US3147986A - Front throw release - Google Patents

Front throw release Download PDF

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Publication number
US3147986A
US3147986A US198821A US19882162A US3147986A US 3147986 A US3147986 A US 3147986A US 198821 A US198821 A US 198821A US 19882162 A US19882162 A US 19882162A US 3147986 A US3147986 A US 3147986A
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US
United States
Prior art keywords
ski
spring
lever
toggle
binding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US198821A
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English (en)
Inventor
Hvam Hjalmar
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US198821A priority Critical patent/US3147986A/en
Priority to AT331263A priority patent/AT250226B/de
Priority to CH642563A priority patent/CH391545A/fr
Application granted granted Critical
Publication of US3147986A publication Critical patent/US3147986A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00—Ski bindings
    • A63C9/08—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/083—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with loosenable cable strap

Definitions

  • My present invention comprises an improvement in ski bindings, specifically being an improved form of front throw release for such bindings.
  • the object of the present invention is to provide means for holding a skiers boot in position upon the ski during normal maneuvers, but which will release the boot from the ski in the event the skiers heel is raised from the surface of the ski beyond a safe position.
  • Such raising may occur when the skier is falling forwardly while the ski remains against the snow surface and pointed in the direction of forward movement. If a skiers boot were held immobile with respect to the ski under such conditions, something would have to break, and what usually breaks is the skiers leg. For this reason the skier wants to have his foot released before a bone snaps, a tendon is pulled, or a sprain is incurred. At the same time the skier does not want to have his foot released until the critical danger point is reached, since he may wish to lean far forwardly with respect to the ski, such as during the execution of a jump. Obviously, if his boot should be released during such a normal maneuver the binding would cause a serious accident rather than protect him from injury due to an accident caused by some other event.
  • the present invention accomplishes the foregoing by releasing the boot when necessary, but holding it to the ski during violent but well executed maneuvers.
  • An object of the present invention is to provide means of the foregoing character which may be assembled upon 'a ski in fixed position, and yet may be adjusted to different boot lengths without decreasing the efficiency lthereof.
  • a further object of the present invention is to provide means of the foregoing character which is easily assembled of easily manufactured parts and yet will be sturdy and safely withstand normal using shocks.
  • a further object of the present invention is to provide means of the foregoing character which may be rapidly adjusted to safely release the skiers boot for persons of widely varying physical structure.
  • the foregoing object is accomplished by providing toggle release means which may be easily adjusted to cause the release to occur when a relatively light tensioning force is applied to a tension spring assembly when the ski is used by a slightly built person, or rapidly adjusted in the other direction to increase the amount of spring tension required to release the boot of a heavy person.
  • FIG. 1 is a plan view of a portion of a ski having the present invention applied thereto and illustrated in operative condition;
  • FIG. 2 is a side View of FIG. 1;
  • FIG. 3 is a partial vertical section taken substantially along line 3-3 of FIG. l;
  • FIG. 4 is a view similar to FIG. 3 with certain parts shown in full;
  • FIG. 5 is a view similar to FIG. 4 showing the initiation of a releasing action of the device
  • FIG. 6 is a vertical section taken line 6-6 of FIG. 4;
  • FIG. 7 is a vertical section taken substantially along line 77 of FIG. 5;
  • FIG. 8 is a side elevation of the releasing means in fully released condition.
  • the numeral 10 represents a ski and 11 indicates a toe-engaging means such as disclosed and claimed in my prior Patent No. 2,994,543, issued August l, 1961. It is to be appreciated that any other suitable toe-engaging means may be utilized in the combination.
  • a iiexible binding 12 such as a steel cable is provided, the cable being formed into an endless loop, the forward portion of which extends across the top of the ski forwardly of the toe-engaging means 11 and the rear portion of which extends around the heel of the ski boot (not shown).
  • the opposite side flights of the cable pass through guide members .1.3 fixed to the ski respectively at opposite sides thereof, such guide members slidably engaging the binding so that it may move longitudinally with respect to the ski, and the guide members preventing upward movement of the forward portion of the binding with respect to the upper surface of the ski.
  • the rear portion of the binding may raise quite a distance from the surface of the ski as the skier rises on this toes, thus lifting the heel of the ski boot from the surface of the ski.
  • the present invention comprises an anchor member 15 secured to the upper surface of the ski along the longitudinal centerline thereof as by means of screws 16.
  • the anchor member comprises a hook portion 17 which extends upwardly and then rearwardly in spaced relation to the surface of the ski.
  • a first transverse pivot 1S is mounted on the anchor member within the bight of the hook member 17 and a toggle assembly including a toggle generally indicated at 19 is pivotally mounted on the first pivot 18 and extends rearwardly from the anchor member into engagement with the forward end of the binding 12 through the medium of a separable binding hook 211.
  • the toggle comprises a first toggle link 21 including a central portion 22 operatively overlying the hook portion 17 and a spaced pair of link arms 23 which extend rearwardly from the anchor member.
  • a second pivot comprising a pair of pivot studs Z4 is mounted at the free end of the first link and a second link 25 is pivotally supported thereby.
  • the link 25 comprises a trough-shaped member having forwardly extending spaced arms 26 which extend forwardly with their ends when in operative position engaged beneath the hook member 17, whereby the front end of the toggle is held against vertical separation relative to the surface of the ski.
  • a third transverse pivot 27 spans the space between the arms 26, the pivot 27 operatively lying overcenter above the centerline between the first and second pivots when the toggle is in operative condition. The tension of the binding against the skiers boot is thereby held by the toggle during normal maneuvers.
  • a spring assembly generally indicated at 36 is pivotally mounted upon the third pivot 27 and extends rearwardly therefrom past the end of the toggle and terminates in the binding hook 20.
  • the spring assembly comprises a tension spring 31 which extends longitudinally rearwardly from the pivot 27, in the forward end of which there is engaged a threaded plug 32 threaded into the convolutions of the spring and providing a pivot journal.
  • a second threaded plug 33 is engaged with the convolutions of the rear end of the spring 31, this plug comprising a faceted head which may be engaged by a wrench for substantially along holding the plug immobile when desired, or for firmly tightening the plug in position so that it will hold itself immobile at most times.
  • the plug 33 has a longitudinally extending threaded bore therethrough in which there is threadedly engaged a long adjusting screw 35, the forward end of which extends forwardly within the spring 3l and terminates closely adjacent the inner end of the plug 32 when the device is adjusted for a short boot.
  • the screw 3S may be rotated to lengthen the spring device so that the ski may accommodate longer boots.
  • the rear end of the screw has an Unthreaded, reduced portion into which is clamped the swivel neck of the claw member 2G so that the claw member is rotatably mounted upon the screw.
  • the exposed threaded portion of the screw 35 threadedly supports a knurled adjusting nut 40 which may be rotated by the fingers when the toggle device is open and thereby moved longitudinally along the screw 3S.
  • the forward end of the nut is provided with an annular groove in which is engaged the upwardly extending follower end portion 4i of a slide 42 resting on the surface of the ski.
  • the slide is in the form of a metal sheet formed into an upwardly facing trough, the bottom of which is held spaced from the upper surface of the ski by a pair of rearwardly extending wings 43 at the rear, and a pair of forwardly extending wings 44 at the front, which wings provide four spaced points of contact so that friction is minimized.
  • the intermediate portion of the plate is bent upwardly to provide a pair of curved portions 45 overhanging and slidably embracing the spring 31 whereby the slide is held in operative position.
  • Each of the arms 26 of the link 25 is provided with a downwardly facing cam 47 which lies forwardly of the pivot 24.
  • Each of the wings 4d is provided with an upwardly extending second cam d8 which is operatively positioned slightly forwardly of the cam i7 (FlG. 4).
  • the operative spacing of the cams may be adjusted by rotating the nut i0 so that they may be placed close together for releasing the toggle under slight extension of the spring 3i, or may be spaced farther apart so that a greater tensioning force is required to release the toggle.
  • the length of the spring assembly is adjusted by rotating the screw 35 so that the device may accommodate boots of different length, the nut 4i) must be thereupon rotated to adjust the operative spacing of the cams 47 and 4S.
  • the link 25 is provided with a rearwardly extending portion t) which provides an operating lever for setting or opening the toggle.
  • the operating lever is preferably provided with a slot S1 in its upper surface through which the nut 4d may be observed.
  • the operation of the device is as follows.
  • the toggle When the toggle is opened as seen in FIG. 8, the binding 12 is slackened so that the skier may place his boot on the ski with the toe of the boot engaged against the toe-retaining means 1l, and then engage the binding with the heel of the boot.
  • the lever Sti may now be thrown rearwardly to set the toggle and place the binding under tension of the spring 3l, forcing the toe of the boot against the toeengaging member il.
  • the skier may raise his heel from the surface of the ski without releasing the front throw release, to an extent depending upon the adjustment of the screw 35 longitudinally and the adjustment of the spacing of the cams.
  • a front throw release means comprising an anchor member fixed to the ski forwardly of the forward end of said flexible binding
  • a tension spring pivotally connected to the other end of said toggle, extending rearwardly therefrom and connected to the forward end of said binding
  • said toggle comprising a downwardly facing cam
  • a ski having toe-engaging means fixed to the ski for preventing forward movement of a skiers boot with respect of the ski
  • said toggle comprising a first link pivotally mounted on and extending rearwardly from said first pivot
  • a third transverse pivot mounted on the free end of said second link and operatively lying overcenter with respect to said first and second pivots above the centerline therebetween, and
  • a tension spring assembly pivotally mounted on said third pivot, extending rearwardly beyond said second pivot and engaged with the forward end of said binding
  • said spring assembly including a tension spring operatively under tension yieldably to urge the toe of the boot against said toe-engaging means
  • said second toggle link including a downwardly facing first cam between said second and third pivots
  • said spring assembly including a slide member connected to the rearward end of said spring assembly, extending forwardly beyond said second pivot and resting on the surface of the ski,
  • said slide including an upwardly facing second cam operatively lying forwardly of said first cam and engagcable therewith upon extension of said spring,
  • said spring assembly comprises a longitudinally extending screw extending coaxially into ⁇ and rearwardly from the rear end of said tension spring
  • said spring assembly comprises la longitudinally extending screw extending coaxially into and rearwardly from the rear end of said tension spring
  • a front throw release means comprising an anchor member fixed to the ski forwardly of the toe-engaging means
  • tension spring having a rear end connected to the heel-binding
  • a toggle connected to the anchor member and the other end of the spring and adapted to ytension the binding through the spring
  • cam means fixed to the rear end of the spring and adapted to be pulled backwardly along the ski by excess tension on the heel-binding for engaging the overeenter joint and pushing the overcenter joint to a position collapsing the toggle
  • cam means being slidable along th ski and positively connected solely to the spring.
  • a front throw release for a ski including a toeengaging means and a flexible binding for holding the heel of a ski boot
  • an anchor member adapted to be fixed to the ski in a position ahead of the toe-engaging means
  • a toggle having a breakable joint and connected to the anchor member and adapted to lie along the ski when in operative condition
  • tension spring means having a front end connected to the toggle and also having a rear end connected to the flexible binding
  • cam means slidable along the ski and positively connected to the rear end of the spring means in a position such that when the spring means is stretched to a predetermined extent the cam means breaks the toggle joint
  • the cam means being positively connected solely to the spring means.
  • cable means extending along a ski and having a rear portion adapted to engage a heel of a ski boot on the ski,
  • the lever also being pivotally connected at a second, end portion thereof to the forward end of the spring and movable between a releasing position in which the first portion thereof is positioned above the centerline of the spring ⁇ and a locking position in which the first portion thereof is positioned below the centerline of the spring,
  • the lever also being provided with a cam follower portion projecting downwardly therefrom when the lever is in its locking position
  • cable means extending along a ski having a rear portion adapted to engage a heel of a ski boot on the ski
  • tension spring means extending along the ski forwardly of the cable means
  • the lever also being pivotally connected at a second, end portion thereof to the forward end of the spring means and movable between a releasing position in which the first portion thereof is positioned above the centerline of the spring means and a locking position in which the first portion thereof is positioned below the centerline of the spring means,
  • the lever also being provided with a cam follower portion projecting downwardly therefrom when the lever is in its locking position
  • coupling means coupling the cable means to one end of the spring means
  • link means connecting a second point of the lever spaced along the lever from the first point to form a toggle-joint-linkage with the lever and the spring means and movable between a collapsed position and a locked position
  • the second point of the lever being positioned farther from the post means than the first point of the lever when the toggle-joint-linkage is in its locked position and also being positioned below the line of force between the spring means and the first point of the lever when the toggle-joint-linkage is in its locked position
  • the hook portion serving to engage and hold against upward movement the first point of the lever as the cam means moves the second point of the lever upwardly to said overcenter, collapsing position.
  • a cable extending along a ski and having a rear portion adapted to engage the heel of a ski boot on the ski, anchor means positioned on the ski in front of the ski boot,
  • a link having a free end portion and connected pivotally at a pivot point spaced substantially from the end portion thereof to the rear to the rear end of the arm and movable between a folded position in which the free end portion of the link is positioned forwardly along the ski from the pivot point and an extended position in which the free end portion of the link is positioned rearwardly along the ski from the pivot point,
  • tension spring connected at a forward end thereof to the free end portion of the link and connected at the rear end thereof to the cable
  • cam means carried by the rear end of the spring in a position under the link when the link is in its folded position for actuating the holding means to permit movement of the link to its extended position and movable freely for an indefinite distance with the rear end of the spring relative to the arm and the link.
  • a cable extending along a ski and having a rear portion adapted to engage the heel of a ski boot on the ski
  • an anchor post positioned on the ski in front of the normal position of the ski boot on the ski.
  • a channel-shaped lever connected pivotally at a pivot point thereon to the rear end of the arm and movable between a folded position in which a portion of the lever is positioned forwardly along the ski from the pivot point and the channel-shaped lever faces downwardly and an extended position in which said portion of the lever is positioned rearwardly along the ski from the pivot point and the channel-shaped lever faces upwardly,
  • tension spring connected at a forward end thereof to said portion of the lever and connected at the rear end thereof to the cable
  • cam means carried by the rear end of the spring in a position covered by the lever when the lever is in its folded position for actuating the holding means to permit movement of the lever to its extended position and movable with the rear end of the spring relative to the arm and the lever without any positive restraint by the arm and the lever,
  • the cam means having a generally tubular guide portion extending loosely around the spring.
  • cam slide connected at its rear end to the rear end of the spring and having a cam adapted to push the joint between the lever and the link upwardly and overcenter to collapse the linkage when maximum safe tension is applied to the spring
  • the cam serving when the toggle is in the folded, con-" tracted condition thereof to engage the underside of the lever at a point sufficiently far forward from the joint of the link and the lever to prevent downwardv movement of the forward end of the lever to an extent releasing the toggle when the ski is subjected to vertical jars or shocks.
  • overhanging member is a rearwardly extending hook on the post adapted to overhang the end of the lever which is connected to the tension spring to keep that end of the lever from moving upwardly with the central portion of the lever when the cam pushes the central portion of the lever upwardly to break the locked condition of the toggle.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
US198821A 1962-05-31 1962-05-31 Front throw release Expired - Lifetime US3147986A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US198821A US3147986A (en) 1962-05-31 1962-05-31 Front throw release
AT331263A AT250226B (de) 1962-05-31 1963-04-24 Sicherheitsstrammer für eine Skibindung
CH642563A CH391545A (fr) 1962-05-31 1963-05-22 Dispositif de fixation de skis de sécurité

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US198821A US3147986A (en) 1962-05-31 1962-05-31 Front throw release

Publications (1)

Publication Number Publication Date
US3147986A true US3147986A (en) 1964-09-08

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Application Number Title Priority Date Filing Date
US198821A Expired - Lifetime US3147986A (en) 1962-05-31 1962-05-31 Front throw release

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US (1) US3147986A (fr)
AT (1) AT250226B (fr)
CH (1) CH391545A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070170695A1 (en) * 2006-01-20 2007-07-26 Salomon S.A. Safety binding for a boot on a ski

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR882479A (fr) * 1955-12-09 1943-06-04 Fixation de ski à levier tendeur élastique réglable
FR1115441A (fr) * 1953-10-09 1956-04-24 Dispositif de sécurité pour attaches de ski à serrage à l'avant
US2747885A (en) * 1954-04-13 1956-05-29 Weiner Metallwaren Und Schnall Ski binding with tension cable
US2793046A (en) * 1953-11-23 1957-05-21 Eckel Heinrich Automatically releasable ski binding
AT212197B (de) * 1958-02-05 1960-11-25 Heinrich Eckel Bei Überbeanspruchung sich öffnende Skibindung
US2994543A (en) * 1960-05-09 1961-08-01 Hvam Hjalmar Toe holding device for skis
US3012793A (en) * 1960-03-09 1961-12-12 Beyl Jean Joseph Alfred Ski-binder safety cable-adjuster
AT220530B (de) * 1960-06-07 1962-03-26 Karl Kinzl Sicherheitsstrammer für Skibindungen

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1115441A (fr) * 1953-10-09 1956-04-24 Dispositif de sécurité pour attaches de ski à serrage à l'avant
US2793046A (en) * 1953-11-23 1957-05-21 Eckel Heinrich Automatically releasable ski binding
US2747885A (en) * 1954-04-13 1956-05-29 Weiner Metallwaren Und Schnall Ski binding with tension cable
FR882479A (fr) * 1955-12-09 1943-06-04 Fixation de ski à levier tendeur élastique réglable
FR68381E (fr) * 1955-12-09 1958-04-29 Fixation de ski à levier tendeur élastique réglable
AT212197B (de) * 1958-02-05 1960-11-25 Heinrich Eckel Bei Überbeanspruchung sich öffnende Skibindung
US3012793A (en) * 1960-03-09 1961-12-12 Beyl Jean Joseph Alfred Ski-binder safety cable-adjuster
US2994543A (en) * 1960-05-09 1961-08-01 Hvam Hjalmar Toe holding device for skis
AT220530B (de) * 1960-06-07 1962-03-26 Karl Kinzl Sicherheitsstrammer für Skibindungen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070170695A1 (en) * 2006-01-20 2007-07-26 Salomon S.A. Safety binding for a boot on a ski

Also Published As

Publication number Publication date
CH391545A (fr) 1965-04-30
AT250226B (de) 1966-10-25

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