Antique pocket watch Clock making book repair restore

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Item Description

This Ebay listing is for the sale of a CD ROM publication of a collection of Watch and Clock Escapement publications originally published in 1904

A complete study in theory and practice of the lever, cylinder and chronometer escapements.

 You can read the detailed content pages further down this page.

Sample images from this CD

Contains 164 pages in easy to view and print PDF file format. (If you are not familiar with PDF files, you will need to download a free pdf file reader from adobe .com in order to read a pdf file.)

Contents

Chapter I.
THE DETACHED LEVER ESCAPEMENT
Making a pair of dividers.
Delineating an escape wheel.
Pallet-and-fork action.
Establishing the center of pallet staff.
Laying out escape-wheel teeth.
How motion is obtained
Pallet-and-fork action.
Methods of making good drawing instruments.
Spring and adjusting screw for drawing instruments.
Consideration of detached lever escapement resumed.
The necessity for good instruments.
Delineating the exit pallet.
Delineating circular pallets.
The amount of lock.
Advantage of making large drawings.
The club-tooth lever escapement.
Relations of the several parts
Locating the inner angle of the exit pallet
Club-tooth lever with equidistant locking faces
Angular motion of escape wheel determined
A departure from former practices
An apt illustration
Locating the outer angle of the impulse planes
Making an escapement model
Making the bridges
Imitation rubies for capping the top pivots
Profitable for explaining to a customer
Fancy screwheads
How to do acid frosting
How to prepare the surface
How to etch the surface
To temper and polish steel
How flat steel polishing is done
Smoothing and polishing
Knowledge that is most essential
What a workman should know to repair a watch
Educate the eye to judge of angular as well as linear extent
Fork and roller action.
How to find the roller diameter from the length of the fork
Why thirty degrees of roller action is about right
How to set a fork and roller action right
How to delineate a fork and roller
To determine the size of a jewel pin
The theory of the fork action
How to delineate the prongs of a lever fork
The proper length of a lever
How to delineate the safety action.
Restrict the frictional surfaces
Be fearless in repairs, if sure you are right
Study of an escapement error
How to adjust the pallets to match the fork
How to set a jewel pin as it should be
About jewel-pin setters
How to make an angle-measuring device
How the angular motion is measured
Testing lock and drop with our new device
A few experiments with our angle-measuring device
How to measure the angular motion of an escape wheel
How a balance controls the timekeeping of a watch.
How barometric pressure affects a watch
Proportions of the double-roller escapement
Theoretical action of double roller considered
How to design a double-roller escapement
How the guard point is made
More about tangential lockings
Correct drawing required
Neutral lockings
Practical hints for lever escapements
The perfected lever escapement
When power is lost in the lever escapement
About the club-tooth escapement
How to locate the pallet action
Drawing an escapement to show angular motion
Practical problems in the lever escapement
To draw a pallet in any position
Higher mathematics applied to the lever escapement
How the basis for close measurements is obtained
Make a large escapement model
Practical lessons with fork and pallet action
Quiz problems in the detached lever escapement
How to measure escapement angles
Determination of "right" methods
Escapements compared
How to set pallet stones
How to make an escapement matching tool
Details of fitting up escapement matcher
Escapement matching device described
How to set pallet stones.

Chapter II.
THE CYLINDER ESCAPEMENT
Essential parts of the cylinder escapement
Drawing the cylinder escapement
Advantages gained in shaping
The outer diameter of the cylinder
Drawing a cylinder
The cylinder proper considered
Why the angular extent is increased
Making a working model
Proper shape of cylinder lips
Delineating an escape-wheel tooth while in action

Chapter III.
THE CHRONOMETER ESCAPEMENT
Advantages of the chronometer
Frictional escapements in high favor
Faults in the detent escapement.
Antagonistic influences
Factors that must be considered
Functions of the detent
Obtaining the best conditions
Important considerations
Decisions arrived at by experience
Locating the center of the balance staff
How to set the discharging jewel
A good form of locking stone
The detent spring
Details of construction
Original designing of the escapement
Tangential lockings
The drop and draw considered
Fitting up of the foot


Chapter IV.
HISTORY OF ESCAPEMENTS
Escapement the most essential part
The verge escapement
Oldest arrangement of a crown-wheel escapement
Galileo's experiments
The attainment of isochronism by huygens
Another two-pendulum escapement
Correcting irregularities in the verge escapement
An invention that created much enthusiasm
Ingenious attempts at solution of a difficult problem
Various modifications
The gable escapement

Chapter V.
PUTTING IN A NEW CYLINDER
Escape-wheel teeth vs. Cylinder
Measuring the heights
Turning the pivots
How to use a cement chuck
A convenient tool for length measurement
Removing the lathe cement


Rocketbrain's Review
 

Horology?

What on earth is "horology" you might ask?

An Escapement? This book will teach me how to make escapements?

Escape from what?

OK, for the uninitiated and innocent, here are some simple definitions:

Horology
- is the Art, technology, and science of timekeeping and timekeeping tools or instruments.
- is the name of the study derived from the Latin language word "hora", meaning "hour", but can be taken commonly in Latin to also mean "generic time" or "season" (Horae).
- thus horology is the study or application of any method of understanding, measuring, or keeping time and a horologist is an individual who is involved in the practice of the self same trade or profession.

Escapement
- is a gear system with a set of pawls (pointy arms) that alternately push and stop the gear angles and gear from moving to push the gear "round and round" at a pace that exactly matches the rate of movement of the connected pawls. (they are usually stuck together in a pivoting arc piece). In short, an "escapement" is a way to convert back and forth movement that is regular (like a pendulum) into round and round movement (like a gear on a shaft) so that gears can be used to make a timepiece such as a watch or clock or timer.
- the first known escapement system was made in Korea about 10,000 bc and recorded as a design on wooden printing blocks used to make what was apparently the first "horology manual". crude and water driven, it was a simple timepiece of wood that was probably quickly worn out and accurate to less than 20 minutes in a day at best. The next recorded escapement was in about 700 AD in China by a buddhist Monk and a cooperating govt official. This method of movement conversion has been around a while.

OK OK ... so now that we are past the trivial definitions and the basics, presumably if you are still with us, you have a fascination with clocks and watches and want to truly understand how escapements work and how to refine, design, and repair them with skill and inspiration.

This is the book for you.

In detailed explanations and drawings showing the geometry of each design type of escapement we learn how they work, what the specific geometry of each is, and the advantages and disadvantages of each.

Simply put, if you are a horologist or hobbyist who loves clocks and watches, and wants to truly understand the workings, this book is a must have.

Having taught horology classes and advanced time classes (standards and atomic time etc.) this book was endlessly fascinating to me ... that such simple mechanisms have been evolved to deliver time with a precision of fractions of a second per day, is as much amazing art as it is science or engineering.

Get this one, it deserves a place in your life and CD ROM library.

 

User friendly PDF file format, the CD ROM is Microsoft Windows as well as MAC compatible.

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