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A material conveying system capable of traversing a floor along a curvilinear path, the system comprising a plurality of framework members arranged in tandem on the surface along a portion of the path to form an elongated longitudinally extending conveyor train; and connector means on each framework

A material conveying system capable of traversing a floor along a curvilinear path, the system comprising a plurality of framework members arranged in tandem on the surface along a portion of the path to form an elongated longitudinally extending conveyor train; and connector means on each framework member cooperate with connector means on each adjacent framework member for coupling the plurality of framework members, the connector means permitting movement between adjacent framework members. The conveying system also includes a plurality of the framework members including a crawler chain assembly comprising a plurality of crawler chain pads interconnected by chain links to form an endless loop. The crawler chain assembly extends over a lower portion of each of the plurality of framework members wherein the crawler chain pads are maintained in engagement with the floor, and over an upper portion having an upper surface that supports the chain pads. The adjacent framework members include cooperating means for limiting the articulation between adjacent framework members in the horizontal, vertical and longitudinal directions, such cooperating means comprising outboard side tubes having a trapping on one end, the trapping being received in the hollow other end of the side tube of the next adjacent frame member. The framework members also include means for supporting an orbitally moveable endless conveyor belt above the crawler chain assembly, the conveying run of the orbitally moveable conveyor belt operable to convey material substantially throughout the longitudinal extent of the train.

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A material conveying system capable of traversing a floor along a curvilinear path, the system comprising a plurality of framework members arranged in tandem on the surface along a portion of the path to form an elongated longitudinally extending conveyor train; and connector means on each framework

A material conveying system capable of traversing a floor along a curvilinear path, the system comprising a plurality of framework members arranged in tandem on the surface along a portion of the path to form an elongated longitudinally extending conveyor train; and connector means on each framework member cooperate with connector means on each adjacent framework member for coupling the plurality of framework members, the connector means permitting movement between adjacent framework members. The conveying system also includes a plurality of the framework members including a crawler chain assembly comprising a plurality of crawler chain pads interconnected by chain links to form an endless loop. The crawler chain assembly extends over a lower portion of each of the plurality of framework members wherein the crawler chain pads are maintained in engagement with the floor, and over an upper portion having an upper surface that supports the chain pads. The adjacent framework members include cooperating means for limiting the articulation between adjacent framework members in the horizontal, vertical and longitudinal directions, such cooperating means comprising outboard side tubes having a trapping on one end, the trapping being received in the hollow other end of the side tube of the next adjacent frame member. The framework members also include means for supporting an orbitally moveable endless conveyor belt above the crawler chain assembly, the conveying run of the orbitally moveable conveyor belt operable to convey material substantially throughout the longitudinal extent of the train. peripheral portion of said mesh plate, or a spacer provided between said mesh plate and the upper end face of said pump shaft, to cause the biasing force produced by said biasing member to be applied uniformly to said mesh plate. 24. An ultrasonic atomizer having an ultrasonic pump comprising a pump shaft formed to have a pump bore passing through it axially and having open upper and lower ends, and an ultrasonic vibrator mounted on the pump shaft in the vicinity of the midpoint thereof with respect to the axial direction, wherein a liquid inside a liquid vessel is pumped up from the lower end of said pump bore and the liquid is supplied to a mesh plate from the upper end of said pump bore so as to be sprayed, and wherein a bush is provided for encircling and supporting liquid tightly a portion of said pump shaft of said ultrasonic pump excluding upper and lower end portions of said pump shaft, an annular seal lip, in intimate liquid-tight contact with a portion of said pump shaft situated higher than said ultrasonic vibrator, is formed integrally at least at two locations, one above the other, on an upper portion of said bush, and a gap is provided between said portion of the pump shaft and said bush between said annular seal lips at the at least two locations. 25. An ultrasonic atomizer comprising: an ultrasonic pump comprising a pump shaft having an upper end, a lower end, and a pump bore passing axially through said pump shaft to form openings in the upper and lower ends, said ultrasonic pump further comprising an ultrasonic vibrator mounted on said pump shaft substantially at a midpoint thereof with respect to the axial direction of said pump shaft; a liquid vessel arranged such t