Nov.v 5, 1946. E. E. WALLACE COMBINED WHEEL lV[0Ul“1'].‘IX“I('rv AND BRAKE THEREFOR 2,410,470 I Original Filed May 7, 1943 m3. ’ Patented Nov. 5, 1946 _ lTED ' STATES ; PAT‘ ‘1 2,410,470 *'coMB1NEn WHEEL MOUNTING AND BRAKE ' THEREFOR Edward E. Wallace, Cleveland Heights, Ohio , Original application May 7, 1943, Serial No. v‘ 485,979. Divided and this application August 17, 1944, Serial No. 549,935 .8 Claims. (01. 188-48) i" \ ' . annular bead 9 on the adjacent side wall of a This invention relates to a mounting for a i. wheel having incorporated therein a brake and The wheelv is, for illustrative purposes, shown mounted on an axle tire carcass ill. The innerside portions of the annular elements 4; 4a, and end walls of the . chamber 6 form seats for :annular keying ele which in turn is mounted on the outer end vof a supporting member for an airplane such as shown ' in my co-pending application ?led April 14, 1943, _ 8a to lock the carcass ID in position around the - operating means therefor. ments ll, Ila, which co-operate with the ribs wheel rim. As shown, the carcass l0 comprises a tread portion Illa, which may be provided with This application is a division of my co-pending ' suitable capping material (not shown), side walls application Serial No. 485,979, ?led May '7, 1943. 10 having the heads 9 and a central web [2 extend ing radially inwardly from the tread portion l?a One object of the invention is to provide an throughout its circumference. The inner pe improved mounting for a wheel having incorpo Serial No. 482,991. ,ripheral portion of the web 12 is enlarged laterally ‘ rated therein a brake and an ‘operating means on its‘ opposite sides throughout its circumference, Another object of the invention is to provide 15 as shown at l2], which enlargement ?ts‘into a , recess l3 formed by cut-aways in the opposed an improved mounting for a wheel consisting or inner ends of the keying-elements ll, Ila.v At of a bifurcated member, wherein is provided a spaced points throughout its circumference the brake for the wheel and its operating means. enlargement 12' is formed with a plurality “of Other objects of the invention will be apparent to those skilled in the art to which my invention 20 spaced transverse through. openings M each in registry with a through opening M’ formed in one relates from the following description taken in of the keying elements ll, Ha, whereby-counter connection with the accompanying drawing, therefor. , - U sunk screws l5'may be mountedin the opening l4 and I4,’ and threaded into threaded openings ' Fig. 1 is a, view, partly in elevation and partly in section, of a wheel, its mounting, brake and 25 14" formed in the other keying'element to secure these parts together with the enlargement I 2' operating means,_ embodying my invention. locked between them. Each keying element ll, Figs. 2 and 3 are sections on the lines 2'—2 wherein. . and il-—3,v respectively, of Fig. 1. ' ' ' Ila throughout its circumference is extended outwardly, as shown: at H’, over the side wall of In the drawing, I indicatesa wheelaxle sup ported at its opposite ends in the depending arms 30 the adjacent chamber 8, for engagement with the adjacent bead 9, whereby the keying element or bifurcations Ix of a support Ir’, which may consist of a retractile member as shown in. the aforesaid application Ser. No. 482,991, the axle ' and bead may form a suitable seat for the walls of an inner-‘tube it. ‘As shown, the web l2, keying elements H, Ila, beads 9 and carcass side walls‘ 35 and tread portion thereof formv cavities for the pins la (see Fig. 1). . inner tubes it, each of which may be in?ated or The axle I‘ is surrounded by'a sleeve 2 with de?ated through a, suitable valve in a nipple (not which parts of suitable anti-friction ‘bearing shown); By‘preference, each wall 8 is formed cages 3 and the inner bearing races 3a thereof throughout'its circumference with a plurality of (the bearings being preferably of the roller type) engage. The wheel rim consists of twoannular 40 openings 8’ each in registry with a through open ing [8 formed in the adjacent bead 9, so that elements 4, 4a, in side by side relation and con-' countersunk screws 19 extending through these nected together by a plurality of dowel pins 5 (two openings may be threaded into openings lBa only being shown). The walls of .the annular formed in the adjacent extensions II’ to secure elements, adjacent their outer portions are off-set radially to form annular chambers 6 to ac 45 the bead 9 between these parts. It will be understood that the construction of ' commodate the bearing cages 3, the outer bearing the tire forms no part'of the present invention races having engagement with the side walls of as it forms the subject-matter of my aforesaid the chambers. The side wall of each chamber 6 original application and that ‘the tire and its adjacent its outer end is (11) provided internally being ‘preferably ?xed to ‘the arms byssuitable with screw threads to take a ring nut T. which is 50 mounting may be of any desired form of con tightened against the adjacent cage 3 to secure it struction. ' , I » ' in the adjacent chamber 6, and ,(b) extended radially circumferentially. asshown at 8. to pro 20 indicates as an entirety a brake and its op erating means, the operating means beingroi' the vide an inwardly extending rib 8a, which laps hydraulic type, but electrically‘ controlled." 1 1 over and has interlocking engagement with the 65 By preference a brake mechanism is provided 2,410,470 3 4 at each side of the wheel, but as these mech anisms are similar in construction only one there of will be described. The walls of the chambers l are shaped to provide enlarged annular recesses 2| outwardly of the ring nuts 1 to accommodate the sets of annular braking elements, each of which sets consists of an inner bearing member recess adjacent the outer end thereof. The in ner wall of the, member 32 forms a guide for the outer end of an endwise movable pin 33. The inner end of the pin 33 is arranged to engage the wall of the recess 3| in the adjacent rod 23. The pin 33, adjacent its inner end is provided with a collar 33' which slidahly engages the walls of 23 suitably ~fixed to the walls of the adjacent re the recess to guide and support the inner end cess 2l, a plurality ofannular friction members thereof, and between the collar 33' and the mem 24, and an outer pressure member 25. The side 10 ber 32 is a coiled spring 34, which normally tends walls of the recess are splined as shown at 2la ' to move the pin inwardly, so that due to the in Fig. 2 and alternate friction members 24 are engagement ofrthe pin 33 with the wall of the provided on their outer peripheries with com recess 3| the spring pressure will be exerted on plementary splines ?tting the splines 2m to pre the annular member 32 and through it to the vent rotation thereof, whereas the inner periph 15 plunger 26 to move the latter outwardly. When ery of the pressure member 25 is provided with the thrust rod 28 is moved upwardly, the spring an inwardly extending collar 25a,'the inner wall 34 will yield to permit movement of the pin 33 of which is splined, as shown at 25a’ in Fig. 2 ‘ and the inner periphery of the other friction members 24, are provided with complementary splines ?tting the splines 25a’ to prevent rota tion thereof. 26, 26,,indlcates a pair of plungers slidably fit- , ting diametrically related throughopenings 260 outwardly. The upper end wall of the cylinder 30 is pro vided on the lower end of a casing 35. The cas ing 35 encloses thevalve, which controls the flow of the fluid under pressure to the cylinder 30 and its discharge therefrom, and the operating means for the valve. The external wall of the casing 35 formed in the adjacent arm is, each plunger 25 adjacent its upper end is provided with screw 7 being i‘provlded at itsinner'end with aiscrew threads which engage screw threads on the wall threaded extension which is threaded into the of the opening 30, whereby the casing is ?xed adjacent pressure member 25, whereby ‘movement therein and may be adjusted endwise ofthe open of the plungers inwardly will ‘exert pressure on ing to vary the stroke of the piston 23’. The valve the friction members 24 and movement thereof 30 consists of (a) a sleeve 36 ?tting the inner wall outwardly will relieve the pressure. The mount of the casing 35, the sleeve and casing being ing of the plungers 26 in the openings 26a pre formed with a plurality of alined ports for the vents rotation of the pressure member 25. flow of the ?uid to the cylinder at opposite sides The axle l and plungers 2B, 26, are formed with of the piston therein and (b) a reciprocatable ‘alined through‘ openings 21, 21', respectively, in 35 plunger 31 forming the valve element and having registry with an opening 21a extending through spaced annular recesses 38, 38', arranged to reg the adjacent arm Ir. 7 , ister with these parts for in-?ow and out-?ow of , A thrust rod 28 extends through’ these open the ?uid, in the following manner, the plunger lugs and is removably connected at its upper end - - being shown in its down position; to the lower end of a- piston rod 29 having at its 40 .39 is an inlet duct connected at its outer end ,upperend a piston 26' which is reciprocatable in with the ?uid supply and connected at its inner an enlarged opening 3|! (also formed in the arm end to alined inlet ports 40, 4ii',‘in registry with Ir). The walls of the opening 36 form the side the recess 38. ' walls of acylinder for the piston 23'. , Y The port 40' is connected to a duct 41 leading ,The inner side wall of the opening 21' ‘formed 45 to the upper end of the cylinder. 42 indicates a ‘in each plunger 26 is of convex shape to provide duct leading from the lower end of the cylinder a cam and the thrust rod ,28 is provided with and‘ connected to the alined outlet ports 43 which annular recesses 3| the walls of which endwise of are in registry with the recess 36'; The recess , the rod are concaved substantially complemen tary to the convex- walls of the. openings 21' to 50 38' is in registry with the alined outlet ports 43, 43', which are connected to a duct 44, the latter form cams which engage theconvex walls of the being connected to a suitable discharge pipe lead openings. 21’. When these parts are in normal ' ing to a suitable sump. Upon movement of the position, that is, pressure on the braking elements plunger 31 to its other or upper position; the inlet is relieved, the recesses 31 are in alinement with the plungers 26 (as shown in Fig. 1), but opera 55 ports 40, 40' are closed thereby and the recess 36 registers with alined outlet ports 46 formed in tion of the thrust rod upwardly, due tooperation the casing and sleeve, which ports at one side of the piston 23’, will effect a co-action between thereof are connected to a branch duct connect the walls of the recesses 3| and the convex walls ed to the duct 4i and at their other side are con view of the plungers 26 and move the latter inwardly, nected by a duct 46’ to the discharge pipe 44, whereby a braking action on the wheel will take place. 'It will be obvious that if the .piston 23' 60 whereas the outlet ports 43, 43’, are closed by the plunger and the recess 38' registers with alined is arranged to be at the upper end of its cylinderv inlet. Ports 41 formed in the casing and sleeve, when the ‘camming elements are in normal po sition, operation of the piston‘ 29' downwardly ,7, will eifect a braking operation. Means are ‘provided f r moving the plunger 26 I outwardly whenjthe t 1 .__,_t rod 28 moves into normal position, to insure relief of the braking elements or slippagefherebetween. These means are preferablyinountedfv in the plunger 26, the outer end portions of whichv are recessed to ac cE' odate the relieving means, each of'which comprise the following: 7 _ ~ which ports at one side thereof are connected with the inlet duct 39 and at their other side connected by a branch duct 48 with the duct 42. . Accordingly, in one position of the plunger, the inlet duct 33 for the ?uid is connected with the cylinder at one side of the piston 29’ and the cylinder at the opposite side of the piston is con 70 nected to the discharge pipe 44 and in the other position of the plunger these connections are re versed. '_ As shown in Fig. 1, the face of the upper and d32~indicates aif- annular member having screw wall of the cylinderand the lower face of the threaded engagement with theinner wall of the 75 piston 23' are relieved annularly to insure ?uid pressure against the piston when it is at either end of the cylinder and is to be moved toward its opposite end. - 6 end, of a wheel having an axle supported at its I opposite ends in the bifurcations of said- mem ber'and a hollow member surrounding said axle, one end of said hollow member being shaped to The operating means for the plunger 31 con sists of a double acting solenoid comprising form an annular chamber, and a brake compris spaced coils 49, 49' and a core 50 connected to ing a series of annular disks surrounding said the upper end of the plunger 31, the circuits for axle and mounted in said chamber for movement the coils 49, 49' being separately closed to ener axially of said axle, an annular pressure mem gize either coil to effect movement of the core ber mounted in the outer end of said chamber from one position to the other position to operate 10 and provided with an inwardly extending cir the plunger. It will be understood that the cir cumferential wall, alternate disks being splined cuits for the coils 49 or 49' are simultaneously to the side wall of said chamber and the remain closed by a suitable switch so that both plungers ing disks being splined to said wall, spaced 28 will be moved together in the same direction. plungers mounted in the bifurcation related to What I claim is: 15 said chamber for movement parallel to said axle 1. In a wheel, the combination with an axle and connected to said pressure member, cams for and an arm in which one end of said axle is operating said plungers in one direction and mounted, of a tired wheel mounted on said axle, means for operating said cams. said wheel including a rim for the tire, the end 6. In a wheel, the combination with an axle portion of said rim adjacentsaid arm being ofl_ 20 and a bifurcated member supporting the oppo-. ‘ set to form an annular chamber, braking ele site ends of said axle of a wheel having a rim ments mounted in said chamber, said arm being rotatably mounted on said axle, one outer end formed with an opening extending, radially of portion of said rim being enlarged to form an said axle, and means mounted in said opening annular chamber, braking elements consisting and operatively connected to said braking ele of a series of annular disks in side by side rela ments for operating the latter. tion in said chamber, a‘ collar in said chamber 2. A wheel as claimed in claim 1 wherein said surrounding said rim, alternate disks being braking elements consist of a series of annular splined to the side wall of said chamber and the disks, alternate disks being splined to the side other disks being splined to said collar, a plunger wall of said off-set, a pressure member having 30 mounted in the bifurcation adjacent said cham a collar within said chamber and to which the ber to move inwardly parallel to said axle to op f other disks are splined and diametrically related erate said disks into frictional engagement, a plungers disposed parallel to said axle and en thrust rod carried by said bifurcation and mo-v gaging said pressure member and arranged to be I able radially of said axle, means for reciprocat simultaneously operated by said operating means. ing said thrust rod, and co-acting elements be 3. In a wheel, the combination with an axle tween said thrust rod and said plunger arranged ' and an arm in which one end of said axle is to move the latter inwardly when said rod is mounted, of a tired wheel mounted on said axle, moved in one direction. said wheel including a rim for the tire, the end 7. A Wheel as claimed in claim 6 wherein said portion of said rim adjacent said arm being off 40 plunger is ?xed to said collar and a spring oper set to form an annular chamber, braking ele-‘ ments mounted in said chamber, and means .car ried by said arm for operating said braking ele said plunger for moving the latter outwardly to ments, said operating means consisting of a cyl the opposite direction. inder and a piston, a rod between said piston and the braking elements, means for supplying a, fluid under pressure to the opposite ends of said cyl inder, a valve for controlling the flow of the ated element is provided between said rod and release said disks upon movement of said rod in 8. In a wheel, the combination with an axle and a bifurcated member ?xedly supporting the opposite ends of said axle, of a wheel having a rim rotatably mounted on said axle, one end por ?uid to either end of the cylinder and its dise tion of said rim being enlarged to form an annu charge from the opposite end of the cylinder and 50 lar chamber, a collar in said chamber surround means for operating said valve. ing said rim, braking elements in said chamber 4. In a wheel, the combination with an axle consisting of a series of disks, alternate disks be and a bifurcated member supporting the oppo ing splined to the side wall of said chamber and site ends of said axle, a rim [around said axle, the other disks being splined to said collar, dia a tire’ mounted on said rim, one outer end por tion of said rim being enlarged to form an an 55 metrically related plungers disposed parallel to said axle in the bifurcation related to said cham ber, connected to said collar and movable in axle, a plurality of annular braking elements in wardly to operate said collar and effect frictional side by side relation in said chamber, and means engagement between said disks, said bifurcation , in the bifurcation adjacent said braking ele 60 being formed with an opening extending radially ments ‘for operating the latter, said operating of said‘ axle and said axle being formed with a means including a hydraulically operated ele through diametrically extending opening regis ment reciprocatable in said bifurcation and a tering with said radial opening, a thrust rod ex plurality of spaced devices slidably mounted in tending through said openings, means for re said bifurcation and arranged to be operated by 05 ciprocating said rod, and co-acting elements be said element to effect engagement‘of said brak tween said rod and said plungers for simultane~ ing elements one with another. ously operating the latter inwardly when said rod 5. In a wheel mounting, the combination with is moved in one direction. ‘ a supporting member having a bifurcated outer ' EDWARD E. WALLACE. nular chamber, bearings between said rim and .