| http://www.w3.org/ns/prov#value | - When a pull is exerted on the strap 45 to move it in the direction of the arrow 54 in Fig. 1, the tension in the strap operates to tilt the lever arm 48 about the shaft 50 so that it is moved toward the position shown by dotted lines in Fig. l with the result that a considerable portion 'of the strap or other strip material which is lo
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