Journal of the Franklin InstituteFranklin Institute, 1851 Vols. 1-69 include more or less complete patent reports of the U. S. Patent Office for years 1825-1859. cf. Index to v. 1-120 of the Journal, p. [415] |
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Results 6-10 of 100
Page 71
... the dwellings of workmen near large cities , are excluded , because , though belonging to the works , they have an independent value , The value of all coal land has been also excluded Manufacture of Iron in Pennsylvania . 71.
... the dwellings of workmen near large cities , are excluded , because , though belonging to the works , they have an independent value , The value of all coal land has been also excluded Manufacture of Iron in Pennsylvania . 71.
Page 72
... coal to the works , and in transporting the finished iron to market , have also been excluded from the above account ... coal , 483,000 tons , at an average value of $ 3 per ton , Bituminous coal , 9,007,600 bushels , at 5c . , Wood ...
... coal to the works , and in transporting the finished iron to market , have also been excluded from the above account ... coal , 483,000 tons , at an average value of $ 3 per ton , Bituminous coal , 9,007,600 bushels , at 5c . , Wood ...
Page 72
... Coal . Fur . Fur . Tons . CONSUMED . No Furnaces Coal . Wood . Pig . Bloom . Scrap . Tons . Cords . Tons . Tons . Tons . Largest Men and Horses , Product running , 1850. boys em- mules and Description of Pud- Heat- ployed . oxen em ...
... Coal . Fur . Fur . Tons . CONSUMED . No Furnaces Coal . Wood . Pig . Bloom . Scrap . Tons . Cords . Tons . Tons . Tons . Largest Men and Horses , Product running , 1850. boys em- mules and Description of Pud- Heat- ployed . oxen em ...
Page 72
... Coal . Fur . Fur . Bush . Coal . Tons . Pig . Bloom . Scrap Tons . Tons . Tons . Largest Product . Tons . No Furnaces No. of No.oxen , running , 1850. men and horses and Pud- Heat- boys em- mules em dling ing . ployed ployed ...
... Coal . Fur . Fur . Bush . Coal . Tons . Pig . Bloom . Scrap Tons . Tons . Tons . Largest Product . Tons . No Furnaces No. of No.oxen , running , 1850. men and horses and Pud- Heat- boys em- mules em dling ing . ployed ployed ...
Page 72
... COAL AND HOT BLAST COKE AND HOT BLAST . CHARCOAL AND HOT BLAST . CHARCOAL AND COLD BLAST . FORGES . ROLLING MILLS . COUNTY . S. * F. S * In . Out . Total . Investment . In . Out . Total . Investment . F. 1 S. * F. In . Out . Total ...
... COAL AND HOT BLAST COKE AND HOT BLAST . CHARCOAL AND HOT BLAST . CHARCOAL AND COLD BLAST . FORGES . ROLLING MILLS . COUNTY . S. * F. S * In . Out . Total . Investment . In . Out . Total . Investment . F. 1 S. * F. In . Out . Total ...
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action angle apparatus applied arrangement attached axis bituminous blades blast blast furnace boiler carriage cast iron cent centre centrifugal force chord circuit claim therein coal combination condenser connected connexion construction Coulaine cubic curved cutters cylinder deflexion diameter distance effect electric telegraph electricity engine equal experiments feet flues force frame Franklin Institute furnace generatrix gutta percha heat Improvement increased indicator diagrams invention consists Journal length lever machine magnet manner mastic material means metal miles motion operation paddle passing patent pipe piston placed plane plate present pressure produced propeller proportion pump purpose rails railway revolutions per minute roadway rollers screw shaft side slide spring square inch steam steam engine steamers Stoves stroke substantially as described surface tangential angle telegraph temperature thickness tion tons tube valve velocity vertical vessel weight wheel wire wrought iron York