GB440666A - Improvements in or relating to loading machines for mines - Google Patents

Abstract

440,666. Endless belt conveyers. MOORE, M. S., Ivanhoe, Worcester Road, Malvern, Worcestershire. Aug. 7, 1934, No. 22889. Addition to 357,816. [Class 78 (i)] A loading-machine for mines, as described in the parent Specification, is provided with a flexible conveyer 4, Figs. 1 and 2, having slats 8, 14 extending across the belt, and means co-operating with the slats for preventing the accumulation of dust between the return side of the belt and the machine frame. The slats 8, of trapezoidal cross-section with the higher edge 13 in front, are secured to chains 9 driven by sprockets 10 on a shaft 5. Their ends are dovetailed and fit into corresponding notches in some of the links 12 of the chains. The slats 14 of half-round crosssection reinforce the belt. In a modification, Fig. 5, all the slats are trapezoidal and are secured by rivets 19 between lugs 18 formed on alternate links of the chains 9, which are fitted with rollers 20 running in suitable tracks. At the raised end of the conveyer, the throwoff plate 21 is adjustably fitted on its support 22, the coal being thrown onto a shoot 23 for delivering to a longwall conveyer. Dust carried under the plate 21 falls into a chamber 24 open at the side 25 remote from the belt. To prevent accumulation of dust under the belt, a plate 26, sloping downwardly at a slightly greater inclination than the belt to provide a flaring opening 27, is arranged under the return side, the slats 8 acting as scrapers along the plate. To prevent dust scraped from the floor from clogging the end 6 of the conveyer, a curved plate 28 slightly eccentric to the shaft 6 is provided. This plate forms a gap of increasing cross-section, through which any material caught by the underside of the belt is brought to the upper side.