Motor-driven circular saw

Details Motor-driven circular saw Motor-driven circular saw

1985-07-10

1987-02-24

Meister, James M.

Cutting

Rotatable disc tool pair or tool and carrier

With means to support work relative to tool

83490, B23D 4504, B27B 506

Patent

active

046448357

ABSTRACT:
In a motor driven circular saw, a saw blade drive is provided, by which a rotary movement of a saw blade, supported on a rotary blade shaft, is superimposed by a back and forth-movement in the direction of sawing to produce a forward stroke and a backward stroke of the blade and to thus improve cutting efficiency of the saw. The saw blade drive includes a pinion at the end of a motor shaft, a first gear meshed with the pinion and supported on the saw blade shaft, a second gear meshed with the first gear and having a cam and eccentrically positioned together with the cam on a stationary axle. A coupling rod connects the cam with the saw blade shaft to impart to the latter the back-and-forth movement.

REFERENCES:
patent: 530639 (1894-12-01), Ehrhardt
patent: 2397974 (1946-04-01), Morrow et al.
patent: 3213731 (1965-10-01), Renard
patent: 3611859 (1971-10-01), Avakian
patent: 4510385 (1985-04-01), Cromeens

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