Cutlery – Cutting tools – Saw
Patent
1977-11-25
1978-12-19
Peters, Jimmy C.
Cutlery
Cutting tools
Saw
83816, B27B 1714
Patent
active
041299434
ABSTRACT:
A disc has an axial bore therethrough. A semiannular slot having a diameter smaller than that of the disc is formed through the disc with its ends on a diameter of the disc. One end of the slot is adjacent the circumference of the disc and the other end thereof is adjacent the axial bore between the bore and a point diametrically opposite that adjacent the one end of the slot. A plurality of spaced accommodation slots extend radially in mutually spaced relation in the area of approximately half the circumference of the disc. The disc is rotatably mounted for rotation via a stud passing through the slot of the chain bar of a chain saw and affixed to the housing casting of the saw. A bar pin passes through the slot of the disc and is affixed to the chain bar in a manner whereby when the disc is rotated by a tool in the accommodation slots in a manner whereby when the bar pin is given a forward thrust, the bar pin is moved thereby moving the chain bar to tighten the chain of the saw. When the bar pin is given a backward thrust, the bar pin is moved thereby permitting the chain bar to loosen the chain of the saw, by manual backward movement of the bar.
REFERENCES:
patent: 2109702 (1938-03-01), Lange
patent: 2718908 (1955-09-01), Kiekhaefer
patent: 3267973 (1966-08-01), Beard
patent: 3636995 (1972-01-01), Newman
patent: 3866320 (1975-02-01), Progl
Peters Jimmy C.
Tick Daniel Jay
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