| 摘要 |
A powder dispensing assembly including support structure defined by spaced end plates interconnected by a top plate with a purality of openings therein for passing particles therethrough. A Y-shaped chute has its upper extremities connected to the edges of the top plate and parallel lower extremities defining an outlet opening. A tubular receptacle is supported at each end on stud shafts extending from the end plates. The receptacle has a rear wall and a bottom wall extending from the rear wall to a lip over which the particles of powder move to define a falling curtain of powder particles. A bar extends between the end walls of the receptacle above the bottom wall to establish a gap between the bottom wall and the bar, the outlet of the chute being between the bar and the rear wall of the receptacle. A rod extends through one stud shaft at one end of the assembly and threadedly engages the receptacle for vibrating the receptacle rectilinearly in a direction parallel to the lip. The angular position of the receptacle may be adjusted by a lever extending radially of the rod and biased against an adjustable set screw. |
