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Trapping also relates to the use of traps to catch animals for a variety of other purposes, most usually for food or pest control.

Animal Trap

Trapping also relates to the use of traps to catch animals for a variety of other purposes, most usually…

a rat trap is a trap designed to catch rats.

Rat Trap

a rat trap is a trap designed to catch rats.

A turbine that uses moving water to make it work. They are used in hydroelectricity plants.

Hydraulic Turbine

A turbine that uses moving water to make it work. They are used in hydroelectricity plants.

An 'arm' inside a typewriter with a character on the end of it. There are generally two characters per typebar, one which will be printed if the corresponding key is struck by itself, the other of which will be printed if the corresponding key is struck while the shift key is held.

Detachable Typebar

An 'arm' inside a typewriter with a character on the end of it. There are generally two characters per…

A device such as a fan that introduces fresh air or expels foul air

Early Design Ventilator

A device such as a fan that introduces fresh air or expels foul air

A board having a corrugated surface on which clothes can be rubbed in the process of laundering.

Tall Washboard

A board having a corrugated surface on which clothes can be rubbed in the process of laundering.

"Fifth wheel, a horizontal plate, bent to form a whole or part of a circle, placed on the forward axle of a carriage. It is designed to support the fore part of the body while allowing it to turn freely in a horizontal plane." Today, the fifth wheel is used in coupling of trailers and towing trucks. -Whitney, 1911

Fifth Wheel

"Fifth wheel, a horizontal plate, bent to form a whole or part of a circle, placed on the forward axle…

"Fifth wheel, a horizontal plate, bent to form a whole or part of a circle, placed on the forward axle of a carriage. It is designed to support the fore part of the body while allowing it to turn freely in a horizontal plane." Today, the fifth wheel is used in coupling of trailers and towing trucks. -Whitney, 1911

Fifth Wheel

"Fifth wheel, a horizontal plate, bent to form a whole or part of a circle, placed on the forward axle…

The Wimshurst Machine is an electrostatic device to generate high voltages. "It consists of two circular glass plates, mounted on a common spindle, and capable of rotation in opposite directions with equal speeds. Each plate carries twelve or sixteen strips of thin sheet-metal, fixed radially at regular intervals apart ... At the extremities of the horizontal diameter of the plates the main conductors are placed, insulated on glass or vulcanite pillars." -Hazeltine, 1894

Wimshurst Machine

The Wimshurst Machine is an electrostatic device to generate high voltages. "It consists of two circular…