Harry Warner's Magic hen-house door closer!
http://www.savesaltspring.com/closed.jpg
Door in closed position
http://www.savesaltspring.com/open.jpg
Door in open position - note loop held between eye-hooks.
http://www.savesaltspring.com/switch.jpg
A close up of the pin-switch-solenoid device. The switch is MOST important to prevent burn out of the solenoid.
http://www.savesaltspring.com/diagram.jpg
A diagram of the workings.
Harry can be reached at: 250 653 4041; foinse at savesaltspring.com
Solenoids can be bought at: "Pacific Controls" in Victoria, BC Tel: 1 800 661 0173. They are fairly expensive!