US1617858A - Screen for nozzles - Google Patents

Description

Patented Feb. 15, 1927.

UNITED STATESr GEORGE E. MARGH, OF MUSKEGON, MICHIGAN.

SCREEN FOR NOZZLES.

Application filed March 30, 19723. Serial No. 628,942.

The present invention relates to screens for nozzles, particularly such .as are employed to vent water from the horizontallydisposed water pipes of an irrigating or sprinkling system; and its object is, generally, to provide an improved screen for such a nozzle whereby any solid matter in suspension in the water may be prevented from stopping or interfering with the How of water through the nozzle; and, more partic-ularly, to provide such a screen formed from a foraminous sheet bent in such manner as to provide a hollow cylindrical screening member having a closed end, and adapted to be holdingly fitted in the nozzle.

rIhis and any other objects hereinafter appearing are attained by, and the invention finds preferable embodiment in, the structure hereinafter particularly described in the body of this specification and illustrated by the accompanying drawings, in which z Figure l is a vertical central longitudinal sectional view of a portion of an irrigating pipe, having nozzles to which my improved screens are applied, one of which is shown incentral longitudinal section taken on line 1 1 of Figure 2;

Figure 2 is an -under side fragmentary View of the same, one of the nozzles and its screen being shown in transverse section taken on line 2-2 of Figure l;

Figure 3 is a side view (reduced in size) of said pipe illustrating nozzles having my screens applied thereto;

Figure 4 is a transverse sectional view of the pipe taken on line 4 4 of Figure 3;

Figure 5 is a view of a blank or foraminous sheet from which the screen is formed; and

Figure 6 is a side view of the screen formed by bending said blank or sheet.

In the embodiment of my invention chosen for illustration by the drawings and for detaileddescription in the body of this specification, a portion of a horizontally disposed pipe 1 through which water for irrigating or sprinkling passes is shown, to which pipe are applied a plurality of nozzles 2, spaced apart at desired intervals. As thus illustrated, these nozzles are threaded into openings through the wall of the pipe. Each nozzle has a passage therethrough, the inner portion 3 of which passage is cross-sectionally larger than the vent or outer portion 4 thereof. A screen 5 hollow-cylindrical in form is seated in the inner portion of said passage through the nozzle and, as shown, extends outwardly beyond the inner end 6 of the nozzle and into the interior of the pipe l.

These screens are formed from a blank shown in Figure 5, being a foraminous sheet (as of brass or the like) having a substantially-rectangular body portion 7 and adjacent one end of said body portion a plurality of extensions 8 tapering outwardly' toward their extremities or points 9; and said blank has preferably also a slightly tapering portion l0 adjacent the blanks opposite end.

This blank is fashioned to form the screen (particularly well shown in Figure 6) by bending into hollow cylindrical form its middle or body portion 7 and bending the extensions 8 toward and into contact with each other to form a hemispherical closed end 11 of the screen; and by bending the slightly tapering portion 10 of the blank into slightly tapering frustro-conical form seen in Figure 6.

The screen thus formed is seated in the enlarged portion 3 of the nozzles passage by thrusting thereinto the frustro-conical portion l0 of the screen, and is held in such portion of the passage by the wedging contact of the frustro-conical portion of the screen therewith. The end 11 and the hollow cylindrical body or middle portion 7 of the screen extend intothe pipe l, so that the water passing through the nozzle must first pass through the foraminous body porby solid matter in suspension in the water is screened out.

It will be seen that the bent over eXtensions 8 of the screen, extending as thus bentV transversely to the cross-section of the cylindrical portion of the screen, hold said tion 7 and closed end l1 of the screen, where- Y tion, a. slightly tapering end portion .and a plurality of outwardlytapering extensions adjacent its opposite end, the body portion of the sheet being bent into hollow cylindri- 5 cal form the ta erin@ end Doi'tion beino' a D l bent into hollow frustro-eonioal forni, und the extensions belng bent toward and into GEORGE E. MARCH.

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