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 1-5 of 53
Page 5
... tion that 6 - inch belts be used , will transfer , where the belt is strained normally upon both sides to 404 pounds per inch of width , 72 horse- power . As , however , the contact with the driving or driven pulleys can scarcely be so ...
... tion that 6 - inch belts be used , will transfer , where the belt is strained normally upon both sides to 404 pounds per inch of width , 72 horse- power . As , however , the contact with the driving or driven pulleys can scarcely be so ...
Page 13
... tion of the number of revolutions per mile . In the Baldwin engine the revolutions per mile are 1680 6.5 = 258 , and those of the Pennsylva-- nia Railroad , with a 5 foot wheel , 1680 5.5 = 305 , an increase of 305-258 × 100 305 = 154 ...
... tion of the number of revolutions per mile . In the Baldwin engine the revolutions per mile are 1680 6.5 = 258 , and those of the Pennsylva-- nia Railroad , with a 5 foot wheel , 1680 5.5 = 305 , an increase of 305-258 × 100 305 = 154 ...
Page 32
... tion , within the limits of ordinary practice . During the many experiments on boiler vaporization made or inves- tigated by the writer an inferior result was always found with boilers of the same type , having the same proportions of ...
... tion , within the limits of ordinary practice . During the many experiments on boiler vaporization made or inves- tigated by the writer an inferior result was always found with boilers of the same type , having the same proportions of ...
Page 33
... tion given in the preceding table , because it was desired to have that vaporization comparable with the results of other similar experiments , and because there is great doubt of the accuracy of such determina- tions , which are really ...
... tion given in the preceding table , because it was desired to have that vaporization comparable with the results of other similar experiments , and because there is great doubt of the accuracy of such determina- tions , which are really ...
Page 35
... tion of the carbon of the spiegel on the oxide of iron of the bath . There is then produced a partial rephosphorization of the purified metal ; about a thousandth of phosphorus is added to that which had been left in the steel , and ...
... tion of the carbon of the spiegel on the oxide of iron of the bath . There is then produced a partial rephosphorization of the purified metal ; about a thousandth of phosphorus is added to that which had been left in the steel , 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