Self-twist spinning machine prototype developed by CSIRO in the 1960's. Made by CSIRO Division of Wool Technology in conjunction with an Australian engineering company REPCO and the International Wool Secretariat. Prototype developed in 1960's and since 1970 over 3500 have been produced and sold.Self-twisting spinning machine (protoype).Label with machine: Prototype SELF-TWIST SPINNER / This prototype spinning machine was built / at Division of Wool Technology in the mid 1960's as / part of the program which developed the Self-Twist spinning / process. / Self-Twist was commercially released in / 1970 by The Division in conjunction with the Australian / engineering company Repco, and The International Wool / Secretariat. / Since 1970 more than 3500 Self-Twist / machines have been sold. / The process offers advantages in the / speed of spinning, machine size, maintenance and energy / consumption.engineering, manufacturing, wool processing, spinning, csiro, prototype, invention, wool technology, self-twist, repco, international wool secretariat