1927 19 Dec. 24/4 The automatic record-changing Electrola-Radiola.
1943 Dec. 107/1 The spindle and turntable move left and down, which leaves the area free for the first record to drop upon the ‘floor’ of the record-changing unit.
1997 (Nexis) 18 Sept. By 1931..radiograms with automatic record-changing gear were appearing.