Abstract: In an apparatus at a carding machine for grinding a clothing drawn onto a rotating roller, having a carrying device with at least one grinding element, the carrying device is attached to the carding machine. In order to make it possible, by means that are simple in terms of construction and installation, to reduce the preparation time, the grinding device with the at least one grinding element is interchangeable with one of a plurality of cover elements and/or work elements associated with the roller.

Abstract: A grinding device for the flats of a card comprises elastically bendable elements which enter between the clothing points, brush over the side flanks of the points and thereby grind the points. Additional grinding elements are provided in order to treat the front sides of the clothing points. The ground-off material may be removed by a suction device.

Abstract: The present invention provides a grinding cup (31) having a lower grinding section (32) and an upper body section (33) connected to form a grinding cup having top (34) and bottom surfaces (35). The grinding section (32) is formed from a material capable of grinding the hard materials such as tungsten carbide inserts of button bits etc. A centrally disposed convex recess is formed in the bottom surface (35) having the desired size and profile for the button to be ground. Drive means (38) are provided on or in the upper body section that cooperate with the output shaft of the grinding machine. The drive means (38) and the upper body section or grinding section (33) of the grinding cup are adapted to optimize the engagement surfaces and points of contact between the grinding cup (31) and rotor or adapter to reduce negative impact on operational stability and rotor wear, as well as other potential associated wear to the grinding apparatus caused by vibration and/or resonance.

Abstract: A grinding device for the flats of a card comprises elastically bendable elements which enter between the card clothing points, brush across the lateral surface of the points and thus grind them, whereat the material that has been ground off is removed by a suction means. The grinding device may be portable so as to be used on different card machines. A control system may be provided to engage and operate the device in an interrmitten manner.