Everand Logo

Welcome to Everand!

  • Discover millions of ebooks, audiobooks, and so much more with a free trial

    From $11.99/month after trial. Cancel anytime.

    An Analysis of the Lever Escapement
    An Analysis of the Lever Escapement
    An Analysis of the Lever Escapement
    Ebook85 pages1 hour

    An Analysis of the Lever Escapement

    By H. R. Playtner

    ()

    Read preview

    About this ebook

    "An Analysis of the Lever Escapement" by H. R. Playtner. Published by Good Press. Good Press publishes a wide range of titles that encompasses every genre. From well-known classics & literary fiction and non-fiction to forgotten−or yet undiscovered gems−of world literature, we issue the books that need to be read. Each Good Press edition has been meticulously edited and formatted to boost readability for all e-readers and devices. Our goal is to produce eBooks that are user-friendly and accessible to everyone in a high-quality digital format.
    LanguageEnglish
    PublisherGood Press
    Release dateDec 2, 2019
    ISBN4057664598837
    An Analysis of the Lever Escapement

    Related to An Analysis of the Lever Escapement

    Related ebooks

    Classics For You

    View More
    View More

    Related podcast episodes

    Related articles

    • UNLIMITED

      Causing A Tremor

      Nov 12, 2020

      Causing A Tremor
      8 min read

    • UNLIMITED

      Ask The experts

      Aug 11, 2022

      Q “When adjusting for fine tuning, would there be a degree of change to help make a determination in which direction a change may need to be made with fewer arrows? For example, if I change my plunger tension by +/-2 full turns, how many arrows would

      5 min read

    • UNLIMITED

      Have Watch, Will Travel

      Nov 22, 2021

      Have Watch, Will Travel
      6 min read

    • UNLIMITED

      Volume Control

      Sep 21, 2020

      Volume Control
      4 min read

    • UNLIMITED

      Spanners And Sockets

      Nov 27, 2020

      Spanners And Sockets
      11 min read

    • UNLIMITED

      Adding Curves to Your Toolkit

      Dec 18, 2019

      Adding Curves to Your Toolkit
      8 min read

    • UNLIMITED

      On The Ropes

      Sep 30, 2022

      On The Ropes
      8 min read

    • UNLIMITED

      Ask The Experts

      Dec 19, 2019

      Ask The Experts
      8 min read

    • UNLIMITED

      Choosing Clock Components

      Oct 7, 2020

      Choosing Clock Components
      3 min read

    • UNLIMITED

      See The Light

      Jul 22, 2022

      See The Light
      7 min read

    • UNLIMITED

      Opening Styles Unmasked

      Feb 20, 2024

      Opening Styles Unmasked
      5 min read

    • UNLIMITED

      Letters

      Jul 18, 2024

      Letters
      7 min read

    • UNLIMITED

      Elevation Evalution

      Oct 25, 2022

      Elevation Evalution
      7 min read

    • UNLIMITED

      Mechanics Of Good Casting

      Nov 10, 2023

      Mechanics Of Good Casting
      2 min read

    • UNLIMITED

      Leica PRS 5-30x56 riflescope

      Apr 1, 2020

      Leica PRS 5-30x56 riflescope
      9 min read

    • UNLIMITED

      Grime Time

      Oct 27, 2022

      What do you guys use to track rides and plan routes? On my road bike, I’ve got a Wahoo ELEMNT computer, and it’s pretty simple to create and upload routes to it using Komoot. But it seems that off-road trails are a lot harder to find and plan for. I’

      5 min read

    • UNLIMITED

      NUTS, BOLTS, SCREWS & SPANNERS

      Aug 17, 2023

      NUTS, BOLTS, SCREWS & SPANNERS
      4 min read

    • UNLIMITED

      WRECKED & Rated MBUK

      Dec 22, 2020

      It starts with a detailed product check in the workshop. Next we hit the trails… hard! We test in real riding conditions, incorporating feedback from multiple testers, and don’t stop until we have the complete picture. Our test team is made up of so

      9 min read

    • UNLIMITED

      Swing The Lead

      Aug 24, 2020

      Swing The Lead
      2 min read

    • UNLIMITED

      Lathe-ing Around

      Aug 12, 2018

      WORDS AND PHOTOS: RALPH FERRAND This month before describing what I did on the lathe, I feel it would be sensible not to assume that all the readers of CMM have lathes and know how to use them. I thought that it might be worthwhile providing a brief

      7 min read

    • UNLIMITED

      Easy And Accurate

      Sep 12, 2022

      Easy And Accurate
      1 min read

    Related categories

    Reviews for An Analysis of the Lever Escapement

    0 ratings

    0 ratings0 reviews

    What did you think?

    Tap to rate

    Review must be at least 10 words

      Book preview

      An Analysis of the Lever Escapement - H. R. Playtner

      H. R. Playtner

      An Analysis of the Lever Escapement

      Published by Good Press, 2022

      [email protected]

      EAN 4057664598837

      Table of Contents

      PREFACE.

      The Draw.

      The Lock.

      The Run.

      The Lift.

      The Center Distance of Wheel and Pallets.

      Equidistant vs. Circular.

      The Fork and Roller Action.

      The Safety Action.

      Specifications for Lever Escapement

      PREFACE.

      Table of Contents

      Before entering upon our subject proper, we think it advisable to explain a few points, simple though they are, which might cause confusion to some readers. Our experience has shown us that as soon as we use the words millimeter and degree, perplexity is the result. What is a millimeter? is propounded to us very often in the course of a year; nearly every new acquaintance is interested in having the metric system of measurement, together with the fine gauges used, explained to him.

      The metric system of measurement originated at the time of the French Revolution, in the latter part of the 18th century; its divisions are decimal, just the same as the system of currency we use in this country.

      A meter is the ten millionth part of an arc of the meridian of Paris, drawn from the equator to the north pole; as compared with the English inch there are 39³⁷⁰⁸⁄10000inches in a meter, and there are 25.4millimeters in an inch.

      The meter is sub-divided into decimeters, centimeters and millimeters; 1,000millimeters equal one meter; the millimeter is again divided into 10ths and the 10ths into 100ths of a millimeter, which could be continued indefinitely. The ¹⁄100millimeter is equal to the ¹⁄2540 of an inch. These are measurements with which the watchmaker is concerned. ¹⁄100millimeter, written .01mm., is the side shake for a balance pivot; multiply it by 2¼ and we obtain the thickness for the spring detent of a pocket chronometer, which is about ⅓ the thickness of a human hair.

      The metric system of measurement is used in all the watch factories of Switzerland, France, Germany, and the United States, and nearly all the lathe makers number their chucks by it, and some of them cut the leading screws on their slide rests to it.

      In any modern work on horology of value, the metric system is used. Skilled horologists use it on account of its convenience. The millimeter is a unit which can be handled on the small parts of a watch, whereas the inch must always be divided on anything smaller than the plates.

      Equally as fine gauges can be and are made for the inch as for the metric system, and the inch is decimally divided, but we require another decimal point to express our measurement.

      Metric gauges can now be procured from the material shops; they consist of tenth measures, verniers and micrometers; the finer ones of these come from Glashutte, and are the ones mentioned by Grossmann in his essay on the lever escapement. Any workman who has once used these instruments could not be persuaded to do without them.

      No one can comprehend the geometrical principles employed in escapements without a knowledge of angles and their measurements, therefore we deem it of sufficient importance to at least explain what a degree is, as we know for a fact, that young workmen especially, often fail to see how to apply it.

      Every circle, no matter how large or small it may be, contains 360°; a degree is therefore the 360th part of a circle; it is divided into minutes, seconds, thirds, etc.

      To measure the value of a degree of any circle, we must multiply the diameter of it by 3.1416, which gives us the circumference, and then divide it by 360. It will be seen that it depends on the size of that circle or its radius, as to the value of a degree in any actual measurement. To illustrate; a degree on the earth’s circumference measures 60 geographical miles, while measured on the circumference of an escape wheel 7.5mm. in diameter, or as they would designate it in a material shop, No.7½, it would be 7.5×3.1416÷360=.0655mm., which is equal to the breadth of an ordinary human hair; it is a degree in both cases, but the difference is very great, therefore a degree cannot be associated with any actual measurement until the radius of the circle is known. Degrees are generated from the center of the circle, and should be thought of as to ascension or direction and relative value. Circles contain four right angles of 90° each. Degrees are commonly measured by means of the protractor, although the ordinary instruments of this kind leave very much to be desired. The lines can be verified by means of the compass, which is a good practical method.

      It may also be well to give an explanation of some of the terms used.

      Drop equals the amount of freedom which is allowed for the action of pallets and wheel. See Z, Fig.1.

      Primitive or Geometrical Diameter.—In the ratchet tooth or English wheel, the primitive and real diameter are equal; in the club tooth wheel it means across the

      Enjoying the preview?
      Page 1 of 1