Sickle

A sickle is a hand-held agricultural tool with a variously curved blade typically used for harvesting grain crops or cutting succulent forage chiefly for feeding livestock (either freshly cut or dried as hay).

The diversity of sickles that have been used around the globe is staggering. Between the dawn of the Iron Age and present, hundreds of region-specific variants of this basic forage-cutting tool were forged of iron, later steel. Within the industrial set-up, when the trip hammer took over from men swinging their strong arms at the anvil (between 16th and 17th century) some models of sickles were produced in up to six different sizes.

One noteworthy feature of sickles is that their edges have been made in two very distinct manners/patterns - smooth or serrated. While both can (albeit with a different technique) be used for cutting either green grass or mature cereals, it is the serrated sickle that still dominates the duty of harvesting grain - with other words the "reaping". Modern kitchen knives with serrated edges, as well as grain-harvesting machines use the same design principle as prehistoric sickles.

Read more about SickleSerrated or "toothed" Sickles, How A Sickle Is Used, Other Uses

Other articles related to "sickle":

Sickle Cell Nephropathy
... Sickle cell nephropathy is a type of nephropathy associated with sickle cell disease, it causes renal complications as a result of sickling of red blood cells in the microvasculature ... Functional tubule defects in patients with sickle cell disease are likely the result of partial ischemic injury to the renal tubules ... Also the sickle cell disease in young patients is characterized by renal hyperperfusion, glomerular hypertrophy, and hyperfiltration ...
Sickle Mountain
... Sickle Mountain (68°53′S 66°47′W / 68.883°S 66.783°W / -68.883 -66.783Coordinates 68°53′S 66°47′W / 68.883°S 66.783°W / -68. 1939–41, because its peculiar shape was suggestive of that of a sickle ... public domain material from the United States Geological Survey document "Sickle Mountain" (content from the Geographic Names Information System) ...
Sickle - Other Uses
... The sickle is used as part of the well known symbol of the hammer and sickle, which is the symbol of Communism or Revolutionary Socialism ... The sickle represents the agricultural working class or peasantry in this symbol ... emblem of the Grim Reaper - The personification of Death is sometimes portrayed as carrying a sickle rather than the more traditional scythe ...
Sickle Ridge
... Sickle Ridge (78°1′S 162°10′E / 78.017°S 162.167°E / -78.017 162.167Coordinates 78°1′S 162°10′E / 78.017°S 162.167°E / -78.017 162.167) is a ridge in East Antarctica ... The ridge has a distinctive sickle shape ... incorporates public domain material from the United States Geological Survey document "Sickle Ridge" (content from the Geographic Names Information System) ...
Sickle-cell Disease - History
... Edward Irons (1877–1959) found "peculiar elongated and sickle-shaped" cells in the blood of Walter Clement Noel, a 20-year-old first-year dental student from Grenada ... account included illustrations, but the earliest available slide showing sickle cells is that of a 1918 autopsy from a soldier with sickle trait, initially reviewed only 92 years later ... The disease was named "sickle-cell anemia" by Verne Mason in 1922, then a medical resident at Johns Hopkins Hospital ...