"Push Key Round Padlocks (Pancake) - Research"

The locks in this category require further research.
 

Click to Enlarge Image "THE DAYTON MFG CO PAT APR 17-83" - No Pins. Key retaining mechanism. Mfg by: Dayton Mfg. Co., Dayton Ohio.  (R-100). Philip Yoe and John Kirby Jr. Patent # 275970. More...
"Courtesy Mike Pitman"
2974
Click to Enlarge Image "ECLIPSE 6LEVER" - No Pins - Hinged Shackle. Brass case. Hinged steel shackle.  (R-105). 4579