Patent GB-1488313-A (GB)
Title: Set of scaffold components
IPC: B65G39/12
Filed: 1975-08-26
Abstract: 1488313 Mounting conveyer rollers MASYC AG 26 Aug 1975 [27 Aug 1974] 35192/75 Heading B8A [Also in Divisions E1 and F2] A set of components for a load-bearing structure, e.g. a belt conveyer framework, comprises profile bars 10, each of sigma-shaped cross-section having flanges of generally U- section which provide free arms 18 extending inwardly parallel to a flat centre portion 12 of the web and connecting arms 20, also parallel to the centre portion 12 on the opposite side of the plane of the latter, joined to the portion 12 by integral inclined web portions 22, and connecting bars (50, Fig. 2, not shown), also of sigma-shaped cross-section, having flanges of generally L-section which fit slidingly within the flanges of the profile bars 10, matching perforations 16, (56), respectively being provided in at least the centre web portions 12, (52) of the bars 10, (50) for securing the bars 10, (50) against separation, preferably by pushin fastening studs 114, as indicated in Fig. 12a, having a hexagonal shank, to match the hexagonal shape of the perforations 16, (56) and a hexagonal head split by slots 124 to allow the head to be forced through a perforation and snap into place. Bearing elements 110 may be carried by some of the studs to support the axles 112 of belt idler rollers (113, Fig. 12, not shown), each bearing element consisting of a H-section member integral with the stud and having alternative bearing grooves 116, 118 to receive an axle 112, the former groove being concentric with the stud shank and the latter groove being offset so that six different positions of the axle may be obtained by engaging the stud in different orientations within a hexagonal perforation 16. Various alternative means for supporting either idler rollers or transverse frame members are also disclosed, e.g. the angle bracket shown in Fig. 4 which has two limbs 32 one of which can be interlocked with a bar 10 by providing cut-away portions 34, 35 in which the flange arms 18 of bar 10 engage, both limbs having slotted apertures 36-38 for selective mating with the perforations 16 of a frame member so that the bracket can be used either as shown in Fig. 4 or as a normal angle bracket (Fig. 5, not shown) where the transverse member is horizontal. Fig. 10 shows an alternative bracket 90 having the functions both of supporting a tubular transverse frame member (96, Fig. 10b, not shown) and of supporting the axle of an idler roller. The bracket 90 has semicircular recesses 98 for bolting to a bar 10, apertures 93 and a spigot formation 94 received within the end of a transverse frame member. An idler roller axle is supported in the upper aperture 93 and the central aperture 93 is used for a tie bolt passing through the transverse frame member. Various other brackets are disclosed, being generally similar to those shown in Fig. 18 which discloses a bracket assembly which supports the axle of an idler roller and comprises a plate element 142 secured to a bar 50 by perforations 133, 134 and studs or bolts, a flange structure 144 integral with the element 142 and having a horizontal slotted aperture 146, and a bracket 70 fixed in a selectively adjustable position to the flange structure 144 by means of the slotted aperture 146, the bracket 70 in turn having a vertical slotted aperture and an arcuate slotted aperture as shown so that an upright 145 can be fitted to it at a desired angle according to the inclination of the conveyer. Brackets (150, Figs. 20-21, not shown) are also disclosed for mounting idler roller axles to skew frames of angled conveyers at a junction.