Slack takeup apparatus for an endless excavating member
First Claim
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1. An excavating device comprising;
- a support frame,at least one generally rigid circular rim having a plurality of excavating members mounted thereon,mounting means retentively movably mounting said circular rim to said frame for movement of said excavating members in a continuous circular path,said mounting means comprising a maximum of three wheels including first and second wheels mounted to said frame for rotation about stationary axes and a third wheel movable relative to said first and second wheels, all three of said wheels being circumferentially spaced on said circular rim so as to engage said circular rim for rotatable retentive emgagement therewith,said first, second, and third wheels being comprised of substantially hard rigid material,an elongated longitudinally extensible power member pivotally mounted at one of its ends to said frame and pivotally mounted at the other of its ends to said third wheel,a second elongated member pivotally connected at one end to said frame and pivotally connected at the other end to said third wheel,said third wheel movable radially outwardly of said circular rim in response to extension of said elongated power member, thereby to take up slack between said wheels and said circular rim.
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Abstract
A slack takeup apparatus for a circular excavating rim includes a support frame and first and second rim engaging wheels mounted on the support frame in spaced-apart relation for rotation about stationary axes. A third rim engaging wheel is rotatably mounted at the free end of a pivot member connected to the support frame. An extensible power member is pivotally connected to and extended between the third wheel and support frame for pivotally moving the third wheel and pivot arm to take up slack between the wheels and circular rim.
13 Citations
5 Claims
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1. An excavating device comprising;
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a support frame, at least one generally rigid circular rim having a plurality of excavating members mounted thereon, mounting means retentively movably mounting said circular rim to said frame for movement of said excavating members in a continuous circular path, said mounting means comprising a maximum of three wheels including first and second wheels mounted to said frame for rotation about stationary axes and a third wheel movable relative to said first and second wheels, all three of said wheels being circumferentially spaced on said circular rim so as to engage said circular rim for rotatable retentive emgagement therewith, said first, second, and third wheels being comprised of substantially hard rigid material, an elongated longitudinally extensible power member pivotally mounted at one of its ends to said frame and pivotally mounted at the other of its ends to said third wheel, a second elongated member pivotally connected at one end to said frame and pivotally connected at the other end to said third wheel, said third wheel movable radially outwardly of said circular rim in response to extension of said elongated power member, thereby to take up slack between said wheels and said circular rim. - View Dependent Claims (2, 3, 4, 5)
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Specification
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Current AssigneeRoscoe Brown Corporation
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Original AssigneeRoscoe Brown Corporation
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InventorsBrown, Stanley L.
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Primary Examiner(s)Crowder, Clifford D.
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Application NumberUS05/772,558Time in Patent Office554 DaysField of Search37/91, 37/94-97, 37/189, 37/190, 37/191 R, 37/191 A, 37/192 R, 37/192 A, 37/108 R, 37/83-90US Class Current37/97CPC Class CodesE02F 3/181 including a conveyorE02F 3/20 with tools that only loosen...E02F 5/08 with digging wheels turning...
