Патент USA US2133074код для вставки
oct. 11, ‘1938.’ - ' 1_. A. BIXBY' BRAKE CONSTRUCTION v “2,133,074 Oct. 1l,_1938.7 lA.. A. ‘Blxl-BY" ~ ' 24,133,074 BRAKE CONSTRUCTION Filed N_ov. 3.o,v 19:56- fà' .6. J , - 2 ’ 4 sheets-sheet 2 f / Oc1.11,193s. ‘ A ' LA. Bíxày - BRAKE coNsTRUQTIoN ' ‘ FiÍedNov. 30; 1936 2,133,074 `4 Sheets-Sheet 3 @a v I Oct. 1l, 1938. " ’ ` |__ A, B|XBY I 2,133,074 BRAKE CONSTRUCTION -' -Filed Nov. so, 195e '- 4 sheets-sheet 4 77 74! /02 ¿l0 ' .-/00 33 ' , .. L n /700 ' --97 /Ö Patented Óct. 1`1`, 1938 2,133,014 STAT ¿133.6% ' I' ' A miamiy CoNs'incarica''f> i Le@Clark` A. Bixby, Equipment „Kalamazoajivnqhi ’Company,. Buchanan, 'gssignorfió" Mich., a corporation of Michigan ' ' ' ' . ' . ï Application; November' 30,1936, sei-.iai No.. 113,318 » The present» invention relates generally to < Figure i5 isla view similar to Figure 2 and brakes for- automotive vehicles and the like, and V shows the anchoring means for the brake apply ' is particularly concerned with brakes of the‘ex * ing-mechanism on-the same side ofthe Vtransmis ternal contracting type arranged Von the pro sionas _inlFigureZ` but in a reversed position so ï5 peller shaft at the rear-0f the transmission(- as f-to permit the connection ofthe brake operat ` One of the principal objects ofthe present in ing-mechanismA ina Vlower position; » l vention is the provision of a brake mechanism of ‘Figure 6 Yis a-view illustrating -the disposition l thisY general type which is 'particularly adapted . of the'brake applying> mechanism and associated 5 to-be mounted in optionalv positionsso as'to ac parts at the -left side vof the transmission; commodate various kinds of brake’ operating ^ :Figureï'l isa corresponding view showing the` 10 arrangements. AHeretoforebrake means of this anchoring means for the brake'band kmounted character usually have embodied a brake Vdrum V at the right Aside of the transmission; and secured to the'V driven shaft of the transmission ` Figure 8 is a view similar to Figure 6 but illus Iand a `brake band of the external type anchored trating` the reversed position of the ‘brake apply ing‘meansïas compared with its position as shown 15 15 against'rotation and contracted about-the brake . drum by suitable mechanism disposed at one side in‘Figure of the transmission, atY the rear of which the v » 6. ' - Y ' - VReferring `now-to the drawings, particularly i brake is disposed. It is `sometimes- desirable >to Figures 1, 2 and Zi,Y reference numeral' I indicates have the brake applying mechanism arranged at Y an automotive `Yselective 5 gear transmission of 2Q one side of the transmission, and at other times ` more or less conventional construction, embody itis desirable to have the brake applyinglmech ing a housing 2 and: suitable gearing therein (not anism at the other side `*of thel transmission, in shown), which servesfto transmit the drive to a order to accommodate different kinds of oper driven» shaft- 3-. ¿ The rear end of the shaft rv3 ating mechanisms for thebrake applying means, is splined, asïfindicatedat 4 (Figure2) and re and particularly are these different types of oper ceives a `collar 5 which serves as a support for ating mechanisms encountered ’ Vin providing aflanged brake drum 6. Preferably, though not transmissions for Ytrucks of the cab-oVer-engine necessarilyfthe universal joint by which the type. The principal feature of the present in power is transmitted tothe propeller shaft of a vention is, therefore, the provisionV of ¿a brake 'vehicle is »also connectedrwith the collar 5, the construction which provides for the disposition ,central portion of the brake drum 6 being bolted of the’brake applying means in a yplurality of to the flange fof the collar 5, and the latter being optional positions.` ' , “_ v, _ f » heldy onto the rear end of the driven shaft 3 by '. These and other objects and advantages of the a threadednut 1 or `other suitable means. ' 30 ‘ present invention will vbe apparent to -those skilled ÍThe brake drum 6 is surrounded by a' brake inïtheart after a consideration of the following band I0 of the externalicontracting type which includes a band. member II and friction brake detailed description, taken in conjunction with the accompanying drawingsillustrating the' pre .ferred construction. o In the drawings: ,l K ' Y ¿ ' 'f ` _’ ~ i 'gure l is a view looking forwardly «toward the rear end of a transmission unitprovided'with a brake construction embodying the principles of`Figure the present 2 `is an invention'f' elevation, " looking . ' ' ’ toward ' ` the 45 right side of the construction shown in Figure ‘1, withY the brake - applying '- means mounted ` at `this lining> I2. ÉThe‘lntermediate portion of the brake band I0 carries `a U-'shaped- member I5 riveted ' or otherwise"securedftheretol inV any suitable manner, ¿andïY the leftv side of the'trans'mission '(Fi'gure’ 45)*` is provided with an apertured boss ' sectionfI-Iì in Ywhichthree Vbolts I1,«~I8Vand I9 are ` disposed andi-adapted» to clamp to the left side of the .transmission an anchoring ¿bar 2|, which has an end?- 2__2 that extends 'rearwardly in be 45 , tweenïthefintermediate portions ofthe U-shaped side of the transmission, with the brake operating“,v anchoringY lug I5. 1 The end 22 of the ‘anchoring ‘ means in> an upper position; ’ « bar 2|V ls apertured', as at 23, and receivesv a Figure Sis a View of the anchor for the brake operating means, looking downwardlyçgenerallyl along the line 43---3 of Figure 2; o ~i >Y .Y Y_ I threaded adjusting > screw ` 24 which ' extends: ra ` `dially *outwardlyA through an _opening inthe an 50 ‘ Y o i Y choring lug I5-and has a kerfj25to accommodatev `as_tool vfor adjusting the position ofthe screw 24. towardthe left side of the ’transmissiomiwitn ,the> - A springV 2,1 is'fdisposed between the outer portion Figure 4_ is a view, `reduced in scaleylooking brake band ranchoring :means gmounted atfthisV offthe :anchoring lug? I5 and has; an inner end seated injafrecess l28 mountedin the endr22 >of 55; side "of `the transmission; ‘ g 55 2, 2,133,074 Y the anchoring bar 2|. The spring 21 reacts arrangement shown in Figure 2, the lower end of against the end 22 of the anchoring bar 2| and a J-bolt 12 is disposed. A spring 13 of relatively biases the brake band |0` for movement away large size is disposed against the lug section 63 Y and is held between the outer surface of the latter ¿from the brake drum 6. The right side ofthe transmission |, referring and an adjusting nut 14. A washer 15 is prefer ably 'disposed between the ladjusting nut ~14 and 1 now to Figure 2„ is »provided with bosses 38 similar to those accommodating the bolts> l1, I8 the lower end of the spring 13. The/end of the and I9 on the left sideY of the transmission, and ` 'Y J`-bolt 12 is threaded to receive the adjusting nut is provided withy threaded Aapertures to receive 14, and a lock nut 11 and a lock washer 18 are 10 bolts 33, 34 and 35, by which a second anchoring also carried by the J-bolt12. As best shown in member 38 is fastened to the' right side of the transmission. The anchoring member 38 is >in Figure 2, the diameter of the opening 1| is some what larger than the rdiameter of the bolt 12, the nature of a reversible casting having a lrear- Y, and this construction, taken together with the relatively large spring 13, provides a rocking con nection between the lugl section 63 and the J-bolt 12, accommodating any angular movement be thickened boss sections 42, 43 and 44 which are tween the brake band lug and the bolt 12 when apertured to provide bolt receiving Openings f the brake is applied. A spring> 19, lighter than spaced to register with the bolt receiving open» the spring 13, is disposed betwen the upperrsur face of the lug section 63 and the lower surface 20 ings at either side of the transmission, and the boss sections 42, 43 and 44 are machined on both of the anchoring arm 39. The spring 19 serves Vwardly extending arm 39 and an upwardly dis t. . Cil‘ posed arm 48 shorterthan-the arm 39. The main portion of the anchoring member 38 includes sides to provide the mounting of the anchoring `member 38 at either sideof the transmission K , withthe shorter arm 40 in either an upper posi y25 tion (Figures 2 and 6)V or in a lower position (Figures 5 and 8). The ,endoffthe shorter arm '3,8 is also provided with av bosssection `45 which is apertured, Vasat 46,Y and is also machined on Y both sides. `The outer end of the arm 39 is pro 30 vided with 'three apertures; an aperture 48 dis posed in the' central plane of the member 38 and in a boss 49 formed at the outerY end of the arm 39; a smaller opening` 58 disposed to one side of the central plane of the member'48 and out 35 wardly beyond the larger opening 48; and a sec ond smaller opening 5| disposed an equalamount on the other side of the central plane of the memberp38 and inwardly the same distance'from the larger opening 48 that thev opening 58 is disposed outwardly. f Y e The brake applying mechanism, which is asso ciated with'and connected to the anchoring mem ber >38, will now be described. As best shown in Figure l, one end of the brake band I8 carries 45 a lug 68 and the other end carries a similar lug 8 I. Preferably, for reasons which will be referred _ , The lug 6| at the other end of the brake band I8 vis identical, for all practical purposes, with 25 the lug 68Yand similarly includes a lug section 83 with pairs of 'webs84 and 85 on opposite sides thereof, the webs 85 reinforcingthe lug andserv ing to distribute the brake-applying stresses and prevent excessive Wear which sometimes occurs 30 at»V the heel of ordinary lugs. 'I'he lug section 83 of the Vlug 6|, like the lug 68, is'V also .provided with openings 81 and 88 at the opposite corners Vof thelug, but when the partsare arranged as illustrated in Figure 2, the adjusting bolt 61 is not disposed in either of these openings. « The upper surface of the lug‘l section 83 in- Fig ure 2 is flat, like the lower surface of the lug sec tion 63, and receives a head 98 which has a curved lug-engaging surface 9| (Figure l) and 40 is apertured to receive the upper end of the J'-bolt 12. The lug section 83 -is also apertured to re ceive the J-bolt. Thev hook end 94 _ofthe J-bolt receives a pivot pin 95 vand is disposed between a pair of cam plates 96 and 91. _The cam plates 45 are generally triangular in shape and each is pro . to later, the lugs 68 and 6| are identical. vEach vided with a cam surface or edge engaging the lug is` fastened in any suitable way, as by rivets, head 98 on opposite sides of the J-bolt Y12. The cam plates are apertured to receive a pivotY Din |88, and a yoke |8| is disposed between the cam plates and pivoted to the pin Y |88, and an operat ing rod |02 is threaded into or’otherwise fastened ' Y . to the ends of the metal strap || forming a part 50 to move the brake band out of contact with the brake drum 6 when thebrake is released. of the brake band |8. The lug Y6|) includes a pair of lreinforcing webs 62 on one side of an aper turedsection 63, and a similar pair of reinforcing webs 84 isprovided on the other side 4.of the ex- ' to the yoke |8| so thatra pull on the .rod |82, in tended section 63. By virtue of ythe reinforcing 55 sections 64, excessive Wear at the heel of the lug . is prevented. The radially outermost end of the the arrangement shown in Figure 2,Y swings the cam plates 96 and 91 about the pivot 95 and eX erts a thrust againstrthe lugv section 83 through the head 90 and reacts through the' bolt 12 against extended section 63 is provided with openings 65 Vand 66 in the cornersv thereof (Figure 3) and in the> other lug section 63. ' The pivot 95-also re 1 the arrangement shown in_FigureV 2, theopening ceives the rear ends of a pair of anchoring links |85 and |86 and the links, at their forward ends, 60 60 65 receives the headed end_of an adjustingV bolt 61 that acts to cooperate with the Ybar 2| in sup-‘ are pivoted by a pin |81 to the upper and rear Y' porting the brakeband and >extends upwardly end ofthe anchoring arm 48. /By virtue of this Y arrangement, the b_rake .applying `pull on the rod ing :throughfthejopening «58 in the anchoring |82 does not tend to forcethe ends ofthe brake band laterally, since the J-bolt is held in proper 65 arm 39, andis provided with a pair of nuts 69 Ywhich may be adjusted to hold the endof the position Ybyits disposition in the opening 48 of brake band I8 carrying the lug 68 in the proper `the anchoring` arm 39 and by the anchoring links position relative to the brake drum 6.V . The bolt' |85 and |86 connected tothe anchoring arm 48. `from the lug 68 and has a threadedgend 68 pass-` k81iñtsrwith'sufficient looseness in the opening A> spring H8, similar to the springV 19, encircles 70 F58 'of the-anchoring arm 39,> and also inthe openingr65 of the lug 63, so that the end of the ` brake'band may be drawn upwardly'freely when n the brake is contracted about the brake drum 6. The ,lug section 63 is also'providedwìth a rela tively large central opening~1|1fin which, inthe the Y(upper end of the J-bolt 12V and isl disposed 70 between the upper surface of theanrclioring arm 39 and the lowerV surface of the lug Ysection- 83. ' 'I'he operation of the structure so- Vfar described is substantially as follows: r j ' » Thesprings 19 and II 8r act >against the~anchor- 75 2,133,014 ing arm 39` to keep» the ends of the brake band '3 posed >in the opening '66 and with its threaded' end disposed in the opening 5| of the anchoring arm 39, the opening 5| now~being on the outer out of contact with the brake >druml 6,` but when- a pull is exerted on the-rod |02., ’the cam‘plates 96 and 91 are swung about their pivotal' connection with the J-bolt and the linksv |05 «and |06 »and sideV and the opening 50 on‘the inner side. however, the'brake band ll!) is mounted in a re pressed downwardly against ther head v9|), which versedï position 'relative to* that shown in Figure receives, and is- movable axially along, the bolt 1, then» the» adjusting'boltA 61' would be disposed 'l2'. The curved surface 9| permits theangular movement between the lug 6|"(Figure 1) and the'` in the ~oizieningß’ß-¿in lthe=lug section 83, but the threaded endwould'be disposed in the outer opening 5| in 'the'anchoring arm 39. In both ofthe arrangements described above, the'` brake applying and Yoperating Amechanism has beendisposed at the right side of the trans head 90 which occurs when the' brake is applied', but the head 90, at the same time, serves to keep the lug from cocking out of the properlpositions. The reaction of the swinging of thecam plates 96 and 91 acts directly through the J-bolt 12 to- exert an upward .pull on the lower lug 60, thero‘cking mission |. If desired, according to the present connection between the lower end of the bolt ’12: invention, Íthe >brake operating and .applying and the lug, by virtue of the relativelyfheavy mechanism` may be disposed-at the left side of spring 13, accommodating an angularmove?nent - `the transmission; and in order to effect this dis of the lug GIL-relative to the bolt 12, correspond- ` 20 ing to the similar angular movement of thel lug 6| relative to the- bolt -‘|2. Due to the length of lthe links 4|65 and |06 and the disposition `of the bolt l2 within the opening 48 Within the an choring arm 39, the movement of -the 1ugs~60 and 6| is, Vfor all practical purposes, a straight position thebrakeband'anchoring bar 2| is mounted on'the right-.hand side'of the transmis-_ sion, being secured 4in place by the bolts‘ 33, 34 26 and 35'that, in Figure '2, held the anchoring member 38, in ñxed position. `The anchoring member 38 is fastened to` the left side of the transmission | by the bolts I1, | 8 and |9 that, in Figure 4, held the brake band anchoring bar 25 line circumferential movement whichV brings -the in position. `In order to accommodate this ar ends of the brake band I 0 Vcloser together and> rangement, the threaded holesin the transmis contracts the brake about the brake drum 6. In sion walls are'preferably disposed in transverse this contracting movement-of the brake`band„the alignment kso that the holes in the anchoring 30 latter is anchored against> rotation with K«the »bar 2| and the anchoring member 38 have the brake drum 6 by virtue 'of’itsfconnection with same spacing so as toprovide for interchange the anchoring bar 2|. rHowever, theV requiredy ability. Actually,‘of course, the bolts l1, I8 and movement of -th‘ebrake bandas awhole toward |9‘may> be employed for holding `the anchoring the drum is accommodated by the-anchoring'lug Vsliding toward the brake drum 81 on the end 22 of the anchoring bar 2| and against the tension of the spring 21. By virtue of the adjusting » screw 24 and the adjusting‘bolt 61, the brake bar 38 inipositionon the left side of the trans mission, j while the bolts 33, 34 and 35 may be employed` for holding the brake band anchoring bar in position on’the right side of the trans mission housing. ` ` v band may be brought to an accurately concentric 40 position with respect to the ' brake drum'> but spaced therefrom, as shown inFigure 1, therre quired amount to permit the free rotationr of the " When the anchoring member _38 is mounted brake drum 6relative tothe brake band |0,when spectively in Figures 6 and'v 8. When the arm 40 the brake is released. 45 ~ , ' ' ' Reference has been made above to Ythe ability on the left side of the transmission, it can be disposedV either with the arm- 40 in an upper position or in a lower position, as shown re is in an upper position, the operating rod |02 extends forwardly in substantially the same po of the brake construction, embodying the prin- ’ . sition as is indicated in Figure 2, but at the left c'iples of the present invention, to meet there quirements of various operating arrangements. Y In the construction shown in Figures 1, 2 and13, 50 the brake operating rod |02,- which is connected vto a hand brake | |0, (Figure 1), is disposed in an upper position at the right side of the transmis sion |, accommodating amounting of the brake ’lever ||0 in the position’ shown. For some in .of the transmission, and when the arm 40 is dis posed in a lower position, the operating rod |02 isV disposed in a positionrcorresponding rto the position vshown in Figure 5, but on the left side of the transmission. If desired, of course, the operating rod |02 inf any of the positions referred to above, may extend 'rearwardly and be operated stallations it may be desired, yfor example, to by a push instead of a. pull. have the brake-applying rod |02 in a lower posi ' While I> have shownfand described above the tion rather than in an upper position, but at .the preferred structures in Vwhich the principles> of right side of the transmission. In order to ac' the present invention have been illustrated, it is commodate this arrangement, the anchoring GO member 38 is mounted in a position reversed from that shown in Figure 2, so that the shorter arm 40 is disposed in thelower position. This is the position shown in Figurev 5, and to accommodate a lower position of the operating rod 102', the to be understood that, infact, Widely different f meanslmay be employed in the practice - of broader aspects of my invention. they What I-` claim, therefore, and desire to secure `by Letters Patent is: > . l. In a brake V_construction for’the rear endof 65 J-bolt 12 and associated'> parts are also mounted ' a transmission; Aa brake band, brake applying in a reversed position relative >to the position. means associated with said brake band, brake shown in Figure 2. It is not,.however, necessary anchoring means for said band. and meansfor to reverse the `position of thebrake band |0-,. optionally> supporting said brake applying means although this may be'done if desired. However, . or said brake anchoring means on either side of as shown vrin Figure 5, thespring 13 isrshown as reacting against the lug-section 83,1whi1e-the l saidtranswmission. Y y ' 2. In a brake construction for the rear end ofl curved head 90 is shown asV acting against the ' a transmission including amusing, va brake band, lower surface of the lug sectionr63». It-will also Land means contracting said brake band, said be noted that the adjusting bolt 61 is mounted . housinghaving means on opposite sides thereof 75 inl Figure 5 inV a position with its head end dis- ' whereby said'ba'nd and contracting means. may 4 e be optionally supported at either side of` said housing. _ 4 A ' Ä Y3. In a brake construction for the rear end of a transmission, a brake drum, a brake band as sociated therewith, and reversible means for an choring the brake band and Vfor contracting Vthe sameabout said brake drum, said anchoring and contracting means being optionally supported on posed in the apertures of said lugs, means con necting one'end of said member _With one lug, means reactingagainst the other end_of said member and against the other lug for contracting said brake band, and anchoring means for said construction comprising a bifurcated arm having one arm portion linked to said contracting >means and the -other arm portion disposed between said lugs, said arm having its mounting portion ar l' 4. In a brake constructionior the rear end of ` ranged to be secured in either one of tWo op 10 a transmission, a brake band, an anchoring mem- y tional positions on the siderof said transmission. 10. In a brake construction, an external con ber-for the brake band, means detachably con necting said anchoring member. to one side of tracting brake band having substantially identi saidl transmission, means engageable with the cal lugs'at its ends, means for contracting said ends of ysaid brake band for applying the same, brake band including a member connected at one 15. an anchoring member for said brake applying >end with one of said lugs, a rockable member opposite sides of said transmission. » means, and means >for detachably connecting said second anchoring» memberto’theot‘ner side of the transmission, both of Asaid detachable means connected at the other end of said ñrst-men tionedffmember and acting. against the other lug, and an anchoring bracket .including arportion being so `related Yto. each other that either an- v adapted to be disposed between said lugs and to 20 choring memberV may be mounted on either side receiveV said iirst'mentioned member, and a sec of the transmission, thereby providing for theV optional disposal of» saidY brake applying Ymeans at either side of the transmission. v 5. In a brake construction for the rear endof a transmission, a brake band, an anchoring" 25. member for the brake band, means engageable - v/ith the ends of said brake band for applying the same, an anchoring member _for said brake 30 appiying means, and bolt means for detachably ond portion disposed adjacent said brake band contracting means Vto receive the reaction there of, said anchoring bracket being reversible to provide for the disposition of said second men 25 tioned bracket portion at one side or the other of the first mentioned portion, thereby accom rmodating the reversing of said first mentioned member and said brake contracting means. 11. In a brake construction for the rear end 30 of a transmission, iin combinatiorna pair of re sides of said transmission, the opposite side Walls l versible> anchoring» members, each of said mem connecting 'said anchoring members to opposite of the latter having holes receiving said bolt bers having identical ¿mounting portions, and means so arranged that either anchoring mem means on eachV side of-said transmission to op tionally receive the mounting portions of either 35 of said anchoring members. Vmay be mounted on either side of'the trans Y35 ber mission, thereby providing> for the optional dis posal of saidibrake applying means atïeither side of the transmission. n 6. In a brake construction, a brake band, rela tively stationary means adjacent which the brake 40 band is disposed, means for contracting said brake band, and separate reversible anchoring means detachably connected with said support ing means and with said brake band and-»brake contracting means, respectively. 45 ~ ` . ' l2. In a brake lconstruction for the rear end of a transmission, the combination of a trans mission housing, brake anchor receiving means on onel side vvallV of said housing, and a similar 40 brake anchor receiving means mounted on the other side wallrof said housing in substantially transverse alignment with said ñrst mentioned 1orake anchor receiving means, saidrlatter means having an offset portion linkedY to the brake op 45 '7. In a brake construction for the rear end of _ erating mechanism and reversible in position on said housing independently of the other anchor a transmission, a brake band, an anchoring mem Y ber for, the band fastened to one side of Ysaid receiving means. Y , 13. In a brake construction, brake operating transmission, >apertured lugs carried at the ends of said brake b-and, means for contracting said mechanism anchoring means comprising a mem V5.0. brake band comprising a` member extending -ber having one end formed toreceive and sup through the apertures in said brake band lugs port portions ofV said brake operating mecha and connected at one end with one of said lugs, nism, said end having'offset arm portions, the a cam member pivoted to> the opposite end of other end of said member having opposite sides said vmember and reacting against the other - formed to provide for?the‘attachment of sai-:1 memberto a support in optional positions with either of said arm portions in uppermost posi ¿fastened to theother side of said transmission, 55 brake band lug, and means for actuating said »cam member, an »anchor for said second member tion. and corresponding means formed on both said 60 anchoring members whereby they may eachbe mounted at either side of said transmission. Y ’ Y Y the external contracting type, apertured lugs 60 carried‘at thejends of Vsaid brake band, bolt a brake band, apertured lugsiastened tothe ends 'of the brake band, an anchorV for the 'brake means disposed in >said apertures'and extending ' therefrom at opposite ends, spring means con necting one end Vof Vthe bolt means to the asso therewith for contracting the brake band, and a said bolt means, a member slidably mounted on 8. In a brake construction for a transmission, 65 ' 14. In a brake construction, a brake band of band, bolt Ameans extending through the aper- ’ ciateé. brake band lugs for relative rocking «move 65 tures of said brake band lugs, means associated ment, cam Vmeans carried by the other end of second anchoring means receiving said boit means ~ said kbolt means and constrained for movement and the reaction of said brake contractingmeans, longitudinally thereof, said member having a and means carried vby said »transmissionat each Y head portion engageable by said cam meansjand 70 70 side thereof for optionally fastening eithersaid a cylindrical curved surface Vadapted to engage ther other of said brake yband lugs, and means Yanchor or said anchoring means thereto. » 9. In a brake construction to be mounted at the rear end of a transmission, a brake band 75 having apertured lugs „at its ends, _a membervdis for rockingV said cam-means for contracting'rsaid brake band. , l. Y- « . . 15._In combination, a¿transmission,¿a brake 75 i 5 2,133,074 drum secured to the rear end thereof, a brake - rotation, and means on each of the sides of said band about said drum having lugs at the adja cent ends thereof, an anchoring member for securing the portion of said band opposite said in ends in positionrelative to said drum, means engaging said lugs for contracting said band about said drum, a secondianchoring member supporting said contracting means, and means for supporting either of said anchoring members in optional positions on either side of said trans Vmission- , I , . 16. A brakey construction for the rear end of a transmission including a circular brake band, lugs on the adjacent ends of said band, means 15 reacting on said lugs for contracting said band, an anchoring bracket comprising ka mounting portion and a pair of oiîset arm portions, one transmission optionally supporting either the contracting means orthe anchoring means in either of two positions thereon. 20. A brake construction including a brake band, lugs on the adjacent ends of said band, an anchoring bracket for said band, means engag ing said lugs for contracting said band, an an choring bracket for said contracting means, each of said brackets having identical mounting por 10 tions comprising spaced apertured bosses where by each of saidA brackets may be optionally y mounted onthe same supporting member. ` 21. A brake construction including a brake band, lugs on the adjacent ends of said band, an 15 anchoring bracket for said band, means engag ing said lugs for contracting said band, an an of said arm portions having linked connection choring bracket for said contracting means, each to said contracting means and the other ofsaid ofY said vbrackets having identical mounting por 20 arm portions> being disposed between and in the tions comprising‘spaced apertured bosses ma plane of said lugs, and means for mounting said „ chined on opposite lateral faces whereby each 20 bracket on said transmission with said ñrst arm bracket may be optionally mounted in reversible portion either above or below said second arm position on spaced supporting means disposed portion. 25 17. A brake construction for the rear end of a'. transmission including a circular brake band, lugs on the adjacent ends of said4 band, means reacting on said lugs for contracting said band, an anchoring bracket comprising a mounting 30 portion and a pair' o_f offset arm portions, one transversely of Vsaid band. , , j 22. A brake construction for the 'rear end of a transmission,` comprising a brake band having adjacent >ends provided with lugs, means react ingv between said lugs for contracting said band, said transmission including a housing having corresponding mounting portions on opposite 30 of said arm portions having linked connection to ~ sides thereof, and bracket means supporting said f contracting means andadapted to be mounted portions being disposed between and in the plane optionally on either of said mounting portions. of said lugs and apertured to receive a portion of 23. A'b'rake construction for the rear end of 35 said contracting means, said> last-named arm a transmission' comprising a brake drum, a brake 35 _ said contracting means and the other of said arm portion having diagonally oifset apertures and said lugs having apertured extensions, adjusting means' extending through one of said apertures band encircling said drum, means for contract ing said band, a support for said contracting means comprising a bracket having a longitudi~ and said apertured extension of the lower lug, ` nally extending arm portion with an aperture 40 and means for mounting said bracket on rsaid transmission With said ñrst arm portion either above or below said second arm portion, said therein extending parallel to the plane of the 40 bracket, a second arm portion lying in said plane and having an aperture extending normal tov said first aperture,`one of said arm portions cen adjusting means extending _through the aper ture in said second arm portion disposed farther tering said contracting means in position and most radially from said band in either position the other forming a- pivotal connection for a 45 of said bracket. , thrust member, preventing cooking of said con 18. The combination, with a transmission hous tracting means relative to said drum, and means ing, of a brake construction at the rear end of on eachside of said transmission for optionally said housing including a brake band, meansen supporting said bracket thereon. v 50 gaging the intermediate portion of said band for 24. A brake construction for the rear end of 50 adjustably anchoring it `in position, means >for a transmission comprising a brake drum, a brake contracting the ends of said band including .an„ band encircling the drum, a bracket having a anchoring bracket, transversely lalined sets' of pair of angularly extending arms terminating in bosses on opposite sides of said transmission, andY „apertured -ends, band contracting means cen Ul Ul means for optionally securing said anchoring tered for contracting- movement on one of said means to either set of bosses and said bracket to arms and supported against cooking on the other 55 the opposite set of bosses. . _ . 19. A brake construction for the rear end of a transmission, comprising a brake drum, a brake of said arms, a `series of apertured bosses on said bracket, a corresponding series of threaded open ings in opposite sides of the transmission, and band encircling said drum, means for contracting means for optionally securing said bracket to 60 said band including a bracket having >offset arml `either side of said transmission. portions, means anchoring said band against . ' LEO A. BIXBY.