A look at Marjorie Stewart Joyner permanent Hair Wave Machine. Her invention was inspired while cooking in her kitchen. She used the concept of a pot roast holder (not the kind we use today). Joyner hooked 16 pencil-shaped pot roast rods to an old-fashioned hair dryer hood and then joined them together with a single electric cord and began to examine how they could be designed to function simultaneously. It worked. 🤔 The design has been updated and refined since its origin. #marjoriejoyner…
