Automatic sawmill
OwnerLyle D. Warren, Robert W. Brewsterinventors
Life of this patent
Estimating the term…
Abstract
In an automatic sawmill, a caliper device measures the diameter of an incoming log and the log is then positioned against a pair of backstands over a log receiving carriage. A plurality of cutting devices are positioned relative to the carriage, and the speed control for the carriage is predetermined, in response to the log diameter. The diameter measurement is supplied to data processing circuitry which provides outputs indicative of "sets" to be taken by the aforementioned backstands and cutting devices for sawing the log into a number of cants, boards, or slabs in a manner making optimum use of the log content.
Claims17
Sawmill apparatus comprising:
- cutting means, and carriage means for receiving a log and propelling the same substantially longitudinally with respect to said cutting means,
- backstand means movable in a direction normal to said carriage means to provide for positioning of said log relative to said carriage means,
- charger means for moving a log substantially in the direction of said backstand means to a position where the log is substantially aligned with a position determined by said backstand means,
- said carriage means having log engaging means associated therewith for engaging said log in the aligned position thereof so that said carriage means can propel said log substantially longitudinally with respect to the cutting means,
- and means for measuring said log and in response thereto moving said backstand means to a position relative to the cutting means for making predetermined cuts in said log positioned relative to the side of said log in accordance with the measured dimension of said log.
Dependencies are inferred from the claim text.