Riga Greenhouse Roof Window Assembly Rev. 2

http://www.youtube.com/watch?v=Y7eW9flQJbo

possible mechanism to use, although id have to substitute the temperature control

OR

http://www.youtube.com/watch?v=mrM3QDo71-8
windcreen wiper motor

If i have to use an electric motor the set up and system is explained here:
http://www.youtube.com/watch?v=X4stWDy-bPA