| 摘要 |
1,102,188. Feeding material. PENNSALT CHEMICALS CORPORATION. 7 Dec., 1965 [7 Dec., 1964], No. 51846/65. Heading B8S. Material from hopper 12 is discharged therefrom by vibrating trough 22 into hopper 14, being then aerated at 66 and discharged from hopper 14 past valve 27 into extruding machine 60 by the vertical reciprocation of pusher 36 operated by cylinder 32. Additionally, a light cell 94 is provided in the side of hopper 14 the height of which may be varied by blocks 86 so that, when the height of material in the hopper rises above the level of the light ray, the vibration of trough 22 is stopped.
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