| 主权项 |
1. A sprinkler and side-loading nozzle insert assembly comprising:
a sprinkler body provided with a flow passage and a nozzle insert seated in a complementary recess in said sprinkler body, said nozzle insert rotatable to plural operating positions; said nozzle insert comprising an elongated insert body having an insert axis about which said nozzle insert rotates, a nozzle bore extending through said insert body on an axis intersecting said insert axis and alignable with said flow passage in one of said plural operating positions, a forward end face provided with a turning knob, plural index tabs extending radially from said insert body at circumferentially-spaced locations proximate said forward end face, adapted to engage respective index notches in said sprinkler body as said insert body is rotated to said plural operating portions, wherein said flow passage lies on a longitudinal center axis of said sprinkler body perpendicular to said insert axis, wherein said complementary recess is defined by a substantially cylindrical wall and a collar axially-spaced forwardly of a front end of said substantially cylindrical wall, said collar formed with insert slots arranged to receive said plural index tabs during insertion of said nozzle insert into said complementary recess in an insertion direction, wherein said plural index notches are located on a back face of said collar between said insert slots, wherein a spring is provided within said sprinkler body to bias said nozzle insert in a direction opposite said insertion direction and to bias said plural index tabs into respective ones of said plural index notches as said nozzle insert is rotated into said plural operation positions, wherein said sprinkler body is provided with plural cam tabs and a stop tab proximate a rearward end of said complementary recess, said plural cam tabs and said stop tab extending radially inwardly, and wherein said plural cam tabs are axially aligned with respective ones of said insert slots. |
