frequenznormal with rectilinear vibrating masses

摘要

1,130,599. Springs. UNITED STATES TIME CORP. 3 June, 1966 [13 July. 1965], No. 24973/66. Heading F2S. [Also in Division G3] A frequency standard mechanical vibrator for a timepiece (see Division G3) comprises a pair of vibrating reeds 424, 425 to which an auxiliary spring 464 is secured, the spring having a bendable portion 465 so that bending of the spring provides a frequency adjustment for the standard. Reference has been directed by the Comptroller to Specification 1,053,661.