1. The large spiral spring to hold the clutch in engagement is stationary. 2. Tension maintained in the spiral spring counterbalances the weight of the sash. 3. The tubular balance has a spiral spring encased in a long metal tube. 4. His design used a fast-beating balance wheel controlled by a temperature-compensated spiral spring . 5. The science of mechanics might perhaps suggest a means, namely, a strong spiral spring . 6. Brockway-Smith makes spiral spring balances, and you could order new ones through your local lumber dealer. 7. A suspension was independent, with spiral springs . 8. The bogie frames were fastened to the axle box via a revolute joint and a spiral spring . 9. On top of the truck frame was a movable iron frame carrying four posts containing heavy spiral springs . 10. A bogie check spring, having a single spiral spring , was enclosed in a box secured to the curved plates.
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