US2235164A - Skifastening device - Google Patents

Description

March 18, 1941. P. PFEIFFER SKI FASTENING DEVICE Filed March 10, 1939 .EEEEEEEEEEEEEEEEEEQ Patented Mar. 18, 1941 Application March 10, 1939, Serial No. 261,020 In Germany March 10, 1938 (on. zen-11.35)

4 Claims.

It is known, in ski fastening devices to provide on the sldlfixation points for the heel pull element for obtaining, on the one hand, a horizontal pull and, on the other hand, an oblique or down- 5 Ward pull. At the same time it has been proposed, to secure the heel pull element on hinges to be swung upwards and downwards, in addition to the possibility of adjusting the length bysliding as required between notches connected by a 1 longitudinal slot.

For this purpose separate hinge cheeks are arranged behind the ski cheeks.

The present invention relates to a device, in which the point of hooking onthe heel pull mem- 15 her remains the same and supporting points are provided in front of the ski cheeks and lateral thereof. Apart from the displacing of the pulling components this presents the advantage of an additional source of tension in the heel pull .20 member owing to the sides of the cord being pressed outwards at an angle. I

Whereas for this hithertoonly hooks arranged one above the other or laterally one behin the other were known in which hooks the sides of the cord were hooked or unhooked, the invention provides, in addition to the front hooking point two lateral supporting bearings, one on each side, in which the sides of the cord are permanently gripped and which are themselves mounted on 3-" oscillatable arms, slides or the like so that the supporting points can be raised and lowered together with the sides of the pull element.

Thus, the adjustment can be effected both without loosening or detensioning the supporting :3 bearings and also without hooking or unhooking the heel pull element every time.

At the same time the supporting bearing points are so constructed that easy disengagement is possible forexample for removing the fastening 49 for removing the skis. This is effected after shifting the spiral sleeve on the wire cord. For this purpose the eye outlet of the supporting bearings is adapted to the thickness of the wire cord so that accidental unhooking is rendered impossible in tensioned stateand when the spiral sleeve is slipped over the wire cord.

The heel pull element proper is also of special construction in that it consists not of one but of several spiral parts of difierent thicknesses. The

50 spirals are closely wound and so dimensioned that the outer diameter of one spiral corresponds to the inner diameter of the next spiral connected thereto, so that one part can screw into the other for the purpose of adjusting the length. The

55 thickened end of wire cord can be inserted in tion the point at which the spring bears,

the wire cord Ill end pieces l3 are welded thereon the heel pull element, so that the fastening de- 45 PATENT OFFICE any desired manner, no separate. locking deviceor the like being necessary.

An embodiment of the invention is illustrated by way of example in the accompanying drawing, in which: ti Fig. 1 shows the fastening device in side elevaon,

Fig. 2 is a top plan view of Fig.1, Fig. 3 shows on larger scale and in side eleva- Fig. 4 is a front elevation of Fig. 3,

Fig. 5 shows the length adjusting point in elevation.

On' a ski I, fixation plates 2 with adjustable toe guide cheeks 3 are fixed in the usual manner by means of screws. Each cheek has a hinge pin 4 on which the end 5 of a hook strap 6 is hooked which is bent so that a folding hinge or joint is formed.

The pin 4 is preferably formed from the cheek itself by punching a slot I in each of the angular cheelsss said slot corresponding to the curved end A wire cord I0 covered by a wire spiral 9 is hooked on to a claw on the stretcher 8, which may evidently be also constructed as part of the heel pull element. a

- Spiral springs II with nut heads l2 fixed thereon are slipped on to the'ends of the wire cord said springs consisting of steel wire whose windings bear tightly the one against the other. After the springs have been slipped on to the ends of which enable the springs II to turn on the wire cords l0 without turning these cords. The rear portion of the heel pull element consists of a steel cord l5 protected by a spiral ll and whose thickened ends are soldered to the thick "pull springs IS with the ends of the spiral II. The

front windings ll of the thick pull springs I6 are reduced in size and its internal diameter corresponds to the outer diameter of the springs ll so thatpthese latter can be screwed more or less far into the windings II to shorten or lengthen vice itself is more or less tensioned.

The cord ill or its protecting spiral 9 rests in the curved upper end i8 of strap 6.

Accidental unhooking is not possible, because the mouth IQ of the curved end l8 only corresponds to the'thickness of cord ill. The hooking and unhooking is eflected by shifting the spiral 9 on the cord I0 until a portion of the cord i0 is exposed and can be slipped through the mouth I9 01 the curved end l8, whereupon the spiral end is shifted into position over the cord end and can again enter through the mouth ll of the curved end It.

If it is desired to change the pressing-on component to downward or horizontal pull the straps 6 are folded down out of the raised position or up out of the lowered position on the toe cheeks. Both positions are extreme positions. It is not necessary to unhook and re-hookthe heel pull from and into the straps 8 during the adjustment, nor to displace or shorten the pressingon towards the rear.

As already mentioned the stretchers may be arranged at the front or in the heel pull member. In the latter instance the front closed pull member can be omitted and the heel pull member provided with corresponding safety heads can be connected to the hook straps I or their curved ends I 8.

A leather strap may be used instead of a wire cord as pull element.

I claim:

1. A ski fastening device, comprising in combination toe guide cheeks on the ski, a heel pull element secured at the front to the ski, and eye bearings one gripping each side of said heel pull element, and associated with a toe guide cheek, each eye bearing including an arm and a pivot for the eye bearing extending longitudinally of the ski whereby the arm may he vertically ad justed relative to its associated toe guide check.

2. A ski fastening device comprising in combination, toe guide cheeks on the ski, a heel pull element secured at the front to the ski, and eye bearings, one gripping each side of said heel pull element and each constructed as an arm vertically adjustable on one of said toe guide cheeks, a spiral sleeve slipped on to the pull element, said pull element consisting of a wire cord, and each eye bearing having an outlet correspending in width to the wire cord diameter and an internal diameter corresponding to the outer diameter of said spiral sleeve.

3. A ski fastening device, comprising in combination, toe guide cheeks on the ski, a heel pull element secured at the front to the ski, and eye bearings, one gripping each side of said heel pull element, and each constructed as an arm vertically adjustable on one of said toe guide cheeks, said pull element comprising a spiral sleeve and a wire cord and being discontinuous to form front and rear ends, pull springs soldered on the rear ends of said pull elements, spiral springs on the front ends of said pull element, and windings of reduced size on the ends of said pull spring and having an internal diameter corresponding to the external diameter of said spiral springs and forming therewith a screw connection for shortening and lengthening said pull element.

4. In a ski fastening device, a heel pull element, a stretcher on said heel pull element, vertically adjustable arms consisting of flaps vertically foldable on pivot axes extending longitudinally of the ski, and curved ends on said flaps for securely holding said heel pull element.

PAUL PFEIFFER.

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