Patent GB-423125-A (GB)
Title: Improvements in and relating to locks
IPC: E05B65/26
Filed: 1933-12-09
Abstract: 423,125. Latches. PAPST, M., 26, Rue du Faubourg, St. Jacques, Paris. Dec. 9, 1933, Nos. 34710, 34712, 34713, and 34714. Convention dates, Dec. 16, 1932, June 6, 1933, June 13, 1933, and Aug. 15, 1933. [Class 44] The handle of a latch particularly for a motor car door is slidable perpendicularly to the plane of the door so that it can be held against operation by being moved against a spring into a correspondingly shaped recess in the door or in a plate mounted on or recessed into the door or by being moved against the face of the door in which case the handle may be of segmental section and may have a recess or hole to engage over a projection on the face of the door. The handle is permanently coupled to the latch follower and is held positively in its normal operative position and in its pressed-in or inoperative position by means which operate automatically when the handle is moved to either position after being released from the other position by means of a key from the outside of the door or a knob from the inside of the door. In one construction, Fig. 4, the handle 3 is held in its two positions by a spring-pressed radially-sliding bolt 9 engaging in grooves 11 and 14 in the follower 2. As shown, the handle is held in its operative position, but if the bolt 9 is turned through 180‹ by a pintumbler lock 7, it is aligned with an incline 13 and the handle is then free to be pushed inwards and retained by the bolt 9 snapping into the groove 14; similarly, an incline 15 allows outward movement of the handle under the action of a spring 4. In another construction, Figs. 8 and 10, the handle is held in its two positions by a pivoted member 23 urged by a spring,(not shown), to a central position, (Fig. 10), in which it engages with either of two recesses 25 and 26 in the handle shank. The pivoted member 23 is disengaged from either recess 25 or 26, whereby the handle is free to be moved from one position to the other, by radial arms 27 and 28 respectively formed on the barrel 5 of a pin-tumbler lock and slightly spaced apart angularly. The member 23 may be pivoted on a plate 29 which turns with the handle or on the follower 2. Fig. 19 shows a similar construction in which the lock barrel 5 is replaced by a rod 46 having a radial arm 27 and operated by a knob 47 from the inside of the door. The recesses 25 and 26 are connected by a longitudinal slot and a helical spring 48 tends to align the arm 27 with this slot and to move it towards the right. The knob 47 is used for pulling the handle 3 inwards when the arm 27 has been turned into the recess 26 to disengage the pivoted member 23. In another construction, Figs. 15 and 16, the handle shank is provided with notches 32 and 35 adapted to be engaged by a sliding plate 30 which is pressed upwards or downwards by a spring 31 according as the latter is in the full or chain-dotted line position of Fig. 16 as determined by the position of the barrel 5 of a pin-tumbler lock to which it is attached at one end. In a slightly modified form, the sliding plate 30 is replaced by a pivoted U-shaped plate, the legs of the U engaging the notches in the handle shank. In another construction, Figs. 24 and 27, the handle 3 is held in its two positions by a spring- pressed slide 51, which is mounted on a plate 59 rotatable with the handle, engaging with notches 49 and 50 in the handle shank. The slide is disengaged by a nose 55 on a rod 54 slidable in a longitudinal groove in one side or a hole through the centre of the handle shank and operable by a knob 56 on the inside of the door, while a projection 65 on the rod engages with an abutment 52 on the handle shank to move the handle inwards. The portion of edge of the slide engaging with the notches 49 and 50 is squared, while that co-operating with the nose 55 is rounded. In another construction, Fig. 31, a sliding bolt 84 is pressed upwards to engage a hole 89 in an inwardly extending sleeve 87 or downwards to engage over the outer end of the sleeve by a spring 85 mounted on the barrel of a lock 212 so that its direction of thrust depends on the orientation of the lock barrel. The sleeve is integral with a plate 210 recessed to receive the handle when pushed in. The inner end of the handle shank has a square hole in which slides a square spindle connected to the follower. In a modification, Fig. 33, a sliding bolt 214 is adapted to be moved downwards against a spring 215 by an eccentric pin 218 on the lock barrel, and to engage outside a latch 220 mounted in the plate 210 to hold the handle in its outer position. In another construction, Figs. 35 and 37, a spring 221 encircles the sleeve 87 and has an eye I projecting through an opening therein so as to engage recesses 222 and 223 in the handle shank and adapted to be disengaged by radial arms 225 and 226 on a hollow extension 224 of a lock barrel. In a modification, the eye I is disengaged by a tubular sleeve rotatable on the handle shank, being operable by a barrel lock. In another construction, Fig. 48, a semicircular head 320 on a spring strip 329 fixed to a tubular member 316 engages with slots 324 and 325 in a fixed sleeve 305. The member 316 is provided with a lug 323 with which a lug 322 on a barrel lock 317 co-operates with so much play that rotation of the barrel through 180‹ turns the member 316 through only 45‹, whereby the head 320 may be withdrawn from either slot 324 or 325 by co-operation with its inclined edge. The latch spindle 307 has a sleeve 309, which carries the follower and has an end disc 311 to bear in the end of the sleeve 305, being retained by a plate 312 engaging slots 313. The Specification as open to inspection under Sect. 91 comprises also several other constructions. In one of these, Fig. 39 (Cancelled), the handle 73 is locked in its pushed-in position by a bolt 126 slidable in a slot in the end of the follower spindle 124 and adapted to be moved into engagement with a slot 127 in the handle shank 74 by an eccentric pin 113 on a barrel lock 112. The handle is held positively in its outward position only when it is turned from its normal position so that a pin 100 enters the lateral part 117 of an L-shaped slot in the fixed sleeve 77. In a modification, the bolt 126 is mounted in the handle shank and engages with a slot in the fixed sleeve, the follower spindle being fixed to the handle shank and slidable through the follower. In another construction, Fig. 42 (Cancelled), the handle is locked in its pushed-in position by a doublewedge shaped head 120 on the spindle 124 engaging with spring jaws 123 mounted in a hollow member 122 adapted to be turned by an eccentric pin on the barrel lock 112. In two further constructions, the handle pivots instead of slides into a recess in the door. Fig. 47 (Cancelled) shows a handle 129 pivoted at 130 to its shank 260 and having a projection 133 which moves in an L-slot 134, 135, and normally urged to the position shown by a spring, the handle being adapted to be locked in its pushed-in position by a lock 136 mounted in the plate 125 or in the end of the handle. Fig. 19 (Cancelled) shows a handle 37 provided with a cam surface 42 with which a projection 41 on a rod 40 turned by a lever 39, co-operates as shown to hold the handle in its pushed-in position. It is further stated that the follower spindle may be made hollow at its inner end to receive an emergency tool, or a powerful spring may be arranged between the handle and the door so as to make a space between the handle and the door in case of emergency. This subject - matter does not appear in the Specification as accepted. [For Figures 19, 39, 42, 47, (all Cancelled), see next page.] 423,125.