 PITCH AND LEAD OF SCREW THREAD. The terms " pitch " and " lead " of screw threads are often confused. The pitch of a screw thread is the distance from the center of one thread to the center of the next thread, whether the screw has a single, double, triple,...  Machine-shop Mathematics - Page 35by George Wentworth, David Eugene Smith, Herbert Druery Harper - 1922 - 162 pagesFull view - About this book
 | William Henry Dooley - Mathematics - 1915 - 366 pages
...in line with this portion and then count the number of threads within the oneinch line. Pitch. — The distance from the center of one thread to the center of the next thread, measured in a line parallel to the axis, is the pitch of the thread, or the thread-pitch. Divide 1"... | |
 | William Henry Dooley - Mathematics - 1915 - 364 pages
...in line with this portion and then count the number of threads within the oneinch line. Pitch. — The distance from the center of one thread to the center of the next thread, measured in a line parallel to the axis, is the pitch of the thra'd, or the thread-pitch. Divide 1"... | |
 | Robert Henry Smith - Machine-shop practice - 1915 - 582 pages
...See Multiple Threads, p. 631. 38. The pitch of a thread is the distance along the axis of the work from the center of one thread to the center of the next, as P, Fig. 3339. The lead of a thread is the distance the screw advances in one revolution. In a single... | |
 | 1915 - 1436 pages
...Common Die Measuring Screw Threads Pitch and Lead of Screw Threads. — The pilch of a screw thread is the distance from the center of one thread to the center of the next thread. Thb applies no matter whether the screw has a single, double, triple or quadruple thread. The /tad... | |
 | William Beeler Hartman - Machine-shop practice - 1917 - 268 pages
...is turned the reverse way. These threads have what is called pitch and lead. Pitch. — The pitch is the distance from the center of one thread to the center of the next measured parallel to the axis of the screw. Thus, if it is l/g of an inch, the pitch is Y%. It is usual... | |
 | Robert William Angus - Machinery - 1917 - 360 pages
...distance from center to center to teeth measured as before is given by pi = 2p', where p' is the axial distance from the center of one thread to the center of the next one, and t = — - and as irD the ratio of the gears is - ----, in the double pitch worm this is equal... | |
 | Joseph Atkinson Shelly - Laying-out (Woodwork) - 1920 - 360 pages
...sharp knife and a straightedge. On one of the edges representing the length of the worm, the pitch or distance from the center of one thread to the center of the next should be measured; a line is then drawn from this point to the opposite corner (see diagram A, Fig.... | |
 | Theron Josiah Palmateer - Machine-shop practice - 1920 - 136 pages
...as in the case of Standard V-threads. FIG. 69 FIG. 70 FIG 71 Pitch. — The pitch of the thread is the distance from the center of one thread to the center of the one adjoining. On the end of the problem having 13 threads per inch the pitch is 1/13", so that the... | |
 | James Alfred Pratt - Machine-shop practice - 1921 - 388 pages
...familiarize ourselves; these' are "pitch " and "lead " as applied to threads; the "pitch " of a thread is the distance from the center of one thread to the center of the next, as shown in Fig. 127 at a. In order that we may understand the term "lead " let us assume that we have... | |
 | Peder Lobben - Mechanical engineering - 1922 - 512 pages
...are two different things. The " lead " in a double-threaded screw will be a distance equal to twice the distance from the center of one thread to the center of the next, but in a triple-threaded screw the lead is three times the distance from the center of one thread to... | |
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