Abstract: An improvement is made to a die cutting press and to the method of die cutting in a press by providing two opposing and oppositely driven clamping bars which move together to clamp the die board and to accurately position the clamped die board at a predetermined location within the press. The press is operated to determine the adequacy of the cut produced by the die in sheet material fed into the press. If the cut is unsatisfactory, the opposing clamp bars are quickly driven apart thereby releasing the die board. The die board can be removed from the press and then manipulated or modified to cure any imperfection in the cut. The modified die board is then reinserted into the press and accurately repositioned at the predetermined location within the press by driving the opposing clamping bars towards each other against the die board.

Abstract: A simple improved rotary to linear motion mechanism for increasing the pedal leverage on a bicycle using a telescoping pedal support arm and a rotating crank-disc engaging a coupling connecting rod to convert the rotary motion of the pedal to linear extension of the pedal support arm.