Construction of Tapped for Plain Weave

Construction of Tapped for Plain Weave
Rubel Miah
Department of Textile engineering
World University of Bangladesh

Experiment Name: Construction of Tapped for Plain Weave.

Introduction: Plain & Twill weave mesh holds a higher volume of ink in its cells than does plain weave. Thicker fabric thickness in twill weave mesh creates a greater adhesive force within the twill weaves cells, so it transfers less ink onto the substrate during printing than the plain weave.

Fig: Plain weave mechanism
Working Principle:
At a radius of 2 inches or 5.08 cm. describe the circle A (figure). This circle represents the distance from the center of the driving shaft to the nearest point of contact with the tradle bowl.

At a radius of 3 inches or 7.62 cm. (5.08 cm. + 2.54 cm. = 7.62 cm.) describe the circle B.

At a radius of 7 inches or 17.78 cm. (7.62 cm+ 10.16 cm = 17.78 cm) describe the circle C. Four inches or 10.16 cm. are added for the lift of tappet.

The circle B represents the centre of the treadle bowl when the inner circle of the tappet is acting upon the bowl. The circle C represents the centre of the bowl when pressed down by the tappet.

The pattern being a plain one, as shown in fig., the circles must be divided into two equal parts, and each half circle will then represent one pick. By the line DE divide the circles into tow equal parts.

Now, as the healds must have a pause or dwell equal to one-third of a pick when at the top and the bottom of their stroke, divide each half-circle into three equal parts by lines FK, GH. Divide FH and GK each into six equal parts and divide the space between the circles B and C into six unequal parts, the largest being in the middle, gradually decreasing towards the circles \B and C. To find out the six unequal parts, describe a semi-circle L between B and C at a radius of half the lift of tappet, which is 5.08 cm. Now divide its circumference into six equal parts and then draw perpendicular lines from then on the line GH. This gives six unequal divisions on the lift to obtain the desired eccentric shape of the tappet.

The plain weave tapped mechanisum we know fabric structure ,mechanism of plain weave, and construction. Its help my future life. 


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