Checking for Proper Drop/Lock in the Swiss Lever Escapement
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Horologicaltm TIMES February 2003
HoROLOGICALTM TIMES February 2003 American Watchmakers-Clockmakers Institute ~ DOUBLE FLANGE Plastic Envelope MASTER ASSORTMEN't~"""""'==... Holder '*Esfuger &CO ;;;;;;;;;;;;;;;;;;;;;;?~t;;OI~;IJI~ DoubleMaster Flange ~~ Assortment ~::; #82.2006 This new envelope • 36 different sizes holder keeps your repair and • Includes 1.3, 1.5, 1.8 dia. storage envelopes organized and ready for quick retrieval and identification. Made of clear acrylic with Combines a full range of sizes, three dividers to hold envelopes in order. Measures 6mm to 24mm, in three thickness- 105/s" X 33/s" X 3'h". 0 1.30mm, 1.50mm, 1.80mm. In a hinged plastic box. Refills available. (Reg. Price $65.00) PLAIN Job Envelopes Heavy Duty • Helps Protect Jobs' SHORT-END 3-1/8" X 5-1/2" Buckle Spring Bars Very handy to have and can be rubber stamped with your name & address. Identifies your work when you send ~ Es<;l lJ ~r &Co. sample orders to your supplier SHORT-END BuCKlE SPRING BAR and helps prevent misdirected orders. All have gummed flaps. ASSORTMENT 0 82.100 Brown #61.114 • White #61.116 SJ35o SJJOOO s24oo Box of 500 Lots of 5000 2 Boxes (1 000) • Contains 100 pieces • 10 different sizes (Reg. Price $22.50) A very popular selection of spring bars Watch & designed to fit foldover buckles on Seiko, Citizen and others. The BESTFIT Supplied in a handy, ten bottle assortment box. Jewelry Repair Watch and Jewelry Repair Record Book Record Book SUPER-THIN Stainless Steel * Complete Information: • Name & address of owner • Tag & record number Spring Bar Assorbnent • Dates: received -repaired- delivered ·-:~~~~~11 450 Pieces- ONLY 1.2JDJD THICK! • Received by- Delivered to • Complete description: Case- Case#, Movement# -Markings • Repairs made -Charges - Special information '* E.'i'ilir~'t'r & c:c .>. -
Floating and Platform Balances an Introduction
Floating and Platform Balances An introduction ©Darrah Artzner 3/2018 Floating and Platform Balances • Introduce main types • Discuss each in some detail including part identification and function • Testing and Inspecting • Cleaning tips • Lubrication • Performing repairs Balance Assembly Type Floating Platform Floating Balance Frame Spring stud Helicoid spring Hollow Tube Mounting Post Regulator Balance wheel Floating Balance cont. Jewel Roller Pin Paired weight Hollow Tube Safety Roller Pivot Wire Floating Balance cont. Example Retaining Hermle screws Safety Roller Note: moving fork Jewel cover Floating Balance cont. Inspecting and Testing (Balance assembly is removed from movement) • Inspect pivot (suspension) wire for distortion, corrosion, breakage. • Balance should appear to float between frame. Top and bottom distance. • Balance spring should be proportional and not distorted in any way. • Inspect jewels for cracks and or breakage. • Roller pin should be centered when viewed from front. (beat) • Rotate balance wheel three quarters of a turn (270°) and release. It should rotate smoothly with no distortion and should oscillate for several (3) minutes. Otherwise it needs attention. Floating Balance cont. Cleaning • Make sure the main spring has been let down before working on movement. • Use non-aqueous watch cleaner and/or rinse. • Agitate in cleaner/rinse by hand or briefly in ultrasonic. • Rinse twice and final in naphtha, Coleman fuel (or similar) or alcohol. • Allow to dry. (heat can be used with caution – ask me how I would do it.) Lubrication • There are two opinions. To lube or not to lube. • Place a vary small amount of watch oil on to the upper and lower jewel where the pivot wire passed through the jewel holes. -
China Overtakes, Omega Closes in on Rolex and Other Key Findings
! !"""" "" 138 WORLDWATCHWEB europa star.com WorldWatchReport 2012: China overtakes, Omega closes in on Rolex and other key findings "Tamar Koifman & Faaria Baig, Digital Luxury Group Background Brazil, often described as a fast-emerging luxury market, remained Since 2004, the WorldWatchReport™, published by the Digital stagnant this past year, neither gaining nor losing market share in Luxury Group in partnership with Europa Star, has provided the comparison to other luxury watch markets. industry with an exclusive analysis of the interests and prefer- ences of luxury watch consumers around the world. Based on a Demand strong in China methodology utilising Digital Luxury Group’s proprietary technol- Coming of no surprise to those working for luxury watch brands ogy, the report identifies and analyses over 1 billion watch-related is the continued strength of China in driving overall watch searches and translates them into client intentions related to demand. Composed of three major regions and 56 ethnic groups, brands, models, distribution, replicas, price, and accessories. China’s diversity requires an in-depth understanding of local cul- ture and clientele preferences, and this is no different when The study tracks 40 of the most renowned luxury watch brands in analysing the interest for luxury watches. the top 20 markets across the globe: Coastal China, represented by major cities such as Beijing, Shanghai, A.Lange & Söhne, Audemars Piguet, Baume & Mercier, Blancpain, Hangzhou, and Dalian, represented 57 per cent of the nation’s Breguet, Breitling, Bulgari, Cartier, Chanel, Chopard, Dior Watches, demand for luxury timepieces, highlighting that the luxury mar- Ebel, Roger Dubuis, Jaquet Droz, Harry Winston, Hermès, Richard kets in central China are still to be developed, a potential oppor- Mille, Franck Muller, Frédérique Constant, Girard Perregaux, Hublot, tunity for brands. -
Evolution of Clock Escapement Mechanisms
Miodrag Stoimenov Associate Professor Evolution of Clock Escapement University of Belgrade Faculty of Mechanical Engineering Mechanisms Branislav Popkonstantinović Associate Professor The paper presents and explains the evolution of details design of the clock University of Belgrade escapement mechanisms through the ages. As particularly significant, the Faculty of Mechanical Engineering following mechanisms are emphasized: the crown wheel (verge & foliot), Ljubomir Miladinović anchor recoil, deadbeat and detached escapements, and their variations – Associate Professor gravity and chronometer escapements, as well as the English and Swiss University of Belgrade lever watch escapements. All important geometrical, kinematical and Faculty of Mechanical Engineering dynamical properties and the influence of these properties on the clock Dragan Petrović accuracy are explained. Associate Professor University of Belgrade Keywords: clock, escapement, evolution, mechanism, lever. Faculty of Mechanical Engineering 1. INTRODUCTION oscillator with the restoring force and standardized pace. The crown wheel rate, acted upon by driving torque, is This work is aimed at a qualitative analysis of regulated only by the foliot inertia with a rather advancement in escapement mechanism structural unpredictable error. When the crown wheel is rotating, definition and development of a timepiece over the past the pallet of the verge is caught by one of the wheel’s seven centuries. This study cowers the following issues teeth, rotating the verge and a solid foliot in one a) the crown wheel, the verge and foliot, b) the recoil direction and leading to engagement of the opposite anchor escapement, c) deadbeat escapements, and d) tooth with the second pallet [4]. Due to the foliot inertia, detached escapements. Measure of the effectiveness in that next tooth stops the wheel’s motion, and the wheel the regulator horological properties could be specified with its eigen driving torque finally stops the rotation of as follows: a) the level of constructive and dynamic the foliot too. -
History of Escapement Mechanisms
Journal of Mechatronics, Automation and Identification Technology Vol. 3, No.2. pp. 8-12 History of Escapement Mechanisms Miša Stojićević, Branislav Popkonstantinović, Ljubomir Miladinović, Ivana Cvetković Faculty of Mechanical Engineering, Belgrade, Serbia Faculty of Mechanical Engineering, Belgrade, Serbia Faculty of Mechanical Engineering, Belgrade, Serbia Innovation Centre of the Mechanical Faculty Belgrade, Serbia [email protected], [email protected], [email protected], [email protected] Abstract—This paper describes a history of development one of the most important part of mechanical clock – escapement mechanism. Escapement mechanism is a device designed to maintain a constant average speed of the escape wheel, by allowing it to rotate to the desired angle at certain impulse of time. While doing that it simultaneously support the oscillations of the pendulum or balance spring, by compensating for friction losses and air resistance. 7 century long history of escapement mechanisms, from 13th century verge mechanism up to modern-day escapements that can be found in luxury watches, will be shortly presented. Through lives of famous clockmakers and their achievements in field of making escapement mechanism will be given a new insight in science of time keeping - horology. Keywords— escapement, mechanism, history, watches, clock I. INTRODUCTION Fig. 1 Verge escapement The escapement mechanism is a key part of every However, the late middle Ages also recorded the mechanical clock, because it maintains and counts appearance of hand and pocket watchmakers. The first oscillations of the oscillator and thus measures the flow portable timer, the so-called. The Nuremberg egg (Fig. 2), of time. It can be also said that escapement is a device which could be worn in a pocket or purse (Ger.: that transfers energy to the timekeeping element (the taschenuhr), was constructed in Nuremberg by "impulse action") and allows the number of its watchmaker Peter Henlein, (1485-1542) oscillations to be counted (the "locking action"). -
A Practical and Theoretical Treatise on the Detached Lever Escapement For
http://stores.ebay.com/information4all mmmfm www.amazon.com/shops/information4allwww.amazon.com/shops/information4all http://stores.ebay.com/information4allhttp://stores.ebay.com/information4all OTTO YOUNG & CO., 149 & 151 State Street, Chicago, 111. ("WHOLESALE ONLY.l ^IISEC LIBRARY OF CONGRESS. 1 V Shelf .-.^33 UNITED STATES OF AMERICA. ®ool$ mm m^aunms A complete stock of above always on hand. Also a full line Elgin, Waltham, Howard, Hampden (Mass.) and Springfield (111.) Watch Movf ments. Deuber and Blauer Gold and Silver Cases, Keystone and Fahy's Silver Cases, Boss' Filled Cases, Rogers & Sro. Fiat Ware and Meriden Silver Plate Co.'s Hollow Ware. Solid Gold and Ro9ied Plate Jewelry m large variety. Gold and Silver Head Canes, Gold and Silver Thimbles, Pens, Pencils, Toothpicks, Etc. In fact, everything required by the jewelry trade. We guarantee quality exactly as represented ; have no leaders, but sell everything at uniform low prices. Send us your orders and they will be filled same day as received. Eespectfully, www.amazon.com/shops/information4allwww.amazon.com/shops/information4all ^pa 23 m^ http://stores.ebay.com/information4allhttp://stores.ebay.com/information4all Technical Works for Watchmakers and Jewelers. Prize Essay on the Detai lied Lever Escapemeut. By M. Grossinaiiu. Illiisti-ated. Our owu Premium edition. laper cover, ... - - S2. UU The same, bound in t^loth. ------- 2.50 Now in preparation and to Lo [lublished abtjut June 1st, 188-1: Instructions in Letter EnaTaving; the Ait Simplified and Made Easv of Acquirement. By Kennedy Gray. Illustrated. Paper cover, - - - - !|>_.uo The same, bound in cloth, ------- 2.50 will to regular subscribers of The Watch- A discount of 50 per cent, o i either of the above publications be made maker AND Metalworker. -
It Could Prove Your Wisest Investment. It Takes a Long Time to Build a Maker's High Standards
It could prove your wisest investment. It takes a long time to build a maker's high standards. A lineup to With SEIKO Battery, that's reputation for dependable, quality grow with. something you can always count on. products and service. The top SEIKO Battery power cells work reliability ofSEIKO's long-life watch in virtually every brand watch just as batteries will reassure you and your well as they work in a SEIKO. So customers it was time well spent. while not every watch can be a There are dozens of different SEIKO, its battery can. SEIKO quality watch batteries in the SEIKO Make sure every moment of your BATTERY Battery lineup. All designed and time and your customers' time is produced to the leading watch- well-spent. Grow with the Leader VOLUME 11, NUMBER 8 AUGUST 1987 HOROLOGICAL Official Publication of the American Watchmakers Institute WILLIAM BIEDERMAN PRESIDENT'S MESSAGE 12 4 Recap on AW/ Board Meeting HENRY B. FRIED QUESTIONS AND ANSWERS 8 A Pendulum's Elliptical Motion JOE CROOKS BENCH TIPS 12 Locking the Lock Wheel AWi Annual ARCHIE B. PERKINS TECHNICALLY WATCHES 14 Antique Watch Restoration, Part XX Meeting FRED S. BURCKHARDT ROCK QUARRY 18 A Day in the Life . 24 STEVEN G. CONOVER CHIME AND STRIKE 20 Gilbert Strike TIMOTHY R. WHITE CLOCKS INSIDE AND OUT 28 A Practical Guide to the Brocot Escapement Brocot MARSHALL F. RICHMOND PICKLE BARREL 32 Basic Jewelry Repair (Lesson 11) Setting Up a Basic Jewelry Shop Escapement JAMES ADAMS NOVICE WATCHMAKER 35 Mainsprings and Motor Barrels Guide WES DOOR SHOPTALK 36 Pricing Quartz Repairs 28 THOMAS H. -
Estimating Pocket Watches
For the Latest in Watchmaker's Tools & Parts .Jitn·el visit @www.JulesBorel.com, click on products .JI•••·el New Bergeon Organizer e Heavy duty organizer holds five new BG7013 dip oilers and five of your BERGEON favorite screwdrivers and allows them to be individually positioned as you like. In the center is a large block of new dustless synthetic material for oiler cleaning and 5 oil cups with lids and polished wells. Includes the five new oilers (1 each of 5 sizes) and 5 screwdrivers (sizes of your choice). Made of metal and weighs a hefty 6 pounds, base measures 9 x 4 inches. Swiss made. BG7011 New Oiler-Screwdriver Organizer $ 539.- New Bergeon Precise Oilers These new dip oilers have been in development for over a year with a leading €1 BERGEON watch company. Special machined stainless steel tips are designed to hold a consistent quantity of oil and allow for a precise deposit. Handles are color coded, anti-slip and anti-static. Set includes one each of .18, .24, .32, .45mm tip sizes. Swiss made. BG7013-4 Set of 4 new Precise Oilers $ 99.- Greiner-Vibrograf MagnoTest Magnetism Sensor A new piece of equipment that identifies magnetism in you customer's watch. Many of today's electronics can magnetize watches, and that magnetism can affect their timekeeping ability. Your customer will be able to see the red LED lights that indicate the degree of magnetism and will appreciate your demagnet izing service. Made in Switzerland. TS-Magnotest2 Greiner Magnetism Sensor $ 575.- Practical Watch Repairing Book A thorough book on mechanical watch repairing, valuable to the beginner as well as the expert. -
Modern Books on Horology 3
, HABrAHC U. S. DEPARTMENT OF COMMERCE Letter 2.3 national bureau of standards Circular WASHINGTON 25, D. C. LC981 April 1, 1950 ( Supersedes LC766) 1.. 2. MODERN BOOKS ON HOROLOGY 3. Contents General Information Historical and Descriptive Books Technical Books 4 Government Publications 1. General Information The purpose of this letter circular is to present a list of books which will be found valuable for the use of watchmakers, collectors, and others interested in timepieces and in their performance and repair. No attempt has been made to include books earlier. than 1900 or to list books in other than the English language, or numerous articles published in trade journals and horological magazines. Some of the books listed are obtainable from dealers; some, now unobtainable, can be found in public libraries. Price lists of books now on the market may be obtained from the watchmakers' supply dealers or from the following: The American Horologist, 226 Sixteenth St., Denver, Colo. The American Library Service, 117 West 4$th St., New York, N. Y. Henry Paulson Ave 111. & Co., 37 South Wabash . Chicago, Jewelers Circular - Keystone, Book Department, 100 East 42nd St., New York, N. Y. National Jeweler, 531 South LaSalle St., Chicago, 111. Books not found at these sources .may often be found by advertising in the jewelers' trade journals. A more extensive list of references on time, timepieces, and related subjects will be found in Time and Timepieces by Willis I. Milham, Appendix V, page 569 (1923). , 2 2 • Historical an d Descriptive Books 1. Time Telling Through the Ages Harry C. -
Horologicalt. TIMES August2005
HoROLOGICALT. TIMES August2005 American Watchmakers-Clockmakers Institute "8 in One" Spring Bar Assortment *Esslinger & Co. Include ypes - 6 siz s "8 in One" Spring Bar A otal o 1200 pie Assortment We've combined the best selling sizes and types of #82.2014 spring bars in a sturdy 36 compartment box. 36 sizes 1200 pieces Contains these popular styles: "' Double Shoulder- Regular, Thin, Stainless Steel -~ Double Flange (Stainless)- 1.3mm, 1.5mm 1.8mm " Buckle Type (Stainless)- 6 sizes, Short End Receive a Spring Bar/Lug Gauge with purchase of our Spring Bar Kit. #59.0468 Stainless Steel Spring Bar Gauge is graduated on both sides millimeter and inch. 24mm Classic Calf Strap #931-24 Black #932-24 Brown Fine quality strap is padded and stitched. Available in brown and black. Regular length. XX-LONG Straps! Lizard Calf Specify style, color, and size. Available in Black and Brown Padded Calf Sizes: 12mm, 14mm, 18mm, 19mm - -- - - .: --:.-... ~ \'t~ ~"*-:---- ..... -. :- ·- .. '. - • • i I .... ,...,-"'"""~ ~~-~ f4 HW- _....:....__ ___::· --"-- "=' ... .. ~·., • •• ~~ 18mm- Black or Brown HoROLOGICAL~ HoROLOGICAL"' TIMES Official Publication of the American Watchmakers-Ciockmakers Institute TIMES EDITORIAL & EXECUTIVE OFFICES VOLUME 29, NUMBER 8, AUGUST 2005 American Watchmakers-Ciockmakers Institute (AWCI) 701 Enterprise Drive, Harrison, OH 45030 Phone: Toll Free 1-866-367-2924 or (513)367-9800 FE.ATURE ARTICLES Fax: (513)367- 1414 6 Girard-Perregaux, A Silent Revolution, By Peter Conrad E-mail: [email protected] 20 Certification Central, By Vincent E. Schrader Web Site: www.awci.com Office Hours: Monday-Friday 8:00AM to 5:00PM (EST) "Delivery Capacity;" Clocks and Their Kind; Testing in Seattle; What's Happening Closed National Holidays Donna K. -
Dynamics of Periodic Impulsive Collision in Escapement Mechanism
Shock and Vibration 20 (2013) 1001–1010 1001 DOI 10.3233/SAV-130800 IOS Press Dynamics of periodic impulsive collision in escapement mechanism Jian Maoa,∗,YuFub and Peichao Lia aShanghai University of Engineering Science, Shanghai, China bTianjin Seagull Watch Co. Ltd, Tianjin, China Received 10 May 2012 Revised 25 January 2013 Accepted 13 April 2013 Abstract. Among various non-smooth dynamic systems, the periodically forced oscillation system with impact is perhaps the most common in engineering applications. The dynamical study becomes complicated due to the impact. This paper presents a systematic study on the periodically forced oscillation system with impact. A simplified model of the escapement mechanism is introduced. Impulsive differential equation and Poincare map are applied to describe the model and study the stability of the system. Numerical examples are given and the results show that the model is highly accurate in describing/predicting their dynamics. Keywords: Periodic collision, dynamics, escapement mechanism 1. Introduction Dynamics is an important branch of mechanical engineering. In the last century, the linear dynamics was well studied and understood. However, nonlinear dynamics is far from being fully understood because of its complexity and diversity [1]. Non-smooth dynamical system is a special category of nonlinear system. In practice, it is not difficult to find non-smooth dynamical systems, such as a hammer hitting a nail, a signal triggering an electrical circuit, and a disaster affecting the stock market. It is known that a typical smooth dynamical system can be described by an autonomous set of Ordinary Differen- tial Equations (ODEs) [2–6]. Newton method and Lagrange’s equation are two basic tools to model such dynamical systems. -
WATCH DISPLAY TIMESETTING INSTRUCTION MANUAL IMPORTANT Stauer Automatic Tourbillon Watch the CONSTRUCTION TOURBIL
WATCH DISPLAY TIMESETTING position I. The crown must remain in TOURBILLON WATCH position I to resist water. 3. The balance wheel and the escapement are (1)There are 28 jewels in the movement. featured through a special cut-away window (2)This automatic watch features the gener- XII (B) (part D). You can view this amazing timing XI I al functions of minute and hour, as well This watch features minute and hour mechanism in action! The balance wheel (A) II as the unique function of tourbillon. X 1 2 hands as well as a unique cut-away and escapement do not require setting and III XI (C) window displaying the balance wheel will continue to keep motion while watch is (3)There is no need to hand wind a and the escapement in a rotating cage. sufficiently wound. Tourbillon watch if already fully wound IIII and worn daily. VIII (D) 1. Locate the crown on your Stauer watch (above diagram part C). Before the watch is worn for the first time, wind the crown by hand, ten (10) cycles by rolling the crown A - HOUR HAND clockwise (away from you) while in posi- B - MINUTE HAND tion I. Please note the two crown positions C - CROWN (I-II) in above watch illustration. D - BALANCE WHEEL / 2. To set the time, pull the crown out to posi- ESCAPEMENT WINDOW tion II, which will allow you to position watch hands for proper time selection. Once time is set, push the crown back into THE CONSTRUCTION IMPORTANT A Watch Winder is a great investment to ensure all of your Stauer wristwatches are Material of case, case back and buckles: keeping correct time and ready for you All stainless steel • Please remember to wear your Stauer watch at any time! Take advantage of our Watch each day to ensure its lifelong accuracy and Dial: White dial, blue stainless steel hands.