Chemical Plastic

July 21, 2010

paper plastic history

Filed under: Chemical Related Story — Administrator @ 6:07 am

In 1852 Francis Wolle patented in the United States, and later in France and England, a machine that he devised for making paper bags. It was the first of its kind, and covers the fundamental principle of the many similar machines that are now used. Paper bag is used for holding customer’s purchases. Allowing customer to purchase and carry more products

Here are milestone of paper bags:

1869 Francis Wolle and his brother and other paper bag makers found Union Paper Bag Machine Company.
1870 Margret Knight invents a device to cut, fold and paste paper bag bottoms, Margaret Knight of Boston is credited with about 90 inventions and 22 patents. Her patents covered textile and shoe-making machinery, domestic devices, and even a “sleeve-valve” automobile engine. Knight’s greatest success, however, was the first machine to make the square-bottomed paper bags. Others had been trying to develop such a machine for years, since the envelope-shaped bags then used were narrow and flimsy.
About two years after the Civil War she went to work for the Columbia Paper Bag Company in Springfield, Massachusetts. While in the factory, she invented a device to cut, fold and paste bag bottoms. Initially her employer complained about the time she spent on the device. When she suggested she might consider selling the rights to him if it worked, he gave in. After doing thousands of trial bags on a wooden machine, she had an iron model produced in Boston.

However, before she could place the patent application, she found a man named Charles Annan who had studied her machine while visiting the factory was attempting to a patent machine suspiciously similar to her own. Knight, 33 at the time, filed a patent interference suit against Annan. She played to win, spending $100 a day plus expenses for 16 days of depositions of herself and other key Boston witnesses. Annan claimed that because Knight was a woman she could not possibly understand the mechanical complexities of the machine. Due to her careful notes, diary entries, samples and expertise the court ruled in her favor.
The paper bag-folding machine was not Knight’s only invention. Besides devices that improved her paper bag machine, her other inventions included a new window frame and sash design, a numbering machine, an automatic boring tool, and a spinning or sewing machine. The total number of her inventions is generally thought to be eighty-nine. They earned her a good deal of money, but when she died in 1914 her fortune had dwindled down to a mere $300.
1872 132,890 (US) issued November 12, 1872 to Charles Annan for paper bag machine
1883 Charles Stilwell awarded patent for making Square-Bottom Paper Bag w/ pleated sides
1890 William Purvis on August 19, 1890 for a paper-bag machine, the combination of two suction-formers having perforated surfaces, between which the ends of the paper tube are fed, and provided with two independent grooves arranged at different positions of the length of the formers and out of line with each other. He later licensed the paper bag invention to Union Paper Bag Co, of New York.

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