Oil-extracting device.

Application filed June 5, 1011, Serial No. 831,440,

To all whom it may concern .·

Be it known that we, Charles Turner and Harry J. Flood, citizens of the United States, and residents of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Oil-Extracting Devices, of which the following is a specification, and which are illustrated m the accompanying drawings, forming a part thereof. ^{i J} & ^{Λ n}s^s>

I he invention relates to an apparatus for extracting oil from garbage and other materials and to that type of device in which the oil is extracted by the use of a solvent, tne operation being carried on continuously, the material to be treated being delivered to and discharged from the machine without interruption.

The objects of the invention are to generaHy improve devices of this character, simplitying the action and securing an increased efficiency.

, The character of the invention is fully hereinafter pointed out and is shown in the accompanying drawings in which—

Figure 1 is a longitudinal vertical section ot the machine as mounted in a building, some of the auxiliary parts being shown in elevation, Fig. 2. is a detail longitudinal vertical section of the apparatus some parts being shown in elevation, Fig. 3 is a sectional detail of a. safety vent used in the machine, Fig. 4 is a rear end elevation, _Oc?2^me,^of Parts being broken away, and 35 hig. o is a front end elevation, some of the parts being broken away.

The apparatus consists generally of a series of cylinders set at an incline and through which the material ’to be treated is 40 driven by. means of spiral conveyers and within which it is successively treated for washing out the oils by means of a solvent such as gasolene, rewashing for the purpose ot securing any oils which may have escaped 45 the first operation and steamed for the purpose pf recovering any of the solvent which may have remained in the material after the rewashing. The material is fed to ^the lower end of the first cylinder 50 through a hopper and as it is moved through this cylinder by the action of the conveyer, is washed by the solvent which is delivered to it through perforations in the , . “ - — ----------, - -fe- t· is U BCUtional detail of a. safety vent used in the cylinder through numerous small perforations in its wall to a receiving jacket from vxrittr-· ι ? inclosed and recStZde ^h ThZ a^.^ned to a suitable tW th.i—S ^drain PJP® ^ls so located UrLi A^Uld, ^accumulates within the jacket and the lower end of the cylinder to a level above the throat of the hopper thus constituting a liquid seal for preventing the escape of vapors through the hopper, From the upper end of the first cylinff^enir^^e+^m+n^eri^{al faIls throil}s^h a connect^P Pu ^to ΐθ ^{end of the} second cylinder through which it is passed and treated in similar manner, a liquid seal being theie maintained if found desirable for preventing vapors from passing back into the first cylinder. Prom the upper end of the second cylinder the material falls through a connecting pipe into the lower end of the ttord cylinder through which it is passed 75 in the same manner and from which it is charged through-a discharge pipe. In the third cylinder there is forced into the material through a hollow and freely per^Shaf- °^{f the conve}y^er5 live steam 80 which vaporizes any of . the solvent which may have been carried over from the second cylinder, the vapors escaping from the ^Ja2^{ket th}rough pipes leading to a suitable condenser. In order to prevent vapors from passing back from the third cylinder into the second an annular series of fine strain jets are delivered into the pipe connecting these two cylinders being directed downward and in order to prevent the escape of vapors through the discharging nipple a similar series of steam jets enter this nipple being directed obliquely upward.

The receiving hopper is shown at 10 and as delivering at 11 to the lower end of the cylinder 12 which is inclined upwardly, as shown, at an angle of about twenty degrees. Ί his cylinder is inclosed through the major portion of its length within a jacket 13, the inclosed portion of the cylinder being freely perforated, as indicated at 14. A spiral conveyer 15 is located within the cylinder i2, extending throughout its entire ‘ length and being .fixed upon a tubular shaft 16 journaled in the ends of the cylinder. A Κ^ρθ.Χ *^{he u}PP^{er end of} toe shaft conveyer ehaft, the otl and solvent escaping iVwiti SK iX^Vd byl£

100

105

1,024,230 stuffing box 18w. A solvent material such as gasolene is delivered to the shaft through the pipe 17 and from the shaft to the interior tof the cylinder through numerous fine ₅ perforations indicated' at 19. The solvent together with the oils washed out of the material escape from the cylinder through the perforations /14 into the jacket 13 from which they are discharged through a pipe 10 20 communicating with a receiving tank 21.

The pipe 20 is connected with the jacket 13 at a point slightly, above the throat of the hopper 11 and as a .consequence the-liquids accumulate within the lower end of the 15 jacket and cylinder so as to seal the hopper throat. The pipe 20 is «provided with a -valve as indicated at 22, by means of which the discharge of the liquids may be retarded thus raising their level within the jacket 20 and cylinder. Drain pipes 23, 24 lead from the jacket 13 at lower levels than the pipe 20 and afford means for completely discharging the jacket and cylinder of their liquid contents. These dram pipes; are pro25 vided with valves as indicated at 25, 26. A drain pipe 27 having a valve 28 leads from the extreme lower end of the cylinder 12. All of the drain pipes are shown as communicating with the tank 21.

From the lower side of the upper end ot the cylinder 12 there leads a pipe 29 through which the material is discharged into the lower end of the second cylinder 30 which with its accessories may be an exactdupli35 cate of the cylinder 12, there being present a spiral conveyer 31 mounted on a hollow shaft 32 journaled in the ends of the cylinder and having numerous fine perforations 33 opening to the interior of the cylinder; a jacket 34 inclosing the cylinder through a major portion of its length, the portion .ot the wall of- the cylinder which is thus -inclosed, being freely perforated as indicated at 35; a pipe 36 for delivering the solvent liquid to the upper end of the shaft 32:; a discharge pipe 37, drain pipes 38, 39 and 40, all provided with valves and leading from the jacket 34 and the cylinder 30 to a receiving tank 40^a.

From the lower side of the upper end ot the cylinder 30 there leads a pipe 41 for delivering the material to the lower end.ot the third cylinder 42. This cylinder with its accessories differs but slightly from the cyl55 inders 12 and 30. being inclosed through the major portion of this length within a jacket 43 and there being within it a spiral conveyer 44 fixed upon a tubular shaft 45 to the upper end of which there leads a pipe «0 46 and which is freely perforated, as shown at 47, to discharge into the cylinder 42. Drain pipes 48, 49 lead respectively from the lower ends of the jacket 43 and cylinder 42 to a receiving tank 50 and a header 51 •5 nnmmnni nates with, the chamber of the jacket 43 by means of a plurality of nipples, as 52, 53 and 54 which, lead through the upper side of_the wall of the jacket, a pipe 55 leading from the header 51 to a condens- , ing coil 56. A pipe 57 leads from the lower 70 side of the cylinder 42 at its upper end. A hollow belt 58 encircles, the. pipe 41 and to this belt there leads a pipe 59. An annular series of. downwardly inclined ports 60 lead from the chamber of the belt 58 -into the 75 chamber of the pipe 41 adjacent the lower end of the latter. A hollow belt 61 encircles the pipe. 57, a pipe 62 leads to the chamber of the belt and an annular series of up_Twardly inclined ports 63 lead from - the go chamber of the belt to the chamber of the pipe 57, entering it near its upper end.

The conveyers of the several cylinders are driven by means of a belt pulley 64 mounted upon a shaft 65 carrying pinions 66, 67 and 85 68 meshing with gear wheels 69, 70 and 71 fixed respectively upon the shafts . 16, 32 and 45. .

The solvent is supplied to the cylinder 12 through the pipe 17 by means of a pump, 90 conventionally shown at 72, the pump drawing from any suitable reservoir. In practice it is feasible to regard the tank 40¹ as the source of supply and in the drawings the suction side of the pump is shown as be- 95 ing connected with this reservoir by means of the pipe 73. .

The liquid discharged from the cylinder 12 is received in the tank 21 and consists of an admixture of gasolene, oil and consider- 100 able refuse matter. The oils separate out to some , extent and float on the gasolene. An overflow pipe 74 leads from this tank to a vaporizer 75 of any desirable construction where the volatile solvent which has been 105 carried over with the. oils is vaporized and passes through the pipe. 76 to the coil 56, and thence through the pipe 77 to the receiving tank 78. The oils and the refuse carried by them escape from the vaporizer 75 110 through a pipe 79 to a suitable separator represented at 80. <

The solvent for the re-wash of the material is fed to ’the cylinder 30 from the tank 78 by means of a pump 81 connected there- 115 with on its suction side by the pipe 82 and delivering through the pipe 36. The liquids discharged from the cylinder 30 are received in the tank 40^a. From this tank there leads an overflow pipe 83 to the vaporizer 75 for 120 carrying off such of the oils as may rise to the top. The solvent accumulated in this tank is'sufficiently pure -for use in the primary .washing which occurs in the cylinder 12. . “ ¹²⁵

Steam is carried to the Tubular shaft 45 and to the hollow belts 58 and 61 from any suitable source of supply through thO pipes 46, 59 and 62 respectively. . The vapors escaping through the perforations 47^a in the 130

1,054,230 cylinder 42 are, as has been stated, led to the coil 56 through the pipe 55. Any liquids which may accumulate in the jacket 43 are led therefrom by the pipe 48 to the tank 50 5 from which they are drained through the pipe 84 to the receiving tank 78, passing through a trap 85, of any approved form, where water, if any be present, is eliminated.

Safety vents 86, 87 are provided for the a £> cylinders 12 and 30 in order to-eliminate any danger from explosions should a fire be accidentally developed within these cylinders. The cylinders themselves are made of sufficient strength to withstand a high de1.6 gree of pressure. Each of the vents 86, 87 is closed by means of a frangible plate 88, preferably of glass, which will yield to a pressure much below that which the walls of _βη τι® ^cY^{linders a}F^e capable of withstanding. 20 Ine apparatus is shown in the drawings as being mounted in a building having two floors. The pumps, vaporizer, condenser, separator and final receiving tank are located in the lower compartment, the floor of 26 which is represented at 89. These parts of the apparatus are in common use and form no part of the present Tnvention.s • T^h? ^s,^everal cylinders and the tanks assooR f ^t.^herewith are mounted upon the floor 80 90 of the upper compartment and are car. ^ri,^ed ,^by ^any suitable frame, as 91, more plainly shown in Figs. 4 and 5. As this frame may be designed according to the . judgment of the manufacturer, it need not 86 be described in detail.

There may be associated with the cylinders 12. and 30 a glass gage for showing the ffiyel of the liquid within the cylinders. In i ^su?“ ^a K^aS^{e 92 is} associated with the 40 cylinder 12. ,

In the washing operation the solvent is not only discharged through the material radially but by reason of the inclined position of the cylinders it gravitates down46 wardly through the mass toward the lower end of the cylinder and its action in the material is thereby prolonged.