A History of Technology: The industrial revolution, c. 1750 to c. 1850Clarendon Press, 1954 |
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Page 87
... parallel lines at right - angles to the advancing wall or face . The pur- pose of these walls is to cushion the lowering of the roof after its supporting coal is removed and thus preserve as far as possible its unbroken state ...
... parallel lines at right - angles to the advancing wall or face . The pur- pose of these walls is to cushion the lowering of the roof after its supporting coal is removed and thus preserve as far as possible its unbroken state ...
Page 387
... parallel to each other ( figure 215 ) . The latter is set in motion by a crank ; its motion is transmitted to the lead - screw through toothed gearing - wheels , the number of teeth being a function of the ratio between the pitch of the ...
... parallel to each other ( figure 215 ) . The latter is set in motion by a crank ; its motion is transmitted to the lead - screw through toothed gearing - wheels , the number of teeth being a function of the ratio between the pitch of the ...
Page 528
... parallel to the road surface , be- came unnecessarily and wastefully deep in the middle of the road . He believed that he could reduce the depth of the road - bed to 9-10 in from side to side , which would lower the cost to less than ...
... parallel to the road surface , be- came unnecessarily and wastefully deep in the middle of the road . He believed that he could reduce the depth of the road - bed to 9-10 in from side to side , which would lower the cost to less than ...
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 blast-furnace 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 developed diameter driving E. J. HOLMYARD early eighteenth century engine England Europe fallow farming figure fish France French furnace Germany glass heat husbandry Ibid important improved inches increased industrial revolution industry introduced invention J. F. Horrabin John Smeaton later lathe London machine machinery manufacture mechanical metal method mill mineral mines Newcomen Newcomen engine nineteenth century obtained operation oxide Paris patent pipe piston plate practice produced pump river road rollers rotation Rotherham plough salt screw sewers shaft ships silk Smeaton smelting Staffordshire steam steam-engine steel stone sulphuric acid surface tion tuyère vertical ware water-wheels watermills Watt whales wheel wooden wrought iron