A review of an engine model kit for a Sombart non-compression gas engine.
Figure 1: A period print, complete with 'Sombart' misspelled, which illustrates the engine as it appears in the Young Mechanics Own Book, printed in 1897. The engine was designed for light work and was rated in terms of manpower.
Figure 2: The Sombart model in operation
Figure 3: The model features a spool valve, elegantly finned cylinder