Line switch assembly for a timing mechanism

Line switch assembly for a timing mechanism

A timing mechanism has a rotating camstack which opens and closes electrical contacts that are carried by electrical contact blades which are actuated by the camstack. One of the two cooperating electrical contact blades is also actuated by a first sliding member that is manually operated by an actu...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: ZINK, DAVID E, STOUT, GARRY A
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
ELECTRIC SWITCHES
ELECTRICITY
EMERGENCY PROTECTIVE DEVICES
RELAYS
SELECTORS
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Beschreibung
Zusammenfassung:A timing mechanism has a rotating camstack which opens and closes electrical contacts that are carried by electrical contact blades which are actuated by the camstack. One of the two cooperating electrical contact blades is also actuated by a first sliding member that is manually operated by an actuator to open and close a circuit to a main power supply. Manual rotation of the camstack to set a program is prevented when the circuit to the main power supply is closed by a second sliding member that is simultaneously operated off the same actuator. A step in a cam associated with the electrical contact blade to the main power supply opens the circuit to the main power supply when there is a malfunction.