IL37151A - Part circle sprinklers - Google Patents

Description

IMPROVEMENTS IN OB RELATING TO PART CIRCLE SPRINKLERS This invention relates to part circle in particular to sprinklers which on a riser by means of a connector a bushing is rotatably mounted and terminating in a nozzle from the spray of water is on top of such sprinkler a known per is controlling the rot table movement of the bushing and thereby directing spray into various These sprinklers are equipped with means to limit the aotion of the hammer in order to restrict the area of irrigation to a certain area of the circle round the that way the sprinkler will not act on like sport fields while the remainder of circular area will be These sprinklers will be referred to as circle sprinklers as defined The known means for limiting area of irrigation consist of two brackets or similar devices mounted either on the connector or on a short tube piece it projecting laterally from the area of the These brackets can be set at a predetermined angle in correspondence to the area desired not to be A downwardly directed arm mounted on the oscillating known per will impinge on these brackets if the rotatory movement has the connector and bushing into a certain position and will prevent then the continuation of the rotatory movement of the hammer and the connector to rotate in the opposite until the said en second whereupon rotation is again In other effective irrigation performed only in an area lying between said i brackets wherein the arm may move vhile that section of the circle lying between the other sides of the brackets remains without The present invention relates to an improvement of the means effecting the part circle irrigation and achieves in particular an easy adjustment of these means to any desired section of the circular According to the two rings are loosely mounted on an upper part of the connector tube whieh has plurality of small grooves parallel to the connector The rings have a triangular basis to called hereinafter the legs of the which basis protrudes from the oute diameter of the connector At the point where legs of the ring pass into circular small pointed teeth are adapted to grooves of the connecto These pointed teeth are slightly inclined to each The whole rin made of somewhat flexible plastic so that its cular portion can be opened a bit by grippin its two legs and moving same in a direction from each in of the inclination of the said teeth whole can be shifted rotat bly about the axle of the connector tube only in while in contrary direction it is if two such rings are mounted on the connector one above the their position on the connector tube be changed at will by gripping one of the legs rotatably shifting ring in that direction where the inclined teeth glide the grooves o the connector the setting of a predetermined angle betveen the two rings can easily be The downwardly directed arm of the bushing or of the hammer is apt to impinge on the legs of these shaped beeause they protrude from the connector tube and thus correspond to the brackets known per In a preferred e bodiment of the the connector tube is provided at its head with a so to prevent the unintentional removal of the rings from the area of connector tube on which they are loosely In accordance with another alternative preferred embodiment of the the connector tube is provided with two grooves called horizontal running normal to the grooves already mentioned called and rings provided at the inside of their oircular with elongated protrusions to enggge the horizontal The invention will be by way of example in the accompanying drawings in 1 is a and side view of connector 2 shows the ring according to one preferred embodiment of the inventions 3 and 4 are corresponding views of the connector tube and ring according to another preferred The connector equipped as known per with a nut 2 and has at its upper portion grooves 3 running parallel to the axis o the connector An ring 4 has a triangular basis called the legs 5 and is equipped with somewhat inclined teeth at the portion where the legs pass into the circula These teeth are adapted to engage grooves 3 and may glide over them if the two legs 5 are somewhat separated from each other and shifted in the direction of the arrow shown in The arm extending om is adapted to impinge on the triangular legs A second ring 7 is loosely mounted on the connector tube 1 and abuts at its lower end the nut flange 8 provided at the upper end of the tube prevents the two rings from being unintentionally removed from the connector Pre erably the teeth of the second ring provided at the inner circle are inclined in an opposite direction to those of the ring thus enabling a shift of the rings in opposite In the embodiment shown in 3 and the connector tube nut has equally an upper part with grooves but addition thereto two horizontal grooves 9 and are provided and distanced from each other fo at least the diameter of one The ring with its triangular legs and teeth con orms in all details to tha in but addition thereto is provided with small protrusions at the inside of circular In the example they extend only a part insufficientOCRQuality

Claims (4)

of the inner eirele of the ring and lie opposite to each other. They are so shaped as to engage grooves 9 or 9'» thus securing their position on the connector tube, without interfering vith their capability to be shifted around that tube to predetermined angles betveen each other. C L A I M S i

1. · A device for part circle sprinklers, as defined above, consisting of tvo Omega-shaped rings, made of flexible, e.g. plastic, material, both bein loosely mounted one above the other on an upper part of the connector tube, the legs of each ring protruding from the outer diameter of the connector tube and having small pointed teeth at the point where the legs pass into the circular portion of the ring, which teeth are adapted to engage vertical grooves on the connector tube, the tooth bein slightly inclined to each other.

2. A device for part circle sprinklers, as claimed in claim 1, wherein the connector tube is provided at its head vith a flange*

3. A device for part eirele sprinklers, as claimed in claim 1, wherein the eonnector tube is provided with horizontal grooves and the rings are provided at the inside of their circular portions vith elongated protrusions adapted to engage the horizontal grooves.

4. A device for part circle sprinklers, substantially as described hereinbefore vith reference to the accompanying drawings