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© en hr .u w w w lit de ur . at er de Early Swiss Wristwatches and their Manufacturers 1910 -1930 © w w w .u hr en lit er at ur . A Research into the 13-ligne lever Escapement Movement Koen Vermeij & Leo van Rijn Early Swiss Wiistwatches and their Manufacturers, 1910-1930 A Research into the 13-hgne Lever Escapement Movement ur . at er Lay-out: Studio KV62 7 Schemes: Koen Venneij Cartoons: Leo van Rijn Piclures: by the authors, except for a number of reproductions Typeface: ITC Berkeley Oldstyle, Frederic W. Goudy, 1938/1983 de Koen Vermeij & Leo van Rijn, NL-Aerclenhout - Heiloo 2015 lit Printing: BoekenGi Ide, Nl-Enschede w w .u hr en ISBNIEAN: 978-9-462330-65-8 All rights reserved © w ©Koen Vermeij & Leo van Rijn Aerden hout & Heiloo, The Netherlands. The auLhors have endeavoured Lo Lrace all copyrighL holders of image material as far as possible. They would appreciate any information that will enable to complete their search. CONTENTS 3 INTRODUCTION PART ONE CHAPTERl THE MANUFACTURES de HO\V IT ST1\RTED ur . TOWARDS \1ACHI.t\E \1ANCFACTURI.t\G Ill[ PROCESS Of' \1AKI:'JC vVATCllES 11\ Ill[ LATE 1700S, EARLY 18005 HOW A WATCH 'vVAS ~MADE hr en lit er at The contribution of Jean Antoine Lepine ( 1720-1814) The achievemenLs of Frederic Japy (1749-1813) Georges-AugusLe LeschoL (1800-1884) Pierre Frederic Ingo1d (1787-1878) Georges Frederic Roskopf (1813-1889) AT THE BEGTNNTl'\G OF THE 2on 1 CF.NTURY 13 13 14 15 16 16 18 19 22 23 24 Fabrique d'Hor1ogerie de Fonlainemelon A. Schild 5.A. Fabrique d'Horlogerie A. Michel S.A. From Ehauches S.A. to ETA S.A. 26 w w w .u Three Swiss t'bauche manufacturers © CHAPTER II FROM POCKET WATCH TO WRISTWATCH FORERUNNERS Ill[ CllA.:JCE From the ladies' perspective: the bracelels-monlres From Lhe genLlemen's perspecLive: Lhe montres-bracelets 31 31 32 32 D COUl\TER MOVEMEl\TS 34 FURTHER DEVELOP\1E.t\TS 35 THE OUTSIDE CHAPTER lll or THE WATCH 41 THE ROUND CASF. TH[ CCSHIO"\f CASE CRYS1ALS de CROW!\S at ur . CASE MATERIALS LUGS STR1\PS lit Figures & radium The significance of the coloured 12 er 011\LS hr en HANDS 41 42 42 43 43 44 44 46 46 48 48 CHAPTER IV THE MOVEMENT © w w w .u T\VO TYPES Of POCKET WAfCHES A)JD THElR USE LN WRlST\VArCHES BASE PLUE AND APPEARAl\CE Of COCKS A)JD BRlDGES MOVElV!El'\T DF.CORATTONS DL'\L rIXATION THE HJ\'JD GEi\R TRAIN \VINDING i\ND SETTl!\G SYSTEMS TII[ BALANCE COCK- REGCLATOR SYSTD1S- BALANCE HAIRSPRING & STCD JE\VELS SIMPLE VERSUS El\RICHED: J\ COMPi\RISOl\ rROM EBAUCHE TO MOUVI'.MENT 51 51 52 54 54 54 55 56 57 58 59 60 CHAPTER V 63 THE RESEARCH 64 64 TOOLS roR IDEKTirICATIOK Comparison wiLh signed movemenLs Manufacturer's name on dial The trick with the dial Feature match A patent number The selling mechanism de ur . at er or DET[R\1IKIKG I~~ER PROPORTIO~S hr en A first try Taking base measurements The mathematical 'footprint' Summary of our tools lit A METI IOD 64 .u THE CORPCS Of RF.SEARCHED \-1C)VEMENTS 64 64 65 65 66 66 66 67 68 69 CHAPTER VI REMARKS, EPILOGUE & ... 73 73 74 74 w w w R!:.SUUS Of THE RESEARCH EARLY VERSCS LATE MOVEMENTS MEASUREMEKTS 74 78 78 FOOT PR I'JTS 79 79 © MOVEMEl\T STYLES CALIBRE SIGKI.>!G BAU1NCE COCK IVIA.RKLt\G SOME REMARKABLE \10VE\1E~TS TH[ DECAY or THE 13"' "'.vlOVDff'.'.JT 81 82 87 EPTT.OGCE ... REFERENCES PJ::iRlODlCALS de CATALOGCES BOOKS \VEBSlTES at lit hr en lnLroducLion Guide to the descriptions Guide Lo Lhe fooLprinLs er THE DATABASE OF RESEARCHED MOVEMENTS GUIDE TO THE DESCRIPTIONS & FOOTPRl\JTS ur . PART TWO DESCRIPTION Of THE MOVE\ff\JTS 87 87 87 88 93 97 97 97 99 103 C Cortebert 129 Cyma/Tavannes 131 D Damas 133 E ElecLa 137 - Election 140 - Eterna 141 F Favre 142 - FEF 143 - FHF 145 G GvVCo 164 .I lnvicta 173 K Kurth 174 L Lanco 176 - Lavina 178 - Longines 179 M Maire, E 183 - Maire, 0 186 Manzoni 187 - Marvin 188 - Monteher 189 - Movado 190 0 Omega 194 P Parrenin 197 - Phenix 198 R Rebberg/Aegler 199 - Record 201 - Revue 203 Roamer 205 - Rode Watch 206 S SfG 207 - Sonceboz 211 Z Zenith 216 Anonymous movements 21 7 © w w w .u A AM 103 - AS 106 B Bulla 117 - Bulova 120 - Buren 121 THE MOVEMENT FOOTPRI:t\TS 227 Tiii' MANU!'ACTURl'RS ~\t lirst .~la:1.;:c <:al'~)' S\'•· iss •,vrisl'.\'<\Lt:hcs fn:1n1 the p('til"~cl b~·-\vccr1 l Y10-: 930 ~t·c ;;~n1i~1~· ill ~\ :JP":.i.t'.31\~I.!. l he y ~L~ tX'JIJ!\C:l <; r cusl'l\'ll-shap.cC:.. •,viLll ~Ui ('ll<\111cl dial Jt:d bh\d; o: lli;l".t -~1mtm\~ :mmb~t'$. '· miall ~e.~on:l :iand ac six, ''1re lug.s a..,d 11.:.ua'ly =- tt~·d \i.itl" 1 ).lig-i-e. \.'~!Jl i', ..~.$ . Ano:ht>r g·!.reli\.· fent1Jr~. ii; :ht' '>f th~.5e \\,a:\.:hes. lr nlt'>S: \.~.$~.;1 tl~.} don't •.:::.11-y any bra'1d na......,e c1r.. hr.: <liHls Hntl hr.\T. nn m:irk tl'" nam.". fr gravt•.cl ilr. 1hr. :-1.1vt'nlt;:ll. Th~.... 1 ,,·11ch:~ are or1~·r. <'P.lh~I ' mir1:1ry \V.11<:h ,1r •1 rt:nc:h \\·:uch' ar1<; 1l-.i> llr-..;1 in1en!':'Yt>-: p-1:-Jit:al tl...,... durnti \\-"V1/ I. ~111(1n}'T'li:y at ur .d e 4 er l :ow IT "TAl\TEO lit \\;t::. l..110\v 1J1al :,~·i:-.,.., '~1h.:l1111~ki11~~ Iii~ a .Jpc.u"C:J :J....,.: r:.iJ'."C u: IL...,:- :ndt!f.!1..".l:J uU cnd1 in O.:oc"" ~round ll1~ 1i:.iddlc ol ll1~ l c'lh ::c_1t-1y. hem there, it w w w .u hr en s~r.:ad '.O"·ar.:13 L.tc nortr. ol Swl.,crhnd ~1'.d :t is .c.swn•-d uat LI•~ lirst wa1ch nl.~kin~ wor.<.:'l:op~ ...:re ~a:i:lllsh~d In 1hc VJll~~ J.~ )Ntx ea l'fil.1. Th:.; area, oilo.tJted :it Jb..'\IC J;)(IO m abov.: ~J kvc. was I•' some cxccm eo.:t ot: fmm chc rest of :he \\'Or· d 1.., "";nter:hll~. Pr or to \ .'\C. inc:t\~..t r ,lli~.4t1C>'"" of the rt"'g'!C>"'l, : he 1rhab1t.-n-1$ of ll-.i:· '.·111'.~.y \ \,'(;'l'i:' rr~~:r1y ftu111~r"" Ouri ng. lh(" long. \vi·.-.ter .,,\,n,h-:; .he l:lnd ~1'~ 1:..rgt;1y \:.;Jv\>··~.l: -.vi.h :•nU\V ~nil .he l:a.llf •.Yf!'"(. kep·l :.111.he '.•.nl,ll...5. TI1.;· f(lrnit;rs htJ.d lit.1<:; 1110rt; I() ()(\'.Uj1}' I1'1~"11l"'it"1 Vf~S V\' il h ll'ltU'I I (l do ;,;nnh; ''flt'.i'.'U 1;'.'liJl'l~ '\" \•;1~r), \ll1 I h~;', .. f~t'Tl1 l10 11sc:-. tU·.d I In• :· ral'i i .1~\ OI V.'OOd , ~:lOJh:, lc~O '. u:: <.H id I l1t:li1I:-.. 'l'l1c~:· .....t\.j !'..... (HOVt:d © <p.1i1<.; U:"lci'ul :·~H v.'a'..:.:h111;t'rdn>.11 • ~H itl '.t:it!i'. fo r 1n~1king ;.:lHl'.po11t;111s Ii'..;.(: cE~d~. c;.l.~!·:;. bri.:'.g.:·~. g::ars, pi11io11...; 1 bt\rrcl$1 lcvl!'i~ c:Lc. 1ord~[....L·J» h' f.1Uy q ..~llilicd ...,.~u.:·h inaJ...-:.::d, v.-1:.;:J;;~ :·au111bL·1~ \VCl'C .~!<'\Villi( 1:.ii,L. 'l'l:c h'..::::.I::: \.Vl'.:lt: iu,·cJlti\'~ ::n·~'Ju~h h' nlake tl:o:ir L"l\vn lL"l<•ls in o:·d~r ·.o ~hn.µlify J ttd il1.:ro:J6C prodttl'liL"lll. Tl:o:y \Vt.?ro: ):'ll'l?))ared to \~.:""Irk lor g ho u1~ :,:lnd to ·n va."l h·~. \\'Dnien arid r:h1ldren 111 the.1:-r""IC.e.ss, ~::ind s""I chf')' be..:·:,.11111: 111e~p~.""'lt-'v~. reh(lble n·1ct 1nt1..:·h y,::ilue:d ~t:):'lp 1.:r$ to th~. \'1ac.:hnu1,k..~.;.'.i. 1: pro·~1dt•d t'il•.111 'A".t'i n 'lt~ry \\.'~.'<:.t.Y:"1~· f'<(l(. ~0111\'i:' ,,f in~xnn..>., -~vh1ch todny ,,,:~. \':r:~-.1ld l;nll (l.n ~~l:ononih; , ,1.1 i"'l -\\i 11 s in1,1tir,}n f(ll" bo:h 1:1':'111f1~ nnd ·,•.:atl·hr.nkf1~. TO\VARDS l:VIAC.:HIJ\"E :'vLA.NUFACTCRINC Today one has hardly more than a notion of the l~Kt that around the year 1750 most corn- ponenls of each individual waLch slill had lo be made by hand and involved laborious, detailed work. In those days all watches were very e:-;pensive. These often beautiful and some.times very complicated pieces of great value could only be acquired by the nobility, at ur .d e the wealthy upper class and diplomats_ _J vase escapement w w w .u hr en lit er Uy t11e late 1700s t11c Swiss had made signiflcant progress in the development of tools to render more efficient. manufacturing of watch parts possible, and as a result, cottage home manufacturing evolved into a pre-industrial system of production. And because of the growing demand for timepieces, further developments and innovations were made tmvards the standardisation of more efficiency and the real isation of greater amounts of production The Vallee de] oux devclopul imo a centre of tool, eq uipmcm and machinery making. l~y the end of the 18th century the industry had grown in size and scale and the increased requiremem for 1~hauches led ro rhe development of the first machine-based movemerrt factory. © The emerging Sv,,.·iss induslry evrntually did well, and was able to produce al highly competitive prices. The focus \Vas very much on the prod11ction of lmv-cost, twohand-key-wound and key-set pockeL watches without complicmions, in order to meet the ever-increasing market demand. Initially. manufacturing was mainly for \Vatches \Vith verge fusee escapements. From circa 183.'5 onwards cylinder escapements, which were cheaper to produce, became popular, vvhercas later the more reliable and accurate lever escapement watches gained popularity. 14 Swiss /r:vcr r:scupcmeni THE PROCESS OF lv1AKI>IG WATCHES ll\ THE U\TE l 700S, EA.RLY l 800S All watches had some type of metal case body, a case back and a bezel with crystal and a mechanism inside. The gears and wheels rhat inake up the inner works of early watches were sandwiched between at ur .d pillars on one or these plates. Both the e two metal plates connected r.ogerher wirh - upper plate and the pillar plate were precisely machined and d1illed. The gear train, actually transrnilling the mainspring er power to the escape wheel, consisted of four wheels: rhe mainsp1ing bmTel, the lit a look into a vngt· <·.·swpt·ment centre wheel and pinion, the third wheel and pinion and the rounh or second ouler worh anly fusee watch movement hr en hand wheel and pinion. i\ fusee, to which the key was applied for winding the mainsp1ing, was connected to the barrel by a chain. .u The rnotion, necessary Lo power the watch. was supplied by uncoiling the fully wound main spring. i\n escapement mechanism of balance w w w wheel wit.h hairspring and spindle or lever controlled the trnnsmirting motion of the gears and pinions, and so ultimately the minute and hour hand © Often, a master plate was machined and used to make exact copies. The plates were cleburrecl and polished afrer machining. The small gears needed for the movement were stamped out or brass, using precisionmade steel dies. Hairsprings were fonned from ve1y fine spring wire. Mainsprings were clra\vn ai1d rolled. \:Vatch dial faces were stainped out of a base metal, coated with enamel and the markings applied by hand. Next the dial face was heated in an oven at high temperature. Hands were stamped out or steel or brass and hand-rinished. 15 HOW A WATCH WAS MADE at ur .d er workers at thdr /Ji:nc!?cs - studyj(Jr the.frc.·suJ1:s in tl?c railway station ar. La Chcwx-ck-rond.s. Ceorge Dessoulavy (1898-1952) courtesy Watch Around tvi<1g<1~me. hr en lit W11ereas in the early 1800s watch movements were sandwiched between two met.al plates connected with pillars, in the late 19th and early 20th century all parts were assembled on both sides of only one single metal plate. The mainspring barrel, the wheel train, lever and balance wheel on one sick, were nicely located in recesses on the main plate and covered with dedicated cocks and bridges. Tl1e crown wheel, ratchet wheel and click were posilioned onto the barrel b1idge and the regulator was placed on top of the balance cock. The other.side of the main plate, the dial side, housed the hands driving parts; the cannon pinion, the hour and minute wheel all fitted in dedicated recesses. Also rhe hand-set.t.ing and winding parts were at rhe dial-side holes and recesses. e ATTHL 13EGl\ll\lNG OF THE 20TH CEl\TUl<Y © w w w .u The quality or the metal used for rnain plate, cocks and bridges was greatly improved, and the alloys for mainsp1ings and hairsprings became harder and more elastic. The gilding technology developed lo a higher standard, and the use of synthetic rubies increasingly became tl1e clefaulr. Large numbers or cylindrical parts were being produced on automates. The dials still consisted of copper discs provided wir.h a number of layers of enamel. The characters, which were formerly painted on watch dials by artists. were now applied by means of a transfer method, using a steel stamp and rubber transfer pad in a dial-printing machine. bCISr:.' plal C - hase plarc - dial side cochs and bridges si.dc FROM POCKET WATCH TO WRISTWATCH FORF.RLJl\\JF.RS Due to the simple fact that \.vomen wear jewellery and men do not, it is on ladies' anns and at ur .d er The trick of 'hiding' small watches was also applied to rings, brooches, purses ai1d lorgnette hoxes. Ar least, rhe latter fi.gure in the Catalogue of the famo us 185 1 London Exhibition. e wrists that we see the f'i rst - what we now call - wrist.watches appear. I .adies were accustomed lo wearing b ra<.:d et.s, so a<lc.li.ng a small watch w the often overwhelming numher of d iamonds and or.her precious stones \Vas quir.e in line. It goes without saying that we are not referring to the most u nfon.unat.e of people here. art.de.co-style brooch watch by Carli.a lit Alt hough by th is time we are sti ll more than hair a century away w w .u hr en from the. general acceptance of the \Vristwatch by both sexes, we nevertheless see exarnpks of wrisrwatches appearing. Around 1880 the company Girnrd-Perregaux is .said lo have ddivere<l the first mass-produced watches for German naval officers, to wear on chains around their vvrists, and in Lucerne ea 1886. gold and silver watches on so-called 'scissor bands' \Vere being sold. Surely these two examples are wrislwatchcs in a wider sense, for in their appearance they hear a close re.semblance. to the pocket © w watch: round and thicl<, the only difference being the soldered-on, bow-shaped strap attachments. There is a lovely story abou t the origin of the wTistwatch which ap peared in many pub Iicat ions: A good woman, seated 011 a l>ench in a public parl~, was sucflling her child. In ordc~r to observe the time, sht: had attached h<::r watch around her arm. A passer-by wm .~truck by this nalvt: ingenuily. On his return home, he soldered two lugs onto a lady's walch, and added a slrap! Well, ir. may have happened like th is. Bur. this 'inventor' was cenainly nor. the only one. It may have originated in many more places at about the same Lime, for the idea \.vas in lhe air'. just two lugs, soldered onlo a pochel walch 31 en lit er at ur .d lt \Vas the very outbreak of \'vv\7 Ti11 1914 that made a quick and direct impact on the development and mass production of Limepieces, as Lhese were practical in \Varfarc. for the spread of the Vt'Jist1vatch, there couldn't have hcen a /Jeller silualion lhan lhis war reported rather cynically - a jubilee publication of the Swiss watch industry. \Vristwatcbes wiLh protective grids across Lhe glass, with radium applied to dials and hands, ·with (added) 24-hour indication came onto the markeL Almost all models were based on the pocket watch. e From the gentlemen's perspective: the montrcs-bracelets (\vatch-bracelets') Along wiLh Lhe wristwatches for ladies, men's wrisLwatches \VCtT gradually gaining ground. Unfortunately, iL LOok a four-year-clisasLer to trigger a clefiniLive interest in \Vristwatchcs for men, too. © w w w .u hr \\lhen the war was over, there were other groups of men like sportsmen and motrnists, \Vho had good reasons to wear their \Vatchcs on tl1c \v11sts. After about 1918 sport developed to a v·mrklvvide mass movement, and the number of motorists was also grmving. Whether on horseback or at the stee1ing wheel of a car, the wrist\vatch turned out to be highly useful. initially, aspects of style were only of minor importance. The emphasis on functionaliLy, rather Lhan on style, crystallized in the common use of 13-ligne lever movements, seL in round or cushion-shaped cases, noL unintentionally just the core subject of this book quire an mvenlicm! .1 1 © w w w e at ur .d er lit en hr .u . THE MOVEMENT at ur .d e T\VO TI'PES OF POCKET WATCHES ANO THEI R USF. 1\1 WRIST WATCHES Ebauche man ufacturers generally offered two types of moveme ms: the savonelle and the lepine. T he latrer was designed for o pen face pocket watches with the crov..'11 at 12, the savonellc for the closed case or so-called 'hunr.er pocket. \Vat.ches' ·with the crown at. 1. en lit er for wristwatch es both types \\'ere initially u sed , since move1ncnrs 1nade specifically for \1\-Tist"vaLches were not yel in existence. It will be clear that savonette rnovernems could be u sed in \Vrist.\vat.cht~s wirhom any alteration. © w w .u w where lepine watches were directly prepared for the wrist, an awkward time reading was the result (1). The simplest way of using the lepine movement for a default-orientated wrist,vatch was to tum the dial by 90 degrees, and leave out the small second. Thus, the result was a 'dress watch' (2). The more elaborate way of using a Lepine movemenL was Lo add an indirecr.ly driven sweep second hand via the third wheel. This way the second incli- hr Ll' pine movements could be used as vvell, although alterations had robe made. In cases cation cou ld be kept (3). -· lt'pinc di1 ccil:y t.o the wrist 2 lt'pinc as a. dress watch 3 lepine n·Uh cm indirecl <;1vn:11 second hand inside - outside • •.. •lepine movement \·\ the small second wheel pivot cw. <~({ 51 STMPT .F VERSUS F.NRTCHF.D: A COMPARISON \\i11en ohserving the Movado and I'.lecta movements, we notice - apart from the presenl condiLion - differences in q ualil y. The IV\ovado fact01y is well respected for at ur .d e the delivery of quality products. The first Movado movement shmvn. l1owever. musr have been one of lhe cheapest versions of er The two Elecrns show similar differences. movement.s made by 1../\.6"]. TJiiisheim (lvfovado): a 7-jc.wd, jlai hairspring muvcmenl (qua/He' hem couran(l vs a 1.5-je.wd, /Jregw:.l hairspring w/i.hre (quulilc' .~oignt) and nne with additionCll scn:wed rhatcms and a s1van-ncckjl11c.·-n~~u!at.or (qualite trl:s snigne) lit their production. despite its perlagc. The two others rcprcsenl rni d-qual iI y (qua/iii soignt'.) and best quality (qiwlite tri::s soignd respective 1y. w .u hr en The first one looks to be standard quality (hon cow-ant), the 'factory-ac.~justed' second one (qualUt' lri::s soigne) is nicely jewelled wiLh 17 rubies, and the gear train has he.en perfocdy equipped with screwed gold chdtnns at the cocks-and-bridges side. lr has a beautifully polished swan neck w conlrol Lhe regulaLor index. and Lhere is a breguel hairspring. The © pe1foge. w w winding and rnrchet wheel arc polished, a n)t.es de Gem~vc patrem is applied Lo cocks and bridges and the dial side is deconned with a It would have been even more attractive if cocks, bridges and wheels had heen chamfered and polished r.o a high gloss. indl.1ding the steel screws. A perfcct qua Iit y wou Icl have been reached irt he rnovement had not simply been ac.~justed, but fully adjusted to 6 positions, cold, heat and isochronism. This only occurred wir.h a few watches of the highest quality brands like Patek Philippe. movements m<uk by Gallet(,., Cie. S./1. (17.lecla). a siandard 15-jcwd copy vs a wty sophlsliWlt'd example: 17 jfwels, swan-nffh Jin~ luning..~creiwd chatons, hoth movements do haw:. a hreguet hairspring 59 © w w w e at ur .d er lit en hr .u and THE RESEARCH So far we have dealt with the history, the production, the appearance and the technology of the trench-watch. This was done in order to bring about an understanding of this ty1X of watch, and to prepare for what follows. The manufacLures like Lo display their mark on bridges or cocks (first row pictures). en I3uren lit er at ur .d e vVithout doubt, having more than 240 movements at one's disposal is a godsend for co11ectors 1vho want to research such calibres in depth. Faced \Vith such a huge amount, a first action must be aimed at organizing structure. Therefore, fully identical movements were picked out and set aside, so that the collection was rid of its 'doubles'. The remainder consisLecl of 121 movemenls, vvhich is sLill a subsLanLial number Lo work vviLh. As mentioned in the introduction, our goal was to identify as many as possible anonymous movemenls. Out of 121 calibres 75 were anonymous and 46 had a producer's mark. Lcmw Omega 'ebauche' maher's logos on the bme plate © w w w .u hr On ebauche movements producer marks generally do not occur on the visible part of the movemem, but moslly on the dial side of the base plate, or on a hidden place elsewhere, e.g. underneath the barrel bridge (second row pie- ._ A. Schild tures). There is an explanation for this: ebauche makers hid their producer's mark to give way to that of the etablisseur (third row pictures). Election Cyma Delemonl (ehauche AM) rleuricr f'u ntai11mclon Thommm lvfan;:u11i Sch ild f'rhfs etablisseu r's logm on bridges: !!!!!1!!~ Ingersoll (ebauche Damas) ~ Palri.a (ebauche FHF) Patna (e}Jlw che Record) 63 w w w e at ur .d er lit en hr .u © © w w e at ur .d er lit en hr .u w menLioning a first result here: it \Vas a surprise to find that one type of movement could be executed with different cocks-and-bridge compositions. Although the inner proportions, i.e. the position of the pivots remains the same, the number of cocks and bridges and also their shape varies . THE CORPUS OF RESEA.RCHED MOVEMENTS lit er at ur .d e In the course of time we have collected 2 4 3 movements, \Vithout preference for any brand. We collected whatever \Ve could find. These calibres were partly incomplete, but still good en ough for the purpose of our research. Other movements were in excellent condition and could be u sed to assemble complete vvatches. This stock was the basis for our research. As there are many idenLical movements, we didn't need to research all of them. Vle already mentioned that we co unted 121 different calibres after picking out the doubles. The research taught us that this corpus con tained a number of the mentioned 'variations on a theme' (one of \vhich is shown on th e previous page) , in such a way that finally we found 49 basic types. This means that the database will record 121 m ovements and 49 footprints. w w w .u hr en We do not pretend our collection to be complete. From the moment we decided to stop input for the purpose o[ preparing this publication, \Ve discovered more 13 111 movements. Because we had randomly collected, we guess that the collection more or Less represenLs the market of our period. Apart from the 2.5°,{) of movements that we could not trace, the group of 233 identifiable movements is clearly dominated by three e/Jauche manufacturers: AS, FHF and AM, immediately foll owed by G.vV.Co. These four manufacturers already cover 42% of our stock. Cyma and Movado are represented in our collection as the largest manufactures. The remaining group con sists of medium players and quantitatively marginal manufacturers. © The real manufactures (the ones listed in blue) take 35%, the thcwche producers 65% (listed in red). A number of factories not only had a brand of their own (e.g. G.W.Co. with Helvetia) but made movements for etahlissrnrs as well (e.g. Record for Patria), these are listed in black. Top segment brands like Patek Philippe, Audemars Piguet, Jaeger le Coultre, Vachero n & Constantin and IWC have not been included, as we never came across these brands and even from the literature we were unable to discover whether these manufacturers ever produced 13 1" movem ents at all. W e only managed to include an Aegler/Rebberg!Rolex. FABR/QUE # CY'v!i\ 18 12 l'v!OV,\DO Bl.11'1.'" ET ECTA T.O'\GTNES REVCE OM!.'GA BUJ OVA ET ECTTOJ\ ETERNA ORIS Zl.'NlTll 09 08 08 04 03 02 02 02 02 02 G.W.Co 14 MARVT'l lA='C:O Rf CORD PllLNlX 08 AS j-Q l'lll' AM DAMAS 29 19 sov:rnoz l\l.'LL'\ SFG E W RE 1'1AIRE E CORTERERT FH KURTH tvL\ lRL 0 Rff\BERG HP 1N V1CTA LWlNA tvL\NZO Nl M ONTTl .lfR RODE AN<h T OT A L 04 03 03 06 06 05 05 01 01 02 02 02 02 02 01 01 01 01 01 01 07 243 69 © w w e .d at ur er lit en hr .u w lv!OVEMENT 1DENTTFTCATTON DATA RASE l\o 01 a lvlanulact urer A. Michel S.A., fabrique d'ebauches, Grenchen Calibre tnie 220 Manufacturer's brand name AM Serial number at ur .d e Bi\SE PLATE 29.5 mm Dial fixation top screws Case filling diameter 29.1 mm No. of setting wheels 1 Iland selling by lever 4.4 mm Settmg mechanics Inscriptions logo type 4 lit Height er full diameter savoneu e en Orientation lnsc1iptions SWISS MADU3 .u Grouping hr COCKS & BRIDGES Manufacturer's brand mark © RESOURCcS 01-' llJl::iN IW!CAI ION Type of click spnng w 12-08 CCW w Position of pallet l"ork cock w Position of click pivot Catalogue/book reference Jobin/Paulson {) , l l d< 1-3-1 02 external t Ill ( Ill lt l r mi r RI'.tv1ARKS setting lever spring patented: No 73212 (information from Mr Urs RothKaspar, C H-Kerzers) 103 lv!OVEMENT 1DENTTFTCATTON DATA RASE l\o Manulacturer A. Schilcl S.A., Pabrique d'ebauches, Grenchen Calibre type 137 Senal number 63 Manufacturer"s brand name AS at ur .d e Bi\SE PLATE 29.5 mm Dial fixation top screws Case filling diameter 29.0 mm No. of setting \Vheels 1 Hand setting by lever 4.5 mm Setting mechanics Inscriptions serial no./logo type 4 savonette lit Height er Pull diameter en Orientation lnsc1iptions - 1-4 .u Grouping hr COCKS & BRIDGES Position of click pivot I(. ,t I I µ \.II ' · RI'.tv1ARKS - 106 · r c l l © lvlanufacr.urer's brand mark Type of click spnng w RESOURCcS 01-' llJl::iN IW!CAI ION w 12-08 CCW external w Position of pallet l"ork cock 02 {) , l l d< <..h F l 11 p r r © w w w e at ur .d er lit en hr .u © w w w e at ur .d er lit en hr .u © de ra tu r. lit e en hr .u w w w