A New or Improved Circuit Closing Device for Speed Indicators.

  • Inventors: HANS DAHL
  • Assignees: Hans Dahl
  • Publication Date: December 07, 1901
  • Publication Number: GB-190112529-A


12,529. Dahl, H. June 19. Speed indicators.-The head f of a piston e, under a spring d in a radial cylinder b upon a rotating disc a, completes electric circuits containing indicators as it passes between pairs of parallel spring strips at different distances from the centre of the disc. The holders k of the springs may have radial and axial adjustment, and the springs may be replaced by spring buffers bearing inlaid contacts. In a modification, the contacts are in the cylinder, and are wired to fingers touching collars on the shaft.




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