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1 Priestman, William Dent
SUBJECT AREA: Steam and internal combustion engines[br]b. 23 August 1847 Sutton, Hull, Englandd. 7 September 1936 Hull, England[br]English oil engine pioneer.[br]William was the second son and one of eleven children of Samuel Priestman, who had moved to Hull after retiring as a corn miller in Kirkstall, Leeds, and who in retirement had become a director of the North Eastern Railway Company. The family were strict Quakers, so William was sent to the Quaker School in Bootham, York. He left school at the age of 17 to start an engineering apprenticeship at the Humber Iron Works, but this company failed so the apprenticeship was continued with the North Eastern Railway, Gateshead. In 1869 he joined the hydraulics department of Sir William Armstrong \& Company, Newcastle upon Tyne, but after a year there his father financed him in business at a small, run down works, the Holderness Foundry, Hull. He was soon joined by his brother, Samuel, their main business being the manufacture of dredging equipment (grabs), cranes and winches. In the late 1870s William became interested in internal combustion engines. He took a sublicence to manufacture petrol engines to the patents of Eugène Etève of Paris from the British licensees, Moll and Dando. These engines operated in a similar manner to the non-compression gas engines of Lenoir. Failure to make the two-stroke version of this engine work satisfactorily forced him to pay royalties to Crossley Bros, the British licensees of the Otto four-stroke patents.Fear of the dangers of petrol as a fuel, reflected by the associated very high insurance premiums, led William to experiment with the use of lamp oil as an engine fuel. His first of many patents was for a vaporizer. This was in 1885, well before Ackroyd Stuart. What distinguished the Priestman engine was the provision of an air pump which pressurized the fuel tank, outlets at the top and bottom of which led to a fuel atomizer injecting continuously into a vaporizing chamber heated by the exhaust gases. A spring-loaded inlet valve connected the chamber to the atmosphere, with the inlet valve proper between the chamber and the working cylinder being camoperated. A plug valve in the fuel line and a butterfly valve at the inlet to the chamber were operated, via a linkage, by the speed governor; this is believed to be the first use of this method of control. It was found that vaporization was only partly achieved, the higher fractions of the fuel condensing on the cylinder walls. A virtue was made of this as it provided vital lubrication. A starting system had to be provided, this comprising a lamp for preheating the vaporizing chamber and a hand pump for pressurizing the fuel tank.Engines of 2–10 hp (1.5–7.5 kW) were exhibited to the press in 1886; of these, a vertical engine was installed in a tram car and one of the horizontals in a motor dray. In 1888, engines were shown publicly at the Royal Agricultural Show, while in 1890 two-cylinder vertical marine engines were introduced in sizes from 2 to 10 hp (1.5–7.5 kW), and later double-acting ones up to some 60 hp (45 kW). First, clutch and gearbox reversing was used, but reversing propellers were fitted later (Priestman patent of 1892). In the same year a factory was established in Philadelphia, USA, where engines in the range 5–20 hp (3.7–15 kW) were made. Construction was radically different from that of the previous ones, the bosses of the twin flywheels acting as crank discs with the main bearings on the outside.On independent test in 1892, a Priestman engine achieved a full-load brake thermal efficiency of some 14 per cent, a very creditable figure for a compression ratio limited to under 3:1 by detonation problems. However, efficiency at low loads fell off seriously owing to the throttle governing, and the engines were heavy, complex and expensive compared with the competition.Decline in sales of dredging equipment and bad debts forced the firm into insolvency in 1895 and receivers took over. A new company was formed, the brothers being excluded. However, they were able to attend board meetings, but to exert no influence. Engine activities ceased in about 1904 after over 1,000 engines had been made. It is probable that the Quaker ethics of the brothers were out of place in a business that was becoming increasingly cut-throat. William spent the rest of his long life serving others.[br]Further ReadingC.Lyle Cummins, 1976, Internal Fire, Carnot Press.C.Lyle Cummins and J.D.Priestman, 1985, "William Dent Priestman, oil engine pioneer and inventor: his engine patents 1885–1901", Proceedings of the Institution ofMechanical Engineers 199:133.Anthony Harcombe, 1977, "Priestman's oil engine", Stationary Engine Magazine 42 (August).JBBiographical history of technology > Priestman, William Dent
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2 system
система; комплекс; средство; способ; метод; сеть (напр. дорог) ;aiming-navigation system (analog, digital) — прицельно-навигационная система (аналоговая, цифровая)
air observation, acquisition and fire control system — (бортовая) система воздушной разведки, засечки целей и управления огнем
air support aircraft ECM (equipment) system — (бортовая) система РЭП для самолетов авиационной поддержки
airborne (ground) target acquisition and illumination laser system — ав. бортовая лазерная система обнаружения и подсветки (наземных) целей
airborne (ground) targeting and laser designator system — ав. бортовая лазерная система обнаружения и целеуказания (наземных целей)
airborne laser illumination, ranging and tracking system — ав. бортовая система лазерной подсветки, определения дальности и сопровождения цели
artillery (nuclear) delivery system — артиллерийская система доставки (ядерного) боеприпаса (к цели)
C2 system — система оперативного управления; система руководства и управления
C3 system — система руководства, управления и связи; система оперативного управления и связи
channel and message switching (automatic) communications system — АСС с коммутацией каналов и сообщений
country-fair type rotation system (of instruction) — метод одновременного обучения [опроса] нескольких учебных групп (переходящих от одного объекта изучения к другому)
dual-capable (conventional/nuclear) weapon delivery system — система доставки (обычного или ядерного) боеприпаса к цели
electromagnetic emitters identification, location and suppression system — система обнаружения, опознавания и подавления источников электромагнитных излучений [излучающих РЭС]
field antimissile (missile) system — полевой [войсковой] ПРК
fire-on-the-move (air defense) gun system — подвижный зенитный артиллерийский комплекс для стрельбы в движении [на ходу]
fluidic (missile) control system — ркт. гидравлическая [струйная] система управления полетом
forward (area) air defense system — система ПВО передового района; ЗРК для войсковой ПВО передового района
graduated (availability) operational readiness system — Бр. система поэтапной боевой готовности (частей и соединений)
high-resolution satellite IR detection, tracking and targeting system — спутниковая система с ИК аппаратурой высокой разрешающей способности для обнаружения, сопровождения целей и наведения средств поражения
ICBM (alarm and) early warning satellite system — спутниковая система обнаружения пусков МБР и раннего предупреждения (средств ПРО)
information storage, tracking and retrieval system — система накопления, хранения и поиска информации
instantaneous grenade launcher (armored vehicle) smoke system — гранатомет (БМ) для быстрой постановки дымовой завесы
Precision Location [Locator] (and) Strike system — высокоточная система обеспечения обнаружения и поражения целей; высокоточный разведывательно-ударный комплекс
rapid deceleration (parachute) delivery system — парашютная система выброски грузов с быстрым торможением
real time, high-resolution reconnaissance satellite system — спутниковая разведывательная система с высокой разрешающей способностью аппаратуры и передачей информации в реальном масштабе времени
received signal-oriented (output) jamming signal power-adjusting ECM system — система РЭП с автоматическим регулированием уровня помех в зависимости от мощности принимаемого сигнала
sea-based nuclear (weapon) delivery system — система морского базирования доставки ядерного боеприпаса к цели
small surface-to-air ship self-defense (missile) system — ЗРК ближнего действия для самообороны корабля
Status Control, Alerting and Reporting system — система оповещения, контроля и уточнения состояния [боевой готовности] сил и средств
surface missile (weapon) system — наземный [корабельный] РК
target acquisition, rapid designation and precise aiming system — комплекс аппаратуры обнаружения цели, быстрого целеуказания и точного прицеливания
— ABM defense system— antimissile missile system— central weapon system— countersurprise military system— laser surveying system— tank weapon system— vertical launching system— weapons system -
3 rotary
n (AmE) (cf roundabout BrE )AUTO, CONST, TRANSP, VEH glorieta f, rotonda f -
4 station
1) станция; пункт3) геофиз. пункт наблюдений5) устройство; блок7) горн. околоствольный двор8) ж.-д. станционные сооружения11) мор. точка пересечения шпангоута с основной линией12) устанавливать, ставить13) экол. ареал•station on stream — работающая ( насосная или компрессорная) станция на трубопроводе-
aboveground power station
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aboveground station
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accepting station
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accumulator station
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actinometric station
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aerobraked OTV-serviced space station
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aerodynamic broadcast station
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aeronautical meteorological station
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affiliated station
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air monitoring station
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airborne early-warning station
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alighting station
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anchor station
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AOTV-serviced space station
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array station
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arrival station
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assembly station
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assembly work station
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astronaut tended space station
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astronaut-inhabited space station
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atomic power station
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attended station
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automatic unified orbital station
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automatic water-stage recording station
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automatic welding station
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auxiliary power station
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avalanche station
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backhaul station
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back-to-back high-voltage direct-current converter station
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bagging station
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base compressor station
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base pumping station
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base station
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baseline station
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base-load power station
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beacon station
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beet pulp drying station
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beet receiving station
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beet washing station
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benchmark station
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block-signal station
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boarding station
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boiling station
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booster station
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broadcasting station
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broadcast station
-
bulk flour station
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buoy-based station
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captain's station
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captain station
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car inspection station
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cathodic protection station
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central electric station
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central heat supply station
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charging station
-
check station
-
circle station
-
circulating pumping station
-
civilian-manned space station
-
clean work station
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climatological station
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coal-fired power station
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coast station
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coastal direction finding station
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coke-screening station
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communication relay station
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compressor station
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concrete coating station
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connecting station
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conning station
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conservated space station
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control radio station
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control station
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converter station
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co-orbiting space stations
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coordinate inspection station
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cream station
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crusher station
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cube station
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current-meter gaging station
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current-meter station
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customs station
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data return capsule-carried space station
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data station
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dead station
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deburring station
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deconservated space station
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dedicated milling station
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deorbited space station
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design station
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destination station
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diesel power station
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diffusion station
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direction and guidance radar station
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direction-finding station
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discharge station
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dispatch station
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dispatching control station
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display station
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distribution station
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diversion power station
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diversion station
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docking station
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drainage station
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drift station
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drive station
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dry station
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dual-keel space station
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dual-purpose station
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dumping station
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early-warning radar station
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earth station
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earthquake-detection station
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electric power station
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electric station
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electrode building station
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engine changing station
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engineered work station
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engineman's station
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enlarged space station
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entry station
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evaporation station
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exposure station
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extended duration space station
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feed station
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filling station
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film take-up station
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fish rearing station
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fixed ship station
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fixed station
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fixturing station
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flexible machining station
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flexible space station
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flight engineer station
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floating diesel station
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floating power station
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floating station
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floating weather station
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fossil-fueled power station
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free-standing pallet station
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frontier station
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fuel station
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gaging station
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gas engine compressor station
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gas gathering station
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gas station
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gas-compressor station
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gas-distributing station
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gas-lift compressor station
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gas-turbine power station
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generating station
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GEO space station
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geothermal power station
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grain-collecting station
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greasing station
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grid-connected photovoltaic station
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ground station
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group pumping station
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growth station
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guidance station
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half-open-air hydroelectric station
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hammer station
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head-end station
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heat-electric generating station
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high altitude space station
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high-latitude station
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high-level station
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high-lift pump station
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high-power station
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holding station
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home station
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homing station
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horizontal designed space station
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hot-metal station
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hydraulic experimental station
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hydroelectric power station
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hydroelectric pumped storage power station
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hydrological station
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hydrometric station
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ice lookout station
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ice pilot station
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ice-based station
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impact station
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inhabited space station
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inland station
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in-machine station
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inquiry station
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insertion station
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inspection station
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integrated sewing station
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interchange station
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interlocking station
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intermediate station
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international space station
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interplanetary station
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inverter station
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irrigation pumping station
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island station
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issuing station
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junction station
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knitting station
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knocking-out station
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ladle bricking station
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ladle preparation station
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land station
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landing direction-finding station
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large-size power station
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large power station
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LEO space station
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lightning direction-finding station
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lightship station
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line booster pump station
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liquefied natural gas station
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load station
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load/unload station
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loading station
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local station
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localizer station
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logic programming station
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long-functioning space station
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long-term space station
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long-term station
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loop station
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low-altitude space station
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low-latitude station
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low-lift pump station
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lubrication station
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machine tool station
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machining work station
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machining station
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magazine station
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magnetic station
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magnetotelluric station
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main pumping station
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manned station
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manual part control station
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man-visited space station
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master station
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material handling work station
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measuring station
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medium-size power station
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medium power station
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medium-head hydroelectric station
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melt station
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mesonet station
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microwave relay station
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milk collecting station
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mine-mouth power station
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mixed pumped-storage station
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mobile electric power station
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mobile power station
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mobile ship station
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mobile station
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mobile television station
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mold lubricating station
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monitoring station
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moonbounce station
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multiband station
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multimodule space station
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multiparameter station
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multiple docking ports-equipped space station
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multiple modules-docked space station
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multiple pressurized modules space station
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multipurpose space station
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multisolar-panels-consisted station
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NC control station
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newsroom station
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node station
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nuclear heat-only station
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nuclear power station
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nuclear steam station
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observational station
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observation station
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ocean weather station
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off-line station
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oil-burning power station
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oil-fired power station
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oil-gathering station
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oil-marketing station
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OMV-equipped space station
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on-orbit power generation station
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open-air hydroelectric station
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orbital laser power station
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orbital station
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origin station
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oxy-gas cutoff station
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ozonometry station
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package power station
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packing station
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pan station
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partial-record station
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passenger station
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passing station
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passive seismic station
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payoff station
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peak-load power station
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pendent control station
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periodically tended space station
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permanent seismograph station
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permanent space station
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photovoltaic pumping station
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pier-type hydroelectric station
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pilot solar power station
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pipe welding station
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pipeline-up station
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pluviometric station
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pole-mounted station
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postprocess gaging station
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power station
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precipitation station
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primary station
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principal station
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probe station
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public service power station
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public utility power station
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pumped-storage station
-
pumping station
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punch station
-
purely civilian-manned space station
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push-button pipeline pumping station
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rack-mounted station
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radar station
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radio station
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radio-beacon station
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radio-compass station
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radio-positioning station
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radio-range station
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radio-relay station
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radiosonde station
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rating station
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rawinsonde receiving station
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rawinsonde station
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read station
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receiving station
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reclamation station
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reconservated space station
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recording station
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rectifier station
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reference station
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reforwarding station
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refrigerating station
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refuge station
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relay pump station
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relay station
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relift station
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remote methane measurement station
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remote monitoring station
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remote station
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remote tool transfer station
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repeater station
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representative station
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repressuring station
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rescue station
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reservoired power station
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resupply space station
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river station
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robot station
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robot weather station
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roll-welding station
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run-of-river power station
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run-of-river station
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sample station
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satellite solar power station
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scrubbing station
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secondary station
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seismic station
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seismograph station
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seismological station
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self-service station
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sending station
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sewage pumping station
-
shaft station
-
ship station
-
shipboard power station
-
ship-handling station
-
shore collection station
-
shore station
-
short-lived station
-
short-term space station
-
short-term station
-
skimming station
-
slave station
-
small-size power station
-
small power station
-
solar power station
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solar radio station
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solar station
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solar-diesel hybrid power station
-
solar-powered service station
-
solid-fuel power station
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source pump station
-
space station
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space tug-equipped orbital station
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space-based laser station
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stage station
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stationary relay station
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steering station
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storage power station
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stream-gaging station
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stuffing station
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stunning station
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subscriber heat supply station
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subscriber station
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suburban station
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surface synoptic station
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surveillance radar station
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switching station
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synoptic station
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tank oil filling station
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tapping station
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telemetering station
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telemetry station
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television transmitting station
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temperature-regulating station
-
terminal pump station
-
terminal station
-
terrestrial station
-
test station
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tethered space station
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thermal power station
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thermal station
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tidal power station
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toll station
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tool adjustment station
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tool change station
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tool measuring-and-adjustment station
-
tool presetting station
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tool station
-
torch-cutting station
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total energy power station
-
totally autonomous manned space station
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tracker station
-
transfer pumping station
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transfer station
-
transforming station
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transit station
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transmitting station
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transport station
-
transportable earth station
-
transportable station
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trigeneration power station
-
trim station
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two docking ports-equipped space station
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underground power station
-
underground station
-
unload station
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unmanned pumping station
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unmanned station
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upper-air station
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user station
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vacuum-compressor station
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variable-head station
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versatile space station
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visited space station
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wall-mounted station
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washing station
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water injection pumping station
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water monitoring station
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water power station
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water rating station
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water station
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water treatment station
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water-balance station
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water-pumping station
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water-purification floating station
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wayside station
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weather station
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weighing station
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weir station
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well test station
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wind power station
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windup station
-
working station
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work station
-
workpiece preparatory station
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