Wheelwright machines – Grooving – slitting and/or lacerating of rubber tires
Patent
1976-04-22
1978-09-26
Jones, Jr., James L.
Wheelwright machines
Grooving, slitting and/or lacerating of rubber tires
51 5B, B29H 2108
Patent
active
041162560
ABSTRACT:
Apparatus for preparing the peripheral surface of a tire casing to receive tread material for recapping or retreading the tire casing. The apparatus has two or more buffing wheels, a first being a rough cutter for removing, say, 90 percent of the old rubber, and one or more others which have finer cutting or grinding means on their surfaces, called "texturizing" wheels and/ or "finishing" wheels to so buff the surface of the casing, or selected parts thereof, that the new tread stock will adhere satisfactorily to the buffed crown and shoulder areas of the casing and also to produce a finer surface finish at the junction of the new tread and the old casing for the sake of good appearance. The apparatus also has a power driven mandrel mechanism or rim upon which the casing is mounted for rotation on its normal axis. The rim is carried on an articulated frame which is pivotable or swingable on or about an axis or axes extending normally to the casing axis and which is movable to translate the casing toward and away from the cutting wheels. The movement of the casing into and during engagement with the cutting wheels is controlled by a tire profile template for the particular size and shape of the casing to be retreaded, as modified by the style or type of the tread to be applied. The template engages a guide surface which normally lies in a plane that is tangential to the surfaces of the cutting wheels. The guide surface may be shifted radially of the cutting wheels as needed in order to further enable the finer texturizing wheels to finish the shoulder areas of the casing as they blend into the sidewalls of the casing, or to enable the casing to be buffed further, for example, to remove more than the usual thickness of old rubber from the surfaces of a casing which has been damaged or to finish a casing of less than standard cross-sectional width.
REFERENCES:
patent: 2610446 (1952-09-01), Hawkinson
patent: 2945534 (1960-07-01), Hawkinson
patent: 2965162 (1960-12-01), Hawkinson
patent: 2985231 (1961-05-01), Roesch
patent: 3117047 (1964-01-01), Capistrant et al.
patent: 3584673 (1971-06-01), Lehmann
patent: 3877506 (1975-04-01), Mattox et al.
Cole Leon Jay
Morris Jerry M.
Rawls Vaughn
Jones Jr. James L.
National-Standard Company
Smith James G.
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