GB471141A - New and improved handle and latch mechanism - Google Patents

Abstract

471,141. Door-latches. OTTINGER, L. Dec. 10, 1936, No. 33940. Convention date, Dec. 19, 1935. [Class 44] A door latch, particularly for motor cars, has a rotary actuating shaft 10 with an operating handle 8 normally lying close to and substantally parallel with the face of the door, and the shaft is disposed obliquely to the door so that the handle moves away from the door face as it is turned to retract the latch bolt 5. The door surface may be recessed as shown in Fig. 2, to permit an easy grip of the handle to be obtained ; the escutcheon plate 14 is flared under the door surface and is packed up with resilient material. The movement of the bolt 5 is limited by a flexed post 16 engaging the ends of the slot 17. The roll-back of the latch is supported in journals in bearing plates 18, 19, the latter 19 being mounted on the face plate 3 and a foot member 20, while the former 18 is supported by the plate 19. The end of the handle shaft 10 is flattened and fits in a slot in the roll-back ; the nose 24 of the roll-back engages a lug 25 near the lower end of a pivoted lever 26 to which is pivoted the dog 29 for operating the bolt 6. When the handle is turned clockwise the nose 24 of the roll-back forces the dog 29 to engage the shoulder 30, after the lost motion between the dog and shoulder has been taken up, and so retracts the bolt. The outer end of the handle shank 11 is provided with a cylinder look operated by a key. A pair of balls 35, 36 positioned within the handle shaft 10, coact with the forked end of the lever 31, and when the key is rotated in one direction the lever is operated by the ball 35 to move the dog 29 to the position shown in Fig. 4, where it can retract the bolt. When the key is rotated in the other direction the ball 36 operates the lever to withdraw the dog 29, so that the handle can be moved without retracting the bolt. In a modification the base plate is formed to provide a portion 40, Fig. 6, at right-angles to the axis of the handle shaft, and the roll back 47 has an actuating nose 48 displaced angularly from the body of the roll-back as shown in Fig. 11. In 'a further modification the latch mechanism is mounted in the usual way, and its rotary member is connected to the handle shaft by a universal joint 52, Fig. 13. In another modification the upper part of the door is thinner than the lower part and the external handle 60 is mounted on the sloping portion 9c, Fig. 20. An inside handle 63 is mounted on an extension 64 of the handle shaft, and is held yieldingly in an upright position by a spring-pressed plunger 68. As the handle is turned its end moves over a wearing plate 70 mounted to protect the upholstery.