US1314159A - Jakob steiorer - Google Patents

Description

J. STEIGER.

ROLLER SKATE.

APPLICATION FILED JUNE 25.19:!1.

1 ,3 14,1 59.. Patented Aug. 26, 1919.

flame/23%)? J'AKOB STEIGER, OF EBNAT-KAIPPEL, SWITZERLAND.

ROLLER-SKATE.

Specification of Letters Patent. Patented Aug; 26, 1919.

Application filed June 25, 1918. Serial No. 241,885.

To all whom it may concern:

Be it known that I, JAKOB Srnrenn, a citizen of the Republic of Switzerland, residing at Ebnat-Kappel, Switzerland, have invented certain new and useful Improvements in Roller-Skates; and Ido hereby declare the following to be a clear, full, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accom anying drawing, and to letters or figures o reference marked thereon, which form a part of this specification.

This invention relates to improvements in roller skates provided with two wheels only, arranged one in front of the other and havinga pivotally mounted front guide wheel I ,for instance, in all roller skates provided with a guide wheel adapted to be swiveled or rotated about a vertical axis.

I am aware, that it has already been proposed to provide on roller skates an adjustable front guide wheel adapted to be rotated about a vertical axis in order to enable skaters to curve about. 'Said axis lies, however, behind the axis of the front guide wheel, so that a skate of such design can not be used because the slewingor rotation axis of the guide roller or wheel cuts the line on which the skate is running behind the point of contact of the guide roller with the running surface. In consequence of this, the guide wheel is turned in the wrong direction when describing curves, so that the running wheel has the tendency to deviate the skate from the curve to be described and to force it to move along a line curved in tho opposite direction.

The object of the present invention is now, ,to provide a roller skate provided withonly two wheels or' rollers, the front one of which is mounted on an inclined slewing or rotation axis, in which an accommodation or adjustment of the roller skateto the curve to be described is possible without the description of the curve being rendered, in consequence of such an ad ustment, more insecure. According to this invention, the single front wheel is arranged in sucha manner with regard to the slewing or rotation axis inclined from the tip of the skate backward that the point of contact ofsaid front guide wheel with the running surface lies behind the point at which the rotation ax s cuts the line to be described, so that the gulde wheel remains, notwithstanding the in clination taken up by the skate when turning 1n curves, nearlyvertical to the line to be described and isconsequently forced. to follow the line to be described. Owing to the fact, that the guide wheel remains approximately vertical to the line to be described,

any sliding of the guide roller out of the curve to be described is prevented.

For the purpose of causing the front guide roller to take up a vertical position before the skate is put on the surface on which the skate will then run, I may fix a weight. to the slewing or rotation axis causing the guide roller to adjust itself to the line to be described also in that case in which the skate, while taking up a laterally inclined,

position, is moved toward the line to be dewill be always in a vertical position when it comes in contact with the running surface, so that it does not matter which position is taken up1 by the skate when it comes in contact wit said surface.

The invention will now be more particularly described with reference to the ac- '2 indicate the plate of the skate on which the foot comes to rest; said plate is provided with means for fastening the skate to the shoe- Near the rear end of the skate a running wheel 3 having a rounded off running scribed. Because of this, the guide roller surface is'supported in a leg 4 fixed to the plate 1, 2. To the front end of the plate 1', 2 is secured by means of screws 5 provided near the front edge of the plate 1, 2 a plate 6 forming a part of a bearing 7, V In the latter is revolubly mounted by means of a pivot 8 a fork 9. The fork 9 is provided with slots 10 which act as bearings for the 7 front guide wheel 11. The running surface of rotation-V of the guide wheel 11 is kept in determinate position with regard to the fork 9', Thelatter is of such a shape that the P of contact A, of the roller. 11 with the surface on which the skate is running," lies behind the point B at which the prolongation of the axis fof 'rot'ati'on of the fork 9 cuts the line to be described, said axis beingapproximately tangent to "the periphery of the roller 11. Owing to this more backward'errangement of the guide wheel 11, an

automatic steering of sai d 'wheel 11 is 'at V tained in the manner already referred to tion of the plateG'may'be'adapted, however, to the requirements ofthe skater. To this skater by adjusting the nut 14; Inthe em-' bodiment of the invention illustrated inf Fig. 4, the spring 15 is replaced by a'weight" 20carried by an arm 21; The latter is fixed when turning curves.' I

A spring 15 fixed at one endto an earferk 9 has the tendency to move the latter always into its middle'position. The incli- V nation of the plate 6 is such, that the axis of the fork ,9 is inclined at an angle of about 45 to the li'netobedes'c'ribed. The inclinaend, screws 18 are screwed into the pl'ate 6,

said screws bearing against the' bottom surface of'thepart 1 of the plate 1, 2; Said part 1 is also-provided with holes'through which pass screws 19 screwed into "the plate '6. A tightening of the screws IQhas the efiect to secure the plate 6 relatively to the plate 1,2 in a determinate position. fUpon "inclined from the plate of the skate and {approximately tangent to the periphery of a loosening'of one set of screws (1801' 1 9) and upon a tightening of the other set (19"or '18), the inclination of the plate 6 may be adapted to the requirements of the to an extension 22 of the pivot 8. The object of this construction is to cause the guide wheel 11 to take up a vertical position when 1t comes in contact with the: running surshoe plate and adapted to-rotateabouty an axis inclined from the tip of the skate backward, the front roller being arranged in such a manner with regard to said' axis that 'face, and this even in the case that the skate its point of contact with the runn'ing sur- I face lies behind-the point at which said'ro tation axis cuts theline to be described.

2. In a roller skate, a footplate, two rollers arranged in front of one another, a member secured to the rear portion of said plate "and acting as bearing {for the rear roller, a n1emb,er carrying "the front roller having its bearing in the front portion of said plate and adapted to rotate about an axis inclined from the tip of the skate backwardfihe front 'roller being arranged in sucha manneewith regard vto said 'axi'stha t its point o'fcontact' with the running surface lies behind the point at which said rotation axis eutsthe position before the skateis put on the run- *lineto be described, and aweightjsecured to the pivot of said member adapted to roflike projection 16 of the plate 1,2 and at the'othe'r end to a'hook 17 provided on the ning surfaceand this even in the case that T the skate moved toward the running surface Y takes up an inclined position; 1

3. In a roller skate, a single'front'roller mounted to swivel on an axis inclined to the plate of the skate and means to adjust-the- ;inclination of the axis. 5

. 4-. In a rollerskate, a'single-front toner mounted to "swivel on 'an' axis inclined to the plate of the skate, means-to adjust thein c'lination of the; axis "and means to adjust said roller to and from said axis.

5.111 a roller skate, a Sliigle front ant.

mounted toswivel onan axis rearwardly said roller. v I

6. In a roller skate, a single front. roller mounted to swivel on an axis inclined rearwardly approximately'45 said axis intersecting the skating surface at "a point in 'secting the skating surface at a point in front of the point where the rollertouches said surface, means to alter the inclination when not under load, said means being subof said axis and means to adjust the roller stantially inactive when said roller contacts to vary the distance between said points. With the rolling surface. 10 8. In a roller skate, a single front roller In testimony that I claim the foregoing 5 mounted to swivel on an axis inclined to the as my invention, I have signed my name.

plate of the skate, and means sufficient to hold said roller in longitudinal position J AKOB STEIGER.

Copies of this patent may be obtained tor five cents each, by addressing the "Commissioner of Patents, Washington, D. 0.

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