Abstract The casing of a lock holding a cylinder with the usual keyoperated tumblers associated with the casing, and the usual keyreceiving passageway in the cylinder for key operation of said tumblers, is provided with a safety combination against ''''picking'''' the lock, comprising a barlike element slidingly mounted in a passageway of the casing at the side of the cylinder, a bar-head and turn button carried by the barlike element and adapted to receive the finger end of a key, means limiting outward movement of the barlike element with the elements carried at its outer end, a safety lock tumbler movable in a passage in the casing and movable into a rounded seat in the cylinder wall, and into a like-rounded seat in the barlike element, in reverse movement, whereby in both outward and inward positions of the barlike element the cylinder is locked by said safety lock tumbler, and the cylinder face is blocked by the barhead in the unlocking operation of the turn button, said safety lock tumbler locking the barlike member against outward movement from its ''''In'''' position until upon unlocking operation the key is returned to insert position with the cylinder.
A safety lock construction comprising a casing and a keyoperated cylinder together with associated key-operated tumbler elements, the cylinder having a key insert face, in combination with a safety assembly against ''''picking'''' of the lock and comprising a barlike member slidingly mounted in a passageway of the casing offset from the cylinder, a head construction carried by the barlike member and adapted to engage and rotate a key entering said key insert face of the cylinder, said barlike member being movable to an inward position in the casing at which ti blocks said key insert face, a safety lock tumbler movable in a passage in the casing and also movable into a cylinder seat and a seat in the barlike member by rotation of the cylinder, said safety lock tumbler locking the cylinder in outward positions of said barlike member and until the head of the latter is positioned in blocking of the key insert face of the cylinder.
Claim 2
Dependent Claim
159 words
A safety lock construction comprising a casing and a keyoperated cylinder together with associated key-operated tumbler elements, the cylinder having a key insert face, in combination with a safety assembly against ''''picking'''' of the lock and comprising a barlike member slidingly mounted in a passageway of the casing offset from the cylinder, a head construction carried by the barlike member and adapted to engage and rotate a key entering said key insert face of the cylinder, said barlike member being movable to an inward position in the casing at which ti blocks said key insert face, a safety lock tumbler movable in a passage in the casing and also movable into a cylinder seat and a seat in the barlike member by rotation of the cylinder, said safety lock tumbler locking the cylinder in outward positions of said barlike member and until the head of the latter is positioned in blocking of the key insert face of the cylinder.
Claim 3
Dependent Claim
32 words
A safety lock construction in accordance with claim 1, in which the head of the barlike member includes an outermost turn button adapted to engage the finger piece end of a key.
Claim 4
Dependent Claim
59 words
A safety lock construction in accordance with claim 1, in which the safety tumbler seats in the cylinder and barlike member are aligned when the barlike member is in its inward position, with the safety tumbler in the cylinder seat, rotation of the cylinder from key insert position moving the safety tumbler into the seat of the barlike member.
Claim 5
Dependent Claim
30 words
A safety lock construction in accordance with claim 1, in which the safety lock tumbler is a gravity movable member guided by the wall of the passage in the casing.