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Optical Systems

Method-and-apparatus-for-retrieving-objects-from-the-ground

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Method and apparatus for retrieving objects from the ground

Details

Inventors: Moore, Joseph L.;
Assignee: Proficient Systems, Inc. (Abilene, TX)
Primary Examiner: Kellogg; Arthur D.
Assistant Examiner:
Attorney, Agent or Firm: Richards, Harris & Medlock

A method and apparatus for collecting flat or semiflat materials while simultaneously retrieving bottles and cans includes a ground engageable rotating drum (52) with a plurality of fingers (60) extending radially from the drum. A plurality of toothed discs (210) is rotatably mounted on a shaft and driven in conjunction with the rotation of the drum in a direction opposite that of the drum. The toothed discs (210) are positioned adjacent to but above ground level during operation of the apparatus and assists in the engagement and movement of objects by the drum and fingers to a collection location (32). A plurality of belts (130) is engaged between pulleys (212) mounted intermediate of the toothed discs (210) and corresponding pulleys (126) on a shaft spaced from the toothed discs. The belts are positioned on the trailing side of the drum and above the toothed discs and assist in engagement and movement of objects by the drum and fingers to the collection station. Stripper bars (180) assist in dislodging objects from between the fingers of the drum. A second assembly of a plurality of toothed discs (220) is mounted on a shaft and driven in conjunction with the rotation of the drum in the same direction of the drum. This second disc assembly is positioned near the top side of the drum and adjacent the structure for dislodging objects from the drum fingers. Rotation of this second disc assembly assists in directing objects carried to the top side of the drum to the collection station.

DETAILED DESCRIPTION The apparatus 20 of the present invention for retrieving objects from the ground includes a frame structure 22 including horizontal beams 24 and 26 spaced by transverse struts 28 and 30.
A material collection hopper 32 is supported behind frame 22 and an axle assembly 34 supports the frame and collection hopper for movement over a ground surface on wheel and tire assembly 36.
The structure for retrieving objects from the ground includes a rotatable drum assembly 50 consisting of a drum 52 supported by arms 56 for rotation about an axle 54.
A plurality of receiving fingers 60 is attached to and extends radially from drum 52.
A toothed disc assembly 70 is supported adjacent drum assembly 50 and behind the drum assembly near ground engagement.
A side shield 72 serves in part as a structure for supporting toothed disc assembly 70 from frame 22.
Toothed disc assembly 70 includes axle shafts 76 and 78 driven by an appropriate gear box operating from axle shaft 80 which is in turn driven by the rotation of drum assembly 50.
Axle shaft 76 also drives a conveyor assembly which will be described hereinafter in greater detail.
The drive provided therefor requires a chain guard 90 seen in FIG.
1.
A chain guard 92 also is provided to protect the chain drive from drum assembly 50 to gear box axle shaft 80.
A further chain guard 96 is shown in FIG.
1 and protects a drive chain from drum assembly 50 to a kicker assembly as will be described hereinafter in greater detail.
A forward wheel assembly 100 is attached at the point of connection of horizontal beam 24 and transverse strut 30 and includes a free wheeling wheel unit 102.
A coupling assembly 104 is attached to the forward end of horizontal beam 24 and provides an appropriate hitch structure 106 for attachment of the apparatus to a tow vehicle such as truck 108 shown in FIG.
1.
A forward shield 110 partially encircles drum assembly 50 to provide protection around the drum assembly.
This shield may be left off to provide visibility of the drum during rotation

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