Spin′dle.
A shaft or mandrel which supports a rotating object. |
| Lathe-head. |
1. (Lathe.) The arbor or mandrel in a lathe. D is the live spindle rotating in boxes in the front and rear standards of the head. The live spindle is in the head-stock; the dead spindle is in the tail-stock, where its function is merely to center and support the object, and not to partake of its movement or impart motion.
2. (Mill.) A vertical shaft supporting the upper stone or runner of the pair in a flouring-mill. The shaft a passes through the lower stationary stone b, is connected to the rynd e of the upper stone, which it rotates, being driven by gearing or by band-and-pulley connection with the prime motor, and is usually stepped in a block d, which, in the present instance, is adjusted to vary the distance between the stones, by means of the lever e and rod f, screw-threaded at top, and raised or lowered by a nut and hand-wheel g. The parts are known as follows:—
| a, spindle. | g, damsel. |
| b, slip-driver. | h, backlash-spring. |
| c, trampot. | i, fulcrum. |
| d, lever. | k, pinion. |
| e, lighter screw. | l, set-screw. |
| f, ball, or balance-rynd. |
3. (Vehicle.) The tapering end or arm on the end of an axle-tree. The hub of the wheel is slipped on the spindle, and is secured there by a linch-pin in some cases, and by a nut in others. See axle. [2269]
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| Mill-spindle. |
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| Mill spindle. |
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| Wagon-spindle. |
4. (Spinning.) a. A skewer or an axis upon which a bobbin is placed to wind the yarn as it is spun. The kinds, of which there are many varieties, are the — Live spindle, in which the bobbin is fast on the spindle, and rotates with it. Dead spindle. A skewer, not movable, on which a bobbin revolves to wind the yarn. The drag of the bobbin depends upon its tightness on the spindle, and is adapted to the degree of twist required. Ring-spindle, one which has a traveling ring upon it. See ring and traveler. b. The distaff and spindle — the oldest known form of spinning-machinery, if such it can be called — were familiar to Egyptians, Phoenicians, Hebrews, Arabians, and Hindus, in the time of Abraham, and also to the Greeks in the time of Homer.
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| Spinning-spindle. |
5. (Weaving.) The skewer in a shuttle on which a bobbin or cop of yarn or thread is impaled. 6. The stem of a door-knob, which actuates the latch. 7. A shaft, as of a fusee. The axis of a capstan. 8. The rod which forms the axis of a vane. 9. A round, connecting piece in a chair, as those vertical pieces uniting the seat and slat top.
10. (Shipwrighting.) The upper main piece of a made mast.
11. (Founding.) The pin on which the pattern of a mold is formed.
12. (Building.) A newel-post.
