A History of Technology: The industrial revolution, c. 1750 to c. 1850Clarendon Press, 1958 |
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Page 86
... angles ( the ' whole ' workings ) , and subsequently to ' follow up ' by extracting the pillars or ' broken ' workings . At ... angle of about 45 ° with the main natural ' slips ' or breaks in the roof . By this means the danger of an ...
... angles ( the ' whole ' workings ) , and subsequently to ' follow up ' by extracting the pillars or ' broken ' workings . At ... angle of about 45 ° with the main natural ' slips ' or breaks in the roof . By this means the danger of an ...
Page 476
... angle - section were available about 1820 , and small I - section beams , useful for light work , were produced in ... angles . Heavy rolled I - section beams had to await the invention of mild steel , cast in massive ingots , in the ...
... angle - section were available about 1820 , and small I - section beams , useful for light work , were produced in ... angles . Heavy rolled I - section beams had to await the invention of mild steel , cast in massive ingots , in the ...
Page 603
... angle between two lines of sight : such were the cercle hollandais ( perhaps de- veloped from the nautical astrolabe ) and the so - called ' common theodolite ' , a modification of the circumferentor ( figure 328 ) . The surveying ...
... angle between two lines of sight : such were the cercle hollandais ( perhaps de- veloped from the nautical astrolabe ) and the so - called ' common theodolite ' , a modification of the circumferentor ( figure 328 ) . The surveying ...
Contents
GLASS by L M ANGUSBUTTERWORTH Director The Newton Heath Glass | 12 |
TELEGRAPHY by G R M GARRATT Deputy Keeper Department of Electrical | 22 |
FISH PRESERVATION by C L CUTTING Officer in Charge Humber | 44 |
Copyright | |
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agricultural beam became Boulton Boulton and Watt bridge Britain British built canal carbon carried cast iron chemical clay coal Coalbrookdale coke construction copper crops cylinder D. E. Woodall diameter E. J. HOLMYARD early eighteenth century engine England English Europe fallow farming figure fish France French furnace glass heat horizontal husbandry Ibid important improved inches industrial revolution introduced invention inventor J. F. Horrabin John John Smeaton later lathe London machine machinery manufacture mechanical metal method mill mineral mines Newcomen Newcomen engine nineteenth century obtained operation oxide Paris patent Photograph by courtesy pipe piston plate porcelain practical produced pump river road rollers rotation Rotherham plough salt screw sewers shaft ships silk Smeaton Staffordshire steam steam-engine steel stones sulphuric acid surface telegraph tion vertical ware water-wheels watermills Watt whales wheel wooden wrought iron