Digital curve computer for use in controlling the path of a work tool or work piece

Claim 1

A DIGITAL COMPUTER FOR COMPUTING THE COORDINATES OF A RECTILINEAR CURVE PORTION HAVING A STARTING POINT PA WHOSE COORDINATES ARE XA AND YA AND AN END POINT PE WHOSE COORDINATES ARE XE AND YE, COMPRISING, IN COMBINATION: AN X COORDINATE MAIN COMPUTER COMPENENT AND A Y COORDINATE MAIN COMPUTER COMPONENT, EACH COMPUTER COMPONENT HAVING AN ADDITION REGISTER AND A MULTIPLIER; MEANS FOR SUPPLYING THE VALUES XA AND YA TO THE ADDITION REGISTERS OF THE RESPECTIVE MAIN COMPUTER COMPONENTS; MEANS FOR SUPPLYING THE VALUES (XA-XE) AND (YA-YE) TO THE MULTIPLIERS OF THE RESPECTIVE MAIN COMPUTER COMPONENTS AND MULTIPLYING THEM THEREIN BY A FACTOR K; MEANS FOR PERIODICALLY FEEDING THE THUS-OBTAINED VALUES (XA-XE)K AND (YA-YE)K TO TE ADDITION REGISTERS OF THE RESPECTIVE MAIN COMPUTER COMPONENTS AND THERE ADDING THEM TO THE VALUES XA AND YA STORED THEREIN; AND MEANS FOR SUPPLYING THE OUTPUT OF SAID ADDITION REGISTERS TO THE OUTPUT OF THE DIGITAL COMPUTER.