Journal of the Franklin Institute, Band 26;Band 56

Vols. 1-69 include more or less complete patent reports of the U. S. Patent Office for years 1825-59. Cf. Index to v. 1-120 of the Journal, p. [415]

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Seite 11 - I therefore claim the application and use of plaster of paris, or gypsum in its raw state, or prepared as above, either alone or with mica, in the construction of all iron chests or safes, in the manner above described, or in any other manner substantially the same.
Seite 374 - From these it appeared that distilled water to which a known quantity of ammonia had been added furnished more ammonia than had been mixed with it ; so that apparently all distilled water contains ammonia. The water employed in the following experiments was distilled first with sulphate of alumina, and afterwards over potash, to remove any ammonia and carbonic acid that might be contained in it. In the following table, the first column gives the number of the experiment, the second the quantity of...
Seite 70 - 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, two reflecting telescopes, made by Mr.
Seite 144 - The form of the side frames can be altered to suitcir cumstancrs, so as to allow free access on all sides. 4th, It requires no Steam Engine to work it; hence the friction and other losies incident to the ordinary hammer are materially reduced.
Seite 280 - Builders its page« ofler a record of the dimensions and the particulars of the performance of steamers built or building in the United States and abroad, of which the value can be best appreciated by those engaged in the construction of steam vessels. The number of correspondents in this department is large and rapidly increasing. Artizans and practical Manufacturers, for whose benefit the Journal is particularly designed, require a periodical combining sound theory with reliable information on...
Seite 11 - ... that, upon a fair construction of the act of congress, he would be entitled to a patent. Yet he would not literally be the first and original inventor. But he would be the first to confer on the public the benefit of the invention. He would discover what is unknown, and communicate knowledge which the public had not the means of obtaining without his invention. Upon the same principle, and upon the same rule of construction, we think that Fitzgerald must be regarded as the first and original...
Seite 427 - The intensity of the blow may be modified instantly by the attendant, so as to suit ihe work; and the Ram may in like manner be arrested in its descent at any point, so that it is more completely under control than any other form known. 3d, It may be adapted to any description of work, whether for hammering...
Seite 16 - Law is, that the first inventor cannot acquire a good title to a patent if he suffers the thing invented to go into public use, or to be publicly sold for use, before he makes application for a patent.
Seite 280 - Patents from 1828 to the present day, which is digested eemi-annually and arranged chronologically, being the only complete index published regularly during that period, make it indispensable as a book of reference to those interested in this branch of Jurisprudence.

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