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Visualizzazione post con etichetta Patent. Mostra tutti i post
Visualizzazione post con etichetta Patent. Mostra tutti i post

sabato 6 novembre 2010

Would you like to have straight hair?

The straightener is a useful tool of turning the hair from curly to straight


A bit of history
Already in 1860 the women were using iron for ironing clothes for the urchins, before the invention of hair straightening. In 1872, Erica Feldman used heated rods to straighten your hair, while Ian Gutgold used chemicals. In 1906 Isaac K. Shero patented a heater plate with metal teeth that were included in the hair, while in 1909 he patented an ironing plate which consists of two flat irons that were heated and pressed against each other. However, the straighteners as we know them today, are attributed to the Scottish heiress Lady Jennifer Bell Schofield, who refined and combined efforts are needed before a stove with two hot irons, fitted with hinges, in 1912.Years after they were introduced in ceramic and electrical straighteners, which allow you to change settings and heat straightening.



To see the patent of a recent electric straightener click here

mercoledì 3 novembre 2010

Patent of a straight and curved objects: the paperclip

The modern paper clip was patented on November 9, 1899 to William D. Middlebrook of Waterbury, Connecticut. Middlebrook invented not just the paper clip but he also invented a machine to produce the paper clip.




Cushman and Denison  purchased the Middlebrook patent in 1899. That same year Cushman and Denison also trademarked the name "GEM" for their new paper clip. 


Definition: paper clip, gem clip, paperclip
Function: A paper clip is a device which holds several sheets of paper together
Pressure: it leaves the paper intact and can be easily removed. 
Patent: 636,272 (US) issued November 7, 1899

Inventor: William D. Middlebrook 
Criteria: First practical. Modern prototype
Nationality: American


Timeline:
1867 Samuel Fay invents and patents a Ticket Fastener that also can be used to hold paper
1899 William D. Middlebrook invents and patents paper clip and the production machine
1899 Middlebrook sells patent to Cushman & Denison
1899 Cushman & Denison trademark the name GEM for their paper clip
1901 Johan Vaaler patents paper clip
1903 George McGill patents a paper clip that looks very similar to today's version