US2362380A

US2362380A - Ski

Info

Publication number: US2362380A
Application number: US481826A
Authority: US
Inventors: Kallstrom Anders Gustav; Kjellstrom Alvar Eskil Petrus
Original assignee: Individual
Current assignee: Individual
Priority date: 1942-05-02
Filing date: 1943-04-05
Publication date: 1944-11-07
Anticipated expiration: 1961-11-07
Also published as: CH233402A

Description

Nov. 7, 1944.

A. G. KALLs'rRM Erm.

SKI

Filed April 5, 1943 2 Sheets-Sheet 1 Jhveniolzs. ANDER GusrAv KALLSTAOM. ALvnR nsKn. Pemvs K Patented Nov. 7, 1944 y ,2,362,380 UMTED` STATI-:s PATENT 'o1-fluor. y

.SKI

T y Anders Gustav Kllstrm, 'skarshamn, v(and Alvar Eskil Sweden Petrus Kjellstrm, Stockholm,y

Application pril 5, 1943, Serial No. 481,826 `In Sweden May 2, 1942 11 claims. j (o1.` 28o-11.13)

The present invention relates toan improved ski of wood. TheA object of the invention is to produce a light ski and to reduce considerably the quantity of the special, selected skiwood that is available now only with difficulty. y y l A' Ihe invention is essentially characterized by the feature that the ski comprisesv a ski body consisting of at least one layer of wood, a stiiening member consisting of at least one layer of Wood which member is bent to alchannel-shaped cross-sectional form and glued to the upper side of the ski body, a plane foot-plate of wood glued to the upper side of or formedby a portion v member 9 has a channel-shaped cross-section and extends along nearly 2/3 of the length of the ski. `At the-place where the foot-plate is to ber xed, a filling-piece I0 is suitably provided between the stiiTening-rnember 9 and the layei` 8. This filling piece I0 is somewhatshorter "than the foot plate II, which'` is flaton its upper side and has a rectangular cross-section.

Its underside is formed in such a way that it coincides exactly Withthe form of the channelshaped'stiiening member 9, to whichit is directly glued. In order to resist arising strains several 'transverse/intermediate walls I2 are suitably inserted in the stiffening member as shown on the drawings.

, The ski according toFigS. 12-16 differs from the above described embodiment by'thefeature IIL-III, IV-IV, V-,V, and VI--VI respectively in Fig. 1.

' Fig. 7` is a plan'view of a second embodiment of the ski. Fig..8 is a longitudinal sectional elevation of the same' ski. p

. Figs. 9e11 are sections along the lines IX-IX, X-X, and XSL-XI respectively in Fig. 8.

Figs. 12 and 13 show a plan View and ailongitudinalsectional velevation respectively of a third embodiment of the ski.-

Figs. 14-16 are sections along the lines .XIV-EGV, XV-XV, and XVI--XVI respectively in Fig. 13.

In Figs. 1-6, I is the vstiftening member, which is glued to the ski body 2, which may be provid-` ed in the known way with a guiding-groove-3. Atv the place for the foot-plate of the ski, the stiffening member may be plain in rits whole width, as shown on the drawings, so that the stiiening member forms the foot-plate atsaid place.

The channel-shaped cavity4 formed between the ski body 2 and the stiffening member I is filled by a lling-piece 5 beneath 'the foot-plate. As shown in Figs. 2-6, the stiifening member I is formed in such a way that the depth of the channel space decreases in the direction towards that the stiflening member "9 .consisting of Aseveral layers extends along a greater portion of the length of the ski. Also the fastening of the stiffening member 9 is a little different. As shown in' Figs. `ll-lfthe upper vlayer 8 is provided on its longitudinal side-edges with a groove or recess I3, which in the middle portion of the ski passes through the whole layer 8, the surface of the longitudinalside ends'of the lstiftening member 9 lying there ush with the longitudinal side edges of the ski, as Figs. 14 and 15 illustrate. However, this groove I3 decreases in the direction towards the ends of the ski and terminates 'somewhat before the rear and fore ends of the stiffeningl member. By meanszof this arrangement a considerably better glueconnectionbetween the stiening member` and theski body is attained, as will be seen from Figs. 14 and i5. In this embodiment the lling piece I0 is longer so that it extends below the whole foot plate II and further strengthens the ski.

Otherwise the ski vaccording to thisvembodiment is formed in the vsame way as the skiraccording to Figs. 7-11, 'and the' same references are used for the same parts of the ski.

The described embodiments are only chosen as examples and it is understood that the present invention may be` modified in'many ways v without departing from the principalidea of the invention.

Thus, for` instance, thesupporting intermediate walls I2 may be'replaced by ribs'glued to the inner side of the stiffening member and, ifde sired, also to the layer 8, T y

Having now particularly described the nature of our invention and the manner of its operation what we claim is: l

l. A ski, comprising a vski body consisting of at least one layer of wood,`a`stifeningmember consisting of at least one layer of wood, said stiiening member ybeing bent to a channel-shaped cross-sectional form and being glued to the upper side` of said ski body, aplanefoot-plate of wood, said foot-plate being formed by a portion of said stiiening member, and.. a.. ,wooden strengtheningpiece, said strengthening, piece being inserted into the space between said stii'ening member and said ski beneath said foot-plate.

2. A ski,.comprising a ski body consisting of several layers of wood glued together, a stiftening member consisting of several layers oi wood glued together, said stiieningi,member beingbent to a channel-shaped cross-sectional form and being glued to the upper side of said ski body, a plane foot-plate of wood, said'foot-platev` being formed by a portion of said stiiening member,

and a wooden strengthening piece, said-strengthening piece being inserted into the space between said-'stiffening member and'saidfskibody beneath said foot'ep'late.

3; yA ski; comprisingfaski body consisting. of at leastl onelayeroffwoo'd, a stiifening member consistingof: at least one layer' of. wood, said stiiening member. being bent' to a. channel-shaped crossese'ctional formandbeingglued to the upper side of saidskibody, aV planefoot-plate of Wood',xsaid foot-plate'. being gluedto the upper si'def. oi" saidi stiifening: memberg, andV a` wooden strengthening'piece, said strengthening piece beinginserted'into the space between said stiifeningzm'emberandisaid ski body beneath'said footplat'e'..

4.*A ski, comprising a ski body consisting of several layers of wood glued together, a stiiening. member consistingrof several layers of wood glued?` together, saidstiffening member. being bent to af channelshaped cross-sectional form and beingwgluedto.theupper.side of said ski body, a

planefooteplate of "wood, said foot-plate being glued=to therupperA side of said stiiening mem-l ber;A and,` a'` wooden strengthening piece, said strengtheningrpiece'being'inserted into the space betweeni said stiiening member and said ski bo'dy'beneath said foot-plate,

5: A ski, comprising a ski bodyconsisting of at 4leastf one layer of wood, a stiiening member conleasty onelayer, of wood, a stiffening member consisting of at least one layer of wood, saidstiffening member being` bent to a channeleshaped cross-sectional form and being glued to the upper side of said ski body, a plane foot-plate of wood, said'foot-plate. being glued to the upper side of said,v stiffening` member, a wooden strengthening piece, said strengthening piece being inserted into the space between said stiiening member and said ski. body beneath said foot-plate, and supporting intermediate Wooden members, said members being arranged inthe transverse directioniof the skir andxedbetween said stiiening member and. said skibody- '7, A. ski, comprising aV skiY body consisting of atA least one layer of Wood, astiifening member consisting of at least one layer of` wood, said stiffening member being bent to a channel-shaped crossfsectionallform andbeing, glued tor the uppersidegof' said-ski bodyg; recesses formed along the longitudinal edges of said ski body, said stiffening member fitting in said recesses, a plane foot-plate of wood, said foot-plate being formed by a portion of said stiffening member, and a lwooden strengthening piece, said strengthening piecevbeingrinsertedinto the space between said stifenin'g memberand said ski body beneath said foot-plate. x

8;' A- ski, comprising a ski body consisting of at least one layer of wood, a stiiiening member consistingiof at least one layer of wood, said stiffening member being bent to a channel-shaped cross-sectional form andfbeing'glue'd tothe upperside' of saidfski body; recesses formed along the longitudinal edgesof.' saidskibody, said stiff'- ening member fitting' inY said'. recesses, aplane foot-plate of wood, said foot-plate being glued to the upper side ofi'y saidfstienin'g member; and a wooden strengthening piece', saidfstrengthening piece beinginsertedy into the space between' said stifiening member. and said:v ski body beneath saidIfoot-plate.

9: A ski, comprising' af ski bodyconsisting' of at least one layer of wood, a stiieningmember consisting. of several layers of; Wood glued' together, said stiifenin'g member being' bent'.r to a channel-shaped'` cross-sectional forml and being gluedt'o the upper: sidezof saidski-body,. recesses formed along the longitudinal edges of saidsk'i body', for' receiving theI longitudinal' side: ends of said; stif'ening member, the surfaces of saidflon'- gitudinal side ends lying ush with the-.longitudinal sideiedgeszofsaidski atleastink the middle part thereof, al plane foot-plateof woodg. said foot-plate beingv formed by a portion ofv saidstifE- eningmem'ber, and 'a Woodenstrengthening` piece, said strengthening piece being insertedinto` the space between'. said stiilenin'g member and' said ski body beneathl said footeplate.

10. A ski, comprising a skiibodyconsisting of at least one layer'of wood; a' stiffening member consisting of several layers `of.- wood?` glued t gether, said' stiffening member being bent to a channeleshaped* cross-sectional form and being glued to the upper side of. said ski'. body, recesses formed along' the'longitudinal edges ofsaid' ski body, said stifieni'ng. member fittingA in said recesses, a plane foot-plate of wood, said foot-plate being glued tothefupper side of said stiifening member, anda' wooden strengthening piece, said strengthening piece' being inserted linto the space between said stiiening memberandfsaid ski body beneath. said foot-plate, said recesses decreasing in depth from. thefsit'e of. saidffo'ot-plate` towards the. fore andlrearIen'ds of said'stiifeningI member and terminating therebefore. t v

11;. A ski, comprising a ski.L body: consisting. of at least onelayer of wood; a stiifening member consistingV of; at.Y least one layer of*I wood, a plane foot-plate, said stiiening member-beingbent-t'o a channelr-shaped crossesectional 4form before and* behind. said' foot'plate,.said footfplate, being formedby aplan'e portion' of; said'stifiening: piece between said channel-shaped` portions. ofsaid vstiifening member, andl a wooden strengthening piece, saidlstrengthening' piece-being inserted into the spacebetween saidA plane portion: of said stiiening member andsaidskibody beneath said footeplate.

ANDERS GUsfrAu KLLSTRM. ALVAR EsKiL. PETRUS..y KJELLs'rac'lvr-