Journal of the Franklin InstituteFranklin Institute, 1843 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] |
Im Buch
Ergebnisse 1-5 von 100
Seite 2
... present themselves in practice , and many of which require special researches upon the physical constitution of earths considered as serni - fluids . Heretofore , the single question of the pressure of earths against indefinite masses ...
... present themselves in practice , and many of which require special researches upon the physical constitution of earths considered as serni - fluids . Heretofore , the single question of the pressure of earths against indefinite masses ...
Seite 12
... present equipment of motive power is the same as the last year , with the addition of ten eight - wheel burthen cars , nearly ready to put on the track . We could , with our present number of engines and cars , bring in about 12,000 ...
... present equipment of motive power is the same as the last year , with the addition of ten eight - wheel burthen cars , nearly ready to put on the track . We could , with our present number of engines and cars , bring in about 12,000 ...
Seite 14
... present engines are what are termed the third class , that is , they are of the lightest description usually made at the manufactories where they were obtained . Their maximum net load , at ordinary speed , on our road , is about sixty ...
... present engines are what are termed the third class , that is , they are of the lightest description usually made at the manufactories where they were obtained . Their maximum net load , at ordinary speed , on our road , is about sixty ...
Seite 20
... present , experience has settled nothing in this plan superior to the other or old breadth of four feet eight and a half inches . Mr. Brunel expected that his line was not only to be much safer , but to work considerably more ...
... present , experience has settled nothing in this plan superior to the other or old breadth of four feet eight and a half inches . Mr. Brunel expected that his line was not only to be much safer , but to work considerably more ...
Seite 27
... present day — the railway system . It had been well and truly remarked by an enlightened observer , that the great characteristic feature of the present age was the appreciation of the value of time . In an eloquent introduction to a ...
... present day — the railway system . It had been well and truly remarked by an enlightened observer , that the great characteristic feature of the present age was the appreciation of the value of time . In an eloquent introduction to a ...
Andere Ausgaben - Alle anzeigen
Häufige Begriffe und Wortgruppen
acid action advantage amount appears applied average axle become body boiler calculated carriages carried cast cause cent Clear Cloudy color common compared consequence considerable considered construction contained continued copper cost course diameter direction distance earth effect employed engines equal exhibited expense experiments fact feet force four friction give given greater ground half heat important inches increase iron laid lead length less light load machine manner material means metal mile minute mode motion moulding nearly necessary object observed obtained passed pattern pavements Philadelphia piece plate practice present pressure produced proportion quantity rails railway reference remark resistance road sand side square steam stone sufficient supposed surface taken thickness tion wall weight wheels whole yard
Beliebte Passagen
Seite 206 - ... necessary for their preservation, and in such manner as shall be conducive to a beneficial and favorable display thereof, the models and specimens of compositions and of...
Seite 354 - If it is discontinued, provided it has been once in public use, and the recollection of it has not been altogether lost — if it has been once publicly used, it will be sufficient to invalidate the letters patent, although the use may be discontinued at the time when the patent was granted.
Seite 185 - Experiments and observations made with the view of improving the art of composing and applying calcareous cements...
Seite 285 - I conceive, right to add, that in all cases, even though the composition of the water seems to bring it within the conditions of safety now stated, an attentive examination should be made of the water after it has been running for a few days through the pipes ; for it is not improbable that other circumstances, besides those hitherto ascertained, may regulate the preventive influence of the neutral salts.
Seite 318 - Scotland, for his Invention of certain improvements in the means and machinery for deepening and excavating the beds of rivers, removing sandbanks, bars, and other obstructions to navigation.
Seite 145 - The Committee on Science and the Arts constituted by the Franklin Institute of the State of Pennsylvania, for the promotion of the Mechanic Arts, to whom was referred for examination a Solar Compass, invented by WM.
Seite 136 - ... will prevent the metal from running away, and in a few minutes it will cool and take the impression, without the slightest injury to the paper from which it was taken.
Seite 28 - ... of an engineer, in regard to some of the general principles. He should accommodate a new line of road to local circumstances, so far as could be without superseding public advantages. It would be ridiculous to follow the old Roman fashion, on the mathematical axiom that a straight line is the shortest that can be drawn between two points. This would not make the most commodious road — hills must be avoided, towns must be resorted to, and the sudden bends of rivers must be shunned. It is not...
Seite 206 - And be it further enacted. That it shall be the duty of the Commissioner to cause to be classified and arranged, in such rooms or galleries as may be provided for that purpose, in suitable cases, when necessary for their preservation, and in such manner as shall be conducive to a beneficial and favorable display thereof...
Seite 355 - ... by sixteen iron screws four and a half inches in diameter. This platform has several shores on its surface, which were brought to bear equally on the vessel's bottom, to prevent her from canting over on being raised out of the water. About thirty men...