| 摘要 |
1503346 Spray-producers COAL INDUSTRY (PATENTS) LTD 25 May 1976 [1 July 1975] 27712/75 Heading B2F A gun for coating coking-oven doors with lute comprises a head 5 having an inlet 6 for lute under pressure, an inlet 8 for compressed air and a nozzle 7. The inlet 8 is a tube extending approximately to the axis of the inlet 6, and is coaxial with the nozzle. The lute may be supplied from a cylinder containing a piston driven by compressed air which may be from the same source as the air for spraying. |
