US1403259A - lewis - Google Patents

Description

the ,Y of Hons-Jon, the State oi Tenes, have' new and useful improvements in motors7 of 'which the :following is t speciiieetion.

My present invention relates generally 'to tr eters, and ,more psrticuhidy zo s tractor oit the general descr' d and claimed in my copending application, Serial No. 899,599, which was tiled July 98; 1920.` in ecrtein respects my present i .venton invoives but a. rearinngernont o1 the parts of my previous application, insJ in the transposition the driving wheels from er, so es to si t Consider Libie improvein in so :for as sn'nplicity of control is conc: ed.. Ey this change, which necessarily involves s re-srrmiecnient of the transmission housing; to the e oi which and the front to the Ac drive Wheel sspnorting' memes are sdjN sbij, con? L .1 ob'tmn s much more rigid i and succeed in einninat e number oi' parte so es to add tothe dnrnbiiity and si'pcerence of the tractor.

-in certffin other respects, es for instance the steering by the front Wheels sione, and eve through power connection, my present improvement-s are Sonie what more of departure from previous eppiicstion.

These and ce1-t l other changes Wil. be better und ood iroin the ioliovving description, in ich reference 's nie/de to the accompanying drawings, forming s tiert of 'this speciiication, and wherein,

Figure l is fi view of my improved tractor complete,

Figure 2 is :i top pian view thereof,

Figure 3 en enlarged iront vien7 of the centrui 'portion ot the :iront oslo and its supports partly broken sway and in section,

Figure e is s sectioned side view of the ports shovvn in 3,

Figure 5 is :in enlarged horisontei 'seotion thros'h portion sion Z is e, detail section through the @hitch supporting portion of' hait of Figure 5, f

' igure 8 is s, pien view of e slightly modified forni of lever controlling the"p0wer actus-ted steering connections, and

Figure 9 is e detail sectional View ofthe clutch' lever and its supports. j

According to vmy present improvements the drive Wheels l are disposed at the rear of the tractor and mounted at vthe lower ends of shiitable casings 2, the upper; ends of which are ,movabiy supported by means distance pieces 3 in connection Withone side of the transmission case i and the trans; mission. case cover 5 st the otherside'. The driving" connections of the drive Wheels 1 extend :troni the transmission mechanism downwardly through the Wheel supporting and adjusting casings 2 in thesame manner' es in my application above referred to, the

movable connections oi these Wheel.v supportinf cs's'ings with 'the transmission cese permitting shittingoi the drive Wheels to reise porting' our 8 which is bolted as 'shown in Figure l to the rear wall of the transmission cese The clutch gear shift are controlled by :i hand lever 9 and the steering is -controlled by s hand lever 10 it being noted from Figure 2 inparticular that both of these levers ere mounted within convenient reach of the operstors seat l7.

iovver for steering purposes is transmitted forwardly from the transmission case 4 to the front of the machine through s shaft l2 having universal joints' 13, and braking power is applied through a foot lever' 11.

The motor le, With a orward radiator 15, e hood 16 over the motor, and a fuel tankv the latter of which is mounted on supports shove the forward portion of the transmission cese L and supports the rear end of the hood 16 Whose iol-Ward end is secured to the radiator 15, are, like thetrans mission Li, supported in a U-shaped horizontally disposed frame 18, the front portion of which is curved substantially on tween angle irons 21 and flat iron straps of the frame 18. This supporting member 22 so as to cooperate therewith in the protection of the radiator. The front wheels 23 are adjustably mountl ed on the downturned side `portions of the front axle 24 of inverted U-shape,'by means of clamps 25 at the inner ends of the wheel spindle, and it will be noted from 'Figures 3 and 4 in particular that anapproximately circular; supporting member 27 Yis securely bolted by bolts 26 in the forward portion 27 has a depending substantially cylindrical portion 27a below the frame 18 which houses a large horizontally disposed Worm wheel 28, and is provided at one side with a horizontally cylindrical enlargement 27' which houses and supports a worm 29 in engage ment with one side ofthe worm wheel 28.

In the frame 18 upon the upper side of the supporting member 27 are ribs 27c which support a bearing 27d adapted to receive a boss and the like at the lower front portion of the motor 14 for the support ofthe latter, and this supporting member 27 is also provvided with a depending cylindricalI hub 27 e within and concentric with its cylindrical lower extension 27, forming a vertical pivot about which the front axle 24 is rotatable for steering purposes.

For the foregoing purpose front axle 24 is securely though adjustably clamped at a point intermediate its ends toa ring 30 which latter has for this'purpose diametrically outstanding lugs 30 provided withl concavedv and serrated lower surfaces forming seats in which externally serrated split collars 32 are normally held in a'rigid manner by U-bolts 31. As seen particularly in Figure 4 the inner surfaces of the split collars fitthe squared surface of theaXle so that the latter. yunder normal circumstances is rigidly held and is`still permitted adjustment by loosening the U-bolts 31.

The ring 30 is also provided with diametrical bearing extensions 30b vdisposed in a plane at right angles to the diametiical plane ofth'e lugs 30a, these bearing portlons 30b receiving the opposite ends of a pm 62 'which extends through depending lugs 33 of a member 33, rotatable by virtue of its hub 33b laround the hub portion 27e of the supporting member 27. I This member 33 has an upper upstanding 'flange to which the worm wheel 28 is'securely fastened as seen in Figures 3 and 4 and is held in place by a ring o'r washer 33 secured tothe lower portion of the hub 27 of the supporting member, and it is thus obvious that the two forward guide wheels 23 are vertically shiftable on the piri 62 and the entire front axle is rotatable on the hub 27e for steering purposes, under control of the worm 29 the latter of which yis mounted in bearings 34 as seen in Figure 4 and has a short rearwardly extending shaft connecting with the front universal joint 13 before mentioned.

The rear unite/rsa1 joint 13 connects with the forward eigld of a shaft 44 rotatably mounted in bearings 4G and 47 ofa portion 4" of the transmission case 4, which portion 4"is separated from the main compartment of the transmission case by a wall 4a. 0n the shaft 44 is a pair of `spaced opposing bevel gears 42, each rotatable on a bushing 43 against an anti-friction thrust collar 45,

and each disposed at one side of a polygonal portion 44a .of the shaft 44, shown in the gagement with clutchfaces carried by thesegears and is under control of a shifter yoke 50 secured upon the lower end of a vertical shaft 49 as seen in Figure 5, upon whose upper end is secured the controlling handle 10. The upper portion of shaft 49 has an indentation normally engaged by a ball 51 pressed into place by a spring 52 held bya screw plug 53 as seen in Figure 6.

As seen in Figure 5 the two bevel gears 42 are engaged and simultaneously and continuously rotated, though in opposite directions, by a beveled pinion .41 mounted upon the adjacent end of a shaft 37 which has a gear `38 in the transmission case 4 engaged with any suitable gear of the transmission throughI which braking power can be applied. This shaft 37 has a bearing 39 in the wall 4?* above mentioned and is provided with a brake hub 55 engaged by a brake band 56, Athe latter of which is controlled through the usual contracting and expanding connections of a shaft 56aprojecting externally of the portion 4b of the transmission case and to which the foot lever 11 is connected as shown in Figure 6. i

lnstead of the hand lever lcontrolling the direction of shifting movement of the clutch collar 48 and consequently direction of power rotation of shaft 44 for steering purposes, I may utilize upon the upper end of the vertical control shaft 49 a double-end arm 54 such as shown in Figure 8, whose ends are apertured as at 54u for the attachment of iiexible control lines or reins in case control o f the steering is desired to be eected from a rear or trailing vehicle whose draw bar or cylinder attaching means may be connected to the tractor beneath the transmission case 4.

the cliiich end gear shiii Viririe of the handle or lever 9*, the durch and gear Shift perte hcing coiieiiiplered es Similar io those scribed in my previous epplicoioo. For ihie purpose the hoch swings by viriue of its pivot pon :i rotaiiiig erm 6l and Shiite ori the ohci eo es to impera, lengt roceiioo and rotation 'to o,

, controi 'to Lhe ouier ood 5S oi which the lever 9 is 'ii/o ed its lower end of@ f l here il'oriher do we gliceiioii, have i Ls sieied coni/rol is had by l5 :oo port preseii'c improve? e'oie although 'the nature oi? izw'cer .obviously edn* oi more ready and more simple @oir trol is iieriiiited hy the 'erector brucsieeri L meiiiher in *bhe i'orward pol ich o.. the 'fimiiet Wlieeis, axle on ich the Wheeis are roaiehly inouied7 adjusi-ehle cormec'ione Unimog the axle with the seid rotatable eeeririg; member, and hand coiiiiroiled power actuated connections leedi-rig 'forwerrli the ii gosmiesion cese and engaging he roieizehle steering member rol rod Sicilie/te he ieiziber.

2. iocludirigg forward seeririg 35 od roer iraciioii Wheels, a, horizon- 'frame :i moior iii "che ironie,

:i ht e upon the which me .steering Wheels e power eccueiecl rom forward portion of v rolvi'ohle coni-flections leerling to seid ro e steering membei?, end manuel r conirolling 'the 4 -5 direciioii oi' romiioh of iie saeeriog coozieci-ions,

3. i sieer Wheels end re opposite eides'oi the Y a o j'usi Qom exile h vii opposite iiiciufling Wheels et sion cose rem: of the motor, a horieoiiiai rotatable steering member m ihe ierwsird portion of the frame? e nog rotatable jvith seid member und Wihwiiich the from axle has o tilts-ble comiecii to, and manually controlled power actuated connections for rois/sing seid member iii ieieigively opposiiel direciions.

5. A tracor havin e, r d supporting memoer et "e ici-we rfi poii'iyiolo provided Wibh 5 h t i, .e steering mein? huh and having g, opio exi ,5 ,i iceiiy through :and elmoiigh il?. seid seering :i2-ile hzi'viog :i lotemhly edjueieble coiineoiioo with the se d r11/1g. :it 'righi @inglesa to ihe said pin,

sier-.ri wheels ai opposite eiids of iheexle, and eoimeciioiis for seid steerloer.

n e tiecior, *forward steeriiw Wheels, e ifo/ing dowroioriied eiids upon which ediiieizehly mounted, ymember 'ro w' ich ihe axle is ciemped and with res'peoiJ so Hvhieh who exie is rotatably end longitudinally edjue'ehle, e rotatable seering member wiih which seid firs; named member is roetehle end wish respect to which seid r .irst named member hes a pivoied iilteble comiecioii Vm a plane ai right ongles to ehe exile, end means: 'for roietmg seid steering -memher in reloiively opposite directions.

27. 'iii a tractor, e forward horizontally dispoeed eieerihg member rotatable on o ver* tical axis and hei/ing spaced depending lugs; e. having e diemeiricel pin extending through .sail inge and having diemetrical lugs projeciiig outwardly therefrom in a plone et eagles to ille pin7 o polygonal sise-ring axle edjustebly clamped to. the said lugs of she ring and having angular outer end' porcions, and rotatable s'seering Wheels having edjusteoly clamped connections upon the angular outer ends of the axle es end for the purpose described.

8. tractor having e rigid supporting member' ai its forward portion provided with a. depending huh, e rotatable steering memher 'joiiriialed on seid hule and having lugs depending therefrom at diametricelly opposize points, a ring around the lugs having' dim'netrically projecting lugs et right :inglesl to 1the lugs of the steering' member, a. 1n projecting diametrically through the ruig and through the lugs of the steering member,

axle, clamps securing the axle. in rotatable and lengthwise adjustable relation to the lugs of the ring, steering Wheels et opposite ends or" the axle, and connections for rotating the seid steering member.

9. A tractor having e forward horizontally disposed steering member rotatable on a, Veriicel axis and provided with depending diemerically opposed lugs, e ring hei/'ing diathe exernal toothed Surfaces of the clamp 10 ing members, @e5-bolts extending 'hrough the ring; lugs and engaging the said clamping members of The axle, said axle having outer anguar end poron, and steering' wheels rotatable on 1the angular outer ends of the J axle.

'f2-T@ LEROY LVVS-

Images