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. The following standard publications are kept constantly on hand and for sale at the office of The Watchmaker AND Metalworker, 149 State street-, Chicago, 111.: Prico. Price, PRIZE ESSAY ON THE BALANCE SI'E NG AND ITS ISOCHRON- folio 10x15, containing neai-ly 70 designs, produced in their natural '''5 AL ADJUSTMENTS tBai-onesa Burde.t Coutta' Prize), by Moritz colors ®1 75 '2-J MODERN DESIGNS OF JEWELUY. Plain lithogl-iipba 1 Tm miar.h ; $1 Nine large DUiEC'L'ORY of the Watcliand Material Him-ifaoturera, Jewelers auil MODERN ALPHABETS. Desigued by Martin Gerluch. types styles 1 75 Musical Box Makers iu Switzerlaud CIO. 000 addi-esaes) 1 ^5 sheets of .Aiijhabets, iu various ami TREATISE ON MODERN HOROLOG'K IN THEORY AND PRAC- ELECTRO METALLURGY PRACTICALLY TKEATED. By Alex- ,.".Jpr with TICE. By Claudius Saunier. 860 pafes, 78 woodcuts and 20 baud- Watt, P.R. S- S. A. 7th edition, enlai'ged and revised, a''ditioual illustrations 1 50 colored copper plates. Half calf ..._. 15 00 A TREATISE ON WATCH-WORK, PV.^T AND PRESENT. By tbe Notiz Kalender^fur Uhrmacher, 1873. Von M. Grossmanu. 1879 Rev. H. L. Neltbropp, M. A., F. S. A Illustrated 2 25 1880 THE WATCH AND CLOCKMAKERS' f l.\ND-BOOK. By P. J. Brit- ten. 4th Edition. Illustrated.. 1 50 1881 THE WATCHMAKERS' HAND-BOOK, By Cladius Saunier. Intend- 1882 POCKET DICTIONARY. Containing the technical U ed as a work-shop companion. 498 p mes, 27 wood cuts and 14 fold- HOROLOGICAL M. Grossmaun. ing copper plates 4 00 terms iu use in watch and clockmakiiig. By own edition (in English, German and French) 1 25 cv THE PE.ARL. A universal organ of deiigu for Gold and Silversmiths, Author's J. Parish Stelle. 60 Engravers, Chasers, Emimelors, fifimpeis, etc. By Martin Ger- AMERICAN WATCHMAKER AND JEWELER. By \^ Horizontal. Duplex, Lever and Chronometer laob, Vienna. Twelve parts comi Ifcto a series. In portfolio 11x13. DRAWINGS of Verge, Britten S Per series 12 00 Escapements, on one large sheet. By P. J. PEARLS; with their Weights, We have several pakts left at 1 50 A TREATISE ON DIAMONDS AND Prices INDUSTRIAL MONOGRAMS. Edit-'.', by Martin Gerlach, Vienna. Sizes and Gebrauch Universally acknowledged to be tue best and most complete work DAS REGULIREN DER UHREN fur den burgerlichen Grossmann 75 on monograms and monogramic .it signs 18 00 nebst TrabeUen von M. DIARY AND DIRECTORY for 1883.. MODERN DESIGNS OF JEWELR'i'. A Be!, of flvi sheets in Port- THE ENGLISH ALMANACK, Ten per cent. ofTfrom tliese prices to our regular subscribers. Postofflce or Express Money Cider. Any of the above wUl be sent on receipt of price. Amounts over one dollar should be remitted by either Address: JEWELERS' PUBLISHING CO., 14=9 State St., CliicaffO. www.amazon.com/shops/information4allwww.amazon.com/shops/information4all ESTj^BLISHKD 1873. TpE Wi^TCHMAl^EI^ ApD lV[ETi^LWORl(El(, A MONTHLV JOtTRNAL FOR WATCHMAKERS, JEWELERS, AND KINDRED ART INDUSTRIAL V ')RKERS. CONTAINING AN .(^VERAQE OP riFTY-SIX PAGES OF CHOICE READING MATTER AND ILLUSTRATIONS, HAS THE LARGEST CIR.CTJLA.TION OF ANY HOROLOGICAL JOTJRJSTAL IN THE "WORLD. THE BEST MEDIUmVoR ADVERTISERS. Rates Made J£uQ-wm on application. We claim and are prepared to prove that we have the largest list of bona fide prepaid subscribers of any horologioil journal in the world, in addi- tion to which we have heretofore regularly sent out from month to month a large number of copies gratuitously. ( 'c ucluding, however, that this course, while entailing heavy additional expense, was really unfair to those who pay for the paper, and of little practical benefit to the advertiser, eince what is obtained for nothing is liable to be valued accordiugly, we have determined to spend this money in snch manner as to directly benefit our patrons, and by the publication of a series of rare technical works to be given as premiumfl for subscription, or .^Id to our patrons at a nominal sum, eventually win to our support and place upon our subecriptiou books the name of every entenn-ising and iutell.^t ".t watchmaker and jeweler in the United States and Canada. The success which has attended the commencement of this policy by the publication of M. Grossmann's Prize Essay on the Detached Lever Escapement has far exceeded our expectations, and the liberal receipts o'f renewals and new subscriptions from every State and Territory in the Union as well as from all parts of Canada, are regarded by us as a complete and moat gratifying endorsement. SUBSCRIPTION PRICE. To any address within the United States $1.50 per year To any address outside the United States '..". 2.00 per year Single copy 15 » 1^1 I THE JEW^ELERS' PUBLISHING COMPANY, PXJBLISHKRS, 149 & IBl State street, • - - Chicago. NEW YORK OFFICE, 206 BROADWAY. FOREIGN OFFICES. H. BUSH, Hull, Englaod. E. DeWYTENBACK, Geneva, Suisse. HENRY F. GILLIG, 449 Strard W. C, LondOD, England. PRIZE ESSAY. A PRACTICAL AND THEORETICAL TREATISE ON- D/i(W» FOR WATCHES AND TIME- PIECES. BY :vLOi?.iTz; c3-i?>oss:m: .A-Ist i^t Translated from the German by C. C. PIERCE. ,x Revised, Corrected and Greatly Enlabged. yy TWENTY DIAGRAMS. CHICAGO: The Jewelers' Publishing Co. 1884. 5^^ .Q'' year 18S3. by Entered accovdinR to Act of Congress, in the C. C. PIEBCE, at Washington. in the Office of the Librarian of Congress, PREFACE |fi[E DETACHED LEVER ESCAPEMENT forms one of the most interesting and important subjects for study in the whole range of the horological art, and is at the same time one of the most ditticult to treat fully, com- preliensively, and in such manner as to be easily understood. Realizing the paramount impdrtance to the work- ing watchmalier of a thorough comprehension of tlie Detached Lever Escapement, the principles of its construc- tion, the relation of its several parts and the methods of calculation Ijy which its relative proportions may be varied to produce certain results, the subscribers to the Prize Fund of the British Horological Institute resolved, in tlie month of January, 1864, that its first prize should be offered for the best treatise on this sul)j(jct. This prize, of the sum of thirty guineas, or about $150, was promptly announced in a circular issued to the members of the Institute, and at once attracted the attention of Muritz Grossmanu, then as now a resident of Glashutte, Saxony, a mem- ber of the Institute of many years standing, and a careful, painstaking, scientific horologist. He at once determined to com- pete for th» prize, the more readily arriving at this determination from the fact that he had long contemplated writing a series of works upon the several branches of practical horology, embodying the result of his experience and study, and the reception accorded this essay would serve as an index to the measure of success likely to attend such publications. Having been awarded the prize, Mr. Grossmaun, encouraged by many eminent horologists, concluded to publish the work in book form, preparatory to which he greatly elaljorated many portions of it and added the chapters on "Measuring Instru- ments," and "Materials Employed in Making Lever Escapements," thus increasing it to nearly double its original size. In April, 1866, it was published, and immediately assumed the importance of a standard text-book upon the sub- ject of which it treats. It has been widely read and consulted in this country as well as in Europe, the superior intelligence of American watchmakers enabling them to readily understand the work and appreciate its value; but the high price at which it has hitherto been held by European publishers has greatly limited its sale, while the difficulty of procuring it in large quan- tities at any price has rendered it an unprofitable publication for dealers to handle. Satisfied that a large edition, published at such a price as to place it within the reach of every working watchmaker in the country, would be appreciated by the craft, we have at great expense prepared this premium edition, and offer it to our patrons at a nominal price, making it the first of a series of technical works which, when completed, will embrace everything extant in the field of literature calculated to aid the workman in the profitable and pleasant pursuit of his calling.