Abstract: The present invention refers to a system wanting to accelerate dyeing time mechanizing the loading and unloading procedure of dyeing machines and consists in folding-up the fabric to be dyed outside the machine using a device capable of folding the fabric in a perforated vat reproducing both the size and shape of the kier of the dyeing machine, that is the part of the machine containing the fabric during dyeing time, and introducing the vat loaded with the fabric into the machine where the dyeing is carried out, the latter being equipped with a water-tight introduction door having previously joined the fabric to be dyed to the pass; in drawing out said vat from the machine after the dyeing procedure substituting it with a second vat containing other fabric to be dyed already folded-up.

Abstract: In a dye-bath machine, the fabric to be dyed passes in an endless loop through an overflow conduit and through a kier containing a liquid dye which is recirculated by a first pump from the kier to the upper end of the overflow conduit. The passage of the fabric through the overflow conduit is accelerated by the incorporation in the conduit of a venturi section through which dye from the bottom of the kier is pumped by a second pump, and in such manner as to accelerate the passage of the fabric through the conduit.