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the axis of the wheel, together with the pinion C, which carries the wheels D and E; and E carries the chain F, which turns the spit. The wheel AB should be placed in the narrow part of the chimney, where the motion of the smoke is swiftest, and where also the greatest part of it must strike upon the sails.—The force of this machine depends on the draught of the chimney, and the strength of the fire.
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Smoke-jack is an engine used for the same purpose as the common jack; and is so called from its being moved by means of the smoke, or rarefied air, ascending the chimney, and striking against the sails of the horizontal wheel AB (plate XXI. fig 1.), which being inclined to the horizon, is moved about
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Earlier jacks of this type had a train of two arbors (spindles), later ones had a more efficient three arbor train. In the case of
British examples, almost without exception, the governor or flywheel was set above the engine (as opposed to being located within the frame) and to one side; to the right
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A great majority of the jacks used prior to the 19th century were powered by a descending weight, often made of stone or iron, sometimes of lead. Although most commonly referred to as spit engines or jacks, these were also termed weight or clock jacks (clock jacks was the more common term in North
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Smoke-jacks are sometimes moved by means of spiral flyers coiling about a vertical axle; and at other times by a vertical wheel with sails like the float-boards of a mill: but the above is the more customary
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European jacks are characterised by a flywheel set centrally and often within the frame; commonly the highest part of the frame has a bell-like arch that the shaft for the flywheel passes through.
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in a brass shell, shaped like a bottle; it was introduced in the late 18th
Century and in many cases replaced the earlier and much more simple dangle spit.
126:), in 1551. A steam-driven jack was patented by the American clockmaker John Bailey II in 1792, and steam jacks were later commercially available in the
66:. Cooking meat on a spit dates back at least to the 1st century BC, but at first spits were turned by human power. In Britain, starting in the
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Schinto, Jeanne (1 February 2004). "The
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A steam-powered roasting jack was first described by the
Ottoman polymath and engineer
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linked to the spit by belts and pulleys. Other forms of roasting jacks included the
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27:"Bottle-jack" redirects here. For the high-capacity lifting jack, see
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Harbor & Home: Furniture of
Southeastern Massachusetts, 1710-1850
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Mathematical and
Philosophical Works of the Right Rev. John Wilkins
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A Treatise of
Mechanics: Theoretical, Practical, and Descriptive
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372:. Lebanon, NH: University Press of New England. p. 243.
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397:. Cambridge, UK: Cambridge University Press. p. 21.
58:. It can also be called a spit jack, a spit engine or a
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with four vanes. Smoke-jacks were also illustrated in
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for two train and to the left for three train engines.
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Jobe, Brock; Sullivan, Gary R.; O'Brien, Jack (2009).
440:"We road tested a Clockwork 19th Century Bottle Jack"
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For the bottle-shaped hydraulic lifting device, see
70:, dog-powered turnspits were used; the dog ran in a
161:'s book of machines (1607), and in John Wilkins's
82:, driven by hot gas rising from the fire, and the
395:Power from Wind: a History of Windmill Technology
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245:The Imperial Dictionary of the English Language
54:is a machine which rotates meat roasting on a
34:Device which rotates meat roasting on a spit
120:Al-Turuq al-samiyya fi al-alat al-ruhaniyya
424:. London: Geo. B. Whittaker, etc. p.
344:History of Science and Technology in Islam
340:"Taqi al-Din and the First Steam Turbine"
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248:. London: Blackie & Son. p. 719.
124:The Sublime Methods of Spiritual Machines
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90:, driven by weights or springs.
29:Jack (device) § Bottle jack
469:. London: S.O. Beeton. p.
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265:. Accessed October 30, 2009.
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495:Food preparation utensils
463:Beeton, Isabella (1861).
169:describes a smoke-jack:
292:10.1525/gfc.2004.4.1.33
221:History of steam engine
167:A Treatise of Mechanics
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318:Wilkins, John (1680).
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350:on February 18, 2008
196:A bottle-jack was a
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163:Mathematical Magick
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191:Bottle jack
185:Bottle-jack
116:Taqi al-Din
84:bottle jack
484:Categories
404:052156686X
354:2008-03-29
259:"turnspit"
227:References
210:Rotisserie
134:Smoke jack
110:Steam jack
99:America).
88:clock jack
80:smoke jack
76:steam jack
300:114222732
72:treadmill
450:Archived
242:(1884).
204:See also
60:turnspit
18:Turnspit
445:YouTube
155:turbine
118:in his
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146:(1802)
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520:Fire
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