GB615322A - Improvements in the application of powders in agriculture - Google Patents

Improvements in the application of powders in agriculture

Info

Publication number
GB615322A
GB615322A GB26581/45A GB2658145A GB615322A GB 615322 A GB615322 A GB 615322A GB 26581/45 A GB26581/45 A GB 26581/45A GB 2658145 A GB2658145 A GB 2658145A GB 615322 A GB615322 A GB 615322A
Authority
GB
United Kingdom
Prior art keywords
powder
suspension
electrified
air
electrode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB26581/45A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB615322A publication Critical patent/GB615322A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
    • A01M9/00—Special adaptations or arrangements of powder-spraying apparatus for purposes covered by this subclass
    • A01M9/0007—Pneumatic dusters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/03—Discharge apparatus, e.g. electrostatic spray guns characterised by the use of gas, e.g. electrostatically assisted pneumatic spraying
    • B05B5/032—Discharge apparatus, e.g. electrostatic spray guns characterised by the use of gas, e.g. electrostatically assisted pneumatic spraying for spraying particulate materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/047—Discharge apparatus, e.g. electrostatic spray guns using tribo-charging

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Insects & Arthropods (AREA)
  • Pest Control & Pesticides (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Catching Or Destruction (AREA)

Abstract

An insecticidal, fungicidal or herbicidal powder for application to plants is prepared by generating an electric field, and passing a suspension in air of the powder through the electric field. Thus the powder in air suspension may be passed in the vicinity of a high-voltage electrode charged to about 20,000 volts which may be situated in the neighbourhood of or beyond the outlet aperture of the apparatus. Ionisation may be increased by coating the electrode with a radioactive substance such as thorium oxide or by submitting it to short wave radiation. The electrode may be one or more straight electrified wires pointed if desired or a vibrating electrified metal plate upon which the powder is distributed from a hopper. Alternatively, the powder suspension may be electrified by friction, e.g. by being blown tangentially into the base of a truncated conical chamber made of "Bakelite" (Registered Trade Mark) of which the small open base serves as the nozzle. Triangular metal blades may be secured to the wall of the chamber to eliminate electricity of opposite charge which tends to accumulate thereon. Substances treated are sulphur, naphthalene or nitrated phenol. The Specification as open to inspection under Sect. 91 describes also the electrification of air suspensions of liquids such as nicotine. This subject-matter does not appear in the Specification as accepted.ALSO:An insecticidal, fungicidal or herbicidal powder for application to plants is prepared by generating an electric field, and passing a suspension in air of the powder through the electric field. Thus the powder in air suspension may be passed in the vicinity of a high-voltage electrode charged to about 20,000 volts which may be situated in the neighbourhood of or beyond the outlet aperture of the apparatus. Ionisation may be increased by coating the electrode with a radio active substance such as thorium oxide or by submitting it to short wave radiation. The electrode may be one or more straight electrified wires pointed if desired or a vibrating electrified metal plate upon which the powder is distributed from a hopper. Alternatively, the powder suspension may be electrified by friction, e.g. by being blown tangentially into the base of a truncated conical chamber made of "Bakelite" (Registered Trade Mark) of which the small open base serves as the nozzle. Triangular metal blades may be secured to the wall of the chamber to eliminate electricity of opposite charge which tends to accumulate thereon. Specified powdery substances treated are sulphur, naphthalene or nitrated phenols. The Specification as open to inspection under Sect. 91 describes also the electrification of air suspensions of liquids such as nicotine. This subject-matter does not appear in the Specification as accepted.
GB26581/45A 1943-10-22 1945-10-11 Improvements in the application of powders in agriculture Expired GB615322A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR615322X 1943-10-22

Publications (1)

Publication Number Publication Date
GB615322A true GB615322A (en) 1949-01-05

Family

ID=8980835

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26581/45A Expired GB615322A (en) 1943-10-22 1945-10-11 Improvements in the application of powders in agriculture

Country Status (1)

Country Link
GB (1) GB615322A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6199766B1 (en) 1909-03-29 2001-03-13 University Of Southampton Targeting of flying insects with insecticides and apparatus for charging liquids

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6199766B1 (en) 1909-03-29 2001-03-13 University Of Southampton Targeting of flying insects with insecticides and apparatus for charging liquids

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