In the second episode of The Secret Life of Machines, Tim Hunkin and Rex Garrod delve into the background of what Hunkin refers to as the first machine to appear in the home: the sewing machine. In this episode and its accompanying comic, we meet the various inventors who first attempted to mechanize the tedious motions associated with hand-sewing, including Barthélemy Thimmonier and the man whose name eventually came to synonymous with home sewing industry, Isaac Meritt Singer.
Hunkin examines the evolution of the machine stitch and does a remarkable job explaining how the four basic motions required of a sewing machine–pushing the needle through the fabric, passing the thread around the bobbin, pulling the thread taut, and moving the fabric forward–can all be accomplished with a single drive shaft via a series of mechanical linkages. The process is memorably illustrated by a “human sewing machine” featuring four individuals each accomplishing one of the tasks.
The episode also looks at the wide variety of styles of machines produced with a visit to a collector whose organization has since grown into the International Sewing Machine Collectors Society. Hunkin finishes up the program by examining the intricate stitches that have been made possible with sewing machines, first by cams and later by stepper motors and microprocessors. The episode closes with a modern machine embroidering “This is the end.”