US1665537A - Ski attachment - Google Patents

Description

April 10, 1928.

C. DUMAIS SKI ATTACHMENT Filed March 5. 1927 Inventor [ZIQU/MJZUIZQZIV Patented Apr. 10, 1928.

oLEoPHns ntrlvu rrs, or LIMoILo'U; ouniano, CAN-ADA;

sKI ATTACHMENT.

llppl ic'ationfiled March as. sea: in). 172,447.

} Ihe present inventiong relates to attach ments for skis and has for its primaryobject to provide a device which will auto,- matically engage the ground to prevent backward moven'ient of the ski.

A further; object of the invention is the provision of; attachment of the above character formed so as to be normally urged to a downwardground engaging position.

still further obj ectof the invention-is to provide a ski, attachment constructed so to avoid displacementof the ground en' gaging; member while in use, 1

Another ob ect of the invention IS the provision of a back; slipping ski attachment which issimple' and durable of construction and which w-illefliciently perform the" funcq c nt dedn 1 o Other objects and advantages will be apparentasthe descriptionprogresses, In the, accompanying; drawings forming a part of this specification and in which like,

referen ce characters are employed to desig nate corresponding parts throughout the same. Figure 1 is a perspective View of a conventional type of ski showing my improved attachment mounted in operative position thereon;

Figure 2 is an enlarged side elevational view of the attachment in operative position; Figure 3 is a vertical transverse sectional view taken on the line 33 of Figure 2;

Figure '4 is an enlarged perspective view of the assembled device; and

Figure 5 is an enlarged vertical sectional view taken on the line 5-5 of Figure 3.

Referring to the drawings wherein for the purpose of illustration is 10 generally designates a conventional type of ski embodying a longitudinal body having a vertical diminishing taper towards its rear end and formed with an upwardly curved front or toe portion 11. Secured on the intermediate portion of the ski body 10 is a foot pad 12. As will be readily understood by those familiar with the operation of skis, the wearer moves his legs forwardly and rearwardly in the simulation of walking so as to slide the skisover the ground. Each forward movement describes a step of forward progress while any rearward movement retards the progress. With this in mind, my invention contemplates the pro- "ski so as to shown a preferredembodlment of the invention, the numeral vision of an attachment adapted to be socured on the intermediate portion of the ski body immediately forward of the foot con nection to the skis soas toeliminate the lost motion occasioned thereby and at the same time the device is arranged so that little or no interference tothe forward sliding movement of the v ski will be effected. r I

With particular reference to-the structure of my, improved ski attachment the numeral 13 embodies a bracket member arranged for prevent rearward movement of fixed connectionon the ski,-' comprising an upright; U-shaped bracketl fra'me embodying vertically disposed side, legs 14 offset laterally at their lower ends for extension at the side eclges of the mediate longitudinal connecting bar having; its in termediate portion bent to form a U sha-ped 'tongae'lt)" directedv at] a vreari'r' ard downwardly inclined p'os itioii as clearly indicated in Figure 4;. The loweiiendis' of theside legs 14- are bentto pro'vide horizontal rearwardly extending. side bars] 17. contactingi with the sides of the ski body and terminating in inwardly projecting extensions 18 adapted to be firmly secured in recesses formed in the ski. The forward end of the bracket frame is rigidly held in position by means of staples 19 embracing the lower ends of the side legs 14 and driven into the side of the maintain the bracket frame 13 1n an upright vertical position transversely of the ski. With this construction, itwill be apparent that the transverse connecting bar 15 will be supported in an elevated position on the ski immediately forward of the foot pad 12.

Adapted for complementary connection with the bracket member 13 and arranged for pivoted movement thereabout is a ground engaging spur 2O embodying a U-' shaped body portion 21 looped at its ends to provide pivotears22 which are loosely fitted about the transverse frame bar 15. The rear end portion of the spur 20 is formed to provide a pair of parallel laterally oliset tines 23 bent to assume a downward angular po sition with respect to the longitudinal extension of the body portion 21 and having their lower ends tapered to form ground engaging points 2%. It will thus be noted that the tines 23 of the spur are designed to extend at the sides of the ski body and spaced ski body. The interi portionof the frame embodies a slightly therefrom so that the rear pointed ends 24 will rest on the ground by force of gravity, while the U-shaped forward body portion of the spur is reduced in transverse extension so as of the ski and thus limit the downward swingingmovement with the spur when the ski assumes a position elevated from the ground. ures land 5, the upward swinging movement of the spur is also restricted to a posi tion slightly above the lowersur'tace ot' the ski body by the tongue 16 formed on the support frame overhanging the transverse connecting bar of the spur body 21.

In use,nas the ski is longitudinally slid over the ground in a forward direction-the tines ot' the spur will drag on the ground at p the sides of the ski body. \Vhenthe forward stride iscompleted and the wearer proceeds totake a forward stride with the other ski the front ski will be held in position against backward slipping movement by the ground engaging action of the spur tines. In this manner it will be readily appreciated that the lost rearward motion of the skis is practically eliminated so that greater speed can be obtained-and the skis may be used with, diminished effort.

It is to be understood that the form of my invention herewith shown and described is to be taken as the preferred example of the same, and that various changes as to the shape, size and arrangement of parts may be resorted to withoutdeparting from the spirit to rest upon theside portions As indicated to advantage in Fig of the invention orthe scope of the submy invention, I

rear side portions offset laterally and pointt ed at the ends to normally engage the ground, the forward portion 'ot the spur be ing adaptedto engagethe tongue of the bracket in an elevated position of the spur to limit the upward swinging movement thereof. l

2. A ski attachment comprising an upright bracket rigidly attached to the ski body, a rearwardly projecting tongue formed on the intermediate portionof the bracket, and a substantially V shaped wire spur, the closed end of the spur being bent around the bracket so as to pivotally connect the spur to the bracket,the' ends of the legs of the spur being pointed normally engageable with the ground to prevent back sliding movement of the ski, the closed end of the spur being arranged to engage the tongue formed on the bracketto limit the upward swinging movement of the spur. l

In'witness whereof my hand, i

CLEOPHAS DUMAIS;

I have hereunto set

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