Sawmill carriage log turner
OwnerDaniel Yoderinventor
Life of this patent
Estimating the term…
Abstract
This invention attaches to a sawmill carriage, enabling an operator to turn a log carried by the sawmill carriage without having to return the sawmill carriage to a fixed location. The invention includes a log turning hook with positioning guide bar that slides vertically with respect to, and pivots with, a cylinder. As the turning hook with positioning guide bar is lifting the log, the weight of the log is forcing the hook with positioning guide bar to pivot, which rotates the log ninety degrees into position for the next saw cut.
Claims5
A log carriage, having first and second clamping hooks mounted on the carriage for clamping a log to be sawed, each of said clamping hooks being pivotable about its respective pivot axis, the improvement comprising:
- a log turner mounted on said carriage;
- said log turner including a cylinder pivotably mounted on said carriage so as to pivot about a turning hook pivot axis that is substantially parallel to the pivot axes of the clamping hooks;
- a piston rod projecting from said cylinder;
- and a third movable hook, mounted on said carriage so as to move with said piston rod, wherein, when a log is mounted on the carriage, and the clamping hooks are released from the log, the log will contact the third movable hook, which, as the piston rod is retracted, will pivot about the turning hook pivot axis, in order to cause the log to roll.
A log carriage, including a front, log-contacting face;
- and first and second clamp hooks projecting forward, beyond said front, log-contacting face, at least one of said clamp hooks movable relative to the other for gripping a log between the first and second clamp hooks;
- and a log turning hook mounted as a pendulum on said carriage so as to swing freely about a log turning hook pivot axis, wherein, in a resting position, said log turning hook extends forward of said front, log-contacting face.
Dependencies are inferred from the claim text.