class II lever
2, long bamboo or metal levers are used as treadles. The fulcrum is located at the far end of the lever. This is a class II lever, where the output force is in between the input force and the fulcrum.
What are treadle pumps powered by?
They are powered by human effort, with the upper body being stationary and the legs and feet stepping up and down on treadles that are connected to two small piston pumps.
When was the treadle pump invented?
The treadle pump was designed by the Norwegian engineer, Gunnar Barnes in the 1970’s. It was first developed and used for irrigation in Bangladesh in the late 1970’s. In the 1980s, International Development Enterprise (IDE) initiated a campaign to market the pumps to smallholder farmers.
Who invented treadle pump?
engineer Gunnar Barnes
Perhaps the most ubiquitous of these is the foot-powered treadle pump, invented by the Norwegian engineer Gunnar Barnes in the 1970s ( Bolay et al., 2014) and first introduced in Bangladesh ( Orr et al., 1991 ).
How does a treadle pump work?
A treadle pump comprises a cylinder fitted with a piston and some means of pushing the piston up and down (Figure 1). When the piston is raised again, it lifts this water until it pours out over the rim of the cylinder and into an irrigation channel or tank.
How does a rope pump work?
The Rope Pump Principle: Pulling the rope is done by turning the pulley wheel, placed at the top. The friction between the pulley-wheel (made of a car tyre) and the rope, pulls the pistons through the rising main pipe and lifts the water to the spout.
What is the definition of the word treadle?
: a swiveling or lever device pressed by the foot to drive a machine. treadle. verb. treadled; treadling\ ˈtred-liŋ , ˈtre-dᵊl-iŋ \
What is linear pump?
Linear pumps use electromagnetic force to move the piston or diaphragm up and down, and pump the air or liquid.
What is needle bar?
Definition of needlebar : a bar on a sewing or knitting machine for holding the needle or needles.
How does a treadle work?
A treadle is operated by pressing down on its pedal with one or both feet, causing a rocking motion. This movement can then be stored as rotational motion via a crankshaft driving a flywheel.
What is a treadle pump?
The treadle pump is a foot-powered water pump widely used in Asia and spreading in Africa. It consists of two metal cylinders with pistons that are operated by a natural walking motion on two treadles. There are several variations of the treadle pump:
What is a Malawi treadle pump?
The Malawi treadle pump is a high capacity treadle pump designed to lift water from shallow wells & surface sources. Photo: S.K. Industries. The treadle pump is a foot-powered water pump widely used in Asia and spreading in Africa. It consists of two metal cylinders with pistons that are operated by a natural walking motion on two treadles.
How deep can a treadle pump pump water?
The treadle pump can be used on small farms which draw irrigation water from 1-7 m deep. A treadle pump can pump around 100 litres / min from 4 meters depth. Because a treadle pump is a suction pump, the depth from which water can be drawn is limited to 7m.
What is the history of the treadle pump workshop?
The first of the workshops was the North Bengal Agriculture Workshop in Lalmonirhat (NBAW), started in 1981. The fourth workshop was that of Mr. Narendra Nath Deb. Mr. Deb was already making pumps of his own design, but contracted in 1984 for his workers to be trained in making the treadle pump.
