Cutlery – Pipe and rod cutters – Adapted to cut pipe or rod longitudinally
Patent
1984-11-14
1985-10-29
Bell, Paul A.
Cutlery
Pipe and rod cutters
Adapted to cut pipe or rod longitudinally
30134, 30254, B23D 2106, B26B 1306, B26B 1700
Patent
active
045493499
ABSTRACT:
A pair of cutter blades is provided for cutting sheet metal in flat tubular form. The blades are pivotally connected together in scissors-fashion so as to be capable of relative movement between each other. At least one of the blades is formed with a cutting edge comprising a piercing point or region having on each side portions which trail the leading extremity of the piercing point or region considered in the direction of cutting, whereby in operation after initial piercing of the metal to be cut, and on continued cutting, the incision made by the piercing point or region increases away from the pierced region towards the sides of the material being cut. The blades may be operated by means of a piston and cylinder device driving a pair of links connecting the piston to the two blades at positions off-set from the pivotal axis of the two blades.
REFERENCES:
patent: 2249515 (1941-07-01), Carroll
patent: 2791028 (1957-05-01), Bidin
patent: 2794250 (1957-06-01), Bethune
patent: 2870538 (1959-01-01), Townshend, Jr.
patent: 3012321 (1961-12-01), Townshend, Jr.
patent: 4283851 (1981-08-01), Wolter
patent: 4392263 (1983-07-01), Amoroso
Bell Paul A.
Heyrana Sr. Paul M.
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