The New Encyclopędia BritannicaEncyclopędia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 237
... speed of the gear . If the shafts are parallel , the gear and pinion could be replaced by a pair of cylinders that would transmit the motion by pure rolling contact at the same speed ratio as the gears . On the gears , the circles that ...
... speed of the gear . If the shafts are parallel , the gear and pinion could be replaced by a pair of cylinders that would transmit the motion by pure rolling contact at the same speed ratio as the gears . On the gears , the circles that ...
Page 245
... speeds . As with flat belts , the speed - limiting factor is centrifugal action . Though maxi- mum speed ratio for satisfactory performance is approxi- mately 7 : 1 , higher ratios can be used . V belts may be used singly or in ...
... speeds . As with flat belts , the speed - limiting factor is centrifugal action . Though maxi- mum speed ratio for satisfactory performance is approxi- mately 7 : 1 , higher ratios can be used . V belts may be used singly or in ...
Page 261
... speed steel . The introduction of high - speed steel about 1900 permitted operation of tools at twice or three times the speeds allowable with carbon steel , thus dou- bling or trebling the capacities of the world's machine shops . One ...
... speed steel . The introduction of high - speed steel about 1900 permitted operation of tools at twice or three times the speeds allowable with carbon steel , thus dou- bling or trebling the capacities of the world's machine shops . One ...
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applied army atoms bearings became become body called cause central centre century church complete connected continued cutting direction Dutch early effect electric electrons energy equal example expressions fact field Figure force France French function gears German give given House important increased industry Italy King known land later load logic London Louis lubricant machines magnetic major material means mechanical ment miles motion move movement natural obtained operations original period political population position possible principles problem produced properties propositions region relations remained result River rotation rule shaft speed square surface temperature theory tion tool towns true turn types United universal usually valid