US 4,958,846 AGrant
Leaf Wagon
Issue Date:1990-09-25
•6 Claims
•3 Drawing Sheets
Abstract
A leaf carrying cart having a pair of U-shaped members abutting each other and supporting a base, with truss-like members on the side for supporting wheels. A removable handle which does not interfere with the loading or unloading of leaves can be used at either end of the cart. The cart makes a shallow angle with the ground when tipped for loading and unloading.
Metadata
Inventor
- George Greenberg
Application Information
Application Number:US 2972166
Filing Date:1989-01-17
Priority Date:1989-01-17
Art Unit:316
Classifications
IPC:
B62B 120
Field of Search:
28047.131;47.17;47.18;47.24;47.26;47.33;47.315;79.11;79.2;79.7;639;38;651;652 ;33.991
Patent Drawings (3 sheets)
Description
Background of the Invention
The present invention relates to hand carts and more particularly to hand carts especially useful for the gathering and removal of leaves.
At the present time the wheelbarrow appears to be most generally used cart for the collection and carting away of leaves. When such a device is utilized the leaves must be lifted into the cart which ordinarily lacks sufficient capacity to carry many leaves at one time. A wheelbarrow with sufficient capacity to carry a lot of leaves at one time tends to be very large and heavy. In addition, the wheelbarrow is not suited for riding over rough terrain.
Another problem is the manufacture, assembly and shipping of hand carts. Even the wheelbarrow when disassembled for delivery and assembly by the consumer for use, is quite often a bulky device.
A variety of hand carts are shown in U.S. Pat. Nos. 1,955,997, 3,774,930, 4,240,353, 4,375,113 and 4,735,424. None of the preceding patents teaches or suggests the present invention.
It is not difficult to design hand carts, sleds and other carrying devices to satisfy many different requirements. However, in a modern economy the cost of storage of merchandise as well as the cost of labor of assembling the components is prohibitely expensive so that it is no longer economical to assemble, package and store hand carts in stores or warehouses. Instead, considerations of economy require bulky items, such as hand carts to be constructed in a way that allows them to be packaged and stored in compact boxes and to be asssembled with a minimum use of tools.
Summary of the Present Invention
In the present invention there is provided a hand cart uniquely useful for the collection and carting away of leaves.
A preferred embodiment of this invention has the capacity to carry much larger volumes of leaves normally found in wheelbarrows or other devices of similar type. In addition, it can be tipped at an angle sufficiently shallow so that the leaves can be raked onto its carrying platform rather than being lifted. Furthermore, the wheel construction permits convenient movement over rough terrain and the use of conventional bicycle wheels of thin axle construction so that the cart incorporating the principles of this invention is relatively light in weight. A further feature of this invention is that in its knock down form prior to assembly in the form it is shipped it requires far less space and is lighter in weight than any similar devices available.
It is thus a principal object of this invention to provide an improved hand cart for use in collecting and carting away leaves.
This and other objects of this invention will become better understood in the light of the accompanying detailed description of a preferred embodiment of this invention.
Brief Description of the Drawings
FIG. 1 is a perspective view of a hand cart constructed according to the principles of this invention including a schematic illustration of a wheel support bracket.
FIG. 2 is an exploded isometric view of the end frames and the base of the hand cart shown in FIG. 1.
FIG. 2a is a side elevation view of the end frames assembled of the cart shown in FIGS. 1 and 2.
FIG. 3 is an isometric view showing the details of a wheel support bracket.
FIG. 3a is a view along 3a--3a of FIG. 3 with the wheel in place.
FIG. 4 is partially schematic elevation view of the cart in its loading position.
FIG. 5 is a partially schematic elevation view of the cart with a snout to facilitate transferring the leaves to a bag.
FIG. 6 is a side elevation view of the cart assembled for shipment and sale, prior to assembly.
FIG. 7 is an isometric, illustrative view of an alternative embodiment of this invention.
FIG. 8 is an isometric view of the cart shown in FIG. 7 partially folded up.
FIG. 9 is an isometric view of the cart shown in FIG. 7 folded up for storage.
Detailed Description of the Preferred Embodiment
Referring now to FIG. 1, cart 10 is composed of a frame 11 made of frame members 12 and 14 supporting a bed 16, a pair of wheels 18 and 22, and a handle 24.
For details of frame members 12 and 14 with bed 16, reference is made to FIG. 2. Members 12 and 14 are identical with each other except that one of the members, in this case member 14, is provided with a supporting plate 26 whose purpose will be explained below.
Member 14 is U-shaped in construction with an internal U-shaped groove 28 and a pair of grooves 32 and 34 along the top surfaces of the parallel arms of member 14.
Member 12 is similarly provided with an internal groove 36 and parallel grooves 38 and 42.
Bed 16 is a flat sheet of plywood in a standard stock size, namely, four feet by eight feet, and members 12 and 14 are sized and constructed to accomodate bed 16 in the manner now to be described.
As seen from FIG. 2, bed 16 is slid into member 12 riding in groove 36 and then member 14 is engaged with bed 16 until members 14 and 16 come together with their legs abutting each other as seen in FIG. 2a. Plate 26 is seen to overlap the underside of both members where they come together and may be screwed into attachment as shown by openings 26a to accomodate screws (not shown).
Once members 12 and 14 are assembled with bed 16 in place, wheels 18 and 22 are mounted.
Wheel 18 is supported by a wheel support bracket 44 whose details are seen in FIG. 3. It should be noted that wheel 22 is similarly supported on the other side of cart 10 shown in FIG. 1 except that its wheel mounting frame is not visible.
Bracket 44 is a made of a hollow elongated box 46 of wire or similar truss-like construction supporting a pair of inverted V-shaped slots 48 and 52 to accomodate the axles 54 and 56 seen in FIG. 3a of wheel 18. This wheel support is conventional for bicycles but unique in this particular application. It is thus simple and quick to mount and demount the wheels of cart 10.
Bracket 44 is provided with a pair of mounting plates 58 and 62 so that frame 44 can be attached to one side of cart 10 as illustrated in FIG. 1. Plates 58 and 62 are provided with screw holes 58a and 62a, respectively, for this purpose.
Handle 24 is made of piping or round wire and is provided with arms 64 and 66 with braces 64a and 66a to slide into brackets 68 and 72 (as seen in phantom in FIG. 2) on one side of member 14. Handle 24 may be made removable if desired to be moved to the other side of cart 10, for which additional brackets on member 12 would be provided. Also, handle 24 may be made of pieces which can be assembled. It will also be noted that handle 24 is U-shaped with L-shaped bottoms to form arms 64 and 66 at about right angles to the upright arms so that the leaves can be loaded onto or offloaded from cart 10 from either end as will be described below with handle 24 not interfering with the movement of the leaves.
One of the features of this invention is that the leaves can be loaded on cart 10 by raking rather than lifting. As seen in FIG. 4, the length L of frame 11 is sufficiently large in relation to the size or diameter of wheels 18 and 22 that when one end is lowered to collect leaves, the angle a made by frame 11 with respect to the ground is sufficiently small so that substantially all leaves raked aboard will remain and not slide off.
Another feature of this invention is that wheels 18 and 22 may be standard bicycle wheels, sufficiently large to ride over bumps, obstacles, and ruts with minimal effort on the part of the user of cart 10.
Still another feature of the invention is the use of the side wheel supporting brackets as described which in effect form trusses to support very short shafts. This makes it possible to employ relatively thin and lightweight wheels with thin, short axles so as to keep the weight of cart 10 down to convenient and manageable proportions while at the same time being able to handle very large amounts of leaves at any one time.
In order to facilitate the unloading of the leaves in cart 10 into a plastic bag, as seen in FIG. 5, a plastic funnel shaped snout 74 having a wide mouth 76 which goes over the end of cart 10, and a smaller section 78 over which the opening into plastic bag 82 is placed. The leaves are merely raked into bag 82 for disposal.
As pointed out earlier, the size of the frames 12 and 14 when connected together could be made to accommodate a standard plywood type base of the size which is 4 by 8 feet. With this arrangement, a merchant could store cart 10 in comparatively small packages, as seen in FIG. 6, without the base 16 and the seller would have the advantage of being able to sell the cart at a lower cost because the base 16 would have to be purchased separately or the consumer may already have one available at home.
In another embodiment of this invention, shown in FIGS. 7, 8 and 9, there is shown a cart 110 made of two parts, 112 and 114, with hinges 116 to be folded in the manner indicated by arrow A, and having a handle 117.
Part 112 consists of a bed 118 and a pair of side walls 122 and 124 hinged to fold inwardly as seen in FIG. 8. Hinges 126 are shown for side wall 122 in FIG. 7. Part 114 is of similar construction.
For supporting wheels 128 and 132 there are provided a pair of frames 134 and 136, similar to frame 44 in the embodiment of FIGS. 1-6, attached to part 114 so that part 112 can be pivoted as shown in FIG. 9. A member 138 joining frame 134 and 136 provides a support for part 112 when in the fully open position shown in FIG. 7.
In the embodiment of FIGS. 7-9, cart 110 may be all wood or metal in construction. When folded up as shown in FIG. 9, handle 117 and wheels 128 and 132 may be removed for shipment and/or storage. In any event, once folded, it is a compact unit which can be deployed for use quickly and conveniently.
For example, in the arrangement of FIGS. 7-9 just described, the side walls fold down and the bed is hinged for folding over. If desired, the side walls may be fixed, and the adjacent corners of the side walls above where the bed folds may be provided with hinges.
In addition, the two parts of the bed may be made to telescope rather than fold.
While only certain preferred embodiments of this invention have been described it is understood that many variations of this invention are possible without departing from the principles of this invention.
Claims
What is claimed is:
1. A cart for carrying leaves comprising a pair of oppositely facing U-shaped members with the legs thereof abutting each other, said members having slots to accomodate a flat sheet of material of stock size forming a flat bed for carrying leaves, means mounted on opposite sides of said U-shaped members joining the abutting legs of said members for supporting a wheel on each side of the cart with a short axle protruding therefrom, each of said mounted means comprising a truss-like structure which is box-like in configuration with a pair of inverted V-shaped receptacles to accomodate the axle on the opposite sides of said wheel for convenient mounting and demounting of said wheel, removable handle means for use at either end of said cart shaped not to interfere with loading or unloading of leaves, the length of said cart in relation to the diameter of said wheels being such that the angle of said flat sheet of material when said cart is tipped for loading is sufficiently low so as to insure that substantially all leaves pushed on said sheet remain while additional leaves are piled up on said sheet.
2. The cart of claim 1 in which said U-shaped members have a vertical groove along the upper surface of each leg sized to receive and retain side walls so that said leaves can be more readily confined to said structure.
3. The cart of claim 2 having funnel-shapped means to enclose one end of said cart to facilitate transfer of leaves from said cart into a bag for collecting and transferring said leaves.
4. The cart of claim 1 in which said truss-like structure comprises spaced parallel rods connected by vertical struts to lower parallel rods, said receptacle being formed by rods supported by said parallel rods.
5. In a carrier for hauling material, a first frame, said first frame formed with a horizontal slot for removably receiving a base, and vertical slots for removably receiving side walls so that by inserting a base in the horizontal slot and side walls in the vertical slots, material can be maintained in said structure, first and second truss-like frames attached to the sides of said first frame and extending over a portion of the length of said carrier, said truss-like frames comprising spaced parallel rods connected by vertical struts to lower parallel rods, a wheel removably mounted between said parallel rods of each truss-like frame so that the carrier can be easilly pulled along the ground, a second frame identical to said first frame so as to fully enclose said base, said truss-like frames overlapping said first and second frames, each of said truss-like frames including a pair of slots in the form of an inverted V and a bicycle wheel supported within each said V.
6. The carried described in claim 5 having funnel-shaped means to direct material on said carrier into a bag for collection and transport.