Patent GB-191212501-A (GB)
Title: Fabric Reeling Device for Embroidering Machines.
Inventor: GROEBLI JOSEPH ARNOLD
IPC: D05C9/12
Filed: 1912-05-28
Granted: 1913-05-22
Abstract: 12,501. Groebli, J. A. May 28. Embroidery-machines.-Relates to large embroidery-machines wherein the fabric is carried in the work-frame between a pair of rollers, and consists of mechanical means whereby the fabric is automatically reeled off and tensioned lengthways and crossways. A vertical work-frame 5, Fig. 1, carries two pieces of fabric 22, 23, arranged between two pairs of rollers 24, 25, 27, 28. The sides of the fabric are gripped between pairs of rollers, each pair consisting of a grooved roller 62, Figs. 1 and 4, and a pin roller 66, Fig. 4. Upon a yoke 82, Figs. 1 and 2, are mounted details of the operating- mechanism, some of which are omitted in Fig. 1. Assumed that the embroidery is finished and that fresh lengths of fabric are required to be reeled off, a rod 141, Fig. 2, is pulled downwards by the operator. This causes a spindle 86 to be rotated. A worm 100 on the end of the spindle 86 thereupon turns a pinion 101, by which three cams arranged side by side are rotated. A pin 157, Fig. 2, disengages a trigger 155, which thereupon engages a stop 156 on the starting- rod 141. The rod is accordingly held down until the pinion 101 completes a revolution, whereupon the trigger is tripped and the reeling- mechanism stopped. When the pinion 101 begins to rotate the first cam raises a rod 107 whereupon a double bevel-gear sleeve 87 on the spindle 86 is raised and rotates a cross-shaft 19, Figs. 1 and 2. This action separates and rotates the clamping-rollers 62, 66 and releases the edge of the fabric. The second cam then raises a rod 109, whereupon a gear sleeve 89 is lifted and causes a cross-shaft 21 to be rotated, whereby a rod 59 carrying clamps 60 is lowered. The clamps 60 support the underside of each of the upper rollers during the embroidery operation. The rotation of the cross-shaft 21 also causes rods 42 carrying arms 44 to be lowered. This permits worms 38, Figs. 1, 2, and 4, slidably mounted upon spindles 29, to move downwards. The worms 38 gear with pinions 39, Fig. 4, on the lower rollers. These rollers accordingly are slightly rotated, thereby relieving the fabric from vertical tension. The third cam operated by the pinion 101 now raises a rod 108 whereby a cross-shaft 20 is rotated. This shaft rotates vertical spindles 29 carrying worms 32, 38 gearing with pinions on the rollers. The fabric is accordingly reeled off to the desired amount, the cam being adjustable. The other cams then cause the shafts 19, 21 to be reversed, whereupon the lengthways and crossways tensioning is effected, and finally the trigger 155 is tripped to stop the shaft 86. The worms 32, actuating the upper rollers, are arranged to slip under a predetermined tension and their pitch differs from that of the worms 38, so that the upper rollers rotate faster than the lower rollers. This compensates for unequal amounts of fabric on the two rollers. The fabric-tensioning-devices can be put entirely out of action and the reeling only performed. For this purpose, a hand-lever 129, connected to the gear sleeve 88, is provided.