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" The only deviation made from the exact average was such as might be necessary to avoid the great inconvenience of small fractional parts in the number of threads to the inch. The scale was afterwards extended to six inches. "
Minutes of Proceedings of the Institution of Civil Engineers - Page 159
by Institution of Civil Engineers (Great Britain) - 1848
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The Mechanics' Magazine, Museum, Register, Journal, and Gazette, Volume 35

Industrial arts - 1841
...deviation made from the exact average was such as might be necessary to avoid the great inconvenience of small fractional parts in the number of threads to...The scale was afterwards extended to 6 inches. The pitehes thus obtained for angular threads are shown in the following table, It will be observed that...
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Iron: An Illustrated Weekly Journal for Iron and Steel ..., Volume 35

Perry Fairfax Nursey - Industrial arts - 1841
...as might be cecessary to avoid the great inconvenience of small fractional parts in the number oí threads to the inch. The scale was afterwards extended...inches. The pitches thus obtained for angular threads are shown in the following table, It will be observed that above 1 inch sizes. This could not have...
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The Mechanic's Magazine, Museum, Register, Journal and Gazette, Volume 35

1841
...deviation made from the exact average was such as might be necessary to avoid the great inconvenience of small fractional parts in the number of threads to the inch. The scale was afterwards extended to C inches. The pitches thus obtained for angular threads are shown in the following table, It will be...
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Newton's London Journal of Arts and Sciences: Being Record of the ..., Volume 20

William Newton, Charles Frederick Partington - 1842
...England, and the average thread was carefully observed for different diameters. The J inch, | inch, and 1| inch, were particularly selected, and taken as the...fractional parts. The proportion between the pitch and the diameter varies throughout the entire scale. Thus the pitch of the | inch screw is ^th of the...
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The London journal of arts and sciences (and repertory of patent inventions ...

William Newton - 1842
...small fractional parts in the number of threads to the inch. The scale was afterwards extended to <? inches. The pitches thus obtained for angular threads...fractional parts. The proportion between the pitch and the diameter varies throughout the entire scale. Thus the pitch of the £ inch screw is yth of...
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JOURNAL OF THE FRANKLIN INSTITUTE OF THE PENNSLBANIA

THOMAS P JONES M.D AND JAMES J. MAPES A.M - 1842
...deviation made from the exact average was such as might be necessary to avoid the great inconvenience of small fractional parts in the number of threads to the inch. The scale was afterwards extended to six inches. The pitches thus obtained for angular threads are shown in the following table: It will...
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Journal of the Franklin Institute

Meteorology - 1842
...deviation made from the exact average was such as might be necessary to avoid the great inconvenience of small fractional parts in the number of threads to the inch. The scale was afterwards extended to six inches. The pitches thus obtained for angular threads are shown in the following table: It will...
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Miscellaneous Papers on Mechanical Subjects, Part 1

Joseph Whitworth - Decimal system - 1858 - 183 pages
...deviation made from the average was such as might be necessary to avoid the great inconvenience of small fractional parts in the number of threads to...inches. The pitches thus obtained for angular threads are shown in the following table : — It will be observed that above 1-inch diameter the same pitch...
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The Practical Metal-worker's Assistant ...: With the Application of the Art ...

Oliver Byrne, John Scoffern, William Clay, Sir William Fairbairn - Electrometallurgy - 1864 - 646 pages
...anc^the average thread was carefully observed for different diameters. The J inch, J inch, 1 and 1J inch, were particularly selected, and taken as the...The pitches thus obtained for angular threads were as above : Above the diameter of 1 inch the same pitch is used for two sizes, to avoid small fractional...
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The Practical Metal-workers' Assistant: ...: With the Application of the Art ...

Metal-work - 1874 - 683 pages
...observed for different diameters. The J inch, J inch, 1 and 1 J inch, were particularly selected. an$ taken as the fixed points of a scale by which the...The pitches thus obtained for angular threads were as above : Above the diameter of 1 inch the same pitch is used for two sizes, to avoid small fractional...
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