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US 4,648,778 AGranted
Log lifter
OwnerLester W. Schultzinventor
Life of this patent
Estimating the term…
Abstract
A log lifter particularly designed to elevate a portion of a large log to facilitate cutting the log into shorter lengths, wherein the log lifter includes a collapsible support frame with a hoist mechanism mounted thereon and a log gripping clamp connected with the hoist mechanism for lifting the log.
Claims5
A log lifter comprising,
- a supporting frame including first and second supporting leg structures, each generally defining separate planes and each having upper and lower ends, adapted to receive a log therebetween and extend thereabove;
- a top mounting plate fixed to the upper end of the first leg structure and having a top and bottom surface,
- a pair of depending flanges fixed in spaced-apart relation to said mounting plate and extending below the bottom surface thereof, said flanges having pivot-receiving openings therein aligned to lie in a plane parallel to the plane of the leg structure to which the mounting plate is fixed,
- a hoisting mechanism mounted on the top surface of the mounting plate,
- a log gripping unit connected to the hoisting mechanism and disposed below said mounting plate and being adapted to be removably attached to a log to grip the same,
- a connecting plate pivotally mounted between said depending flanges and fixed to the top of the second leg structure and arranged with respect to the mounting plate so that a substantial portion of the top surface of the connecting plate engages a substantial portion of the bottom surface of the mounting plate when the two leg structures are in spread-apart relation to rigidly support the two leg structures in spread-apart relation, and
- latch means connected with said two plates to positively hold the same in engaged surface-to-surface relation with the leg structures in operative spread-apart relation.
4 more elements
Dependencies are inferred from the claim text.