1911 XXI. 36/2 Pedal clarinet, a contrabass instrument invented in 1891 by M. F. Besson to complete the quartet of clarinets..; it is constructed on practically the same principles as the clarinet, and consists of a tube 10 ft. long..doubled up twice upon itself.
1966 27 Oct. 632/2 He includes such rare instruments as..pedal-clarinet.