In the coming pages I will be describing steam engines in detail, using their technical terms. To aid in your understanding please spend a few minutes looking at the exploded view below and numbered names. Ne aware that some items are known by different names I have included a couple of variations but there are more out there so bear with me.
1 Cylinder Cladding 2 Cylinder 4 Piston 6 Piston Rod 7 Cylinder Bottom Cap 9 Piston Rod Gland 13 Crosshead 17 Standard 21 Cylinder Top Cap 25 Valve Rod 27 Valve Rod Guide 28 Valve Rod Gland 29 Valve Chest AKA Steam Chest 35 Valve 38 Valve Chest Cover AKA Steam Chest Cover
42 Crosshead Guides 44 Soleplate 45 Boxbed 48 Crankshaft 49 Crank Webs 50 Connecting Rod 51 Big End Bearing 54 Crankshaft Bearing & Top Cap 57 Flywheel 59 Eccentric Sheave 61 Eccentric Rod 62 & 65 Eccentric Straps 68 Rod 74 Small End Pin