A Manual of Machine Drawing and DesignLongmans, 1898 - 375 páginas |
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Página 49
... double the strength of the square thread , because for a given height of nut the amount of material at the root of the thread , to resist the shearing action of the load , is about double in the V thread what it is in the square thread ...
... double the strength of the square thread , because for a given height of nut the amount of material at the root of the thread , to resist the shearing action of the load , is about double in the V thread what it is in the square thread ...
Página 51
... double - threaded , and Fig . 84 a treble- threaded screw , the pitch being the same in each case . It will be observed that the diameter of the screw at the bottom of the thread in Fig . 83 is greater than the corresponding diameter in ...
... double - threaded , and Fig . 84 a treble- threaded screw , the pitch being the same in each case . It will be observed that the diameter of the screw at the bottom of the thread in Fig . 83 is greater than the corresponding diameter in ...
Página 89
... double riveted . For the circum- ferential seams single riveting is sufficient . Fig . 243 shows the best form of circum- ferential seam . This design not only main- tains uniformity in the internal diameter of the pipe , but greater ...
... double riveted . For the circum- ferential seams single riveting is sufficient . Fig . 243 shows the best form of circum- ferential seam . This design not only main- tains uniformity in the internal diameter of the pipe , but greater ...
Página 91
... double when cold without showing sign of fracture . The above - named tensile tests are to be made on carefully prepared pieces , each with a sectional area of not less than 75 square inch , and a length of not more than 8 inches ...
... double when cold without showing sign of fracture . The above - named tensile tests are to be made on carefully prepared pieces , each with a sectional area of not less than 75 square inch , and a length of not more than 8 inches ...
Página 134
... double belts of two thicknesses of leather . In the system of making belts introduced by Messrs . Sampson & Co. , of Stroud , a large disc of leather is cut from the hide , and after being cured and dressed in the usual way it is cut in ...
... double belts of two thicknesses of leather . In the system of making belts introduced by Messrs . Sampson & Co. , of Stroud , a large disc of leather is cut from the hide , and after being cured and dressed in the usual way it is cut in ...
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Términos y frases comunes
arms axis bearing belt bending bending moment boiler bolt brass butt joint cast-iron centre condenser connecting-rod copper cotter crank crank-pin cross-head Crown 8vo curve cylinder D₁ D₂ Diagrams Diam dimensions drawing eccentric equal example feet fire-box flange force formula friction furnace gearing groove hole horse-power Illustrations inches in diameter iron joint lap joints length load locomotive low-pressure cylinder mean effective pressure metal packing piece pipe piston piston-rod pitch circle pounds per square practice pressure proportions published by Longmans pulley Pump radius resistance revolutions per minute ring rivets rope Scientific Works published screw thread screwed shaft shearing shell shown in Fig side speed Split pin square inch stays steam steel strap strength stress stroke Studs stuffing-box surface T₁ taper teeth tenacity tension thickness thread tons per square velocity weight wheel width Woodcuts wrought-iron
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Página 40 - ... elongation of not less than 20 per cent, in a length of 8 inches.