Journal of the Franklin Institute, of the State of Pennsylvania, for the Promotion of the Mechanic Arts, Vol. 52 PDF Download

Author: Franklin Institute
Publisher: Forgotten Books
ISBN: 9780656496488
Category : Technology & Engineering
Languages : en
Pages : 512

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Excerpt from Journal of the Franklin Institute, of the State of Pennsylvania, for the Promotion of the Mechanic Arts, Vol. 52: Devoted to Mechanical and Physical Science, Civil Engineering, the Arts and Manufactures, and the Recording of American and Other Patented Inventions; July December, 1851 There is but one correct principle upon which to calculate the cubic contents of excavations and embankments; and that is, by means of what is known as the Prismoidal Formula, or Rule. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Author:
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ISBN:
Category : Meteorology
Languages : en
Pages : 798

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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]

Author: Anonymous
Publisher: Palala Press
ISBN: 9781343051959
Category :
Languages : en
Pages : 918

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This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Author: Franklin Institute
Publisher: Forgotten Books
ISBN: 9781333249021
Category : Technology & Engineering
Languages : en
Pages : 472

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Excerpt from Journal of the Franklin Institute of the State of Pennsylvania for the Promotion of the Mechanic Arts, Vol. 25: January, 1853 State of the Valves of the Great Britain Locomotive, G. W. R. Cylinder, 18 x 24 inches; wheel, 8 feet; lap, 11} inch; constant lead, 5-inch; travel in full gear, 42 inches; blast orifice, 5 inches diameter. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works."

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Category : Meteorology
Languages : en
Pages : 484

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Author: Philadelphia Franklin Institute
Publisher: Forgotten Books
ISBN: 9780267925346
Category : Technology & Engineering
Languages : en
Pages : 496

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Excerpt from Journal of the Franklin Institute, of the State of Pennsylvania, for the Promotion of the Mechanic Arts, 1854, Vol. 58: Devoted to Mechanical and Physical Science, Civil Engineering, the Arts and Manufactures, and the Recording of American and Other Patented Inventions Idid not take the bearings of its sinuosities; but merely estimated its length by repeated observations of our rate of motion. According to this process of computation, we ascended it for 34 miles, although in a straight line, the distance would certainly not have exceeded about one half that amount. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Author: Franklin Institute
Publisher:
ISBN: 9781331880998
Category : Technology & Engineering
Languages : en
Pages : 510

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Excerpt from Journal of the Franklin Institute, Vol. 17 of 47: Of the State of Pennsylvania, for the Promotion of the Mechanic Arts The proof weight was fixed at 240 tons, as being double the greatest load which the bridge can, by any possibility, be ever required to bear. A heavy goods train weighs less than half a ton per foot lineal; a train, consisting entirely of locomotive engines, (which would be the heaviest of all possible trains, ) would only weigh one ton per foot lineal, and, consequently, would place a load of not more than 120 tons on a bridge of 120 feet span. The new bowstring bridge has, therefore, been proved to twice the weight which ever can be placed upon it, and to four times the weight which it is ever likely to have to bear. It is scarcely necessary to add, that the trial gave great satisfaction to all parties. These ribs are adapted for large spans, in cases where either headway is of importance, or where sufficient abutment cannot be obtained, without very heavy expense. Bridges constructed of these ribs, may be employed with perfect safety for very large spans, in precisely the same manner as ordinary girders are used for small ones. The strength of the bridge depends upon the rib, or arch, and on the tie bars, by which the extremities are held together. The vertical standards are introduced, partly to suspend the load from the arch, and partly to obtain longitudinal and transverse firmness; they also support the tie-bars. The diagonals are employed for the purpose of preventing undue deflection in the rib, when the bridge is unequally loaded. The rib itself is constructed of boiler plates and angle iron riveted up in the form of a square hollow trunk; it is strongly tied together, so that the full section of the plates and angle iron may be depended upon, to resist the crushing strain. In order to give this trunk additional lateral stiffness, the side plates, which form the top, are made to overhang, and are strengthened on the edges by angle iron, &c. The tie-bars measure about 8 inches by 1 inch each, and are introduced in sufficient numbers to take the whole strain. The ribs are supported at each end, on cast iron shoes, fixed at one end to the piers, and mounted at the other on sliding frames and rollers. This arrangement provides not only for expansion and contraction, but also for motion under a very heavy load. The action of these parts, under proof, has been found to be perfect. Cross girders, constructed entirely of wrought iron, are suspended between the ribs. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Author: Philadelphia Franklin Institute
Publisher: Forgotten Books
ISBN: 9780656096305
Category : Technology & Engineering
Languages : en
Pages : 438

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Excerpt from Journal of the Franklin Institute of the State of Pennsylvania, for the Promotion of the Mechanic Arts, Vol. 73: Devoted to Mechanical and Physical Science, Civil Engineering, the Arts and Manufactures; January, 1862 Report of sub-committee of Chemists, referred to in the foregoing and addressed to Chairman of the Committee. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Author: Philadelphia Franklin Institute
Publisher: Forgotten Books
ISBN: 9780266456346
Category : Technology & Engineering
Languages : en
Pages : 456

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Excerpt from Journal of the Franklin Institute of the State of Pennsylvania for the Promotion of the Mechanic Arts, Vol. 68: Devoted to Mechanical and Physical Science, Civil Engineering, the Arts and Manufactures, and the Recording of American and Other Patent Inventions; July, 1859 The principle upon which t e apparatus is based is, that as the pres. Sure is equal upon all the interior surface of a steam boiler, and con sequently as each unit of surface sustains the same pressure, if the steam is taken from the boiler into the apparatus by a larger orifice than that through which it is returned, the force of entry of the steam will be in greater proportion to the dimensions of the two ori fices; or, in other words, steam brought from a boiler through a pipe of a given diameter, can easily be forced into the boiler again through the other end of the pipe, provided it have a much smaller aperture. In the machine in question, the entering orifice bears but a very small proportion to that of the supply pipe, because it is necessary to allow for the loss of force occasioned by the action of the water upon the steam. In the above cut the apparatus is represented in a horizontal dispo. Aition, whereas it is now made vertical, but the only difference in the arrangement of the parts is the curving downwards of the two water pipes G and K. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Author: John F. Frazer
Publisher: Forgotten Books
ISBN: 9780282900304
Category : Technology & Engineering
Languages : en
Pages : 910

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Excerpt from Journal of the Franklin Institute of the State of Pennsylvania for the Promotion of the Mechanic Arts, 1859, Vol. 67: Devoted to Mechanical and Physical Science, Civil Engineering, the Arts and Manufactures, and the Recording of American and Other Patent Inventions Practical Observations on the Introduction of Preservative Solutions into Railway Timber. By F. Hewson, C. E. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.