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Topic: Quartz clock


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In the News (Thu 20 Jun 19)

  
  The Antique Sextant - Stanley London Boxed Quartz Clock
Note that it is not possible to mount a plaque on the inside lid because of the exposed clock movement.
The face of the clock is protected with glass, and the quartz clock is powered by a single pen-light AA battery.
The clock bezel measures 3 1/2 inches (9 cm) in diameter and the clock face measures 2 5/8 inches (6.7 cm) in diameter.
www.antiquesextant.com /clockboxedmahog.htm   (598 words)

  
 Beautiful Piano-Finished Desk Clock with Magnetic Compass in a Rich Solid Mahogany Case.
The clock features a highly accurate battery operated Japanese quartz movement (battery included), and a fully functional magnetic compass is inset into the mahogany base.
The clock compass is 2 7/8 inches (7.3 cm) tall with the lid closed, 3 1/2 inches (8.6 cm) square, and weighs a solid 14.5 ounces (410 grams).
The front of the clock's base can be fitted with a custom engraved brass plaque with up to 30 words of text.
www.brasscompass.com /clockcomppiano.htm   (655 words)

  
  The Quartz Wall Clock
I had a quartz clock that failed to work properly, so I took the opportunity to disassemble the clock and see how it worked.
The timekeeping of the quartz clock is not affected at all by friction.
The second hand is driven by the clock motor alone, connected to the motor by a gear train with a 30:1 reduction.
mysite.du.edu /~jcalvert/tech/quartz.htm   (1097 words)

  
  Untitled Document
The initial quartz clock was invented in 1927 by Warren A. Marrison and J.W Horton.
Before quartz clocks, a second had been defined as 1/86,400 of an average solar day (the average amount of time it took for one rotation of the Earth).
Nowadays, quartz clocks have advanced so much that they are found in all types of things such as calculators and computers.
www.elytradesign.com /ari/html/quartzclock.htm   (240 words)

  
  Quartz clock
A quartz clock is an electronic oscillator that uses a quartz filter to achieve very precise frequencies.
In modern quartz clocks, the resonator is a tuning fork shape, laser-trimmed or precision lapped to vibrate at 32,768 cycles per second.
If a quartz wristwatch is "rated" by measuring it against an atomic clock's time broadcast, and worn on one's body to keep its temperature constant, the corrected time can easily be as accurate as 2 seconds per month, more than good enough to perform celestial navigation.
www.ebroadcast.com.au /lookup/encyclopedia/qu/Quartz_clock.html   (590 words)

  
 The Quartz Wall Clock
The clock is made mostly of plastic, showing the great utility of this material for making inexpensively pieces of complex shapes and functions.
The timekeeping of the quartz clock is not affected at all by friction.
The second hand is driven by the clock motor alone, connected to the motor by a gear train with a 30:1 reduction.
www.du.edu /~jcalvert/tech/quartz.htm   (1097 words)

  
 Electric clock movement, particularly a quartz clock movement - Patent 4508458
In an electric clock movement, the electronic components, such as an IC chip (9), a quartz crystal (10) or a diode (12), instead of being fastened to a circuit board are fastened to an extension (8) on the back plate (2).
The present invention refers to an electric clock movement, particularly a quartz clock movement, having a gear train which is driven by an electric motor and arranged between two plates, at least one of which consists of plastic, as well as an electric circuit containing electronic components for the time-dependent driving of the motor.
Clock movements of this type are already known in which the electronic components such as a quartz crystal, a binary divider, capacitors, resistors, diodes and transistors which together form the drive circuit for the motor are arranged on a circuit board.
www.freepatentsonline.com /4508458.html   (1429 words)

  
 Mechanism of the Quartz Clock
Fused quartz is often used for laboratory equipment that must not change shape as the temperature changes.
These clocks usually have special instructions for changing the battery (the counter must not be permitted to stop), and become more accurate as they grow older.
Quartz chronometers designed as time standards often include a crystal oven, to keep the crystal at a constant temperature.
www.edinformatics.com /inventions_inventors/quartz_clock.htm   (700 words)

  
 THE BELL SYSTEM
Quartz crystal is the most abundant crystalline form of silicon dioxide, occurring, in some parts of the world, in large single crystals from which mechanical resonators of useful dimensions can readily be formed.
The improvements in quartz resonators, and in their driving circuits, have resulted in the construction of quartz crystal clocks that will keep time with an accuracy better than 0.001 second a day, so that measurements of time of great interest and value to astronomers and geophysicists can now be made with an accuracy hitherto unattainable.
The quartz resonators used in these installations are believed to be similar to those in Clocks III and IV in the Physikalisch-Technische Reichsanstalt installation except that some of them were made for 100 kilocycles instead of the original 60 kilocycles.
www.ieee-uffc.org /freqcontrol/marrison/Marrison.html   (17534 words)

  
 Infinity Instruments
For longer life in hard to reach places or where the clock is used in unusually cold/warm environments, battery life can be extended by using a lithium battery.
The clock has had a loss of power or has just been started up and is searching for a signal.
This is normal, and the clock will set itself to the correct time after it receives a signal.
www.infinityinstruments.com /techsupport.html   (749 words)

  
 Automotive Clock Update - Quartz for your Car Clock
The early self-winding clocks have two points, similar to ignition points, that get closer and closer as the clock ticks.
The new clock is considerably lighter than the factory unit but it is identical to the original.
The new clock has two plastic gears that need to be installed with the old metal ones.
www.automedia.com /Clock/Update/res20000718tm/1   (897 words)

  
 - Clockparts.com
The size that you use is determined by the size of the clock dial or fare that you use.
If you decide to use a quartz movement with separate hands and dial, it is much easier to create a design that is truly unique.
While it may be possible to use one of our movements to repair your clock, we have no way of telling because we can not reference the brand and model number of your clock to determine what you may need.
cart.clockparts.com /faq.php   (1187 words)

  
 quartz clock definition - Dictionary - MSN Encarta
quartz clock definition - Dictionary - MSN Encarta
Search for "quartz clock" in all of MSN Encarta
clock with quartz crystal: a clock in which the time-keeping mechanism is accurately controlled by a quartz crystal that vibrates at a fixed frequency in an oscillating electric circuit
encarta.msn.com /dictionary_1861697915/quartz_clock.html   (93 words)

  
 Quartz clock - Wikipedia, the free encyclopedia
A quartz clock is a clock that uses an electronic oscillator which is made up by a quartz crystal to keep precise time.
Since the introduction of the low current consumption microprocessor in the late 1970's, clocks and watches now contain a small, special-purpose computer with a program that counts the cycles, and translates them into an electrical form to drive the visible display.
One practical issue for the mass-production of quartz oscillators was how to adjust their frequency without requiring a human operator to fine-tune them.
en.wikipedia.org /wiki/Quartz_clock   (905 words)

  
 Mars Clock   (Site not responding. Last check: )
We have created a quartz clock with a timebase adjusted to conform to mean Mars time.
Once you have set the clock to the local Mars time at one of the Mars Rover locations, you can tell at a glance what time of Martian day it is for the rovers.
The clock is hand-tuned to run within one or two parts per million of the mean Martian rate.
www.bmumford.com /clocks/martian   (287 words)

  
 Quartz Cuckoo Clocks from the Black Forest of Germany.
Quartz Cuckoo Clocks from the Black Forest of Germany.
The following Cuckoo Clocks use a quartz clock mechanism which means it is battery powered.
Quartz (battery powered) Cuckoo Clock with Stag head, oak leaves, and live animals.
www.euro-clocks.com /store.asp?C=51   (180 words)

  
 The Wall Clock Depot:Wall Clock, Howard Miller Wall Clocks, Wooden Chiming Wall Clocks, Seth Thomas Wall Clocks
Quartz battery controlled German Chiming movement with dual chimes with both Westminster and Bim Bam (ding / dong) 4/4 quarter hour chimes and swinging polished brass pendulum.
This Quartz clock was inspired by the famous Seth Thomas #2 Railway Clock and features a round white dial with Roman numerals and a separate dial for the second hand sweep with a deep Cherry finish.
Quartz, dual chime movement plays Westminster or Ave Maria chimes and features volume control, chime off and automatic nighttime chime shut-off option (between 10:00pm and 7:15am).
www.theclockdepot.com /wall_clocks_traditional_quartz.html   (3206 words)

  
 Quartz Mantle Clocks Pendulum Clocks Carriage & Wall Clocks
Clocks in brass, fl oak and soft wood finishes with pendulum.
All clocks and other products are guaranteed for 1 year from the purchase date against faulty components and workmanship.
If the clock or other item becomes faulty due to faulty parts or workmanship during this period you must inform us within 7 working days of the fault occurring and we will repair or replace the goods with the same or similar (if the item is no longer produced) free of charge.
www.boxsat.com /quartz-clocks   (322 words)

  
 Clock movements parts hands Kits Craft supplies Quality clock movement and art materials
We carry a full range of the Seiko quartz clock movement, Seiko quartz pendulum clock movement and clock inserts.
These clock movements come complete with a washer, hanger and nuts and in four sizes (the Spindle diam is 8mm) the case is 56mm x 56mm (depth 15mm) and comes in 4 spindle length. Accuracy 0.45+/-0.55 sec/day
Each Everglades Standard Combo consists of a Seiko quartz movement with hook and nuts, hour, minute & second hands and a set of plastic numerals of your choice. Please note the movements can be supplied in four different spindle lengths (12mm,16mm,21mm & 26.5mm).
www.craftmaterialsupplies.co.uk   (671 words)

  
 quartz clock movements
It will do this once on the half hour and also strike out whatever time it is on the hour.
This Westminster chime movement is the only one on the market today that features both a chime synchronization knob and full "grandfather clock" style Westminster chime.
Please remember to mount the speaker firmly into the case and make sure that the case is "vented" so that the sound will be able to escape.
www.clockworks.com /quartz2.html   (548 words)

  
 Stanley London Boxed Quartz Clock in Mahogany Case
With precise clocks, the ship's longitude could also be determined, however an error of only one second of time is equal to a 1/4 nautical mile error at the equator.
The clock features a highly-accurate quartz movement and is housed in a handsome satin finish mahogany wood case.
The face of the clock is protected with glass, and the quartz clock is powered by a single standard pen-light AA battery.
www.stanleylondon.com /clockboxedmahog.htm   (643 words)

  
 ECS - Quartz Wall Clock
This wall clock from the mid 1970s is an early quartz clock, dated 1977, with a 'digital' display formed from flip-over numerals.
Three 'C' sized batteries (LR14) power the clock, and are mounted in battery holders at the left hand end of the movement.
This movement could also be supplied to operate from a master clock by removing the quartz circuit board, and connecting the coil to the master clock's distribution circuit.
www.englishclocksystems.co.uk /quartzwall.html   (168 words)

  
 1 7/16" mini quartz clock fit-ups.
Silcon brand miniature quartz clock fit-ups are the industry standard.
These new economy miniature quartz clock fit-ups were designed to offer a lower priced alternative to our standard line.
In spite of the lower price, they are still manufactured by Silcon, the world's leading manufacturer of miniature quartz clock fit-ups.
www.nicks.ca /710fit.html   (503 words)

  
 "Quartz Clock" - Shopping.com   (Site not responding. Last check: )
This clever combination of clock and curio unites the hallmarks of traditional Queen Anne style with updated versatility for the modern home.
Highly accessible alarm on/off pushbutton on top of clock Quartz movement is accurate to within a...
Clock accent table has quartz movement and takes one AA battery (not included).
www.shopping.com /xGS-Quartz_Clock   (698 words)

  
 Become.com - Shop results for aluminum quartz clock
This attractive blonde-wood Quartz Clock from Edwood is made of solid maple and high-quality aluminum, imported from France.
Distorted Wall Clock is made in the surrealistic tradition of Salvador Dali's famous melting watches.
Attractive quartz clock in a corrosion-resistant brushed aluminum case with an ocean blue dial face.
www.become.com /shop?q=aluminum+quartz+clock   (219 words)

  
 Quartz Clock Movements
People who are replacing a bad clock movement do not need hands because they use the hands from there old movement, but if you are building clocks please Select Hands Here.
These movements have a second hand that moves in a smooth continuous motion, rather then the stepping motion of most quartz movements.
This change not only affects the appearance of the clocks you make, but continuous sweep movements also have the added benefit of being quieter.
www.clockworks.com /quartz.html   (468 words)

  
 Clocks, Watches: Hermle quartz clock 2214
Since it is quartz, can it be repair or do i have to replace the whole quartz movement?
The batteries are new and i don't think there is a switch to turn it on.
Since your clock was obviously functioned before, the first thing I would suspect is the battery.
en.allexperts.com /q/Clocks-Watches-1747/Hermle-quartz-clock-2214.htm   (245 words)

  
 Quartz Cuckoo Clock
Quartz Cuckoo Clocks are operated by batteries, so you don't need to pull up the weights every day or every 8 days.
All our cuckoo clocks are made individually, so each clock will be slightly different from the pictures.
Weights and pendulums are sometimes not shown in pictures but are included with all clocks.
www.topclock.com /store/Quartz.htm   (101 words)

  
 Quartz Wall Clock Promotional Item
Home » Clocks » Personalized Wall Clocks » Quartz Wall Clock
High quality quartz movement with sweep second hand, available in red only(second hand).
Clock hands available in fl or white, please specify.
www.garrettspecialties.com /quartz-wall-clock-p-3436.html   (244 words)

  
 VALENCIA, Chiming Quartz Wall Clock at The CLOCK Site   (Site not responding. Last check: )
A clock of American origin, the "banjo" was first crafted in 1802.
Quartz, dual chime movement plays your choice of Westminster of Ave Maria chimes, and features volume control and automatic nighttime shut-off.
Finished in Windsor Cherry on select hardwoods and veneers, this wall clock features rare olive ash burl on the pediment.
www.theclocksite.com /wallclocks/620-236.html   (249 words)

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