Improvements in Design and Construction of Quartz Helix Balances

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Abstract
The methods previously used for drawing quartz fiber and winding the fiber into helical springs may be considerably simplified by using a machinist's lathe for both operations. This makes available all the necessary mechanical motions, without constructing special units for the purpose. Fiber may be drawn uniformly to any predetermined diameter between 1.6 and 10 mils and wound with any desired coil diameter and pitch. In the section on helix design, the performance of a helical balance is analyzed quantitatively in terms of its sensitivity, load capacity, and loaded length. It is shown that an optimum relationship exists between these characteristics, and a method is developed for specifying the dimensions of the helical balance which will give optimum performance in a given application.

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