US2743113A - Flexible running edge for ski - Google Patents

Flexible running edge for ski Download PDF

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US2743113A
US2743113A US298301A US29830152A US2743113A US 2743113 A US2743113 A US 2743113A US 298301 A US298301 A US 298301A US 29830152 A US29830152 A US 29830152A US 2743113 A US2743113 A US 2743113A
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ski
strip
edge
running
tabs
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Nelson S Griggs
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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
    • A63C5/00—Skis or snowboards
    • A63C5/04—Structure of the surface thereof
    • A63C5/048—Structure of the surface thereof of the edges

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  • the present invention relates to skis, and more particularly, to improved running edges for skis.
  • an object of the present invention is to overcome the foregoing difiiculties in a simple and economical manner.
  • Another object is to provide a practical and reliable running edge for skis which increases their useful life without sacrificing their normal flexibility.
  • Another object is to provide such a running edge which is adapted to extend from substantially the tip of the ski to the trailing edge thereof.
  • Another object is to provide such a running edge which very closely approaches the natural flexibility of the skis at the point of application thereto and at the same time strengthens the same.
  • a further object is to provide such a running edge which is suitable for application to skis of the leading brands of manufacture, as well as all other special designs.
  • the foregoing objects are generally accomplished by providing a running edge formed of a substantially flat serrated metallic strip of spring steel, for example.
  • the strip has relatively deep and wide recesses spaced apart lengthwise along one side edge of the strip to provide tabs of a width to anchor the same in the body of the ski and to provide narrow strip sections connecting adjacent tabs and being of approximately equal width 2,743,113 Patented Apr. 24, 1956 and thickness whereby to facilitate flexing of the strip laterally in all directions with respect to the longitudinal axis thereof.
  • Fig. 1 is a perspective view of a ski embodying the present invention.
  • Fig. 2 is an enlarged fragmentary elevational view of one form of running edge strip in accordance with the invention.
  • Fig. 2a is a sectional view taken along the line 2a2a on Fig. 2.
  • Fig. 3 is an enlarged fragmentary elevational view of another form of running edge strip in accordance with the invention.
  • Fig. 4 is an enlarged fragmentary perspective view illustrating the cross-section of one form of ski construction in which the strip shown in etither Fig. 2 or Fig. 3 may be embodied.
  • Fig. 5 is a view similar to that of Fig. 4 illustrating another form of ski construction.
  • Fig. 6 is an enlarged fragmentary elevational view of still another form of running edge strip in accordance with the invention.
  • Fig. 7 is an enlarged fragmentary sectional view illustrating a ski construction embodying the strip shown in Fig. 6.
  • a ski to which the present invention is applied is of a conventional shape, and consists of a body 10 having the usual curved leading end 11 terminating in a tip or point 12 and having a slightly curved trailing end 14.
  • a metallic running edge 15 at each side which is embedded in the body adjacent the running surface or underside of the body.
  • the present invention contemplates providing a continuous metallic strip serving as a running edge which may extend from about the point A at the tip 12 to the point B at the very end of the trailing end 14.
  • one form of running edge 15 is partially shown which comprises a substantially flat metallic strip, for example, a spring steel strip.
  • This strip is serrated, and, preferably has a series of relatively deep and wide recesses 16 spaced apart lengthwise along one side edge of the strip to provide a series of tabs 17 of a sufiicient length to anchor the same in the body of the ski and to provide narrow strip sections 18 connecting adjacent tabs and being of approximately equal width and thickness whereby to facilitate flexing of the strip laterally in all directions with respect to the longitudinal axis or length thereof.
  • Certain of the tabs are formed with an aperture 19 about halfway between the side edges of the strip.
  • the tabs, recesses and apertures are formed while the strip is soft, and the strip thereafter is tempered to render it springlike.
  • the strip may have the following approximate dimensions, all given in inches: I
  • tabs and recesses could be of equal length, but not exceeding the width of the strip.
  • the strip- is alength of rectangular, almostsquare (Fig-2a), spring-wire constituting the running edge per se and being provided with tabs for securing the wire to the body of the ski.
  • FIG. 3 another form of running edge is partially shown which is identical to that shownin Fig. 2, except that narrow sheared slits extend from the apertures to the side edge 21 opposite the side edge of the strip in which the serrations are'formed. In this manner, provision is made for ultimate ski flexibility to allow for elongation, in accordion fashion, and stretch of the ski dueto tension without sacrificing, in effect, thecontinuityof a solid running edge construction.
  • a Head type ski construction is illustrated embodying a running edge 15 which may be in accordance with that shown in either Fig. 2 or Fig. 3.
  • FIG. 5 another type of ski construction is illustrated comprising a wooden body 10 having a slot or recess therein ateach side adjacent the underside which extends from the tip to the trailing end.
  • An edge strip 15, which may be in accordance with that shown in either Fig. 2 or Fig. 3, is mounted therein with the tabs 17' secured by means of suitable adhesive and the edge 21- is exposed to provide the running edge.
  • Fig; 6 still another form of running edge strip 15 is illustrated which may be identical to the strip illustratedin either Fig. 2 or Fig. 3, except that the tabs 17are bent at an angle of with respect to the horizontal, as viewed in Fig. 7, when the strip is applied to a ski.
  • This form of strip provides a running edge at the side edges and the underside of the ski.
  • the present invention provides an improved ski by rea son of the novel running edge construction.
  • This edge has extreme flexibility, conforms to the contour of the ski without building up stresses, and is readily embedded in the ski body without the need for jigs or fixtures.
  • the serrations allow for flexibility at any angle of deflection, in fact, a torsional twist can be accomplished with seemingly equal ease.
  • the center-to-center spacing between serrations allows the adhesive to absorb the compressive forces developed in the wood which otherwise would shear the tabs away at the adhesive line or curb the flexular freedornof the strip.
  • the effective continuous solid running, edge will not permit the ski bottom to stretch or elongate, particularly at the zones closely adjacent the edge.
  • a ski comprising a body portion having a running surface and a recess at each side thereof adjacent said running surface and inclined with respect thereto and extending substantially from the tip of the ski to the trailing end thereof; a running edge element in each of said recesses extending from end to end thereof and inclined with respect to said running surface, each of said edge elements consisting of a unitary spring steel strip of substantially uniform thickness throughout the length and width thereof having transverse recesses spaced equidistantly apart lengthwise along one side edge of said strip to define transverse tabs and alternate lengthwise extending connecting sections at the other side edge of said strip, said tabs having a greater maximum lengthwise extending dimension than said sections as measured between two adjacent sections but not exceed ing the width of said strip and said sections having a transverse width about equal to the thickness of said strip whereby to facilitate flexing of said strip laterally in all directions with respect to the longitudinal axis thereof, said tabs being disposed in said ski body recesses and said sections being exposed at thesides of said ski body; and means
  • a ski comprising a body portion having a running surface and a recess at each side thereof adjacent said running surface and inclined with respect thereto and extending substantially from the tip of the ski to the trailing end thereof; a running edge element in each of said recesses extending from end to end thereof and inclined with respect to said running surface, each of said edge elements consisting of a unitary spring steel strip of substantially uniform thickness throughout the length and width thereof having a multitude of transverse recesses spaced equidistantly apart lengthwise along one side edge of said strip to define regularly spaced transverse tabs and alternate lengthwise extending connecting sections at the other side edge of said strip, said last mentioned recesses and said tabs having maximum lengthwise extending dimensions not exceeding the width of said strip and said sections having a transverse width about equal to the thickness of said strip whereby to facilitate flexing of said strip laterally in all directions with respect to the longitudinal axis thereof, said tabs being disposed in said ski body recesses and said sections extending partially outwardly of said ski body recesses

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Description

April 4, 1956 N. s. GRIGGS 2,743,333
FLEXIBLE RUNNING EDGE FOR SKI Filed July ll, 1952 INVQNTOR. Nelson 6. 111998 A'T'TURMEY United States Patent FLEXIBLE RUNNING EDGE FOR SKI Nelson S. Griggs, Northfield, Vt.
Application July 11, 1952, Serial No. 298,301
3 Claims. (Cl. 280-11.13)
The present invention relates to skis, and more particularly, to improved running edges for skis.
Heretofore, it has been proposed to improve the wearing qualities of skis in many ways. For example, relatively thick metallic strips have been applied to the edges of skis to prevent wear, such strips being secured to the skis by means of several dozen screws. After use of the skis for a time,.the screws loosen, and it is extremely diflicult and quite costly to properly re-secure the strips to the skis without impairing their usefulness and proper functioning of the skis.
More recently, it has been proposed to reinforce the running edges of skis by means of relatively thin metallic strips embedded in the body of the skis at each side thereof adjacent the running surface in a manner so that only the thin edges thereof are exposed. These strips are adapted to be anchored in diagonally extending slots or recesses in the body of the ski by means-of cement or adhesive, and additional fastening means such as pins may be driven from the sides of the ski, through the strips and into the body of the ski. In the actual use of skis so reinforced, it has been found that such a practically solid strip, although relatively thin, seriously alters the normal flexibility of the ski whereby much of the ability of the skis to respond to the skill of the expert skier is lost.
Accordingly, an object of the present invention is to overcome the foregoing difiiculties in a simple and economical manner.
Another object is to provide a practical and reliable running edge for skis which increases their useful life without sacrificing their normal flexibility.
Another object is to provide such a running edge which is adapted to extend from substantially the tip of the ski to the trailing edge thereof. 7
Another object is to provide such a running edge which very closely approaches the natural flexibility of the skis at the point of application thereto and at the same time strengthens the same.
A further object is to provide such a running edge which is suitable for application to skis of the leading brands of manufacture, as well as all other special designs.
Other and further objects of the invention will be obvious upon an understanding of the illustrative embodiment about to be described, or will be indicated in the appended claims, and various advantages not referred to herein will occur to one skilled in the art upon employment of the invention in practice.
In accordance with the present invention, the foregoing objects are generally accomplished by providing a running edge formed of a substantially flat serrated metallic strip of spring steel, for example. Preferably, the strip has relatively deep and wide recesses spaced apart lengthwise along one side edge of the strip to provide tabs of a width to anchor the same in the body of the ski and to provide narrow strip sections connecting adjacent tabs and being of approximately equal width 2,743,113 Patented Apr. 24, 1956 and thickness whereby to facilitate flexing of the strip laterally in all directions with respect to the longitudinal axis thereof.
In the drawing:
Fig. 1 is a perspective view of a ski embodying the present invention.
Fig. 2 is an enlarged fragmentary elevational view of one form of running edge strip in accordance with the invention.
. Fig. 2a is a sectional view taken along the line 2a2a on Fig. 2.
Fig. 3 is an enlarged fragmentary elevational view of another form of running edge strip in accordance with the invention.
Fig. 4 is an enlarged fragmentary perspective view illustrating the cross-section of one form of ski construction in which the strip shown in etither Fig. 2 or Fig. 3 may be embodied.
Fig. 5 is a view similar to that of Fig. 4 illustrating another form of ski construction.
Fig. 6 is an enlarged fragmentary elevational view of still another form of running edge strip in accordance with the invention.
Fig. 7 is an enlarged fragmentary sectional view illustrating a ski construction embodying the strip shown in Fig. 6.
Referring to the drawing in detail and more particularly to Fig. 1, there is shown a ski to which the present invention is applied. This ski is of a conventional shape, and consists of a body 10 having the usual curved leading end 11 terminating in a tip or point 12 and having a slightly curved trailing end 14. As previously indicated herein, such skis, if of modern manufacture, are provided with a metallic running edge 15 at each side which is embedded in the body adjacent the running surface or underside of the body. The present invention contemplates providing a continuous metallic strip serving as a running edge which may extend from about the point A at the tip 12 to the point B at the very end of the trailing end 14.
In Figs. 2 and 2a, one form of running edge 15 is partially shown which comprises a substantially flat metallic strip, for example, a spring steel strip. This strip is serrated, and, preferably has a series of relatively deep and wide recesses 16 spaced apart lengthwise along one side edge of the strip to provide a series of tabs 17 of a sufiicient length to anchor the same in the body of the ski and to provide narrow strip sections 18 connecting adjacent tabs and being of approximately equal width and thickness whereby to facilitate flexing of the strip laterally in all directions with respect to the longitudinal axis or length thereof. Certain of the tabs are formed with an aperture 19 about halfway between the side edges of the strip. Preferably, the tabs, recesses and apertures are formed while the strip is soft, and the strip thereafter is tempered to render it springlike.
In a practical embodiment of the present invention, the strip may have the following approximate dimensions, all given in inches: I
Width of strip W .2500 Thickness of strip T (19 gauge) .0420 Depth of recesses D .1875 Length of recesses L1 .1000 Height of tabs H .1875 Length of tabs L2 .2000 Length of sections l .1000 Width of sections w .0625 Diameter of apertures 19 .0938 Spacing between apertures 19 1.2500
These dimensions are given by way of example, 'and' 3 it" is not intended to'limit the present invention thereto in any manner. For example, the tabs and recesses could be of equal length, but not exceeding the width of the strip.
In effect; the strip-is alength of rectangular, almostsquare (Fig-2a), spring-wire constituting the running edge per se and being provided with tabs for securing the wire to the body of the ski. 3
In' Fig. 3, another form of running edge is partially shown which is identical to that shownin Fig. 2, except that narrow sheared slits extend from the apertures to the side edge 21 opposite the side edge of the strip in which the serrations are'formed. In this manner, provision is made for ultimate ski flexibility to allow for elongation, in accordion fashion, and stretch of the ski dueto tension without sacrificing, in effect, thecontinuityof a solid running edge construction.
In Fig. 4, a Head type ski construction is illustrated embodying a running edge 15 which may be in accordance with that shown in either Fig. 2 or Fig. 3.
In Fig. 5, another type of ski construction is illustrated comprising a wooden body 10 having a slot or recess therein ateach side adjacent the underside which extends from the tip to the trailing end. An edge strip 15, which may be in accordance with that shown in either Fig. 2 or Fig. 3, is mounted therein with the tabs 17' secured by means of suitable adhesive and the edge 21- is exposed to provide the running edge. A cover strip 22, for example a woven fiber glass tape, is adhered to the underside of the edge strip 15 to prevent the recesses 16- from being completely filled with a mass of adhesive 24" whichfillsthe bottom-of the slot, and a plastic running surface member or sole 25 is adhered to the underside of' the ski body with itsouter edge in contact with the edge 21 of the running edge strip.
In Fig; 6, still another form of running edge strip 15 is illustrated which may be identical to the strip illustratedin either Fig. 2 or Fig. 3, except that the tabs 17are bent at an angle of with respect to the horizontal, as viewed in Fig. 7, when the strip is applied to a ski. This form of strip provides a running edge at the side edges and the underside of the ski.
From the foregoing description, it will be seen that the present invention provides an improved ski by rea son of the novel running edge construction. This edge has extreme flexibility, conforms to the contour of the ski without building up stresses, and is readily embedded in the ski body without the need for jigs or fixtures. The serrations allow for flexibility at any angle of deflection, in fact, a torsional twist can be accomplished with seemingly equal ease. The center-to-center spacing between serrations allows the adhesive to absorb the compressive forces developed in the wood which otherwise would shear the tabs away at the adhesive line or curb the flexular freedornof the strip. The effective continuous solid running, edge will not permit the ski bottom to stretch or elongate, particularly at the zones closely adjacent the edge. This is considered an outstanding advantage, particularly in wooden ski constructions, because wooden fibers will withstand much less tension than compression. Therefore, unless these forces are restrained, diverted or absorbed in compression in the course of drastic bending of the ski, as in normal usage, a fracture would otherwise start with fiberfailure at some point on the ski bottom. In the ultimate, a longer lasting, more durable and better controllable ski is provided by the improvements in accordance with the present invention, and these advantages are attained in a simple, practical and economical manner.
As various changes may be made without departing from the spirit and scope of the invention and without sacrificing any of its advantages, it is to be understood that all matter herein is to be interpreted as illustrative and not in any limiting sense.
I claim:
1. A ski comprising a body portion having a running surface and a recess at each side thereof adjacent said running surface and inclined with respect thereto and extending substantially from the tip of the ski to the trailing end thereof; a running edge element in each of said recesses extending from end to end thereof and inclined with respect to said running surface, each of said edge elements consisting of a unitary spring steel strip of substantially uniform thickness throughout the length and width thereof having transverse recesses spaced equidistantly apart lengthwise along one side edge of said strip to define transverse tabs and alternate lengthwise extending connecting sections at the other side edge of said strip, said tabs having a greater maximum lengthwise extending dimension than said sections as measured between two adjacent sections but not exceed ing the width of said strip and said sections having a transverse width about equal to the thickness of said strip whereby to facilitate flexing of said strip laterally in all directions with respect to the longitudinal axis thereof, said tabs being disposed in said ski body recesses and said sections being exposed at thesides of said ski body; and means for adhesively bonding said tabs in said ski body recesses to integrally secure said edge elements to said skid body portion.
2. A skicomprising a body portion having a running surface and a recess at each side thereof adjacent said running surface and inclined with respect thereto and extending substantially from the tip of the ski to the trailing end thereof; a running edge element in each of said recesses extending from end to end thereof and inclined with respect to said running surface, each of said edge elements consisting of a unitary spring steel strip of substantially uniform thickness throughout the length and width thereof having transverse recesses spaced equidistantly apart lengthwise along one side edge of said strip and converging from said side edge to define serrate tabs and alternate'lengthwise extending connecting sections at the other side edge of said strip, said last mentioned recesses and said tabs having about equal lengthwise extending dimensions at the side edge of said strip in which said recesses are formed, said dimensions not exceeding the width of said strip, and said sections having a transverse width about equal to the thickness of said strip whereby to facilitate flexing of said strip laterally in all directions with respect to-the longitudinal axis thereof, said tabs being disposed in said ski body recesses and said sections being exposed at the sides of said ski body; and means for adhesively bonding said tabs in said ski body recesses to integrally secure said edge elements to said ski body portion.
3.. A ski comprising a body portion having a running surface and a recess at each side thereof adjacent said running surface and inclined with respect thereto and extending substantially from the tip of the ski to the trailing end thereof; a running edge element in each of said recesses extending from end to end thereof and inclined with respect to said running surface, each of said edge elements consisting of a unitary spring steel strip of substantially uniform thickness throughout the length and width thereof having a multitude of transverse recesses spaced equidistantly apart lengthwise along one side edge of said strip to define regularly spaced transverse tabs and alternate lengthwise extending connecting sections at the other side edge of said strip, said last mentioned recesses and said tabs having maximum lengthwise extending dimensions not exceeding the width of said strip and said sections having a transverse width about equal to the thickness of said strip whereby to facilitate flexing of said strip laterally in all directions with respect to the longitudinal axis thereof, said tabs being disposed in said ski body recesses and said sections extending partially outwardly of said ski body recesses;
and means for adhesively bonding said tabs in said ski.
5 6 body recesses to integrally secure said edge elements to 964,698 France Feb. 1, 1950 said ski body portion. 687,895 Germany Feb. 8, 1940 203,459 Switzerland June 16, 1939 References Cited in the file of this patent 226,469 Switzerland July 16, 1943 UNITED STATES PATENTS 6 95,128 Sweden Mar. 21, 1939 26,1 2 Suits Aug. 9, 1938 OTHER REFERENCES 2,470,227 Wheeler 1 1949 Modern Plastics, November 1950, pp. 82 and 83, Ski- FOREIGN PATENTS ing on Plastics 766,087 France Apr. 9, 1934 784,548 France Apr. 29, 1935
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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2971766A (en) * 1958-07-28 1961-02-14 Holley Danforth Fabricated ski
US3095207A (en) * 1956-09-21 1963-06-25 Head Howard Ski
US3194572A (en) * 1960-12-07 1965-07-13 Fischer Josef Laminated ski
US3232630A (en) * 1964-04-24 1966-02-01 Graves Corp Edge construction for skis
US3401949A (en) * 1966-09-16 1968-09-17 Fouillet Bernard Metallic edge members for skis
JPS4888173U (en) * 1972-01-26 1973-10-24
JPS5116822B1 (en) * 1968-02-27 1976-05-27
US4826201A (en) * 1987-07-28 1989-05-02 Varan Cyrus O Ski with increased maneuvering ability
US4906016A (en) * 1987-07-28 1990-03-06 Varan Cyrus O Ski with increased toe pinning ability
US5141243A (en) * 1990-01-22 1992-08-25 Pacific Coast Composites, Inc. Alpine ski with a simplified construction
US5230527A (en) * 1992-04-22 1993-07-27 Varan Cyrus O Snow ski with improved toe and mid-length design
US5678841A (en) * 1995-01-30 1997-10-21 Skis Rossignol S.A. Shell skis having longitudinally offset edge elements
US20030006583A1 (en) * 2001-05-16 2003-01-09 Stahlwerk Ergste Westig Gmbh Gliding edge profile
USD790016S1 (en) * 2015-05-13 2017-06-20 John Charles DeLeon Snowboard with underside traction grooves

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR766087A (en) * 1933-12-23 1934-06-21 Norge Ski As Skis with wear edges
FR784548A (en) * 1934-01-22 1935-07-22 Kalt Hans Protective edge for skis and other wooden objects
US2126152A (en) * 1935-06-26 1938-08-09 Chauncey G Suits Ski
CH203459A (en) * 1938-05-23 1939-03-15 Hediger Willy Process for the manufacture of a ski edge and edge obtained by this process.
DE687895C (en) * 1937-01-06 1940-02-08 Hugo Dornseif Ice skate with interchangeable track
CH226469A (en) * 1942-03-09 1943-04-15 Hofer Hans Skis with protective metal edges.
US2470227A (en) * 1947-09-15 1949-05-17 Carl L Wheeler Ski
FR964698A (en) * 1950-08-22

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR964698A (en) * 1950-08-22
FR766087A (en) * 1933-12-23 1934-06-21 Norge Ski As Skis with wear edges
FR784548A (en) * 1934-01-22 1935-07-22 Kalt Hans Protective edge for skis and other wooden objects
US2126152A (en) * 1935-06-26 1938-08-09 Chauncey G Suits Ski
DE687895C (en) * 1937-01-06 1940-02-08 Hugo Dornseif Ice skate with interchangeable track
CH203459A (en) * 1938-05-23 1939-03-15 Hediger Willy Process for the manufacture of a ski edge and edge obtained by this process.
CH226469A (en) * 1942-03-09 1943-04-15 Hofer Hans Skis with protective metal edges.
US2470227A (en) * 1947-09-15 1949-05-17 Carl L Wheeler Ski

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3095207A (en) * 1956-09-21 1963-06-25 Head Howard Ski
US2971766A (en) * 1958-07-28 1961-02-14 Holley Danforth Fabricated ski
US3194572A (en) * 1960-12-07 1965-07-13 Fischer Josef Laminated ski
US3232630A (en) * 1964-04-24 1966-02-01 Graves Corp Edge construction for skis
US3401949A (en) * 1966-09-16 1968-09-17 Fouillet Bernard Metallic edge members for skis
JPS5116822B1 (en) * 1968-02-27 1976-05-27
JPS4888173U (en) * 1972-01-26 1973-10-24
US4826201A (en) * 1987-07-28 1989-05-02 Varan Cyrus O Ski with increased maneuvering ability
US4906016A (en) * 1987-07-28 1990-03-06 Varan Cyrus O Ski with increased toe pinning ability
US5141243A (en) * 1990-01-22 1992-08-25 Pacific Coast Composites, Inc. Alpine ski with a simplified construction
US5230527A (en) * 1992-04-22 1993-07-27 Varan Cyrus O Snow ski with improved toe and mid-length design
US5678841A (en) * 1995-01-30 1997-10-21 Skis Rossignol S.A. Shell skis having longitudinally offset edge elements
US20030006583A1 (en) * 2001-05-16 2003-01-09 Stahlwerk Ergste Westig Gmbh Gliding edge profile
USD790016S1 (en) * 2015-05-13 2017-06-20 John Charles DeLeon Snowboard with underside traction grooves

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