Patent ID: 7234808

Claim:
Glasses, in particular industrial safety glasses, comprising: a frame with side pieces which are attached thereto by a side-piece projection; and two eyeholes with encircling grooves having sight pieces inserted in the grooves; the frame being divided in the vicinity of the eyeholes for expansion and exchange of the sight pieces and, in the closed position, being lockable by a locking device; the frame ( 2 ) being divided in the vicinity of the side-piece projection ( 9 , 17 ) and the side-piece projection ( 9 , 17 ), in prolongation of the divided area ( 7 ) of the frame ( 2 ), being divided into a top projection ( 9 ) of a top frame member ( 6 ) and a bottom projection ( 17 ); wherein a pivoted locking device ( 13 ) having an attached sleeve ( 15 ) is slidable from behind onto the projection ( 9 ) of the top frame member ( 6 ) by means of the attached sleeve ( 15 ) and is thereafter rotatable into locking engagement with the bottom projection ( 17 ).