Keywords: Compound engine with both piston and slide valves (Heat Engines, 1913).png Compound engine with both piston and slide valves Compound_engine_with_both_piston_and_slide_valves_ Heat_Engines _1913 jpg 2010-07-27 19 32 UTC Scan from Prof William Ripper Sheffield Univ d 1937 see source file Original file scan and upload Andy Dingley scanner derivative work Ariadacapo <span class signature-talk >talk</span> Sharpened cleaned-up image and changed to PNG including transparency Ariadacapo Compound_engine_with_both_piston_and_slide_valves_ Heat_Engines _1913 jpg PD-old Original upload log This image is a derivative work of the following images File Compound_engine_with_both_piston_and_slide_valves_ Heat_Engines _1913 jpg licensed with PD-old 2009-06-11T14 39 37Z Andy Dingley 547x350 32869 Bytes <nowiki>rotated to square</nowiki> 2009-06-10T18 15 16Z Andy Dingley 552x357 42406 Bytes <nowiki> Scans from 'Heat Engines' 1913 </nowiki> Uploaded with derivativeFX Compound steam engines Cross-compound steam engines Scans from 'Heat Engines' 1913 Scans from 'Heat Engines' 1913/undescribed Steam engines with piston valves Steam engines with slide valves |