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Sprinkler

  • US 4,379,523 A
  • Filed: 09/04/1981
  • Issued: 04/12/1983
  • Est. Priority Date: 09/05/1980
  • Status: Expired due to Fees
First Claim
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1. A swivelling fan-jet sprinkler which is convertible from a coarse sprinkling mode in which it covers a relatively large irrigation area to a gentler spraying mode in which it covers a smaller irrigation area, the sprinkler comprising in combination:

  • a sprinkler housing with a sprinkler stand supporting the housing;

    a hose connector on the sprinkler housing for the supply of pressurized water to the sprinkler housing;

    a tubular nozzle cylinder having a longitudinal axis, said tubular nozzle cylinder extending horizontally from the sprinkler housing in a cantilever fashion, the nozzle cylinder being rotatably supported by the sprinkler housing and having arranged on an upper side of said nozzle cylinder a row of nozzle bores oriented in a diverging fantail spray pattern with a common plane;

    means utilizing the water flow in the sprinkler housing for driving the nozzle cylinder to execute a slowly reciprocating swivelling motion about said longitudinal axis; and

    a spinner cage having a longitudinal bore extending therethrough, and a plurality of passage means extending from said longitudinal bore to an outer surface of said spinner cage for causing rotation of said spinner cage upon impact by water jets exiting from the nozzle bores, said spinner cage having positioning means cooperating with the tubular nozzle cylinder for axially positioning the spinner cage on the nozzle cylinder in a freely rotatable manner for readily attachable and detachable connection to the nozzle cylinder for the conversion of the latter from a coarse sprinkling mode with a detached spinner cage to a gentle spraying mode with an attached spinner cage; and

    whereinthe spinner cage, when attached to the sprinkler, surrounds the nozzle cylinder, being freely rotatable thereon, the water jets exiting from the nozzle cylinder being disturbed by the spinner cage, while imparting a rotary motion to the latter to accomplish said gentler spraying mode.

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