Heavy duty jig saw

Details Heavy duty jig saw Heavy duty jig saw

1975-10-20

1976-09-28

Whitehead, Harold D.

Stone working

Sawing

Reciprocating

173 32, 408 76, B28D 106, B23B 4514

Patent

active

039825213

ABSTRACT:
The Present heavy duty jig saw is constructed for cutting through walls of concrete, masonry, and the like. For this purpose a somewhat elongated suction bell carries a guide bar secured to one longer side of the bell. The guide bar in turn carries tool carrier means which are movable back and forth along the guide bar by a separate hydraulic drive. The tool carrier supports a tool head which is reciprocable by a second hydraulic drive. The suction bell is provided with a sealing skirt around its open edge and preferably adjustable legs secured to the bell limit the elastic deformation of the sealing skirt.

REFERENCES:
patent: 3456738 (1969-07-01), Harry
patent: 3722497 (1973-03-01), Hiestand

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