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2. Stephenson valve gear - Wikipedia

   en.wikipedia.org/wiki/Stephenson_valve_gear

   During the 1830s, the most popular valve drive for steam locomotives was known as gab motion in the United Kingdom and V-hook motion in the United States. [3] The gab motion incorporated two sets of eccentrics and rods for each cylinder; one eccentric was set to give forward and the other backwards motion to the engine and one or the other could accordingly engage with a pin driving the ...

3. Walschaerts valve gear - Wikipedia

   en.wikipedia.org/wiki/Walschaerts_valve_gear

   The Walschaerts valve gear on a Pennsylvania Railroad E6s. To lay out Walschaerts gear, the proportions of the combination lever must be chosen. A displacement of the union link end by half the piston travel must cause a valve rod displacement of the valve lead plus the valve lap.

4. Kuhn slide - Wikipedia

   en.wikipedia.org/wiki/Kuhn_slide

   4. Lifting link 5. Lifting arm 7. Expansion link 8. Radius rod Kuhn slide on a Deutsche Reichsbahn DR Class 65.10 Neubaulok. The Kuhn slide (German: Kuhnsche Schleife) is part of a modified Walschaerts (German: Heusinger) valve gear on steam locomotives [1] and is named after its inventor, Michael Kuhn (1851–1903). The term is also used to ...

5. Steam locomotive components - Wikipedia

   en.wikipedia.org/wiki/Steam_locomotive_components

   Coupling rods / Side rods Connect the driving wheels (43) together. [2] [5] [6]: 276 [3]: 71 Valve gear Motion (UK+) System of rods and linkages synchronising the valves with the pistons and controls the running direction and power of the locomotive. [2] [6]: 281–356 [3]: 89 Connecting rod / Main rod

6. Gresley conjugated valve gear - Wikipedia

   en.wikipedia.org/wiki/Gresley_conjugated_valve_gear

   LNER Class V2 4771 Green Arrow.Note Gresley conjugated valve gear located ahead of the piston valves, driven from the valve spindles. The Gresley conjugated valve gear is a valve gear for steam locomotives designed by Sir Nigel Gresley, chief mechanical engineer of the LNER, assisted by Harold Holcroft.

7. Hackworth valve gear - Wikipedia

   en.wikipedia.org/wiki/Hackworth_valve_gear

   The Hackworth valve gear is a design of valve gear used to regulate the flow of steam to the pistons in steam engines. It is a radial gear , with an actuating lever driven from the crank. The drive may be taken directly from the crank or indirectly via a return crank (as in all pictures).