GB920680A - Improvements in or relating to fork-lift trucks - Google Patents

Improvements in or relating to fork-lift trucks

Info

Publication number
GB920680A
GB920680A GB38485/61A GB3848561A GB920680A GB 920680 A GB920680 A GB 920680A GB 38485/61 A GB38485/61 A GB 38485/61A GB 3848561 A GB3848561 A GB 3848561A GB 920680 A GB920680 A GB 920680A
Authority
GB
United Kingdom
Prior art keywords
motor
effected
operate
short circuiting
resistors
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
GB38485/61A
Inventor
Jack Hauxwell
Basil Haden-Scott
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.)
Ransomes Sims and Jeffries Ltd
Original Assignee
Ransomes Sims and Jeffries Ltd
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 Ransomes Sims and Jeffries Ltd filed Critical Ransomes Sims and Jeffries Ltd
Priority to GB38485/61A priority Critical patent/GB920680A/en
Priority to DER31654A priority patent/DE1293041B/en
Priority to CH88262A priority patent/CH394037A/en
Publication of GB920680A publication Critical patent/GB920680A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
    • G05G1/30—Controlling members actuated by foot
    • G05G1/36—Mounting units comprising an assembly of two or more pedals, e.g. for facilitating mounting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/07509—Braking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/07572—Propulsion arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/20—Means for actuating or controlling masts, platforms, or forks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/20—Means for actuating or controlling masts, platforms, or forks
    • B66F9/24—Electrical devices or systems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/03—Arrangements for regulating or controlling the speed or torque of electric DC motors for controlling the direction of rotation of DC motors

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Power Engineering (AREA)
  • Control Of Direct Current Motors (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Abstract

920,680. Controllers; control of D.C. motors. RANSOMES SIMS & JEFFERIES Ltd. Oct. 27, 1961, No. 38485/61. Class 38 (3). The battery powered traction motor of a fork lift truck is controlled in both speed and direction by a single pedal 25. This has a tiltable plate 45 biased to one side to give forward movement ; pressure on the other side against the bias operates a microswitch 57 for reverse. Acceleration is effected by normal depression of the whole pedal, which motion is transmitted hydraulically to a push-rod 73 which, as shown, is connected to a master drum controller 87. The motor is series wound, reversal is effected by changing the field connections and four speeds are obtained by first inserting two series resistors, then short circuiting one, next connecting them in parallel with each other and finally short circuiting both. An interlock switch prevents energization of the motor until the vehicle brakes have been released. It is stated that alternatively the push rod 73 could operate a carbon pile resistor, insert diverter resistors across the motor field, or operate an electronic voltage or current controlling device in the motor circuit.
GB38485/61A 1961-10-27 1961-10-27 Improvements in or relating to fork-lift trucks Expired GB920680A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB38485/61A GB920680A (en) 1961-10-27 1961-10-27 Improvements in or relating to fork-lift trucks
DER31654A DE1293041B (en) 1961-10-27 1961-12-09 Pedal control for forklifts
CH88262A CH394037A (en) 1961-10-27 1962-01-24 Forklift

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB38485/61A GB920680A (en) 1961-10-27 1961-10-27 Improvements in or relating to fork-lift trucks

Publications (1)

Publication Number Publication Date
GB920680A true GB920680A (en) 1963-03-13

Family

ID=10403766

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38485/61A Expired GB920680A (en) 1961-10-27 1961-10-27 Improvements in or relating to fork-lift trucks

Country Status (3)

Country Link
CH (1) CH394037A (en)
DE (1) DE1293041B (en)
GB (1) GB920680A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1980002483A1 (en) * 1979-05-08 1980-11-13 Eaton Ltd Directional control system

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4178518A (en) * 1978-06-29 1979-12-11 Caterpillar Tractor Co. Electronic directional control circuit
DE19625501C2 (en) * 1996-06-26 1999-10-14 Daimler Chrysler Ag Control element arrangement for controlling the longitudinal and transverse movement of a motor vehicle
DE102011001395B4 (en) 2011-03-18 2017-09-14 Elobau Gmbh & Co. Kg Pedal system for motor vehicles

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE679251C (en) * 1936-09-08 1939-08-01 Karl Naumann Arrangement for the operation of electric vehicles
DE744268C (en) * 1940-12-24 1944-01-13 Georges Rene Julien Haa Pierre Switching system for electric vehicles
US2399605A (en) * 1942-02-18 1946-04-30 Yale & Towne Mfg Co Motorized lift truck
CH224813A (en) * 1942-02-27 1942-12-15 Bbc Brown Boveri & Cie Electrically powered motor vehicle with change gears.
FR934260A (en) * 1946-09-17 1948-05-18 Mavilor Safety device particularly applicable to the control of electric handling trucks
US2482550A (en) * 1947-05-24 1949-09-20 Furnas Electric Co Foot actuated rotary switch
FR1068797A (en) * 1952-08-30 1954-06-30 Improvements to the control of motor vehicles
DE924189C (en) * 1953-08-14 1955-02-28 Sig Schweiz Industrieges Switch arrangement for electric stacker vehicles
FR1100103A (en) * 1954-02-24 1955-09-16 Vehicules Et Tracteurs Electr Advanced device for driving electric vehicles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1980002483A1 (en) * 1979-05-08 1980-11-13 Eaton Ltd Directional control system

Also Published As

Publication number Publication date
DE1293041B (en) 1969-04-17
CH394037A (en) 1965-06-15

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