" The wings are moved several times by hand to charge the crank chamber with mixture, which flows on through the external pipe and inlet valve to the compression space and cylinder. "
- Lawrence Hargrave

The quote discusses the process of manually charging a crank chamber with fuel mixture in an engine. This involves moving the wings or equivalent parts by hand, which allows the fuel and air mixture to flow through external pipes and valves into specific chambers within the engine. The goal is to prepare the engine for operation by ensuring that all necessary components are properly charged and ready to function.

On a deeper level, this quote reflects the intricate mechanics involved in early engines and highlights the manual effort required before these machines could run autonomously. It underscores the importance of precise preparation and the understanding of internal mechanisms to achieve successful ignition and efficient running. The description also speaks to the ingenuity and perseverance of engineers who developed such complex systems at a time when technology was far less advanced than today. This process was not just about moving parts but understanding the interplay between different components of the engine, showcasing the meticulous nature of early engineering.

Lawrence Hargrave, the author of this quote, was an Australian engineer and inventor renowned for his contributions to aviation and aeronautics in the late 19th century. He is particularly known for pioneering research on cellular kites and the creation of rotary engines, which were crucial steps towards developing practical aircraft during that era. His work laid foundational principles for modern aviation technology and engineering practices.