Reciprocal saw attachment for power output shaft and portable dr

Details Reciprocal saw attachment for power output shaft and portable dr Reciprocal saw attachment for power output shaft and portable dr

1981-02-18

1983-03-29

Peters, Jimmy C.

Cutlery

Cutting tools

Saw

30 92, 30500, 30392, B27B 1909

Patent

active

043779093

ABSTRACT:
Driven and idle sprocket wheels are journaled in aligned relation for rotation about spaced apart parallel axes and a chain is trained over the sprocket wheels. The sprocket wheels are journaled from a support structure and the latter includes an elongated support member guidingly supported therefrom for rectilinear reciprocation along a path generally paralleling the reaches of the chain extending between the sprocket wheels. The support member includes structure for supporting a hacksaw blade or other similar elongated cutting tool therefrom in position generally paralleling the support member and also includes laterally extending guide structure supported therefrom defining an elongated slot extending generally normal to the support member and the chain includes a laterally projecting pin rotatably and slidably received in the guide structure slot, whereby orbital movement of the chain supported pin about the sprocket wheels will effect longitudinal reciprocation of the support member in a manner such that the support member is initially gradually accelerated to a predeterminined speed of movement in a first direction, thereafter maintained at that speed of movement in the first direction and subsequently gradually decreased in speed before being gradually accelerated in the opposite direction. Clamp structure is provided for supporting a portable drill in position for driving connection of its output shaft with one of the sprocket wheels.

REFERENCES:
patent: 817513 (1906-04-01), Parker
patent: 1997619 (1935-04-01), Windle
patent: 2282728 (1942-05-01), Kern
patent: 2329729 (1943-09-01), Saucke
patent: 2563069 (1951-08-01), Roberts
patent: 2794463 (1957-06-01), Ford
patent: 3834019 (1974-09-01), Smeltzer
patent: 4317280 (1982-03-01), Krieg

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