Twentieth century inventions, a forecastLongmans, Green, and Company, 1901 - 286 páginas |
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Página 27
... cheap windmills " . This , however , leads to another part of the problem . The costliness of the best modern patterns of windmill as now so extensively used , particularly in America , is mainly due to the elaborate , and , on the ...
... cheap windmills " . This , however , leads to another part of the problem . The costliness of the best modern patterns of windmill as now so extensively used , particularly in America , is mainly due to the elaborate , and , on the ...
Página 28
... cheapest and may be made the most substantial of all the forms of wind - motor . In its rudimentary shape this very elementary windmill resembles a four - bladed screw steam- ship propeller . The wheel may be constructed by simply ...
... cheapest and may be made the most substantial of all the forms of wind - motor . In its rudimentary shape this very elementary windmill resembles a four - bladed screw steam- ship propeller . The wheel may be constructed by simply ...
Página 31
... cheaper than to go to the expense of constructing the mill on a swivel so that it may follow the direction of the wind . At the same time it should be noticed that the adoption of the high speed wind - wheel , consisting of some kind of ...
... cheaper than to go to the expense of constructing the mill on a swivel so that it may follow the direction of the wind . At the same time it should be noticed that the adoption of the high speed wind - wheel , consisting of some kind of ...
Página 33
... cheaper wind - motors will have been entered upon , -in fact , the " little want " of which Lord Kelvin spoke in 1881 will have been supplied . The high speed which the dynamo requires , and the more rapid rate at which windmills ...
... cheaper wind - motors will have been entered upon , -in fact , the " little want " of which Lord Kelvin spoke in 1881 will have been supplied . The high speed which the dynamo requires , and the more rapid rate at which windmills ...
Página 35
... cheap and efficient wind - motor then becomes a square or hexagonal upright axis of fairly large section , to each side of which is secured a board or a rigid sheet - metal sail projecting beyond the corners . The side of the axis and ...
... cheap and efficient wind - motor then becomes a square or hexagonal upright axis of fairly large section , to each side of which is secured a board or a rigid sheet - metal sail projecting beyond the corners . The side of the axis and ...
Otras ediciones - Ver todas
Términos y frases comunes
adopted already alternate current apparatus appliances application B.Sc BOTANY buoy cable calcium carbide carrying cheap CHEMISTRY collectivism College Coloured compressed air constructed convenient course Crown 8vo D.Sc Diagrams direction driving dynamo economical effect electric current electric lighting ELEMENTARY energy engine fact force future heat Hospital Illustrations improvement industrial INORGANIC CHEMISTRY invention inventor JOHN TYNDALL kind latter Lecturer LL.D lodes Lond machine machinery MAGNETISM Manual means mechanical ment metal methods miner mining motion motor natural naval nineteenth century numerous operation PHYSIOLOGY piano pipe Plates practically principle Professor progress pumping purposes R. A. PROCTOR rail railway render road Royal 8vo running sail Science screw shaft ship side speed station steam steam-engine steel storage battery STRENGTH OF MATERIALS suitable tank telegraphy TEXT-BOOK tion traction traction engines truck turbine twentieth century utilised ventilation vessel wave-power waves wheel wind windmill wire Woodcuts
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