Test on Horns, Type A, Submitted by Clark Cooper Company, Philadelphia, PA
Abstract
The two (2) sample horns, without making any adjustments or servicing, were set up in tests circuits at this Laboratory and tested for conformance with the specifications, reference (b). Particular attention was given the horns, while under test for endurance, to note any change in the pitch of note resulting from fractured-diaphragms or change of motor speeds. Throughout the period of the endurance and temperature rise tests a constant voltage of 115 volts, 60 cycles, was maintained. The usual inspection of materials, design and workmanship was made.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 18, 1935
- Accession Number
- AD1149747
Entities
People
- J. S. Bryant
- W. B. Roberts
Organizations
- United States Naval Research Laboratory