Patent GB-768671-A (GB)
Title: Improvements in and relating to ski-bindings
IPC: A63C9/00
Filed: 1953-03-10
Abstract: 768,671. Ski-bindings. MARKER, H. March 10, 1953 [March 25, 1952 ; May 7, 1952; Oct. 16, 1952], No. 6636/53. Class 132(1). A safety ski-binding comprises a pivotable support check adapted to abut the front edge of a ski-boot sole, the cheek pivoting sideways on the occurrence of a predetermined excessive torque between the boot and the ski, the support cheek being pivotally mounted at its mid-point on an arm rotatable about a stud arranged substantially perpendicularly to the upper surface of the ski, adapted to support the ski-boot sole over substantially the whole of the front edge of the sole and provided with a projecting flange which grips the front edge of the sole over the whole width of the support cheek. As shown in Figs. 1 and 3, two support cheeks 18 are used each of which is pivoted to a said arm 17. The studs 15 to which the arms 17 are pivoted are carried by a plate or a pair of plates secured to the ski. The heel of the boot is held by a plate 29 which can pivot on a screw 28 and which is adjustable in position by the provision of a slot 27 in the plate 29 for the screw 28. Members 30 to which laces can be connected engage the heel. The back of the heel is engaged by a spring connected in known manner to a cable 8 so that the toe of the boot is urged into contact with the cheeks 18 until the predetermined pressure of the spring is overcome by excessive torque. The toe cannot lift because of the projecting flange 18a. In the construction shown in Figs. 8 and 9, two arms 78 are each mounted on screwed studs 77 so that the height of the cheeks 80 can be adjusted. Each cheek is pivoted to its arms by a pin 79 and a spring urged ball 86 holds the cheek normally in a fixed position relative to the arm. The cheek can be locked to the arms when necessary by a locking member 96 which is slidable in slits in the arm and which can be pushed over the end of the cheek. The projecting flange 90 engages the upper edge of the sole. The whole of the boot is supported on a pivoted plate 99, movement of which is limited by a tongue 100 which engages a cut-out in the base plate 76 on which the studs 77 are mounted. The toe is urged into contact with the cheeks by a cable which engages the heel and which is tensioned by springs 105 the pressure of which is overcome by excessive torque. In a further construction, Fig. 4, two screwed studs 51 are adjustably mounted on a plate 43 which is slidably supported on a plate 42 screwed to the ski. The plate 43 is guided by pins 45 engaging a slot 44 and it is moved by a lever 70, the pivot of which is adjustably positioned and which is connected to the plate by a plunger 66 movable on a cylindrical member 67 against the pressure of a spring 68 which must be overcome by excessive torque. When the lever 70 is moved clockwise, the flanged cheeks 54 which are pivoted to arms 52 carried by the studs 51 are moved into contact with the toe of the boot and are held there by the pressure of the spring 68. The heel of the boot is engaged by members on a pivoted plate. The arms 12 are normally kept in a fixed position on the studs by a spring- pressed ball engaging a groove 50 in the studs. In any of the constructions a single cheek centrally positioned on the ski can be used.