Cutlery – Cutting tools – Saw
Patent
1992-01-23
1993-04-27
Watts, Douglas D.
Cutlery
Cutting tools
Saw
B23D 4904
Patent
active
052050432
ABSTRACT:
FIG. 2 shows a jigsaw in which pendulum motion in imparted on the blade (24) (see FIG. 1) by a bell crank lever (28) mounting a support wheel (26). The lever (28) is actuated by pin (34) passing through adjustment shaft (36). The pin (34) is actuated by fork lever (42) journalled around circular cam surface (48) and pivoted on axis (44). Cam surface (48) is eccentrically mounted on gear shaft axis (10). Rotational adjustment of shaft (36), which changes amplitude of reciprocation of pin (34) responsive to fork lever cam surface (54) is effected by pin (60) passing through shaft (36) and pivotally mounted in slide switch (70). Arrangement allows for compact design of saw.
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Batt Dennis M.
Briggs Alan W.
Black & Decker Inc.
Dearing Dennis A.
Del Ponti John D.
Heyrana Paul M.
Watts Douglas D.
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