Only Time Will Tell: Examination and Analysis of an Early German Watch
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C9 Collection
C9 COLLECTION O W N E R ’ S H A N D B O O K TIME ON YOUR SIDE... Your Christopher Ward watch has been designed and engineered by highly talented craftspeople to ensure not only accurate and precise timekeeping but also to bring a real pride of ownership that only luxury items of the highest quality can ever hope to deliver. You have made an investment, a good one, and the aim of this handbook is to help you make the most of that investment during what I hope will be a lifetime of ownership. Christopher Ward 1 JOHN HARRISON WATCHMAKER John Harrison was born in 1693 in Foulby, West Yorkshire and lived for most of his life in Barrow upon Humber. He became a carpenter, like his father, was a gifted musician and a self-taught watchmaker, creating his first timepieces entirely out of wood. He moved to London in the 1750s, at the height of his development of his “sea watches” and died in the capital in 1776. The ship’s chronometers were rediscovered at the Royal Greenwich Observatory in the mid-20th century and restored. Today the H1, H2, H3 and H4 are on display at the National Maritime Museum in Greenwich. The H5 is owned by the Worshipful Company of Clockmakers, and is displayed in the Clockmaker’s Museum in London’s Guildhall. 2 THE LONGITUDE SOLUTION In 1760 horologist John Harrison took his 1735 invention of the Marine Chronometer to a higher level by making it portable in the form of a pocket watch - his H4 was effectively the first precision watch and the true ancester of the Christopher Ward collection. -
Chrono Times NAWCC Chapter 190 Newsletter
Chrono Times NAWCC Chapter 190 Newsletter Ventura and Santa Barbara Counties INSIDE THIS ISSUE November/December 2015 President’s Message 1, 5 Tales From The Bench PRESIDENT’S MESSAGE Ferdinand Geitner 2-4 By George Gaglini Meeting Location 2 This Month’s t has been my pleasure to serve as President of Chapter 190 for 2014 Mini Workshop 3 I and 2015. In these years I have seen our chapter continue to grow in Chapter Meeting membership (176 members as of last count) and vigorously pursue its Calendar 3 mission to preserve and encourage interest in and appreciation of the art The Santa Barbara Tower Clock—Breakdown and and science of timekeeping, timepieces and all things horological. Repair Ernie Jensen 6-10 In past mini-workshops and monthly meeting programs, Chapter 190’s Biography: enthusiasts learned how to anneal metal without using flame, and the best Mark Harmeling 11 way to pack precious and delicate clocks for safe shipment by commercial Introduction to Clock carriers. In a recent 2015 meeting program, members and guests discov- Collecting Repair and Maintenance ered the secrets behind “mystery clocks.” In yet another, we marveled at a David Perez 12 –14 series of ingenious homemade tools that help in clock repair and restora- Highlights of September’s tion. Every monthly meeting is packed with information and designed to Meeting 15 raise interest and provide answers to questions attendees may have in the Educational Workshops 16 ever-expanding world of horological knowledge. (Continued on page 5) Chapter Officers 17 Classifieds 18 TALES FROM THE BENCH By Ferdinand Geitner The Weakest Link beautiful triple fusee A English Bracket Clock, chiming on 8 bells came by my shop recently with what the customer thought was a broken spring. -
Collectable POCKET Watches 1750-1920
cOLLECTABLE POCKET watches 1750-1920 Ian Beilby Clocks Magazine Beginner’s Guide Series No 5 cOLLECTABLE POCKET watches 1750-1920 Ian Beilby Clocks Magazine Beginner’s Guide Series No 5 Published by Splat Publishing Ltd. 141b Lower Granton Road Edinburgh EH5 1EX United Kingdom www.clocksmagazine.com © 2017 Ian Beilby World copyright reserved ISBN: 978-0-9562732-4-6 The right of Ian Beilby to be identified as author of this work has been asserted in accordance with the Copyright, Designs and Patents Act 1988. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means electronic, mechanical, photocopying, recording or otherwise, without the prior permission of the publisher. 2 4 6 8 10 9 7 5 3 1 Printed by CBF Cheltenham Business Forms Ltd, 67 Hatherley Road, Cheltenham GL51 6EG CONTENTS Introduction 7 Chapter 1. The eighteenth century verge watch 13 Chapter 2. The nineteenth century verge watch 22 Chapter 3. The English cylinder and rack lever watch 36 Chapter 4. The English lever watch 42 Chapter 5. The Swiss lever watch 54 Chapter 6. The American lever watch 62 Chapter 7. The Swiss cylinder ladies’ fob watch 72 Chapter 8. Advice on collecting and maintenance 77 Appendix 1. Glossary 82 Appendix 2. Further reading 86 CLOCKS MAGAZINE BEGINNER’S GUIDE SERIES No. 1. Clock Repair, A Beginner’s Guide No. 2. Beginner’s Guide to Pocket Watches No. 3. American Clocks, An Introduction No. 4. What’s it Worth, Price Guide to Clocks 2014 No. -
Mechanical Parts of Clocks Or Watches in General
G04B CPC COOPERATIVE PATENT CLASSIFICATION G PHYSICS (NOTES omitted) INSTRUMENTS G04 HOROLOGY G04B MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS (spring- or weight-driven mechanisms in general F03G; electromechanical clocks or watches G04C; electromechanical clocks with attached or built- in means operating any device at pre-selected times or after predetermined time intervals G04C 23/00; clocks or watches with stop devices G04F 7/08) NOTE This subclass covers mechanically-driven clocks or clockwork calendars, and the mechanical part of such clocks or calendars. WARNING In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme. Driving mechanisms 1/145 . {Composition and manufacture of the springs (compositions and manufacture of 1/00 Driving mechanisms {(driving mechanisms for components, wheels, spindles, pivots, or the Turkish time G04B 19/22; driving mechanisms like G04B 13/026; compositions of component in the hands G04B 45/043; driving mechanisms escapements G04B 15/14; composition and for phonographic apparatus G11B 19/00; springs, manufacture or hairsprings G04B 17/066; driving weight engines F03G; driving mechanisms compensation for the effects of variations of for cinematography G03B 1/00; driving mechnisms; temperature of springs using alloys, especially driving mechanisms for time fuses for missiles F42C; for hairsprings G04B 17/227; materials for driving mechnisms for toys A63H 29/00)} bearings of clockworks G04B 31/00; iron and 1/02 . with driving weight steel alloys C22C; heat treatment and chemical 1/04 . -
Pierre-François Leroy: the Lesser-Known Brother of Julien Leroy by Robert St-Louis (CAN)
© 2020 National Association of Watch and Clock Collectors, Inc. Reproduction prohibited without written permission. Pierre-François LeRoy: The Lesser-Known Brother of Julien LeRoy By Robert St-Louis (CAN) “It’s not enough that a watch should give good service importantly will try to shed some light on the life and and work regularly during six to twelve months; it must times of its maker, based on considerable documentary do so during seven or eight years, if possible.” evidence the author has uncovered and, in most cases, —Pierre-François LeRoy (April 1754) translated from the original French. Thus, the largely forgotten Pierre-François will step out from the shadows Introduction of his famous brother and nephew and be given some deserved attention as an innovator and accomplished n France, and particularly in Paris, the name “LeRoy”1 horological craftsman in his own right. in clockmaking and watchmaking is synonymous with quality, prestige, and desirability. At least since the early The early part of the 18th century was a time of great I 6 part of the 18th century, many horlogers (horloger is the innovation and discoveries in horology. Horlogers French term for watchmaker and/or clockmaker) named in France (as in England and other countries) were LeRoy have plied their trade and produced great numbers constantly trying to find better ways to design and of timepieces through the many decades that followed. build clocks and watches so that they would become Not all LeRoys have direct family lines, so it is sometimes more reliable and accurate timepieces.7 The search difficult to determine the connections between them, if to accurately measure longitude, of fundamental any.2 The story in this article deals with an older LeRoy importance to seafaring nations like France, England, family whose importance in the early days of watchmaking Spain, and others, caused great attention and effort to and clockmaking in the 18th century is undeniable. -
This Is Part 1 of 2 on Servicing the 400-Day (Anniversary) Clock
1 This is part 1 of 2 on servicing the 400-day (Anniversary) clock. This article will be a 2-part series devoted to the servicing of the 400-day or Anniversary clock by Michael P. Murray. Mike was AWI’s 400-day clock repair bench course Instructor. The 400-day course is a 2-day “hands on” affair with the students working on the clock that they bring and Mike can accommodate anywhere from 8 to 16 students. For more information about Mike please see his Website at: http://www.atmosman.com/400dayin.html . This article is copyrighted to the author and references. Members, In my initial series on the 400-day clock, we will cover final assembly right through final timing. My assumption is that we all know the basics but it’s the last seemingly basis steps where most of the troubles occur when servicing this slightly temperamental timepiece. My goal in writing these articles is to get you past many of the pitfalls and erroneous assumptions. There are no real “secrets” and I hope to enable anyone who reads this by dispelling any fears or myths. So if you’re not currently servicing the 400-day, I urge you to give them another try. Series Assumptions A quick mention of what I expect as the “basis”. You’re checked for and corrected any pivot, tooth, or gear depthing problems (depthing problems are extremely rare), used a mainspring winder to remove and install the mainspring, cleaned and lubricated same, pegged all pivot holes, polished all pivots and pivot shoulders, polished the anchor pin and the inside of the fork tines, and cleaned all parts. -
Kintaro Hattori in 1881 Founded the Company That Was to Become Seiko
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½PPEZSMHMRXLI)RKPMWLPERKYEKIPMXIVEXYVIEFSYXXLITEWXTVIWIRXERHJYXYVI SJXLIGSQTER]8LIEYXLSV .SLR+SSHEPPMWENSYVREPMWX[LSLEWWTIRXQSWXSJLMW[SVOMRK PMJI[VMXMRKEFSYX[EXGLIWERHXLI[EXGLQEVOIX¯JSVRIEVP]]IEVWEWXLIIHMXSVSJXLI PIEHMRK&VMXMWLXVEHIRI[WTETIV[LMGL[EWXLIRGEPPIH6IXEMP.I[IPPIVERHWYFWIUYIRXP]EW XLIIHMXSVSJE[EXGLQEKE^MRIJSVIRXLYWMEWXW*SVXLIPEWX]IEVWLILEWFIIREJVIIPERGI NSYVREPMWX[VMXMRKEFSYX[EXGLIWJSVLMKLUYEPMX]QEKE^MRIWERHREXMSREPRI[WTETIVW,MW EVXMGPIWLEZIFIIRTYFPMWLIHMRXLI97%-XEP]+IVQER]*VERGIXLI9/ERH.ETER '328)287 'LETXIV ,YQFPI&IKMRRMRKW'VIEXIE7SYRH*SYRHEXMSR 8LIIEVP]7IMOSWXSV] 'LETXIV -RRSZEXMSRERH6IßRIQIRX %RI[HMVIGXMSRJSVXLIWXGIRXYV] 'LETXIV 8LI(IZIPSTQIRX=IEVW 8LIIEVP]LMWXSV]¯ 'LETXIV 'SQTIXMXMSRW7TYVVIH7IMOSXS2I[,IMKLXW -RXIVREXMSREPVIGSKRMXMSR 'LETXIV 8LI4MRREGPISJ1IGLERMGEP)\GIPPIRGI 8LIWXSV]SJXLI+VERH7IMOSGSPPIGXMSR 'LETXIV 8LI(E]XLEX'LERKIHXLI,MWXSV]SJ8MQI 8LIEHZIRXSJUYEVX^XIGLRSPSK] 'LETXIV /MRIXMG;EXGLIW®%PP 8LEXMW&IWXMR7IMOS8IGLRSPSK] 8LIGLEPPIRKISJGPIERIRIVK] 'LETXIV 8LI²+VEQQEVSJ(IWMKR³ -
Time and Frequency Users' Manual
,>'.)*• r>rJfl HKra mitt* >\ « i If I * I IT I . Ip I * .aference nbs Publi- cations / % ^m \ NBS TECHNICAL NOTE 695 U.S. DEPARTMENT OF COMMERCE/National Bureau of Standards Time and Frequency Users' Manual 100 .U5753 No. 695 1977 NATIONAL BUREAU OF STANDARDS 1 The National Bureau of Standards was established by an act of Congress March 3, 1901. The Bureau's overall goal is to strengthen and advance the Nation's science and technology and facilitate their effective application for public benefit To this end, the Bureau conducts research and provides: (1) a basis for the Nation's physical measurement system, (2) scientific and technological services for industry and government, a technical (3) basis for equity in trade, and (4) technical services to pro- mote public safety. The Bureau consists of the Institute for Basic Standards, the Institute for Materials Research the Institute for Applied Technology, the Institute for Computer Sciences and Technology, the Office for Information Programs, and the Office of Experimental Technology Incentives Program. THE INSTITUTE FOR BASIC STANDARDS provides the central basis within the United States of a complete and consist- ent system of physical measurement; coordinates that system with measurement systems of other nations; and furnishes essen- tial services leading to accurate and uniform physical measurements throughout the Nation's scientific community, industry, and commerce. The Institute consists of the Office of Measurement Services, and the following center and divisions: Applied Mathematics -
The Haller Time Bomb (GTB)
The Haller Time Bomb Clock by Mervyn Passmore 1 The Sigfried Haller ‘Time Bomb’ Anniversary Clock This unusual Anniversary clock has been nicknamed ‘The German Time Bomb’ because it normally ticks away happily for years, but suddenly and without any warning, its toothless ratchet can slip and the mainspring will unwind noisily. It can destroy itself in the process, and can cause injury to anyone near it at the time. It can shatter its own dome as it explodes. It is an extremely dangerous clock and you should consider very carefully before putting it on public or domestic display unless you are sure it is only partly wound. If you are considering working on the movement, either to service or repair it, you need to be aware that this clock was not nicknamed ‘The German Time Bomb’ as a term of endearment but because it can and does cause injury without any warning, and it can do so at any time, ticking or not. If you are not an experienced clock repairer, do not attempt to work on it. Put it in a strong carton, cover it with an old towel, seal the box and mark the box appropriately. Store it away from children. Most accidents occur when owners unwittingly undo the four screws on the back plate, expecting to find some sort of mechanism inside. Do not Do not start dismantling undo these screws unless you know that the by undoing these screws mainspring has been let down fully. on the back. If you do, the clock may explode. -
Try Pulses by the Minute in Common Watches
News, Notes and Queries THE PHYSICIAN'S PULSE WATCH SIR JOHN FLOYER (1649-1734) may justifiably be credited with the invention of the first efficient instrument of precision to merit application in clinical practice. His own account of the development of a pulse watch for the accurate measurement of pulse rates in his patients has often been quoted,'7 and the instrument is known to have been commercially available in 1707.8 But Gunn,3 writing in 1934 thought that no specimen had survived, and no example of such a pulse watch constructed in the last years of the seventeenth century has previously been illustrated in medical writings on the subject. In opening his preface to the first volume of The Physician's Pulse Watch, published in 1707, Floyer described the evolution of the instrument: I have for many years tried pulses by the minute in common watches and pendulum clocks, when I was among my patients. After some time I met with the common sea minute-glass, which I used for my cold bathing, and by that I made most of my experiments. But because that was not portable, I caused a pulse watch to be made which run 60 seconds, and I placed it in a box to be more carefully carried, and by this I now feel pulses. And since the watch does run unequally, rather too fast for my minute-glass, I thereby regulate it, and add 5 or 6 to the numbers told by the watch. I also made a half minute-glass, whose case turns like a dark lanthom and that was portable and useful in feeling of my patients' pulses, but that differed 4 beats from the minute glass, which I kept at home as my standard. -
Objects Specialty Group Postprints Volume Fourteen 2007
Objects Specialty Group Postprints Volume Fourteen 2007 Objects Specialty Group Postprints Volume Fourteen 2007 Compiled by Virginia Greene, Patricia Griffin and Christine DelRe Proceedings of the Objects Specialty Group Session April 19 and 20, 2007 35th Annual Meeting Richmond, Virginia The American Institute for Conservation of Historic & Artistic Works This publication entitled Objects Specialty Group Postprints, Volume Fourteen, 2007 is produced by the Objects Specialty Group of the American Institute for Conservation of Historic & Artistic Works. Cover photograph by Franko Khoury. © 2008 by The American Institute for Conservation of Historic & Artistic Works. The papers presented in this publication have been edited for clarity and content but have not undergone a formal process of peer review. This publication is primarily intended for the members of the Objects Specialty Group of the American Institute for Conservation of Historic & Artistic Works. Additional copies of this publication are available for purchase by contacting AIC. American Institute for Conservation of Historic & Artistic Works 1156 15th Street, NW • Suite 320 • Washington DC, 20005 (202) 452-9545 • fax (202) 452-9328 • [email protected] http://aic.stanford.edu AIC Objects Specialty Group Postprints, Vol. 14, 2007 TABLE OF CONTENTS Foreword …………………………………………………………………………………………1 Object Lessons: The Politics of Preservation and Museum Building in the Early 20th Century …………………………………………………………………………………………..3 Sanchita Balachandran From Delicious to Not Quite Right: Subtleties in Discerning the Authenticity of African Art ……………………………………………………………………………………4 Stephen Mellor Thermoluminescence Dating for European Sculpture: A Consumer’s Guide …………….32 Jane Bassett Only Time Will Tell: Examination and Analysis of an Early German Watch …………….47 Meg Loew Craft Refining the Database for White Marbles: Isotope Analysis of 18th Century Marble Busts by Jean-Antoine Houdon ………………………………………………………65 Katherine A. -
Precision and Splendor: Clocks and Watches at the Frick Collection
ON VIEW IN THE PORTICO GALLERY PRECISION AND SPLENDOR: CLOCKS AND WATCHES AT THE FRICK COLLECTION January 23, 2013, through March 9, 2014 (extended, note new end date) Today the question “What time is it?” is quickly answered by looking at any number of devices around us, from watches to phones to computers. For millennia, however, determining the correct time was not so simple. In fact, it was not until the late thirteenth century that the first mechanical clocks were made, slowly replacing sundials and water clocks. It would take several hundred years before mechanical timekeepers became reliable and accurate. This exhibition explores the discoveries and innovations made in the field of horology from the early sixteenth to the nineteenth century. The exhibition, to be shown in the new Portico Gallery, features eleven clocks and fourteen watches from the Winthrop Kellogg Edey bequest, along with five clocks lent Mantel Clock with Study and Philosophy, movement by Renacle-Nicolas Sotiau (1749−1791), figures after Simon-Louis by a private collector, works that have never before been seen in New York Boizot (1743–1809), c. 1785−90, patinated and gilt bronze, marble, enameled metal, and glass, H.: 22 inches, private collection City. Together, these objects chronicle the evolution over the centuries of more accurate and complex timekeepers and illustrate the aesthetic developments that reflected Europe’s latest styles. Precision and Splendor: Clocks and Watches at The Frick Collection was organized by Charlotte Vignon, Associate Curator of Decorative Arts, The Frick Collection. Major funding for the exhibition is provided by Breguet. Additional support is generously provided by The Selz Foundation, Peter and Gail Goltra, and the David Berg Foundation.