SPIRAL SPRING • FREE TRANSLATOR.ORG • Definition of Spiral spring

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/spˈaɪrəl sprɪŋ/ Listen

adjective

Spiral adj.

Winding or circling round a center or pole and gradually receding from it; as, the spiral curve of a watch spring.

Winding round a cylinder or imaginary axis, and at the same time rising or advancing forward; winding like the thread of a screw; helical.

(Geom.) Of or pertaining to a spiral; like a spiral.

Spiral gear, or Spiral wheel (Mach.), a gear resembling in general a spur gear, but having its teeth cut at an angle with its axis, or so that they form small portions of screws or spirals.

Spiral gearing, a kind of gearing sometimes used in light machinery, in which spiral gears, instead of bevel gears, are used to transmit motion between shafts that are not parallel.

Spiral operculum, an operculum whih has spiral lines of growth.

Spiral shell, any shell in which the whorls form a spiral or helix.

Spiral spring. See the Note under Spring, n., 4.

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Etymology of 'Spiral spring'

Collaborative International Dictionary of English 0.48

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"Spiral spring" Quotes from Famous Books

... measure of the vertical oscillation of the earth, a weight might be attached to a spiral spring, or a pendulum might be sustained in a horizontal position, and a sliding index be moved by either of them, so that the extreme deviations should be indicated by it. This, however, would not give even the comparative measure accurately, because a difference ...

— On the Economy of Machinery and Manufactures • Charles Babbage

... invented about the year 1500, but who was the inventor is disputed. They were, however, of little value as time-keepers, before the application of the spiral spring as a regulator to the balance; the glory of this excellent invention lies between Dr. Hooke and M. Huygens; the English ascribing it to the former, the Dutch, French, &c., to the latter. Some assert that pocket-watches were first made about 1477, at Nuremberg, in Germany. ...

— A Catechism of Familiar Things; Their History, and the Events Which Led to Their Discovery • Benziger Brothers