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A steamroller (or steam roller) is a form of road roller – a type of heavy construction machinery used for leveling surfaces, such as roads or airfields – that is powered by a steam engine. The leveling/flattening action is achieved through a combination of the size and weight of the vehicle and the rolls : the smooth wheels and the large ...
Caterpillar soil compactor equipped with padfoot drum, being used to compact the ground before placing concrete Antique "Kemna" steamroller. A road roller (sometimes called a roller-compactor, or just roller [1]) is a compactor-type engineering vehicle used to compact soil, gravel, concrete, or asphalt in the construction of roads and foundations. [1]
Rolling schematic view Rolling visualization. In metalworking, rolling is a metal forming process in which metal stock is passed through one or more pairs of rolls to reduce the thickness, to make the thickness uniform, and/or to impart a desired mechanical property.
The overtype had a steam engine mounted on top of a fire-tube boiler, in a similar manner to a traction engine. The front of an overtype steam wagon bears a close family resemblance to traction engines, and manufacturers who made both may well have been able to use some common parts.
Mannheim Steamroller is an American neoclassical new-age music ensemble founded and directed by percussionist/composer Chip Davis in 1974. The group is known primarily for its Fresh Aire series of albums, which blend classical music with elements of new age and rock, and for its modern recordings of Christmas music.
"A few steam rollers were still being used for road maintenance in the early 1970s, and this may go some way to explaining why diesel-powered rollers are still colloquially known as steam rollers to this day." Having just watched a diesel road roller in operation it seems perfectly obvious why they are still colloquially called steam rollers.
A steam engine is a heat engine that performs mechanical work using steam as its working fluid. The steam engine uses the force produced by steam pressure to push a piston back and forth inside a cylinder. This pushing force can be transformed by a connecting rod and crank into rotational force for work.
An oscillating cylinder engine cannot be reversed by means of the valve linkage (as in a normal fixed cylinder) because there is none. Reversing of the engine can be achieved by reversing the steam connections between inlet and exhaust or, in the case of small engines, by shifting the trunnion pivot point so that the port in the cylinder lines up with a different pair of ports in the port face.