Journal of the Franklin Institute, Volume 80; Volume 110Franklin Institute, 1880 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 33
Page 31
... foot of heating surface being about the same . Here is a loss of economic effect of not less than 11 per centum , and to what is it to be attributed ? Probably to the infiltration of air through the masonry enclosing the boiler shells ...
... foot of heating surface being about the same . Here is a loss of economic effect of not less than 11 per centum , and to what is it to be attributed ? Probably to the infiltration of air through the masonry enclosing the boiler shells ...
Page 32
... foot of grate surface ; but having their furnaces and flues in brick masonry instead of in iron shells ; and just in proportion to the extent of the brick surface with which the gases . of combustion were in contact . Whenever the ...
... foot of grate surface ; but having their furnaces and flues in brick masonry instead of in iron shells ; and just in proportion to the extent of the brick surface with which the gases . of combustion were in contact . Whenever the ...
Page 79
... foot of water . Therefore , the weight of water used per horse - power is e VN 621 / S W = 144 33000 e Pp [ 1+ nat . log . 1 ] 14323 e [ 1+ nat . log . 1 ] - S b { e P , [ 1 + na B Po If in this last formula we substitute B } VN = B for ...
... foot of water . Therefore , the weight of water used per horse - power is e VN 621 / S W = 144 33000 e Pp [ 1+ nat . log . 1 ] 14323 e [ 1+ nat . log . 1 ] - S b { e P , [ 1 + na B Po If in this last formula we substitute B } VN = B for ...
Page 105
... foot in diam- eter ; if a man takes hold of one end of the string and unwinds it all , by walking around the cylinder , keeping the string stretched , how far will he travel ? I solved the general problem as follows : B 0 R In the ...
... foot in diam- eter ; if a man takes hold of one end of the string and unwinds it all , by walking around the cylinder , keeping the string stretched , how far will he travel ? I solved the general problem as follows : B 0 R In the ...
Page 111
... foot of compressed air . There can be no doubt that the engine so far has worked most satisfactorily , and there can be as little doubt that the new pattern engine , which we under- stand will soon be running on the Edinburgh and ...
... foot of compressed air . There can be no doubt that the engine so far has worked most satisfactorily , and there can be as little doubt that the new pattern engine , which we under- stand will soon be running on the Edinburgh and ...
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acid Anthracite apparatus battery bobbin boiler bone oil carbon carbonic acid cent chamber coal gas combustion compression constructed containing cubic cylinder diameter dimensions drawing-roller dy dz dynamo-electric effect elastic elastic limit electric light employed experiments feet fibres Franklin Institute furnace gases gills give heating surface horizontal horse-power hour increase ingot iron jute length locomotive machine magnet manganese matter means mechanical ment metal metric metric system miles miles per hour millimetre minute motion nuts obtained ordinary oxide oxygen paraffine Patents Perkins Engine phosphorus pins piston placed plate pound of coal pounds per square practical pressure produced proportion quantity Rendus resistance revolutions per minute rollers screws selenium shaft shell side silica slag sliver speed square inch steam dome steam engine steel strain Sulphur temperature tion tons tubes valve vaporized velocity vertical vessel weight wheels wire