
    428 A.2d 254
    Rutherford et al., Appellants v. Keim.
    Argued December 3, 1979.
    Karen Balaban, for appellants;
    William F. Martson, for appellee.
    Before HESTER, MONTGOMERY and CIRILLO, JJ.
    
    
      
       Judge Vincent A. Cirillo, of the Court of Common Pleas of Montgomery County, Pennsylvania, is sitting by designation.
    
   Order of the court below affirmed.  