Patent GB-436690-A (GB)
Title: Improvements in door locks
IPC: E05B5/02
Filed: 1934-09-04
Abstract: 436,690. Car-door handles. PAPST, M., 16, Square du Port Royal, Paris. Sept. 4, 1934, Nos. 25480, 25481, and 25482. Convention dates, Sept. 15, 1933, Oct. 25, 1933, and Dec. 28, 1933. [Class 44] A door handle, particularly for a motor car, is slidable, swingable or screwable from an operative position clear of the door to an inoperative position against the door and is releasable from its two end positions by devices operated without a key. These devices may be actuated from the inside or the outside, and to prevent release of the handle when the car is left empty, key operated means are provided operable only from the outside of the car. A door handle 135 is mounted on a shank 137 capable of sliding and turning in a casing 121 fixed to a door plate 120 which is recessed to receive the handle when it is pressed into its inoperative position. Secured to the shank 137 is a sleeve 136 having a cylindrical bore 138 and a square socket 139. A square spindle 157 slides in the socket 139 and in a sleeve 133 which actuates a lock follower 134. The spindle also passes through a strip 131 secured to an end piece 129, the strip 131 working in slots in the casing 121 to prevent axial movement of the sleeve 133. A spring 132 normally urges the shank 137 into its outer position. A push button 150, formed as a cylinder lock, slides in the sleeve 136, the lock tumblers 152 sliding in a groove 140 formed in the sleeve 136. An extension 151 secured to the button 150 has a pin 153 which engages a helical slot 145 in a locking-member 144 capable of turning without sliding in the sleeve 136. A wedge-shaped projection 148 mounted on a spring 149 on the locking member enters a slot 123 in the casing 121, this slot being long enough circumferentially to enable the handle to be turned to open the door but preventing axial movement. A pin 143 also works in a cross slot connected to a longitudinal slot 127 in the casing 121. When the button 150 is pressed inwards, the pin 153 acting on the helical slot 145 causes the member 144 to turn, and the wedge-shaped projection engages. the edge of the slot 123 and slides beneath the inner surface of the casing 121. Continued pressure on the button forces the handle shank into the casing until the projection 148 snaps into a slot 124 which is laterally displaced with respect to the slot 123. The pin 143 working in the slot 127 prevents relative rotation, during this movement of the shank and sleeve. The parts now occupy the position shown in Fig. 6. To release the handle, it is pressed inwards an amount provided by the clearances 164, the button 150 being prevented from partaking of this movement by a member 155 working in a groove in the spindle 157 and in this position acting as a strut between the button and the inner end of the casing. Consequently the pin 153 working in the helical slot 145 causes a reverse rotation of the sleeve 144 and the projection 148 is caused to engage the lateral edge of the slot 124 until it becomes depressed beneath the casing 121. The spring 132 restores the parts to their original, handleextended, position when pressure on the handle is released. To enable the handle to be retracted or extended from inside the door the member 155 has a hooked end 156 engaging a shoulder 160 of the spindle 157 and has a head 154 engaging the button 150. By pulling on a handle 161 on the spindle 157 the button is moved inwards to release the handle 135 and to pull it into its inoperative position. A push on the handle 161 displaces the button relative to the handle 135 in a manner to release the projection 148 and the handle 135 is pushed out by the spring 132. Tension and compression springs 162, 163 return the handle 161 to its normal position relative to the sleeve 133. To lock the handle 135 in its retracted position, a key is inserted into the button 150 which is then turned until the tumblers engage a second slot 165 in the sleeve 136. The pin 153 thereupon enters a lateral extension of the helical slot 145 and any axial movement of the button relative to the sleeve 136 is prevented. A modification is described in which a pin 30, Fig. 12, carried by a locking member 26, shown partly developed, is biassed by springs 31, 32 into either end 3, 4 of a Z-shaped slot in the casing. The lateral movement of the pin 30 necessary to release the handle from its end positions are effected by a pin 36 on an extension of the button 33 engaging the surfaces 65, 66 of a slot in the locking member 26. When locked by a key the pin 36 moves into a slot 28. In the modification shown diagrammatically in Fig. 16, the movement of the button necessary to release the handle from its inoperative position is effected by a spring 44 which is compressed against a ring on 49 on the handle shank when the button is pressed in to release the handle from its operative position. The spring 44, through the pin 36 and cam slot 27 in the locking member, tends to force the pin 30 out of the end slot 46. This is prevented by a notch 45 until the handle and its shank are pressed inwards by an amount necessary to free the pin 30 from the notch, whereupon the pin 30 is moved out of the end slot 46 by the action of the spring 44. In this case the handle cannot be released from its inoperative position from inside the door. In the form diagrammatically shown in Fig. 20, the handle is released from either end position by pressure on the button 52. A sleeve 53 rotarily connected to the button and pressed outwards by a spring has a pin 54 co-operating with a slot in the handle shank, shaped as shown, and with the slotted end of a rotary sleeve 55 having a tooth 70 engaging a recess in a locking member 71 having a pin 74 acting in a manner similar to the pins 30 of the two examples just des. cribed. Pressure on the button causes the pin 54 to engage successively the surfaces 57, 59 and as it moves down the slope 59 it engages the edge 61 of the slotted end of the sleeve 55 and turns the latter to cause the tooth 70 to move the locking-member 71 to release the pin 74 from its locking slot. When the button is released, the pin 54 is brought back to its central position by engaging the slope 84 of the slot in the sleeve and a subsequent pressure upon it causes it to travel down the surfaces 56, 58 and turn the sleeve 55 and locking member 71 in the opposite direction. A non-axial lock is provided on the handle to secure the button against movement when required. Figs. 22, 23 and 24 show a further form in which a spindle 304 in the handle shank 303 carries a spring 330 one arm 331 of which engages in a recess 323 in a member 320 screwed into a press button 315 formed as a cylinder lock. The other end 332 of the spring engages in a hole in a member 327 pivoted at one end in the handle shank 303 and engaging at its other end in a Z-slot 308, 309, 310 in the casing 307. The member 320 extends to an end disc engaged by a spring 334 which initially presses out the button and tensions the spring 330 to force the member 327 into the part 308 of the Z-slot. Pressure on the button reverses the tension of the spring 330 and the handle shank can then be moved until the member 327 engages a notch 311 in the end 309 of the Z-slot. When the pressure is released the spring 334 again reverses the tension of the spring 330 and the member 327 tends to move in the direction A. Pressure on the handle sufficient to move the member 327 out of the notch 311 results in the release of the shank 303 which is then pushed out by a spring 333. A pin 319 on the button works in a L-slot 318 in a sleeve fixed to the shank 303, rotation of the button by a key bringing the pin 319 into a transverse part of the slot. Another modification is described in which a spring similar to the spring 330 acts upon a sliding bolt for engaging holes in the casing, one end of the bolt having a groove for engagement with a recessed hole in the casing which has the same function as the notch 311.