US2472906A

US2472906A - Stretching device for the heel wire of ski ties

Info

Publication number: US2472906A
Application number: US726290A
Authority: US
Inventors: Kjellstrom Alvar Eskil Petrus
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-02-19
Filing date: 1947-02-04
Publication date: 1949-06-14
Anticipated expiration: 1966-06-14
Also published as: CH248514A

Description

June 14, 1949. A. E. P. KJELLSTRM y STRETCIIING DEVICE FOR THE HEEL WIRE OF SKI-TIES Filed Feb. 4, 1947 Patented June 14, 1949 OFFICE STRETCHING DEVICE FOR THE HEEL WIRE OF SKI TIES Alvar Eskil Petrus Kjellstrm, Stockholm, Sweden Application February 4, 1947, Serial No. 726,290 In Sweden February 19, 1946 2 Claims.

The present invention relates to a stretching device for the heel wire of ski-ties, which device is located in front of the toe supports of the skitie and consists of a stretching arm swingably journalled on an attachment plate, and of a fastening member` provided with at least one attachment member for the heel wire and so swingably connected to the stretching arm that the fastening member at swinging of the stretching arm downwards and forwards is displaced forwards, whereby a plate is swingably journalled on the stretching arm in front of the attachment member for the heel wire, which plate covers the attachment member in operative position.

In order to secure this latter plate in operative position it has already been proposed to provide the front end of said plate with a springing tongue or the like, which at swinging downwards of the plate over the attachment member for the heel wire snaps about an abutment provided at the rear end of the fastening member. This locking of the cover plate, however, has not proved to be satisfactory, especially when the tie is used at ski-jumps.

The object of the invention is to overcome this inconvenience. For this purpose, the plate covering the attachment member for the heel wire is, according to the invention, provided with an extension projecting beyond its journalling place on the fastening member, said extension being so formed that when the stretching arm is brought to its operative position, said extension will come into contact with the attachment plate and thereby forcibly hold the cover plate in the position covering the attachment member for the heel wire.

The invention will be further explained in connection with the description of an embodiment of the stretching device illustrated on the en closed drawing, in which:

Fig. 1 shows a side view of a portion of a ski provided with the stretching device according to the invention.

Fig. 2 is a longitudinal sectional elevation along the line II-II in Fig. 3 which is a plan view of a part of the ski and the stretching device.

On the drawing I designates the ski on which the toe supports 2 are attached. In front of these the device provided for the stretching of the heel wire 3 is mounted. Said device comprises an attachment plate 4 secured by .means of screws I6 to the ski, on which plate a stretching arm 5 is swingably mounted on pivots 8. A fastening member 6 for attachment of the heel wire 3 is, by means of a pivot 9 swingably connected to said stretching arm and is provided in a manner known per se with one or more grooves 1 open upwards, which enable a setting of the length of the heel wire 3. The pivot 9 for the fastening member 6 is so positioned that this member when the stretching arm 5 is swung downwards and forwards is displaced forwards. At the front end of the fastening member 5 a plate I0 is swingably journalled, preferably on the pivot 9, said plate covering, in operative position, the grooves i of the fastening member t.

This plate lo is provided with an extension Il projecting beyond the journalling place 9 on the fastening member said extension being provided at its front end with a tongue I2 directed downwards, which when the stretching arm 5 is swung downwards forcibly makes contact with an upwards directed abutment i3 provided at .the front end of the attachment plate 4, whereby the cover plate It in its turn forcibly will be held in the position covering the grooves i. The rear end of the plate lo may preferably be provided with a snapspring l5 in a manner known per se, which spring, when the plate it is swung downwards over the grooves l of the fastening member E grasps the rear end of said member.

Having now particularly described the nature of my invention and the manner of its operation, what I claim is:

1. Ski-tie having a heel wire and toe supports and provided with a stretching device for the heel wire located in front of said toe supports, and comprising an attachment plate, a stretching arm pivoted in said attachment plate, a fastening member provided with at least one attachment member for the heel wire and so pivoted in said stretching arm that said fastening member is displaced forward by swinging the stretching arm downwards and forwards, a cover plate pivoted in said stretching arm in front of the attachment member for the heel wire covering said attachment member in operative position, said cover plate being provided with an extension projecting beyond its journalling place on the stretching arm, said extension being so formed that when the stretching arm is brought to its operative position, said extension will come into contact with the attachment plate and thereby forcibly hold the cover plate in the position covering the attachment member for the heel wire.

2. Ski-tie as claimed in claim 1 and in which the front end of said extension of the cover plate is provided with a tongue directed downwards, said tongue cooperating with a corresponding abutment provided at the front end of said attachment plate when the stretching arm is in its UNITED STATES PATENTS operative position. Number Nam'e Date ALVAR ESKIL PETRUS KJELLSTRM. 2,276,252 Nashe et al. Mar. 10, 1942 5 2,381,793 Wallace Aug. '7, 1945 REFERENCES CITED FOREIGN PATENTS The following ,zxteferenlces are of .record .in the Number Country Date Germany ,July 2o, 1940 file of this patent: 693 857