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The Fitchburg engine (illus.) [ii] was one of a series of similar engines offered in various configurations.The steeple arrangement required a high ceiling to the engine house, but had two advantages: [6] it took up less floor space than a horizontal engine and it also required less complex masonry foundations beneath the engine.
The result was the growing dominance of the so-called "vertical" engine [25] (more correctly known as the vertical inverted direct acting engine). In this type of engine, the cylinders are located directly above the crankshaft, with the piston rod/connecting rod assemblies forming a more or less straight line between the two. [ 25 ]
A return connecting rod, [1] [2] return piston rod [i] or (in marine parlance) double piston rod engine [2] or back-acting engine is a particular layout for a steam engine. The key attribute of this layout is that the piston rod emerges from the cylinder to the crosshead , but the connecting rod then reverses direction and goes backwards to the ...
Inverted vertical engines, known commonly as marine type engines, needed less space to operate. From about 1899 Buckley & Taylor started to specialise in this type of engine. Starting with an engine for Don Mill, Middleton, they built 29 of these engines from 1899 to 1916 with a total capacity of 33,000 ihp.
The flywheels of these engines were 26 ft in diameter and weighed between 80 and 90 tons. The speed of 60 rpm and stroke of 5 ft was standard at this time. [6] Saxons built their first inverted vertical engine in 1896, a space-efficient design that became quite popular with mill builders. They built some particularly large engines.
The engines are of an inverted vertical triple-expansion type, 62 feet (19 m) tall from basement to the top of the valve casings and each weighing over 800 tons. The engines are thought to be the biggest ever built in the UK.
Slider crank mechanisms of a steam engine with a crosshead linking the piston and the crank. Crank slider mechanisms with 0 and 1.25 eccentricity. Coupler curves of a slider crank. A slider-crank linkage is a four-link mechanism with three revolute joints and one prismatic (sliding) joint. [1]
A compound steam engine unit is a type of steam engine where steam is expanded in two or more stages. [ 1 ] [ 2 ] A typical arrangement for a compound engine is that the steam is first expanded in a high-pressure (HP) cylinder , then having given up heat and losing pressure, it exhausts directly into one or more larger-volume low-pressure (LP ...