GB721937A - Improvements in or relating to conveying devices - Google Patents

Abstract

721,937. Endless belt conveyers. CONTINENTAL GUMMI-WERKE AKT.-GES. Nov. 26, 1952 [Nov. 26, 1951], No. 29963/52. Class 78 (1). A tubular elastic conveyer belt is of substantially rectangular cross-section and is provided with at least one longitudinal slit provided with closure means for closing the belt at its slit. As shown, Fig. 1, the belt is divided into an upper part 2 and a lower part 1 provided with reinforcement 3. The two parts are united by continuous ribs 5 engaging in continuous grooves 4. Any number of ribs and/or grooves may be provided in each part. Charge and discharge is effected by closing and opening one or both sides of the belt, by means of rollers, the upper part in the case of only one side being opened being arranged to lie alongside the lower part in inverted position. The two parts may be moved away in opposite directions after discharge as in Fig. 14, the upper part being if desired provided with ribs 12 for assisting vertical conveying, or the upper may be guided in a loop beyond the lower part (or vice versa) this loop being adjustable along the length of the conveyer if desired, Fig. 13, to vary the discharge point into a shoot 10. To facilitate opening and closing of the belt by passing around rollers the outer roller-engaging belt faces may have bevelled portions 19, Fig. 21, such that the stretch of the belt parts in passing outwardly around the rollers causes the groove 4 to open and the rib 5 to be lifted clear of the groove without friction. The groove 4 may be simplified into an undercut lateral side of the lower part so that the upper part fits on the lower part as the lid on a jam jar, bevelled faces 19 being provided on the upper part to prevent friction during opening and closing. The groove 4 may also be opened by providing the opening roller 8, Fig. 26, with a rib 21, or a plain roller may be used and a rib formed on the belt part 1 beneath the groove 4. The belt may be guided by rollers to move with its crosssection vertical so that it may be passed in a tortuous path around a chamber. Guiding of the belt arranged horizontally may be facilitated by providing ribs 13, Fig. 15, on the outer faces of the belt engageable with grooves 14 in guiding rollers. Reinforcements 15 may be provided in the ribs 13. The belt may be formed in one piece with two overlapping upper parts 16, Fig. 16. forming the slit. Alternatively a central slide fastener may be incorporated in the middle of the upper side. A separate cover band may alternatively be used to fasten together the two halves of the upper side.