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Excerpt from The Franklin Journal, and American Mechanics' Magazine, Vol. 3: Devoted to the Useful Arts, Internal Improvements, and General Science Description - The glass globe A is supported by the rod E, upon which it can freely revolve, the stand C supports also two pillars of glass, upon which are placed small conductors D D, Within which are delicate points, placed as near as possible to the surface of the globe. E is an enlarged view o...

Excerpt from New Conversations on Chemistry: Adapted to the Present State of That Science, Wherein Its Elements Are Clearly and Familiarly Explained, With One Hundred and Eighteen Engravings Illustrative of the Subject, Appropriate Questions, A List of Experiments, and a Glossary, On the FoundationsThe conversations ON chemistry, written by Mrs Marcet, have acquired and sustained a deservedly high reputation, and have un doubtedly, contributed...

Excerpt from Journal of the Franklin Institute of the State of Pennsylvania, Vol. 6: Devoted to the Mechanic Arts, Manufactures, General Science and the Recording of American and Other Patented Inventions The question of who was the first inventor is one which we are not prepared to discuss, as it belongs to another tribunal. 2. For a mode of making Woollen Roping, or Slubbing, by the "Spiral Slabbing Machine, " Austin Steele, Waterbury, New...

Excerpt from Journal of the Franklin Institute of the State of Pennsylvania and Mechanic's Register, Vol. 23: Devoted to Mechanical, and Physical Science, Civil Engineering, the Arts and Manufactures, and the Recording of American and Other Patented Inventions This determination was promptly followed up by suggestions for various lines of rail~road, stretching from the principal Atlantic cities of the south, to the interior of our Union, wher...

Excerpt from Journal of the Franklin Institute of the State of Pennsylvania, Vol. 11: And American Repertory of Mechanical and Physical Science, Civil Engineering, the Arts and Manufactures, and of American and Other Patented Inventions The bridge account, however, is upwards of $49, 000 greater than that of last year. This serious addition to the expenditures of the year is attributed to the necessity in which the Company was placed, of havi...

Excerpt from Journal of the Franklin Institute, Vol. 14: Of the State of Pennsylvania, and American Repertory of Mechanical and Physical Science, Civil Engineering, the Arts and Manufactures, and of American and Other Patented Inventions The gross receipts from all sources for the year 1846, were, The expenditures for same period, including current expenses, additional machinery, improvements on depot, interest account, paving Meeting street...

Excerpt from Journal of the Franklin Institute of the State of Pennsylvania, Vol. 8: Devoted to the Mechanic Arts, Manufactures, General Science, and the Recording of American and Other Patented Inventions A cube and a sphere were to be made, and their relative masses ascertained hydrostatically. An approximation as inferior to that which the mathematician has obtained, as matter is inferior to mind. Others have proposed to cut a square and a...

Excerpt from Journal of Franklin Institute of the State of Pennsylvania and Mechanics' Register, Vol. 25: Devoted to Mechanical and Physical Science, Civil Engineering, the Arts and Manufactures, and the Recording of American and Other Patented Inventions Dr. Hare, no doubt unintentionally, entirely misstates my views, when he says that I "think it expedient to have it enter near or through the floor." This represents me as writing nonsense -...

Excerpt from Journal of the Franklin Institute of the State of Pennsylvania, Vol. 7: Devoted to the Mechanic Arts, Manufactures, General Science and the Recording of American and Other Patented InventionsWe think it unnecessary to describe this machine, as it wears the uniform of the regiment to which it belongs, and if there is any dif ference in its accoutrements, these are not specified in its commis sion. The whole machine, with its cylind...

Excerpt from Journal of the Franklin Institute of the State of Pennsylvania, Vol. 7: And American Repertory of Mechanical and Physical Science, Civil Engineering, the Arts and Manufactures, and of American and Other Patented Inventions I must lay before the reader certain details which have been used in the construction of the formula. In anticipation of this explanation, however, I may observe that the true cause is, that these circumstances...

Excerpt from Journal of the Franklin Institute of the State of Pennsylvania, Vol. 6: And American Repertory of Mechanical and Physical Science, Civil Engineering, the Arts and Manufactures, and of American and Other Patented InventionsBut Vauban is still more explicit in the instructions with which he accompanied his general profile, wherein he says: This profile is accommodated to various heights of walls, is proportioned with ref erence to t...

Excerpt from Journal of the Franklin Institute of the State of Pennsylvania and Mechanics' Register, Vol. 1: Devoted to Mechanical and Physical Science, Civil Engineering, the Arts and Manufactures, and the Recording of American and Other Patented Inventions The Committee will endeavour, at the earliest possible date, to procure such notices of the various manufacturing establishments, machine shops, &c., of Philadelphia, as may serve to give...

Excerpt from Journal of the Franklin Institute of the State of Pennsylvania, Vol. 4: Devoted to the Mechanic Arts, Manufactures, General Science, and the Recording of American and Other Patented Inventions From the time when it was known that the acetate of alumine was preferable, as a mordant, to alum, it was admitted, as a necessary consequence of this discovery, that the best proportions for obtaining the acetate, were precisely those in w...

Excerpt from Journal of the Franklin Institute of the State of Pennsylvania and Mechanics' Register, Vol. 26: Devoted to Mechanical and Physical Science, Civil Engineering, the Arts and Manufactures, and the Recording of American and Other Patented Inventions This subject has been frequently recalled to my notice in other countries. Any remark which I might chance to make on the bad effects of not limiting the hours of infant labour in other ...

Excerpt from Journal of the Franklin Institute of the State of Pennsylvania, Vol. 3: And American Repertory of Mechanical and Physical Science, Civil Engineering, the Arts and Manufactures, and of American and Other Patented Inventions Within the last few years, internal improvements, principally railroads, have made very great progress upon the continent of Europe. The example given first by Great Britain, and later, on a much larger scale, ...

Excerpt from Journal of the Franklin Institute of the State of Pennsylvania and Mechanics' Register, Vol. 21: Devoted to Mechanical and Physical Science, Civil Engineering, the Arts and Manufactures, and the Recording of American and Other Patented Inventions This contradiction between the results obtained by Mr. Faujas de Saint-Fond and Mr. Chaptal is easily explained, for one used hydraulic lime in his experiments, and the other used fat li...

Excerpt from Journal of the Franklin Institute of the State of Pennsylvania, Vol. 12: And American Repertory of Mechanical and Physical Science, Civil Engineering, the Arts and Manufactures, and of American and Other Patented Invention The facts and considerations, which have been adduced in the foregoing examinations, are probably sufficient to sustain this position, but I prefer, for further illustration, to compare the construction of thes...

Excerpt from Journal of the Franklin Institute of the State of Pennsylvania, 1833, Vol. 12: Devoted to the Mechanic Arts, Manufactures, General Science, and the Recording of American and Other Patented InventionsThe great difficulty in resorting to this means of discrimination, is, that an electrified body may, by induction, produce in a conductor al ternately, Opposite states of electrical excitement. As it approximates the conductor, it may ...