A ball launcher for launching a plurality of balls into a well, including an endless conveyor belt, the conveyor belt forming a plurality of ball retainers, each operable to contain one of the plurality of balls, a drive motor for selectively driving the conveyor belt, and a brake for braking the conveyor belt.

A conveyor system, comprising: a track containing an endless chain (2); and a plurality of buckets (4) each bucket (4) comprising a bucket body defining a void in which contents can be contained, an arm (51) pivotally mounted on the bucket body through a mounting for rotation relative to the bucket body about a bucket pivot axis (50) through the mounting, the arm (51) extending perpendicular to the bucket pivot axis (50) and having an arm head (16) at point distant from the axis; each arm head being fixed to the chain through an arm mounting, the arm mountings being spaced apart along the endless chain by a chain pitch, whereas the endless chain follows a first path, and the mountings of the buckets follow a second path; and in which variation of the radius of curvature of the first path relative to the second path causes a separation of the buckets to vary.

The invention relates to a device and a method for controlling a steep conveyor, comprising a control unit (15), a conveyor drive system (5) for driving a conveyor belt (2), and a sensor unit for determining a weight G.sub.1-n of the material to be conveyed (4) assigned to a predetermined section T.sub.1-n of the conveyor belt (2), wherein the sensor unit is adapted to transmit information about the weight to the control unit (15), wherein the control unit (15) is adapted to determine from the information about the weight G.sub.1-n a length L.sub.1-n assigned to the predetermined section T.sub.1-n in a steep conveyor region S of the conveyor belt (2) and to adjust a strain of a drive belt (2) of the conveyor drive system (5) based on the determined lengths L.sub.1-n assigned to the predetermined sections T.sub.1-n.

A portable conveyor system receives and conveys particulate material to downstream equipment. The system includes a base frame, a material handling assembly carried on the base frame for depositing the material into the downstream equipment, and at least one adjustable feed conveyor to convey the material from a source onto the material handling assembly. The feed conveyor is movable in various manners relative to the base frame between a working position and a stored position. The material handling assembly includes a main conveyor assembly to convey material along the base frame from the feed conveyors to an elevating assembly at one end of the base frame. The elevating assembly is collapsible in height relative to the base frame for transport.

A grain conveyor chain for a harvesting vehicle includes a chain made of standard chain elements and multiple scoops. The scoops are fastened on the chain and the standard chain elements have inner plates, outer plates, pins, and/or sleeves, with each scoop being in direct contact with a standard chain element.

A molding sand supply device according to one aspect includes a sampling tool to sample molding sand, and a conveying device to convey the molding sand sampled by the sampling tool to a supply position along a bent conveyance path.

The present invention is a kind of bulk lifting transportation system applied in buildings, which relates to the elevator technology field and the construction field. It includes a lift shaft, and the lift shaft is provided with a driving mechanism, a reversing mechanism, and its transportation belt. The driving mechanism and the reversing mechanism are respectively arranged at the two ends of the lift shaft, and the conveyor belt bypasses the reversing mechanism and is connected with the driving mechanism; The conveyor belt is provided with loading devices for placing stuff at intervals. The number of loading devices is the same as the number of floors of the building, and the distance between adjacent loading devices is equal to the distance between adjacent pick-up openings; The process of connecting and separating greatly saves the time required for single lifting transportation and can significantly improve transportation efficiency.

The invention relates to a grain conveyor chain for a harvesting vehicle having a chain made of standard chain elements, wherein the standard chain elements comprise inner plates, outer plates, pins and/or sleeves, and a plurality of scoops, wherein the scoops are fastened on the chain and wherein the chain has chain links, which are partially back-rigid, and to a method for operating the grain conveyor chain according to the invention in a harvesting vehicle.

Provided is a foundry sand supply device capable of collecting foundry sand at an arbitrary timing. The foundry sand supply device includes a bucket collecting the foundry sand, a bucket drive unit rotatably supporting the bucket and driving the bucket, and a moving unit moving the bucket drive unit close to and away from the foundry sand, and moving the bucket drive unit between a collecting position to collect the foundry sand and a supply position to supply the foundry sand.

An accumulator has a control system for controlling motion of a plurality of buckets on a continuous loop and logs traversing on a log transfer device. The log transfer device delivers a log from an entrance of the log transfer device to a bucket infeed on the accumulator. The bucket infeed receives a log from the log transfer device and allows a bucket to receive the log from the log transfer device. A time for the log to move from the entrance of the log transfer device to the bucket infeed is determined. Based on the time for the log to move from the entrance of the log transfer device to the bucket infeed, the control system controls the accumulator drive to move the continuous loop such that a bucket in the plurality of buckets is positioned at the bucket infeed with sufficient time to allow the bucket to receive the log from the log transfer device.