Skip to main content

Historical Technology Books: A practical course in horology (1944) by Harold Caleb Kelly - 17 in a series

By
Technology isn't just computers, networks and phones. Technology has always been part of the human experience. All of our ancestors have looked for ways to help them survive and do less work for more gain. Archive.org has a host of old technology books (from mid-19th to mid-20th Century) available in many formats and on a host of topics. Many of the technologies discussed within these books are being put to use again these days in the back to the land" and homesteading movements. You might even find something that could address one of your own garden or farm issues but has been lost to time and history. Enjoy! --Douglas
Historical Technology Books: A practical course in horology (1944)  by Harold Caleb Kelly - 17 in a series
 
It is difficult to even imagine what life was like before the invention of the clock and — some might say — the invention of time itself. Life changed dramatically when our days became measured in hours and minutes instead of sunrises to sunsets. Our ability to safely travel the globe relied on accurate time keeping — which wasn’t truly available until the 1800’s. Timekeeping is on the level and scale of other, major, life-changing, technologies like the steam engine, railroad and the external combustion engine.   — Douglas

PREFACE

The art of horology unquestionably ranks among the most wonderful of the mechanical arts. One can only marvel at the diminutive size of the modern wrist watch and the accuracy of the machines by which the duplicate parts are made.

Production and improved manufacturing methods have also changed the repairman's approach to horology. Duplicate parts are available, so the horologist is seldom called upon to make a part. However, since the sizes of watches have been reduced, new tools and improved methods are essential to good workmanship. One must develop a greater skill in fitting staffs to small, uncut balance wheels, in adjusting small escapements, and in handling the new, alloyed balance springs.

The purpose of this book is to present the fundamentals of horology, both in theory and practice. Part 1 deals with wheel work and gearing, which involve the work of calculating the number of teeth of missing wheels and pinions and in determining their proper diameters. Principles of escapement design and an analysis of the balance and spring are given considerable space. Part 2 treats repair methods, in which the making of a balance staff and the adjustment of the escapement are given more than the usual space allotted to these subjects. Part 3 is concerned with the adjustments to position, isochronism, and temperature, factors that may be called the finishing touches of the horological profession.

* A portion of each sale from Amazon.com directly supports our blogs
** Many of these books may be available from your local library. Check it out!
† Available from the LA Public Library

Labels:

Comments

Post a Comment

Popular posts from this blog

Microsoft release Outlook.com email services to replace Hotmail

By
Today Microsoft released its new email service Outlook.com to replace its Hotmail brand. This new streamlined Metro interface design looks good and functions well so far. You can use your existing Microsoft account to log in and then choose an email alias (i.e. douglaswelch@outlook.com) for your new email address. Here are several articles that discuss Outlook.com... Goodbye, Hotmail; Hello, Outlook.com [REVIEW]  Outlook Is a Completely New, Feature-Filled Webmail Service from Microsoft Go Get Your @Outlook Email Address Quick Before Someone Else Does I will post links to more articles and reviews as they appear.
Post a Comment
Read more

Shared calendars are one part of an organized family

By
by Douglas E. Welch , techiq@welchwrite.com 206-338-5832 Reader/Listener Line As a parent with a school-age child, I often hear other parents bemoaning their disorganized existence. Along with the busy schedules of two working parents you might have art classes, karate classes, Little League, soccer and more. Add in more than one kid and organizing your life can quickly become a nightmare. This is exactly why one of my most important organizing devices is a shared calendar that reflects all the activities and events for everyone in the household...and I do mean everything. If someone -- is required to be somewhere -- at sometime, it goes into the calendar. If we are given a calendar that reflects all the events for a particular activity (say, Little League), all these events immediately go into the calendar, along with notations on whether we are providing the team snack, working in the snack bar, etc. Even events that occur anytime during the day, like family birthdays, and other rem...
Post a Comment
Read more

Google Docs adds templates

By
I have started to move away from using Microsoft Office (Word, Excel, Powerpoint, etc) in favor of online tools like Google Docs . Even as a computer consultant, I find that I use probably less than 10% of the features in any of these projects. One feature I really like in Google Docs is the easy, online file sharing that also allows you to edit simultaneously with someone else. Today, Google Docs added some templates including business cards, brochures and more. At the moment, it looks like they are rolling out this feature over time, so you might not yet see the templates on your account. When available, you will find the templates under the New... menu item. From Open Loops ... Today, Google quietly rolled out a new feature for their Google Docs Applications: Templates! It's so new that it isn't even listed on the new features page at this time. When one opens their Google Docs account and chooses to start a new document, a new "From Template..." command is pre...
1 comment
Read more