These two barrels are hinged and open like a clam to expose a double hinged worm. The upper part of the worm is held in place by a pin passing through one half of the clamshell. It is opened to unfold the worm and closed to use the barrel as the handle. On the right is an eighteenth century silver version.
 Vault 1 |
Vault 2 |
Vault 3 |
©2000 Donald A. Bull