US2547796A - Roller skate - Google Patents

Description

April 3, 1951 c. E. swENssoN 2,5473

ROLLER SKATE Filed Sept. 6, 1946 2 Sheets-Sheet l 75, @Q75 AY/51a? Svensson BY ,4Z 4M, M

Patented Apr. 3, 1951 UNITED STATES PATENT OFFICE ROLLER SKATE Carl Einar swe'nsson, Buffalo, N.A Y. Application September 6, 1946, Seria! No., 695,118Y

(-Cl. Z130-11.2.8)

1.3 claims.

This invention relates .to roller skates, and. particularly to those used by exhibition and gure skaters- Sueh skates should be. es light in Weight as possible, consistent with. rigidity and strength, but the trucks thereof Should be tiltahle laterally of the skate as Well as forwardly and rearwardly.

An oloieot of the invention is to provide on improved skate which may be successfully Worn by exhibition, dance and ,ngure skaters; with which maximum lfreedom in and ease of skating S Possible; With which the skaters may easily execute all desire-d skating movement ease and safety; which will be light .in Weight and well balanced; which will have adequate strength to resist the stresses imparted to skates in ell skating operations; with which the rocking angle of the trucks may be selectively varied.; with which any selected rocking angle may be .mailitained as the compression on the cushions is varied; With which danger o f interference between the roller Wheels on different feet is reduced to a minimum; with which the Wheels on each shaft may be relatively close so as to `extend .a minimum distance sidewise from the shoes; with which the trucks will be reslillltly urged into normal positions when released vafter being turned; and which will be simple rand A,nexpensive in construction.

Another object of the invention is to provide an improved and simple mounting of the wheels on the aXle; with which the rolling Wheels vI nay be replaced easily Iwhen worn; and AWith which bearing looseness lmay be reduced to a minimum.

Other objects and advantages will be apparent from the following description of some embodiments of the invention, and the novel ,features will be particularly pointed out hereinafter connection with the appended claims.

In the accompanying drawing:

Fig. 1 is a longitudinal, ,sectional elevation `of a skate constructed in accordance With this invention;

Fig. 2 is a bottom planof the same;

Fig. 3 is a transverse, sectional elevation of the same, the section being taken approximately along the line 3-3 of Fig..2;

Fig. 4 is a sectional elevation .similar to that of Fig. 3 but illustrating a modified construction;

Fig. 5 is a sectional plan, :similar to aisection taken approximately along the line ,5-.7- 5 of Fig. :3 but illustrating .a modication thereof;

Fig. 6 `is a bottom, sectional `plani,cor-r@Spinni-V ine t0 one teken approximately alone zthe ine 6-.16 of iFig. -3 but looking iintlie .idllodtion Q f A:the

2 arrow .and representing the embodiment shown in Fig. 5,;

lille.. 7 is a longitudinal, `sectional elevation through a skate also constructed in accordance with this invention, and representing another embodiment thereof and Fig. 8 is a transverse, sectional elevation o f the same, the section vbeine taken approximately sione .the line .8i-.8 or" Fis,- '.1-

lri the embodiment of .the invention illustrated in Fies.- l .to 3 the .improved .Skate ,is Shown as attached to a shoe l, havinge sole 2 and aheel 3. T .e device includes a flat mei'lal sole plate 4 'Whlh provided vv ith apertures by which it niet. he riveted or Screwed or bolted to the bottoni oi the v,shoe any suitable manner. and thisplate 4 is .curved out-line to he `similar in Shape to that of the periphery of the ,sole and heel of the shoe, but ,s iiehtlysinaller. .osshown in .Figi 2. The opposite side edges 9i theplete 4, .in the portion which is beneath the arch of the shoeI hes its edge Portions flanged upwardly es et 5 so as to nt eeainst the bottom of the shoesole along the .arch end entirely to the heel. The vflanges .5 tnus Serve es eroh .support for the shoe end also stiien the plate tag;ainst .flexing the portion thereof intermediate the front and rear parts thereof.

A cast-ing 6 is secured,l such as by rivets l"l, to the bottom of the sole -plate 4 beneathvthe heel 3, and anothercasting 8 is ralso secured as 'by rivets 9 to the underface of theplate 4 in the portion 'sbeneath the ball of the foot. Theplate 4 vand castings .B and 8 may collectively be`considered as a member that is attached'toethe shoe sole. A'truck Adesignated Vgenerally at I0 is disposed `b.eneath the casting l. This truck l0 has a bodywitha transyerse .passage l-I in Which Iis disposed .axle .rod i2 .that extends sidewise in bilill ,diietloll 'beyond lihe -zt-Iuck body .and rotatably :mounts '3- The truck body is provided wither-torti. diy extending y.platform iii hav-.ineen aperture i.. oniiaoe toieoethereof, and .a screw -i .passes upwardly .through the aperture iiendis threaded et its upper end into a threaded-.passage I i Ltheoesting 61 The sorew Iii has ahead i8 1provided with e partially spherical underface i9, which nts in a corresponde ing concave seat in the aperture VI 5, `so Vas uto ,have something oie bell end socket Contact between the spneneerpart of tneheed `it ang ,the platfform at aperture |5. The aperture |L51Yhas`a larger diameter thans-the diameter of the shank of :screw |16, sothat the plate -Hl may rock on the V:head :of the screw Ato ya limited extent.

Disposed on the platform I6 is ashallow cup 20 which has a slight recess on its upper face that receives aresilient cushion 2|, such as of soft, elastic rubber. Thiscushion 2| has a passage from end face to end face through which the shank of screw I6 passes. An inverted butsimilar cup 22 is provided on the screw I6 and abutting the other or upper end of cushion 2 I, so that the ends of thecushion 2| will be received in thecups 2|] and 22. Alock nut 23 may be threaded on the screw I6 above thecup 22 and which, when tightened against thecasting 6, serves to prevent unintentional turning of the screw I6, thus holding it in adjusted positions. The truck also has a rearwardly extendingarm 24, and anotherscrew 25 is threaded upwardly through thearm 24. The upper end of thescrew 25 terminates in a ball-like head 26, andlock nuts 21 on thescrew 25 engage with opposite faces of thearm 24 to prevent unintentional rotation of thescrew 25 inarm 24. Thecasting 6 is provided in its underface, but in alignment with thehead 26, witha recess 28 having threaded side walls, and an invertedcup 29 is threaded into this recess 28 to selected extents.

Thecup 29 has its bottom wall uppermost, and the inside face of the closed end of the cup has a ball-like seat against which thehead 26 abuts, so as to provide a universal rocking contact between theball 26 and the closed end of thecup 21. The truck is thus supported on thecasting 6 by the screw I6 andcushion 2|, but has a rocking contact withscrew 25. The truck can rock and turn sidewise to a limited extent as permitted by the rocking of the head of the screw in the aperture I5 of the platform, and as permitted by thecushion 2|, during which thescrew 25 rocks in thecup 21. Aline 30 through the center of thehead 26 and the seat in the aperture I5 'indicates what may be called the rocking angle. This rocking angle is the angle or line about which the truck may rock as the skate is used, and may vary considerably to suit the individual tastes of the skater, but is preferably around 45 to 55 to the horizontal.

, A similar truck is provided beneath thecasting 8 but turned around so that the platform I4 extends toward the rear truck. It is to be understood that in the rear truck the platform I4 preferably extends forwardly toward the forward truck. The construction of the forward truck is similar to that for the rear truck, and the corresponding parts have corresponding reference characters.

A channel-shaped strip 3| is fitted over thecastings 6 and 8 and extends between them, with the open face of the channel towards theplate 4. Thischannel 3| extends along each casting '6 or 8 beyond thelock nut 23, and its forward end is turned upwardly and riveted to the sole plate by arivet 32. Its rear edge is similarly flanged upwardly and attached toplate 4. The bottom of the channel which abuts against thecastings 6 and 8 is apertured to clear the recesses 28, and also apertured to pass the screws I6. The sides ofchannel 3| abut the bottom face ofplate 4 and its side edges and end are flanged and riveted thereto to reinforce it. Thischannel 3| thus extends between thecastings 6 and 8 and provides for plate 4 a stiff reinforcement which gives maximum rigidity, with lightness in weight, for the base which is attached to the shoe sole, and because of engagement of 4 its side walls withplate 4, the channel resists transverse flexing of theplate 4.

By turning the screw I6 in each truck, the compression on thecushion 2| of that truck may be varied, and thus the resistance to turning and sidewise rocking of that truck may be varied. Whenever the screw I6 is shifted endwise in this manner, and for this purpose, one may also turn thescrew 25 in the same truck, and also turn thecup 29 in its recess, so that the position of the rocking fulcrum at the ball-head 26 may be shifted toward and from theplate 4 to approximately the same extent as the movement of the ball head I9 on the screw I6. Thus even though thecushion 2| is compressed or relaxed, the saine angle of rocking represented by theline 30 may be maintained, or it may be varied to a limited extent, as desired.

In Fig. 4 the construction is the same as that in Figs. 1 to 3 except that thecushion 2| of Figs. 1 to 3 is replaced by avolute spring 33 with its larger base downwardly and received on the platform I4. The dash lines in Fig. 4 illustrate possible rocking positions of the wheels and truck while the skate is in use, and since the smaller end of thespring 33 is uppermost, the wheels |3 can be positioned closer together beneath the sole and still give maximum rocking, relatively to the shoe, since the wheels can rock closer to the center` vertical axis of the truck when the smaller end of the cushion is uppermost. This makes it possible to have the wheels I3 close together and not extend as far from the sides of the shoe as has heretofore been required. This reduces the danger of one bumping the wheels on the inside Vof one skate against the corresponding inside wheels on the other skate.

In Figs. 5 and 6 the construction is similar to that shown in Figs. 1 to 3 except that thecushion 34 which corresponds to thecushion 2| of Figs. 1 to 3, is square or non-circular in transverse cross section, and received at its ends in correspondingly shaped, non-circular recesses in thecups 26 and 22. Thelower cup 20 is similarly shaped and received in a correspondingly shaped shallow recess in the platform I4. Theupper cup 22 has a laterally extendingarm 35 which extends toward thescrew 25 and has aslot 36 which straddles that screw, as shown in Fig. 6. This prevents rotation of thecup 22. Since theupper cup 22 is held against turning and it, in turn, prevents rotation of the upper end of the soft,elastic cushion 34, and the lower end of the cushion is also held against turning bycup 2|] and platform I4, it follows that the truck is free to twist and rock sidewise to a limited extent against the resistance of the elastic cushion. As soon as the truck is released, after it has been twisted, the tortional stresses in thecushion 34 will urge the truck back into its normal, straight forward position shown in the drawings.

In Figs. '1 and 8 another modification is illustrated in which thesole plate 38 is provided on a shoe from which the heel has been removed,

' and accordingly the side edges of theplate 38 are turned upwardly to formflanges 39 that t the arch of the sole 2 of the shoe from the ball of the foot to the rear of the heel space and around the rear of the heel space, thus replacing the heel and lightening the weight of the shoe. The side edges of theplate 38 forwardly of theilanges 39 are flanged downwardly as at 40 to provide side flanges that stiffen the forward end of theplate 38 against transverse flexing.

The construction is otherwise similar to that described in connection with Figs. 1 to 3, except that the screws it are disposed at an acute angle to thevertical, and the platform lil of each truck is also inclined and at an acute angle to thearm 25. Thescrews 25 remain vertical. Thechannel 3| is replaced by a tube il having its end pinched together, and the flat ends apertured to receive the screws Iii. The tube il thus provides a stiffening element connecting the forward andrearward castings 6 and 8, and which further resists lateral flexing of the sole plate 3B in the portion between the two trucks. Thesole plate 38 may be secured to the shoe by bolts, screws or rivets 42, see Fig. 8.

Thescrews 25, in all of the embodiments of the invention, may be provided with transverse slots i3 so that they may be turned for adjustment by inserting a screw driver in theslot 43 and turning it. Similarly the sole plate ll of Figs. 1 to 3` may have downwardly turned side flanges lill at the forward part the same as shown i forFigs. 7 and 8.

In Fig. 8 l have shown a particular mounting for the wheels i3 on the axle rod l2. The truck It! has a tubular body with a passage @il through which the axle l2 is forced. The axle l2 may have longitudinally extending,fluted ribs 45 which bite into the wall of the passage i4 as the axle rod is driven into the passage, and these flutes l5 serve to hold the axle l2 against rotation in passage Ml. Each wheel is formed of a body of suitable material having arecess 45 extending from its inside face and which slidingly receives, with a sliding fit, the outer ring or race of a ball-bearing 4.?. The inner ring or race of that bearing has a slide t with the projecting end of the axle l2, and the inner ring is confined against the end of the tubular part of the truck by anut 48 which is threaded on the end of the axle. The rear or inside, recessed face of each wheel I3 carries an annular plate i9 countersunk therein, but removable, and which overhangs the recess i6 slightly so as to abut against the inside end face of the outer ring of the bearing 4l.Studs 50 welded to plate t9 extend through passages in the wheel I3 and have nuts 5l thereon so as to clamp the wheel to theplate 49 and against the bearing lll. The nuts 5i of thev studs 5D are countersunk in the outer face of the wheel. Thus to remove any wheel for repair or replacement, one merely removes the nuts 5I in that wheel, which allows the wheel to be slid off from its bearing 4l, and a new wheel may then be replaced on the bearing and secured thereon by reapplying thenuts 5|. The wheelv provides a covering for thenut 48. Because of this the wheels present an attractive appearance and may be easily and quickly replaced, withY merely the use of a screw driver.

It will be noted, in all embodiments of the invention, that whenever the compression on thecushion 2l, 33, or 3d is varied, it changes the rocking angle, and if one desires to keep the same rocking angle, the screw andcup 29 must be also adjusted. One may vary the compression Aon the cushion, depending on personal choice, the `weight of the skater, the speed, the sharpness of turning, or on other factors.

It will be understood that various changes in the details, materials and arrangements of parts, 'which have been herein described and illustrated order to explain the nature of the invention, 'may be made by those skilled in the art within the in the appended claims.

I claim:

I. A roller skate comprising a sole plate, a pair ofv wheel hangers beneath and spaced apart along said plate, each hanger carrying an axle and having an apertured platform extending to one side of said axle, and an arm to the other side of the axle, a compression cushion disposed between said platform and said sole plate, a screw passing through an aperture in said platform and having a. threaded connection to said sole plate, theA outer end of said screw having a head bearing rockably against saidplatform, so as to clamp. said cushion between the platform and sole plate under pressure determined by the cornpression of said cushion, a rod extending transversely through said arm and adjustable lengthwise through said arm, the upper end of said rod carrying apartially spherical head, a seat for said head carried by said plate, whereby the pressure on said cushion may be varied while maintaining the samev rocking angle of the hanger, and roller wheels carried by said axles.

2'..4 The skate substantially as set forth in claim l in which said cushion element is a volute spring with its base lowermost and resting on said platform, whereby the roller wheels may be placed closely together and.V give maximum lateral rocking range.

3. A roller skate comprising a metal sole plate of uniform thickness for attachment to a shoe minus a heel but having an arch tting portion, said plate having its marginal portion turned upwardly along its rear edge to a height corresponding to that of the missing heel, and also turned upwardly along its side edges from said rear edge forwardly and along said arch fitting portion, but decreasing in height along the arch fitting portion, whereby when the plate is secured to the sole of a shoe, it provides the heel and supports the arch of the shoe so as to give lightness and a rigid support for the shoe, and roller elements secured tothe lower face of said plate.

4. A roller skate comprising a metal sole plate of uniform` thickness for attachment to a shoe minus a heel but having an arch fitting portion, said plate having its marginal portion turned upwardly along its rear edge to a heighth corresponding to that of the missing heel, and alsoY lightness and a rigid support for the shoe, and

roller elements secured to the lower face of said plate, the side marginal edges of said plate forwardly of the arch fitting portion being i'ianged downwardly to impart rigidity to the forward part of the plate.

5. A roller skate for attachment to a shoe having an arch portion and a sole, which comprises a metal sole plate of uniform thickness having an outline generally that of the sole of the shoe to which it isl to be attached, the side edges of said plate being flanged upwardly along the portion aligned with the arch portion of said shoe to which it is to be attached, and flanged downwardly forwardly of said arch portion of said shoe, and rolling elements secured to said plate in tandem arrangement forwardly and rearwardly.

6. A roller skate for attachment to the bottom of a shoe, comprising a sole plate of sheet metal, a pair of base castings secured to the underface of said plate in spaced relation lengthwise of the plate, a hanger mounting an axle disposed beneath each casting and having anapertured platform at one side of the axle and an arm at the opposite side, an elastic cushion disposed on the upper face of each platform, and having a longitudinally extending passage, a screw passing loosely and upwardly through the aperture in said platform, through said passage in said cushion, and threaded into the casting immediately above it, said screw having a head with a rockable bearing in said platform, a rod carried by each hanger arm extending upwardly therefrom towards the casting above it, and terminating at its upper end in a somewhat balllike head, said casting above it having a seat fitting said head and adjustable toward and from said head, and roller wheels carried by each of said axles.

7. A roller skate for attachment to the bottom of a shoe, comprising a sole plate of sheet metal, a pair of base castings secured to the underface of said plate in spaced relation lengthwise of the plate, a hanger mounting an axle disposed beneath each casting and having an apertured platform at one side of the axle and an arm at the opposite side, an elastic cushion disposed on the upper face of each platform, and having a longitudinally extending passage, a screw passing loosely and upwardly through the aperture in said platform, through said passage in said cushion, and threaded into the casting immediately above it, said screw having a head with a rockable bearing in said platform, a rod carried by each hanger arm extending upwardly therefrom towards the casting above it and terminating at its upper end in a somewhat balllike head, said casting above it having a seat fitting said head, and roller wheels carried by each of said axles, each of said rods being adjustable endwise of itself on said arm which carries it.

8. A roller skate for attachment to the bottom of a shoe, comprising a sole plate of sheet metal, a pair of base castings secured to the underface of said plate in spaced relation lengthwise of the plate, a hanger mounting an axle disposed beneath each casting and having an apertured platform at one side of the axle and an arm at the opposite side, an elastic cushion disposed on the upper face of each platform, and having a longitudinally extending passage, a screw passing loosely and upwardly through the aperture in said platform, through said passage in said cushion, and threaded into the casting immediately above it, said screw having a head with a rockable bearing in said platform, a rod carried by each hanger arm extending upwardly therefrom towards the casting above it and terminating at its upper end in a somewhat balllike head, said casting above it having a seat tting said head and adjustable toward and from said head, roller wheels carried by each of said axles, and a tubular brace extending between said castings and secured thereto by said screws.

9. A roller skate for attachment to the bottom of a shoe, comprising a sole plate of sheet metal. a pair of base castings secured to the underface of said plate in spaced relation lengthwise of the plate, a hanger mounting an axle disposed beneath each casting and having an apertured platform at one side of the axle and an arm at the opposite side, an elastic cushion disposed on the upper face of each platform, and having a longitudinally extending passage, a screw passing loosely and upwardly through the aperture in said platform, through said passage in said cushion, and threaded into the casting immediately above it, said screw having a head with a rockable bearing in said platform, a rod carried by each hanger arm extending upwardly therefrom towards the casting above it, an abutment carried by each casting in approximate alignment with the adjacent rod, and adjustable towards and from the rod, said abutment and adjacent rod end having ball and socket contact to provide a limited rocking action, and roller wheels carried by each of said axles.

10. A roller skate for attachment to the bottom of a shoe, comprising a sole plate of sheet metal, a pair of base castings secured to the underface of said plate in spaced relation lengthwise of the plate, a hanger mounting an axle disposed beneath each casting and having an apertured platform at one side of the axle and an arm at the opposite side, an elastic cushion disposed on the upper face of each platform, and having a longitudinally extending passage, a screw passing loosely and upwardly through the aperture in said platform, through said passage in said cushion, and threaded into the casting immediately above it, said screw having a head with a rockable bearing in said platform, a rod carried by each hanger arm extending upwardly therefrom towards the casting above it, an abutment carried by each casting in approximate alignment with the adjacent rod, and adjustable towards and from the rod, said abutment and adjacent rod end having ball and socket contact to provide a limited rocking action, and roller Wheels carried by each of said axles, each of said rods being adjustable endwise of itself on said arm which carries it.

11. A roller skate for attachment to the bottom of a shoe, comprising a sole plate of sheet metal, a pair of base castings secured to the underface of said plate in spaced relation lengthwise of the plate, a hanger mounting an axle disposed beneath each casting and having an apertured platform at one side of the axle and an arm at the opposite side, an elastic cushion disposed on the upper face of each platform, and having a longitudinally extending passage, a screw passing loosely and upwardly through the aperture in said platform, through said passage in said cushion, and threaded into the casting immediately above it, said screw having a head with a rockable bearing in said platform, a rod carried by each hanger arm extending upwardly therefrom towards the casting above it, an abutment carried by each casting in approximate alignment with the adjacent rod, and adjustable towards and from the rod, said abutment and adjacent rod end having ball and socket contact to provide a limited rocking action, roller wheels carried by each of said axles, a channel shaped strip tted over said castings in straddling relation and having apertures through which said screws pass into said castings, so as to be clamped to the castings by said cushions.

12. The skate substantially as set forth in claim 9, in which each of said cushions has noncircular ends, one end secured against turning about its axis, on its platform, and the other against turning, about its axis, on its platform.

13. A roller skate comprising a member formed for attachment to a shoe sole, and a pair of trucks disposed beneath each plate in spaced relation to each other in a direction lengthwise of the plate, each truck including a body having i i '.9 axle extensions from each side, a roller wheel mounted on each extension, said body having an apertured. platform extending from one side thereof and an arm from the other side, ascrew passing loosely through an aperture in said platform, with its head rocking against said platform and threaded into said member, another screw threaded through said arm toward said member and having universal rocking bearing on said member, a cushion of soft, elastic material disposed between said platform and member, anchored to the platform against relative rotation thereon, an abutment element on said screw and non-rotatably secured to the opposite end of said cushion, and clamped against said member by tightening of said first screw, said element being nonrotatably anchored relatively to said member, whereby when either of said trucks is rotated beneath said member, the cushion will be given a torsional twist that will urge the truck back into initial position when it is released from its rotating forces.

i4. A roller skate comprising a member formed for attachment to a shoe sole, and a pair of trucks disposed beneath each plate in spaced relation to each other in a direction lengthwise of the plate, each truck including a body having axle extensions from each side, a roller wheel mounted on each extension, said body having an apertured platform extending from one side thereof and an arm from the other side, a screw passing loosely through an aperture in said pla"- form, with its head rocking against said platform, and threaded into said member, another screw threaded through said arm toward said member and having a universal Arocking bearing on rsaid member, the part of said member which contacts with said another screw being adjustable towards and from that screw in a direction endwise thereof, whereby the rocking seat on the end of said another screw may be shifted towards and away from said member by similar adjustments of said another screw in said arm and said part on said member, a cushion of soft, elastic material clamped under variable stress between said platform and said member by adjustment of said first mentioned screw into and out of said member.

15. A roller skate for attachment to the bottom of a shoe, comprising an element extending lengthwise of the shoe and attached to the face of the sole thereof, said element having a pair of base castings spaced apart lengthwise of the sole, a hanger mounting an axle disposed beneath each casting and having an apertured platform at one side of the axle and an arm at the opposite side, an elastic, tubular member disposed between each platform and the adjacent casting, a rod passing loosely and upwardly through the aperture in said platform, through the passage of said tubular member and coupled to the adjacent casting above it, said rod having means on its lower end engaging with the under face of said platform for limited universal movement of said rod in the aperture of the platform, and compressing the platform against said member and the latter against said casting above it, each said arm of a hanger having a vertical passage therethrough, a post extending upwardly through, and shiftable endwise along said arm passage, and terminating at its upper end in a somewhat balllike head, said casting above each post having a downwardly opening socket part adjustable generally vertically thereon, and said ball-like head rocking in the socket of said socket part, means shoe, and roller wheels carried by said axles.

' 16. A roller skate for attachmentto the bottom of a shoe, comprising a base element conned to the exposed face of the sole of a shoe,- a pair of hangers disposed in spaced tandem relation along and lengthwise of the under face of said base element, each hanger having a body `mounting an axle disposed crosswise of the length of the shoe and having an arm and an apertured platform extending in opposite directions from the axle, one forwardly and one rearwardly, an elastic, tubular member disposed between each platform and the base element, a rod passing loosely and upwardly through the aperture in said platform, through said elastic member, and couped to said base element, said rod having means on its lower end engaging with the under face of said platform for limited universal movement of the rod in the aperture of said platform, and compressing said platform `against said elastic member and confining the latter against the under face of said base element, each said arm of a hanger having a vertical passage therethrough, a post disposed in and relatively shiftable along said vertical arm passage, said post at its upper end and said base element having a universal rocking contact which is selectively shiftable vertically on the base element, means on said post and above and engaging with said arm to limit relative movement of said arm along said post toward said shoe, and roller wheels carried by said axles.

17. A roller skate for attachment to the bottom of a shoe, comprising a base element conned to the exposed face of the sole of a shoe, a pair of hangers disposed in spaced tandem relation along and lengthwise of the under face of said base element, each hanger having a body mounting an axle disposed crosswise of the length of the shoe and having an arm and an apertured platform extending in opposite directions from the axle, one forwardly and one rearwardly, an elastic, tubular member disposed between each platform and the base element, a rod passing loosely and upwardly through the aperture in said platform, through said elastic member, and

coupled to said base element, said rod havingl means on its lower end engaging with the under face of said platform for limited universal movement of the rod in the aperture of said platform, and compressing said platform against said elastic member and conning the latter against the under face of said base element, an upstanding post slidingly telescoping with said arm for generally vertical movement thereon, said base element having, on its lower face, a vertically adjustable part, said last named part and the upper end of said post having a universal rocking contact, enabling rocking of said post relative to said base element, means on said post and en-V gaging with the upper face of said arm to limit relative movement of said arm and post in a direction toward said base element, and roller wheels carried by said axles.

18. A roller skate for attachment to a shoe having a sole with an arch between its heel portion and its portion under the ball of the foot, which comprises a fiat body of sheet metal of approximately the length of the sole, having its opposite side edges flanged upwardly from the portion engaging with the ball of the foot rearwardly to its rear end, the free edges of the side flanges fitting the bottom face of the sole and following the 11 contour of the arch and the sole to the rear of the arch, to provide al light weight, rigid body on which the shoe may be supported, and rolling elements secured to the plate at its under face in tandem arrangement forwardly and rearwardly.

CARL EINAR SWENSSON.

REFERENCES CITED Number l2 UNITED STATES PATENTS Name Date Griffiths Nov. 3, 1885 -Ruel Jan. 17, 1899 Daverkosen et a1. Apr. 1, 1924 Winslow June 30, 1925 Davis June 12, 1928 Goldenberg July 2, 1940 Ware Feb. 25, 1941 Martinec Dec. 15, 1942

Images