1,856, f6%zz/6/6474.2% Z7.Z274/z ZA/2Zays/2a2272. Patented Oct. 26, SHITLE veza vo z. STEERING MECHANISM FOR TRACTORS, III

Transcription

1 1,856,680. E, E, WCKERSHAM, STEERING MECHANISM FOR TRACTORS, APPLICATION FILED OCT, 17, 1918, Patented Oct. 6, 190. SHEETS-S HEET 1. 1 $. S a H. 3. t. EIIR. I. SHITLE % It fi i Semafi 77 veza vo z. Z7.Z74/z ZA/Zay/a7 4-f6%zz/6/6474.% 4%

2 1,356,680. E, E, WCKERSHAM, STEERING MECHANISM FOR TRACTORS, APPLICATION FiLED OCT, it 1918, Patented Oct 6, 190. SHEETS-SHEET. É NNS E4E HEEEE O WY NIEEE 85% AMA. Air LA 441hn). NSZZ 34 ZAINEB4 N Eie % ZZZZZZZZZ4 e 6% & 17 SNSSK I (): E SNS ZENE ity. A A 0-fat A. E. MY X 65SS. e Xe Ska ES Be File: Sai - 3. EN a S. 744, O C,41, Hill i I Mitt 44.%, "It A6 Egg 3. ().E.A. & GE Z 58 St E3 S : m e EE E. oceae are ia,64.6%,

3 UNITED STATES PATENT OFFICE. ELIMER. E. WICKERSHAM, OF STOCKTON, CALIFORNIA, ASSIGNOR TO THE HOLT MANU FACTURING COMPANY., OF STOCKTON, CATIFORNIA, A CORPORATION OF CALL FORNIA STEERING MECHANISM FORTRACTOR. pecification of Letter Patent. Patented Oct. 6, ,356,680. Application filed October 17, erial No. 58,541.. To all whom it may concern dicate the parallel ide bar of the vehicle Be it known that I, ELMERE. WICKER frame. To thee bar are fixed tubular HAM, a citizen of the United State, reid tranmiion leeve 1 and 13 formed inte ing at Stockton, in the county of San Joat Igral with the oppoite ide of a tranmi quin and State of California, have invented Sion gear cae 14. Thi cae ha two com 55 a new and ueful Improvement in Steering partment, a forward compartment 15 with lowing Mechanim i a for pecification. Tractor, of which the foll in which a et of peed changing gear i poitioned, and arear compartment 16 * Thi invention relate to a power tran within which the teering haft and the 0 miion pertain for to motor a peed vehicle, changing and and particularly driving gear of the rear axle 17 are poi 60 teering tioned. mechanim for tractor. The axle 1 extend through the leeve It i the principal object of thi invention to provide a imply controlled mechanim with 1, and drivingpinion 18 and i fitted 18. at Thee it oppoite pinion end are 15 for driving the eparate traction element of in contant meh with oppoitely dipoed a motor vehicle and to thu effect a teering planetary gear 19 carried by planetary 65 of the vehicle by the relative variation in gear pider 0. The pinion 18 are alo the peed of operation of the two traction in contant meh with a circumcribing ring element, the preent invention being imi gear 1, which, in the preent intance, i 0 lar in reult to that hown by the tructure hown a fixed within the drum of a driving 70 hown in my copending application filed procket wheel. One of thee wheel i Sept. 18th, 1918 Serial No dipoed, a will be undertood, at each end.. In the preent intance, however, the of the axle and afford a final drive for a. tructure i implified to merely incorporate link traction chain 3, a indicated in Fig mean for alternately accelerating the Thee procket are provided with oppo peed of the eparate tranmiion unit. ite ide plate 4 and 5. The outer of In carrying out the preent invention I thee plate carrie central hub within contemplate the ue of a multiple peed gear which roller bearing are poitioned to ro et, a driving axle in communication there tatably. Support the outer end of the axle 30 with, planetary gear mechanim eparately 17. The inner plate 5 i provided with an 80 driven by the axle and incorporated within enlarged hub E. circumcribe the tran. the two driving unit and power driven miion portion 1 and 13 and i rotatably mean adapted to be alternately controlled upported thereupon by roller bearing. to effect the different gear mechanim and Thee enlarged hub of the ide plate 5 : thereby vary the peed of the traction unit alo provide braking urface around which 85 affected in relation to the normal peed of band brake 6 are dipoed. Lever 7 the vehicle. connect with the band of thee brake and The invention i illutrated in the accom allow them to be eparately actuated to re panying drawing, in which tard the rotation of the eparate procket Eigure 1 i a ide elevation, with part Telecoping into the tranmiion leeve 90 broken away to dicloe the rear portion of. are tubular hub 8 which form a part of one of the tractor unit and a part of the the planetary gear pider 0. Thee hub power tranmiion mechanim.... are independently upported for a rotatable Fig....i a view in vertical ection taken motion around the axle 17 and are further 45 centrally of the rear driving axle of the provided with anti-friction bearing to up tranmiion mechanim. port them within the leeve of the tran Fig. 3 i a view in plan with part broken miion. The inner end of thee hub carry away to clearly dicloe the control mecha worm gear 9, one of which i fixed to nim of the teering member. each hub 8 for a purpoe which will be 50 Referring to the drawing, 10 and 11 in hereinafter et forth. The bevel gear 30 N

4 1,856,680 i in contant meh with the bevelopinion 31 carried by the counter-haft.8. Thi haft rotation will thu beinparted to the haft extend forwardly through the compart 46. Thi will apply power to the leeve 8, ment 15 and i hown in Fig. 1 a being fitted of the gear pider: 0 upon that ide of the with fixed peed changing gear 33 and 34. machine and will produce a backward rota 70 Thee gear may be brought to meh with tion of the gear pider while the gear car liding gear 35 and 36 carried by the pro ried thereon are being rotated forwardly by the gear 18. Thi will decreae the reult in peller the haft compartment 37, all of 15. aid E". being with he gear 35 and ant peed of the procket driven thereby, are controlled by hifting yoke 38, Suit and, a the oppoite procket i continuing 75 ably connected with a hifting lever 39. at it original rate of peed, will caue the The propeller haft 37 i extended velhicle to turn toward the ide of the road through the partition wall between com correponding to the retarded 'Sprocket. partment 15 and 16, acro the compart The revere liding movement of the dik ment 16 and out through the bearing in the will caue engagement between thi dik and rear of the tranmiion cae. Thi termi the friction member 45, thu producing the 80 nating portion of the propeller haft i pro ame action a previouly decribed between vided with a double faced friction dik 40. the haft 47 and the correponding pider 0. Thi dik i plined to the end of the haft It will thu be een that by reciprocation 0 and may be reciprocated therealong by of the dik 40 to bring it into eparate en 85 hifting lever 41 pivotally mounted to a gagement with the dik 44 and 45 the ve bracket 4 which extend from the rear of hicle may be turned to either ide of the the tranmiion cae. The hifting lever. roadway and may be made to purue any 41 ha yoke-carrying pin 43 which engage deired arc of trave, depending entirely 5 an annular groove in the hub of the dik. upon the frictional contact between the 90 dik The friction member 40 ha oppoite bevel face, one of which may be brought to bear Having thu decribed my invention, what againt a cone-haped friction dik 44, while i the other may be brought to engage a imi I claim and deire to ecure by Letter Pat ent i: o lar dik 45 dipoed upon the diametrically 1. In a power tranmiion mechanim, a 95 oppoite ide from the dik 44. The dik drive haft, a driving axle rotated thereby, 44 i fixed to the rear end of a teering haft driving pinlan fixed to the oppoite end 46. Thi haft i parallel to the propeller of the axle, planetary gear in meh with haft 37 and extend along one ide thereof. aid pinion, gear pi e. circumcribing the 35 The dik 45 i fixed to the rearwardly pro axle and upporting aid gear, ring gear 100 jecting end of the econd teering haft 4 in meh with the planetary gear, worm dipoed in a imilar. relation to the pro wheel fixed to each of aid pider, com peller haft a the haft 46 and upon the op plementary worm gear in meh with aid oite ide of the tranmiion therefrom. wheel and unitary mean for alternately 40 ach of thee teering haft i provided but not imultaneouly rotating either of 05 with a worm gear 48 in contant meh with aid gear to produce.rotation of the pider complementary Worm wheel 9 carried by correponding thereto.. the leeve of the gear pider In a power tranmiion mechanim, a In the operation of the preent invention drive haft, a driving axle rotated thereby, 45 the propeller haft i et in rotation by a drivingpinion fixed to the oppoite end of 110 uitable ource of power and will there the axle, planetary gear in meh with aid after impart driving motion to the counter pinion, gear pider circumcribing the haft 3 when certain of the gear 33, 34,35 axle and up rting aid gear, ring gear and 36 are in engagement. Thi action will in meh with the planetary gear, worm 50 drive the rear axle 17 through the pinion 31 wheel fixed to each of aid pider, comple 5 and the gear 30. Rotation of the rear axle mentary Worm gear in meh with aid 17 will impart rotation to the gear 18 at wheel, power tranmiion mean carried it oppoite end, and, under normal condi by the haft of each Worm, gear and a lid 55 tion, will caue thee gear to drive the ing tranmiion member, upon the main gear 19 to produce, a rotation of the haft adapted to be alternately brought to 10 procket through engagement of the engage Said tranmiion mean to produce gear 19 with the gear i. In thi condi correponding rotation of the pider affect tion the gear pider 0 and their leeve ed thereby. will be locked againt rotation. When it i. 3. In a power tranmiion mechanim, a. 60 deired to guide the vehicle from it traight drive haft, a driving axle rotated thereby, 5 coure of travel the teering haft 49 may driving pinion fixed to the oppoite end be rotated to actuate the hifting lever 41 through a connecting rod 50. If the hift of the axle, planetary gear in meh with aid pinion, gear pider circumcribing ing lever i drawn forwardly the friction the axle and upporting aid gear, ring 65 gear in meh with the planetary gear. 130 dik 40 will be brought to engage the dik 44, and a the dik 40 i in contant rotation,

5 worm wheel fixed to each of aid pider, complementary worm gear in meh with aid wheel, power tranmiion mean, car ried by the haft of each worm gear and a friction dik lidably mounted upon the main haft and plined thereto, aid dik being controlled to alternately engage aid tranmiion member and impart motion thereto. 1,856,680 3 In tetimony whereof I have hereunto et 10. my hand in the preence of two ubcribing witnee. ELMER. E. WICKERSHAM. Witnee: E. O. BoQUIST, J. G. SMITH,