Brand Ady + (1961 - 1972)
Stocker Kurt (1973 - 1976)
Imholz Alois + (1977 - 1978)
Brand Edwin (1979 - 1982)
Stadler Erwin + (1983 - 1987)
Nauer Franz (1988 - 1989)
Gamma Robert (1990 - 1995)
Schürch Hans (1996 - 2003)
Gamma Odilo (2004-2010)
Bless Gregor (ab 2011)