the bolts in such event to unlock the door from the safe.

Claim 14

The structure of claim 11, a square cam carried by the knob on the inner side of the door, said controls also maintaining the inner ends of the bolts clear of any rotary position of the square cam while 4he bolts are advanced, the bolts bearing with their inner ends when retracted on the flats of the square cam.

Claim 15

A safe having a door with a medial knob extended up and down with handles, key locks in the door spaced sidewise from the knob, two sets of bolts carried by the door on its inner side corresponding to the key locks and in retracted positions, a square cam carried by the knob on the inner side of the door and seating the inner ends of the bolts on the flats of the square cam, oval cams with high profiles carried by the key locks on the inner side of the door corresponding to the locking positions of the keys, companion levers bearing on said high profiles and engaging the bolts from the side, the turning of the keys to unlocking positions placing said profiles low, a turn of the handles causing the square cam to advance the bolts, and means maintaining said levers on the low profiles and in engagement with the ends of the bolts to check their return and maintain the door locked to the safe.

Claim 16

A safe having a door with a medial knob extended up and down with handles, key locks in the door spaced sidewise from the knob, two sets of bolts carried by the door on its inner side corresponding to the key locks and in retracted positions, a square cam carried by the knob on the inner side of the door and seating the inner ends of the bolts on the flats of the square cam, oval cams with high profiles carried by the key locks on the inner side of the door corresponding to the locking positions of the keys, companion levers bearing on said high profiles and engaging the bolts from the side, the turning of the keys to unlocking positions placing said profiles low, a turn of the handles causing the square cam to advance the bolts, and means maintaining said levers on the low profiles and in engagement with the ends of the bolts to check their return and maintain the door locked to the safe.

Claim 17

The structure of claim 1, said controls also being key-operated to allow each set of bolts to be retracted, and a manual device effective to operate the controls in the second-mentioned manner when key means are ineffective.