By Clutch Patents (Class 40/355)
  • Patent number: 5185947
    Abstract: A line-guide advancement mechanism for copyholders of the type for holding a document containing information to be transcribed and containing a linearly moveable line-guide for highlighting individual lines of information. The line-guide advancement unit is structured to be able to fixably attach to an existing copyholder (10) and a line-guide (46). The unit contains a drive mechanism (12) and an operator's foot pedal (20) which provide step-wise movement to the line-guide (46). The drive mechanism (12) can be adjusted via a knob (36) and vernier scale (74) to provide a wide range of spacings in the movement of the line-guide.
    Type: Grant
    Filed: July 29, 1991
    Date of Patent: February 16, 1993
    Inventors: David B. Thompson, Linda L. Thompson