Combination jig saw adjusting mechanism

Details Combination jig saw adjusting mechanism Combination jig saw adjusting mechanism

1984-04-09

1985-10-08

Watts, Douglas D.

Cutlery

Cutting tools

Saw

74 50, B27B 1102

Patent

active

045451230

ABSTRACT:
A reciprocating jigsaw tool having a plurality of selectible fixed linear plunger and blade motions as well as fully adjustable orbital and manual or auto scrolling saw blade control. A single mode selector is provided to select between the above operational modes. The mode selector includes a cam to selectively limit the oscillatory motion of a pivotally mounted plunger upper swivel bearing carriage assembly thereby directly limiting the degree of orbital plunger motion. The mode selector further includes a gear segment in operative engagement with a rack member which, in turn, engages an integral scrolling interface member of the top-mounted scrolling adjustment knob. The scrolling interface member incorporates an annular ring having a gap therein adapted to inhibit upward travel of the rack which, in turn, inhibits orbital saw operation when the plunger and blade is positioned other than in the cut forwardly position. The scrolling interface further includes locking ridges adapted to engage the rack and to preclude rotation of the scrolling adjustment knob when either the orbital or fixed linear mode is selected.

REFERENCES:
patent: 3461732 (1969-08-01), Gregory
patent: 3542097 (1970-11-01), Dudek
patent: 4137632 (1979-02-01), Planzer

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