basically U-shaped trays, the length being more than the width. They are held horizontally
in both hands so that the back or arch of the U is near the body. The fans have a maximum
depth at the back, gradually flattening into a horizontal surface in the front, so that
the grain can be poured out easily.
There are shallow and deep winnowing fans. The
former are made by stretching a mat within a rim made of bamboo splints. The maximum depth
is determined by the width of the strengthened rim, which is perpendicular to the mat at
the back. Along the sides, the splints are warped to lie almost horizontal in the plane of
the mat in front. The difference in the deeper winnowing fans is that the mat is cut,
folded and stitched to create a greater depth at the back.
the winnowing fan main difference lying in the edge strengthening (fig.604). The cut ends
of the fold on the inside are covered by a half split of cane which is tied through the
mat by a thin cane split. The diagonally cut corners on the outside are covered by a
single half split of cane that is tied over one fold, across the base of the fold at the
bottom and up to cover the cut edge on the other side. The rim is strengthened by a half
split of a thicker cane beginning on the inside top of the arch. It is folded back on
itself and continued all along the outside sandwiching the edge of the mat. At the other
front corner it is folded onto the front again to overlap at the start. The two ends are cut at an
angle so that the overlapped portion has the same thickness as the rest of the rim. The
front edge of the tray is strengthened in a similar manner (fig. 605). The two rims are
interlooped at the front corners. The mat in this winnowing fan is also strengthened by
three additional cane splits running through the weave along the central axis.
winnowing fan made one of the Southeast Asian countries (fig.609). The wide flat
spaced-out warp strips are turned upwards at the back to create the depth. The weft, a
continuous strip made from narrow outer splits of bamboo, is woven back and forth across
the width. This strip is twisted and folded over a bamboo split around the rim. The back
surface of the fan is created by the weft moving in concentric semi-circles.
Two splints of bamboo sandwich the
rim of the mat. A third narrow splint lies between them on the top edge of the fan. This
splint is partially split into a number of strips so that the bend of the rim is
accommodated, with the outer skin of the splint always facing upwards (fig.610). Two smaller splits of bamboo
are tied on either side of the mat just below the rim to provide further strengthening.
The front edge of the fan is finished by twisting a couple of weft elements around
consecutive warp element to provide a tighter weave. The ends of the warp elements are
twisted, folded underneath and inserted into the weave to prevent it from getting loose.
There is no other strengthening on the front edge.
This product seems to be
a shovel used to shift mud and stones during construction work. It has the general form of
a winnowing fan with the front edge horizontal, and with a triangular back surface
creating the depth (fig.611).