Watchmen's Time Detectors Operated by Batteries or Magneto Generators (1900)
Holtzer-Cabot Electric Company · Holtzer-Cabot Electric Company · leaf 107
M 4. PLATING GENERATOR. jpHESE Machines are the result of many careful tests in actual factory practice, ands will be found to safely perform much more work than is scheduled. They aremade self-exciting, with variable field for various loads. They can also be had withfields to be separately excited…
