US1668671A - Hydraulic dredge - Google Patents

Description

Mayl 8,` 1928.

R. R. DILEY ET AL HYDRAULIC DREDGE Filed Seht. 1l, 1926 5 Sheets-Sheet 1,

3 NeUJ. MHA o ma En DVEA R WJ RL w May 8, 1928 1,668,671

R. R. nAlLl-:Y ET AL HYDRAULIC DREDGE Fle S693'. 11. 1926 3 Sheets-Sheet 2 642245. B7 ATTORN.

May 8, 1928.

R. R. DAILEY ET AL HYDRAULIC DREDGE Filed Sept. 11, 1926 3 Sheets-Sheet 31- .www

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INVENTORS Foy 7?..Darl geg Leray Vor-hres ATTOR Patented May 8, 1928.

UNITED STATES no! n. DAILEYAND Lenoir voimrns, oF ooLonAno SPRINGS, comme.

HYDRAULIC DREDGE.

Application. andl september 11, i928.- seriai Heisman Qur invention relates to 'suction dredges for the recovery of valuable metals from the beds of streams, and our ob-ject in general` iS to provide features, 1n this class of dredges whereby the bed of a stream may be loosened so as to facilitate the. pompino of the solid articles through conduitsto tlie slulco box. ore, specific objects are. to.- provide auxiliary agitating and loosening means to be used in, connection, with the agitating and screening device described in our Patent Number 1,597,586.; `to provide auxiliary means to remove, coarse waste material to the rear after the liner portions containing the values have been removedthrough the screening devices.;` to provide liftingmcans for the agitating and screening devices and means to. holdsaid devices in working engagement with the ground; and toiprovide actuati I means` tor the swinging, lift-ing and tbe oldingdown of saidagitatin'g and screening devices. Other objects-1 willA appear as the description progresses..

`E`igure I represents a side elevation of a dredge, containingxour improvements; Fig. 2, a plan view of Fig. l, partlybroken away; Fig 3, a, sectional elevation, partly broken away of Figi 1 on the line A-A; Eig` 4,8.. fragmentary sectional elevation of tbe agitating andl screening devicewith the discharge pipe ot the; auxiliary agitating device f installed therein,` drawn to, an -enimagedscale.;y` Fig` 5', a sectional elevation of1 the. agitatingand screen device on `the line B-B. in 4;` andFig.. 6, an eleva.- tion of a removalegrid screen plate.

Although `we show the preferred embodiment of. our improvements. we do not thereby limitourselvesto the preciso forms shown, but wishl it understood that various changes in. the. details of construction may be made within the. scope of Vwhat `hereinafter is claimed, without departing from the spirit of the invention.

Three. boats. l, 2 and 3. aie disposed side by Side und support a frame work composed` 0f longitndinalk beams 4, 5p, 6 and 7 Connected by transverse beams 8, 9, 10, 11, 121l and 12.".` Two longitudinal beams 13 and 1 4V are disposed on the transverse beams and extend ,the full llength of the.' frame. Two upright. beams 15 and 16. are` mounted on beams 4 and "l",l respectively, and support a transverse beam 17 braced by oblique beams 1 8.. Journals 1 9, 20 2.1 and 22 are mounted on transverse beam 17. A sleeve 23y .is provided with. al bearing 24` pivotally mounted on journal "19. A bracing beam 25 is secured toy sleeve 23 and carries a bearing 26 pivotally mounted on journal 20.` A crossbeam 25a is secured to beam 25 and` sleeve 23 to support sheaves which will hereinafter be described. A swinging beam 27 is slidal'ily mounted in sleevef23 and carries an agitating and screening device 28 provided -with removable grid screening plates A and removable shoes, B..` A beam 32 is pvoted to beam 27 at the top and ad justably connected at the `lower part by channels 33 and 34. Scoops. 35 and 36 are pivoted to beams 27 and 32., respectively. A centrifugal dredge pump 38` is mounted on beams 13` andV 14 and connected tot an operating electric motor 85.; A flexible in.- take conduit 39 communicates with the. agitating `and screening device 28 and an outlet conduit 401 leads "to the sluice box 41. A i'iiic 42 is disposed in sluice box 4l.` A cable 43 is attached` to transverse beam 8 and passes over sheave 44 to winding drum 45. A shaft 46, 'carrying a slieave47, s mounted in beams 6 and 7. A cable 4S is secured to shaft 46 and passes overv sheaves 49, 47 and 50 to a winding drum mounted on the same shaft as windingdrum 45. The clockwise motion ofwinding drum 45 wind cable 43 thereon andswings.u beams 27 and 32 to the rear of the boats. `The clockwise motion of the winding drum upon which i cable 48 is wound, swings beams 27 and 32 to the frontof the boats. e e i A. sleeve 23.a is `provided with a bearing 24* pivotalb7 mounted on journal 22. A bracing beam 29 is connected to sleeve 23 itndcarries a bearing 30 'pivotally mountedjon journal 21. A swinging beam 2,7 is slidably mounted in sleeve 23a and carriesan ag1- tat-ing and screening device like 28. A beam 32 .is pivoted to beam 27qat the top and connected by channels. The clockwise II1o` tion ofwinding drum 45 pulls cable 43l over sheave 44a and swings beams 27a and 32 to the rear of the boats. The clockwise Inotionof winding drum 45.* pulls cable 4.8*

over sheaves 49,, 47 a and 50a and swingsl said beams to the front.

The radial lifting means for the swinging beams 27 and. 32, comprise a winding drum 51, sheaves 52 and 53, and a cable, 54 secured to beam 27 and wound upon drum 51. A cable 54 is secured toA beamv 27*l and passes over sheaves 521 and `53a to.` winding drum 51". The anti-clockwise motion of winding drum 51 winds the cable 54 thereon and lifts beams 27 and 32, beam 27 sliding upward through sleeve 23. The anticlockwise motion of winding drum 51, winds cable 54'd1 thereon and lifts beams 27fl aud 32a radially.

In somel cases the weight of the swinging beams is not sufficient to hold the agitating and screening device in engagement with the ground and'we therefore provide auxiliary means to hold said devices in working engagement with the ground, These means comprise the winding drum 51, sheaves 62 and 63 and a cableV 61. The cable 61 is attached to beam 27 at the top and passes under sheave 52 and over sheave 63 to'the underside of winding drum 51. The clockwise motion of drum 51 winds cable 61 thereon and pulls beam 27 downward through sleeve 23. A similar cable 61l is attached to beam 27*l and passes under sheave 52 and over sheave 95 to the underside of winding drum 513. The clockwise motion of drum 51L winds cable 61Il thereon and pulls beam 2"a downward through sleeve 23.

Pump 38 is operated b v electric motor 85 and pump 38"", by electric motor 86. u

The actuating means for the main winding drums comprise a motor 64 provided with a drive shaft 65 upon which a worm 66 is mounted. A shaft 67 carries a worm gear 68. a spur gear 69 and a bevel gear 70. A shaft 71 carries a bevel gear 72 meshed with bevel gear 70. and a spur gear 72a. A main drum shaft 73 is journalled on longitudinal beams 4. 5, 6 and 7 and carries winding drums 45, 45, 45b and ay drum not shown. A spur gear 74 is mounted on shaft 73 and meshed with spur gear 7 2u. Suitable clutches 75 are provided to engage the winding drums mounted on shaft 73. A

A spur gear 69 is mounted on shaft 67 and a spur gear 78 is mounted on shaft 76. Gear 69 actuates gearl 78 via gear 77. Shift gears are contained in housing 79 and are operated by lever 80. Similar.shiftgears are contained in housing 79a and operated by lever 803. A worm and worm gear are mounted in housing 81 and actuate shaft 82 which carries spur gear 83. A gear 84 is mounted on the drum shaft of drum 51 and meshed with gear 83. A similar set of gears actuates drum 51.

The swinging beams carrying the agitating and screening devices are swung'forward and aft and at the same time the boats are moved slowly sidewise over newV ground. This sidewise movement is accomplished by operating cables and winding drums not shown, the cables being anchored on land. The boats are moved up stream or allowed to move down stream, by `suitable winding drumsl and cables not shown, the cables be- Y ing anchored up and down stream.

The solid particles with the water are sucked through grid pla-tes A into the right hand agitating and screening device 28 and travel through conduit 39, pump 38 and conduit 40 to sluice box 41 and over ritfle 42 to the rear where it is returned to the stream, the values being leftl in the sluice box. The

vwater and values entering the left hand agitating and screening device travels through conduit 39a, pump 38 and conduit 40l to sluice box 41 and over riflle 42 to the rear.

The scoops 35 and 36 remove the coarse waste material to the rear of the boats after the agitating and screening devices have removed the finer portions containing the values.

To insure efficiency the ground must be thoroughly loosened so that the values .can

be conveyed to the sluice box., I therefore l A similar discharge pipe is mounted in the left hand agita-ting and screening device and communicates with transverse conduit 88 via flexible conduit 89a. These discharge pipes may be made with a nozzle to insure greater force of discharge. The pump 90 draws the water throughconduit 91 and forces it through conduits 92, 88 and 89 and discharges itfwith great force through pipe 87. This water striking the ground with great force, loosens up a great deal more ground than is loosenedby the agitating and screening device alone, as the said device moves along in its swing.

The operating means for pum 90 comprise a pulley 93 mountedon sliaft 94, a

pulley 95 mounted on shaft 65 and a belt Y 96 mounted on said pulleys. 4

To increase the capacity, a` plurality of boats may be aligned side by side andspaced from each other. A swinging beam carrying an agitating and screening device may be mounted as described and disposed between each pair of boats and operated in the same manner as hereinbefore described.

lVe claim:

1. AThe combination of a floating support; a transversely disposed bea-m and supporting standards therefore, mounted on said floating support; a plurality of sleeves pivotally mounted on said transverse beam; a beam slidably mounted in each sleeve and adapted to carry an agitating and screening device on the lower end; a beam pivoted to the top of each slidably mounted beam and adjustably connected thereto at the lower portions; al scoop pivotally mounted on the lower end of each pivotally mounted beam,

and means to lift said slidably mounted beams through said sleeves; for the purposes set forth.

2. The combination of a floating sup rt; a. transversely disposed beam and stan ards therefor, mounted on said floating supporti; a plurality of sleeves pivotally mounted on sald transverse beam; a beam slidably mountedrin each sleeve; ak beam pivoted to the* top of each slidably mounted beam and connected thereto at the lower rtlon by channels; a scoop mounted on said piv-v slid through Said sleeves, and means to actuate said winding drums.

3. The combination of a floating support; standards mounted on said support; a transversely disposed beam mounted on said standards; sleeves pivotally mounted on sa-id transversely disposed beam, each sleeve carrying a beam slidabl mounted therein; a ground engaging mem er mounted on the lower end of each slidably mounted beam; a. cable attached to each slidably mounted beam; sheaves and a winding drum, whereby said slidably mounted beam is forced down to hold said ground engaging member in working position in the ground; a beam pivotally connected to the top of each slidably mounted beam and adjustably connected at the lower` portion and carrying a scoop pivotally mounted thereon.

t ROY R. DAILEY.

LEROY VORHIES.

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