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Hanayama is a Japanese toy company founded in 1933. [1] They are best known for their series of metal disassembly puzzles, "Huzzle []" (also known as "Cast Puzzle"), which include reproductions of older designs, and new puzzles by other inventors such as Oskar van Deventer and Akio Yamamoto. [2]
Wire puzzles, or nail puzzles consist of two or more entangled pieces of more or less stiff wire, metal rods, or bent nails. The pieces may or may not be closed loops. The closed pieces might be simple rings or have more complex shapes. Normally the puzzle must be solved by disentangling the two pieces without bending or cutting the wires. [10]
Jumbo Games is a Dutch founded jigsaw puzzle and games company which was established in 1853 and is owned by M&R de Monchy N.V. Jumbo Games produce and manufacture all of their jigsaw puzzles and cardboard based games in their own factory that is based in the Netherlands.
Gilbert cloud chamber, assembled An alternative view of kit contents. The lab contained a cloud chamber allowing the viewer to watch alpha particles traveling at 12,000 miles per second (19,000,000 m/s), a spinthariscope showing the results of radioactive disintegration on a fluorescent screen, and an electroscope measuring the radioactivity of different substances in the set.
1973 - Ertl begins manufacturing plastic model kits; 1974 - Ertl acquires Structo Stamped Steel; 1977 - Kidde, Inc. acquires Ertl with purchase of Victor Comptometer Corp; 1981 - Ertl acquires AMT model kit company [1] 1985 - Ertl acquires MPC model kits; 1986 - Ertl produces Thomas & Friends licensed toys; 1987 - Hanson plc purchases Kidde.
A noteworthy puzzle, known as the Chinese rings, Cardans' rings, the Baguenaudier or the Renaissance puzzle was mentioned in circa 1500 as Problem 107 of the manuscript De Viribus Quantitatis by Luca Pacioli. The puzzle is again referred to by Girolamo Cardano in the 1550 edition of his book De subtililate. Although the puzzle is a ...
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