Patent ID: 8490672

Claim:
A device ( 7 ) for fastening a tarpaulin ( 2 ) to a winding roller ( 3 ) with a welt rail ( 4 ) comprising a first claw element ( 9 ) comprising an abutting area ( 12 ) having a curved shape and two free ends ( 20 ) between which is defined the abutting area for engaging with a first limiting edge ( 5 ) of the welt rail ( 4 ), a second claw element ( 10 ) comprising an abutting area ( 12 ) having a curved shape and two free ends ( 20 ) between which is defined the abutting area for engaging with a second, limiting edge ( 6 ) of the welt rail ( 4 ) lying opposite to the first limiting edge ( 5 ), the claw elements ( 9 , 10 ) being swingably connected with each other for the fastening device ( 7 ) to snap into and become jammed in the welt rail ( 4 ), and wherein for connecting the claw elements ( 9 , 10 ) there is envisaged a joint, which is transferable into a beyond-dead-centre position for the snapping-in of the claw elements ( 9 , 10 ) into the welt rail ( 4 ), and wherein when the fastening device is inserted in the welt rail, the second claw element covers the opening of the welt rail with an extension that makes contact with the first claw element, so that the circular outer contour of the winding roller is completed by the fastening device.