Knots

A knot is a method for fastening or securing linear material such as rope by tying or interweaving. See the articles/galleries below for instructions on tying various types of knots, and see wikipedia:Knot for more information.

Components

Hitch: A knot used to attach a rope to a fixed object.

Bight
The center part of a length of rop as opposed to the ends.

• A bight: is any portion of the rope, string, or yarn between its two ends.
• The bight: is a U-shaped loop used in making a knot or stitch. Many knots, such as the Bowline can be tied in either the end or the bight.

Elbow
Two crossing points created by an extra twist in a loop.
Loop
A full circle formed by passing the working end over itself.
Bend
A knot uniting two lines often joining two ends of rope together.
Decorative
A knot exhibiting patterns, often binding to itself, and is neato.

Notes

• Different knots have different applications.
• A rope containing a knot is weaker than an unknotted rope, because the loops of the knot impose uneven stresses upon the rope fibers. The tighter the knot, the more uneven the stress.

Galleries

These galleries are listed individualy in the articles section below. These galleries may eventually become to numerous, in which case only galleries in articles will be linked.

Why

The 'washers' on the rope-pump need to be made from a material that is
cheap and easily available. They also need to be easily repairable or replaceable.
This is neseccary when whashers crack off or wear over time.
Another priority is to have the 'washers' made from a material and in such a way that
their construction and repair can and will be done by women. This is because it is usually
the women's task to collect water, and so the water pumps will be mainly used by women.
The design of the 'washer' should therefore be a design that is 'appropriate for women'.
The 'washer' should fit into the pump pipe loosely; it needs to be securely attached to the
pump rope and it needs to have a system of construction that is simple and easy to explain and learn.

How

To make rope elements, one to two meters long and ending in a knot that loosely fits the pipe
is an alternative for rubber or plastic washers slid over the pump rope or knots made at intervals
in the pump rope . It would be women's work to make such rope elements in a handicraft way like
Macramé. When hauling water, women can keep track of the wear of such rope elements and replace
one element when necessary. This replacement can be done in a few minutes, there is no need to
take the pump out of service.
The picture shows a complex piece of macrame work. In a similar way the rope emement should
be made: thin rope, woven into a sting, a loop at one end and a thick knot at hte other end.
Each loop can be attached to the knot of the next rope element by inserting it into an opening in the knot.
There the loop can be fastened.

Where this page came from

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