CHAPTER ONE
INTRODUCTION
This is a hand pushed simple machine consisting of a “V” shape body supported on two shafts, that arranged in a “V” shpae with handles at the end and a wheel and axle at the point. the wheel barrow is a level of the second class with the fulcrum at the axle, than the force applied at the handles and loads or resistance between the two in the body. It is also used by farmers, loads that is too heavy or bulky to be carried by hand and is similar to hand truckds used by warehouse men and industrial workers, except that the latter have two wheels. Moderns wheel barrows are made of a light metal, such as aluminum, and have a rubber five on the wheel. A two wheel machine for carrying garden materials is more property called garden cart.
The purpose of the production of this machine is to reduce, alleviate and probably eliminate the sufferins, time money, wastage of man power and more especially the need for technological break through and self reliance, which has been a major concern of the federal government.
Therefore, carrying of head pans of sand, grovel, concrete and heavy load on human heads has been a tiring problem in the society, from time immemorial especially towards our loco-parenthesis. To help eradicate those problems, this project at hand has delved into simplicities and the construction of this machine that can be used to carry different types of heavy load to any distance.
ORIGIN AND HISTORY
The origin and development of the barrow hold on important place in the history of invention, not because in itself it represent a major technological innovation, but because it clearly illustrates a phenomenon known as independent invention.
Thus, the wheel barrow has more than a single source of origin and was developed for different purposes.
The earliest form of wheel barrow was developed in china shortly before AD 200 and traditionally its design is attributed to a general in the imperial army, although this is probably more enough to suggest how it originated. The single wheel is large often three or four feet in diameter and usually has a dozen or more spokes. It is set between the shafts at a considerable distance from the front end of the barrow, while a boxing or wooden frame is built up form the shaft to encase the upper half of wheel.
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