The Bristol Hercules was a 14-cylinder two-row radial aircraft engine designed by Sir Roy Fedden and produced by the Bristol Engine Company starting in 1939. It was the first of their single sleeve valve designs to see widespread use, powering many aircraft in the mid-World War II timeframe.
A four-strokeengine is an internal combustion (IC) engine in which the piston completes four separate strokes while turning the crankshaft. A stroke refers to the full travel of the piston along the cylinder, in either direction. The four separate strokes are termed:
- Intake: Also known as induction or suction. This stroke of the piston begins at top dead center (T.D.C.) and ends at bottom dead center (B.D.C.). In this stroke the intake valve must be in the open position while the piston pulls an air-fuel mixture into the cylinder by producing vacuum pressure into the cylinder through its downward motion. The piston is moving down as air is being sucked in by the downward motion against the piston.
- Compression: This stroke begins at B.D.C, or just at the end of the suction stroke, and ends at T.D.C. In this stroke the piston compresses the air-fuel mixture in preparation for ignition during the power stroke (below). Both the intake and exhaust valves are closed during this stage.
- Combustion: Also known as power or ignition. This is the start of the second revolution of the four stroke cycle. At this point the crankshaft has completed a full 360 degree revolution. While the piston is at T.D.C. the compressed air-fuel mixture is ignited by a spark plug or by heat generated by high compression, forcefully returning the piston to B.D.C. This stroke produces mechanical work from the engine to turn the crankshaft.
- Exhaust: Also known as outlet. During the exhaust stroke, the piston, once again, returns from B.D.C. to T.D.C. while the exhaust valve is open. This action expels the spent air-fuel mixture through the exhaust valve.
Producer gas is fuel gas that is manufactured from material such as coal, as opposed to natural gas. It can be produced from various fuels by partial combustion with air, usually modified by simultaneous injection of water or steam to maintain a constant temperature and obtain a higher heat content gas by enrichment of air gas with hydrogen. In this respect it is similar to other types of "manufactured" gas, such as coal gas, coke oven gas, water gas and carburetted water gas. Producer gas was used primarily as an industrial fuel for iron and steel manufacturing, such as firing coke ovens and blast furnaces, cement and ceramic kilns, or for mechanical power through gas engines. It was characteristically low in heating value but cheap to make, so that large amounts could be made and burned.
A pumpjack is the overground drive for a reciprocating piston pump in an oil well.
A stationary engine is an engine whose framework does not move. They are used to drive immobile equipment, such as pumps, generators, mills or factory machinery. The term usually refers to large immobile reciprocating engines, principally stationary steam engines and, to some extent, stationary internal combustion engines. Other large immobile power sources, such as steam turbines, gas turbines, and large electric motors, are categorized separately.
A concrete mixer is a device that homogeneously combines cement, aggregate such as sand or gravel, and water to form concrete. A typical concrete mixer uses a revolving drum to mix the components. For smaller volume works, portable concrete mixers are often used so that the concrete can be made at the construction site, giving the workers ample time to use the concrete before it hardens. An alternative to a machine is mixing concrete by hand. This is usually done in a wheelbarrow; however, several companies have recently begun to sell modified tarps for this purpose.
Hercules is the Roman adaptation of the Greek mythological hero Heracles.
The Allison T56 is an American single-shaft, modular design military turboprop with a 14-stage axial flow compressor driven by a four-stage turbine. It was originally developed by the Allison Engine Company for the Lockheed C-130 Hercules transport entering production in 1954. It has been a Rolls-Royce product since 1995 when Allison was acquired by Rolls-Royce. The commercial version is designated 501-D. Over 18,000 engines have been produced since 1954, logging over 200 million flying hours.
Autogas is the common name for liquefied petroleum gas (LPG) when it is used as a fuel in internal combustion engines in vehicles as well as in stationary applications such as generators. It is a mixture of propane and butane.
Jay Rifkin is a music and film producer.
A hit-and-miss engine is a type of four-stroke internal combustion engine that is controlled by a governor to operate at a set speed. It was conceived in the late 19th century and produced by various companies from the 1890s through approximately the 1940s. The name comes from the speed control on these engines: they fire ("hit") only when operating at or below a set speed, and cycle without firing ("miss") when they exceed their set speed. This is as compared to the "throttle governed" method of speed control. The sound made when the engine is running without a load is a distinctive "POP whoosh whoosh whoosh whoosh POP" as the engine fires and then coasts until the speed decreases and it fires again to maintain its average speed.
Rajasthan is a mineral-rich state and has a diversified economy having agriculture, mining and tourism as its main engines of growth. The state mines produce gold, silver, sandstone, limestone, marble, rock phosphate, copper and lignite. It is the second largest producer of cement and contributes one tenth of the salt produced in India.
Compression Systems, one of five organizational groups within Cameron International Corporation, is a provider of reciprocating and centrifugal compression equipment and aftermarket parts and services. Reciprocating compression equipment is used throughout the energy industry by gas transmission companies, compression leasing companies, oil and gas producers and independent power producers. Integrally geared centrifugal compressors are used by customers around the world in a variety of industries such as air separation, auto making, glass blowing, PET, petrochemical and chemical. Reciprocating compression was sold to GE Oil and Gas in June 2014.
Grupo Argos S.A is a Colombian conglomerate with large investments in the cement and energy industries. Its cement company Argos has operations in Colombia, the United States, Panamá, Honduras and the Caribbean. Celsia, its energy company, owns hydro, thermal, and wind power generation plants in Colombia, Panamá, and Costa Rica and distributes energy to more than 500.000 customers in Colombia. Grupo Argos also has investments in port facilities and real estate in Colombia.
The Fostoria Glass Company manufactured pressed, blown and hand-molded glassware and tableware for almost 100 years. It began operations in Fostoria, Ohio, on December 15, 1887, on land donated by the townspeople. The new company was formed by men from West Virginia, who were experienced in the glassmaking business. They started their company in northwest Ohio to take advantage of newly discovered natural gas that was an ideal fuel for glassmaking. Numerous other businesses were started in the area, and the supply of natural gas began to diminish. Fuel shortages caused the company to move to Moundsville, West Virginia in 1891.
The Lister D is a 1 1/2 hp stationary engine built between 1926-1964 by R A Lister and Company of Dursley. It is popular with newcomers to the stationary engine hobby with un-restored examples available for as little as £100, plenty of spares and various re-manufactured parts and decals.
Dawood Hercules Corporation Limited is a Pakistani investment company which is based in Karachi, Pakistan. It has diversified holdings in Energy and Foods.
Seneca Glass Company used to be the largest manufacturer of tumblers in the United States. The company was also known for its high-quality lead stemware, which was hand-made for nearly a century. Customers included Eleanor Roosevelt, Lyndon Johnson, the president of Liberia, the Ritz Carlton Hotel, Tiffany's, and Neiman-Marcus.
The South African Railways gas-electric locomotive of 1923 was an experimental gas-electric locomotive. The fuel, suction gas, was generated on-board the locomotive from coal.
Hercules Engine Corporation was an American engine manufacturer located in Canton, Ohio.
