― Experiment name: Study on material passage and general description of speed frame/ Flyer frame/ Roving frame/ Simplex m/c. ∙ Simplex MachineObjectives: ∙ 1. To draft the sliver to reduce weight per unit length. ∙ 2. To insert small amount of twist to strengthen the roving to prevent breakage during next processing. ∙ 3. To make conical or tapper shape of the bobbin. ∙ 4. To wind twisted strand on the bobbin. ∙ M/c specification: ∙ Platts [...].