diff --git a/README.md b/README.md
index b711288..06eaf1c 100644
--- a/README.md
+++ b/README.md
@@ -28,6 +28,13 @@ __python > 3 (for python2 use branch py2)__
 
 ### Crown-Gear
 
+### Worm-Gear
+
+### Timing-Gear
+
+### Latern-Gear
+![latern-gear](examples/latern-gear.png)
+
 ---------------------------
 
 ## Installation