Jig saw with orbital mechanism

Details Jig saw with orbital mechanism Jig saw with orbital mechanism

1983-04-19

1985-04-23

Peters, Jimmy C.

Cutlery

Cutting tools

Saw

74 50, B27B 1102

Patent

active

045120781

ABSTRACT:
A jig saw has a pivotally mounted reciprocating saw blade assembly which is reciprocated by a drive shaft. A pendular stroke device generates an additional feed movement of the saw blade. The pendular stroke device comprises a rod like element reciprocating in a direction substantially parallel to the direction of reciprocation of the saw blade, a rotatable drive element driven by the drive shaft, and a pivotally mounted engagement element against which the saw blade assembly is spring biased. The rod like element is coupled to the rotatable drive element and acts to pivot the engagement element to pivot the saw blade assembly. The pivotal axis of the engagement element is displaceable to change the spacing between the engagement element and the rod like element to determine the degree of or eliminate pivoting of the saw blade assembly. Preferably, the engagement element is pivotally mounted on an eccentric formed on a shaft which has a handle for adjustably rotating the shaft. In this way, when the pivotal feed movement is eliminated, the saw blade is not caused to slope in an oblique position.

REFERENCES:
patent: 2775272 (1956-12-01), Papworth
patent: 3269197 (1966-08-01), Enders
patent: 3890708 (1975-06-01), Bauer
patent: 4137632 (1979-02-01), Pfanzer
patent: 4262421 (1981-04-01), Bergler

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