| 摘要 |
a. Unidirectional locking device for a traction clip for stretching skins on drying frames. b. Device characterised in that a plate 8 arranged for this purpose, provided with square-sectioned opening, is fastened by a pivot to the two side lugs 6 and 7 by adhering, in a position of rest, to the body 1 itself in perfect vertical position by virtue of its own weight, but sloping slightly backwards when, due to the resilient action of the skin 4 seized by the jaws 2 and 3, the clip would tend to move towards the centre of the frame, where the skin is stretched. c. The invention relates to a device for unidirectional locking of traction clip for stretching skins on drying frames. <IMAGE>
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