Hammond Synchronous Clocks Maintenance and Repair Book Postal Telegraph Gregory

The repairs and information in this book can be applied to many different case styles of Hammond clock. If you see the back side of your clock in the pictures above this book can help!

The focus of this book is on the most common repairs: cleaning, oiling and replacing cords. Over 100 photographs show the jobs and procedures that you can easily and safely accomplish to maintain and increase the value of your Hammond clock collection. No special tools required for most of the repairs and maintenance shown in this book. 

This book covers how to identify and perform maintenance on Hammond synchronous clock motors in the two most common types, open rotor and sealed rotor. Most often these clocks simply need cleaning and fresh oil to continue running. You will be able to apply the procedures in this book to many styles of Hammond Clock because while the case styles are different, most Hammond clocks employ one of two types of motors, open rotor or sealed rotor synchronous.

Another kind of Hammond motor is Bichronous, an early electric and spring driven clock motor, often marked as "Bichronous" on the case or motor. Bichronous clocks have springs under high tension and are more complex than the simple and common synchronous motor shown above. Repairs to Hammond Bichronous clocks are not covered in this book.

Chapter 1 Introduction and Identification
Chapter 2 Dis-assembly of the Postal Telegraph Wall Clock with Open Rotor Synchronous Motor
Chapter 3 Replacement of the Power Cord
Chapter 4 Cleaning the Open Rotor Movement
Chapter 5 Oiling the Open Rotor Movement
Chapter 6 Reassembly of the Postal Telegraph Wall Clock
Chapter 7 Complete disassembly and reassembly of the Gregory Desk Clock with Sealed Rotor Synchronous Motor
Chapter 8 Sealed Rotor Treatment
Bibliography

This book shows with photographs exactly how to:

• Identify Hammond Synchronous Motored Clocks
• Dis-assemble these clocks without damage
• Replace the power cord
  
• Clean the gears
• Apply fresh oil
  
• Put everything back together in the correct order

Many detailed before and after photos plus step by step instructions make your Hammond clock repair projects easy and fun!