GB2200083A - Steerable trolley - Google Patents
Steerable trolley Download PDFInfo
- 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
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)
- 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 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 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 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 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 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 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 A steerable trolley substantial]y as described herein with reference to Figures 1-5 of the accompanying drawing.
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4397571A1 (en) * | 2021-09-27 | 2024-07-10 | Globe (Jiangsu) Co., Ltd. | Handcart |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2132478A (en) * | 1982-12-21 | 1984-07-11 | British Castors Ltd | Castor |
-
1987
- 1987-01-20 GB GB08701132A patent/GB2200083A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2132478A (en) * | 1982-12-21 | 1984-07-11 | British Castors Ltd | Castor |
Cited By (11)
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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