The Treaty of Saragossa did not modify or clarify the line of demarcation in the Treaty of Tordesillas, nor did it validate Spain's claim to equal hemispheres (180Â° each), so the two lines divided the Earth into unequal hemispheres. Portugal's portion was roughly 191Â° whereas Spain's portion was roughly 169Â°.
Transcript of The Hair Straightener: Past and Present. The Hair Straightener: Past and Present By Josephine and TaMuriel The hair straightening model that we use today was invented in 1912 by Lady Jennifer Bell Schofield, although a tool for shaping hair, called a pressing comb, was invented in 1872.
The growing uses of paper in the 19th century created a demand for an efficient paper fastener.[2] Modern paper fastening devices started with the patent of the first paper fastener on September 30, 1841 by Samuel Slocum. This crude device stuck pins on paper to fasten them. Unfortunately, a thorough examination of Slocum's patent drawing and description would indicate that this machine was not a paper fastener at all, but a machine that stuck a number of pins to paper for the purpose of packaging them in quantity. Historically, Samuel Slocum's life's work was the development and sale of pins. His invention was solely for the purpose of marketing the pins that he manufactured. On August 7, 1866, the Novelty Paper Fastener was patented by the Patent Novelty Mfg Co.