Journal of the Franklin InstituteVols. 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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Page 19
For an Improvement in Seed Planters ; Levis H. Davis , Samuel and Morton Pen . nock , Kennett Square , Pennsylvania . Claim .-- " Having described our improvements in seeding machines , what we claim as our invention is , 1st , The ...
For an Improvement in Seed Planters ; Levis H. Davis , Samuel and Morton Pen . nock , Kennett Square , Pennsylvania . Claim .-- " Having described our improvements in seeding machines , what we claim as our invention is , 1st , The ...
Page 38
Average steam pressure in boiler per square inch above atmos . in pounds . Average number of double strokes of piston made per minute . Total number of double strokes of piston made ( by counter . ) Time - Hours and minutes .
Average steam pressure in boiler per square inch above atmos . in pounds . Average number of double strokes of piston made per minute . Total number of double strokes of piston made ( by counter . ) Time - Hours and minutes .
Page 41
From the data given in Regnault's experiments , this loss would be as follows the temperature of the feed water being maintained at 110 ° Fah . , and the average steam pressure in the boilers being 15.6 pounds per square inch above ...
From the data given in Regnault's experiments , this loss would be as follows the temperature of the feed water being maintained at 110 ° Fah . , and the average steam pressure in the boilers being 15.6 pounds per square inch above ...
Page 42
Oblique action of the paddles , 21.50 Steam pressure in boilers per square inch above atmosphere , 15.85 pounds . Initial steam pressure in cylinders per sq . in . 13.85 Point of cutting off from commencement of stroke , 4 feet 4 inches ...
Oblique action of the paddles , 21.50 Steam pressure in boilers per square inch above atmosphere , 15.85 pounds . Initial steam pressure in cylinders per sq . in . 13.85 Point of cutting off from commencement of stroke , 4 feet 4 inches ...
Page 47
... to ascertain the exact ratio of the tenacities of the purified and unpurified iron , but I have determined the comparative resistance of the two cast irons . I took bars of the irons carefully shaped , having one square inch cross ...
... to ascertain the exact ratio of the tenacities of the purified and unpurified iron , but I have determined the comparative resistance of the two cast irons . I took bars of the irons carefully shaped , having one square inch cross ...
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acid action amount apparatus appears applied arrangement attached boiler carbon carried cast cause cent centre chamber claim closed coal colors combination connected consists construction containing cylinder described diameter direction distance effect employed engine equal experiments feet fire flues force frame furnace give given greater heat hour Improvement inches increase Institute invention iron Journal latter lead length less light lower machine manner manufacture material means mechanical metal method miles minute motion moved nature object observed obtained operation oxide pass patent pipe piston placed plate portion position pounds practical present pressure produced proportion quantity railway screw separate shown side slide space specified speed spring square steam stroke substantially surface taken tion train tubes turning valve vessel weight wheel whole York