Patents Assigned to William Barclay
  • Paper cutting attachment
    Patent number: 4693150
    Abstract: A paper cutting attachment for a drum type plotting apparatus for a computer. The attachment comprises a round slender cross-shaft adapted for mounting to the plotting apparatus. A cutter head is carried on the cross-shaft and is free to rotate and translate on the cross shaft. The cutter head has a circular cutting blade and guard means to protect the operator against injuries from the cutting blade. Means are provided for mounting the cross-shaft to the drum type plotting apparatus.
    Type: Grant
    Filed: June 28, 1985
    Date of Patent: September 15, 1987
    Assignee: William Barclay
    Inventors: William Barclay, Alexander C. Stanis