GB190700252A - Improvements in or connected with Apparatus for Transferring Coal and similar Bulk Cargo from Barges, Colliers or other Vessels to Ships or Wharves. - Google Patents

Abstract

252. White, T. Jan. 4. Loading and unloading; conveyers; elevators. -Twin pontoons of the type described in Specification No. 413, A.D. 1904, connected by a rigid superstructure, are employed for transferring coal or similar bulk cargo from barges placed between the pontoons to a wharf or ship. The cargo is raised by means of two chain-and-gravity bucketelevators each employed in unloading one barge, and provided with a weighted compensating loop to allow for relative vertical movement of the pontoons and barge, another loop of the elevator working in a shoe or pocket temporarily anchored in the hold of the barge and fed by a conveyer in the latter ; the cargo is finally discharged from bunker-loading shoots on the top of the superstructure, either direct or by means of conveyers. The apparatus may be arranged for use without the secondary balancing-pontoon. Fig. 1 is a side elevation of the pontoons and superstructure ; Fig. 3 an end elevation of the same ; and Fig. 6 shows details of the pocket in which a loop of the elevator works. Only a half of the apparatus is shown in Fig. 1, the remainder being similar, so that two barges can be unloaded at once. A platform is supported by pillars on the pontoons A, B, and carries the shoot a and the elevator c. The elevator is driven by the wheels b<1>, and guided by, and carried on the lead wheels b, b<2> ... b<5>. The axle of the wheels b<6> slides in vertical guides, allowing a loop to be formed in the elevator chain for adjusting the tension. The chain is kept tight by a weight W and rope W<1> hauled by a winding-engine on the main pontoon A. A pocket or shoe i, Fig. 6, is anchored in the hold of the barge by a fastening i'. The elevator chain and buckets pass around a wheel in the pocket, rollers c<5> on the chain moving in guides in the pocket. The buckets are fed by a conveyer G in the barge through the shoot i<3> in the pocket. The rollers k on the buckets engage the sides of the pocket at i<5> and tip the buckets into a position suitable for receiving the cargo. Small material that escapes the buckets can fall out of the pocket through the small hole i<6>. The buckets discharge their contents into the shoot a, by rollers engaging a tripping plate, and causing the buckets to tip up. In a modified arrangement, the cargo is loaded into a ship by conveyers, some of which are loaded directly by the elevator and discharge into the hatches of the vessel.