Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Rolling or rotatable-type bit mount
Patent
1997-04-17
1999-03-23
Bagnell, David J.
Mining or in situ disintegration of hard material
Cutter tooth or tooth head
Rolling or rotatable-type bit mount
299 871, E21C 3519
Patent
active
058849793
ABSTRACT:
Cutting bit holding elements removably receiving cutting bits are secured to a cutting assembly used in a roadway surface reclaiming machine. The cutting assembly includes a driven member having a surface, typically cylindrical, rotatable in a cutting direction. The surface includes a plurality of recesses arranged in a preselected pattern, each recess being defined by a generally circular upper edge and including a bottom surface depressed below the driven member rotatable surface. Each cutting bit holding element has a body portion having at least one aperture receiving the cutting bit and a lower portion having a generally cylindrical outer surface sized to be received in only one of said recesses The lower portion has a reference lower end abutting the recess bottom surface with a locating element engaging the cutting bit holder element lower end with a niche within said recess for orienting the cutting bit holder with respect to said cutting direction. An edge of the cutting bit holding element is sized to be proximal to the recess circular upper edge to permit fixed attachment of the body portion to the driven member rotatable surface at a location spaced away for the reference lower end so that, upon replacement of the cutting bit holding element, the reference surface and locating element receiving niche remain undisturbed to ensure proper alignment of replacement structure.
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Bagnell David J.
Keystone Engineering & Manufacturing Corporation
Reynolds Locke
LandOfFree
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