The load input tensile tester, performance of which is not influenced by the mechanical properties of the material to be tested had been designed and manufactured.
The ability of this tester are investigated through experiments.
This tester is proved to test the mechanical properties of textile fabrics un'ler the load input which is an arbitrary function of time when the following conditions are satisfied :
i) To avoid the velocity error of the tester, the servo mechanism should satisfy the inequality :
1/K_s+K_pf<<K_mK_f
ii) To avoid the infuence of the properties of the material to be tested, the hydraulic system of type one sould satiafy the inequality :
A²/k₂K_pf>>1
iii) To make the performance of the tester to be independent of the properties of the test material to be tested, a compensation circuit of the servo system should satisfy the conditions :
K₀T₂T_pf>>K_pfT₁
G_c (s) =aT_2s+1/T_2s+1, T₂>₁

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This paper describes the operating performances of the loom using the multi-rapier weft insertion system accelerated by the compressed air. The basic structure of the multi-rapier is the same as one described in the Part 1 published in Vol. 26, P667-676.
The weaving speed of the loom is 59 rpm, almost equal to the mechanically accelerated multi-rapier loom described in the Part 1. The discussions on the relation between the rapier's motion and the air pressure inside the cylinder has shown that it is considered easy to increase the loom speed comparing with the mechanical method described in Part 1.

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