Tooth and holder assembly for a stump cutting machine

Details Tooth and holder assembly for a stump cutting machine Tooth and holder assembly for a stump cutting machine

1990-06-12

1990-12-04

Bray, W. Donald

Woodworking

Rotary cutter

Disk cutter including side attached, edge cutting bit

37 2R, 144 2N, 144241, 299 91, B27G 1304, B27C 100, B27C 900

Patent

active

049746499

ABSTRACT:
A stump cutting machine having an improved tooth and holder assembly for use in removing tree stumps. This machine has a rotatable circular blade supported by journal members. The improved cutting assemblies, each have a pair of teeth and a pair of tooth holders. Each tooth has a head portion for cutting, and a shank portion fixedly connected to the holder. The holder is fixedly connected to the blade. The head portion has a collar portion, an arch portion, and a shoulder portion. The collar portion includes a carbide tip with a front inclined surface. The arch portion includes a rear cutting face with a selected angle. The arch portion extends from the tip portion to the shoulder portion, which bears against the holder. The holder has a surface which faces the circular blade and which has a slot. The slot receives the tooth shank portion. The blade and holder are connected by bolts which apply opposite clamping forces on the shank portion. The shank portion has a rear step portion, which backs up the shoulder of the tooth head portion. The shank portion extends beyond the back of the holder assembly; and has a tapered dimension extending back from the arch portion to the end of the shank portion. The holder and tooth have complementing machine surfaces, which provide for a relatively snug fit.

REFERENCES:
patent: 3797544 (1974-03-01), Ver Ploeg
patent: 3935887 (1976-02-01), VanZante et al.
patent: 4480874 (1984-11-01), Shaw
patent: 4759394 (1988-07-01), Clemenson

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