A History of Technology: The industrial revolution, c. 1750 to c. 1850Clarendon Press, 1958 |
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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 458
... parallel segmental arch ribs , with a lattice - work , or grid , of bars above to sup- port the deck , cast either with the rib or separately , according to the size of the bridge . Cross - bracing be- tween the parallel systems ensured ...
... parallel segmental arch ribs , with a lattice - work , or grid , of bars above to sup- port the deck , cast either with the rib or separately , according to the size of the bridge . Cross - bracing be- tween the parallel systems ensured ...
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 |
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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 developed diameter driving E. J. HOLMYARD early eighteenth century engine England Europe farming figure fish France French furnace glass heat husbandry Ibid important improved inches increased industrial revolution 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 Photograph by courtesy pipe piston plate practice produced pump river road rollers rotation Rotherham plough salt Science Museum 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