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Aug. 2, 1938. c. E. KARST 2,125,504 SOUND PRODUCING ATTACHMENT FOR ROLLER SKATES ‘Filed Sept. 16, 1936 ’ \JVENTOR. ATTORNEYS. 2,125,504 Patented Aug. 2, 1938 YUNITED STATES PATENT OFFICE 2,125,504 SOUND PRODUCING ATTACHMENT FOR ROLLER SKATESv Clarence E. Karst, Cincinnati, Ohio, assignor to The Brunho?' Manufacturing Company, Cin cinnati, Ohio, a corporation of Ohio Application September 16, 1936, Serial No. 101,120 '7 Claims. (Cl. 116—61) This invention relates to roller skates. More particularly, the invention is directed to the com bination, with roller skates of sound producing tality selected, e_ g. bell, siren, or similar means. The volume of sound thereafter produced by the instrumentality is controlled largely by the speed of the skater. The drawing illustrates a preferred embodiment of the invention in which a bell is utilized It is an object of the present invention to pro vide the combination of a roller skate and a sim- 7 as a primary sounding instrument. This bell is struck during movement of a rotary striker oper ple, sturdy, sound producing apparatus.‘ Another object of the invention is to provide ated by and during actuation of a ground wheel journalled in a stationary tail or bracket piece, an alarm mechanism embodied in a roller skate with its tread out of ground contact, but movable of the conventional. type,,and controlled inopera into ground contact through alteration of the po tion by the skater, through foot movement, dur sition of the skate from normal position. ing movement of the skate. Referringto the drawing more particularly, the Still another object of the present invention is to provide a novelty apparatus which is universal skate is indicated generally at I. This skate, in respect. to attachment'to roller skates of the which may be of the usual design and construc conventional variety, by mechanical adjustments tion, comprises a foot plate 2, from which jour and operations, simple enough ‘to be understood nal brackets .3 extending downwardly to carry ax les 4—4 on which roller wheels 5 rotatively are and performed readily by children. Further objects and advantages will appear in mounted. Theaxles of the skates preferably are housed the following speci?cation, andrin the drawing in v _ instrumentalities operable by foot. movement of "5* n 91 a . . 20 the skates. I which: cording to the present invention. ' “5 2 0 Figure 2 is a side view similar to Figure 1, but and are provided with shoulders ‘I in the conven tional manner of construction. One of these axle shoulders 1 preferably is used as the abutment 25 showing the skate in the position for producing for mounting the sound producing equipment. sound. The rest of the elements of the skate proper fol low the usual lines of construction, and need not be described in detail for this reason. One form of sound producing apparatus con- 30 structed in accordance With the present inven tion for universal attachment to any of- the types of roller skates available at present is indicated generally at 8. The combination of the skate with this apparatus preferably is as follows: 35 A tail piece or bracket plate 9 is provided with Figure 3 is a rear view of the skate shown in Figure 1.. 30 0 within sleeves 6 engaging the journal brackets 3, ~ Figure 1 is a side view of a skate equipped ac 25 5 Figure 4 is a sectional view taken onv the line 4-4! of Figure l. ' Figure 5 is a sectional view taken on the line 5—5 of Figure 3. Figure 6 is .a perspective view showing the 35 sound producing attachment of the present in vention. _ Brie?y stated; the present invention. comprises the combination with a roller skate, of sound pro ducingapparatus having a ground wheel nor 40 many out of the range of the tread or ground level of the roller skate, but adapted to be actu ated by friction contact with the ground during canted-movement of the skate. Otherwise stated, the invention comprehends a roller skate having 45 a sound or noise producing equipment adapted to be-operated through a ground. wheel positioned for actuation b-y canting. of the skate from nor mal tread position. During the period of actuation of the ground 59 wheel the sound apparatus is driven or operated frictionally either to sound alarm, to signal or to satisfy the natural tendency of children to enjoy the noise or sound. The type of sound produced by the device, its ,tone quality and its volume are '55 determined initially by the type of instrumen a bore ID at one extremity for engagement over an axle 4 of the skate proper, intermediate the shoulder l and the wheel 5, of the axle on which the bracket is to be mounted. ‘The bracket plate is disposed over the axle was to abut the sleeve shoulder ‘I. The bracket plate at the locality ad jacent the bore in preferably is of reduced di mensions, to clear the extremities of the journal bracket 3. 45 A. plurality of clinch lugs or teats H are dis posed concentrically around the bore 10 prefer ably in slightly spaced relation. These teats are adapted to bite into the annulus at the shoulder ‘I when the tail piece engages the axle, to provide 50 positive locking of the tail piece in the intended position, as the nut I2, (which conventionally is used to hold the ‘wheel -5 in position on the axle) is tightened. These teats H preferably are positioned to pro- 55 . 2 2,125,504. vide biting surfaces extending conically toward the aperture 59, ?rst to facilitate centering of the tail piece over the axle, and onto the annulus of the shoulder, and secondly, to facilitate positive locking of the tail piece to sleeves or shoulders of different diameters. Thus, the series of conical teats shown in Figure 5, which concentrically sur round the aperture l?, in combination with cor- responding indentures which these teats form in 10 the shoulder annulus during tightening of the nut 12, provide a mounting which is positive, univera sal and self-centering in respect to sleeves of counter-turned shoulder annuli of varying di ameter. It is obvious that this mounting of the 15 bracket plate to a conventional skate is simple to perform, and requires the use of no more tools than are required to remove and replace the wheels of the skates themselves. Onthe other hand, however, other suitable means for attach 20 ing the sound equipment to the skate proper may be substituted for the means disclosed. Thus the sound equipment may extend fore or aft the skate in position suited to actuation of the apparatus by canting movement of the skate from normal 2.5 39 tread position. , the spur gear 23 mounted on shaft 65 on which the bell M is carried. A rotary type striker 24 is , mounted for rotation with the spur gear 23. During rotation of the striker hammer elements 25 centrifugally are thrown into contact with a 10 “ lug 26 extending inwardly from the bell Hi. When the skate of the present invention is in the normal tread position the ground wheel l8 clears the tread and the sounding device is in operative. At thewill of the skater the toe is 15 lifted by rocking movement on the back wheel of ‘the skate for actuation of the‘ground wheel, and soundis produced as long as the skate remains in this position. It should be understood, of course, that the sound equipment may be mounted at the 20 front of the skate rather than at the rear in which instance, the actuation of the device is con trolled by forward rather than rearward canting motion. 7 ’ Having described my invention, I claim: The tail piece 9 preferably is stiffened with a 1. The combination, with a roller skate, of a marginal flange l3, and a bell I4 is mounted bracket plate ?xedto the skate, a ground wheel within this ?ange in a position spaced from the Y journalled on the bracket plate with its tread out mounting bore ill for clearance purposes. The of ground contact and adapted to be grounded bell threadedly is carried on a stud i5 extending rigidly from the tail piece 9. The-tail piece 9 is mounted on the skate so that the bottom portion of the marginal ?ange l3 clears the ground dur ing normal skating movement. A bracket clip It extends from the tail piece 9 35 in spaced relation on the side of the tail piece opposite the bell, to carry a stud or jack shaft H on which a ground wheel l8 rotatively is mounted. The groundvwheel, which preferably is rubber 40 tired, as at lea, is journalled at the tail piece with its tread out of ground contact, but adapted to be grounded for traverse and actuation by altera tion of the position of the skate, in the manner shown in Figure 2. 45 ' drive.‘ A suitable wedging action is provided in the relationship of slot to stub shaft shown in Figure 1. The stub shaft 2!] extends through the tail piece 9 to carry spur gear 22 which meshes with ‘ The shaft ll over which the ground wheel I8 is mounted preferably is carried in slots l9—l9 in the clip support it and in the tail piece 9 in cor responding locations. A stub shaft 28, driving the sound equipment indicated generally at 2!, 50 is journalled for rotation in the bracket clip It and in the tail piece 9 for frictional engagement thereof vby the ground wheel during its period of movement. When the skate is canted, the shaft ll moves to the upper limiting extremity of slots 55 l9—! 9 to limit canting movement of the skate. Thus, in the arrangement which is shown, the ground wheel is brought into frictional contact with the tread of the skate Whenthe forward por— tion of the skate is tilted upwardly by foot move 60 ment of the skater. During this tilting movement the ground wheel ?rst comes into contact with the tread, then the play in the slots in which the shaft H is disposed is taken up, and the ground wheel then frictionally drives the stub shaft 2B 65 actuating the sound producer 2|. It is preferable to position the slots in the bracket clip and‘ tail piece angularly with respect to the longitudinal axis of the support clip it in which latter the stub shaft is disposed. This 70 angular position through which the axle If is movedcauses the ground Wheel 58 bindingly to engage the stub shaft 28 rather than at right angles. This arrangement reducesthe amount .of slippage of the stub shaft in respect to the ground 75 wheel and provides a much more positive friction 25 upon canting of the skate, and a sound producing 30 apparatus mounted on said bracket and having a shaft frictionally contacting the tread of the ground wheel for actuation thereby. 2. The combination, with a roller skate, of a bracket plate ?xed to an axle of the skate, a 35 ground wheel journalled on the bracket plate with its tread out'of ground contact but adapted to be grounded upon canting of the skate, and a sound producing apparatus mounted on said bracket plate and having a shaft frictionally 40 contacting the tread of the ground wheel for actuation thereby. ' 3. A soundproducing attachment mounted on a roller skate having an axle counterturned to provide a shouldervcomprising, a bracket plate 45 having a bore, a plurality of teats spaced con centrically around said bore to provide locked engagement of said plate with said axle of said roller skate, a ground wheel mounted for rota tion on said bracket plate with its tread extend 50 ing beyond the margin of the same, and a sound producing instrumentality carried by said bracket plate and having a driving shaftfrictionally en gaging the tread of said ground wheel. ' 4. _A sound producing attachment mounted on 55 a roller skate having an axle counterturned to provide a shoulder comprising, _a bracket plate having a bore, a plurality of teats spaced con centrically around said bore. to provide locked engagement of said plate with said axle of said 60 roller skate, a ground wheel mounted for rota tion on saidybracketplate with its tread extending beyond the margin of the same, and a sound pro ducing instrumentality mounted on said bracket plate opposite said ground wheel and having a 65 driving'shaft, journalled in said bracket plate, frictionally engaging the tread'of said ground wheel. I 5. A sound producing device for attachment to a roller skate for actuation by canting of said 70 skate from, normal tread position, said device comprising a bracket plate having a bore for en gagement with an axle of said skate, and having a stiffening flange, a groundwheel mounted for 2,125,504 rotation on said bracket plate with its tread ex tending beyond said ?ange for driving, and a sound producing instrumentality, mounted within said ?ange, and having a driving shaft friction ally engaging said ground wheel. 6. A sound producing attachment for a roller skate comprising, a bracket plate having a bore for engagement with an axle of said roller skate, a clip support extending from said bracket plate 10 in spaced relation therewith, a shaft carried in said plate and clip support, a ground w‘heel journalled on said shaft, and a sound producing instrumentality carried by said bracket plate 3 and having a driving shaft frictionally engaging the tread of said ground wheel. '7. The combination, with a roller skate having an axle counterturned to provide an abutment shoulder, of a bracket plate having a bore for engagement with said axle of said skate, a plural ity of teats spaced concentrically around said bore, and indented in said shoulder, a ground wheel journalled on said bracket plate and sound producing apparatus having a shaft frictionally 10 engaging the tread of said ground wheel, the sound producing apparatus carried by said bracket plate. CLARENCE E. KARST.