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 1-5 of 100
Page 14
... double effect of heating the front end of an extended oven , and at the same time to keep up a circulation of heated air in and through the oven . " Claim .— “ What I claim as my invention , is the method of heating the front end of the ...
... double effect of heating the front end of an extended oven , and at the same time to keep up a circulation of heated air in and through the oven . " Claim .— “ What I claim as my invention , is the method of heating the front end of the ...
Page 15
... double - walled chamber , the inner wall of which encloses a cold air trench , supplied from without , that surrounds the ash - pit , with openings at its top for the proper admission of air into the air chamber around the furnace , and ...
... double - walled chamber , the inner wall of which encloses a cold air trench , supplied from without , that surrounds the ash - pit , with openings at its top for the proper admission of air into the air chamber around the furnace , and ...
Page 25
... double purpose of lowering the bar and disengaging the click . " Claim . “ I claim the hanging of the lever by links , which permit the lever teeth to disengage themselves from those of the rack bar , with which they are engaged by ...
... double purpose of lowering the bar and disengaging the click . " Claim . “ I claim the hanging of the lever by links , which permit the lever teeth to disengage themselves from those of the rack bar , with which they are engaged by ...
Page 26
... double the width of the stitch , or some other suitable distance greater than the width of the stitch , and is next passed through the cloth from its front side to its rear side ; such opera- tion being successively repeated in the ...
... double the width of the stitch , or some other suitable distance greater than the width of the stitch , and is next passed through the cloth from its front side to its rear side ; such opera- tion being successively repeated in the ...
Page 45
... double tier flue boilers , which may be made with very slightly - increased weight and dimensions . The follow- ing Table will show the great improvements of late years in this branch of marine engineering : — Years made in . Per ...
... double tier flue boilers , which may be made with very slightly - increased weight and dimensions . The follow- ing Table will show the great improvements of late years in this branch of marine engineering : — Years made in . Per ...
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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