US1141169A - Gravel screening and washing machine. - Google Patents

Description

C. P. BIESANZ. GRAVEL SCREENING AND WASHING MACHINE.

APPLICATION FILED .IAN. 2h I9I5. I

Patented Jun 1 1915.

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C. P. BIESANZ. GRAVEL SCREENING AND WASHING MACHINE.

APPLICATION FILED JAN. 21. 19I5.

Patented June 1, 1915.

THE NORkIS PETERI (20., PHOTO-LITHQ. WASHINGTON. D. C

C. P. BIESANZ. GRAVEE SCREENING AND WASHING MACHINE.

APPLICATION FILED JAN. 21, I915.

Patented J 11116 1, 1915.

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CHARLES P. BIESANZ, 0F WINONA, MINNESOTA, ASSIGNOR T0 BIESANZ STONE COMPANY, OF WINONA, MINNESOTA, A CORPORATION OF MINNESOTA.

GRAVEL SCREENING AND WASHING MACHINE.

Application filed January 21, 1915.

To all whom it may 0011061 11:

Be it known that I, CHARLES P. BIESANZ, a citizen of the United States, residing at WVinona, in the county of Winona and State of Minnesota, have invented certain new and useful Improvements in Gravel Screening and lVashing Machines, of which the following is a specification.

This invention relates to a machine for screening and washing gravel, sand, stone, coal, coke or the like, and has for its primary object the provisions of a plant or machine adapted to separate difierent sizes of stone, coal, coke, sand or gravel fed thereto and to place the same in suitable storage receptacles.

A further object of the invention is to provide a machine of the character set forth which shall be simple to operate, cheap to manufacture and economical.

A still further object of this invention is to provide a gravel screening device with means for separating the sand from the gravel and conveying the same to suitable storage receptacles.

With the above and other objects in view as will hereinafter appear, this invention consists in the peculiar arrangement and combination of various related elements of the gravel separating machine as will be hereinafter described and more particularly set forth in the appended claims.

Referring to the accompanying drawings forming a portion of this specification and in which similar reference characters indicate similar parts wherever used: Figure 1 is a top plan view of a machine constructed in accordance with the preferred embodiment of this invention; Fig. 2 is a side elevation partly in section; and Fig. 3 is an end View partly in section.

The numeral 4 designates a framework preferably rectangular and forming a chamber or bin 5. Extending across the top of the bin 5 is a cross member 6 sup-- ported at its outer end by a bracket 7 and carrying transverse members 8 and 9 upon which are uprights 10 and 11 supporting by means of cross bars 12 and 13 a rela tively large hopper 11 adapted to be fed with water by means of a pipe 15 connected with any suitable outside source. Extending from the hopper is a discharge pipe 16, extending downwardly at an angle below the horizontal. I

Specification of Letters Patent.

Patented June 1, 1915. Serial No. 3,508.

Mounted upon uprights 17 and 18 and adapted to revolve in bearings 19 and 20 is a shaft 21 having a collar 22 keyed thereto and provided with a flanged extension 23. Supported by the flanged collar 23 and eX- tending upwardly to cover the discharge end of the spout 16 is a frusto-conical screen 21 composed of wire cloth, perforated metal, or other suitable material of relatively large mesh adapted to be held rigid by means of a, metal hoop 25 at the outer end thereof.

Carried upon the outer periphery of the flange 23 are angle irons 26 and 27, supporting a frusto-conical screen 28 composed of wire cloth, perforated metal, or other suitable material, the mesh of which is slightly smaller than that of the material of the screen 24. The screen 28 surrounds the screen 24 and the screen 28 is closed at the end nearest the hopper by the flare of the screen 24. A metal band 29 serves to hold the screen 28 rigid. Extending from the band 29 is a third screen 30 composed of very fine wire, perforated metal, or other suitable mesh material. This screen is supported by means of angle irons 31 and 32 and is held by means of an outer hoop 33. For the purpose of facilitating these screening operations solid sheets 25 of metal or other materials in the shape of a skirt or frustum of a cone are attached to the respective screens, so that all material passing through said screen sections where they are surrounded by this blank skirt or blank frusto-conical section, is caught by said blank section and carried to the rear or small end of each screen section, thereby causing all material which passes screen section 21 to pass over more of the full length of screen section 28 from the fact that it is deposited at the rear or small, closed end section 28. Also all material passed through screen section 28 where it is surrounded by the second blank skirt or blank frusto-conical section 25 is caught by said second blank section and carried to the rear or small end of screen section 30, thereby causing all material which passes screen section 28 to pass. over more of the full length of screen section 30. The skirt of metal 25", frusto-conical in shape and of about the same degree of flare as screen section 24;, is fastened on top of screen 241, where said section 24 fastens onto flanged collar 23. This skirt section incloses scr en sec ion 21 and s 1e and 27 are then placed ing asuitable distance 30 40 each end of the screen section 20 blank.

21 by 50 ing a wheel 35 on the shaft 21 and a wheel circles the place where screen section 24 fastens onto flanged collar 23. This solid skirt extends from this point of support about two-thirds way to the front edge of screen section 24. The angle iron supports 26 between this solid section and the screen section 28 and the bolts passing through the angle iron, blank skirt section, screen section 24 and flanged collar 23, hold all of them in place. The

second blank skirt 25 is attached to the screen section 28, and is made slightly larger in diameter, so that it is away from the outer surface thereof. This second blank sklrt is retained in this position by the same method of fastening as was above described,

and extends from this point to about :fi-rds of the'way to large end of screen section 28. The angle irons 31 and 32 are then placed between this solid section and screen sec tion 30. On screen section 24, the perforations or mesh openings begin at inner edge of the flanged collar and extend to within a suitable distance from the edge of the open end of the screen section 24, leaving a suitable distance 24 of the edge blank on the open or large end. On screen section 28 the perforations or mesh openings extend to within a suitable distance from the two edges, leaving a suitable distance 28 of the 35 twoedges on each end of the screen section 28 blank. On screen section 30, the perforation or mesh opening extends to within a suitable distance from the two edges, leavof two edges on The blank edges on the screen section are for the purpose of bolting or fastening the screen sections together and also for pro viding an extension or lip, so that the screened material will be delivered clear and not interfere with the material which passes each screen section.

Rotary movement is imparted to the shaft means of a sprocket chain 34 engag- 36 upon a shaft 37 journaled in suitable bearings 38 and 39 and having a wheel 40 which is in turn driven by means of a sprocket chain 41, driven by a wheel 42 upon a shaft 43 journaled in suitable bearings 44 and 45. Upon the shaft 43 is a fly wheel 46 driven by a belt 47 from an electric or other motor 48 of any suitable type which is located outside of the bin 5 and inclosed by means of a casing 49. V Directly beneath the open end of the screen 24 and in communication with a bin 51 is adownwardly extending spout 50. In communication with the open end ofthe frusto-conical screen 28 e-fi-is a secondtrough 52 in communication with a third bin 53 and provided beneath the open end of the screen 30 is a deflector plate 54 adapted to guide the material issuing from the mouth of the screen 28 into the bin 5 above mentioned.

Below the screen 30 is a U-shaped member 55 preferably formed of sheet metal and sloping downwardly away from the direction of discharge of the screen 30. Below the discharge end of the member 55 is provided a hopper 56 pivotally mounted upon a shaft 57 and adapted to be oscillated in any suitable manner. At the lower end of the hopper 56 are provided two openings 58 which empty into a trough 59 which may be placed in communication with any suitable bin or storage receptacle. Two buifers for the hopper 56 are provided at the lower end thereof and comprise a leaf spring 60 secured to the side of the bin 5 and carrying a buifer plate 61 adapted to be engaged by the lower edge 62 of the hopper 56, thus permitting the sand which settles to the bottom of hopper 56 to ooze out of and between 58 and 61. This spring buffer also prevents hopper 56 during its oscillatory movement from striking the side of the bin 5. The hopper 56 is provided at its upper end with a spout 63 adapted to discharge the waste water in the hopper into a pipe 64 provided therefor.

The operation is as follows: The material to be screened is dumped into the hopper 14 where it is wet by means of water from the pipe 15, as above explained, and a rotary motion given to the shaft 21 which causes the three screens mounted upon the flanged collar 22 to revolve. The material from the hopper 14 passes downwardly through the spout 16 and into the initial screen 24 whereupon all material smaller than the mesh of the screen 24 will pass therethrough and into the second screen 28, the oversized material running out of the open end of the screen 24 and onto the chute 54 and into the bin communicating therewith. The material which has been screened through the screen 24 passes into the screen 28 as above stated and is there screened by the screen 28, the smaller material passing therethrough and into the third screen 30 and the oversized material running out of the open end of the screen 28 and into the conveyer trough 52 and the bin in communication therewith. The material which has been screened through the screen 28 is further screened by the screen 30, the very fine particles of material which fall through the screen 30 falling onto the U-shaped member 55 and the oversized material running out of the open end of the screen 30 where, by means of the deflector plate 54, it is guided into the bin 5; The very fine material which rests upon the plate 55 runs down into the hopper 56 from which it is fed by means of the oscillatory movement thereof out of the hopper and into the trough 59 to any suitable receptacle.

I realize that considerable variation of the details of my invention may be resorted to without departing from the spirit thereof, and it is not my intention to limit myself to the specific details herein shown and described, but to construe the claims as broadly as the state of the prior art will permit.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

1. In a screening machine, the combination with a framework, of a shaft mounted thereon, a collar on said shaft, a screen mounted on said collar, a skirt for said screen, a second screen carried by said first mentioned screen and said collar, a skirt for said second screen and a third screen carried by said second screen and its skirt.

2. In a screening machine, the combination with a shaft, of a flanged collar thereon, an outwardly flaring screen mounted thereon, an imperforate skirting inclosing a portion of the inner end ofthe screen and supported by the collar, a second inwardly flaring screen mounted upon said first mentioned screen, a plurality of brackets between said second mentioned screen and said collar, an imperforate skirting mounted upon said second mentioned screen and in closing a portion of the inner end thereof, a third outwardly flaring screen mounted upon said second mentioned screen and a plurality of brackets carried by said second mentioned skirting adapted to support said third screen.

3. In a screening machine, the combination with a shaft, of a collar mounted thereon, an outwardly flaring frusto-conical screen mounted upon said collar, a hopper provided with a spout adapted to discharge into the interior of said screen, a trough adapted to receive the material discharged from said screen, an inwardly flaring frustoconical screen mounted upon said first mentioned screen, a plurality of brackets carried by said collar adapted to support said second mentioned screen, means adapted to receive material discharged from said screen, an outwardly flaring screen supported by said second mentioned screen, means Copies of this patent may be obtained for five cents each, by addressing the adapted to receive the material discharged from said third mentioned screen and means adapted to receive material sifted by said third mentioned screen.

4. In a screening machine, the combina tion with a shaft provided with a collar, of an outwardly flaring frusto-conical screen mounted thereon, a second inwardly flaring frusto-conical screen mounted upon said first mentioned screen, a frusto-conical imperforate skirting carried by said first mentioned screen adapted to convey material sifted therethrough to said second mentioned screen, a plurality of brackets between said collar and said second mentioned screen, a third screen supported by said second mentioned screen, an imperforate frusto-conical skirting carried by said second mentioned screen adapted to feed material sifted therethrough to said third mentioned screen, a plurality of brackets between said skirting and said third mentioned screen adapted to support the same and means adapted to supply material to said screens.

5. In a screening machine, the combination with a framework, of a plurality of standards mounted thereon, a shaft carried by said standard, a flanged collar on said shaft, an outwardly flaring frusto-conical screen mounted on said collar, a hopper provided with a spout discharging into said screen, a frusto-conical imperforate skirting carried by said collar and adapted to inclose a portion of the inner end of said screen whereby to collect and convey mate rial discharged therethrough, an inwardly flaring conical screen mounted upon said first mentioned screen, a plurality of brackets carried by said collar adapted to support said second mentioned screen, an inwardly flaring imperforate frusto-conical skirting supported by said second mentioned screen, a third screen mounted upon said second mentioned screen and said second mentioned skirting and independent means for conveying and storing material sifted by each of said screens.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES P. BIESANZ.

Witnesses:

NANNETA STARK, W. J. SMITH.

Commissioner of Patents,

Washington, D. G.

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