 | Frederick Overman - Building - 1851 - 452 pages
...inferior to the crank, because it causes far more friction. The throw of an eccentric is equal to twice the distance between the centre of the shaft and the centre of the eccentric. The speed «f the linear motion is irregular in this case ; it is greater in the middle of the stroke... | |
 | William Ripper - Machine design - 1890 - 264 pages
...small crank the length of whose arm is equal to the eccentricity of the eccentric sheave, that is, the distance between the centre of the shaft and the centre of the sheave. The sheave rotates within the eccentric strap just as the crank pin rotates within the connecting-rod... | |
 | Henry Wilson Spangler - Steam-engines - 1890 - 198 pages
...valve-circle for u = its greatest value. This will determine the amount of lap. Assume that 6 = 0. Take from the distance between the centre of the shaft and the •centre of the exhaust-port the length of the valve-stem. The remainder is a -(- gl . Now gl should be as long as... | |
 | Eugene Wycliffe Kerr - Force and energy - 1900 - 398 pages
...eccentric-rod by means of the valve-rod as shown in the illustration. The amount of eccentricity, or distance between the centre of the shaft and the centre of the eccentric, determines the amount of movemer1t of the valve ; the travel of the valve is twice the eccentricity.... | |
 | Eugene Wycliffe Kerr - Force and energy - 1902 - 418 pages
...eccentric-rod by means of the valve-rod as shown in the illustration. The amount of eccentricity, or distance between the centre of the shaft and the centre of the eccentric, determines the amount of movemerit of the valve; the travel of the valve is twice the eccentricity.... | |
 | Encyclopedias and dictionaries - 1907 - 890 pages
...attached to the surrounding ring. The amount of the motion communicated to the rod is equal to twice EC, the distance between the centre of the shaft and the centre of the eccentric circle. Eccentrics are used for giving a short-stroke motion to the valve and pump rods of steam-engines.... | |
 | James David Hoffman - Machine design - 1909 - 274 pages
...substituted. In the eccentric the length /' is the distance between the center of the shaft and the center of the eccentric. Second, the thrust of the sliding...section is suggested as the best shape of the frame. Investigate also for the screw and nut to resist the thrust. pounds inches inches degrees. Sdnds of... | |
 | Charles Henry Benjamin, James David Hoffman - Machine design - 1913 - 402 pages
...substituted. In the eccentric the length I' is the distance between the center of the shaft and the center of the eccentric. Second, the thrust of the sliding...section is suggested as the best shape of the frame. Investigate also for the screw and nut to resist the thrust. MACHINE DESIGN Third Alternate, Design... | |
 | Wilbur Fisk Decker - Engines - 1920 - 314 pages
...exactly the same motion to the rod as would be given by a short crank where the "throw" is equal to the distance between the centre of the shaft and the centre of the eccentric. An eccentric may be regarded as a greatly enlarged crank-pin, and it is used when it is desired to... | |
 | Henry Charles Harris - Air-compressors - 1927 - 368 pages
...lead when the crank is on the dead centre. THROW OF ECCENTRIC. The distance OO' in Fig. 77, that is, the distance between the centre of the shaft and the centre of the eccentric, is known as the throw of the eccentric. It is equivalent to (x + kz) or (lap + port opening). SETTING... | |
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First, the lever /' here becomes so small that a separate crank can not be used and an eccentric is substituted, the length of the lever /' being the distance between the centre of the shaft and the centre of the eccentric. Second, the thrust of the sliding... 
