Timeline of Ag Equipment 'Firsts'
Eli Whitney develops the first hand-powered cotton gin on the General Nathaniel Greene plantation near Savannah, Ga. The gin separates seeds, hulls and other unwanted …
hand operated electricity generator science project
Through the hand-operated electricity generator science project, you've successfully illustrated how mechanical energy can be transformed into electrical energy …
The History of the Hand Pump
The hand pump is a remarkable invention that played a crucial role in early America and continues to be used by off-grid enthusiasts today. Let's dive into the story …
The History of Hardware Tools
Artisans and builders use hardware hand tools to carry out manual labor tasks such as chopping, chiseling, sawing, filing and forging. While the date of the earliest …
100 Years of Innovation: History of the Electric Drill
In 1924, A.H. Peterson developed the Hole-Shooter, a lightweight, portable drill that a user could operate with one hand. After fire destroyed Peterson's facility, Milwaukee Electric …
How do hand fans work?
With electric fans there's no problem since the agent doing the work isn't the person, but with hand fans, the operator is effectively heating up one part of his body to …
How to Build a Water Hand Pump
This hand pump can be inserted into an existing well to obtain water during a period of prolonged loss of electrical power. While high quality commercial hand pumps …
History of Power Tools – A Timeline of Innovation
A very important year in power tools history. Black & Decker initiated a revolution in power tools industry by introducing the world's first cordless electric drill powered by Ni-Cd …
Computing and the Manhattan Project
A race was organized between the IBM machines and the hand-operated computers. Although the two initially kept pace, after about a day of work the hand …
(PDF) Design and Development of Hand Operated Maize
Singh et al. 2014 designed, developed and evaluated a hand operated maize dehusker-sheller with output capacity of about 60 kg/h at a feed rate of 80 kg un …