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Publication numberUS3768328 A
Publication typeGrant
Publication dateOct 30, 1973
Filing dateApr 10, 1972
Priority dateApr 10, 1972
Also published asCA972661A1, DE2317667A1
Publication numberUS 3768328 A, US 3768328A, US-A-3768328, US3768328 A, US3768328A
InventorsCampbell T
Original AssigneeCaterpillar Tractor Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Multi-movement single lever control
US 3768328 A
Abstract
A single lever control comprises a tubular bellcrank pivotally mounted on a stationary support and a handle pivotally mounted to a first arm of the bellcrank. A connecting rod is universally connected to the handle and extends through the bellcrank for attachment to the stem of a first control valve. A second arm of the bellcrank is pivotally connected to the stem of a second control valve whereby the handle may be actuated to selectively actuate the first control valve and/or the second control valve.
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Description  (OCR text may contain errors)

United States Patent Campbell 1 Oct. 30, 1973 [54] MULTll-MOVEMENT SINGLE/LEVER 2,951,393 9/1960 Schroeder et al 74/471 R CONTROL 3,184,989 5/1965 Rhodes 74/471 R Trevor G. Campbell, Peoria, Ill.

Assignee: Caterpillar Tractor Co., Peoria, 111.

Filed: Apr. 10, 1972 Appl. No.: 242,307

Inventor:

[1.8. CI 74/471 XY, 74/471 R, 74/473 R, l37/636.4

Int. Cl G05g 9/04 Field of Search 74/471 XY, 471 R, 74/473 R; 244/83 C, 83 R, 85; 137/6364 References Cited 7 UNITED STATES PATENTS 2/1972 Galas 74/473 R 12/ 1968 Dangauthier 3/1959 Rush 74/471 R Primary ExaminerCharles J. Myhre Assistant Examiner-F. D. Shoemaker AtmrneyPaul S. Lempio ABSTRACT A single lever control comprises a tubular bellcrank pivotally mounted on a stationary support and a handle pivotally mounted to a first arm of the bellcrank. A connecting rod is universally connected to the handle and extends through the bellcrank for attachment to the stem of a first control valve. A second arm of the bellcrank is pivotally connected to the stem of a second control valve whereby the handle may be actuated to selectively actuate/the first control valve and/ or the second control valve.

11 Claimsf l Drawing Figure 1 MULTI-MOVEMENT SINGLE LEVER CONTROL BACKGROUND OF THE INVENTION lever are normally bulky, complex and expensive to manufacture and service.

SUMMARY OF THE INVENTION An object of this invention is to .provide a compact, non-complex and economical single lever control adapted for multi-movements to actuate two or more control valves therewith.

The single lever control comprises a stationary support having a bellcrank pivotally mounted thereon for pivotal movement about a first axis. The bellcrank comprises first and second arms extending therefrom and a handle pivotally mounted on the first arm for pivotal movement about a second axis which is disposed transversely relative to the first axis. A connecting rod is pivotally connected to the handle and extends in the general direction of the first axis for attachment to the control element of a first control valve whereas the second arm is adapted for attachment to the control element of a second control valve. Pivotal movement of the handle about the second axis will function to reciprocate the connecting rod in the direction of the first axis to actuate the first control valve whereas pivotal movement of the handle about the first axis will function to actuate the second control valve.

BRIEF DESCRIPTION OF THE DRAWING Further objects of this invention will become apparent from the following description and accompanying drawing which is an isometric view of a single lever control embodying this invention.

DETAILED DESCRIPTION 'The drawing illustrates a single lever control comprising a stationary support, including spaced support brackets 11, mounted in the operators cab of a wheel loader, for example. A tubular bellcrank 12 is pivotally mounted on the support brackets for oscillatory movement about an axis X. The bellcrank has longitudinally spaced first and second arms 13 and 14, respectively, extending therefrom in at least approximate perpendicular relationship with respect to 'each other.

A handle 15 is pivotally mounted to first arm 13 of the bellcrank by a pin 16 for oscillatory movement about a second axis Y, preferably. disposed perpendicular to first axis X. Arms 13 and 14 extend in the general direction of the first and second axes, respectively. The handle comprises a clevis 17, having its lower bifur cated end pivotally mounted on first arm 13 by pin 16.

An extension 18, secured to the clevis to extend away therefrom in the general direction of first axis X, has a hand lever 19 secured thereon to be selectively moved by an operator. A connecting rod 20 is connected at a universal ball and socket connection 21 to clevis 17 of the control arm and extends through bellcrank 12 in general alignment with axis X. The opposite end of the connecting rod is pivotally connected to a control element 22 of a first control valve 23 by first linkage means 24.

The first linkage means comprises a bellcrank 25 pivotally mounted on the stationary support by a pivot pin 26. The bellcrank comprises a first arm 27 pivotally connected to rod 20 by a pin 28 and a second arm 29 pivotally connectedto a link 30. The link is pivotally interconnected between arm 29 and control element 22 by pins 31 and 32, respectively.

Second linkage means 34 pivotally interconnects sec- 'ond arm 14 and a control element 35 of a second control valve 36. The second linkage means comprises a universal ball and socket connection 37 connecting arm 14 to a single link 38. A pivot pin 39, in turn, connects the lower, clevis end of the link to control element 35.

In operation, the operator may pivot control lever 19 in the illustrated A direction to reciprocate connecting rod 20 in the general direction of axis X to actuate con- 7 moved in a compound direction to move both control elements 22 and 35 simultaneously, if so desired. Control elements or stems 22 and 35 may be suitably connected to valve spools or the like which function in a conventional manner to selectively communicate hydraulic fluid through the respective valves.

What is claimed is:

1. A single lever control comprising a stationary support,

a bellcrank, having first and second arms extending therefrom, pivotally mounted on said support for pivotal movement about a first axis,

a handle pivotally mounted to said first arm for pivotal movement about a second axis disposed transversely relative to said first axis,

a connecting rod pivotally connected to said handle and extending in the general direction of said first axis and first and second control valves each having a control element reciprocally mounted therein, first linkage means pivotally interconnecting said connecting rod and the control element of said first control valve and second linkage means pivotally interconv necting said second arm and the control element of said second control valve.

2. The invention of claim 1 wherein said first and second arms are longitudinally spaced on said bellcrank in at least approximate perpendicular relationship with respect to each other.

3. The invention of claim 2 wherein said first and second arms extend in the general direction of saidfirst and second axes, respectively. a

4. The invention of claim 1 wherein said bellcrank is tubular and said connecting rod extends therethrough.

5. The invention of claim 1 wherein said handle comprises a clevis pivotally connected to said first arm, an extension cantilevered on said clevis to extend away therefrom in the general direction of said first axis and a hand lever secured to said extension.

6. The invention of claim 1 wherein said connecting rod is universally connected to said handle and wherein said first linkage means comprises a bellcrank pivotally mounted on said support and having first and second arms thereof pivotally connected to said connecting rod and to the control element of said first control valve, respectively.

7. The invention of claim 6 wherein said first linkage means further comprises a link pivotally interconnected between said last-mentioned second arm and the control element of said first control valve.

8. The invention of claim 1 wherein said second linkage means comprises a single link pivotally interconnected between said second arm and the control element of said second control valve.

9. A single lever control comprising a stationary support,

a bellcrank, having first and second arms extending therefrom, pivotally mounted on said support for pivotal movement about a first axis,

a handle pivotally mounted to said first arm for pivotal movement about a second axis disposed transversely relative to said first axis, and

a connecting rod pivotally connected to said handle and extending in the general direction of said first axis,

said first and second arms being longitudinally spaced on said bellcrank in at least-approximately perpendicular relationship with respect to each other and extending in the general direction of said first and second axis, respectively.

10. A single lever control comprising a stationary support,

a tubular bellcrank, having first and second arms extending therefrom, pivotally mounted on said support for pivotal movement about a first axis,

a handle pivotally mounted to said first arm for pivotal movement about a second axis disposed transversely relative to said first axis, and

a connecting rod pivotally connected to said handle and extending through said bellcrank in the general direction of said first axis.

11. A single lever control comprising a stationary support,

a bellcrank, having first and second arms extending therefrom, pivotally mounted on said support for pivotal movement about a first axis,

a handle pivotally mounted to said first arm for pivotal movement about a second axis disposed transversely relative to said first axis, said handle comprising a clevis pivotally connected to said first arm, an extension cantilevered on said clevis to extend away therefrom in the general direction of said first axis and a hand lever secured to said extension, and

a connecting rod pivotally connected to said handle and extending in the general direction of said first axis.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2877660 *Jun 11, 1956Mar 17, 1959Shannon K ClementsSingle actuator for a plurality of control devices
US2951393 *Nov 18, 1957Sep 6, 1960Allis Chalmers Mfg CoMultiple control mechanism
US3184989 *Dec 31, 1962May 25, 1965Caterpillar Tractor CoControl lever holding means
US3417634 *Jan 31, 1967Dec 24, 1968Publicite FrancaiseControl device for an automobile gear-box
US3645145 *Nov 3, 1970Feb 29, 1972PeugeotControl device for a transmission
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4028958 *Aug 14, 1975Jun 14, 1977The Charles Machine Works, Inc.Single lever control for actuating control valves and the like
US4067546 *Oct 22, 1975Jan 10, 1978Kabushiki Kaisha Komatsu SeisakushoOperating device for winch control valves
US4112976 *Jan 21, 1977Sep 12, 1978Massey-Ferguson Services N.V.Improvements in or relating to controls for hydraulic valves
US4135592 *Jun 15, 1977Jan 23, 1979Trelleborgs Gummifabriks AktiebolagFour-wheel-drive articulated frame steering vehicle
US4256144 *Sep 29, 1978Mar 17, 1981Fiat-Allis Macchine Movimetno Terra S.P.A.Lever control for hydraulic control circuits
US4314619 *Aug 17, 1979Feb 9, 1982Kubota, Ltd.Operating device for swivel working vehicle
US4321980 *Jul 14, 1980Mar 30, 1982J. I. Case CompanyMono stick assembly with adjustable creep control
US4523488 *Nov 5, 1982Jun 18, 1985Allis-Chalmers Corp.Single lever control device for multiple functions
US4553448 *Jun 2, 1983Nov 19, 1985J. I. Case CompanyDual-rate control assembly
US5052239 *Aug 18, 1989Oct 1, 1991Suzuki Jidosha Kogyo Kabushiki KaishaTransmission assembly for the use in vehicles
US5063810 *Jun 19, 1990Nov 12, 1991Suzuki Jisoshi Kogyo Kabushiki KaishaShift mechanism
US5112184 *Jun 11, 1990May 12, 1992Reach AllMulti-function hydraulic control handle
US5149023 *Jul 12, 1991Sep 22, 1992The Boeing CompanyMechanically-linked side stick controllers with isolated pitch and roll control movement
US5934146 *Mar 9, 1998Aug 10, 1999Automobiles PeugotDevice for controlling the transmission of an automobile
US7219572 *May 15, 2003May 22, 2007Kabushiki Kaisha Tokai Rika Denki SeisakushoShift device
US7293480Aug 18, 2003Nov 13, 2007Kabushiki Kaisha Tokai Rika Denki SeisakushoShifting device
US7650811Sep 7, 2007Jan 26, 2010Kabushiki Kaisha Tokai Rika Denki SeisakushoShifting device
DE2934188A1 *Aug 23, 1979Mar 27, 1980Kubota LtdBedienungsvorrichtung fuer ein mit einer schwenkeinrichtung ausgestattetes fahrzeug
EP0522623A2 *Jun 19, 1992Jan 13, 1993The Boeing CompanyMechanically-linked side stick controllers with isolated pitch and roll control movement
EP1655200A2Oct 27, 2005May 10, 2006Eaton CorporationOperator control device
Classifications
U.S. Classification74/471.0XY, 74/473.33, 137/636.4, 74/471.00R
International ClassificationG05G9/047, G05G9/00, F16K31/44
Cooperative ClassificationG05G2009/04714, G05G9/047
European ClassificationG05G9/047
Legal Events
DateCodeEventDescription
Jun 12, 1986ASAssignment
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
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CATERPILLAR TRACTOR CO., A CORP. OF CALIF.;REEL/FRAME:004669/0905
Owner name: CATERPILLAR INC., A CORP. OF DE.,ILLINOIS