.~ Automatic control of filling cycle by contents material
(under subclass 129) Apparatus in which the filling of the successive receivers or any one of them is responsive in some way to the presence, absence or some varying condition of the contents material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
139, for automatic control of filling systems having lateral motion of the registering head and receiver in response to a condition of the contents material.
192+, for automatic control of flow cut-off or diversion in filling systems generally, and see the search notes thereto.
SEE OR SEARCH CLASS
53, Package Making,
52+, for automatic or triggered controlled of package making systems and especially subclasses 56+, 73, 74, and 493 for triggering or control by presence of contents.