| 摘要 |
<p><PICT:0776245/III/1> In an electrostatic spraying installation in which an electric potential difference is established across an article to be coated and a container 1, 2 or 3 for the liquid to be sprayed, the containers 1, 3 have a sharp spraying edge 4, 6 e.g. a slit which may have a serrated edge, or an orifice 16 ... 18, means for supplying liquid to the containers and an overflow 10 ... 12. The containers 1 ... 3 may be conical as shown or be open bowls, and are connected in series by flexible pipes 26 ... 29, a pump 33 delivering liquid 22 from a tank 30. The containers may be of conducting material or may be of insulating material with a conducting coating, and if closed have vents 13 ... 15. Horn-shaped projections at each end of the spraying slit direct the side edges of the liquid spray, and the stream of liquid may be directed by an auxiliary electrode or by an air jet as described in Specification 776,246. The containers 1 ... 3 are pivotable about horizontal axes 23 ... 25 parallel to the edges 4 ... 6 and about horizontal axes at right angles thereto.</p> |
