Abstract: The present invention relates to a fabric raising machine including positively controlled raising/grinding cylinders, which comprises a plurality of rotary working cylinders, circumferentially arranged on a rotary framework, and for each working cylinder, a toothed pulley, thereon are entrained a cylinder closed loop driving toothed belt and cylinder closed loop timing belt to synchronize the operations of the toothed pulleys with the teeth of the driving belt.

Abstract: A positively controlled raising cylinder raising machine, having a plurality of raising cylinders, circumferentially arranged on a rotary framework, a toothed driving belt for driving the raising cylinders being engaged with a portion of the toothed circular periphery of the raising cylinder, said toothed driving belt being driven by a transmission toothed pulley arranged around a central portion of a circumference defined by the circular periphery of the raising cylinders and operatively coupled to a driving motor, the raising cylinder driving belt being moreover engaged with a pair of switching pulleys holding the driving belt tensioned, the switching pulleys being arranged inside the circular periphery of the raising cylinders on opposite sides of said transmission toothed pulley and near the transmission toothed pulley.

Abstract: The present invention relates to an improved maintenance raising machine including a safety device for preventing damages as the fabric being raised is broken.The raising machine comprises a horizontal axis drum which can be rotatively driven about its rotary axis and which supports, on the periphery thereof, a plurality of raising cylinders, which have cylinder axes parallel to the drum axis and are rotatively driven about the respective axes. With a portion of the drum are associated cleaning brushes which can operate on the raising cylinders for cleaning the latter. The cleaning brushes are mounted on a controllably driven support which can be displaced toward or away from the drum in order to facilitate the maintenance of the raising machine to prevent damages to the brushes of the raising cylinder covers as a fabric being raised is accidentally broken.

Abstract: A seam protecting device which can be applied to drum grinding or raising machines for preventing threads connecting adjoining pieces to be processed from breaking, has at least a pair of ring-like elements, parallel to one another and connected by means of connecting beams or bars, adapted to turn about bearings and a drum provided with raising or grinding cylinders. To the pair of ring-like elements there is applied a cusp element which, under a normal condition, is located at the bottom part of the drum.