US3688598A - Effort-regulating manual control devices - Google Patents

Effort-regulating manual control devices Download PDF

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Publication number
US3688598A
US3688598A US92480A US3688598DA US3688598A US 3688598 A US3688598 A US 3688598A US 92480 A US92480 A US 92480A US 3688598D A US3688598D A US 3688598DA US 3688598 A US3688598 A US 3688598A
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US
United States
Prior art keywords
control
shaft
control members
lever
members
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 - Lifetime
Application number
US92480A
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English (en)
Inventor
Marcel Rolland
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.)
Renault SAS
Regie Nationale des Usines Renault
Original Assignee
Renault SAS
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 Renault SAS filed Critical Renault SAS
Application granted granted Critical
Publication of US3688598A publication Critical patent/US3688598A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G11/00—Manually-actuated control mechanisms provided with two or more controlling members co-operating with one single controlled member
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20207—Multiple controlling elements for single controlled element
    • Y10T74/20372—Manual controlling elements
    • Y10T74/20384—Levers
    • Y10T74/2039—Pair of levers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20576—Elements
    • Y10T74/20582—Levers
    • Y10T74/206—Adjustable

Definitions

  • ABSTRACT A manual control device which pemiits adjusting with [30] Forelgn Application Pnonty Data precision the raising mechanism of farm tractor imple- Dec. 18, 1969 France ..6943919 mems, comprising two braked control r namely an approach control member and an adjust- 52] us. (:1 ..74/479, 74/522 'comrol member, each control member being 51 lm. Cl.
  • the present invention relates to a manual control device adapted to adjust the tractive effort regulating system of an implement raising mechanism, notably on farming tractors.
  • tractors and other handling equipment comprise hydraulic means for raising implements which incorporates or has associated therewith a tractive effort regulator.
  • This regulator is responsive to the variations in the reaction exerted by the ground on the implement being operated, by raising and lowering same in order to maintain a substantially constant tractive effort.
  • Raising mechanisms are already known wherein the angular stroke of a rotary shaft is utilized for actuating the tractive effort adjustment system. Now in many instances a direct control of this shaft by means of a manual lever is extremely inaccurate in that it is not capable of maintaining at a strict value the working depth of the implement.
  • This manual control device comprising two control members having pivot means interconnected by a lever, is characterized essentially in that said lever interconnecting pivot pins each rigid with one of the two brake control members comprises three aligned pivot points of which the two end ones are rigid with a link pivoted on each one of said two control members, respectively, the central point having pivotally mounted thereon an operating arm rigid with the rotary shaft to be positioned.
  • control shaft can be actuated by means of the two members consisting of the approach or coarse positioning lever which the driver can quickly position in what he considers to be the most favorable zone, and an adjustment lever having its movement stepped-down, this adjustment lever being adapted to be actuated from the position in which the approach lever was previously set.
  • FIG. 1 is a front elevational view of the device
  • FIG. 2 is a side elevational view of the same device with a fragmentary section taken along the line II-II of FIG. 1, the shaft being partially removed;
  • FIG. 3 is a diagram corresponding to the mechanism of FIG. 1;
  • FIG. 4 is the modified diagram of the mechanism obtained from the construction of FIG. 3, after actuating and setting the approach lever, and
  • FIG. 5 is a modified diagram of the mechanism obtained from the construction of FIG. 3, after actuating the adjustment lever.
  • the rotary shaft 1 to be positioned carries at its knurled end a bent lever arm 2 rigid with said shaft, due to the provision of a screw 3 interconnecting the two knurled arms 4, 4a of said arm, in order to clamp them against the corresponding knurled surface of shaft 1.
  • the arm 2 carries at its end a pivot such as a pin 5 having fulcrumed thereon a lever 6 provided at either end with ball joints i.e. a lower ball joint 7 and an upper ball joint 8, providing two other pivot points.
  • a pivot such as a pin 5 having fulcrumed thereon a lever 6 provided at either end with ball joints i.e. a lower ball joint 7 and an upper ball joint 8, providing two other pivot points.
  • a link 9 having one end rigid with the lower ball joint 7 connects the latter to a control member referred to hereinafter as the adjustment lever 10 which comprises a ball joint 11 engaging the opposite end of link 9.
  • lever 6 is rigid with another link 12 connected through a pivot pin 13 to another control member 14 referred to herein as the approach lever.
  • a pair of studs 15 rigid with the case 16 carry two sets of clamping flanges 17 separated from each other by friction disks 18 between which the central portions of control members 10 and 14 are disposed.
  • a pair of prestressed compression-springs 19 are disposed concentiically on said studs 15 and urge said sets of flanges 17 away from each other. The function of these springs is to brake the levers 10 and 14 by means of friction disks 18.
  • the face 20 of case 16 and the adjacent first flange l7 constitute reaction surfaces permitting the simultaneous clamping of levers 10 and 14 urged by said springs 19.
  • the flanges 17 are force fitted on sockets 21 centered on a protection tube 22 surrounding the shaft 1.
  • This device operates as follows:
  • a device for controlling a rotatable shaft comprising a rotatable shaft having a control arm rigidly attached to and extending generally radially from said shaft;
  • control members are mounted on axially diiferent sides of said control arm.
  • said means for braking the rotation of said control members comprises friction discs and resilient means biasing said discs against said control members.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Control Devices (AREA)
  • Agricultural Machines (AREA)
  • Guiding Agricultural Machines (AREA)
  • Lifting Devices For Agricultural Implements (AREA)
US92480A 1969-12-18 1970-11-24 Effort-regulating manual control devices Expired - Lifetime US3688598A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6943919A FR2071127A5 (fr) 1969-12-18 1969-12-18

Publications (1)

Publication Number Publication Date
US3688598A true US3688598A (en) 1972-09-05

Family

ID=9044787

Family Applications (1)

Application Number Title Priority Date Filing Date
US92480A Expired - Lifetime US3688598A (en) 1969-12-18 1970-11-24 Effort-regulating manual control devices

Country Status (4)

Country Link
US (1) US3688598A (fr)
ES (1) ES386350A1 (fr)
FR (1) FR2071127A5 (fr)
OA (1) OA03538A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3910133A (en) * 1974-06-24 1975-10-07 Caterpillar Tractor Co Control linkage for hydrostatically powered drive and steering system or the like
US4664221A (en) * 1986-01-21 1987-05-12 Deere & Company Function control linkage for a vehicle

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1825577A (en) * 1928-10-13 1931-09-29 Paramount Aircraft Corp Brake control for aircraft landing wheels
US3451286A (en) * 1967-11-30 1969-06-24 Lucas Industries Ltd Linkages

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1825577A (en) * 1928-10-13 1931-09-29 Paramount Aircraft Corp Brake control for aircraft landing wheels
US3451286A (en) * 1967-11-30 1969-06-24 Lucas Industries Ltd Linkages

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3910133A (en) * 1974-06-24 1975-10-07 Caterpillar Tractor Co Control linkage for hydrostatically powered drive and steering system or the like
US4664221A (en) * 1986-01-21 1987-05-12 Deere & Company Function control linkage for a vehicle

Also Published As

Publication number Publication date
ES386350A1 (es) 1974-01-01
DE2062271A1 (de) 1971-06-24
DE2062271B2 (de) 1977-05-12
OA03538A (fr) 1971-03-30
FR2071127A5 (fr) 1971-09-17

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