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Topic: Barrel (horology)

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	Renaissance Watch Repair - Glossary of Terms: Watches, Watchmaking and Horology
		Barrel - Also called "mainspring barrel." Thin cylindrical "can" which holds the mainspring of a watch.
		The toothed rim of the barrel drives the train, usually through the center wheel.
		Horology - The science of time and timekeeping, including clocks and watches.
	www.pocketwatchrepair.com /glossary.html (2150 words)

	Horology
		The barrel is mounted on a mandrel and mounted on a wheel cutting jig.
		The barrel had so many nicks and dings I was only concerned with the area with the replace teeth.
		The barrel is not pretty but the repair is nearly invisible as it should be.
	www.lesgrenz.homestead.com /Horology.html (2615 words)

	WatchWear.com Glossary (Site not responding. Last check: 2007-10-04)
		BARREL Component of the movement containing the mainspring (s.), whose toothed rim meshes with the pinion of the first gear of the train (s.).
		Inside the barrel, the mainspring is wound around an arbor (s.) turned by the winding crown or, in the case of automatic movements, also by the gear powered by the rotor (s.).
		The scales mostly used in horology are related to the following measuring devices: tachometer (s.) (indicating the average speed), telemeter (s.) (indicating the distance of a simultaneously luminous and acoustic source, e.g.
	www.watchwear.com /glossary.php (7064 words)

	barrel (Site not responding. Last check: 2007-10-04)
		The barrel of a gun or other firearm is the tube, usually metal, through which a controlled explosion is released in order to propel a projectile out of the end at great speed.
		Barrels may be used only once for aging bourbon whiskey, so there is a worldwide trade in used bourbon barrels for aging other alcoholic products such as Scotch whisky and rum.
		Barrel is also often used to refer specificaly to the traditional American type of cask with a capacity of about 180 l.
	www.vocamania.com /barrel.aspx (1416 words)

	How does an Up/Down Indicator Watch Work?
		In going barrel watches the problem is much more complicated, and those cannot properly understand except the up-and-down mechanism with some scientific background.
		In a going barrel remains stationary during winding, which is performed by revolving the barrel arbor; this in its turn is held stationary by the clockwork during going.
		It would then be possible to revolve the wheel H, the wheel D and the pinion E freely around the stationary pinion C, but E is still in engagement with the wheel F which is mounted on the arbor of the up-and-down hand, and this wheel is not in engagement with any other.
	www.vintagezodiacs.com /Articles/ud.html (2430 words)

	Motor Barrel Question - Topic Powered by eve community (Site not responding. Last check: 2007-10-04)
		In the motor barrel (safety barrel) my understanding is that the arbor transmits the power to the train therefore if spring breaks the train is protected and surge of power will be felt in arbor and winding gears which can better handle it.
		On the other hand, when the mainspring breaks near barrel arbor (inner end), the entire length of the spring is free to develop a huge amount of momentum as it rapidly unwinds to fill the barrel.
		In watches equipped with a 'safety barrel,' the outside of the barrel is actually attached to the barrel arbor (via a square or 'D-shaped' hole in the barrel and a matching shoulder on the arbor).
	nawcc-mb.infopop.cc /6/ubb.x?a=tpc&s=2386079361&f=4316035461&m=2986027461 (1107 words)

	Mod for Elgin Mainspring Slipping - Topic from NAWCC Internet Horology Chapter 185
		The mainspring barrels on many older Elgin 6s and 16s mainspring barrels have only one slot for the mainspring "T" and it is located in the barrel cover, not the barrel itself.
		I believe the problem is not being able to hold the barrel and winder firm and steady due to the force needed to extract the spring.
		When a barrel hook is worn and rounded, as depicted in cross sectional view at figure "A" below, a graver or similar implement can be used to undercut the hook as shown in figure "B," thereby removing the small amount of material shown in red.
	nawcc-ihc-mb.infopop.cc /eve/ubb.x?a=tpc&s=3206049661&f=3426047761&m=2356013085&r=3846065085 (2001 words)

	Frequently Asked Questions - Glossary
		This is the most complex horology complication related to the calendar feature, as it indicates the date, day, month and leap year and does not need manual corrections until the year 2100 (when the leap year will be ignored).
		Generally defined as the number of cycles per time unit; in horology it is the number of oscillations of a balance every two seconds or of its vibrations per second.
		During a thunderstorm, the time that has elapsed between the flash of lightning and the sound of the thunder is registered on the chronograph scale.
	www.highqualitywatches.com /faq.htm (7140 words)

	Horological Terms (Site not responding. Last check: 2007-10-04)
		Barrel: Thin cylindrical box containing the mainspring of a watch.
		Horology: The science of time measurement, including the art of desiging and constructing the timepieces.
		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.
	www.employees.org /~bjunnila/Watches/Horological_terms.htm (4125 words)

	U.S. Pregrant 20050249045 - Spring-barrel arrangement for a timepiece (Site not responding. Last check: 2007-10-04)
		A barrel core is coaxially rotatably mounted relatice to the spring barrel and is enclosed by a helical tension spring.
		A crown wheel with a toothed ring is fixed to the spring barrel and a first wheel of a wheel train of the timepiece is fixed to the barrel core.
		The circular cutout is formed through the plate-like component and the spring barrel has two supporting regions which extend radially beyond the diameter of the circular cutout and are each in abutment against one of the mutually opposite side surfaces of the plate-like component.
	cxp.paterra.com /uspregrant20050249045.html (207 words)

	A Day in Watch School Part 4: The Changing of the Guard
		In the second year class the summer quarter was dominated by the slow building anxiety that culminated in their final examination that determined who would become a certified Watchmaker and who would have to brush up on their skills for another year and take the exam again.
		Removing a mainspring from the barrel is a risky procedure and one that will always result in at least a little distortion of the spring.
		Endshake is the amount of vertical movement the arbors are allowed between their two bearing surfaces and is generally proportional to the size of the pivot in question.
	www.tp178.com /jd/watch-school/4/article1.html (2739 words)

	The Union Glashütte Julius Bergter Small-seconds (Site not responding. Last check: 2007-10-04)
		The barrel drives the pinion of the first intermediate wheel, which directly engages with the second intermediate wheel, which in turn drives the third wheel pinion.
		This unconventional power train layout is apparently employed to ensure that the third wheel need not overlap the barrel (which would increase the thickness of the movement) while allowing the fourth wheel to occupy the center of the movement (which would facilitate a center seconds hand).
		The inside of the barrel is satin finished on top and bottom and the barrel arbor is of the smallish variety now favored by the industry to maximize mainspring potential given the greater elasticity of modern mainspring alloys[24].
	www.thepurists.com /watch/features/8ohms/unionbergterss/index.htm (3391 words)

	Barrel (horology) - Slider
		The barrel turns freely on an arbor and contains the mainspring, which is hooked to the barrel at its outer end and to the arbor at its inner end.
		The barrel meshes with the first pinion of the train of a watch; it rotates slowly, its arc of rotation varying between one ninth and one sixth of a revolution per hour.
		without teeth, used in fusee watches; the chain, or catgut, was coiled round the plain barrel, connecting it to the fusee.
	enc.slider.com /Enc/Barrel_(horology) (123 words)

	Watch and clock magazine - Some thoughts on fluids used in horology
		It is an impressive quantity of washes but it is only from a couple of years that the two barrels began to crack, after about 500 cleanings, ultrasonic treatments and rinsing.
		Watch movements show no sign of damage on plates; brass wheels, not gilded, appear to be quite porous, like alarm clock barrels, but not cracked (possibly because wire erosion did not stress brass as traditional cutters did with alarm clock barrels, but this point should be further investigated).
		Theoretically, a fraction of the damage shown by our barrels is caused to every clock washed in ammoniated fluids, but we believe it is so small it can really be neglected.
	www.orologeria.com /english/magazine/magazine7.htm (1129 words)

	The Critical Times
		Most of the bottles Welder sold were not on display in the store but were ordered directly by the case and waited in the store room for their future owners.
		Welder would also store several barrels there of either Port or other wine that was normally kept in barrels and not in bottles.
		Having delivered their barrels the gang of urchins appeared out of the store and before I could grab one of them to ask what they had been up to they ran off.
	www.thecriticaltimes.net /2006/01/barrel_of_laughs.htm (822 words)

	Ébauche - Wikipedia, the free encyclopedia
		In horology the term refers to an incomplete watch movement.
		Until about 1850, the watch-maker's ébauche consisted only of the bottom plate, bars, fusee, and barrel.
		In the early nineteenth Century, the ébauche was made up of two plates with pillars and bars, the barrel, fusee, index, click and ratchet-wheel, and a few assembling screws.
	en.wikipedia.org /wiki/Assortment (286 words)

	Oris - The Glossary (Site not responding. Last check: 2007-10-04)
		The barrel contains the wound-up mainspring, hooked to it at its outer end and which stores the energy, assuring a power reserve of 36 to 45 hours to the watch.
		The mainspring is wound up manually by means of the crown (handwinding watch) or through the movement of the oscillating weight (Rotor) in an automatic watch.
		The system of wheels and pinions which, from the barrel B, transmits the driving power to the escape wheel E, Z1 centre-wheel, Z3 third wheel, Z5 fourth wheel.
	www.oris.ch /english/info/lexicon/glossary.html (610 words)

	Print Materials Database \| Search Results
		Third and expanded edition by two recognized authorities of early to mid 20th century Horology.
		Subjects such as "skillful filing, lathe-work, barrel and mainspring, balance springs, magnetism, cleaning and oiling' and more are covered clearly and in-depth.
		Five hundred pages of wrist watch parts, many exploded views of movements, all with their corresponding Quick-fit number, which can be cross-referenced with other parts numbers.
	www.oldwristwatches.com /sundry/books (184 words)

	Horology - PatentStorm (Site not responding. Last check: 2007-10-04)
		Barrels; arbors; barrel axles (arrangements facilitating the removal of the mainspring subclass 291) [G04B 1/16]
		Constructions for connecting the ends of the mainsprings with the barrel or the arbor (mainsprings and bridles therefor subclass 10; clamping the hairspring on the regulator subclass 121; clamping the hairspring on the arbor subclass 135) [G04B 1/18]
		Protecting means preventing overwinding (arranged in, or attached to, the barrel subclass 16; in connection with keys or the like subclass 36; in connection with parts of the cases subclass 38; support of the moving weight subclass 53; protection means s
	www.patentstorm.us /class/968-Horology.html (4916 words)

	The Horology Source - Calculate an Estimated Mainspring
		If the mainspring is missing or if the existing mainspring is a suspect replacement, use this calculator to determine the correct sizing.
		is the number of teeth on the barrel wheel
		is the outside diameter of the barrel arbor
	www.horologysource.com /CalcMainspringEstSize.htm (136 words)

	Fusee - Wikipedia, the free encyclopedia
		A fusee is a cone-shaped, grooved pulley used together with a barrel that contains a mainspring.
		The verge watch with fusee was used for the first 250 years of watch and clock manufacture.
		As a result, during the 18th century, France continued to pursue thinner and smaller watches, and England continued to use and refine their large and robust full-plate movements with fusees.
	en.wikipedia.org /wiki/Fusee (204 words)

	The Jaeger Le Coultre Master Ultra Thin - TimeZone
		But because the barrel pivots carry more load than any other wheel in the train, such floating arrangements often lead to pivot problems, tilting of the barrel, and poor power transmission to the center wheel.
		The arbor mounts the barrel in the barrel bridge between the barrel and ratchet wheel (which normally rides directly on top of the barrel).
		The transmission wheel transmits winding to the mainspring barrel from crown, stem, castle gear, and winding pinion (or crown gear).
	www.timezone.com /library/horologium/horologium0028 (2369 words)

	Pocket Watch - Pieces of Time - Full text of Catalogue 50 - Antique and Precision Pocket Watches (Site not responding. Last check: 2007-10-04)
		Fusee and chain with worm and wheel barrel setup between the plates, large pierced foot for the fusee stop lever.
		Gilt movement with two resting barrels, the larger barrel, being half the diameter of the movement, providing the power for the musical train.
		Fusee with blue steel barrel setup ratchet on the plate with a large elaborately pierced and engraved gilt click.
	www.antique-watch.com /txt/cat_50.html (8443 words)

	The Most Exclusive Automatic: The Vacheron Caliber 1120 - TimeZone
		Transfer from the top of the barrel bridge to the underside is handled by a semi-floating double gear suspended on a large diameter center jewel and lower pivot jewel (3).
		Because it has now been in production for a third of a century, it is also available in a variety of relatively "vintage" watches, many of which can be obtained at a small fraction of the cost of anything comparable in a new watch.
		Be forewarned, however, about the issue of barrel bridge wear, and have a knowledgeable watchmaker, familiar with this movement, look at a watch before purchasing it.
	www.timezone.com /library/horologium/horologium631686780396906210 (1167 words)

	The Watch Guys Glossary of Horology Watch Terms
		Balance Wheel: The part of a mechanical watch movement that oscillates, dividing time into equal segments: much like that of the pendulum in a clock.
		Tonneau Watch: A watch shaped like a barrel, with two convex sides.
		Tourbillon: A device in a mechanical watch where the escapement is mounted on a platform which rotates. This eliminates positional timekeeping errors.
	www.thewatchguy.homestead.com /pages/GLOSSARY.html (1758 words)

	The Horology Source
		The Horology Source is your gateway to all aspects of clocks, watches, timekeeping, and the science of horology.
		Horology is the science of measuring time and the art of making timepieces.
		The Horology Source is constantly being updated and is ALWAYS in-process.
	www.horologysource.com /Default.asp (350 words)

	The Science Behind a Clock (Site not responding. Last check: 2007-10-04)
		Note that these two parameters are in opposition to each other-- in order to increase the run time we need to increase the gear ratio, but the more we increase the gear ratio, the less power the train will provide for timekeeping.
		The barrel is attached to the gear with a ratchet, allowing it to be turned backwards for rewinding.
		In weight driven clocks, the weight chain will either be wrapped around a barrel similar to the one used by the spring-driven clock, or run over a star gear that engages the links in the chain.
	www.brendlers.net /clock/science.htm (4310 words)

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