 | William Cawthorne Unwin - Machine design - 1877 - 352 pages
...iron, and when motion is taken from a steam-engine grooves are turned in the rim of the fly-wheel. The diameter of the smallest pulley should not be less than thirty times the diameter of the rope carried by it. The larger the pulley the less is the injury done to the rope by bending and unbending.... | |
 | Walter S. Hutton - 1885 - 486 pages
...pulley, and also from the bottom of the groove is ¡ths of the diameter of the rope. The circumference of the smallest pulley should not be less than thirty times the diameter of the rope. The circumferential velocity of the flywheel may be from 3000 to 5000 feet per minute — but a speed... | |
 | John Howard Cromwell - Belts and belting - 1885 - 302 pages
...about 7 to 15 feet in diameter commonly. It is a safe rule, that the diameter of the smaller principal pulley should not be less than thirty times the diameter of the rope, and when small ropes are used we may conveniently increase the durability by taking the diameter of... | |
 | John Howard Cromwell - Belts and belting - 1885 - 302 pages
...about 7 to 15 feet in diameter commonly. It is a safe rule, that the diameter of the smaller principal pulley should not be less than thirty times the diameter of the rope, and when small ropes are used we may conveniently increase the durability by taking the diameter of... | |
 | William Cawthorne Unwin - Machine design - 1890 - 482 pages
...iron, and when motion is taken from a steam-engine grooves are turned in the rim of the fly-wheel. The diameter of the smallest pulley should not be less than thirty times the diameter of the rope carried by it. The larger the pulley the less is the injury done to the rope by bending and unbending.... | |
 | David Allan Low, Alfred William Bevis - Machine design - 1893 - 398 pages
...Fig. 384. The diameter of a rope pulley is measured to the centre of the rope. The diameter of a rope pulley should not be less than thirty times the diameter of the rope. The larger the pulley is the less work is consumed in bending the rope as it goes on, and in straightening... | |
 | Walter S. Hutton - Engineering - 1901 - 552 pages
...pulley, and also from the bottom of the groove is £ths of the diameter of the rope. The circumference of the smallest pulley should not be less than thirty times the diameter of the rope. The circumferential velocity of the flywheel may be from 3000 to 5000 feet per minute — but a speed... | |
 | Andrew Jamieson - Mechanics, Applied - 1903 - 584 pages
...diameter of the pulley may be, ropes of 1 J inches diameter should not be exceeded for main drives, and l| inches diameter for secondary drives. The diameter...internal friction, and consequent injury to the rope from beuding and unbending (see the following table). Strength of Cotton and Hemp Ropes. — The ultimate... | |
 | American School (Chicago, Ill.) - Engineering - 1903 - 464 pages
...rim. The larger the pulley the less will be the injury done to the rope in bending and unbending. A pulley should not be less than thirty times the diameter of the rope which runs upon it. The form of the groove is a very important matter as the durability and transmitting... | |
 | American School (Lansing, Ill.) - Machine design - 1905 - 80 pages
...rim. The larger the pulley the less will be the injury done to the rope in bending and unbending. A pulley should not be less than thirty times the diameter of the rope which runs upon it. The form of the groove is a very important matter as the durability and transmitting... | |
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... of importance and should be considered for each case. The ropes commonly used for the transmission of power in factories or mills vary from 3 to 5 inches in circumference. No matter what the diameter of the pulley may be, ropes of 1| inches diameter... 
