(under the class definition) Devices include means for the automatic and periodic actuation of signals, usually by various types of motors--e.g., electric, clock-work, explosive gas, compressed air, etc. Fog-signals, danger-signals, and bird-scarers are here included.
(1) Note. Continuously-ringing clock-work-bells, signals which can be repeating the operator's acts, and similar devices are not here included; but signals that are automatically repeated at successive periods so long as their operation is continued are included.
(2) Note. When the claims cover any of the details of an electric motor, whether generally or specifically, the patent is excluded.
SEE OR SEARCH THIS CLASS, SUBCLASS:
18, for code-signals that may be periodically repeated.
SEE OR SEARCH CLASS
368, Horology: Time Measuring Systems or Devices, 248, for an horological device including a repeating alarm.
