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Topic: Mechanism (horology)

	fascination: Electrical horology systems
		Older mechanical pendulum clocks with electrical winding mechanisms were derived from mantel clock movements in which the striking train was modified to generate the trigger pulses for the external dials.
		The control mechanism has the task of momentarily activating a contact once a minute (for a duration of several milliseconds up to a second) to send a positive and negative impulse to the secondary clocks.
		Mechanical power for driving the inductor is also (or mainly) provided by the drive weight.
	www.faszination.ch /e_anlg_e.htm (2105 words)

	Anchor Clock Escapement
		The earliest record of a mechanical clock with an escapement, which is believed to date around 1285, was a reference to a payment for a hired clock keeper at St. Paul’s in London.
		All the early mechanical timepieces are believed to have had a verge and foliot as the control mechanism for measuring the passage of time.
		The control mechanism consists of an oscillating device that prevents the gear train from rotating, except at specific intervals, when it releases one tooth of the last gear in the train.
	www.angelfire.com /ut/horology/anchor.html (3975 words)

	US PATENT CLASS 194-- Class Notes
		This is the generic and residual class for control mechanisms adapted to be actuated by check means, and whose function is to govern the operation of an associated machine or system.
		This class provides for such control mechanisms, per se, the combination of such control mechanism with either a machine or system, a cabinet structure containing the control mechanism peculiar to this class (e.g., a value accumulator, a coin chute, etc.), or a check, per se, designed specifically to actuate a control mechanism.
		mechanism is modified to adapt especially for use with telephone circuitry, or wherein the telephone circuitry is modified by reason of the presence of the control mechanism.
	www.patentec.com /data/class/defs/194/0.html (469 words)

	Mechanical magic in three dimensions - Montres Passion (Site not responding. Last check: 2007-10-12)
		The first filed a patent for a mechanism integrated into the watch that provided the means to adjust the hands; the second added the possibility to wind up the barrel using the same mechanism.
		The whole mechanism is covered by the lever-spring which specific form serves as an identification of a family of clockwork movements (for the experts).
		In any case, it was necessary to adjust the mechanism at the end of 30 days months to compensate for the missing day, as well as for the 28th or 29th (leap year) of February.
	www.zvisuel.ch /montrespassion/english (6470 words)

	Mechanism - Wikipedia, the free encyclopedia
		Mechanism (technology), some technical aspect of a larger process or device, cf.
		Mechanism (philosophy), a theory that all natural phenomena can be explained by physical causes
		Mechanism of action, the means by which a drug exerts its biological effects
	en.wikipedia.org /wiki/Mechanism (143 words)

	How does an Up/Down Indicator Watch Work?
		It may well be asked whether it is necessary to introduce a complicated piece of mechanism to give such an indication; a person of regular habits winds his watch regularly in the morning or evening, but everyone is not regular.
		Marine chronometers come into this category, and the up-and-down mechanism consists merely of a pinion mounted on the fusee arbor engaging with a wheel, which carries the up-and-down hand; this wheel turns on a stud.
		The power absorbed by this mechanism is exceedingly small, as the wheels are well made and the moving parts nicely free on their arbors.
	www.vintagezodiacs.com /Articles/ud.html (2430 words)

	Restoration of St. Mark's Tower Clock in Venice
		They relied on the misconception that such wheels had "substituted" the mechanism that permitted the carousel of the Magi, a mechanism which, in their opinion, was suppressed because of the wheels' clumsy presence.
		Brusa argues that "the apparatus, moved by its own mechanism, obviously needed to be connected and synchronized with the main train of the clock, with the consequence of interfering to some extent with the functioning in general and with precision in particular" (p.
		Brusa's pamphlet closes on a covert admission: "The mechanism that moves the carousel with the Magi procession has also been restored, but the project of disengaging the paneled wheels with digits to facilitate the periodicity of the procession could not be accepted as it seemed too significant an innovation in the circumstance".
	www.orologeria.com /english/tower/tower1.htm (4154 words)

	Class Definition for Class 368 - HOROLOGY: TIME MEASURING SYSTEMS OR DEVICES
		Subject matter wherein the disparate device is a transportation mechanism or an element of a transportation mechanism.
		Subject matter wherein a pointer is movable under the direction of a time-keeping mechanism and pointing to a particular memorandum, or part thereof, which is pertinent to a user, for a given time or time period.
		Subject matter relating to the general organization and mechanism or circuitry of plural timepieces whereby the displays of any number of these timepieces in remote, different localities are operated from a central station.
	www.uspto.gov /go/classification/uspc368/defs368.htm (2805 words)

	Watch Glossary - Bernard Co.
		On the basis of the principle of terrestrial attraction, a rotor turns and transmits its energy to the spring by means of an appropriate mechanism.
		Marine Chronometer: Highly accurate mechanical or electronic timekeeper enclosed in a box (hence the term box chronometer), used for determining the longitude on board ship.Marine chronometers with mechanical movements are mounted on gimbals so that they remain in the horizontal position is necessary for their precision.
		Mechanical Movement: A movement based on a mainspring which is wound by hand; when wound, it slowly unwinds the spring in an even motion.
	www.bernardwatch.com /glossary.cfm (4097 words)

	RonGallant.com - Watch Glossary (Site not responding. Last check: 2007-10-12)
		A movement that is all mechanical and requires no winding because the rotor, part of the automatic mechanism, winds the mainspring every time you move your hand.
		A mechanical or solid state watch in which the time shows through changes of digits, rather than positions of hands on the dial.
		The round carriage or "cage" of the tourbillon holds the mechanisms that rotate the wheels, and thus the hands of the watch, in a continuous rate of once per minute.
	rongallant.com /pages/horology/watch-glossary.php (3877 words)

	No. 1506: The First Mechanical Clocks
		Mechanical clocks replaced the old water clocks, which, by the 13th century, had been around for millennia.
		What makes a mechanical clock is a mechanism called an escapement -- the balance wheel on a watch or the pendulum on a grandfather's clock.
		It wasn't long before mechanical clocks swept the imagination of the Western world and created new standards of precision in instruments and ultimately in thought itself.
	www.uh.edu /engines/epi1506.htm (594 words)

	mechanism - Hutchinson encyclopedia article about mechanism (Site not responding. Last check: 2007-10-12)
		Mechanists hold that all natural phenomena admit of mechanical explanation, and that no reference to teleology (purpose or design) is necessary.
		In political philosophy, mechanists (like English thinkers Thomas Hobbes, John Locke, Jeremy Bentham, and J S Mill) see the state as more or less the sum of the individuals composing it, and not as an entity in its own right (which is organicism).
		Just as in the mechanism of a clock, so in the mechanism of the military machine, an impulse once given leads to the final result; and just as indifferently quiescent till the moment when motion is transmitted to them are the parts of the mechanism which the impulse has not yet reached.
	encyclopedia.farlex.com /Mechanism (217 words)

	The St Mark's Clock, Venice
		The old mechanism and the original astronomical dial were given to him in part payment.
		The changes reflected the innovations introduced in horology during the previous 250 years; a Graham 'deadbeat' escapement was adopted together with a 1828bph (1.97s) pendulum; quite a long and unusual one.
		Sketch of the mechanism drawn by A. Peratoner.
	www.orologeria.com /english/tower/tower3.htm (1953 words)

	Mechanism (technology) - Wikipedia, the free encyclopedia
		A mechanism is some technical aspect of a larger process or mechanical device, a part or combination of parts designed to perform a particular function.
		Some examples are the steering mechanism in a car, or the winding mechanism of a wristwatch, or the mechanism of action of a drug.
		In chemistry, a reaction mechanism is the step by step sequence of elementary reactions by which overall chemical change occurs.
	en.wikipedia.org /wiki/Mechanism_(science) (131 words)

	Experimental Electromagnetic Clocks
		I wondered if the mechanism used by these clocks would be capable of driving a good pendulum with accuracy, and I have found that it is.
		The suspension is a 3/16" strip of.004" spring steel, and hangs from a slit cut in a horizontal length of brass rod.
		My results show that the impulse mechanism of a common quartz pendulum is capable of precision timekeeping when applied to a proper pendulum.
	www.bmumford.com /clocks/hj/hj0199.html (2501 words)

	TimeOutlet.com Documents
		MECHANICAL WATCH: A mechanical watch has no battery, yet is more than accurate enough for daily use.
		In fact, a good mechanical watch is often more accurate over a short period of time than a quartz watch.
		Mechanical watches have no batteries, are very durable, and often become heirlooms that are handed down from generation to generation
	www.timeoutlet.com /info/infoview.asp?documentid=66 (246 words)

	A brief impression of Harry Winston Opus 3
		Vianney Halter was given full powers in creating this marvel and this, resulted in the conception of this highly unusual timepiece which is both true to the principles of fine horology and a totally new vision of presentation of time.
		The Opus 3 is both true to the principles of fine horology and a totally new vision of presentation of time.
		The Opus 3 is a masterpiece full of contradictions: a tribute to centuries old techniques and traditions and to the digital age and pop culture.
	www.tp178.com /ag/opus3/opus3v1.htm (1064 words)

	Herschede - Revere Clocks
		The first point is that the lubricants in electric clocks tend to evaporate because the clock is not sealed and because the electric motor generates heat.
		The second point is that the chimes may not stop if a load is applied to the gears (in other words, a chime hammer is being lifted) at the moment the chimes are expected to stop.
		Most repairmen resort to removing the mechanisms from electric clocks and inserting new plastic quartz mechanisms, which is a tragedy!
	www.abbeyclock.com /telechron.html (928 words)

	The Movement - Issue 17_5
		The mechanism of the striking work is among the most sophisticated ever.
		Originated by the need to read time in the dark, it was first invented in the 16th century, perfected by Breguet at the end of the 18th century then introduced in wristwatches in the first half of the 20th century.
		The mechanism can be turned on or off by means of a pusher or slide.
	www.invictawatch.com /TheMovement/Issue17_5 (689 words)

	Watch Reports:
		The second patent was received for a mechanism that combined the hour jump with the minute hand which instantly returned to the zero-position at the moment when the hour changed.
		For over ten years, Gerald Genta specialists have worked on improving the reliability of the mechanism with such a combination of complications, being the only watchmaking brand that may be rightfully proud of its legitimacy in developing of this type of mechanism.
		The Da Vinci from IWC is considered to be a legend among mechanical wristwatches with a perpetual calendar.
	www.watchreport.net (11193 words)

	Horology > Patents - Class: 968
		Mechanically actuated (cigar or cigarette receptacles or boxes with means for limiting the frequency of smoking a24f 15/00b) [g04f 3/02c]
		Driving mechanisms (driving mechanisms for turkish time subclass 167; driving mechanisms in the hands subclass 396; driving mechanisms for phonographic apparatus g11b 19/00; springs, driving weight engines f03g; driving mechanisms for cinematography g03b 1/00; driving mechanisms; driving mechanisms for time fuses for missiles f42c; driving mechanisms for toys a63h 11/23) [g04b 1/00]
		Of the mechanical oscillator or of the coil [g04c 3/10b2]
	www.patentgenius.com /class/968.html (4707 words)

	Nabataea.net: Ancient Time Piece
		The Antikythera mechanism is an ancient mechanical analog computer (as opposed to digital computer) designed to calculate astronomical positions.
		The mechanism itself was discovered on May 17, 1902, when archaeologist Valerios Stais[1] noticed that a piece of rock recovered from the site had a gear wheel embedded in it.
		mechanism itself was made in Greece.One hypothesis is that the device was constructed at an academy founded by the ancient Stoic philosopher Posidonios on the Greek island of Rhodes, which at the time was known as a centre of astronomy and mechanical engineering.
	nabataea.net /timepice.html (2136 words)

	This information and pictures are from the Lange Basel News 1999
		This intricate mechanism, controlled by a stepped pinion, was once used only in very expensive pocket watches and in very few top-flight wristwatch chronographs until the 1940s, but in recent decades it has been sacrificed to cost-consciousness.
		The flyback mechanism, used not only in aviation and sports, makes it possible during an ongoing time measurement to reset the chronograph hands to zero with a single push of a button and to restart them instantly by releasing the button.
		This feature saves time because the flyback mechanism simply skips the stop, reset and restart manipulations for which two buttons are normally needed.
	members.fortunecity.com /dannyny/datograph.html (1143 words)

	Tonneau Tourbillon-Style Automatic Wristwatch - Best of The Sharper Image (Site not responding. Last check: 2007-10-12)
		The elaborate workings of its fascinating mechanism can be seen through mineral crystal glass in front and on the back.
		Among the rarest and most desirable of watches are tourbillon ("whirlwind" in French) automatics, with a self-winding mechanism originally patented in 1801 — an intricate, complex dance of four balancing wheels.
		Its 30-jewel mechanism can be observed through the mineral glass crystal, front and back.
	www.sharperimagebest.com /wm950.html (496 words)

	Prestigious Timepieces
		I would not, for example, buy a Longines with an Ebauche mechanism unless the price were low enough.
		The "Rolex Oyster" case that houses the mechanism has a screw-down crown and its design overall offers superior protection to the mechanism, particularly against moisture.
		The Omega has a micrometric regulator, whereas the Rolex is free-sprung, which means that it has no regulator for adjusting the timekeeping.
	members.tripod.com /mvheadrick/watchesp.html (424 words)

	How do quartz watches work?
		A windup alarm clock, for example, uses a tension spring as a drive mechanism, an escapement wheel, and the gear driven mechanical hands moving across the clock face as a display of the time.
		Early mechanical clocks used falling weights as drive devices and a verge and foliot as an escapement device.
		Early mechanical watches and clocks used a pendulum or springs with some form of regulator to keep the frequency fixed.
	www.physlink.com /Education/AskExperts/ae559.cfm (671 words)

	Horology -The Index (Horological Science: Clepsydra)
		It uses a siphon to automatically empty the float tank, and there is some device on the feed tank that looks a bit like an inverted version of the feedback mechanism on the "Archimedes" clepsydra.
		These pages may be downloaded onto a hard disk or printed for your personal use provided that you include this copyright notice on each copy and that you make no alterations to any of the pages and do not use any of the pages in any other work or publication in whatever medium stored.
		No part of the "Horology-The Index" pages may be distributed or copied for any commercial purpose.
	www.horology.com /htt-clep.html (1114 words)

	Horology - PatentStorm (Site not responding. Last check: 2007-10-12)
		By mechanical means, e.g., pneumatic motor, etc. (winding up with electric or electromechanical means subclass 425; liquid or gas driving mechanisms subclass 21; automatic winding up by wind power subclass 62) [G04B 3/12]
		With constant impulses for the regulating mechanism (electrically driven pendulums with mechanical pulse transmission and constant pulse subclass 455; electrically driven pendulums with mechanical pulse transmission and constant pulse subclass 468) [G04B
		The date indicating mechanism is driven or disabled mechanically by a clockwork [G04B 19/24C7]
	www.patentstorm.us /class/968-Horology.html (4783 words)

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