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"Europe divided into its kingdoms, etc." (1766) Believed to be the first purpose-made jigsaw puzzle. John Spilsbury (/I.P.A. spɪlsbəri/ 1739 – 3 April 1769) [1] was a British cartographer and engraver. He is credited as the inventor of the jigsaw puzzle. Spilsbury created them for educational purposes, and called them "Dissected Maps". [2] [3]
The world's largest-sized jigsaw puzzle measured 6,122.68 m 2 (65,904.0 sq ft) with 12,320 pieces. It was assembled on 7 July 2018 at Dubai Multi Commodities Centre in United Arab Emirates. [21] The jigsaw with the greatest number of pieces had 551,232 pieces and measured 14.85 by 23.20 metres (48 ft 9 in × 76 ft 1 in).
They began making cardboard wearings in the 1930s but were best known for their jigsaw puzzles and later children's games. They made a jigsaw puzzle range named "Riders of the Range", [2] and also made games such as Ask Pickles (1948), [3] Inspector Brown, [4] and many others. By the early 1960s they were the world's largest maker of jigsaw ...
Before the First World War, Ravensburger had around 800 products. The publishing house was damaged during the Second World War but continued to produce games in the years of the reconstruction. The company focused on children's games and books and specialized books for art, architecture, and hobbies, and from 1962 grew strongly.
A jigsaw power tool is made up of an electric motor and a reciprocating saw blade. Jigsaws with sole plates that have a beveling function can cut angles typically up to 45 degrees relative to the normal vertical stroke to make miter joints. Portable jigsaws have historically been mains-powered, but are increasingly being displaced by battery ...
Hunnicutt’s book, “Kellogg’s Six-Hour Day,” tells the story of how cereal baron W.K. Kellogg decided in 1930 to institute six-hour shifts in place of eight-hour shifts, with some reduction ...
1883: The Yellow Pages are invented. The business listings directory got its iconic look by accident in 1883 when a Cheyenne, Wyoming, printer ran out of white paper and made do with yellow paper ...
Ancient stone tools from Ethiopia were hand-crafted by Australopithecus or related people. [1] [2] [further explanation needed] 2.3 Mya: Earliest likely control of fire and cooking, by Homo habilis [3] [4] [5] 1.76 Mya: Advanced stone tools in Kenya by Homo erectus [6] [7] 1.75 Mya – 150 kya: Varying estimates for the origin of language [8] [9]