26,706. Notelet, J., and Vincentelli, F. Nov. 20. Sewing, work-holders for.-Relates to stretching-frames for embroiderers' canvas &c. of the kind provided with grooves into which the canvas &c. is forced by means of laths or equivalents. (1) The laths are forced into the grooves by means of screw clamps, Fig. 11, comprising a bolt 16 provided with a wing-nut 17 and terminating in a hook 18 for engagement over the lath 6, or by means of spring clamps, Fig. 6, comprising a wood block 8 attached to a bent flat spring 7 and formed with a recess 9 to fit over the lath 6. The laths and clamps may be applied to rectangular frames of fixed size, or of variable size formed of interchangeable loose sides having mortise-and-tenon joints, or to rectangular frames made to fold in half, in which case the laths serve also to render rigid the opened frame; any of these frames may be strengthened by a cross stretcher-bar. (2) For elliptical frames, the stretching-laths are replaced by iron loops 11, Fig. 8, secured together by means of bolts 12 and wing-nuts 14. (3) For transporting fresh paintings &c. without damage, two frames are coupled together by means of U-shaped spring clamps 19, Fig. 10, furnished with wood blocks 20 having a central projection 21 to separate the frames.
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