# US 4,392,688 A · Crop or product carrier

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- Number: US 4,392,688 A
- Document ID: US4392688A
- Status: Granted
- Kind: A
- Application number: 06/191,812
- Filed: 1980-09-26
- Granted: 1983-07-12
- Earliest claimed: 1980-08-04
- Inventors: James A. E. S. McIntyre
- Web page: https://patentgrep.com/patent/US4392688A

## CPC

- B60P 1/02: with parallel up-and-down movement of load supporting or containing element (in combination with tipping B60P1/34; devices for lifting or lowering bulky or heavy goods for loading or unloading purposes, movable on wheels or the like, e.g. fork-lift trucks, B66F9/06 {; suspensions with electronic levelling control during loading or unloading B60G17/0157})
- A01D 46/243: {Accessories specially adapted for manual picking, e.g. ladders, carts}
- A01D 90/12: with additional devices or implements (arrangements of coupling devices A01B59/00)
- B60P: VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS (vehicles with special provisions for transporting patients or disabled persons, or their personal conveyances A61G3/00)
- A01D: HARVESTING; MOWING

## Abstract

A trailer is provided in the form of a container having side walls (20, 21, 22) and a movable base (23) which can be raised and lowered within the side walls under control of a ram (25). Thus the height of the base can be adjusted as a crop or product begins to fill the space available above the base in a raised position and by this means the extent of drop of the crop or product into the container can be made as small as possible so that the possibility of damage is significantly reduced. The base can be supported by scissor arms (27, 28) and can also be locked in the lower position to the container walls so that when the ram (25) is operated the walls and base will be tilted together about a pivot (32) for unloading.

## Claims

### Claim 1

A crop or product carrier comprising a container having side walls, end walls and a base, at least one fluid powered ram forming part of a lifting and lowering mechanism enabling the base to be raised and to be lowered progressively with respect to the side walls and end walls as the crop or product quantity increases within the container, a pivot at one end of the container enabling the base, side walls and end walls to pivot about said one end to tip the container for unloading, the end wall at said one end of the container being operable to provide an outlet opening for discharge of the crop or product during unloading, locking means for securing the base in the lowered position within the container, the means for raising and lowering the base also acting to tip the container about the pivot for unloading when the locking means secures the base in the lowered position.

### Claim 2 (depends on 1)

A crop or product carrier according to claim 1, wherein the lifting mechanism incorporates scissor arms supporting the base, one end of each scissor arm being pivotally attached respectively to the base and a side wall, whilst the other end of each scissor arm is slidably engaged respectively with the base and the side wall.

### Claim 3 (depends on 2)

A crop or product carrier according to claim 2, including scissor arms at both sides of the container.

### Claim 4 (depends on 1)

A crop or product carrier according to claim 1, including contact members attached to the sides of the base to provide contact with the side walls.

### Claim 5 (depends on 1)

A crop or product carrier according to claim 1, provided with a non-rigid covering for the floor of the base.

### Claim 6 (depends on 1)

A crop or product carrier according to claim 1, provided with wheels enabling the container to be moved along the ground.