US3795152A - Dual lever control - Google Patents

Dual lever control Download PDF

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Publication number
US3795152A
US3795152A US00281515A US3795152DA US3795152A US 3795152 A US3795152 A US 3795152A US 00281515 A US00281515 A US 00281515A US 3795152D A US3795152D A US 3795152DA US 3795152 A US3795152 A US 3795152A
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US
United States
Prior art keywords
handle
control
control element
movement
support
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
US00281515A
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English (en)
Inventor
T Campbell
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.)
Caterpillar Inc
Original Assignee
Caterpillar Tractor Co
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 Caterpillar Tractor Co filed Critical Caterpillar Tractor Co
Application granted granted Critical
Publication of US3795152A publication Critical patent/US3795152A/en
Assigned to CATERPILLAR INC., A CORP. OF DE. reassignment CATERPILLAR INC., A CORP. OF DE. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: CATERPILLAR TRACTOR CO., A CORP. OF CALIF.
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
    • G05G9/00—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously
    • G05G9/02—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G13/00—Manually-actuated control mechanisms provided with two or more controlling members and also two or more controlled members
    • G05G13/02—Manually-actuated control mechanisms provided with two or more controlling members and also two or more controlled members with separate controlling members for preselection and shifting of controlled members
    • 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
    • Y10T70/00—Locks
    • Y10T70/50—Special application
    • Y10T70/5611—For control and machine elements
    • Y10T70/569—Lever
    • Y10T70/5717—Multiple
    • Y10T70/5721—Externally mounted locking device
    • Y10T70/5726—With padlock
    • 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
    • Y10T74/20012—Multiple controlled elements

Definitions

  • Wheel loaders normally employ a single lever control for independently or simultaneously controlling movements of its lift arms and bucket tilt linkage.
  • an additional lever control is normally required for controlling the opening and closing movements of such multi-purpose bucket.
  • the conventional handle of the added lever control pivots in a single plane, the operator is unable to manipulate both lever controls simultaneously with one hand thus lowering the operators working efficiency.
  • An object of this invention is to overcome the above, briefly described problem by providing a compact and economical dual lever control comprising first and second handles movably mounted on a stationary support with the first handle being operatively connected to first and second control valves and the second handle being operatively connected to a third control valve. Movement of the first handle in a first direction will acmate the first control valve whereas movement of the first handle in a second, transverse direction will actuate the second control valve.
  • the second handle is preferably positioned closely adjacent to the first handle to be moved simultaneously therewith to actuate the third control valve when it is moved in the second direction, but to be non-functional when it ismoved in the first direction.
  • Other novel aspects of this invention comprise the utilization of a locking device to selectively lock the handles in a neutral position of operation and positioning means associated with the second handle for frictionally holding the second handle in a selected position of operation.
  • FIG. 1 illustrates a dual lever control comprising first and second single lever controls and 11, respectively.
  • Lever control 10 is fully disclosed in US. Pat. Application Ser. No. 242,307, filed on Apr. 10, 1972, by Trevor G. Campbell, for MuIti-Movement Single Lever Control, assigned to the assignee of this application.
  • lever control 10 comprises a first handle or control lever'l2 pivotally mounted at a pin 14 for pivotal movement about an axis Y.
  • First linkage means comprising a connecting rod 15 universally connected to handle 12, a bellcrank 16 and a link 17, interconnects the handle and a control element 18 of a first control valve 19 for reciprocating such control element in response to movement of the handle in a first direction A.
  • the first linkage means further comprises a tubular bellcrank 20, pivotally mounted on stationary support 13 for oscillation about an axis X, having a first arm 21 attached to handle 12 and a second arm 22 pivotally connected to a second control element 23 of a second control valve 24 by a link 25.
  • Second lever control 11 comprises a second handle or control lever 26 pivotally attached to a first end of a connecting rod 27 by an adjustable bolt 28 disposed on an axis Y parallel to axis Y.
  • the rod is pivotally mounted on spaced support brackets 29 and 30, secured to stationary support 13, for pivotal movement about an axis X which is parallel to axis X.
  • a lever arm 31, secured to a second end of the rod, is pivotally connected to a link 32.
  • the link interconnects the lever arm with a third control element'33 of a third control valve 34.
  • FIGS. 2 and 3 A locking means for locking handles 12 and 26 in their neutral and stored positions is illustrated in FIGS. 2 and 3.
  • the locking means preferably comprises a plate 35 pivotally mounted on stationary support 13 by laterally spaced pivot pins 36 and 37.
  • the plate has slots 38 and 39 formed therethrough which are respectively positioned to receive lugs 40 and 41 therein.
  • the lugs are secured to handles 26 and 12, respectively, and lug 40 has an aperture 42 formed therethrough adapted to receive a padlock (not shown) to lock the plate and handles in their neutral positions (FIG. 1).
  • the handles may be placed in their operative conditions of operation by removing the padlock and by swinging plate 35 counterclockwise so that slot 38 engages a post 43, secured to the upper surface of stationary support 13.
  • the post has an aperture 44 formed therethrough adapted to receive the padlock which has been removed from aperture 42.
  • a rubber bushing 45 may be positioned between the post and stationary enclosures to prevent the plate from rattling during storage.
  • a pair of resilient, rubber bushings 26 are preferably interposed between the first end of rod 27 and the bifurcated end of handle 26 to provide positioning means for frictionally holding the handle in a selected set position when it is pivoted about axis Y.
  • handle 12 In operation and with plate 35 pivoted to its storage position on post 43, the operator may move handle 12 in direction A to reciprocate valve control element 18 and/or he may move the handle in direction B to reciprocate valve control element 23. Since handles 12 and r 26 are positioned in close proximity with respect to each other, handle 26 may be simultaneously moved along with handle 12, if so desired. Pivoting of handle 26 in direction B will reciprocate valve control element 33 whereas movement thereof in direction A is nonfunctional. By permitting lever 26 to be moved in its non-functional direction, the operator may manipulate both of the handles with one hand to actuate control valve 19 or obtain simultaneous actuation of control valves 24 and 34 or control valves 19, 24 and 34. Also, when the operator desires to manipulate only handle 12, handle 26 may be pivoted counterclockwise to a non-interfering position, adjacent to stationary support 13.
  • a dual lever control comprising a stationary support
  • a first lever control including a first handle
  • first and second control valves respectively having first and second control elements movably mounted therein
  • first linkage means interconnecting said first handle with each of said first and second control elements for moving said first control element in response to movement of said first handle in a first direction and for moving said second control element in response to movement of said first handle in a second direction transverse to said first direction
  • a second lever control including a second handle, a third control having a third control element movably mounted therein, and
  • second linkage means interconnecting said second handle with said third control element for moving said third control element in response to movement of said second handle.
  • first and second handles are movably mounted on said support in close proximity to each other whereby they can be moved simultaneously.
  • said second linkage means comprises a rod, pivotally mounted on said support, having its first end pivotally attached to said second handle and its second end connected to said third control element.
  • the invention of claim 1 further comprising locking means for selectively locking said first and second handles in a fixed position.
  • said locking means comprises a plate member pivotally mounted on said support, means forming a pairof slots in said plate member and a lug secured to each of said first and second handles and positioned thereon to be received in a respective one of said slots when said plate member is pivoted thereon.
  • a lever control comprising a control valve having a control element movably mounted therein,
  • linkage means interconnecting said handle with said control element for moving said control element upon movement of said handle in a first direction, means pivotally mounting said handle to said linkage means, including at least one resilient bushing therein for continuously frictionally engaging said handle to hold it in a selected position of operation upon manipulation thereof, for permitting said handle to move said control element upon movement of said handle in said first direction and for permitting only said handle to move relative to said linkage means upon movement of said handle in a second direction, transverse to said first direction.
  • a lever control comprising a stationary support a control valve having a control element movably mounted therein, movable handle means operatively connected to said control element for selectively moving same, and
  • locking means for selectively locking said handle to said support comprising a plate member pivotally mounted on said support, means forming at least one slot in said plate member and a lug secured to said handle and positioned thereon to be received in said slot when said plate member is pivoted thereon.
  • a lever control comprising a control valve having a control element movably mounted therein, movable handle means operatively connected to said control element for selectively moving same,
  • said positioning means comprising at least one resilient bushing in said pivot means for continuously frictionally engaging said handle means.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Control Devices (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Arrangement Or Mounting Of Control Devices For Change-Speed Gearing (AREA)
  • Agricultural Machines (AREA)
  • Operation Control Of Excavators (AREA)
US00281515A 1972-08-17 1972-08-17 Dual lever control Expired - Lifetime US3795152A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US28151572A 1972-08-17 1972-08-17

Publications (1)

Publication Number Publication Date
US3795152A true US3795152A (en) 1974-03-05

Family

ID=23077626

Family Applications (1)

Application Number Title Priority Date Filing Date
US00281515A Expired - Lifetime US3795152A (en) 1972-08-17 1972-08-17 Dual lever control

Country Status (6)

Country Link
US (1) US3795152A (ja)
JP (1) JPS5723155B2 (ja)
BE (1) BE803746A (ja)
CA (1) CA975254A (ja)
DE (1) DE2341807C2 (ja)
GB (2) GB1437232A (ja)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4133218A (en) * 1977-08-26 1979-01-09 Caterpillar Tractor Co. Control apparatus
US4526204A (en) * 1982-05-17 1985-07-02 Dresser Industries, Inc. Control apparatus for hydraulic valve
US5110253A (en) * 1990-12-21 1992-05-05 Deere & Company Two-lever three function control mechanism
US5551265A (en) * 1995-04-28 1996-09-03 Caterpillar Inc. Restraint mechanism for a control lever
US5595091A (en) * 1995-04-28 1997-01-21 Caterpillar Inc. Restraint mechanism for a control lever
US6019133A (en) * 1996-07-12 2000-02-01 Riedel & Sohne oHG Cross lever valve control means
US6098491A (en) * 1998-10-27 2000-08-08 Caterpillar Inc. Control lever assembly with handle lock-out
EP1096357A2 (en) * 1999-10-29 2001-05-02 Deere & Company Multifunction control mechanism and vehicle with a control mechanism
US6502498B2 (en) 2001-04-23 2003-01-07 Caterpillar Inc Method and apparatus for lifting a work implement attached to a work machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1238422B (it) * 1989-12-22 1993-07-26 Fiat Auto Spa Gruppo di comando di una trasmissione a trazione integrale disinseribile per autovetture.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1454238A (en) * 1922-07-22 1923-05-08 Adam W Kaufman Friction-grip choke control
US1536645A (en) * 1922-11-03 1925-05-05 Joseph C Youngblood Carburetor control
US1556179A (en) * 1924-05-13 1925-10-06 George B Titman Combined choke and needle valve control
US2359392A (en) * 1942-04-28 1944-10-03 United Aircraft Corp Control device
US2900148A (en) * 1958-05-29 1959-08-18 William H Nickels Locking device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4845127U (ja) * 1971-10-04 1973-06-13

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1454238A (en) * 1922-07-22 1923-05-08 Adam W Kaufman Friction-grip choke control
US1536645A (en) * 1922-11-03 1925-05-05 Joseph C Youngblood Carburetor control
US1556179A (en) * 1924-05-13 1925-10-06 George B Titman Combined choke and needle valve control
US2359392A (en) * 1942-04-28 1944-10-03 United Aircraft Corp Control device
US2900148A (en) * 1958-05-29 1959-08-18 William H Nickels Locking device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4133218A (en) * 1977-08-26 1979-01-09 Caterpillar Tractor Co. Control apparatus
US4526204A (en) * 1982-05-17 1985-07-02 Dresser Industries, Inc. Control apparatus for hydraulic valve
US5110253A (en) * 1990-12-21 1992-05-05 Deere & Company Two-lever three function control mechanism
US5551265A (en) * 1995-04-28 1996-09-03 Caterpillar Inc. Restraint mechanism for a control lever
US5595091A (en) * 1995-04-28 1997-01-21 Caterpillar Inc. Restraint mechanism for a control lever
US6019133A (en) * 1996-07-12 2000-02-01 Riedel & Sohne oHG Cross lever valve control means
US6098491A (en) * 1998-10-27 2000-08-08 Caterpillar Inc. Control lever assembly with handle lock-out
EP1096357A2 (en) * 1999-10-29 2001-05-02 Deere & Company Multifunction control mechanism and vehicle with a control mechanism
EP1096357A3 (en) * 1999-10-29 2001-05-30 Deere & Company Multifunction control mechanism and vehicle with a control mechanism
US6502498B2 (en) 2001-04-23 2003-01-07 Caterpillar Inc Method and apparatus for lifting a work implement attached to a work machine

Also Published As

Publication number Publication date
GB1437232A (en) 1976-05-26
DE2341807C2 (de) 1983-03-10
JPS5723155B2 (ja) 1982-05-17
CA975254A (en) 1975-09-30
BE803746A (fr) 1974-02-18
DE2341807A1 (de) 1974-02-28
JPS4951495A (ja) 1974-05-18
GB1437231A (en) 1976-05-26

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Legal Events

Date Code Title Description
AS Assignment

Owner name: CATERPILLAR INC., A CORP. OF DE.,ILLINOIS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CATERPILLAR TRACTOR CO., A CORP. OF CALIF.;REEL/FRAME:004669/0905

Effective date: 19860515

Owner name: CATERPILLAR INC., 100 N.E. ADAMS STREET, PEORIA, I

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CATERPILLAR TRACTOR CO., A CORP. OF CALIF.;REEL/FRAME:004669/0905

Effective date: 19860515