Power driven saw with reciprocating saw blades

Details Power driven saw with reciprocating saw blades Power driven saw with reciprocating saw blades

1987-10-30

1990-11-13

Yost, Frank T.

Cutlery

Cutting tools

Saw

30355, 30392, 83821, B27B 1902

Patent

active

049692704

ABSTRACT:
A power saw has two oppositely reciprocating saw blades guided and supported in a receiving slot in a support plate. The blades are supported during sawing along shoulders on their outside by lower edges of support sections of the support plate. The arrangement is such that forces generated in operation during cutting press the saw blades together in the area of their teeth. This prevents saw dust, chippings etc. penetrating between the two saw blades. Preferably, the thickness of the saw blade shoulders are not greater than half the thickness of the saw blades, and preferably no greater than the thickness of the support section edges. The teeth of the saw blades may be so ground and arranged that the resultant force on the teeth during cutting also forces the saw blades together at their teeth.

REFERENCES:
patent: 1491134 (1924-04-01), De Northall
patent: 1789804 (1931-01-01), Broillet
patent: 2534001 (1950-12-01), Couse
patent: 2784751 (1957-03-01), Alexander
patent: 2840125 (1958-06-01), Kirksey
patent: 2895514 (1959-07-01), Wright
patent: 3716916 (1973-02-01), Alexander
patent: 4665618 (1987-05-01), Leini
patent: 4784034 (1988-11-01), Stones et al.
patent: 4798001 (1989-01-01), Grossmann et al.

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