US1039745A

US1039745A - Change-speed gearing.

Info

Publication number: US1039745A
Application number: US55861010A
Authority: US
Inventors: Read Holliday; Edgar Percy Holliday
Original assignee: Individual
Current assignee: Individual
Priority date: 1910-04-30
Filing date: 1910-04-30
Publication date: 1912-10-01
Anticipated expiration: 1929-10-01

Description

Paented 00; L 7 SHBBTShSEEET l,

..HOLLIDAY, E SPEED GEARINGx En Ammo, 1910 31mm wie@ BT HELP GHANG APPLIOATION FIL R. Sz E. P. HOL'LIDAY. CHANGE SPEED GERING. APPLIUATION FILED APR.30,1910.

i lllllllll vI IIII l llllll IIIIM um if Patented 0st. l, w12.

7 SHEETS--SHBET 2.

R, @5 E. RHGLLIDAY. CHANGE SPEED G-EARING. APPLIQATIOHHLED APE. an, 1910.

Patented Oct. 1,1912.

7 SHEBTS-SHBBT 3.

R.. a; E. P.v HOLLIDAY.

CHANGE .SPEED GEARING.

APPLIGATIGN FILED APB.. 30, 1910. 1,089,745. Eaten-@ed ocu-1,1912

7 SHBETS-SHEET 4.

w M 444444 It? JIIJHP! E. E E. E. EOLLIDAY. CHANGE SPEED GEARING.

APPLICATION FILED APE. 30, 1910.

7 SHEETS-SHEET 5.

R. E. P. HOLLDAY.

CHANGE SPEED GEARING. APPLIUATION FILED 11211.30, 1910.

Patented 001. 1, 1912.

7 SHEETS-SHEET 6.

what@ s R. & En P. HOLLIDY.

CHANGE SPEED GEARING.

APPLIGATION NLED Ammo, 1910.

`Patented t. 1,1313

UNiTED sTATEs vPATENT OFFICE.;

READ HOLLIDAYAND EDGAR PERCY HOLLIDAY, OFANEW YORK, N. Y.

v CHANGE-erano eEAnING.

T all whom it may consom:

Be it known that we, READ HoLLinAr and EoGAR PiiRoY HoLLIDAY, citizens of the United States of America, and residents of the borough of Brooklyn, in the city of New York, county of Kings, and State of New York,v have invented certain new and useful Improvements in Change-Speed Gear-` ing, of which the following isa specifica--l L0 tion. A

This invention 'relates to improvements in changespeed gearing for automobiles and the like mechanisms and has for its object to produce a gearing lwhich shall be strong, simple, compact, light in. weight and byl mans of which the number of rotations 2 5A and the controlling levers on'` the left, with parts broken away for the sake of clearness. Fig. 2 is a side View of the gear box on a larger scale. F ig.` 3 is a longitudinal vertical section on line 3 3 of'.Fig. 4. Fig. el is a bottom plan of the gear box with the bottom half of the shell removed, showing mechanism partly in se'tioii. F ig.. -shows an end view of the gt a boX with driving shaft and lever bars in section. Fig. 6 is 'a vertical cross section through the lgear box on line @-6 of Fig. 3.' Fig. 7 is a vertical cross section on line' y-y of Fig. 3. Fig.. 8 is a vertical cross section on line M of' Fig. 3. x 'F' partly in sectionl of the lever mechanism controlling the operation of the bevel gear rings. Fig. 10 lis a front view of the lever mechanism controlling the bevel'gea rings. Fig. 11 is a lan view of the lever mechanism controlling the bevel gear ringsshoilw ig. 2.

ing the selecting and locking plato. is a side view of the lever mechanismcoli-v trolling the shifting and interlocking bevel gear sleeve 11 with the driving( and' 5 intermediate shafts.' Fig. 13 is auf end view.

' of the lever mechanism v shown in Fig.j12.

Fig. 14 is a plan view partly in section foftlie lever mechanism of Fig'.12'. f p 4 The casing or shell of the gear boitl A, is composed of two semi-cylzid rica] section; l

*Specioation of vLetters Patent.

Application led April 3.0, 1910. Serial No. 558,610.

ig. 9 is a sideAelevation and 2 which are firmly secured together by bolts '1a' passing through corresponding ilanges formed on said sections. The open ends of the cylindrical portion are closed' by two. heads 3 and .4; which are connected to the cylindrical portion in a suitable manner, providing tight joints. The cylindrical por" tion 'of the casing is provided near its center with an annular or ring shaped chainJ bei' 5 projecting outwardly from its 'circum- 'feren The heads 3 and 4 are provided in theircentral portions with suitable outwardly lp rogecting"hubs 6 and 7 forming bearings for the passage and support of the driving shaft 8 and driven shaft 9. Th'e drivingshaft 8 which passes from the outsideth'rough bearing 6 into the casing, is connected at its outside end to any suitable 'marce of power. Y The inner 'end of shaft 8 connects 'by means of a feather or sliding key 10 to thev sleeve 1l of bevel gear 12.' The bevel gear 12 with its sleevell is through the feather l'always connected with the driving shaft '8 and must therefore rotate with it whenever the driving shaft is rotated. lThe sleeve 11 with its bevel ar 12 is arranged to be moved horizontavly back and forwardv on the driving shaft 8 and intermediate shaft 13 thus rendering it possible to t-lirow the gear 12 into and out of engagement with the gear ,"31. This operation of sleeve 11 and bevel gear 12 is controlled by means of fork Patented oct. 1, 1912.

shaped lever 14, and ring 15, provided with an annular projection 17 which is fitted into a groove 16 formed 'on the'end of sleeve 11. The fork shaped lever 14 is mounted on the square end of a horizontal shaft 14a placed at righ-t angles to the central axis of the. eylindrical portion of the gear case. Shaft 14 y extends from the inside of the gear casing to the outside of saine through av sleeve 14b fixed a crank lever 14C whose upper end is .provided with a pivotal .connection 14d to a .connecti I rvided vwit

longitudinal slots

18,18 for the bar 100. Sleeve 11 is also prov eine wi and ably inouitedon sleeve 11 .gli its central inward` proieetion 2 'a corresponding groeveI in airing s forming apart of the gear casing. To thev Y outwardly projecting end of shaft 14* is firmly attached to its innerface the pins 19. Fork shaped lever is mounted on the square end of a horizontal shaft 20"L placed at right angles to the central axis of the cylindrical portion of the gear case. Sha-ft 20a extends from the inside of the gear easing to the outside of same through a sleeve 20b forming a part of the gear casing. To the outwardly projecting end of shaft 2Oa is fixed a crank lever 20C whose upper end is provided With a pivoted connection 2()d to a connecting bar 101. By shifting ring 23 t0- ward the center of the gear casing, the pins 19 will be moved into the slots 18 of sleeve 11 until they engage suitable recesses 24 provided in the intermediate shaft 13 and in this manner lock the sleeve 11 and the intermediate shaft 13 together, compelling them to rotate in unison.

The intermediate shaft- 13 is reduced at the end nearest to the driving shaft to a smaller diameter vto provide a suitable pivot '25 which is inserted in a corresponding recess in the driving shaft 8, thus forming a suitable support and bearing for this end of the interinediatelshaft 13. At'the shoulder formed by pvot 25 on the intermediate shaft 13 another reduction in the diameter of shaft 13 is provided. This reduction of diameter forms a ring shaped space 26 Which communicates with the recesses 24 and allows the pins 19 when same are moved to their normal position in the slots 18 of sleeve 11 to rotate with said sleeve, without rotating nytermediate shaft 13. The end of shaft 13 nearest to the driven shaft 9 is provided with a. suitable pivot-27 inserted in a corresponding recess 1n driven shaft 9 forming 'a support and bearing for this end of t eshaft 13. At this end the shaft 13 is enlarged in its diameter and provided with hubs 28,.

Projectingfrcm hubs 28 at right. angles yto shaft 13 and firmly secured to the hubs 28 are'two studs 29, The hubs 28 and the studs 29 are placedl on opposite sides on the circumference of the enlarged portion of the shaft 13 and carry bevel gear disks 39, each provided with three sets of gear faces 31, 32, and 33, each gear face having a different d1- ameter. The bevel `gear disks 30 are kept in their respective position on the studs 29 by -a ring 34 suitably secured to the. studs 29 by means of screws The inner face, of the. ring 34 prevents the bevel gears from s liding from the studs 29, and the outer face rovides a friction'surface for a friction brake secured at 3,6. The'driven shaft 9 which passes from the outside through bearing 7 into the casing is inside of the casing of the same diameter as sleeve 11, and carries at the end nearest to the intermediate shaft 13 a bevel gear 37 correspondingl in di-A ameter to bevel gear 12. The bevel gear 37 on driven shaft 9 connects with bevel gear 12' on sleeve 11 through the Aintermediate gear faces 31, 31, of the

bevel gear disks

39, 30, and as sleeve 11 is connected to the driving shaft 3 through the feather 10, a connection between the driving Vshaft S and the driven shaft 9 is established, which connection of course will undergo a number of changes which the further description -of the devices will explain. On each side of the ring shaped outwardly projecting chamber 5 guide supports 33, 39 are provided on the inner face of the cylindrical portion of the gear casing, forming a part thereof, and projecting a short distance radially toward the center of the casing. Slidably mounted'in the guide supports 38, 39, are bevel gear rings 4() and 41 provided with gear faces i2, 43.

The inner and outer faces of the gear rings 40 and 41 are provided with projections 44 and 45 as shown in Fig. 3. The projections 44 on the outer faces of the gear rings 40, 41 tit into the corresponding re cesses 46 and 47 provided in the guide supports 38 and.v3`9. The projections on the outer face of the gear rings 4() and 41 and

ports

33 and 39 permit a horizontal sliding movement of the gear rings 40 and 41 but y prevent any rotary movement of the same.

recesses provided on the outer faces of the smaller gear rings 43, 49.

The small gear rings 48, 49 are provided with gear faces 50, 51 and their inner faces respectively form supports or bearings for i the driving gear sleeve 11 and driven shaft 9 preventing any vibration and undue bend-y ing strains on. those rotating parts. The longitudinal sliding motion of the'gear rings 40, 41 and 48 and 49 is for the purpose of bringingthem into and out of mesh with the gearsfaces 3.2 and 33 on the bevela gear disks 30 and 4is eontrolledby leversy 52, 53, and 55, connecting

rods

56, 57, 58, 59, see Fig. 4 and connecting

links

60, 61. v

The gear rings 40 and 413 are provided with outwardly projecting'extensions'62, 63 placed on a horizontal plane with the center line of the case. Threaded holes are prorings for securing the threaded ends of the connecting rods 56 and 57 to the gear rings 40 and 48. The connecting rods 56 and 57 pass from the interior of thegear case to the outside through guide openings provided in head 3. The outside ends of the-connect, ing rods 56, 57 are suitably connected to the lower fork shaped portion of the

levers

52, 54 which levers are pivoted at 64, 65 on

brackets

66, 67 projecting from the gear upper ends of the

levers

52 and 54 are conof the levers 53 and 55. tlhe levers 53 and -The projections on the inner faces on the gear rings 40 and 4l tit into corresponding

nected'bylinks

60 and 61 to the hpper. ends the corresponding recesses in the guide supvided in the

extensions

62, 63 of 'the' gear case head 3 forming a part thereof. The

are pivo-ted at 68 and 69 to brackets 70 and 7l proyecting from gear case head 4 and forming a part thereof. The lower` portions f 'of levers 55 are fork shaped and connecttd to the outside ends ot' connecting

rods

58 and 59 and the connecting rods 58 and.. 59 p ssing through guide openings provided in .r case head 4 to the inside of the gear :ase where their threaded ends are secured to the gear rings 4l and 49.

in order to keep the gear rings in their normal. position, that is out of mesh with

bevel gears

32 and 33

levers

72, 73, 74, 75,

Figs. 5 and 6 are pivoted to the uppermost portion of the outer face of the ring shaped chamber 5. Two such levers are provided for each of the connecting links G0, (El and are placed close to the outer sides ot such connecting links. Each correspondinfr pair of levers is connected on its upper eno. through

coil springs

76 and 77 so that '7 and 73 are kept in a normal vertical position through their spring 76, while 74 and 75 are. kept in a similar position by their spring 77. Each pair otl levers engages a yponding pair of pins 78 and 79 secur L to the outside of the corresponding connecting link engaging the surfaces facing each other on thev

corresponding levers

72, 73, 74, and 75. Each of the levers, 72, 73, 74, and 75 has on'ts pivoted end a short arm-79a extending at right angles from it and engaging corresponding stop 8O provided on the casing. Short arm 79a and stop 8O prevent the levers in each corresponding pair from being rocked toward each other by their connecting spring to a position beyond the vertical, as clearly shown in Fig. 2. In this position each pair of pins 78, 72j) will hold its corresponding connect-ing link i'n a normally central position secured therein by the tension ot the

springs

76 and 77 which 'hold their corresponding levers with the short arm 7 9a engaging the respective stops 80. ln this position the connecting `links G0, (il and levers 52, 53, 54 and 55ers holding the gear rings 40, 4l, 48, 49 with their respective gear faces out of mesh with the corresponding gear faces on the gear disks 30.

lt as shownin Figs. 2 and 3, the connect.- ing link Gl is moved to the right, it will ugh its connecting parts bring the gear 4i. into mesh llwith the corresponding Faces on bevel gear disks 90, at the same time moving gea-i ring 40 an equal distancev from its normal disengaged position. The saine operation only reversed, that'is bringing the gear ring 40 into mesh with itsl corresponding gear tace's 533'and moving gear ring 41 farther away from its normal position, will take place it link 6l with its engaging parts is moved to the left. The movement of link Gl to the right will through the pin 79 engaging its corresponding lever 73', pull this lever against the tension of Lhe spring 77 toward the right, moving the lever 73 to an angular position as clearly shown in Figs. 2 and 3. Through this movement, pin 79 is moved from lever 74, said lever being prevented from :tollowing the pin by its short arm 79 engaging` its corresponding stop 80 on the casing. lt the force which moved the link 6l to the right is released, the spring 77 will through its contraction bring'lever 7 5 and link Gl with pin 79 to their normal positions. Link with its connecting part-s operates exactly in. the same manner.

Mounted in the ring shaped chamber 5 of the gear casing is a friction brake. his friction brake consists of two semi-circular arms 8l and 82 see Fig. 6 conforming to the outer surface of ring 34; arms 8l and .82 form a hinge and are secured together through a hinge pin-36. To the sides of the upper portion of the ring chamber on the lower ends of t-he

arms

81, 82 are. formed two vertical

downwardprojecting ears

83, 84. The

ears

83, 84 are pierced and provided with right and left hand threads corresponding with the right and

left hand threads

85 and 86 on the spindle 87. The threaded holes in the

ears

83 and 84 and the corresponding threaded portion of the spindle 87 are of different diameters for construction purposes. The spindle 87 is mounted in a suitable shaped downwardly projecting extension 88 of the ring shaped chamber 5. The spindle 87 is arranged at right angles to the cylindrical portion of the gear casing and is conveniently supported by bearings in the walls' 89 and 90 of the extension 88. The end portion of the spindle 87 entering into and passing through the bearing in the wall 90 is reduced to a smaller diameter and has a shoulder formed thereon which butts against the inner surface of the wall' 90, Lmeventing any shifting of the spindle 87 to the right. A shifting of the spindle in the opposite direction is prevented by washer 91 and locknut 92 on the end of the reduced portion ot the spindle projecting through the outside face of the wall 90. Through this means a shitting of the spindle' 87 in the direction of its horizontal axis is prevented, as is clearly shown in Fig. 6. To the other end of spindle 87 is attached a gear 93 which engages a rack 94 slidably mounted in brackets 95 and 9G. The

brackets

95 and 96 project downwar from the lower half of the cylindrical portion of the gear case and are part thereof. The rack 94 consists of a square portion the upper face of which is provided with teeth. Attached to the ends of the square portion of the rack and forming parts thereof, arp round extensions. 'lhese round extensions constitute the support ot' the square portion of the rack 94 and are slidably mounted in corresponding bearing for the purpose of engaging the friction sur` face on the outer face of ring 34.

Whenever the rack 94 is moved toward the driving end of the gear case, the teeth on the square portion will rotate gear 93 in the direction of arrow indicated in Fig. 3, thereby turning spindle 87 with its right and left hand threads in the same direction, thus closing the

brake arms

81, 82 and bringing friction blocks 99 in contact with the :friction surface on ring 34, preventing ring 34 from rotating. The movement of the rack 94 in the direction just described will compress spring 97 between the collar 98 and the bracket 95. The compressed spring 97 will force the rack 94 back to its normal position as soon as the controlling lever is released. This movement of the rack 94 will rotate the gear 93 in the opposite direction to that indicated by the arrow in F ig. 37 releasing the friction ol the brake shoes 99 on the friction surface of ring 34, permitting ring 34 intermediate shaft 13 and bevel gear disks 30 to rotate.

Suitable controlling devices are provided for the shifting and locking in place of the different operating parts contained in the gear casing as will be hereinafter described in detail.

Connections between the operating parts of the gear case and suitable controlling lever devices are established by means or' connecting bars and connecting links, all of which are clearly shown in Fig. 1. The connection between ring gears contained in the gear case and their respective controlling levers, so placed as to enable a convenient and easy 1nanipulation of same is established by the connecting

links

102 and 103. The connection between the friction Abrake and its corresponding controlling lever is established by means of the connecting bar 94. The connection between the shifting mechanism of the sleeve 11 with its bevel gear 12 contained in the gear box and its corresponding controlling lever is established by means of the connecting bar 100. The connection between the locking mechanism of the intermediate shaft 13 and the sleeve 11 with its corresponding controlling lever is established by means of the connecting bar 101. The connocaut The controlling lever mechanism for the A shifting and locking of the gear rings 40, 41, 48, 49 and the friction brake is shown inl Figs. 9, 10, and 11. A hand lever 104 p iv# 'i oted at 105 to a suitable bracket 106 is pro-.5l

vided vat its upper end with a convenient handle and the usual type .of locking mechanism 107 which makes it possible to retain the hand lever in any required position through the means of thejlocking-device 107 and locking recesses 108 provided on a sui-table selecting plate 109. Just above the pivot point 105, a hinge 110 is inserted in the lever 104 allowing a swinging movement of" that portion of the hand lever which extends from the hinge 110 to its upper end. This swinging of the leverpermits its engagement with recesses 111, 112 provided in the upper portions of levers 113 and 114 and also a placing and moving of the hand lever 104 in any of the

selectingA slots

115, 11G, 117, of the selecting plate 109. d The hinged portion of the lever 104 isvnormally kept in a vertical positionby two springs 118 placed so as to force the hinged vportion of the lever to a vertical central "position `whenever brought in the connecting space 119 which establishes communication between the selecting slots of the selecting plate; The levers 113 and 114 which are placed on each side of the lever 104 and are also pivoted at on the bracket 106 are each pxm'idcd with a corresponding recess 111 :mi i12 on their uppermost ends for the re'- ccplon of the hand lever 104 whenever placed therein for operating and lockingI either of the levers 113 or 114 independently. The upper ends of levers 113 and 114 are at all times in their

respective guide slots

115, 117 of selecting plate 109, and can only be engaged by the hand lever 104 one at a time when in their normal position opposite the connecting space 119. Whenever one of the levers 113 and 114 is operated or locked in any operative position by hand lever 104,` the other remains in its normal position opposite connecting space 119 as clearly shown in Fig. 10. The levers 113 and 114 are extended below t-he pivot point 105 and are pivotally connected at their

respective ends

120 and 121 to their respective connecting

links

102 and 103 through which they operate their respective gear rings in the gear case. The hand lever 104 is also adapted to operate the frictionbrake situated in the gear casing through the medium of the lever 122 pivoted at 123 to the bracket 106. The lever 122 isplaced just back of the hand lever 104'so that whenever. the hinged portion of the hand lever 104 is in its normal centrail position, it is in frontof and exactly in line with lever 122. The lever 122 is provided 'log hrlicmrtnl 3l-03a of lever '22 and rocklngj with :L bell 01.0 lever 121i at 127% @ne arm 12T form@ a lmnclle nests "clrff gh a pif.' Clowumrllly eiomlr ils lowest @ml with u nor Hund lever 1.211 iS proval f rml for fue engagmen o lions 1513 on levers mcs p01 lion of ile lever n handle. TW@ levers front and back and also a l1 alle hund lever 124.

ner to the plae 12C. and 130 are sltuslecl O11 a with the pivot 195i of hund llelr lower ends the lrm 19.9 nml provided with @Xemlsfl p purpose er" Qugugmg block end of hand lever :12%. Both l 130 are proviclcl at lller locking devices. As lle "Locri" levers 12.9 and 1.30 are exi. only decrlb@ the lockmg (Vl/vree on v 'Ille locking device com ing puri thor-QM. The s und HIE the l'ckng; lmr lill i iirslmvvr and inserted im A currespnnurxg 1r,-

' "n its no;

place the im plats 12T p12*@ cownwmcl exemln par` i lng and engaging block fo supporting the lower portion JL: lll@ we lor of lllrill Ver GS1- fthe levers bwl; i0 freir ilona Each provided Willa no cuil each t0 i al; an@ HG. bolt is slicv place on ils 1 one and ores@ ro, Olathe Gillet qr ll to change 129 :md 130 on 1%@ with block 1Q@ is nul the, engaging rojecon 143 prof 'hai purpose placa *the bar l ists of' a asug he ng; :.z, all Wmg asked on its pvot Lr pQ-.rmted "m recess. Lever E30, lOl. Crank lever c, rml; blmpadv lever l', The lr;

20, the latter lever operating the connecting and disconnecting device of sleeve 1l on intermediate shaft 13 situated in the gear case. Lever 129" connects through the connecting bar 100, crank lever lflc, shaft Lilla to fork shaped lever lel- Which operates the device for shifting and locking in place sleeve ll with its bevel gear 12. Y

\ The operation of our improved mechanism is as follow.` lVhen the parts are locked by the mechanisms already explained in the positions shown in Fig.` 3` viz., gear 12 in mesh With'the gear face 31 on the gear disk 30, the gear face 33 in mesh with the stationary gear face e3 and thc gear face 31 .in mesh with the gear 37 and the other parts in the gear case are in inoperative positions, and the driving shaft 8 is rotated in the tirection of the arrow shown in Figs. 3 and -5, the

sleeve

1,1 and its gear l2 will through -the feather l() be compelled to rotate in uni- .son Wfl-hit and the gear face 33 on the disk 30 being in mesh with' the stationary gear face Il", a rotary and revolving motion will be communicated to the gear disk 80 and a rotary motion to the intermediate shaft 13 because the gear face 33 Will be compelled to creep over the face of the stationary gear face i3 which being stationary controls the movements of the gear disk 30 and as the gear face 3]. on'the gear disk 30 is also in mesh with the lgear 37 on the driven shaft 9, the rotation vof the gear 37 and the driven shaft 9 are controlled by the movements of the gear disk 30.

In the drawing' the diameter of the gear face 43 -is four fifths of the diameter of the- L:gear face and therefore the gear 37 and the driven 'shaft 9 Will be rotated in the same direction as the drivingr shaft but their speed will be reduced to one ninth the speed of the driving shaftbecanse the diameter of the gear face t?) beingfour fifths of the diameter of the face 33 and the gear being of the same diameter as the gear fce 3l and the gear 37 one revolution of the shafl will cause the gear disk SO to revolve ninths of a revolution about the station ary gear face i3 and at the same time four fifths of its revolving motion will he neuiraliaed by its enrolling over the face of the jear 3T and the other one iifth or' one ninth of a volntion ivill he connnunicated to the 3i' com iiielling it and its driven shaft Il to rotate one ninth of a r` )lation or at one ninth the spee ivinn' shaft 8 and in thc ,if the diameter of the face 45:3 Were lgreater er face 33, then e and the driven l and in a direction oppo. to the ro', of the drivingl shaft. lt so evident that the ratio ofwotation between the driving shaft and the driven shaft is deterniined in part hy the relative the rl'itation of the shaft Si would be i' diameters of the gear face on the disk 30 and of the stationary gear face with which it is in mesh.

It is apparent that the ratio of rotation of the driven shaft, when the faces on the gear disks SO are out of engagement with all of the stationary gear faces on the gear rings, and the friction brake is not set, the mechanism is in the neutral position and no motion will he imparted to the driven shaft When the driving shaft is rotated.

Having` described our invention what we claim as new and desire to secure by Letters Patent is i l. ln a change-speed gearing, the combination'with a driving shaft and a driven shaft a gear mounted upon each shaft to ro* tate therewith, of an intermediate rotary shaft section, gear .disks mounted to independentiy rotate relatively to and also to revolve with said intermediate shaft section, gear rings locked against rotation and provided Wth gear faces, means forthrowing said gear faces into and out of engagement with the gear disks. f

2. ln a change-speed gearing, the combination With a driving shaft and a driven shaft, a gear mounted on each shaft, of an intermediate shaft Section, right angularly disposed shaft members carried by the intermediate shaft section, gear disks mounted to rotate on said shaft members and adapted to engage with the gears on the driving and driven shafts, a gear ring locked against rotation, and means for throwing' said gear ring into and ont of engagement with said gear disks.

3. In a change-speed gearing, the combi nation with a drivingi shaft and a driven shaft, a gear carried by each shaft, of an intermediate shaft, separate shaft members carried by the intermediate shaft and right anguiarly disposed 'to its axis, gear disks mounted to rotate on said shaft ,members and having gear faces adapted to mesh With the gears on the driving and driven shafts, a gear ring locked against rotation, means for throwing 'the said gear ring into and out of mesh With the faces of the said gear disks, means for locking the intermediate shaft against rotation, and means for releasingsuch locking device.

4f. ln a changespeed gearing, the combination with a driving;` shaft and a driven shaft, a gear carried b v each shaft and ro tating therewith, of an intermediate shaft, separate shaft members carried bv the intermediate shaft and right singularly disposed to its asis, gear disks mounted to rotate on said shaft members and adapted to mesh with the `@gears on the driving and driven shafts, gear rings locked against rotation, and means for throwing said gear rings into and out of mesh Wit-h said gear disks.

5. In a change-speed gearing, the com`bi- 'nation with a drivingshattand a'driven shaft, a gear carried by each Shat't and rotating therewith, of an intermediate shaft, separate shait members carried by the intermediate shatt and right angnlarlj)T disposed to its axis, gear disks mounted to rotate on said shaft members vand adapted to mesh with the gears on the driving and driven shafts, O'ear rings locked against rotation, inans tor throwing the gear rings into and out ot mesh with the gear disks, and means for locking the driving shaft Wit-h the intermediate shaft and for releasing the same.

G. In a change-speed gearing, the eomoination with the driving shaft and a driven shaft, a. gear carried by each shaft and rotating therewith, of an intermediate shaft section, separate shaft members carried by the intermediate shaft section and right anthem in theirengaged posit-ion, and auto-` matic means for throwing the gear rings out ot engagement with the gear disks when said locking means are released.

READ HOLLIDAY. EDGAR PERCY HOLLIDAY. Witnesses as to Read Holliday: CLARnNCn `W. FnANCIs, EvANGnLiNn Pralinen. Yitnesses as to Edgar Percy Holliday:

Leers Bennosn, AMnnN Ansinnen.