US3833262A

US3833262A - Dumping scraper-barrow

Info

Publication number: US3833262A
Application number: US00334145A
Authority: US
Inventors: N Tasse
Original assignee: Individual
Current assignee: Individual
Priority date: 1973-02-20
Filing date: 1973-02-20
Publication date: 1974-09-03
Anticipated expiration: 1991-09-03

Abstract

There is disclosed a dumping scraper-barrow in which raising of the scoop to dumping position is effected by pulling one of the handles towards the other thereby actuating a linkage connecting the handle to the back of the scoop. The users thereby are enabled to raise the scoop or even to adjust the angle during scraping by simply squeezing together with his arms without the necessity of letting go of one of the handles. The arrangement also gives the users plenty of leverage for raising the scoop when the same is loaded down with material to be dumped.

Description

United States Patent [1 1 Tasse [451 Sept. 3, 1974 1 DUMPING SCRAPER-BARROW [76] Inventor: No'l Tasse, 132, rue Gauthier,

St-Jerome, Comte Terrebonne, Quebec, Canada [22] Filed: Feb. 20, 1973 21 Appl. No.: 334,145

[58] Field of Search 298/2, 5, 3; 37/53, 103

[56] References Cited UNITED STATES PATENTS 1,032,009 7/1912 Long 298/3 2,037,222 4/1936 Farrar 298/3 2,693,389 11/1954 Maxwell 298/2 2,852,304 9/1958 Harrison 298/3 3,043,033 7/1962 Ingram 298/2 X 3,594,932 7/1971 Eriksson 298/2 FOREIGN PATENTS OR APPLICATIONS 67,531 8/1948 Denmark 298/2 Primary Examiner-Philip Goodman Attorney, Agent, or FirmRaymond A. Robic 57 ABSTRACT There is disclosed a dumping scraper-barrow in which [52] US. Cl. 298/2, 298/3 [51] Int. Cl B621) 1/24 raising of the scoop to dumping position is effected by pulling one of the handles towards the other thereby actuating a linkage connecting the handle to the back of the scoop. The users thereby are enabled to raise the scoop or even to adjust the angle during scraping by simply squeezing together with his arms without the necessity of letting go of one of the handles. The arrangement also gives the users plenty of leverage for raising the scoop when the same is loaded down with material to be dumped.

6 Claims, 4 Drawing Figures DUMPING SCRAPER-BARROW The present invention relates to a dumping scraperbarrow which may be used for scraping up snow and taking it to a dumping location, picking up sand or other materials from a pile and dumping them gradually or all at once somewhere else as well as for a variety of other purposes.

Various dumping scraper-barrows. are known in which various means have been applied to obtain the raising of the scoop to dumping position. In most cases, the leverage offered by the dumping means was insufficient for anything but verylight loads such as snow. In other cases, the dumping position is achieved by pushing forward on the scraper which presupposes an obstacle against which dumping is carried out. Such an obstacle is not always present and furthermore dumping in these cases is effected with the front of the scoop in contact with the ground or with a pile of material already dumped, which .prevents complete emptying of the scoop.

In all prior art constructions furthermore, the means for effecting the dumping or for releasing the scoop require letting go of one of the handles with resulting inconvenience for the user.

It is an object of the present invention to provide a dumping scraper-barrow in which dumping is effected by moving one of the handle, preferably towards the other handles so that the inconvenience of having to let go of one of the handles is avoided and plenty of leverage is provided by squeezing the arms together to dump relatively heavy loads.

It is a further object of the invention to provide a dumping scraper-barrow in which the angle of the scoop can easily be adjusted during the scraping operation to adapt to the conditions of the material which is being scraped. v

The invention accordingly provides a dumping scraper-barrow comprising a frame, handle means on the frame, ground engaging mounting means connected to the frame, a scoop pivotally mounted on the frame, and linkage connected between the scoop and the frame to pivot the scoop with respect to the frame, a portion of the linkage constituting part of the handle means. It can be seen that this structure responds to the aforementioned objects and offers the advantages discussed above.

More specifically, the handle means comprises one handle fixed on the frame and another handle pivotally mounted on the frame and constituting the aforementioned portion of the linkage.

Preferably according to the invention, the pivotable handle is mounted on the frame to pivot substantially towards the fixed handle which gives the user a favorable mechanical advantage.

Further according to the invention, the pivotable handle is pivoted to the frame intermediate the ends thereof and the linkage further comprises a lever having an intermediate pivot connected to the frame and lateral pivots to either side of the intermediate pivot and a link connected to each lateral pivot, one of the links being pivoted to the scoop and the other to the handle. This arrangement is simple to manufacture and enables the maximum dumping height desired to be adjusted by varying the proportions of the lever, links and handle.

Further according to the invention, the one link is connected to a point of the scoop lower than the pivotal connection of the link to the lever and the other link is connected to the handle on the side of the'pivotal connection of the handle to the frame remote from a hand held portion of the handle. With this arrangement, both links are only stressed tensionally against the load on the scoop and may thus be made of light weight material.

Further according to the invention, the scoop carries a hook engageable with the lever securing and limiting the lever in a lowered position of the-scoop. The scoop also carries a stop engageable with the one link limiting the link in araised position of the scoop.

Still according to the invention, the pivotable handle carries a locking means engageable with the scoop in a lowered position of the scoop and disengageable from the scoop upon movement of the pivotable handle towards the fixed handle so that if desired, the scraperbarrow can be used as a rigid unit without the pivotal dumping feature.

Still according to the invention, the frame is wheel mounted and the scoop is pivoted to the frame forward of the wheel mount to allow dumping of the load from the scoop in a raised position of the front edge of the scoop.

' An embodiment of the invention is illustrated by way of example in the accompanying drawings in which FIG. 1 is a perspective view of a dumping scraperbarrow according to the invention in normal position,

FIG. 2 is a perspective view corresponding to that of FIG. 1 showing the scraper-barrow in dumping posinon,

FIG. 3 is a perspective view of the scraper-barrow in dumping position seen from theside opposite to FIGS. 1 and 2, v v Y FIG. 4 is a fragmentary elevation of the scraperbarrow in dumping position.

Referring to the drawings, the scraper-barrow illustrated therein, comprises a frame 10 made of two

longitudinal members

12 and 14 joined bycross members l6, l8 and 20. One longitudinal member 12 has the rear end thereof bent to form a handle 22. Each

frame member

12 and 14 carries a yoke 24 supporting a wheel 26 journaled on a shaft 28. The lower inner ends of yokes 24 are connected by a crossbar 30.

To the forward ends of

frame members

12 and 14, are pivotally connected the front end of sidewalls 32 of a scoop 34 which also comprises a bottom 36 and a rear wall 38. Sidewalls 32 and the rear wall 38 are provided with an outwardly extending lip 40 which in the normal or lowered scraping position rests on the frame members l2 and I4 and on the cross member 16 which is I adjacent the rear end of the scoop. Wheels 26 are located intermediate the longitudinal extent of the scoop 34 towards the rear end thereof.

A handle 42 with a bent hand held portion 44 at the rear end thereof is pivotally mounted on longitudinal pivotable between a position where it is essentially aligned with frame member 14 and a position in which the hand held portion 44 has moved towards the handle 22, this latter position being limited by looped bracket 46.

The handle 42 has at its forward end a projecting lock pin 48 extending in a plane generally parallel to the plane of the frame and engageable with a hole 50 in the] corresponding sidewall 32 of the scoop 34 when the handle 42 is in linewith frame member 14. in this position of the handle therefor, the scoop is positively locked in its lowered or scraping position; pivotal movement of the handle 42 away from this position extracts the lock pin 48 from the hole 50 and frees the scoop 34 for pivotal movement.

The cross member 16 carries a lever 52 which is triangular in shape and is pivoted at one of its corners to cross member 16 for rotation about an axis substantially parallel to frame member 12 and located along cross member 16 towards member 12. This pivotal connection is indicated at 54. Another corner of lever 52 is pivoted at 56 to one end of a link 58 which has its other end 60 pivoted near the forward end of lever 42. The remaining corner of lever 52 is pivoted at '62 to a short link 64 pivoted at to the bottom center of scoop rear wall 38. r a

It will be seen that-as far as the mechanics of the above-described linkage are concerned, lever 52 is a lever of the second order with

pivots

56 and 62 being lateralpivots and pivot 54 being an intermediate pivot forming the, fulcrum of the lever. Movement of hand held portion 44 of handle 42 towards handle 22 exerts a pull on link 58 and rotation of the lever 52 to raise the extent of the the corner thereof which carries pivot 62 which in turn exerts a pull through link 54 on the rear end of the scoop 34 thus raising the scoop to a dumping position. Movement of the handle 42 in the opposite direction produces return of the scoop to lowered or scraping position until lip 40 engages the frame.

In the lowered position, the pivotal movement of the scoop 34 is simultaneously limited furthermore by engagement of the end of link 58 adjacent lever 52 with a stop 68 positioned at the lower corner of rear wall 38 adjacent frame member 12 as well as by engagement of the lever 52 by a hook 70 located near the upper corner of rear wall 38 adjacent member 12.

The topmost dumping position is limited by engage ment of link.64 with a stop 72 suitably located on the side of pivot 66 towards the frame member 12 near the center of the scoop wall 38. For the sake of clarity, the stop 72' has been omitted in FIG. 4.

It will be noted that the lever 52 is formed with a central sunken portion 74 which permits clearance of stop 72 and allows .the lever to be grasped by the hook 70.

It will also be seen that pivot 66 is lower than pivot 62 so that the scoop hangs by link 64 from lever 52 and link 64 is only stressed in'tension. The same applies to link 58 which in raising the scoop pulls against the weight of the scoop and of the load thereon. 'Link 58 is made of metal strip with the ends twisted at 90 with respect to each other to provide suitable orientation of

pivots

56 and 60;

in operating the device, the user grasps handle 22 in the left hand and the hand held portion 44 in the right and he can at any time during the operation of the scraper-barrow pull thehand held portion 44 towards the handle 22 to dump the load or to vary the angle of the scoop 34'if this is desirable during scraping or while loading material to the scoop. The motion of bringing the arms'together providesthe user with substantial leverage to raise the scoop 34 to dumping position even if there is a heavy load on the scoop.

The illustrated embodiment is a wheel mounted scraper-barrow but it willbe understood that the invention isalso applicable to a drag mounted scraper designed 'to rest either on the scoop or on drags connected to the. frame. 7

I claim: v 1

l. A dumping scraper-barrow comprising a frame,

handle means on said frame including a fixed handle,

ground engaging mounting means connected to said frame,

a scoop pivotally mounted on said frame,

and linkage connected between said scoop and said frame to pivot said scoop with respect to said frame, a portion of said linkage comprising a handle member pivoted to said frame, and movable toward said fixed handle to tilt said scoop, said'pivoted handle member having a locking means thereon engageable with said scoop in a lowered position of said scoop to lock said'scoop in said lowered position and disengageable from said scoop upon. movement of said pivotable handle towards said fixed handle.

2. A dumping scraper-barrow comprising:

a frame,

handle means on said frame,

ground engaging mounting means connected to said frame,

a scoop pivotally mounted on said frame,

linkage connected between said scoop and said frame to pivot said scoop with respect to said frame, a portion of said linkage constituting part of said handle means,

said handle means including one handle fixed on the frame and another handle pivotably mounted on said frame and constituting said portion of said linkage,

said pivotable handle being mounted on said frame to pivot substantially towards said fixed handle, said pivotable handle being pivoted to said frame intermediate the ends thereof and said linkage further comprising a lever having an intermediate pivot connected to said frame and lateral pivots to either side of said intermediate pivot and a link connected to each lateral pivot, one of said links being pivoted to said scoop and the other to said pivotally mounted handle.

3. A dumping scraper-barrow according to claim 2, wherein said one link is connected to a point of said scoop lower than the pivotal connection of said link to said lever.

4. A dumping scraper-barrow according to claim 2, wherein said other link is connected to said handle on the side of said pivotal connection of said handle to said frame remote from a hand held portion of said handle.

5. A dumping scraper-barrow according to claim 2, wherein said scoop carries a hook engageable withsaid lever securing and limiting said lever in a lowered position of said scoop.

6'. A dumping scraper-barrow according to claim 2, wherein said scoop carries a stop engageable with said one link limiting said link in a raised position of said scoop.

Claims

1. A dumping scraper-barrow comprising a frame, handle means on said frame including a fixed handle, ground engaging mounting means connected to said frame, a scoop pivotally mounted on said frame, and linkage connected between said scoop and said frame to pivot said scoop with respect to said frame, a portion of said linkage comprising a handle member pivoted to said frame, and movable toward said fixed handle to tilt said scoop, said pivoted handle member having a locking means thereon engageable with said scoop in a lowered position of said scoop to lock said scoop in saiD lowered position and disengageable from said scoop upon movement of said pivotable handle towards said fixed handle.

2. A dumping scraper-barrow comprising: a frame, handle means on said frame, ground engaging mounting means connected to said frame, a scoop pivotally mounted on said frame, linkage connected between said scoop and said frame to pivot said scoop with respect to said frame, a portion of said linkage constituting part of said handle means, said handle means including one handle fixed on the frame and another handle pivotably mounted on said frame and constituting said portion of said linkage, said pivotable handle being mounted on said frame to pivot substantially towards said fixed handle, said pivotable handle being pivoted to said frame intermediate the ends thereof and said linkage further comprising a lever having an intermediate pivot connected to said frame and lateral pivots to either side of said intermediate pivot and a link connected to each lateral pivot, one of said links being pivoted to said scoop and the other to said pivotally mounted handle.

5. A dumping scraper-barrow according to claim 2, wherein said scoop carries a hook engageable with said lever securing and limiting said lever in a lowered position of said scoop.

6. A dumping scraper-barrow according to claim 2, wherein said scoop carries a stop engageable with said one link limiting said link in a raised position of said scoop.