Cutlery – Pipe and rod cutters – Rotary
Patent
1979-04-06
1981-05-19
Simpson, Othell M.
Cutlery
Pipe and rod cutters
Rotary
30190, 30251, 30258, 81313, 81314, B23D 2106
Patent
active
RE0306134
ABSTRACT:
A shearing tool for synthetic resin tubes, in which a lower jaw is connected to the leading end of an upper handle portion, a lower handle portion is pivoted to said lower jaw at its leading end, an opening is provided in forward portion of said upper handle portion extending therefrom to the leading end of said lower jaw, an arcuate tube receiving recess is provided in the upper surface of said lower jaw, said shearing blade is pivoted in an intermediate position of the length to said upper handle portion within said opening, said shearing blade is provided at the rear and lower end with an engaging pawl, a rocking bar having notches in the upper surface is pivoted at one end to the leading end of a lower handle portion, a slot is provided in the rear portion of said shearing blade, a connection link has at one end a pin freely received within said slot and is pivoted at the other end to an intermediate position of the length of said rocking bar, a spring is provided for urging said rocking bar against said engaging pawl and a spring is provided for normally urging said upper and lower handle portions away from each other.
REFERENCES:
patent: 331787 (1885-12-01), Harlow
patent: 718796 (1903-01-01), Rose
patent: 824172 (1906-06-01), Chausse
patent: 1524197 (1925-01-01), Mayhew
patent: 1820169 (1931-08-01), Wigand
patent: 3273240 (1966-09-01), Florian
patent: 3390455 (1968-07-01), Florian
patent: 4094064 (1978-06-01), Nishikawa
Itou Hidehiko
Nakamura Masahiko
Matsuzaka Iron Works, Inc.
Simpson Othell M.
Zatarga J. T.
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