Method and apparatus for cutting wood
OwnerJ. Kenneth Seamaninventor
Life of this patent
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Abstract
A method and apparatus is shown for cutting logs into lumber by first cutting the logs into elongated wedge-shaped segments and then cutting the segments into boards. A pair of opposed spaced-apart chucks grip the ends of the log, and a saw mounted on a carriage makes longitudinal and radial cuts approximately to the center line of the log. The log is rotated incrementally by the chucks between cuts to produce the wedge-shaped segments. After all cuts have been made, the chucks release the segments and the segments are then resawn into boards.
Claims10
A method of cutting a log into lumber comprising:
- gripping opposed end portions of the log at a plurality of spaced-apart intervals by longitudinally compressing the log between a pair of opposed chucks, the chucks having radially extending blades for gripping the log;
- cutting the log radially and longitudinally between said spaced-apart intervals to form a plurality of wedge-shaped elongated segments;
- holding the segments at said spaced-apart intervals with said chuck blades to prevent relative movement between the segments;
- and releasing the segments after all said cuts have been made.
Apparatus for cutting a log into lumber, the apparatus comprising:
- a. a pair of opposed spaced-apart chucks adapted to hold a log longitudinally therebetween by engaging adjacent end portions of the log;
- b. means operatively coupled to the chucks for causing the chucks to grip and release the log;
- c. a saw located adjacent to the chucks and adapted to engage and cut the log radially;
- d. carriage means operatively coupled to one of the saw and the chucks for producing relative longitudinal movement between the saw and the log to cut the log longitudinally while being cut radially;
- e. rotational means operatively coupled to one of the saw and the chucks for producing relative angular rotational movement between the saw and the log between said cuts, so that the log is cut into elongated wedge-shaped segments by rotating the log between said cuts;
- and
- f. the chucks including a plurality of projections in the form of radially extending angularly spaced-apart blades adapted to partially penetrate the segment ends to prevent relative movement therebetween, thereby permitting the saw to pass partially through the chucks to complete the longitudinal cuts in the log.
Apparatus for cutting a log into lumber, the apparatus comprising:
- a. a pair of opposed spaced-apart chucks adapted to hold a log longitudinally therebetween by engaging adjacent end portions of the log;
- b. means operatively coupled to the chucks for causing the chucks to grip and release the log;
- c. a saw located adjacent to the chucks and adapted to engage and cut the log radially;
- d. carriage means operatively coupled to one of the saw and the chucks for producing relative longitudinal movement between the saw and the log to cut the log longitudinally while being cut radially;
- e. rotational means operatively coupled to one of the saw and the chucks for producing relative angular rotational movement between the saw and the log between said cuts, so that the log is cut into elongated wedge-shaped segments by rotating the log between said cuts;
- f. the chucks including a plurality of angularly spaced-apart projections adapted to partially penetrate the segment ends to prevent relative movement therebetween;
- and
- g. the chucks including a hub having elastic spacer means located therein for enabling the chuck to pivot and align with the end portions of the log.
Dependencies are inferred from the claim text.