US1993636A - Ski - Google Patents

Description

March 5, 1935. B. uLLEvoLDsAE'rER 1,993,636

I SKI F'ledjlarch 1. 1954.

Patentes Mss s, 193s f l 1,993,636

UNITED STATES PATENT ori-*ICE SKI Bjorn Ullevoldsaeter, Seben, Norway, assignor to Peter Schou Ostbye, Lilievand, Voksankollen, near Oslo, Norway v Application March 1, 1934, Serial No. '113,575

En Norway January 18, 1933 3 Claims. (Cl. 208-184) It has formerly been proposed to produce a ski 3, is given a thickness which decreases towards of two or more layers of different material, which both of its ends in suchl a manner that the layers are glued together in order to make the ski as 1 and 3 may be interconnected a distance at each light as possible, retaining a hard running surend of the ski. i g face. However, it is found that skis produced in By tapering the central'layer 2 the ski-receives 5 this manner quickly lose their'bending or springa form which now is common to all skis, when iness at the same time as they, owing to the inthe layers are glued together by means of an agterior work in the material in the respective glutinant which is not soluble in water and when layers, easily become warped. simultaneously pressed against a forming block.. lo 'I'he present invention, which relates to an im- The layers are so interconnected that the ski 1o provement in skis produced of three superposed` retains the formed bending or springiness B, since layers, aims to remove the above named drawthe upper layer 3, owing to 'its length being backs and is mainly distinguished thereby that greater than that of the underlying layers, will the thickness of the intermediate or central layer hold or lock the last 'named layers in the bent jg decreases from the middle of the ski towards position. 15'- both 'of the ends thereof. As will be understood the ski according to the By this arrangement it is shown that the ski present invention may be manufactured in difdoes not become warped, and at the same time it ferent manners. Thus the upper and lower layers always retains its springiness vowing to the fact 1 and 3 may be made from a single-piece of mate- 20 that the upper layer serves as a locking member rial 4 which is split from one end in such a length 20 for the underlying layers in their original bent that a short vportion is 'jleft at the other end, position and acts as a spring so'as to always bring whereupon the central layer .2 is inserted and se said layers back into the original position. cured to the two halves during forming or bend- The invention is illustrated by way of example ing as above described. The central layer 2 may g5 in the accompanying drawing in which: be composed of two or more layers 2', 2" (Fig. 25

Figure 1 shows a ski seen from the side thereof, 4) which are connected to each other with the de- Figure 2 shows the three layers. from which sirerl longitudinal bending, and this ensures still the ski is produced, before the interconnection further the retention of the bending or springand bending of the same, iness of the ski.

Figure 3 shows a single piece of material con- I claim: 30 stituting the upper and lower layers of the ski, 1. Ski produced of three super-posed wooden and layers which are glued together, characterized in Figure 4 shows the central layer composed of a this that the thickness 0f the eentrl Wer denumber of pieces or layers. creases from the middle of the ski towards both 5 As shown in the drawing'the ski consists of ends thereof. t 85 three superposed layers 1, 2 and 3 of which the 2. Ski eeeerdine 15 Gleim 1. in which the eenlower layer or shoeing 1 is produced from a hard el leyer I8 .Shorter then the Upper and lower wood, the central layer 2 from a light wood andthe lBYerS S0 the# these ere directly connected t0 each upper layer 3 preferably from a hard wood corre- Other et 011e 0r beth ends 0f the ski.

u spondmsiothewood intneioweriayer 1. Accord- 3- Ski wwrdins w claim 1, in which the cen- 40 ing to the invention the middle or central layer 2, "el leyel' i8 eemped 0f a number 0f which in theembodiments illustrated is produced leyel. somewhatshortertbanthetwootherlayersiand BJRNUIl-l-'VQI-Dm

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