GB1428594A - Weaving looms - Google Patents

Abstract

1428594 Tape drives R DEWAS 12 Aug 1974 [13 Aug 1973] 35392/74 Heading D1E A flexible tape inserter 2, with perforations 5 engaged by a toothed driving wheel 3, has an idler wheel 9 positioned above the tape to stop it rising from the driving wheel 3. In Figure 1 the driving wheel 3 has extra long teeth 4 which pass through the tape 2 to engage in recesses 10 in the idler wheel 9 which abuts the tape with surfaces 12 between the recesses 10. In Figure 4 the wheel 3 and idler 9 engage alternate perforations 5, 11a in the tape and the idler 9 has continuous flanges 12a, on both sides of the teeth 10a, abutting the tape. In Figure 7 non- continuous flanges 12b are provided as sideways extensions of the teeth 10b. In Figure 9 the idler has teeth 10c engaging tape perforations 11c on both sides of the perforations 5, flanges 12c between the teeth 11c bearing on the tape and the center portion 12c of the idler has recesses 14 for the wheel teeth. In Figure 12 circumferentially spaced idlers 9d enter the driving wheel perforations 5 and the idlers may be perpendicular to the wheel 3 and each have teeth 10d engaging half the width of the tape perforations 5 (Fig. 14, not shown) or may be at an angle to the wheel 3 and have teeth engaging the whole of a tape perforation (Fig. 13, not shown). Figure 15 shows overlapping half idlers 9e engaging separate perforations 11e on both sides of the wheel perforations 5. Combinations of the various idlers may be provided and the idlers may be mounted on an eccentric shaft 8 to provide for adjustment towards and away from the wheel 3.