Patents by Inventor Robert W. Brewster

Robert W. Brewster has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Automatic sawmill
    Patent number: 4204798
    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.
    Type: Grant
    Filed: October 31, 1977
    Date of Patent: May 27, 1980
    Inventors: Lyle D. Warren, Robert W. Brewster
  • Automatic sawmill
    Patent number: 4074601
    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.
    Type: Grant
    Filed: December 29, 1975
    Date of Patent: February 21, 1978
    Inventors: Lyle D. Warren, Robert W. Brewster
  • Automatic sawmill
    Patent number: 3960041
    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.
    Type: Grant
    Filed: January 21, 1974
    Date of Patent: June 1, 1976
    Inventors: Lyle D. Warren, Robert W. Brewster