USRE12284E - Ooers - Google Patents

Description

REISSUED NDV. 15, 1904.

L'. P. MGOERS. CHANGE SPEED GEARING.

PPLICATIUN FILB SEPT. 24. 1904. 4

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N0.`12,2s4. Rmssun Novia, 1904.

` A L. RMOOBRS. GRANGE SPEED GEARIANG;

APPLIUATIOH FILED SEPT. 24, 1904.

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STATES Reissued November 15, 1904.

' PATENT OFFICE,

Louis P. Moonns, on CLnvELANn, OHIO, AssieNo'aBY MnsNn Assicu-v MnNrs, rro THE rnnRLnss Moron CAR COMPANY, or CLEVELAND, onio A CORPORATION or wasr VIRGINIA.

CHANGE-SPEED GEAmNe..

SPECAIIEIGA'JBIGN` forming part of Reissued Letters Patent No. 12,284, dated November 15, 1904.

No. 737,442, datehugust 25, 1903. Application for reissue filed September 24, 19704. Serial No. 225,834.

` To all `whom, it may concern/:-

Be it known that I, 'LOUIS P. 4Moonns, a citi- V'zen of the United vStates, residing kat Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Change-Speed 'Gearing of lwhich the following is a full, clear, and exact description, reference' being had tozthe accompanying drawings.

My invention relates to the improvement in change-speed gearing especially applicable for use on automobiles whichare driven by engines or motors which drive in only one direction and at' approximately one speed.

Y The invention consists in the novel features of construction hereinafter described,` referencebeing hadkto the accompanying drawings, which illustrate one form which I have contemplated embodying my invention in, and said invention is fully disclosed in the following description and claims.

. Theobject of my invention is to provide mechanism whereby one shaft may be driven from avdrving-shaft either backward or at diferentspeeds forward at the will of the operator. A. n

Referring' to the drawings, Figure 1 is a top planview of the lower sectionof the casing of mydevice, showing the gears and other parts in cross-section. Fig. 2 is a sectional plan view taken below the shafting and gearing,A showing the operating mechanism. Fig. 3 represents a section on the line 3 3 of Fig. 2 looking' `to the right. Fig. is a section on the line 4,4, Fig. 1, lookingto the left. Fig. y'is a detail view of the reversing-pinion shaftshifter; and Fig. 6 is an enlarged View of one .ofi the gears, and it` illustrates one probably .necessary structural characteristic of all of the gears.

In carrying out the above objects I employ a. casing'composed of the two parts A A', having suitable opening,- in the ends thereof for supporting the bearing-boxes a a' a2 CL3, which are held yin place by the caps a* a5 and the rings al, a7.

In the bearing-box a' is mounted the end of the main driving-shaft B, having rigidlysecured thereto a small pinion and having in its inner end an axial cavity Zi', which is adapted to receive a bushing o2.

Mounted in the alined bearing a3 is the shaft G,- this being the shaft which the mechanism shown is designed to drive backward or forward at various speeds. This shaft has the squared portion c and the cylindrical end c', which isrotatively mounted in the bushing b2. Slidably mounted upon the squared por- `tion c is the sleeve D, provided at one end with a spur-gear (Z and at the other end with the internal clutch-teeth and external spurgear teeth d2. The internal clutch-teeth 'of the gear Z2 are adapted to engage and fit upon the small pinion Mountedin the bearirl'gboxes m2 is a counter-shaft E,provided with the squared portion e.' A small pinion c2 and a gear-wheel e3 are rigidly secured to this shaft, and between the gear e3 and 'the bearing a upon the squared portion-e is slidably mounted the sleeve F, carrying a gear-wheel f and having a circumferential groove f 2. The squared portion e is so located with respect Vto the shaft E that when the sleeve F abut's against the small pinion e3 the gear-wheel f will mesh with the small pinion Z2. The sleeve F is moved into and out of this position by means of a fork f7, which engages in its circumferential groove f2 and is slidably mounted at its lower end upon the pin f3, secured to the lug f and to the casing. A This fork is moved to and normally held against the lug fg (at whichl time the gear f and pinion I) are in engagement) by means of a' spring f1". An operating-arm if is rigidly secured to said fork f 7 for a purpose which will' hereinafter be described.

Located in the casing in a suitable position with respect to the sleeve D is the sliding shifting-rod Gr, having rigidly secured thereto a fork g, kwhich engages in the circumferential groove (,Z in said sleeve and servesas a means for shifting the sleeve D and the gears car ried thereby. A collar g2 is rigidly secured to the shifting-rod Gr and has projecting therefroma lug g3, so placed that it will engage the operating-arm f, and thereby shift the vIWC) ential groove if.

to hold the slide in the position shown, al-l,

I path of the pin g* when the pinion z isout o fy 3 manner: If it is desired to retain the shaft C fork f1, and consequently the sleeve F and its gear'f', which is thereby disengaged from the gear b. The collar g2', with its'lug y@ is M ranged upon the shifting-rod G, so that the teeth of the gearci'2 will be brought into complete engagement with the teeth of the gear e3 before thelug g engages' the operatingarm f,- and so, also, that thegear f will be entirely disengaged from thepinion b Vbefore the internal clutch-teethof gear d2 engages said pinion.

A shaft H is securedl toone end of-thecas-` ing, and to a lug a5 therein, andonl this shaft a broad pinion L is rotatably mounted. This pinion has ahub lz', in which -is a circumfer-A A lever P is pivoted tothe casing below the pinion L. At one end of this lever is a pair of jaws 792.123, oneof said jaws,* p3, being longer than the othe`r. To the other end of said lever is connected a'lslide p, havi ing at one yend anupwardly-ext'ended fork p, which engagesthe groove fand is designed to shift the broad pinion It. A spring Q acts though it' is moved into that position by the action of pin 'g4 on the lever P. The lever Pf is so located that its long jaw pf will lie in the engagement with the other gears.

The device is manipulated in the following at rest, the ysleeve D, with the gears, is left in the position shown in Fig. 1, with thegear d out 'of engagement with th e pinion e2 and the external gear Z2-out of engagement with 'the gear es, and also with the internal clutch-teeth of the gear'l2 out of engagement with l'the pinion b. -Shouldv it be desired to lobtain a medium speed, the sleeve D is moved so that the teeth of the gear d2 will engage the gear esl High speed is obtained by shifting'the rod (nr stillfarther inthe same direction, and thereby.

carrying the geared2 along until the lug g3 engages'the arm f u, thereby unlocking the gear f frbm thepinion b and then bringing the ,internal 'clutch-teeth of the gear d2 into en -v gagement with the pinion b. When it is desired. 'to :drive-the shaft C forward .at slow l sp-eed,- the shifting-rod G is moved in the contrary direction until the fork. g shifts the sleeve D and carries the gear-wheel d into en'- r1`he movement of the different parts when in the position just described will be thus: Motion is'conveyed from the pinion through the gear f'. to the shaft E, from thence by the it, and Vcarries the vboth gears d and d2.

pinio e" to the broad pinion h and tothe gearwheel d, whichrdrives the shaft C. This, by reason of thed ifferent movements of the gears,

will convey a reverse movement to the driven shaft C. Whenthe shifting-rod G is moved again in' the. opposite direction to disengage the reversing mechanism, the lug #engageay :the arm p, thereby rocking thelever and positivelyr moving the broad pinion h out of -engagement with 'the pinion e.

It will be'noticed lthat the lever P is bent .toward the operating-pin g. Thile the arm psjof the fork stands directly in the path'of that pin the arm p inidle position just clears, '80;

1t. As soon, however,'as the lever P has begun 'to `move on its pivotthe'arm p travels -crosswise behindV the-pin g, thus locking the '.two pivotally together for the vremainder of 'the movement. 'The important result of this construction1 is that the reversing-pinion his acted on positively'during the movement of sliding yit into and out of engagement with the gear e2. Thespring 'Q is not relied upon to eliect the disengagement,fbut'only-to orce the pinion 'L in to its final position a shor distance 'from the gear e" after itv Vhas been re-f leased therefrom to insure its normal 'retention in this idle position. If the spring were the means for causing the disengagement, it would sometimes happen that.oil or dirt on the teeth of the pinion wouldovercomethe action of ythe spring and prevent the disengagement, blocking the device and stripping the teeth.'4

In order to'facilitate the engagement ofv the several gears as stated,.it is probably-necessarythat the end of the 'several teeth be tapered andtheend of the interdental spaces' garing, :which construction Ais illustrated in ig. 6.,' v Having described my invention, I claim- 1. The combination of the driven shaft C, the shaft E, -a gear e2 fast-upon the latter shaft,

` an endwise-movable and normally inactive reversingfpinion 7L adapted to be moved into 4mesh with gear lez, a sliding gear l on shaft C, a single shifting device, andmechanism operated therebywhichmoves the geard nd pinion iftoward each other and carries he gear d into engagement lwith gear e and then past v2. The. combination of thedriven shaft C, the shaft E, a gear e2 fast upon the latter shaft, anendwise-movabe and normally inactive reversing-pinion L adapted to z be moved into mesh 'with gear e2, .a sliding gear d on shaftU,

a single shifting device for moving saidgea-r (Y in both directions along -said shaft C, ,mech

anism operated .by said-shifting devicel for moving the pinion h towardandiuto mesh with gear e2 and with the gear-andaspring for holding such pinion ik' in-its inactive position,

3. In changefspeed gearing, the combina:

pinion into mesh with II-O - a sliding gear d movable lengthwise only on said shaft, an endWise-movable and normally inactive reversing-pinion, shifting mechanism for moving the gear d into mesh with and past the gear e2, a lever which is moved by said shifting mechanism and which moves the reversing-pinion out of its inactive position into mesh with the gears d and e2.

` 4. The combination of lchange-speed mech-l anism including a shiftable gear, a shiftable reversing-pinion, mechanism for shifting and means operated by said mechanism for 4shifting the reversing-pinion.

5.- The combination of change-speed mechanism including a shiftable gear, a shiftable reversing-pinion, mechanism for shifting the gear independently of the reversing-pinion, a gear for driving the reversing-pinion, and means operated by the gear-shifting mechanism to shift the reversing-pinion positively both into and out of mesh with said gear for driving it. f

6. In change-speed gearing, the'combination of a shiftablegear, a pinion for driving said gear, a normally idle reversing-pinion adapted to be brought into engagement with both said driving-pinion and said gear, means for concurrently shifting both the gear and the reversing-pinion, said means being positive for both the engaging and disengaging movements of the reversing-pinion. i

7 In change-speed geaning, the combination of a shaft to be driven, a slidable gear thereon, a pinion for driving said gear, a normally idle reversing-pinion adapted to be brought into engagement with both said driving-pinion and said gear, mechanism. for shifting the gear, means adapted to be engaged by said mechanism for shifting the reversingpinion, said engagement after being established being positive for the effective movements of the reversing-pinion.

8. In change-speed gearing, the combination of a driving-gear, la gear to be driven, a normally idle reversing-pinion adapted to engage both of said gears, a leverfor shifting said reversing-pinion having a forked end, an operating-pin adapted .to engage saidA forked end and move in a direction to swing the lever and become pivotally locked thereto by such swinging.

9. In echange-speed gearing', the combination of a driving-gear, a gear to be driven, a normally idle reversing-pinion adaptedv to engage both of said gears, a lever for shifting said reversing-pinion having aforked end, an operating-pin adapted to engage said forked end and move in a direction to swing the lever and become pivotally locked thereto by `such swinging, and a spring for forcing said reversing-'pinion into its iinal idle position.

10. In achange-speed gearing, the combination of a driving-gear, a gear to be driven, a

the gear independently ofthe reversing-pinion,

'sliding gears, movable endwise normally idle reversing-pinion adapted to' engage both of said gears, a lever' forshifting said reversing-pinion having a forked end, an operating-pin adapted to engage said forked end and move in a direction to swing the lever and become pivotally looked thereto by such swinging, said lever' being inclined toward said operating-pin to insure positive locking of the pin and lever.'

11. In a change-speed gearing, the combination of a driving-gear, a gear to be driven, a normally idle reversing-pinion adapted to en, gage both of said gears, a lever for'shifting said reversing-pinion having a forked end, an operating-pin adapted to .engage'said forked end and move in a direction to swing the lever and become pivotally locked theretoby' such swinging, said lever having the arm of its fork nearest the pin shorter than the other 4arm to insure positive locking of the pinand lever. V

12. In achange-speedgearing, the combination of a driving-shaft, and an alined driven shaft, a parallel counter-shaft, and mechanism' transmitting motion fromthe driving-shaft to the counter-shaft, with ,a gear fixed to the. counter-shaft, asliding gear movable. length- Wise only upon the driven shaft', a reversingpinion' mounted upon an axis parallel with said shafts and movable along' said axis, a single shifting device, and mechanism operated thereby to move the gear on the driven shaft, a slide carrying a fork" which moves the reversing-pinion, a pivoted lever connected at one end with the last-mentioned slide, and

having on its other end a fork of which one arm is longer than the other, a pin which is secured to the shifting device and which enters said fork, and a spring which acts to hold the reversing-gear in its normal inactive position. y

13. In achange-speed gearing, the combination ywith the main driving-shaft, a small pinion secured thereto, a driven shaft, suitable only on said driven shaft, for operating the same, a counter-shaft, a sliding gear movable endwise only upon said counter-shaft and adapted normally to be retained in engagement with the pinion on said main driving-shaft. a fixed gear upon said counter-shaft, a fixed pinion upon said counter-shaft, said gear upon said countershaft being adapted to mesh with a sliding gear uponthe driven shaft, and said iixed pinionupon the counter-shaft being adapted to mesh with another sliding gear on the driven shaft, a second counter-shaft, a pinion loosellvY mounted upon the same adapted to he brought into engagement with thofixed pinion upon said {irst-nie ntioned counter-shaft, and to mesh with one of said gears upon the driven shaft when the fixed pinion uponsaid counter Shaft and' said gear on said driven shaft are mit e155 engagement, and means for shifting ali Oia id shiftable gears, substantially as described i IOS 14. i In a change-speed gearing, the combina-- tion with the main driving-shaft, a pinion secured thereto, and a driven Shaft, of a counter-shaft, Sliding gears, movable endwise only `on said driven shaft, and adapted to rotate the same, a sliding gear movable endwise only on said counter-shaft and adapted to rotate the same,a shifting-fork controlling the movement of said gear and normally retaining the same in engagement with the pinion upon' said main driving-shaft, 'an operating-arm secured to said gear-operating fork, a fixed gear'and a pinion upon said counter-shaft, a second for said operating-fork, ashifting-rod', a fixed' lfork upon said 4shifting-rod adapted to shift in the end of said main driving-shaft@ sliding counter-shaft, a broad pinion loosely mounted upon said second counter-shaft, an'operatingfork for said broad pinion, an operating-lever the gears upon said dri'ven shaft, a lug provided on said shifting-rod for tripping said 'operatinglarm of said gear upon said irstmentioned counter-shaft, and a second lug provided upon said rod for engaging said operating-lever of said broad pinion, substantially as described.

15. In a change-speed gearing, the combination with the easing, and main driving-shaft,

mounted in said casing, a pinion secured to said shaft, a driven shaft also mounted insaid casing and having a. shank'having its bearing gears movable endwise only upon said driven shaft, one ofsaid gears having internal clutch#4 teeth and the internal clutch teeth being A -adapted to engage the pinion on the main driving-shaft, a counter shaft rotatably mounted in said casing. a gear loosely mounted upon said counter-shaft and adapted to slide into and out of mesh with the gear on the driving-shaft, a pinion fined upon said counter-shaft, a fork operating the gearl pinion, Jawsrupon said lever, a shifting-rod entering said casing, a fixed fork upon said :rod for operating the slidably-mounted gears upon said counter-shaft, and a lug for engaging-the -jaw'sof said lever, thereby operating the same, substantially as described.

In testimony whereof I hereunto aiix m5 signature in the presence of two lvvitnesses.

LoU'is RMOOERS. Witnesses: y

Y ALBERT H. BATES, B. W.BRoeKn'rr. l

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