US3566711A - Gate plate interlock - Google Patents

Gate plate interlock Download PDF

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Publication number
US3566711A
US3566711A US831916A US3566711DA US3566711A US 3566711 A US3566711 A US 3566711A US 831916 A US831916 A US 831916A US 3566711D A US3566711D A US 3566711DA US 3566711 A US3566711 A US 3566711A
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United States
Prior art keywords
lever
movement
control
plate
control lever
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Expired - Lifetime
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US831916A
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English (en)
Inventor
Dale F Leuenberger
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Boeing North American Inc
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North American Rockwell Corp
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G5/00—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member
    • G05G5/06—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member for holding members in one or a limited number of definite positions only
    • G05G5/08—Interlocking of members, e.g. locking member in a particular position before or during the movement of another 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
    • Y10T74/20012—Multiple controlled elements
    • Y10T74/20018—Transmission control
    • Y10T74/20073—Control of plural mechanisms [e.g., control of transmission and control of 4 - wheel drive]
    • Y10T74/20079—Separate control 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
    • Y10T74/20012—Multiple controlled elements
    • Y10T74/20018—Transmission control
    • Y10T74/20085—Restriction of shift, gear selection, or gear engagement
    • 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
    • Y10T74/20238—Interlocked

Definitions

  • a plurality of slidable locking plates are positioned with respect to the gate plate of a control box and are shaped so that effective operation can be achieved only through a selective and sequential movement of the two control levers which, in turn, provides selective and sequential movement of the locking plates.
  • This invention relates to an apparatus for assuring the fail-safe coordination of a plurality of controls. Where two controls are involved, for example, the subordinate control can be actuated only after the master control has been set in a position which is proper for the safe or desired operation of the subordinate control and conversely, the subordinate control can, at times, prohibit movement of the master control.
  • a prime example of such controls is found in many motor vehicles such as tractors, jeeps and the like which are provided with auxiliary controls in addition to the normal transmission control.
  • Typical of the accessories requiring auxiliary controls are power take-off systems for actuating devices somewhat remote from the vehicle, and/or front wheel drive systems. It is inherent with these accessories that their safe operation is possible only when the vehicles transmission is in a certain range. For example, power take-oft units should be energized only when the vehicle is at rest with the transmission in the neutral range; similiarly, front wheel drive features should be employed only when the transmission is in the low gear ranges. Accordingly, the auxiliary controls employed to regulate accessories such as these should preclude their actuation except when the transmission is operating within the proper range.
  • a master control such as a transmission lever
  • an apparatus constructed according to the concept of the present invention comprises a gate plate for a control box having at least two slots or guideways therein for directing passage of control levers therethrough in a primary, or longitudinal, direction to actuate control cables attached thereto.
  • the guideways also allow a certain amount of secondary, or lateral, movement to actuate a plurality of slidable locking plates.
  • the locking plates are provided with various shaped openings or slots therein which can be selectively aligned or misaligned with each other and with the slots of the gate plate through their sliding action.
  • the locking plates are further designed so that certain misalignments will prohibit the movement of at least one of the control levers until such time that another control lever has been moved to align the slots of the locking plates with a particular slot of the gate plate to create a free passageway for the previously locked control lever along the primary direciton of its guideway.
  • FIG. 1 is a top plan view of the control box embodying the principles of the present invention showing a gate plate for a transmission and two auxiliary controls, the auxiliary, or subordinate, control lever being shown locked in a disengaged position and the transmission, or master, control lever being free to move throughout the entire forward driving range;
  • FIG. 2 is a partially broken away, partially sectioned side elevation taken substantially along line 22 of FIG. 1;
  • FIG. 3 is a partially broken away, partially sectioned end elevation taken substantially along line 33 of FIG. 2;
  • FIG. 4 is a sectional view taken substantially along line 44 of FIG. 3;
  • FIG. 5 is a sectional view taken substantially along line 55 of FIG. 3;
  • FIG. 6 is an enlarged sectional view taken substantially along line 66 of FIG. 5;
  • FIG. 7 is an enlarged sectional view taken substantially along line 77 of FIG. 5;
  • FIG. 8 is an exploded perspective view of a typical gate plate and locking plates embodying the concepts of the present invention.
  • FIG. 9 is a partial top plan view similar to FIG. 1 with the components of the subject control sequentially positioned in response to movement of the master control lever from the position depicted in FIG. 1 to the position depicted herein, the gate plate being shown in solid lines, the upper locking plate being shown entirely in broken lines, and the lower locking plate shown entirely in chain dotted lines;
  • FIG. 10 is a top plan view similar to FIG. 9 with the first subordinate control lever actuated sequentially from the position depicted in FIG. 9;
  • FIG. 11 is a top plan view similar to FIG. 9 but depicting a different area of FIG. 1 and with the components of the subject control sequentially positioned in DESCRIPTION OF THE PREFERRED EMBODIMENT
  • a control box embodying the principles of the present invention is indicated generally by the numeral 20' in FIG. 1.
  • Control box 20 is depicted as having a gate plate 21 which, in the embodiment shown, has a transmission guideway slot 22, a power take-off guideway slot 23 and a front wheel drive guideway slot 24. Movably received within each of the gate plate guideways 22, 23 and 24 are control levers. 25, 26 and 27 respectively.
  • the gate plate 21 is clamped to the upper side of a control box housing 30 as by a plurality of screws 31 or other fastening means extending through a housing frame 30' and into housing 30.
  • the lower sides of housing 30 present laterally spaced spider-like mounting flanges 32.
  • Extending between the mounting flanges 32 and into hub portions 33 formed therein is an axle member 34 which is secured to the mounting flanges, as by bolts 35.
  • Axle 34 serves as the axis about which control levers 25, 26 and 27 and their respective mounting assemblies 36, 37, and 38 can pivot, levers 2'5, 26 and 27 moving in a primary direction longitudinally through slots 22, 23 and 24.
  • the mounting assemblies 36, 37 and 38 are maintained in a spaced relationship by annular spacer members 39 mounted on axle 34.
  • the control lever mounting assemblies 36, 37 and 38 are identical in structure so that the description thereof can be limited to one assembly, for example, the power take-off control lever mounting assembly 37 shown in FIG. 5.
  • Mounting assembly 37 comprises actuator plates 40 which embrace a split retainer 41.
  • the lower end of the hexagonally shaped control lever 26 is received within retainer 41, the lever having a pin 42 passing through the bottom thereof which is rotatably received in a bearing 43 formed when the two halves of retainer 41 are fastened together as by the bolts 44.
  • the lever can be pivoted around the pin in a secondary direction transverse to the direction of its primary, or longitudinal, movement.
  • the lever is shown in FIG. 6 as having been swung in the lateral, or secondary, direction.
  • Encasing lever 26 is a hexagonal frictional detent washer 45 having nipple-like protrusions 46 which frictionally engage the inner surface of a recess 47 formed within retainer 41.
  • Detent washer 45 serves, along with other structures to be hereinafter described, as a friction means to insulate the levers from vibration.
  • the actuator plates 40' are provided with a plurality of bores 48 which are circumferentially spaced about a central bore 49. Bores 48 are oriented such that selective pairs thereof can receive the screw connecting means 50 to fasten the plates 40 to the retainer 41 while maintaining the central bore 49 of the plate 40 in register with a bore 51 in retainer '41, the aligned bores 49 and 51 receiving a bushing 52 rotatably mounted on axle 34.
  • the plurality of bores 48 provides the mounting assembly 37 with a selective versatility of mounting angles and heights. In the example shown in FIG. 5, the retainer 41 and actuator plates 40 are in alignment. However, it is evident 4 that by choosing a different pair of bores 48, the angularity in either direction could be varied through a wide range.
  • control lever 26 is capable of dual movement, primary movement about the axis of axle 34 and secondary movement about the axis of pin 42.
  • Primary movement of the control lever 26 moves the actuator plate 40 but secondary movement of the control lever 2-6 can be effected without movement of the actuator plate 40-.
  • This interrelation between the movement of the control lever and the responsive movement of the actuator plates is utilized to actuate the interlock mechanism disclosed in the preferred embodiment of the subject invention, as is hereinafter more fully described.
  • the push-pull cables 60 may be of any conventional construction having a core 61 slidable within a casing 62 formed of a sheath of wires 63 continuously laid, in the form of a long pitch helical coil, about the radially outer surface of a plastic tube 64 which extends the full length of casing 62.
  • One end of the core 61 is connected to a control rod 65 which telescopes within one end of a sleeve 66 and which is also threaded into a coupler 67 that is swingably connected, as by pin 68, to the mounting assembly so that movement of the control levers 25, 26 and 27 in the primary direction will effect corresponding movement to the cores in each of the respective cables 60A, 60B and 60C.
  • push-pull cable 60A is operatively connected to a front wheel drive mechanism
  • pushpull cable 60B is operatively connected to the transmission
  • push-pull cable 60C is operatively connected to a power take-off mechanism.
  • Resilient sealing sleeves 69 and 70 may be provided at the joint between the sleeve 66 and the control rod 65 and at the joint between the sleeve 66 and the casing 62, respectively, to maintain the interior of the cable 60 as clean and dry as possible.
  • two cable hangers 71 In order conveniently to mount the cable 60, two cable hangers 71, L-shaped in cross section, are provided, one hanger 71 being mounted to each of the mounting flanges 32 of housing 30.
  • the mounting flanges 32 are provided with a plurality (six shown) of mounting bores 72 selective pairs of which can be aligned with two bores in hangers 71 to be fastened by bolts 73 as shown in FIG. 2.
  • This feature adds further versatility to the unit by permitting, as shown in the chain lines of FIG. 2, the cable hangers 71 to be oriented in a selective plurality of directions, as may be occasioned by the location of the remote device to be controlled by cables or as may be required by the space requirements in the location where the control 20 is mounted.
  • FIGS. 2 and 4 The actual mounting of the cables 60* to the hangers 71 is best shown in FIGS. 2 and 4.
  • An L-shaped cable support 74 spans the distance between the two hangers 71 and is provided with suitable bores so that one or more of the cables 60 can be fastened thereto by the use of brackets 75 secured by bolts 76 and nuts 77.
  • gate plate 21 contains two or more, and, as shown, three guideway slots 22, 23 and 24 in which control levers 25, 26 and 27 are movable.
  • On each side of the transmission guideway slot 22 is a numbered and lettered transmission guide 101 which, in this instance, indicates that the transmission under discussion is automatic, having six forward speeds embodied in four ranges, a neutral (N) and a reverse (R) position.
  • Guideway slot 22 is shown as including four stop lugs 102, 103, 104 and 105 which impede movement of the master, the direct longitudinal or transmission, control lever in its primary direction andserve to provide places in which to register lever 25 in neutral, the 3-6 gear range, the 3-5 gear range, and the 3-4 gear range, respectively.
  • the upper end wall 106 of slot 22, as seen in FIG. 1, serves as the registry point for the reverse range and the lower end wall 107 as the stop point for the 1-2 gear range. It is thus evident that if one would desire to shift the transmission lever 25 longitudinally from the 3-6 position shown in FIG. 1 to, for example, the 1-2 gear range at point 107, he would be forced to move lever 22 in a snake-like fashion employing not only the primary but also the secondary permissive movement features previously described.
  • the power take-ofi guideway slot 23 may be located generally in the upper-left portion of gate plate 21, as seen in FIG. 1, and has the configuration of an inverted L to provide at least two basic positions: the disengaged position, the lever 26 being located in the short leg 111 of the L; and, the engaged position, the lever being located in the long leg 112 remotely of the short leg 111.
  • the engaged position is designated by the letters ENG. on plate 113.
  • the front wheel drive guideway slot 24 may be located generally toward the lower-right portion of gate plate 21, as seen in FIG. 1, and is also L-shaped to provide a disengaged position in the short leg 114 of the L and an engaged position in the long leg 115 of the L. Again, the engaged position is designated by a guide plate 116 hearing the letters ENG.
  • both power take-off lever 26 and front wheel drive lever 27 utilize their dual movement capability when being moved from disengaged to engaged position.
  • the upper plate 120 includes a T-shaped slot 121 having a left-hand branch 122 bounded on one side by a tab portion 123 and a right-hand branch 124 bounded by a blocking edge portion 125A on tab 125.
  • a deep recess 126 has its two sides defined by a throw edge portion 125B on tab 125 and a throw edge portion 127A on lug 127. Lug 127 also bounds one side of a larger U-shaped recess 128 bounded on its other side by tab portion 129.
  • the lower power take-off locking plate 130 has a deep slot 131 laterally bounded by the long tab 132 having throw edge portion 132A, and by the blocking edge portion 133B on lug 133.
  • the locking plate 130 also has an irregularly outlined recess 135 comprised of a deep bay portion 135A, a shallow bay portion 135B and a bay portion 135C of intermediate depth.
  • the intermediate bay portion 135C is bounded on one side by a blocking edge portion 133A on lug 133 and is adjacent the deep bay portion 135A that is bounded by edge 136 generally parallel to and spaced apart from the blocking edge portion 133A.
  • the shallow bay portion 135B is adjacent the deep bay portion 135A on the side opposite the intermediate bay portion 135C and is bounded by surface 138 and tab member 139.
  • Upper front wheel drive locking plate 140 Located beneath gate plate 21 so as to be cooperatively positionable with at least a portion of the transmission guideway slot 22 and the front wheel drive guideway slot 24 is an upper front wheel drive locking plate 140 and a lower front wheel drive locking plate 150.
  • Upper plate 140 includes a T-shaped slot 141 having a branch 142 bounded on one side by a hook 143 and a branch 144 bounded on one side of a blocking edge portion 145A on hook 145.
  • a recess 146 has a long leg 147 and a contiguous short leg 148. Long leg 147 is bounded on one side by throw edge portion 1458 on hook 145 and on the other side by throw edge portion 149.
  • the lower, front wheel drive, locking plate 150 has a 6 slot 151, the sides of which are defined by a throw edge portion 152A on tab 152 and a throw edge surface 153B on tab 153.
  • a blocking edge portion 153A on tab 153 also defines one boundary of an L-shaped recess 154 having a short leg 155 and a longer leg 156 bounded on the longer side by surface 157.
  • the locking plates 120, 130, 140 and 150 are mounted in such a fashion that they are capable of a sliding movement only in a direction parallel to the secondary direction in which the various control levers are movable.
  • locking plates 140 and 150 are supported between longitudinally spaced steps 161 and 162 presented from the housing 30.
  • plate 140 is restrained against movement in a direction parallel to that of the primary movement of the control levers by the vertical stop shoulder 163 of steps 161 and by the spaced, substantially parallel stop shoulder 164 of steps 162.
  • plate 150 is restrained by stop shoulder 165 of steps 161 and by stop shoulder 166 of steps 162.
  • plates 120 and 130 are similarly mounted on steps, such as those designated by numeral 167 in FIG. 5.
  • the plates 120, 130, 140 and 150 are prohibited from moving in a direction parallel to the longitudinal orientation of guideways 22, 23, and 24.
  • the locking plates must be capable of movement in a direction parallel to the lateral movement of the control levers.
  • the steps also present shelves on which the locking plates are slidable.
  • the shelves for locking plates 120 and 130 are best shown in FIGS. 3 and 5, the end of plate 120 being slidable (left to right, as viewed in FIG. 3) on shelf 168 and plate 130 slidable on shelf 169.
  • locking plates 140 and 150 are slidably mounted on similar shelves 170 and 171, respectively.
  • the locking plates are slidably mounted it is important to keep them from moving accidently due to any possible vibratory movement of the vehicle.
  • Accidental translation of the locking plates may be prevented by a plurality of spring biased detents 172, 173, 174 and 175.
  • the detents are threaded through bosses 176 and 177 in the frame 30 of housing 30 that extend through the gate plate 21 and present a spring biased plunger nose 178 selectively receivable in one of a plurality of lock holes 179 located in plates 120, 130, 140 and 150.
  • plate 140 is being held in place by detent 172, plunger nose 178 resting in lock hole 179A.
  • Plates 130 and 150 are also held in place by detents 174 and 175 respectively. However, since plates 130 and 150 are lower locking plates, the detents 174 and 175 must pass through the upper plates 120 and 140, respectively. To accommodate access of detents 174 and 175 to plates 130 and 150, the upper plates 120 and 140 are provided with apertures 180.
  • the plates are oriented such that the transmission lever 25 is permitted to move within the entire forward drive range, lever 25 being shown in the 3-6 driving range and positioned in proximity to stop lug 102.
  • the reverse and a portion of the neutral range are blocked out by lug 127 of upper locking plate 120.
  • the power take-off lever 26 is shown in the short leg 111 of the guideway 23i.e., with the power take-off disengaged-and with the entire long leg 112 of slot 23 being blocked by the longer leg of lug 133 on lower locking plate 130 and with the blocking edge portion 125A on tab 125 of the upper locking plate 120 being positioned across the long leg 112 of guideway 23 at the juncture thereof with short leg 111.
  • levers 25 and 26, and plates 120 and 130' are in the abovedescribed positions, it is not possible for the power take-off lever 26 to be moved from the disengaged position in leg 111 to the engaged position in leg 112. If, for example, the operator would attempt to engage the power take-off system with the master control lever 25 in any of the forward drive ranges, secondary movement of subordinate control lever 26 against throw edge portion 133B would slide lower plate 130 to the right, as seen in FIG. 1, thus clearing the lug 133 from leg 112 of guideway slot 23; however, movement of the subordinate control lever 26 in the primary direction would be prohibited by the blocking edge portion 125A of lug 125 on upper locking plate 120.
  • the master transmission lever 25 In order to free the subordinate power take-off lever 26 for engagement, the master transmission lever 25 must be moved from the position shown in FIG. 1, around stop lug 102, and to the right-hand neutral range (as seen in FIG. 9). This movement brings lever 25 against throw edge portion 127A so that the secondary movement of lever 25 slides the upper plate 120 to the right and thereby removes tab 125 from the path of the subordinate power take-off lever 26. Now the operator is able to move lever 26 in its secondary direction to slide locking plate 130 out of its path, and then down (as seen in FIG. 10) into leg 112 of guideway 23 to engage the power take-off mechanism.
  • Flange 181 does not, however, totally block the reverse range, because, in the event that the gearing of the power take-off mechanism would not mesh, it is highly desirable to be able to adjust the position of the power gears in the transmission to facilitate engaging the power take-off. By being able to jiggle the master control lever 25 slightly into the reverse range this result is effected.
  • the transmission lever 25 in order for the front wheel drive lever 27 to be freely movable along leg of guideway 24, the transmission lever 25 must first be moved from the position shown in FIG. 1 to that shown in FIG. 11. In so doing, lever 25 will contact throw edge 149 of plate so that movement of the master control lever 25 in a secondary direction will slide locking plate 140 to the left (as seen in FIG. 11). This movement of plate 140 removes blocking hook from guideway 24. Now the operator is able to move lever 27 in a secondary direction within leg 114 and then in a primary direction along leg 115 to engage the front wheel drive (FIG. 12).
  • Movement of the subordinate control lever 27 in a secondary direction along leg 114 of guideway 24 brings lever 27 into engagement with the throw edge portion 153B on tab 153 and slides the locking plate to the left as viewed in the drawingsi.e., from the position depicted in FIG. 11 to the position depicted in FIG. 12.
  • This sliding movement of locking plate 150 positions the blocking edge portion 153A on tab 153 in cooperative interaction with guideway 22 to restrict the master control lever 25 against movement in a primary direction out of the low, 1-2, drive range (FIG. 12).
  • This restriction of the master control lever 25 to the low, 1-2, drive range can be cleared only when the subordinate control lever 27 is returned to the short leg 114 of guideway 24.
  • Biasing system 185 is shown as consisting of a spring 186 mounted between an eyelet 188 on the plate 40 and an eyelet 189 on the control lever 26. Although not shown, a similar system can be utilized with respect to lever 27.
  • subordinate control levers to actuate power take-off and front wheel drive accessories and their interrelation with the primary transmission control lever have been separately described to point out that they are separate systems capable of operation independently of each other.
  • a control system could be supplied with any number of subordinate controls to be used in combination with one or more master controls and the requisite number of locking plates without departing from the spirit of the present invention.
  • the respective locking plates must also have recesses, tabs, and the like in the proper position not only to interlock but also to permit interference free operation of controls when the prescribed conditions for their operation is satisfied.
  • the U-shaped recess 128 will always maintain the front wheel drive guideway 24 in an open position.
  • the shallow bay portion 135B of recess 135 in lower plate 130 serves to perform the same function.
  • Recess 190 is provided so that should lower locking plate 130 be inadvertently moved to the right when the master control lever 25 is in the 3-4 range, the tab 133 will not cooperatively interact with stop lug 104 to prevent movement of the master control lever from the 34 range into the 35 range and even on to neutral.
  • a fail-safe interlock for a control comprising, a housing, a gate plate secured to said housing, at least master and subordinate control levers mounted within said housing for movement through a primary direction and a secondary direction laterally of said primary direction, individual guideways in said gate plate for each said control lever, said guideways delineating the range of said primary and secondary directions, at least first and second locking plates movably mounted in said housing, each said locking plate having a throw portion and a blocking portion, the blocking portion on said first plate positionable in cooperation with the guideway for said subordinate control lever to restrict the movement of said subordinate control lever along its primary direction, the throw portion of said first locking plate positioned to be engaged by secondary movement of said master control lever at a predetermined position along the range of its primary movement, engagement of said master control lever with the throw portion of said first locking plate moving said first locking plate to eliminate the cooperative interaction of the blocking portion thereon with the guideway for said subordinate control lever, the blocking portion on said second locking plate positionable in cooperation with the guideway for said master control lever to restrict said master
  • a fail-safe interlock according to claim 1 wherein said first locking plate has a second throw portion positioned to be engaged by secondary movement of said master control lever at a predetermined position along the range of its primary movement, engagement of said master control lever with said second throw portion of said first locking plate moving said first locking plate to position the blocking portion thereof in cooperative interaction with the guideway for said subordinate control lever to restrict movement of said subordinate control lever along its primary direction.
  • a device for assuring the fail-safe coordination of remote control systems having at least two controls comprising, a control lever for each control, a gate plate having guideway slots therein slidably receiving and directing said control levers, said guideway slots adapted to allow movement of said control levers both in a primary direction to actuate the remote control systems and in a secondary direction, and a plurality of locking plates operatively positioned with respect to said gate plate and shaped to selectively prohibit the movement of said control levers through the guideway slots, said locking plates being slidable in the secondary direction so that movement of said control levers in the secondary direction through said guideway slots can selectively slide said locking plates.
  • a device wherein said locking plates are positioned below said gate plate and have at least one slot therein to be selectively aligned or misaligned with said guideway slots.
  • a device wherein a first of said control levers operates a transmission control having a neutral, drive and reverse range, and a second of said control levers operates a power take-off system, said locking plates being shaped so that said second control lever cannot be moved within its said guideway slot in the primary direction for engagement unless said first control lever is in the neutral range.
  • a device having a transmission control lever, a power take-off control lever, and a front wheel drive control lever, said power take-olf and front wheel drive control levers being capable of actuation independently of each other but dependent upon the position of said transmission control lever.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Control Devices (AREA)
  • Transmission Devices (AREA)
  • Transmissions By Endless Flexible Members (AREA)
  • Structure Of Transmissions (AREA)
  • Arrangement Or Mounting Of Control Devices For Change-Speed Gearing (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Control Of Transmission Device (AREA)
US831916A 1969-06-10 1969-06-10 Gate plate interlock Expired - Lifetime US3566711A (en)

Applications Claiming Priority (1)

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US83191669A 1969-06-10 1969-06-10

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US3566711A true US3566711A (en) 1971-03-02

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US831916A Expired - Lifetime US3566711A (en) 1969-06-10 1969-06-10 Gate plate interlock

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US (1) US3566711A (enrdf_load_stackoverflow)
JP (1) JPS5012653B1 (enrdf_load_stackoverflow)
BE (1) BE751701A (enrdf_load_stackoverflow)
CA (1) CA927247A (enrdf_load_stackoverflow)
DE (1) DE2028048C3 (enrdf_load_stackoverflow)
FR (1) FR2050083A5 (enrdf_load_stackoverflow)
GB (1) GB1296611A (enrdf_load_stackoverflow)
NL (1) NL7008052A (enrdf_load_stackoverflow)
SE (1) SE364576B (enrdf_load_stackoverflow)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3858695A (en) * 1974-02-06 1975-01-07 Deere & Co Transmission and brake interlock
JPS5236330U (enrdf_load_stackoverflow) * 1975-09-08 1977-03-15
US4120005A (en) * 1976-03-10 1978-10-10 Sony Corporation Mode selecting device for tape recording and/or reproducing apparatus
DE2938640A1 (de) * 1978-09-28 1980-04-10 Deere & Co Schaltsteuereinrichtung fuer hydromechanische getriebe, insb. fuer ackerschlepper o.ae. nutzfahrzeuge
US4462273A (en) * 1980-12-05 1984-07-31 Kubota, Ltd. Change-speed apparatus for a tractor
USD281409S (en) 1983-01-10 1985-11-19 Hurst Performance, Inc. Shift control lever unit
US20070068328A1 (en) * 2005-08-31 2007-03-29 Honda Motor Co., Ltd. Control lever system
US7533755B2 (en) * 2004-09-17 2009-05-19 Kawasaki Jukogyo Kabushiki Kaisha Shift-lever device for a vehicle
US20100122601A1 (en) * 2008-11-20 2010-05-20 Gm Global Technology Operations, Inc. Pinch bolt mounting of a shifter assembly

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3858695A (en) * 1974-02-06 1975-01-07 Deere & Co Transmission and brake interlock
JPS5236330U (enrdf_load_stackoverflow) * 1975-09-08 1977-03-15
US4120005A (en) * 1976-03-10 1978-10-10 Sony Corporation Mode selecting device for tape recording and/or reproducing apparatus
DE2938640A1 (de) * 1978-09-28 1980-04-10 Deere & Co Schaltsteuereinrichtung fuer hydromechanische getriebe, insb. fuer ackerschlepper o.ae. nutzfahrzeuge
US4228879A (en) * 1978-09-28 1980-10-21 Deere & Company Tractor transmission shift control
US4462273A (en) * 1980-12-05 1984-07-31 Kubota, Ltd. Change-speed apparatus for a tractor
USD281409S (en) 1983-01-10 1985-11-19 Hurst Performance, Inc. Shift control lever unit
US7533755B2 (en) * 2004-09-17 2009-05-19 Kawasaki Jukogyo Kabushiki Kaisha Shift-lever device for a vehicle
US20070068328A1 (en) * 2005-08-31 2007-03-29 Honda Motor Co., Ltd. Control lever system
US7770485B2 (en) * 2005-08-31 2010-08-10 Honda Motor Co., Ltd. Control lever system
US20100122601A1 (en) * 2008-11-20 2010-05-20 Gm Global Technology Operations, Inc. Pinch bolt mounting of a shifter assembly
US8172031B2 (en) * 2008-11-20 2012-05-08 GM Global Technology Operations LLC Pinch bolt mounting of a shifter assembly

Also Published As

Publication number Publication date
FR2050083A5 (enrdf_load_stackoverflow) 1971-03-26
SE364576B (enrdf_load_stackoverflow) 1974-02-25
DE2028048B2 (de) 1978-06-29
JPS5012653B1 (enrdf_load_stackoverflow) 1975-05-13
DE2028048A1 (de) 1970-12-23
GB1296611A (enrdf_load_stackoverflow) 1972-11-15
NL7008052A (enrdf_load_stackoverflow) 1970-12-14
BE751701A (fr) 1970-11-16
CA927247A (en) 1973-05-29
DE2028048C3 (de) 1979-02-15

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