Rear mounted plastics cassette frame - has housing with window receiving insert plates locked in place by locking tongues

摘要

To form a shoulder facing the rear of the housing, the resilient tongues are set back from the edge of the window and moulded on the rear of the housing so as to run normally to the window face. - The locking elements are designed to engage in a form-locking manner between the housing and the side edges of the insert plate. - In the locked condition the insert plates rest against this shoulder. The locking elements of the tongues are consist of projections or notches to which corresponding notches or projections are assigned on the side edges of the insert plates.