In the late 1860s, Margaret Knight was employed at a paper bag plant in Massachusetts, USA. The paper bags of that period were conical in shape, tapering towards the bottom. Knight recognised that a bag with a rectangular shape and a flat bottom would hold more items. She designed a model of a machine for automatically cutting, folding and gluing paper bags with a rectangular shape and a flat bottom, and approached a machine shop to construct a working prototype from which a patent application could be filed.<\/p>\n
While the prototype was under construction, Charles Annan obtained the plans of the machine from the machine shop and filed a patent application for it. Knight subsequently filed a patent suit against Annan. Annan’s defence was that the machine was too complex for a woman to have designed. Knight was able to establish before the court that she was the true inventor; the court denied the patent to Annan and granted it to Knight. The patent (RE9202) was granted in 1871.<\/p>\n
Knight and a business partner went on to found the Eastern Paper Bag Company in Hartford, Connecticut. The company manufactured paper bags with a rectangular shape and a flat bottom using the patented machine \u2014 the same fundamental design that remains in widespread use today. The machine enabled mass production of such bags and, with minor modifications, continues to be used in substantially the same form.<\/p>\n
Knight was born in 1838 in Maine and displayed a strong interest in mechanical devices from an early age. Her first invention was a safety device designed to halt a machine upon detecting an obstruction. Over the course of her life, she was credited with more than 100 inventions and 87 patents. She was also recognised as the first woman to be awarded a US patent.<\/p>\n
This article is for general information and does not constitute legal advice. Readers should consult a qualified attorney before acting on any matter discussed here.<\/p>\n","protected":false},"excerpt":{"rendered":"
Margaret Knight\u2019s invention of the flat-bottomed paper bag machine transformed packaging and set legal precedents in patent law. Overcoming gender bias and patent theft, she secured her place as a leading woman inventor in history.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"iawp_total_views":29,"footnotes":""},"categories":[6,14],"tags":[7008,7005,7006,7428,50,3010,1587],"class_list":["post-21044","post","type-post","status-publish","format-standard","hentry","category-intellectual-property","category-patents","tag-invention-disputes","tag-margaret-knight","tag-paper-bag-machine","tag-patent-history","tag-patent-law","tag-us-patent","tag-women-inventors"],"_links":{"self":[{"href":"https:\/\/www.bananaip.com\/intellepedia\/wp-json\/wp\/v2\/posts\/21044","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bananaip.com\/intellepedia\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bananaip.com\/intellepedia\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bananaip.com\/intellepedia\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bananaip.com\/intellepedia\/wp-json\/wp\/v2\/comments?post=21044"}],"version-history":[{"count":3,"href":"https:\/\/www.bananaip.com\/intellepedia\/wp-json\/wp\/v2\/posts\/21044\/revisions"}],"predecessor-version":[{"id":149732,"href":"https:\/\/www.bananaip.com\/intellepedia\/wp-json\/wp\/v2\/posts\/21044\/revisions\/149732"}],"wp:attachment":[{"href":"https:\/\/www.bananaip.com\/intellepedia\/wp-json\/wp\/v2\/media?parent=21044"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bananaip.com\/intellepedia\/wp-json\/wp\/v2\/categories?post=21044"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bananaip.com\/intellepedia\/wp-json\/wp\/v2\/tags?post=21044"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}