GB761431A - Improvements in four-wheel drive motor tractors - Google Patents

Improvements in four-wheel drive motor tractors

Info

Publication number
GB761431A
GB761431A GB793952A GB793952A GB761431A GB 761431 A GB761431 A GB 761431A GB 793952 A GB793952 A GB 793952A GB 793952 A GB793952 A GB 793952A GB 761431 A GB761431 A GB 761431A
Authority
GB
United Kingdom
Prior art keywords
unit
gear
carrier
tractor
bevel gear
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB793952A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB793952A priority Critical patent/GB761431A/en
Publication of GB761431A publication Critical patent/GB761431A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Arrangement And Driving Of Transmission Devices (AREA)

Abstract

761,431. Tractors. WEBSTER, N. March 30, 1953 [March 28, 1952], No. 7939/52. Classes 79(1), 79(2) and 79(5). A motor tractor comprises two driven units, namely a front unit 1, Fig. 2, including a power unit 5, gear box 6 and reduction gears, road axle and wheels 4 and a rear unit 2 including a shaft S, Fig. 3, driven from the unit 1, a reduction gear, road axle and wheels, the rear unit being in driving connection with the front unit by being pivotally connected, at 11, by means of a tubular casing 12, about a vertical axis passing through the centre about which a driven planet bevel gear 9, Fig. 3, oscillates, a steering mechanism being provided which enables the front unit 1 to be pivoted relative to the rear unit 2 and so control the direction of the tractor, which mechanism comprises a quadrant gear 14 fixed to the front unit and in mesh with a worm 15 mounted on the rear unit. The tubular casing 12, Fig. 2, en. closes the shaft S and has pivots 11 engaging in bearings 13 formed on the casing of the unit 1. Referring to Fig. 3, the shaft from the gear box 6 drives a bevel.gear 7 which through the medium of the planet bevel gear 9 drives a bevel gear 8 on the shaft S. The planet bevel gear 9 is mounted on a carrier 10 provided with teeth 20 which mesh with a fixer gear 19 on the unit I so that when the tractor is turned the gear 9 is rotated with the carrier in order to cancel the disturbing action between those gears and the main drive shaft. Slight axial movement of the bevel gear 8 towards the rear of the tractor is permitted when the tractor is turned in order to maintain correct mesh between the gears 7, 8 and 9. This effect is achieved by semi-circular slots in members 22 mounted in the carrier 10<SP>1</SP>, engaging pegs 23 attached to a carrier 24 for the bevel gear 8. Whilst sliding movement of the carrier 24 is thus permitted rotation is prevented by means of its squared end 24a slidably engaging the member 12. Individual ratchet clutches are provided for driving the rear wheels instead of a differential gear and the front wheels are driven by individual friction clutches. The latter clutches may be controlled to assist the steering. The rear unit 2 is capable of limited rotation about the longitudinal axis of the casing 12.
GB793952A 1952-03-28 1952-03-28 Improvements in four-wheel drive motor tractors Expired GB761431A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB793952A GB761431A (en) 1952-03-28 1952-03-28 Improvements in four-wheel drive motor tractors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB793952A GB761431A (en) 1952-03-28 1952-03-28 Improvements in four-wheel drive motor tractors

Publications (1)

Publication Number Publication Date
GB761431A true GB761431A (en) 1956-11-14

Family

ID=9842682

Family Applications (1)

Application Number Title Priority Date Filing Date
GB793952A Expired GB761431A (en) 1952-03-28 1952-03-28 Improvements in four-wheel drive motor tractors

Country Status (1)

Country Link
GB (1) GB761431A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4368797A (en) * 1975-01-30 1983-01-18 Lely Cornelis V D Row-crop front and rear wheel drive articulated tractor for heavy-duty operations
US4512433A (en) * 1975-01-30 1985-04-23 Lely Cornelis V D Row-crop front and rear wheel drive articulated tractor for heavy-duty operations
US5209320A (en) * 1991-01-24 1993-05-11 Harrer Jerry A Offroad agricultural vehicle with articulated steering

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4368797A (en) * 1975-01-30 1983-01-18 Lely Cornelis V D Row-crop front and rear wheel drive articulated tractor for heavy-duty operations
US4512433A (en) * 1975-01-30 1985-04-23 Lely Cornelis V D Row-crop front and rear wheel drive articulated tractor for heavy-duty operations
US5209320A (en) * 1991-01-24 1993-05-11 Harrer Jerry A Offroad agricultural vehicle with articulated steering

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