Tool for rasping

Metal working – Filing

Patent

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Details

157 13, 407 43, 407 46, B26D 112

Patent

active

042650070

ABSTRACT:
A tool for rasping comprising a cylindrical drum rotatable in both directions around an axis, the drum being equipped with cutting elements which protrude exteriorly and are able to act in the two directions of rotation. The cutting elements are mounted on a series of movable bars disposed on the exterior surface of the drum parallel to the axis, each one of these bars having at least one transverse row of cutting elements. Each cutting element of a same row displays two parallel cutting edges provided at opposite acute angles with respect to the axis of the drum. The cutting elements of each of the rows present cutting edges which are essentially equal to those of adjacent rows but oppositely directed. The bars possess means for quick assembly onto the drum. The tool is used in preparing the exterior surface of a tire for retreading.

REFERENCES:
patent: 1379146 (1921-05-01), West et al.
patent: 2489803 (1949-11-01), Neilsen
patent: 2842833 (1958-07-01), Glodde
patent: 3618187 (1971-11-01), Jensen
patent: 3868751 (1975-03-01), Holthuis
patent: 4019234 (1977-04-01), Jensen et al.
patent: 4021899 (1977-05-01), Jensen

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