The Mechanics' Magazine and Journal of Engineering, Agricultural Machinery, Manufactures and Shipbuilding, 91. köideRobertson, Brooman, & Company, 1869 |
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Page 158
... Coal Commission into the extent and management of the coal fields appear to be re - assuring as regards the danger of their becoming soon exhausted ; nevertheless , the importance of economising these precious deposits in the production ...
... Coal Commission into the extent and management of the coal fields appear to be re - assuring as regards the danger of their becoming soon exhausted ; nevertheless , the importance of economising these precious deposits in the production ...
Page 386
... coal - fields , adequate venti- lation is not inferior in importance to any of the problems which the mining engineer has to solve . The earliest records of mining make us acquainted with the readiest mode of ventilation , no provision ...
... coal - fields , adequate venti- lation is not inferior in importance to any of the problems which the mining engineer has to solve . The earliest records of mining make us acquainted with the readiest mode of ventilation , no provision ...
Page 404
... coal could be got without previously holing it ; these. - BY MR . J. GRAFTON JONES . SECTION OF HARD COAL STALL GEES SCUDS CLEARANCE TENSION BARS Box HARD COAL 2 ' 9 " 01- PRESS HYDRAULIC COAL - GETTING MACHINERY . HE feeling that ...
... coal could be got without previously holing it ; these. - BY MR . J. GRAFTON JONES . SECTION OF HARD COAL STALL GEES SCUDS CLEARANCE TENSION BARS Box HARD COAL 2 ' 9 " 01- PRESS HYDRAULIC COAL - GETTING MACHINERY . HE feeling that ...
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abandoned acid action amount apparatus applied arrangement attached axle Birmingham boiler bolts bottom cable carriage carried cartridge centre chamber Chancery-lane coal colour connected consists construction cylinder Dated December Dated February Dated January December 18 December 21 disc employed engine February 9 fitted fixed flange formed frame furnace gear groove heat hydrochloric acid Improvements invention inventor iron January 16 January 27 Lancashire lever London lower machine machinery manganese manufacture material means MECHANICS ments Messrs metal Middlesex miles motion mould nitro-glycerine obtained operation ordinary paper passing Patent completed piece pipe piston placed plate present pressure produced puddling furnaces pulley pump purpose railway ratus revolving rollers screw screw thread shaft ship side slide solution spindle spring steam steam engine steel suitable sulphuric acid surface temperature tion tons tube upper valve velocipedes vertical vessel W. R. Lake weight wheel