Proceedings And Addresses. Celebration of the Beginning of the Second Century of the American Patent System At Washington City, D.C. April 8, 9, 10, 1891
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In our eReader you can find the full English version of the book. Read Proceedings And Addresses. Celebration of the Beginning of the Second Century of the American Patent System At Washington City, D.C. April 8, 9, 10, 1891 Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Proceedings And Addresses. Celebration of the Beginning of the Second Century of the American Patent System At Washington City, D.C. April 8, 9, 10, 1891
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Thus Messrs. Zerah Colburn and Alexander L. Holley, in their report upon the " Permanent Way of European Rail- ways," in 1858, described and figured no less than sixteen systems of English track as the principal types of what had been tried, and of these but three have survived.
For the sleepers or ties, stone blocks were used and found too rigid ; timber was laid, both as longitudinal stringers and as cross-ties, and many forms of cast-iron sleepers had been experimented with before any cross-...tie system, whether of wood or of metal, became universally accepted.
For rails, after the "fish-bellied," came the strap rail and its attendant snake heads. Then followed the edge rail, whether double-headed or with a flat foot, the inverted " U " rail, the "saddle-backed" rail bearing directly upon the ballast, and a whole host of compound rails in several pieces, together with an almost endless variety of joints, from the cast-iron chair to the fish-plate, until the present time, when the double-headed rail still obtains favor in Europe, while the foot rail is uniformly used in this country ; there being in all countries considerably less diversity of practice than there was in 1858.
What to read after Proceedings And Addresses. Celebration of the Beginning of the Second Century of the American Patent System At Washington City, D.C. April 8, 9, 10, 1891?
You can find similar books in the "Read Also" column, or choose other free books by Washington Patent Centennial Celebration to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Thus Messrs. Zerah Colburn and Alexander L. Holley, in their report upon the " Permanent Way of European Rail- ways," in 1858, described and figured no less than sixteen systems of English track as the principal types of what had been tried, and of these but three have survived.
For the sleepers or ties, stone blocks were used and found too rigid ; timber was laid, both as longitudinal stringers and as cross-ties, and many forms of cast-iron sleepers had been experimented with before any cross-...tie system, whether of wood or of metal, became universally accepted.
For rails, after the "fish-bellied," came the strap rail and its attendant snake heads. Then followed the edge rail, whether double-headed or with a flat foot, the inverted " U " rail, the "saddle-backed" rail bearing directly upon the ballast, and a whole host of compound rails in several pieces, together with an almost endless variety of joints, from the cast-iron chair to the fish-plate, until the present time, when the double-headed rail still obtains favor in Europe, while the foot rail is uniformly used in this country ; there being in all countries considerably less diversity of practice than there was in 1858.
What to read after Proceedings And Addresses. Celebration of the Beginning of the Second Century of the American Patent System At Washington City, D.C. April 8, 9, 10, 1891?
You can find similar books in the "Read Also" column, or choose other free books by Washington Patent Centennial Celebration to read onlineMoreLess
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