Log rocker

Details Log rocker Log rocker

2005-11-15

2005-11-15

Kramer, Dean J. (Department: 3652)

Handling: hand and hoist-line implements

Hand bars and hand barrows

Cant hook type

C294S104000, C254S131000

Reexamination Certificate

active

06964442

ABSTRACT:
A log rocker has a long lever arm with a back cylinder fulcrum at its bottom end. Also attached to the bottom end of the lever arm is a semi-circular, curved, pair of prongs and an upper, semi-circular shaped, pivoting surround arm. The surround arm has a spike at its outer end. The lever arm also has a handle at the top and a foot brace about one-third from the ground. To use the device the logger forces the pair of prongs underneath a log and then locks the log onto the rocker by rotating the upper, surround, pivot arm and driving the spike into the log to secure the device around the log. The lever can then be rotated to allow the logger to raise the log up off the ground and onto the cylindrical fulcrum for cutting.

REFERENCES:
patent: 2804 (1842-10-01), Humes
patent: 673700 (1901-05-01), Cherrington
patent: 2600577 (1952-06-01), Roe
patent: 2693935 (1954-11-01), Halbert
patent: 2718375 (1955-09-01), Purdy
patent: 2733895 (1956-02-01), Trenkle
patent: 2872888 (1959-02-01), Kearney
patent: 4221416 (1980-09-01), Piontkowski
patent: 4240657 (1980-12-01), Feighery
patent: 4368874 (1983-01-01), Weisgerber
patent: 4433829 (1984-02-01), Grover et al.
patent: 4637769 (1987-01-01), Thorndike

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