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March 23, 2019

Motorcycle For People Who Are In Wheelchairs

A wheelchair is a chair with wheels, designed to be a replacement for walking. The device comes in variations where it is propelled by motors or by the seated occupant turning the rear wheels by hand. Often there are handles behind the seat for someone else to do the pushing. Wheelchairs are used by people for whom walking is difficult or impossible due to illness (physiological or physical), injury, or disability. People with both sitting and walking disability often need to use a wheelbench.

The earliest record of wheelchairs dates back to the 6th century, as an inscription found on a stone slate in China. Later dates relate to Europeans using this technology during the German Renaissance.

The invalid carriage or Bath Chair seems to date from around 1760.

Harry Jennings and his disabled friend Herbert Everest, both mechanical engineers, invented the first lightweight, steel, collapsible wheelchair in 1933. Mr Everest had broken his back in a mining accident.

The two saw the business potential of the invention and went on to become the first mass-manufacturers of wheelchairs: Everest and Jennings. Their “x-brace” design is still in common use, albeit with updated materials and other improvements.

A basic manual wheelchair incorporates a seat, foot rests and four wheels: two, caster wheels at the front and two large wheels at the back. The two larger wheels in the back usually have hand rims; two metal or plastic circles approximately 3/4″ thick. The hand rims have a diameter normally only slightly smaller than the wheels they are attached to.

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