GB2200083A - Steerable trolley - Google Patents

Steerable trolley Download PDF

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Publication number
GB2200083A
GB2200083A GB08701132A GB8701132A GB2200083A GB 2200083 A GB2200083 A GB 2200083A GB 08701132 A GB08701132 A GB 08701132A GB 8701132 A GB8701132 A GB 8701132A GB 2200083 A GB2200083 A GB 2200083A
Authority
GB
United Kingdom
Prior art keywords
brake
trolley
castor
steerable
finger
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.)
Pending
Application number
GB08701132A
Other versions
GB8701132D0 (en
Inventor
Jonathan Mark Parsons
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB08701132A priority Critical patent/GB2200083A/en
Publication of GB8701132D0 publication Critical patent/GB8701132D0/en
Publication of GB2200083A publication Critical patent/GB2200083A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
    • B62B3/14—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor characterised by provisions for nesting or stacking, e.g. shopping trolleys
    • B62B3/1492—Wheel arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
    • B62B3/14—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor characterised by provisions for nesting or stacking, e.g. shopping trolleys

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Handcart (AREA)
  • Braking Elements And Transmission Devices (AREA)

Abstract

A steerable shopping trolley; has a load platform basket 1, four swivel castors the rear two being fitted with independent steering control brakes 2. To steer the trolley the left hand handle operates the left hand swivel castor brake to turn left while the right hand handle operates the right hand swivel castor brake to turn right. The castor brakes operates as follows:- The control handle 3 is pulled backwards rotating the handle driving a wedge on the underside of the handle against a ball bearing 5, causing a push rod 6 to move downwards. The brake push rod pushes a spring loaded brake activating pin 7 against a spring loaded brake finger 8. The brake finger rubs against the castor wheel. The clearance between the brake finger and the castor wheel can be adjusted by means of a screw and locknut 9 on the brake finger. <IMAGE>

Description

STEERABLE TROLLEY This invention relates to a steerable trolley.
Trolleys are well known vehicles, pushed or pulled by a person, used to carry goods or other articles. Trolleys comprise a load platform, a push handle and three or four swivel castors. Various types of trolley are in common use for specific purposes, examples being shopping trolley1 stock-room trolley, airport trolley, cash and carry trolley.
The four swivel castors allow the trolley to be pushed in any direction- ie, sideways, forwards, backwards. This freedom of movement does however cause problems of control for the operator.
When the trolley is loaded and moving it is reluctant to deviate from its set course and when on an uneven or sloping floor the trolley will try to turn in the direction of the slope. To control the trolley and steer it in the required direction the operator must exert considerable force on the handle.
According to the present invention, there is provided a steerable trolley fitted with three or four swivel castors, the rear two fitted with a differential braking system which controls the direction of travel of the trolley by slowing down either right or left hand castor.
A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawing in which: Figure 1 shows in perspective, the trolley fitted with two steering handles.
Figure 2 shows the path of the trolley when the trolley is moving forwards and the left hand steering handle is pulled backwards.
Figure 3 shows the braking mechanism in the control handle.
Figure 4 shows the braking mechanism in the swivel castor.
Figure 5 shows the steering system fitted to a different trolley arrangement.
Referring to the drawing the steerable trolley comprises a load platform/basket 1, four swivel castors the rear two fitted with steering control brakes 2. The steering control brakes comprise of a left hand and right hand control handle 3 and two of each of the following:- basket top mounting block 4 acting as top push rod bearing, ball bearing 5, brake push rod 6, sprung loaded brake activating pin 7, sprung loaded pivoted brake finger 8, brake adjustor screw and locknut9,castor mounting spigot 10 acting as bottom push rod bearing.
When the steering handle 3 is pulled backwards it rotates about a pivot point on the top mounting block. As the handle rotates a ramp on the underside of the handle act against a ball bearing 5 which pushes the brake push rod 6 downwards. The basket top mounting block 4 locates the handle pivot also act as a sliding guide for the brake push rod 6. The brake push rod fits into a spring loaded brake activating pin 7 which slides through the swivel castor spigot mounting 10. The activating pin pushes on the torsional spring loaded brake finger 8 pivoted at the front of the castor fork.
The brake finger presses against the wheel slowing it down causing the trolley to turn. The castor spigot mounting 10 holds the swivel castor together, provides a slide bearing for the brake activating pin 7 and provides a mounting spigot for mounting into the trolley frame.
The brakes can be adjusted by screwing the brake adjustment screw 9 in or out of the brake finger 8, using the lock nut to set the adjustment.
In order to turn left when moving forward the lefthand handle is pulled rearwards causing the left hand castor to be braked and slow down. To turn sharp left from stationary the left hand handle is pulled rearwards whilst the right hand handle is pushed, this action causing the trolley to pivot around the left hand castor. In order to turn right the right hand handle is pulled causing the right hand castor to slowdown.

Claims (8)

  1. 7 A steerable trolley fitted with three or four swivel castors, the rear two fitted with a differential braking system which controls the direction of travel of the trolley by slowing down either right or left hand castor.
  2. 2 A steerable trolley as claimed in Claim 1 wherein left hand and right hand steering control handles are provided to allow the operator to brake the left or right rear swivel castor.
  3. 3 A steerable trolley as claimed in Claim 2 wherein a ramp on the control handle and ball bearing are provided to convert the rotary motion of the control handle to downwards movement of the brake push rod.
  4. 4 A steerable trolley as claimed in Claim n wherein a brake push rod and spring loaded brake activating pin are provided to activate the brake finger.
  5. 5 A steerable trolley as claimed in Claim 4 wherein a torsional spring-loaded brake finger is provided to act as a brake against the swivel castor wheel.
  6. 6 A steerable trolley as claimed in Clai 5 wherein a brake adjustor screw and locknut are provided on the brake finger to adjust the clearance between the brake finger and castor wheel.
  7. 7 A steerable trolley as claimed in Claim 4 wherein a castor mounting spigot holds the swivel castor together, acts as q slide bearing for the brake activating pin and acts as a spigot for mounting onto the trolley frame.
  8. 8 A steerable trolley substantial]y as described herein with reference to Figures 1-5 of the accompanying drawing.
GB08701132A 1987-01-20 1987-01-20 Steerable trolley Pending GB2200083A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08701132A GB2200083A (en) 1987-01-20 1987-01-20 Steerable trolley

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08701132A GB2200083A (en) 1987-01-20 1987-01-20 Steerable trolley

Publications (2)

Publication Number Publication Date
GB8701132D0 GB8701132D0 (en) 1987-02-25
GB2200083A true GB2200083A (en) 1988-07-27

Family

ID=10610901

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08701132A Pending GB2200083A (en) 1987-01-20 1987-01-20 Steerable trolley

Country Status (1)

Country Link
GB (1) GB2200083A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0403265A2 (en) * 1989-06-13 1990-12-19 Clares Merchandise Handling Equipment Limited A steerable mobile load carrier
FR2648775A1 (en) * 1989-06-27 1990-12-28 Maloeuvre Robert Trajectory guidance device, particularly for handling trolleys
GB2293579A (en) * 1994-09-19 1996-04-03 Clares Merch Hand Equip Ltd Shopping trolley
GB2339409A (en) * 1998-06-15 2000-01-26 Colebrook Taylor Jonathon Jere Trolley
GB2339556A (en) * 1998-07-15 2000-02-02 Nichola Jane Lake Steerable shopping trolley
GB2349126A (en) * 1999-04-22 2000-10-25 Colin Paul Cutmore A steerable trolley which uses differential braking of the rear castors
FR2844242A1 (en) * 2002-09-09 2004-03-12 Olivier Lhuillier Slowing and braking assembly for commercial or industrial trolley includes two separate braking devices operating on rear wheels and actuated by foot pedal or hand levers on trolley handlebar
AU2013100292B4 (en) * 2013-03-04 2013-08-15 Rudolph Ricardo Decampi Improved front wheel caster pivot lock for shopping trolleys

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4397571A1 (en) * 2021-09-27 2024-07-10 Globe (Jiangsu) Co., Ltd. Handcart

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2132478A (en) * 1982-12-21 1984-07-11 British Castors Ltd Castor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2132478A (en) * 1982-12-21 1984-07-11 British Castors Ltd Castor

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0403265A2 (en) * 1989-06-13 1990-12-19 Clares Merchandise Handling Equipment Limited A steerable mobile load carrier
EP0403265A3 (en) * 1989-06-13 1991-03-06 Clares Merchandise Handling Equipment Limited A steerable mobile load carrier
FR2648775A1 (en) * 1989-06-27 1990-12-28 Maloeuvre Robert Trajectory guidance device, particularly for handling trolleys
GB2293579A (en) * 1994-09-19 1996-04-03 Clares Merch Hand Equip Ltd Shopping trolley
GB2293579B (en) * 1994-09-19 1997-03-26 Clares Merch Hand Equip Ltd Shopping trolley
GB2339409A (en) * 1998-06-15 2000-01-26 Colebrook Taylor Jonathon Jere Trolley
GB2339556A (en) * 1998-07-15 2000-02-02 Nichola Jane Lake Steerable shopping trolley
GB2339556B (en) * 1998-07-15 2002-02-13 Nichola Jane Lake Shopping trolleys
GB2349126A (en) * 1999-04-22 2000-10-25 Colin Paul Cutmore A steerable trolley which uses differential braking of the rear castors
FR2844242A1 (en) * 2002-09-09 2004-03-12 Olivier Lhuillier Slowing and braking assembly for commercial or industrial trolley includes two separate braking devices operating on rear wheels and actuated by foot pedal or hand levers on trolley handlebar
AU2013100292B4 (en) * 2013-03-04 2013-08-15 Rudolph Ricardo Decampi Improved front wheel caster pivot lock for shopping trolleys

Also Published As

Publication number Publication date
GB8701132D0 (en) 1987-02-25

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