The Spinning Jenny was used to spin cotton. The device was a frame that held multiple spindles, and allowed the person operating it to spin up to eight spools at once. This number increased as technology advanced.
The Spinning Jenny was created by James Hargreaves, and named after his wife. His machine was an answer to the increase in demand from weavers. The demand had increased when John Kay created the flying shuttle and basically doubled the amount of work they could put out. The Spinning Jenny was the first improvement on the spinning wheel since its invention. The machine was one of the early examples of what is referred to as the mechanical advantage, showing how much work can be accomplished by machines versus man.Learn More
Hans Lipperhey is credited with inventing the telescope because he filed the first patent application in the Netherlands on Sept. 25, 1608. The German-born Lipperhey lived in the Netherlands, where he worked as a spectacle maker.Full Answer >
The first modern hearing aid was produced during the 1800s by companies in Philadelphia and Germany. They used technology based on the carbon transmitter and electrical amplification advances of Thomas Edison and Alexander Graham Bell. The first carbon-type hearing aid was developed in 1989 by the Dictograph Company.Full Answer >
Although widely and erroneously credited to 19th-century British plumber Thomas Crapper, the modern flush toilet was actually invented in 1596 by Sir John Harrington. His treatise, titled "A New Discourse of a Stale Subject, Called the Metamorphosis of Ajax," described an early type of flush toilet.Full Answer >
In 1498, the Chinese created the first toothbrush as it is known today with bristles and a thin handle.Toothbrushes were mentioned as far back as 3,000 BC. They were described as chew sticks that were made of twigs with split threads at the end that could be rubbed vigorously against the teeth to remove food and plaque.Full Answer >