A short dictionary entry from Knight's American Mechanical Dictionary describing a warp-dyeing machine, an apparatus that draws sets of warp threads through a dye-beck. Each warp is kept separate by a pin and passes under lower and over upper rollers before reaching squeezing cylinders that press out excess color, with weighted levers regulating the pressure. An engraved illustration (Fig. 7037) shows the frame, rollers, gear drive and crank.