Patent GB-216938-A (GB)
Title: An improved lock
IPC: E05B37/12
Filed: 1923-03-06
Abstract: 216,938. Clementz, C. O. March 6, 1923. Locks, permutation; staple and slotted-plate fastenings.-Leather bags, portfolios and the like are provided with a lock which can be used at will, by adjustment as a snap lock or permutation lock, irrespective of the position of the permutation elements. In the form shown in Figs. 1 and 3, the notch 11 of the stud 12 engages the spring arm 3 and the shorter notch the spring arm 2 when the nut 13 is screwed fully down. For release, notched permutation discs (not shown) are set to allow a projection 5 on the member 1 to move into the notches when the member 1 is pressed inwards to cause a pin 53 to move the spring 2 out of the notch 10. A member 17 by means of a pin 54 moves the spring 3. The permutation discs are duplex to allow changing the combination. By unscrewing the nut 13 through one or two turns, the stud is prevented from entering far enough to allow the spring 2 to enter the notch 10, but allows the spring 3 to enter the longer notch 11, enabling the device to act as an ordinary snap lock. In the form shown in Fig. 5, spring members 2 and 3 engage a stud with equal notches, the member 2 only being capable of releasing the stud when permutation discs (not shown) allow a notch 5 on the operating member 1 to move into notches. To adjust the device to act as an ordinary snap lock, the member 2 is moved beyond its stud-engaging position by a handle fitting in the hole 15 and is retained there by the pawl 16, a needle 18 indicating which condition the lock is in. The pawl is removed when desired by a handle (not shown). In the form shown in Fig. 6, the bolt 2 has lugs 19 extending into apertures for engaging a hasp or like member. The bolt 2 normally abuts on a spring-pressed member 21 pivoted to the permutation bolt 1 and held against movement by the elements S. The member 21 is held in this position by a bolt 20 sliding in a recess in the main bolt. When the elements S are set to allow the projections 5 to enter the notches 4, the bolts 1, 2, 20 can be moved against the spring 57 by a handle to release the projections 19 from the hasp. To convert the device into an ordinary snap lock, the bolt 20 is slid out of engagement with the member 21 by its handle 15, allowing the member 21 to rock so as to bring its notch opposite the projection 22 on the bolt 2, allowing the bolt 2 to be moved without setting the elements S. In the form shown in Fig. 7 spring bolts 2 and 3 moving in opposite directions have openings O for engaging double-notched studs. The bolt 3 is always in action and acts as an ordinary snap device. The bolt 2 may be held out of engagement with the studs by a spring pawl 31, pivoted in the casing, engaging a stud 27 on the bolt. When the pawl is released, the permutation elements Si require setting before the bolt 2 can move, a pin 28 on it engaging a lug L on the bolt 1. The elements comprise notched plates Si with a circular series of holes for variably engaging a peg on a boss 8, for changing the combination, and a dial Sy, the parts being secured together by a bolt 7. In the form shown in Fig. 15, a bolt 2 with notches for receiving notched headed studs, has two arms 60 engaging pins 38 on a disc 37 turned by a handle. With the bolt 40 in its inoperative position, as shown, the disc can be turned in a clockwise direction for releasing the studs irrespective of the permutation device, the lock then acting as an ordinary snap device. When the bolt 40 is shot by its handle against a spring 61, the disc can only be turned anti-clockwise so that the permutation elements (not shown) in the openings in the bolt 1 must be set to allow the pin 38 to move the bolt of the permutation device. A pawl 41 holds the bolt 40 in its operative position and is lifted for release to re-set the device as a snap lock, when the bolt 2 is operated, by a pin 42 on the bolt 2 engaging its tail 41. In the form shown in Fig. 18, the spring 2 engages a notched stud and is disengaged by turning a member 44 which moves the bolt 1. The bolt 1 can move freely in one direction, allowing the device to be used as a snap lock, The bolt 1 can be held against movement in both directions by the engagement of a hook 64 on a pivoted member 45 with a projection 65 on the bolt, effected by moving the bolt 46 to the left by a knob. In this position, the permutation elements S have to be set before the spring 2 can release the stud. Operation under these conditions releases the hook from the bolt 1 and moves the bolt 46 against its spring, allowing the same spring 62 to re-set the device as shown in Fig. 18 for use as a snap device.