US2656682A

US2656682A - Irrigation flume outlet

Info

Publication number: US2656682A
Application number: US326004A
Authority: US
Inventors: Russell L Wold
Original assignee: Individual
Current assignee: Individual
Priority date: 1952-12-15
Filing date: 1952-12-15
Publication date: 1953-10-27
Anticipated expiration: 1970-10-27

Description

Oct. 27, 1953 R. L. WOLD 2,656,682

IRRIGATION FLUMEI OUTLET Filed Dec. 15, 1952 2 Sheets-Sheet l INVENTOR. iiusselll. h Old V HTTORNEY- Oct. 27, 1953 I R. L. WOLD 2,656,632

IRRIGATION FLUME OUTLET Filed Dec. 15, 1952 2 Sheets-Sheet 2 IN VEN TOR.

HTTORNE Y.

Russell .L. l fiold Patented Oct. 27, 1953 IRRIGATION FLUME OUTLET Russell L. Wold, Lihue, Kauai, Territory of Hawaii Application December 15, 1952, Serial No. 326,004

8 Claims.

This invention relates to fiume for irrigation systems and, more particularly, to fiume outlets through which a portion of a fiume stream may be locally diverted.

The primary object of this invention is to provide a fiume outlet capable of being easily opened or closed with a manipulating stick without requiring the irrigator to stoop over so that, in a fiume system having a series of such outlets spaced therealong, the irrigator may open or close outlets as he walks along, barely pausing at each outlet.

Another object of this invention is to provide a fiume outlet, the parts of which are unobstrustive and integral with the fiume so that the fiume sections may be handled and stacked without loss of time due to removing separable outlet parts.

In my prior Patents 2,527,046; 2,527,047; and 2,527,048 the fiume outlets there disclosed are most useful on relatively steep grades of approximately 4% and above, down which the velocity of the fiume stream is relatively high. The subject invention has particular utility for flat-land irrigation where the grades do not exceed 4%, but where still it is desired to dispense a portion of the fiume water through an opening in the lower part of the fiume. Basically, the invention contemplates the provision of an outlet opening in the lower part of the fiume,

and a rubber tab slightly larger than the opening and having one edge secured to the fiume on the upstream side of the opening. When the tab lies above the opening it prevents water from flowing out, but when the free end of the tab is forced downwardly through the opening, there it will stay so as to funnel water out through the opening. A further object, in the above organization of elements, is to provide an upwardly arched bump in the fiume bottom on the downstream side of the outlet opening so that the latter acts as a scoop, when the flap is pushed downwardly through the opening, for shaving off a definite portion of the passing fiume stream and directing it downwardly through the outlet opening.

Yet another object is the provision of a fiume having controllable outlets which can be opened or closed with relatively untrained labor, and

which can be inexpensively embodied in exist-' ing fiume types without appreciable revision of the manners of handling or laying out the fiumes.

These and other objects will be apparent in the following specification and drawings, in which:

Figs. 1, 2 and 8 are a diagrammatic sections illustrating the fiume outlets in the three characteristic phases of operation;

Fig. 4 is a plan view of a fiume embodying the outlet, with the outlet closed;

Fig. 5 is a section along the line 55 of Fig. 2 looking in the direction of the arrows;

Fig. 6 is an sometric view of a fiume with the flap open; and

Fig. 7 shows the fiume when coupled by its top flange, to form a tubular pipe.

Referring now to the drawings, in which like reference numerals denote similar elements, a typical fiume 2 formed of sheet metal is provided with an opening 4 through its bottom. An upstanding half blister 6 is bumped in the fiume bottom adjacent one edge of opening 4 so that when the fiume is arranged with the half-blister on the downstream side of the opening, a portion of the fiume stream is shaved off and diverted downwardly and outwardly through the opening.

Cemented on the inside of the fiume bottom adjacent the upstream side 8 of opening 4 is one end of a rubber tab ill, of sufficiently large extent to slightly overlap all edges of the opening and with its free end 13 overlying the top of blister 6 when the tab is in the closed position illustrated in Figs. 3, 4 and 5. Tab I0, while it is larger than opening 4, is suificiently resilient and deformable so that its free end l3 may be jammed downwardly through opening 4 to its open position and will remain so disposed due to the jamming of its side against the sides of opening 4.

Tab [0 may be moved to its open or closed positions by a manipulating tool l4 having a hooked end It. Referring to Fig. 1, the tab In is shown after its free end 13 has been pushed through opening 4 so that water will be diverted outwardly. Fig. 2 illustrates the manner in which manipulating tool 14 may be thrust downwardly through opening 4 so as to engage the free end I3 with hooked end 16. Then, by lifting upwardly on tool [4, tab l0 may be pulled back upwardly through opening 4 and, after hooked end I6 is disengaged, tab l0 flattens out against the bottom of fiume 2 as shown in Fig. 3 so as to close the opening 4.

It will be apparent from the drawings that neither half blister 6 nor tab I0 will interfere with the nesting of fiume sections, one inside the other. In operation, when the tab I0 is closed. there are no sharp surfaces on which trash may catch, and the weight of the water on the top ot the tab tends to seal it against the inner surfaces of the flume so that there is practically no leakage.

The invention described above is not limited to the details illustrated, but is intended to cover all substitutions, modifications and equivalents within the scope of the following claim:

I claim:

1. In combination, an elongate flume havin an opening through a lower portion thereof and a tab having one side thereof secured to said flume adjacent one side of said opening, said tab being larger than said opening and being adapted to lie substantially flat against the bottom of the fiume so as to close said opening, and being of flexible material whereby a portion of said tab may be pushed through said opening so as to permit flume water to divert therethrough.

2. In combination, an elongate flume having an opening through a lower portion thereof, and a tab having one marginal edge portion thereof secured to said home adjacent one side of said opening, the remaining portion .of said tab bein free or said flame, said tab being larger than said opening with said remaining mar inal ed e hontions thereof normally overlappin the edges of said opening whereby said tab normally closes said openin said tab being of flexible material whereby the free portions thereof may be pushed throu h said opening to permit .flume Water to divert therethrmilgh 3- .In combinations-1.1 elon ate dome ha in n openin through a lower portion th reof. said ooonhis hav n oppos te ends spas d .from one another lon itud nally along stant ally fla ta hav n one roar d e po tion th r of se ur d n fa e enga ement against saidli me adja en ne of said ends of said openns, sa d t b being larg r area than sa d openns and havin all oth r marginal edge portion the eof ove pp n sa d fiume adjacent corresponding edges of said opening whereby to cons itu e a elosure f r aid op nin said t o being .of flexible material whereby a major portion thereof may be rced thr ugh s id openin so as to permit home water to divert therein-mush.

4. The combination claimed in claim 3, and an inwardly extending protuberance .on the inside 4 of said flume adjacent the opposite end of said opening.

5. In combination, an elongate fiume having an opening through the bottom thereof, said opening having opposite ends spaced from one another longitudinally along said flume, a substantially fiat tab having one marginal edge portion thereof affixed in face engagement against the inner side of said flume adjacent one of said ends of said opening, the remainder of said tab being free of fixed securement to said fiume, said tab being larger in area than said opening and having all other marginal edge portions thereof overlap- Pin said flume adjacent corresponding edges of said opening whereby to constitute a closure for said opening, said tab being or flexible material whereby the free portions thereof may be pushed through said opening so as to permit fiume water to divert therethrough.

.6. The combination claime in claim 5, said flume having a portion thereof at the other end of s id opening inwardly and transversely arched whereby to divert downwardly flume water flowing gainst s id other end of said opening.

7.. In combination, a trough-shaped sheetmetal .flume adapted to accommodate a stream of water flowin ther in from one end to the other, said flmne having an opening throu h the bottom ther of, said opening having upstream and downstream. ends with respect to said stream of water. and a flexible flat rubber tab of somewhat larger extent han sa d opening and normal y overlyin the some so as t f rm a clos re ther ior, said tab havi g one m rginal edge portion aflixed natwiso aga nst t e nner sid o the home bottom, th th r portions of sa d tab eing free of said flume whereby said free portions may be jammed downwardly through said flume t .form a diversionary trough.

8. The combination claimed in claim '7, the material of said mine at and immediately below the downstream .end of said opening being'bent upwardly and inwardly to form a half blister so as to divert a portion of said fiume stream downwardly through said opening.

No references cited.