The British Horological Institute Limited
Index of Hints and Tips
Know Your Terminology - Wrist Watches
When trying to explain about a wrist watch to other repairers and supply houses, it is essential that you use the correct terminology. To help you the following diagrams are cutaways of a very simple type of wrist watch.
Going Train
The 'Going train' is the set of gears that transmit the power from the mainspring to the escapement. This in turn drives the 'Motion Work' that turns the hands.
1 Click Spring
2 Barrel Arbor
3 Winding Wheel
4 Winding Wheel Screw
5 Crown Wheel Core
6 Crown Wheel Screw
7 Centre Wheel Pinion
8 Centre Wheel
9 Balance Staff |
10 Balance Spring
11 Balance
12 Stud
13 Balance Spring Collet
14 Roller
15 Pallet Frame
16 Exit Pallet Stone
17 Pallet Staff
18 Entry Pallet Stone
19 Escape Wheel |
20 Escape Wheel Pinion
21 Fourth Wheel Pinion
22 Fourth Wheel
23 Third Wheel Pinion
24 Third Wheel
25 Mainspring Barrel
26 Mainspring
27 Click Screw
28 Click |
Motion Work and Winding Gear
.gif)
1 End Piece
2 Lower End Piece Screw
3 Keyless Cover Screw
4 Keyless Cover
5 Clutch Lever |
6 Clutch Lever Spring
7 Setting Lever
8 Setting Lever Screw
9 Winding Stem
10 Winding pinion |
11 Clutch
12 Intermediate Wheel
13 Minute Wheel
14 Cannon Pinion
15 Hour Wheel |
Index of Hints and Tips |
