A STUDY OF THE NON-UNIFORMITY IN RUNNING RATES OF A CERTAIN TYPE OF TIME DELAY MECHANISM

Abstract

From a study of nearly 300 samples of a certain type of clock mechanism it was found that the period varies some 8% above and below the most popular value. The most important reasons for this variation are (1) the differences in geometrical dimensions of the verges, (2) the differences in the center to center spacing of verge and starwheel shafts, (3) the friction of the gear train which transmits the torque from the spring to the starwheel. It was shown that shape or condition of shafts and bearing holes is relatively unimportant. Less important effects were also noted. All work described was carried out on the assumption that the mechanism is not being accelerated as a whole.

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Document Details

Document Type
Technical Report
Publication Date
Aug 31, 1954
Accession Number
AD0653773

Entities

Organizations

  • Virginia Military Institute

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Bearings
  • Carbon Tetrachloride
  • Clocks
  • Collisions
  • Diameters
  • Frequency
  • Friction
  • Generators
  • Inertia
  • Lubrication
  • Measurement
  • Microscopes
  • Moment Of Inertia
  • Shape
  • Shoulder
  • Statistical Tests
  • Surface Properties

Readers

  • Control Systems Engineering.
  • Defense Technology Research and Development.
  • Theoretical Analysis.

Technology Areas

  • Space
  • Space - Hall-Effect Thruster