Spinning mule Rhode Island. Development over the next century and a half led to an automatic mule and to finer and stronger yarn. The ring frame, originating in New England in the 1820s, was little used in Lancashire until the 1890s. It required more energy and could not produce the finest counts. Samuel Crompton invented the spinning mule in 1779, so called because it is a hybrid of Arkwright's water frame and James Hargreaves' spinning jenny in the same way that mule is the product of crossbreeding a female horse with a male donkey (a female donkey is called a "jenny"). The
Spinning tunnel at various internet sites and in Halloween trade magazines. Another type of spinning tunnel is the stationary LED tunnel. Instead of the tunnel spinning around the bridge, LEDs that are imbedded in the walls of the tube are programmed to turn on and off in sequence, presenting the illusion of movement. While the method of visual presentation is different—light is transmitted directly to the eyes rather than reflected off a liner—the effect is the same. Spinning tunnel Spinning tunnels—which are also known as vortex tunnels or rotating tunnels—are devices used at haunted attractions and amusement parks. When people walk through