Design and Prototype Construction of a Dumbwaiter (Book Lift)

This work was done in response to the need of reducing drudgery in transporting books within the school lib rary. This is because book shelves run through the length of the buildings as well as reading tables. The arrangement of books are as such that the reader might need a book or material in another floor apart fro m the one where he is reading, this reduces drudgery for the library attendants to shuttle between floors to get required materials to readers. A machine otherwise called a du mbwaiter was thus designed having the capacity of lifting 100kg load. A prototype was constructed and the performance evaluated with three ser of loads. The floor selection was controlled making use of limit switches placed near each floor landing.