Patent GB-190314275-A (GB)
Title: Improvements in Locks and Fastenings.
Inventor: CAMPBELL JOHN SMALLEY
Filed: 1903-06-27
Granted: 1904-06-02
Abstract: 14,275. Campbell, J. S. June 27. Locks, key; padlocks; fastenings; key holders.- Relates to a modified form of the locking- device described in Specification No. 28,475, A.D. 1902, for drawers, doors, and other articles. The device is readily convertible into a spring push - fastening, and is applicable also to padlocks. Fig. 4 shows the fastening in the unlocked position as applied to a drawer. Three concentric tubes a, b, c, together with the baffles, form the cartridge mechanism. The retaining-catch o is made separate from the spring m; the spring normally retains the catch in the raised position, and withdraws it to the position shown when the entire mechanism is pressed by the finger, or when the inner tube is pressed inwards by means of the key. The slot t in the tail end of the catch may be replaced by a stud or screw provided with a head beneath which the spring acts. The inner tube c is provided with a flange 1 having a tooth 2, Fig. 3, which engages an incline 3 or a recess 5 both forming part of a block on the lock-plate f. The outer tube a carries two detachable slotted discs or baffles, which have dummy keyholes and are held in place by the flange j and the intermediate tube b. A transverse slot k in the pushtube c constitutes the master keyhole, and receives the key after it has traversed the slots in the baffles ; the key is then rotated clockwise, and the tooth 2 travels up the incline 3 and abuts against a shoulder 6 on the block 3 ; the tube c is thus moved inwards, and the spring m forced into the position shown in Fig. 3. To place the catch o in the operative position, the key is turned until the tooth 2 enters the recess 5 ; the cartridge cannot then be depressed. When the tooth is in any position between the incline of the recess, the lock is converted into a spring push-fastening. To prevent the latch from being released by the insertion of a bent wire or other tool, the spring m is provided with an ear 7, between which and the spring the disc 1 engages, thus preventing the spring from being moved backwards without the tube c, the tube being prevented from moving by the tooth 2 engaging the recess 5. The latch described in the prior Specification for holding the cartridge in place may be dispensed with, or it may be retained, as shown at l in Figs. 6 and 7, being mounted upon the cartridge instead of upon the lock-plate. The plate a<1> carrying the master keyhole a<2> is formed in one with, or is fixed to, the tube b. The latch has a projection 8 adapted to engage a lug on the lock-plate &c. The cartridge is prevented from rotating by a pin engaging a slot in the socket e'. The arrangement is applied to padlocks, as shown in Figs. 9 and 10. The cartridge is introduced from the front, the retaining-catch o is carried on the spring m, and the inner tube is replaced by a pin c pivoted to the inner end of the spring and free to turn about its axis. The inner end of the pin is fitted with a peripheral tooth 2 adapted to ride up the incline 4, Fig. 12, or to pass beneath the end 5 of the block 3, according as the look is to be fastened or released. To fix the cartridge a, it has a rib 13, Fig. 13, with a gap 14 into which engages a sliding latch carried on the rear side of the front plate. The bow of the lock is arranged to secure the sliding latch in position. The key is shaped as shown in Fig. 14, or other forms may be used. A device for holding the keys for the various cartridges is shown in Figs. 15 and 16, and is adapted for attachment to a watch chain. The sheath 18 is fitted with a sliding frame 19 having a pin 20 upon which the keys g are pivoted. A stud 21 engaging a groove in the frame prevents the frame from leaving the sheath. The key to be used is turned outwards, as shown in Fig. 15, the frame then being returned to the sheath.