|Born||December 4, 1858
|Died||July 5, 1937
|Education||Public Farmington, ME schools and Wilton, ME Academy|
|Spouse(s)||Sarah Isabel (Whittier) Greenwood|
|Children||Lester Clyde Greenwood, Donald Whittier Greenwood, Vodisa Emilie (Greenwood) Magoon, Clinton Whittier Greenwood|
|Parent(s)||Zina Hyde Greenwood (father), and Emily Merrill (Fellows) Greenwood (mother)|
Chester Greenwood (December 4, 1858 – July 5, 1937), of Farmington, Maine, invented the earmuff in 1873, at the age of 15. He reportedly came up with the idea while ice skating and he asked his grandmother to sew tufts of fur between loops of wire. His patent was for improved ear protectors. He manufactured these ear protectors, providing jobs for people in the Farmington area for nearly 60 years.
Greenwood also patented a tea kettle, a variation of the steel-toothed rake, an advertising matchbox, and a machine used to produce wooden spools for wire and thread. He invented, but did not patent, an umbrella holder for mail carriers. The total number of patents Greenwood held seems to be contested: Some claim only a handful, while others claim over 100.  The memory of the latter helps boost Greenwood's historical legacy.
In addition to being an inventor, Greenwood was the owner of a bicycle business and a business involving an improved heating system. He also introduced of one of the first telephone systems in Farmington. He was an accomplished machinist, an active member of the community, a business developer, a member of the Unitarian Church and a family man. His wife, Isabel (née Whittier), was a supporter of woman suffrage. He and Isabel were parents of four children.
Chester Greenwood Day
- Maine Secretary of State Kid's Page - Famous People
- Dec. 4, 1858: It Was Very Cold the Day Chester Greenwood Was Born
- David Sharp, “Maine Town Honoring Earmuff Inventor,” The Washington Post, December 1, 2007.
- Alison McLean, “March Anniversaries: Momentous or Merely Memorable,” Smithsonian Magazine, March 2007
- Ian M. G. Quimby. 1986. “Yankee Ingenuity Is Alive and Well in Maine: An Exhibition Review”. Review of Made in Maine; Made in Maine: An Historical Overview [exhibition Catalogue]. Winterthur Portfolio 21 (2/3): 186.
- Farmington honors earmuff inventor today Portland Press Herald, December 4, 2010
- Title 1, §117: Chester Greenwood Day
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