Journal of the Franklin Institute of the State of Pennsylvania for the Promotion of the Mechanic Arts PDF Download

Author: Frankling Institute
Publisher: Forgotten Books
ISBN: 9781334178429
Category : Technology & Engineering
Languages : en
Pages : 478

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Excerpt from Journal of the Franklin Institute of the State of Pennsylvania, for the Promotion of the Mechanic Arts, Vol. 69: Devoted to Mechanical and Physical Science, Civil Engineering, the Arts and Manufactures, and the Recording of American and Other Patent Inventions; January, 1860 The practical difficulty that arises by the adoption of short tubes, is the necessity of increasing the number to obtain that heating surface which the ship-owner expects to receive from the manufacturing engi neer, and which he is not inclined to lessen, although with the improved arrangement it may be more effective. In considering the question of diameter and length of tubes, there are two points to be noticed: first, the sectional area through the tubes being sufficient to receive and convey the expanded gases from the fur nace without retarding the same; and, secondly, reducing the length of tube to a minimum consistent with the heating surface required, and the number of tubes that can be conveniently introduced.' It is not our wish to lay down the law on a subject so full of dith culty, but we can safely indicate in what direction we have erred, and what course should be pursued to remedy those errors. An imperfect and sluggish combustion is the inevitable result of con traction in the sectional area through the tubes, and a waste of fuel is as inevitable where there is a deficiency of heating surface for a given rate and amount of combustion. Numerous cases occur in daily practice in which both the above errors are existing, and are simply the result of defective information in the designer. It is not unusual to find a difference of 25 per cent. In the areas of the chimneys of boilers of the same size and proportions; considering that the heated products of combustion gradually cool and contract as they leave the tubes, and that the frictional surface is reduced from about 13 to 1, there can be no doubt that the sectional area of the fun nel should be considerably less than that through the tubes; we find, however, frequent instances, where the chimney is as large, and even larger in sectional area than the tubes. Then who decides on the height of the chimney? Why, frequently even in large establishments the draughtsman who prepares the rig ging plans, so as to make it look well with his spars, &c. Thus often a boiler that requires an unusually high chimney has a low one. 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:
Publisher:
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: Pennsylvania Franklin Institute
Publisher: Forgotten Books
ISBN: 9780266494867
Category : Technology & Engineering
Languages : en
Pages : 450

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Excerpt from Journal of the Franklin Institute of the State of Pennsylvania, for the Promotion of the Mechanic Arts, Vol. 71: Devoted to Mechanical and Physical Science, Civil Engineering, the Arts and Manufactures, and the Record of Patent Inventions This road, uniting the valleys Of the Allier and Loire, presents in its central portion a varied profile, calling for the construction of a great number of works, no one in particular having a marked impor tance above other structures of late years; for its tunnels are not so long as those of Blaisy or of Credo, nor are its viaducts comparable in height to those of Gartempe or of Chaumont; but there is a variety in the works their dimensions, though more common in practice, are still important, and in this regard a description of them may be use ful. Moreover, there are valuable facts and figures to be cited, and accidents to be mentioned, which, though unattended with serious con sequences, may indicate in certain cases the precautions to be taken, and the dangers to be shunned. 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: 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:
Publisher:
ISBN:
Category : Meteorology
Languages : en
Pages : 484

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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: Franklin Institute
Publisher: Forgotten Books
ISBN: 9780267877683
Category : Technology & Engineering
Languages : en
Pages : 470

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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 These results prove that the link-motion is capable of cutting of? Steam as early in the course of the stroke as can ever be advisable in practice. 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.

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: John F. Frazer
Publisher: Forgotten Books
ISBN: 9780366621361
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. 76: Devoted to Mechanical and Physical Science, Civil Engineering, the Arts and Manufactures; July-December 1863 Prevention of Decay in Timber for Shipbuilding and other Purposes. From the Journal of the Society of Arts, No. 519. 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.