EP0221985A1 - Brouette - Google Patents

Brouette

Info

Publication number
EP0221985A1
EP0221985A1 EP19860903461 EP86903461A EP0221985A1 EP 0221985 A1 EP0221985 A1 EP 0221985A1 EP 19860903461 EP19860903461 EP 19860903461 EP 86903461 A EP86903461 A EP 86903461A EP 0221985 A1 EP0221985 A1 EP 0221985A1
Authority
EP
European Patent Office
Prior art keywords
catch
wheelbarrow
bin
arm
handle
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.)
Withdrawn
Application number
EP19860903461
Other languages
German (de)
English (en)
Inventor
Clive A. Steer
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
Publication of EP0221985A1 publication Critical patent/EP0221985A1/fr
Withdrawn legal-status Critical Current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
    • B62B1/00—Hand carts having only one axis carrying one or more transport wheels; Equipment therefor
    • B62B1/18—Hand carts having only one axis carrying one or more transport wheels; Equipment therefor in which the load is disposed between the wheel axis and the handles, e.g. wheelbarrows
    • B62B1/24—Hand carts having only one axis carrying one or more transport wheels; Equipment therefor in which the load is disposed between the wheel axis and the handles, e.g. wheelbarrows involving tiltably-mounted containers

Definitions

  • a wheelbarrow is considered to be a handbarrow having a single axis for the load-bearing ground wheels, a bin for the load, and means serving as handles.
  • the invention is particularly concerned with the type of wheelbarrow disclosed in International Patent Application No. W085/01024, published 14 March 1985, which has a bin for the load, a ground wheel at a front end of the bin and a handle at a rear end, the handle having a cam shaped extension which forms a leg for the bin rear end and which is mounted on a pivot carried on the bin.
  • the handle can be released from its normal position and then pivoted forward in the direction of the wheel, this action causing rotation of the cam and the bin rear end then being lowered to near ground level to allow easy loading of the bin.
  • the handle When loaded the handle can be returned to its position at the bin rear end and the cam simultaneously lifts the bin and load. The load may then be carried and emptied as with a conventional wheelbarrow.
  • the present invention is concerned with a catch means for the wheelbarrow handle which can be arranged to lock automatically when the handle is returned to its normal position.
  • a wheelbarrow having a bin for the load, a ground wheel at a front end of the bin, and two handles at a rear end of the bin, each handle having a cam- shaped extension at its inner end which extension extends beneath th bin to form leg means at the bin rear end, each handle being mounted on a pivot which is fixed relative to the bin and being further secured by a catch capable of locking the handle when the said extension is positioned to serve as the leg means, in which the said catch comprises a catch arm mounted on the bin which is capable of engaging a catch member located on the handle.
  • the catch arc * nay conveniently be carried on this frame.
  • a catch arm is located at both sides of the frame, each of these catch arms being capable of engaging respective catch members located on parts of the handles at each side of - the wheelbarrow.
  • the two arms may be connected together by a linkage such that both arras Eay be moved together for locking or unlocking the catches.
  • each catch arm may be mounted on a pivot such that locking or unlocking of the catch is effected by moving the arm about its pivot.
  • each catch arm pivot is associated with a spring such that the catch arm will always tend to be moved towards a catch-locked condition when no deflecting force is present.
  • the or each catch arm may include a ramp portion such that as the catch member on the handle approaches its respective catch arm, the catch member will strike the ramp portion and cause the catch arm to be deflected about the pivot before the arm engages the member to effect the locking action.
  • the catch arm may be associated with stop means such that it nay only be deflected about its pivot through an angle of predetermined magnitude.
  • Figure 1 shows the wheelbarrow of the aforementioned Patent Application in side view
  • Figure 2 is a plan view on an enlarged scale of the frame for supporting the ground wheel and bin
  • Figure 3 is ⁇ view from the left side on Figure 2 showing the catch -.arranger-en
  • Figures 4 to 6 are further views showing the catch arrangement.
  • the wheelbarrow depicted in Figure 1 had ⁇ bin 1 with a ground wheel 2 rigidly fixed at a front end thereof.
  • the wheel 2 was supported in a frame 3 which was attached to the bin 1 and the frame also had means * for securing handles 4 by which the wheelbarrow could be used to transport a load of material carried in, the bin.
  • the frame 3 was provided with ⁇ catc 6 at e ⁇ ch side and by releasing these catches, the handles 4 -could be folded forward upon pivots 7 in the direction' of the wheel as described in the aforementioned Patent Application.
  • This action allowed the cam-shaped wheelbarrow legs below the handles to lower the rear end of the bin 1 to ground level to allow e ⁇ sy loading of the bin.
  • Returning the wheelbarrow handles 4 to the position shown in the Figure caused the loaded bin to be restored to the conventional wheelbarrow position.
  • the lo ⁇ d could then be carried aw ⁇ y and subsequently emptied from the bin in the usual wheelbarrow manner.
  • FIG. 2 shows details of the wheelbarrow frame 3 and c ⁇ tch arrangement.
  • the frame w ⁇ s constructed of ⁇ steel tube having an outside diameter of one inch and which had been bent into a generally U-shaped fore.
  • a bracket S had been welded and the bracket ends 9 of this bracket, bent in a direction aw ⁇ y from the remainder of the frame 3, formed supports for the c ⁇ tches 6.
  • the fr ⁇ me 3 ⁇ lso included lugs 11 for mounting high tensile bolts (not shown) which formed the pivots 7 for the handle 4 of the wheelbarrow.
  • each catch 6 included a catch arm 12 which was secured by means of a metal pin 13 to one end of a shaft 14 carried in a be ⁇ ring 16 in e ⁇ ch one of the bracket ends 9.
  • the catch arm 12 was provided with a cut-out recess 17 and the arm was thus able to be moved through a predetermined angle about a stop 18 protruding from the bracket end 9. Since both of the catch arms 12 were connected together rigidly by means of the shaft 14, the single stop 18 served to control the permitted angular movement of both arms.
  • a spring 19 was arranged to ensure that both catch arms 12 tended to. ove towards one position where the catches were in a 'locked' condition. In this 'locked' condition, the stop 18 is pushed up against one preferred end of the recess 17.
  • Figure 3 particularly shows how the catches could be used to lock the handle 4 part of the wheelbarrow to the frame 3.
  • the handle 4 (shown in cross-section) carried a catch member 21 which was of a U-shape with the ends of the long arms of the shape welded to the upper and lower surfaces respectively of the steel tube forming the handle.
  • Figure 5 shows the catch arm 12 in the 'locked' condition with the catch member 21 located in a slot 22 of the arm. It will be noted that the " end of the slot 22 where the catch member is situated is slightly towards the right of a vertical line through the centre of the shaft 14. This provision ensured that an upwards pull on the catch member 21 would not tend to tilt the catch arm to the right and thus possibly release the member 21 from the slot 22.
  • the catch arm 12 was provided with a ramp portion 23 and it also carried a finger grip 24.
  • the shaft 14 further included two rollers 26 which were freely rotatable on the shaft and which acted as supports for the rear end of the bin of the wheelbarrow when the handles were folded and the rear end of the bin lowered to near ground level.
  • the rollers 26 then allowed the rear end of the bin to be supported just clear of the ground surface on smooth ground and the bin could be rolled along to permit load materiel to be re ⁇ dily pushed or swept into the bin.
  • the rollers 26 were m ⁇ int ⁇ ined ⁇ t the outer ends of the sh ⁇ ft 14 by a tube 27 which was carried concentrically on the shaft and was a close fit thereto. The tube 27 thus gave some increased stiffness to the shaft as well as providing a simple way of correctly locating the rollers 26.
  • the rollers 26 were formed of a solid plastics material to ensure a long life in service.
  • both of these arms returned to the catch locked condition where the preferred end of the recess 17 on the arm 12 was pressed up against the stop 18.
  • the spring 19 ensured that the catch arm always returned to this position whenever any finger pressure on grip 24 had been rele ⁇ sed.
  • Emptying of the wheelbarrow could be done by tipping the load materi ⁇ l over the front wheel or if one is c ⁇ rrying fr ⁇ gile ⁇ terial such as paving stones the load may be emptied by releasing the catches 6 and lowering the bin to ground level. This allowed the load to be slid out of the bin with ⁇ minimum risk of bre ⁇ kage ⁇ nd ⁇ lso with a minimum effort on the part of the wheelbarrow user.
  • the catch arms could be arranged to be rele ⁇ sed from their locked condition by ⁇ pushing r ⁇ ther than ⁇ pulling ⁇ ction, if this w ⁇ s required.
  • the rollers 26, inste ⁇ d of being of a solid plastics material could alternatively be of a hollow, blow- ⁇ oulded form.
  • the spring 19, instead of being located at one end of the shaft 14 might be positioned at about the mid-point of the shaft.
  • the tube 27 which had been located coaxially on the shaft could be omitted and the rollers 26 might be secured in their positions at each side by a metal washer and a split pin passing through a hole in the sh ⁇ ft 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Handcart (AREA)

Abstract

Broutte ayant un caisson (1) pour la charge, une roue (2) à l'extrémité avant du caisson, et deux brancards (4) à l'extrémité arrière du caisson; chaque brancard (4) est prolongé à son extrémité intérieure d'une partie arrondie qui dépasse sous le caisson pour former un pied à l'arrière dudit caisson; chaque brancard est monté sur un pivot qui est fixe par rapport au caisson, et accroché par un arrêt (6) pouvant verrouiller le brancard (4) lorsque ladite partie arrondie est en position de pied; l'arrêtoir (6) comprend un bras d'arrêt monté sur le caisson (1) qui peut s'engager dans un élément d'arrêt situé sur le brancard (4).
EP19860903461 1985-05-16 1986-05-15 Brouette Withdrawn EP0221985A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8512459 1985-05-16
GB858512459A GB8512459D0 (en) 1985-05-16 1985-05-16 Wheelbarrow

Publications (1)

Publication Number Publication Date
EP0221985A1 true EP0221985A1 (fr) 1987-05-20

Family

ID=10579260

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19860903461 Withdrawn EP0221985A1 (fr) 1985-05-16 1986-05-15 Brouette

Country Status (4)

Country Link
EP (1) EP0221985A1 (fr)
AU (1) AU5815686A (fr)
GB (1) GB8512459D0 (fr)
WO (1) WO1986006694A1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1327578A (en) * 1919-03-10 1920-01-06 Frank D Vessey Wheelbarrow
US2544505A (en) * 1946-12-14 1951-03-06 Kronhaus Semen Self-loading wheelbarrow
FR1080311A (fr) * 1953-07-02 1954-12-08 Brouette ou véhicule analogue
GB794752A (en) * 1955-09-07 1958-05-07 Thacker Barrows Ltd Improvements in or relating to wheel barrows
CA1182487A (fr) * 1981-10-02 1985-02-12 Mario Primeau Brouette a brancards sur pivots
GB8323252D0 (en) * 1983-08-30 1983-09-28 Steer C A Wheelbarrow

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8606694A1 *

Also Published As

Publication number Publication date
GB8512459D0 (en) 1985-06-19
AU5815686A (en) 1986-12-04
WO1986006694A1 (fr) 1986-11-20

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Legal Events

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Effective date: 19870416