US1038087A - Fish-screen. - Google Patents

Description

W. E. CLARK L H. I. STEVENSON,

. FISH SCREEN.

' APPLIGATION FILED 001223, my.

- Patented Sept. 10,1912.

'2 SHEETB-SHEET l.

W. E. CLARK & H. I. STEVENSON.

FISH SCREEN.

APPLICATION BILBD 00T. 23, .191,1.

2 ann-SHEET 2.

UNITED sTATns .PATENT OFFICE.

WILLIAM n. CLARK AND HENRY r. srEvnNsoN, or Borsa, Inmo.

FISH-SCREEN.

Specification of Letters .Patent PatentedSept. 10, :t9-12.

Application filed October 23, 1911. Serial No. 656,119.

To Aall Awhom may cofrtccrn.`

Be itlmown that We, WILLIAM E. CLARK and HENRY I. STEVENSON, citizens .of the United States, residing at Boise, in the county of Ada and State of Idaho, have invented certainnew and useful Improvements in Fish- Soreens; and we do hereby declare the following -to be a full, clear, and exact descripl -tion of the invention, such as will enable others skilled in the art-jto which it yapper- I tains to make and the saine. v

The present invention relates to anapparatus for obstruct-ing water courses, espe? cially irrigating ditches, for preventing' iish from going into the water distributing channels. v

The invention further proposes an appar'atus of this character wherein the same is self cleaning and automatically operable to provide, at practically all times, an effective obstructing barrier-in the channel and yet allowing a free end easy ow of the Water.

With these and other objects in view the invention consists in the novel details vof construction and combinations of parts more fully hereinafter disclosed and particularly pointed out in theclaims.

Referring to theaccompanying drawings forming a part of this specification in which like numerals designate lilrepar'ts in all-'the views -Figure 1 is a side elevational view,

partly in section, of the apparatus, and Fig.

2 is a top plan sectional vlew thereof taken on the line X-X of Fig. 1.

Referring to the construct-ion in detailthe apparatus consists in a wheel journaled within lsuitable bearings ina frame-work a longvv and graduallyinclined .section 4, and

an abrupt and shorter-inclined section 5 adjoining said section 4 and .providing there,-

with a raised bed for Athe water dow. The

bottom section 6 is disposed within the plane ofthe earthen bed 7 of the channel.

The wheel consists of two series of spokes 8 constructed of ordinary angle iron and secured to suitable metallic hub pieces 9. The

hub members 9. arejournaled to rotate on the shaft" 10, and said shaft is suitably mounted in the frame-work as above stated.

A plurality of screens 11 ishcarried cby the wheel, and each .of said screens .is securedv within a suitable angle iron frame 12. The screen frames l2 are each, at one end, pivotally secured, as at 13, to acorrespon pair ofthe spokes ,8, and are so mounts as to `depend from the wheel during the npward movement `of the screens .the pun ose whereof being to obtainV a self cleaning unci tion for such matter as has accumulated on the screen during. its obstruction of the water-way.

It is proposed .to have the water-way, 4at

practically all I times, obstructed by l one screen, and .to .this end the .Wheel is journaled adjacent the raised bed (4 and-5) of --the framefwork in such manner that-the acting :screen will rest .upon the inclined surface y5 .and project .slightly above .the water levl. which is indicated by the broken line 1n 1g. 1.

Immediately to `the rear of the acting screen is the screen which has just previously occupied vthe obstructing position,and which is now resting with its lower edge across the inclined surface 4. In this posi- `tion said screen also obstructs the waterway.

The water is assumed to be flowing in the -direction indicated by the arrow Y in Fig. 1,

andin so doing carriesthe solid-matter, such as leaves or other trash, against the acting` screen, and when the accumulation of this matter. has become suiiiciently large itv will, through the force of the flow of the water, cause the wheel to be rotated to effect the carrying off of such matter and to bring a rear'screen is caused to hang vertically as lindicated by the screen occupying that position in Fig. 1, when the front screen assumes the position just. occupied by the rear .clean screen into position. Inprotating, the

' screen. This operation of the screens allows 25 claims'.4

' 1L *An apparatus for preventing fish from' in Fig. 1, and on the further rotation of`the Wheel said scrleen is releasedi when it falls with a splash-m the Waterwayand assumes i s that position now taken bythe acting-screen as shown in Fig. l.

The splash of the falling screenyvill,- asl demonstrated actual practice,- .suffice-,t scare away any fish that may be loitering in the 'neighborhood of the front obstruct'" ing screen. As also demonstrated byl actual' practice the obstructing screen remains-in position for a period'of hours, and the. ac-

.tual time consumed in changing the screens is about twoseconds (2'. e. from the instant of splash to settling in position). vIn this respect 'the apparatus is understood as providing 'at practically alltimes, an obstructing barrier.

It -is obvious' that lthose skilled `in thev art may vary the details .of construction and arrangement of parts Without 'departing Afrom the spiritof our inventiom. and there- A fore we do not wish toLbe limited to such features exceptas may be required by the passing through a Water course comprising a Wheel; journal bearings for said wheel; a

plurality of screens swingingly mounted on saidwheel and disposed transversely of the Water course; anobstruction'for holding, at l all'times, one of said screens in active position; ,and an obstruction for intercepting and temporarily holding the next succeed- 'ing'screem substantially as described.

2. An `apparatus for preventing passin through a watercourse comprising a'whee journal bearings for said Wheel; a

plurality of screens swingingly mounted on .said Wheel and disposed transversely of the fish from" water course; an inclined surface for en gagingwitli and holdingvone of said vscreens in actlveposition; an lnclined surface for engaging with and-holding another screen in active'position; and an obstruction for intercepting and temporarily holding the

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