bedplate

From bed +‎ plate.

bedplate (plural bedplates)

1. (engineering) The foundation framing or piece, by which the other parts are supported and held in place; the bed.
   • 1847, editorial staff, “MACHINE FOR PUNCHING COPPER SHEETS”, in Scientific American, series 1, Volume 3, Issue 10, page 73:

     A is a cast iron cylinder, the dots representing punching irons upon its circumference; B is a travelling bedplate or carriage on which the sheet to be punched is placed; the dots....

   • 1958 April, “British Railways First Main-Line Diesel-Hydraulic Locomotive”, in Railway Magazine, page 265:

     They are mounted on bedplates which are flexibly mounted to the underframe.

• baseplate
• bedpiece
• soleplate

• “bedplate”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.