Journal of the Franklin InstituteFranklin Institute, 1853 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] |
From inside the book
Արդյունքներ 100–ի 1-ից 5-ը:
Էջ 47
... metal acquires a long and very tenacious fibre . I have not been able to ascertain the exact ratio of the tenacities of the purified and unpurified iron , but I have de- termined the comparative resistance of the two cast irons . I took ...
... metal acquires a long and very tenacious fibre . I have not been able to ascertain the exact ratio of the tenacities of the purified and unpurified iron , but I have de- termined the comparative resistance of the two cast irons . I took ...
Էջ 65
... metal - a process which has been of such service to lead - mining generally , rendering many lead - mines workable with profit which must otherwise have been abandoned . The chief ore whence lead is extracted is that known as galena ...
... metal - a process which has been of such service to lead - mining generally , rendering many lead - mines workable with profit which must otherwise have been abandoned . The chief ore whence lead is extracted is that known as galena ...
Էջ 92
... metal for obtaining fire surface in the fire box , or any other part of a steam boiler , and at the same time making a secure connexion ( easily removed ) between the inner and outer plates of boiler , as sub- stantially herein before ...
... metal for obtaining fire surface in the fire box , or any other part of a steam boiler , and at the same time making a secure connexion ( easily removed ) between the inner and outer plates of boiler , as sub- stantially herein before ...
Էջ 105
... metal in the tubular form , for the purpose of securing great durability , and facility of shaping it as desired , while it retains the required lightness and strength ; and secondly , in the manner of adjusting the nebs on the snath ...
... metal in the tubular form , for the purpose of securing great durability , and facility of shaping it as desired , while it retains the required lightness and strength ; and secondly , in the manner of adjusting the nebs on the snath ...
Էջ 106
... metal to be forged , and holding the same in the proper position , and , from time to time , changing its position between the reciprocating rollers , in combination with reciprocating rollers for shaping the metal so held , whose ...
... metal to be forged , and holding the same in the proper position , and , from time to time , changing its position between the reciprocating rollers , in combination with reciprocating rollers for shaping the metal so held , whose ...
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acid alumina apparatus applied arrangement Assignor axle beam blast boiler carbon carbonic acid cast iron cause cent centre centum chamber claim coal colors combination condensation connexion construction cutter cylinder diameter effect engine equivalent evaporated experiments feet fire box flues frame Franklin Institute furnace fusel oil gases heating surface hour hydrochloric acid Improvement increase india rubber indicator diagrams invention consists Journal length letters patent lever locomotive machine machinery magnesia manner manufacture Mean effective pressure means mechanical metal miles minute mode motion mould nitric acid obtained operation oxide pass patent Pennsylvania Philadelphia pipe piston pitch placed plate portion pounds present pressure produced proportion purpose quantity railway rollers screw shaft side silica slide speed spring square inch steam Stove stroke substantially as described temperature tion train tubes valve vertical vessel weight wheel wrought iron York