The Watchmakers' Hand-Book

Crafts, Hobbies & Home

Saunier, Claudius

Antiques & Collectibles

Franklin Classics

The Watchmaker's Hand Book: Intended As A Workshop Companion For Those Engaged In Watch-making And Allied Mechanical Arts

History

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1887 edition. Excerpt: ...perfectly made, was shown at the Exhibition of 1855 by a modest but very clever watchmaker, M. Sylvain Mairet of Locle. Escapement with Ratchet Teeth. 742.--In a small work on watchmaking we readj "Pointed teeth are best suited to the lever escapement because they traverse a longer impulse plane and therefore exert a greater force on the balance." This assertion is utterly gratuitous. For consider an impulse plane nod (fig. 49): the pointed tooth b will impel it backwards through the interval d h and in doing so will traverse the full extent, n o d, of the plane. Now assume half of the plane to be on the tooth and half on the pallet so that we have the two inclines n i and i d. The corner i of the tooth will traverse the incline i d, and the corner d of the pallet will be driven backwards over the plane n i. On the whole the displacement of the pallet will remain the same (A d), and it will be just as if a pointed tooth successively passed over the two planes n i andz d joined end to end, so that in fact their total length would be slightly in excess of that of the original plane nod. 743.--An escapement with pointed or ratchet teeth has the following objections and advantages: Both the pitch with the locking face and the drop are very nearly doubled; there is therefore an appreciable increase in the resistance opposed to unlocking, especially when the oil is at all thick. Out of the 10 through which the pallet moves, a greater proportion is expended in the unlocking (705). Lastly the fine pointed tooth must be made of brass, it is liable to wear and distortion and is ill-adapted for retaining oil, which must be applied in very small quantity. On the other hand its advantages consist in: (1) the pallets having double width so that a...

Treatise on modern horology in theory and practice (Foyles standard works)

Science & Math

Physics

C. T. Branford Co

Legare Street Press

Le Temps: Ses Divisions Principales, Part 1-6 (1858) (French Edition)

Literature & Fiction

Literary

Kessinger Publishing

Kessinger Publishing, LLC

This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book.

Nabu Press

This is a reproduction of a book published before 1923. This book may have occasional imperfections  such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact,  or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections,  have elected to bring it back into print as part of our continuing commitment to the preservation of printed works  worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book.    ++++  The below data was compiled from various identification fields in the bibliographic record of this title. This data is provided as an additional tool in helping to ensure edition identification:  ++++   The Watchmaker's Hand Book: Intended As A Workshop Companion For Those Engaged In Watch-making And Allied Mechanical Arts illustrated Claudius Saunier, George Henry Abbott Hazlitt G. K. Hazlitt & co., 1894 Antiques & Collectibles; Clocks & Watches; Antiques & Collectibles / Clocks & Watches; Antiques & Collectibles / Reference; Clock and watch making

The Watchmaker's Hand Book: Intended As A Workshop Companion For Those Engaged In Watch-making And Allied Mechanical Arts...

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