Abstract 943,048. Ski-bindings. H. MARKER. April 13, 1961, No. 13394/61. Heading A6D. A tightening device for ski-bindings comprises a tightening lever and at least one helical spring connected through a link to the lever, the short lever arm of the tightening lever which in use is closer to the boot heel than the main part of the tightening lever having a roller projecting beyond the lever arm, the shaft of the roller being at right angles to the plane of movement of the tightening lever and the roller being supported in use on and being arranged to roll in a groove in the heel of the ski boot on actuating the tightening lever. A ski boot 2 has a safety plate 3 engaging the toe and a tightening device 5 engaging the heel 4. A strap 6 may additionally engage the heel. One end of a spring 9 and one end of a link 18 pivotally connected to the tightening lever 7 are secured to a plate 13 fast or rotatable on the ski. The plate 13 has two lateral check plates 15 and two rings 16 through which the strap 6 passes. The roller 10 is mounted on the short arm 7a of the lever 7 and a lever 8 pivotally connects the short arm with the other end of the spring. Two helical springs 19, 20 may be adjustably attached to side plates 32 on a rotatable plate 30 and to U-shaped connecting elements 25, 26 pivotally connected to the short arm 22a of the tightening lever 22 and to a link 21 pivoting on the lever 22. A roller 23, 24 rotates on each pivotal connection of the elements 25, 26. Lugs 33 on the plate support the device in a raised position. In another embodiment the ends of two springs may be connected to a cable 37 guided by staples and a holding device on the ski in front of the boot. One end of the cable may be connected to a threaded bolt 44 secured to a helical spring. A nut 42 on the bolt has a rocker arm 45 which engages over the end of the tightening lever 41 and which pivots under excess strain to release the lever and allows the device to open automatically.
A TIGHTENING DEVICE FOR SKI BINDINGS, SAID DEVICE BEING MOUNTABLE ON A SKI AND BEING ENGAGEABLE WITH THE HEEL OF A SKI BOOT, COMPRISING: TWO, SUBSTANTIALLY RECTILINEAR, COIL SPRINGS ARRANGED TO EXTEND ALONG THE TWO LONGITUDINAL SIDES OF THE HEEL FROM THE FRONT TO THE REARWARD END THEREOF; A TIGHTENING LEVER HAVING A LONG LEVER ARM AND A SHORT LEVER ARM, THE TIGHTENING LEVER BEING PIVOTALLY MOVABLE IN A PLANE WHICH EXTENDS LENGTHWISE OF THE SKI, THE SHORT LEVER ARM BEING PIVOTALLY CONNECTED TO THE REARWARD END OF ONE SPRING; A LINK PIVOTALLY CONNECTED AT ITS RESPECTIVE ENDS TO SAID LONG LEVER ARM AND TO THE REARWARD END OF THE OTHER SPRING, SAID LINK BEING ADAPTED TO BE DISPOSED BEHIND THE REAR END OF THE HEEL AND EXTEND SUBSTANTIALLY CROSSWISE THEREOF; A FIRST ROLLER CONNECTED TO THE REARWARD END OF SAID ONE SPRING FOR ROTATION ABOUT AN AXIS PERPENDICULAR TO THE PLANE OF MOVEMENT OF THE TIGHTENING LEVER; A SECOND ROLLER CONNECTED TO THE REARWARD END OF SAID OTHER SPRING FOR ROTATION ABOUT AN AXIS PERPENDICULAR TO THE PLANE OF MOVEMENT OF THE TIGHTENING LEVER; SAID ROLLERS BEING DISPOSED BETWEEN THE REARWARD ENDS OF SAID SPRINGS AND BEING OF SUCH SIZE THAT THEY EXTEND INWARDLY A SUBSTANTIAL DISTANCE BEYOND THE INNERMOST EDGES OF SAID TIGHTENING LEVER AND SAID LINK SO THAT THE PORTION OF THE PERIPHERY OF SAID ROLLERS CLOSEST TO THE HEEL WILL ENGAGE THE HEEL AND HOLD THE REARWARD ENDS OF THE SPRINGS OUT OF ENGAGEMENT WITH THE HEEL.
Claim 2
Dependent Claim
251 words
A TIGHTENING DEVICE FOR SKI BINDINGS, SAID DEVICE BEING MOUNTABLE ON A SKI AND BEING ENGAGEABLE WITH THE HEEL OF A SKI BOOT, COMPRISING: TWO, SUBSTANTIALLY RECTILINEAR, COIL SPRINGS ARRANGED TO EXTEND ALONG THE TWO LONGITUDINAL SIDES OF THE HEEL FROM THE FRONT TO THE REARWARD END THEREOF; A TIGHTENING LEVER HAVING A LONG LEVER ARM AND A SHORT LEVER ARM, THE TIGHTENING LEVER BEING PIVOTALLY MOVABLE IN A PLANE WHICH EXTENDS LENGTHWISE OF THE SKI, THE SHORT LEVER ARM BEING PIVOTALLY CONNECTED TO THE REARWARD END OF ONE SPRING; A LINK PIVOTALLY CONNECTED AT ITS RESPECTIVE ENDS TO SAID LONG LEVER ARM AND TO THE REARWARD END OF THE OTHER SPRING, SAID LINK BEING ADAPTED TO BE DISPOSED BEHIND THE REAR END OF THE HEEL AND EXTEND SUBSTANTIALLY CROSSWISE THEREOF; A FIRST ROLLER CONNECTED TO THE REARWARD END OF SAID ONE SPRING FOR ROTATION ABOUT AN AXIS PERPENDICULAR TO THE PLANE OF MOVEMENT OF THE TIGHTENING LEVER; A SECOND ROLLER CONNECTED TO THE REARWARD END OF SAID OTHER SPRING FOR ROTATION ABOUT AN AXIS PERPENDICULAR TO THE PLANE OF MOVEMENT OF THE TIGHTENING LEVER; SAID ROLLERS BEING DISPOSED BETWEEN THE REARWARD ENDS OF SAID SPRINGS AND BEING OF SUCH SIZE THAT THEY EXTEND INWARDLY A SUBSTANTIAL DISTANCE BEYOND THE INNERMOST EDGES OF SAID TIGHTENING LEVER AND SAID LINK SO THAT THE PORTION OF THE PERIPHERY OF SAID ROLLERS CLOSEST TO THE HEEL WILL ENGAGE THE HEEL AND HOLD THE REARWARD ENDS OF THE SPRINGS OUT OF ENGAGEMENT WITH THE HEEL.