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1 Stumpf, Johann
SUBJECT AREA: Steam and internal combustion engines[br]fl. c. 1900 Germany[br]German inventor of a successful design of uniflow steam engine.[br]In 1869 Stumpf was commissioned by the Pope Manufacturing Company of Hertford, Connecticut, to set up two triple-expansion, vertical, Corliss pumping engines. He tried to simplify this complicated system and started research with the internal combustion engine and the steam turbine particularly as his models. The construction of steam turbines in several stages where the steam passed through in a unidirectional flow was being pursued at that time, and Stumpf wondered whether it would be possible to raise the efficiency of a reciprocating steam engine to the same thermal level as the turbine by the use of the uniflow principle.Stumpf began to investigate these principles without studying the work of earlier pioneers like L.J. Todd, which he later thought would have led him astray. It was not until 1908, when he was Professor at the Institute of Technology in Berlin- Charlottenburg, that he patented his successful "una-flow" steam engine. In that year he took out six British patents for improvements in details on his original one Stumpf fully realized the thermal advantages of compressing the residual steam and was able to evolve systems of coping with excessive compression when starting. He also placed steam-jackets around the ends of the cylinder. Stumpf's first engine was built in 1908 by the Erste B runner Maschinenfabrik-Gesellschaft, and licences were taken out by many other manufacturers, including those in Britain and the USA. His engine was developed into the most economical type of reciprocating steam engine.[br]Bibliography1912, The Una-Flow Steam Engine, Munich: R. Oldenbourg (his own account of the una-flow engine).Further ReadingH.W.Dickinson, 1938, A Short History of the Steam Engine, Cambridge University Press; R.L.Hills, 1989, Power from Steam. A History of the Stationary Steam Engine, Cambridge University Press (both discuss Stumpf's engine).H.J.Braun, "The National Association of German-American Technologists and technology transfer between Germany and the United States, 1844–1930", History of Technology 8 (provides details of Stumpf's earlier work).RLH -
2 Todd, Leonard Jennett
SUBJECT AREA: Steam and internal combustion engines[br]fl. 1885 London, England[br]English (?) patentee of steam engines incorporating the uniflow principle.[br]In a uniflow system, the steam enters a steam engine cylinder at one end, pushes the pistons along, and exhausts through a ring of ports at the centre of the cylinder that are uncovered by movement of the piston. The piston is returned by steam then entering the other end of the cylinder, moving the piston arrangement back, and again making its exit through the central ports. This gave the thermodynamic advantage of the cylinder ends remaining hot and the centre colder with reheating the ends of the cylinder through compression of the residual steam. The principle was first patented by Jacob Perkins in England in 1827 and was tried in America in 1856.Little is known about Todd. The addresses given in his patent specifications show that he was living first at South Hornsey and then Stoke Newington, both in Middlesex (now in London). No obituary notices have been traced. He took out a patent in 1885 for a "terminal exhaust engine" and followed this with two more in 1886 and 1887. His aim was to "produce a double acting steam engine which shall work more efficiently, which shall produce and maintain within itself an improved gradation of temperature extending from each of its two Hot Inlets to its common central Cold Outlet". His later patents show the problems he faced with finding suitable valve gears and the compression developing during the return stroke of the piston. It was this last problem, particularly when starting a condensing engine, that probably defeated him through excessive compression pressures. There is some evidence that he hoped to apply his engines to railway locomotives.[br]Bibliography1885, British patent no. 7,301 (terminal exhaust engine). 1886, British patent no. 2,132.1887, British patent no. 6,666.Further ReadingR.L.Hills, 1989, Power from Steam. A History of the Stationary Steam Engine, Cambridge University Press (provides the fullest discussion of his patents). H.W.Dickinson, 1938, A Short History of the Steam Engine, Cambridge University Press.J.Stumpf, 1912, The Una-Flow Steam Engine, Munich: R.Oldenbourg.RLH -
3 chorro
m.1 jet, spurt (de líquido) (borbotón).salir a chorros to spurt o gush out2 stream.3 the runs, diarrhea.* * *1 (de líquido) jet, spout, spurt, gush2 (de gas) jet, blast3 (de poca cantidad) trickle4 (de luz) flood5 figurado (de cosas) stream, flood, torrent\a chorros in abundance■ tiene dinero a chorros he's got plenty of money, he's loaded (with money)estar como los chorros del oro familiar to be as clean as a whistlede propulsión a chorro jet-propelledhablar a chorros to gabble, jabberllover a chorros to pour downsalir a chorros to gush forth, gush outavión a chorro jet planechorro de vapor steam jetchorro de voz loud voice* * *noun m.jet, stream* * *SM1) [de líquido] jet, stream2) (Téc) jet, blast3) (=montón) stream, stringun chorro de insultos — a stream o string of insults
un chorro de voz — a verbal blast, a really loud voice
salir a chorros — to gush forth, come spurting out
4) ** (=suerte) jam **, luck¡qué chorro tiene! — he's so jammy! **
5) Cono Sur * (=ladrón) thief, pickpocket6) And [de látigo] lash7) CAm (=grifo) tap, faucet (EEUU)8) Caribe * (=reprimenda) ticking-off *, dressing-down ** * *I1) ( de agua) stream, jet; (de vapor, gas) jeta chorro — <motor/avión> jet (before n)
a chorros: la sangre salía a chorros blood poured o gushed out; sudaba a chorros he was sweating buckets (colloq); como los chorros del oro — (Esp fam) as clean o bright as a new pin
2) (AmC, Ven) ( del agua) faucet (AmE), tap (BrE)3) (Méx fam) ( cantidad)II- rra masculino, femenino (CS arg) thief* * *= jet, gush.Ex. This article describes in detail the various methods of ink-jet printing employing electrostatic steering, electromagnetic steering, and multiple ink jets.Ex. The gush of water could serve many purposes and was prescribed to soothe, to refrigerate, to stop a swelling, to widen pores, to shock the patient.----* a chorros = profusely.* avión a chorro = jet.* avión de propulsión a chorro = prop jet.* corriente de chorro, la = jet stream, the.* corriente en chorro, la = jet stream, the.* echar un chorro de = squirt.* flor que echa un chorro de agua = squirting flower.* impresión a chorros de tinta = ink-jet printing.* impresora de chorro de tinta = ink-jet printer.* motor a chorro = jet engine.* motor de propulsión a chorro = jet engine.* quitar pintura mediante chorro de arena a presión = sandblast.* salir a chorros = gush out, spurt.* sudar a chorros = sweat + buckets, sweat + profusely, sweat + bullets.* * *I1) ( de agua) stream, jet; (de vapor, gas) jeta chorro — <motor/avión> jet (before n)
a chorros: la sangre salía a chorros blood poured o gushed out; sudaba a chorros he was sweating buckets (colloq); como los chorros del oro — (Esp fam) as clean o bright as a new pin
2) (AmC, Ven) ( del agua) faucet (AmE), tap (BrE)3) (Méx fam) ( cantidad)II- rra masculino, femenino (CS arg) thief* * *= jet, gush.Ex: This article describes in detail the various methods of ink-jet printing employing electrostatic steering, electromagnetic steering, and multiple ink jets.
Ex: The gush of water could serve many purposes and was prescribed to soothe, to refrigerate, to stop a swelling, to widen pores, to shock the patient.* a chorros = profusely.* avión a chorro = jet.* avión de propulsión a chorro = prop jet.* corriente de chorro, la = jet stream, the.* corriente en chorro, la = jet stream, the.* echar un chorro de = squirt.* flor que echa un chorro de agua = squirting flower.* impresión a chorros de tinta = ink-jet printing.* impresora de chorro de tinta = ink-jet printer.* motor a chorro = jet engine.* motor de propulsión a chorro = jet engine.* quitar pintura mediante chorro de arena a presión = sandblast.* salir a chorros = gush out, spurt.* sudar a chorros = sweat + buckets, sweat + profusely, sweat + bullets.* * *A (de agua) stream, jet; (de vapor, gas) jetsólo sale un chorrito de agua del grifo there's only a trickle of water coming from the faucetagregar un chorrito de vino add a splash of wineuna ducha con un chorro muy potente a shower with a very strong spray, a high-pressure showerun chorro de luz entraba por la ventana a shaft of light came in through the windowse abrió y cayó un chorro de monedas it came open and coins poured outcon propulsión a chorro jet-propelleda chorros: la sangre salía a chorros blood poured o gushed outsudaba a chorros he was sweating buckets ( colloq)Compuestos:sandblastingstrength of voiceDtiene chorros de dinero he's got loads o stacks o pots of money ( colloq)me gusta un chorro salir I really love going outmasculine, feminine(CS arg) thiefcuidado, que aquí abundan los chorros watch it, there are lots of thieves o pickpockets around here ( colloq)la echaron por chorra she was fired for stealing* * *
chorro sustantivo masculino
1 ( de agua) stream, jet;
(de vapor, gas) jet;
a chorro ‹motor/avión› jet ( before n);
el agua salía a chorros water gushed out
2 (AmC, Ven) ( llave) faucet (AmE), tap (BrE)
3 (Méx fam) ( cantidad):◊ ¡qué chorro de gente! what a lot of people!;
chorros de dinero loads of money (colloq);
me gusta un chorro salir I really love going out
chorro sustantivo masculino
1 (de líquido abundante) spurt
(pequeño) trickle: el agua salía a chorros por la grieta, water was pouring out of the crack
2 (de gas, de vapor) jet
propulsión a chorro, jet propulsion
3 figurado stream, flood
' chorro' also found in these entries:
Spanish:
cohete
- enchufar
- proyectar
- surtidor
- avión
- propulsión
English:
gush
- jet
- jet-stream
- printer
- sandblast
- spirt
- spout
- spurt
- squirt
- stream
- blast
- faucet
- lace
- tap
* * *♦ nm1. [de líquido] [borbotón] jet, spurt;[hilo] trickle;sale un chorro muy fino de agua a thin trickle of water is coming out;añade un chorro de aceite a la ensalada drizzle some oil over the salad;salir a chorros to spurt o gush out;está sangrando a chorros he's bleeding heavily;la sangre se escapaba a chorros de la herida blood was gushing from the wound;Famcomo los chorros del oro as clean as a new pin2. [de luz, gente, preguntas] stream;cayó un chorro de monedas de la máquina tragaperras coins poured out of the slot machinechorro de voz:tener un chorro de voz to have a powerful voicenos queda un chorro de tiempo we've got loads of time;me provoca un chorro ir al concierto I really want to go to the concert♦ advMéx Fam loads;me gusta chorro I love it;me duele chorro it hurts like hellchorro2, -a nm,fRP Fam [ladrón] thief* * *m1 líquido jet, stream; figstream;sangraba/sudaba a chorros he was bleeding/sweating heavily;como los chorros del oro fam clean as a new pin;un chorro de Méx fam loads of fam2 C.Am.faucet, Brtap* * *chorro nm1) : flow, stream, jet* * *chorro n1. (de líquido) stream2. (de vapor, gas) jet
См. также в других словарях:
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