Historical Steam Engine Diagram - Mechanical Engineering Blueprint #117343 (License: Personal Use)

This precise engineering illustration depicts a horizontal steam engine with a double-acting cylinder, slide valve mechanism, and surface condenser. Key parts include the steam chest (B), governor (top right), and connecting rods (J), all annotated for educational or archival reference. The drawing reflects late 19th-century industrial design principles used in locomotives and factory power systems.

Used in technical history articles, museum exhibits, engineering education resources, or patent documentation; targets users researching mechanical engineering evolution, steam technology, or industrial revolution machinery.