Grinding a mounted card clothing

In combination with a card clothing mounted on a support and rotatable therewith about an axis, a grinding apparatus comprising:

• an abutment fixed radially of the axis:
• an abrasive grinding element displaceable radially outward away from the card clothing from a grinding position engaging the card clothing and the abutment to a rest position out of contact with the card clothing;
• a base juxtaposed with and fixed radially relative to the card clothing;
• means including an elastic biasing element engaged between the grinding element and the base for continuously pressing the grinding element radially of the axis toward the card clothing;
• and
• means including mechanism engaged between the base and the grinding element and separate from the biasing element for withdrawing the grinding element against the force of the biasing element into the rest position and for retaining it in the rest position, whereby when the support and card clothing are rotating and the mechanism is not retaining the grinding element in the rest position the element grinds the card clothing.