US1293738A - Apparatus for extracting grease and oils from garbage. - Google Patents

Description

APPLICATION FlLED DEC. 2, |916.

Tfatenten Feb. 11, 191%).

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APPARATUS FORl EX'VTRACTVING GREASE AND OiLSF APPLICATION FILED DEclz, |916.

ROM GARBAGE.

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C. EDGERTON. APPARATUSYFOH EXTHACTING GREASE AND OILS FROM GARBAGE.

APPUCATIDN FILEII!l DEC. 2\ 1916.

Patented Feb. 11, 19179.

4 SHEETS-SHEET 3 WHW/mso C. DRN.A APPARATUS FOR EXTRACUNG GREASE AND OILS FROM GARBAGE. APNIC/NUN man 051:.2. 1915.

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rfns Parnu' CHARLES EDGERTON, F PHILADELPHIA, PENNSYLVANIA.

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Specication of Letters Patent.

Application filed December 2, 1916. Serial No. 134,650.

To all whom t may concern.'

Be it known that I, CHARLES EDGERTON, a citizen of the United States, and resident of Philadelphia, county of Philadelphia, State of Pennsylvania, have invented certain new and useful Improvements in Apparatus for Extracting Grease and Oils from Garbage, of which the following is a specification.

This invention relates to apparatus for use in extracting grease and oil from garbage and has particular reference to improvements in the apparatus shown and described in my copending application Serial No..

101,565, led June 3, 1916. The garbage is treated in the apparatus with a suitable solvent such as naphtha. Liquid grease and oil are then withdrawn and the remaining material is subjected to the action of heat to drive off the eXcesssolvent and moisture to produce a fertilizer.

One of the objects of the present invention is to arrange the steam heating coils, fittings and headers so that they will not in any way interfere with the agitation of the contents of the receptacle, and also so that these parts will be more easily accessible for repairs.

Another object of the invention is to provide a depression or trough in the false bottom of the tank to receive heavy foreign substances such as glass, nails, etc. which are often found in garbage.

The above and other objects and the novel features of the invention will be apparent from the following description taken in connection with the drawing in which,

Figure l is a side view of an apparatus embodying the invention, parts being broken away to disclose the construction of the interior;

Fig 2 is a plan view of the same, with parts broken out to show details of construction' Fig. 3 is a central sectional view of the apparatus taken on the line 3 3 of Fig. 2;

Fig. 4 is a plan View showing a portion of another apparatus embodying my invention;

Fig. 5 is a cross sectional View taken on the line 5-5 of Fig. 4, and

Fig. 6 is a. plan view of a portion of another apparatus embodying the invention.

The apparatus for treating garbage comprises a tank-like receptacle in the form of a metal shell built so as to sustain considerable inner and outer pressure. The shell is made up of a vertical cylindrical wall 10 which has a dome-like top wall 11 and a dish-like bottom wall 12 secured to it by rivets, the joints between these parts being easily accessible for calking or repairing. The bottom 12 carries beams 13 on its interior and a false bottom is supported on channel members 14 resting on the beams 13. The false bottoni consists of a plurality of superposed perforated plates or screen-like members, the lower member 15 being fastenedto the channel members 14 and the upper screen-like member 16 being movable with respect to the fixed member 15. The screen-like members 15 and 16 are provided with perforations which may be moved into and out of register to provide a perforate or an imperforate false bottom as required during the treatment of the garbage. While the garbage is being subjected to the action of the solvent the perforations in the screenlike members register with each other so that the solvent may flow through the false bottom into the basin formed by the bottom 12 from which it may be drawn oli" through the coupling 17.

Any suitable means may be provided for effecting the required relative adjustment between the screen-like members 15 and 16. In Fig. 1 I have disclosed al rod 18 which extends through the wall 10 of the shell and is provided at its inner end with means for engaging the top plate 16 to give it a slight turn about its pivot 24 to move the perforations into or out of registration.

The material to be treated is charged into the receptacle through a door 2O in the top 11 and suitable sight openings 21 are also provided in the top to enable the operator to observe the progress of the action within the tank. Other openings are provided for withdrawing the gases generated in the receptacle. The receptacle is provided with an outlet door 22 in the side wall 10 and just above the false bottom through which the finished material is discharged. The door 22 is also of sutlicient size to permit the withdrawal of the parts within the tank so that these parts may be repaired or replaced.

The material within the tank is agitated while it is treated so as to circulate the solvent through the body of garbage and also to separate out heavy foreign substances such as glass, iron, stones, etc., which are undesirable since the garbage after its treatment is suitable for use as a stock food or as a fertilizer. The agitating mechanism comprises rotating blades 23 which are carried Patented Feb. 11, 1919.

on the lower end of a shaft 24 which is supported at its lower end on a bearing 25 and extendsupwardly through the top 11 and is mounted in a suitable bearing thereon. The shaft 24 is driven by means of two bevel gears 27 and 28 connected by suitable shafting and gearing to a driving pulley 29. A loose pulley 30 is also carried on the same shaft with the driving pulley 29 to release the agitating mechanism. A sleeve 31 surrounds the shaft 24 and keeps rags and similar materials from interfering with the operation of the agitating means. The blades 23 extend to the margin of the plates 15, 16 and move immediately over them. The arm 23 may also be used for discharging the finished product through the door 22.

The glass, nails, stones and similar foreign substances in the garbage gradually sink tothe bottom of the tank while the material is being agitated, and are worked out to the periphery of the plates 15, 16 constituting the false bottom. An annular trough 32 is located at the margin of the plates 15, 16 and is supported at one edge on the channel 14 and at the other edge on a suitable angle iron 33. The trough 32 thus constitutes a depressio-n below the level of the false bottom and will collect the heavier substances and, being perforated, the excess liquid will drain therefrom. When the treatment of the garbage is finished the desirable portion thereof may be swept out of the tank over the material in the trough by the blades 23. Then a suitable blade 34 may be attached to the end of a blade 28 to sweep the foreign material in the trough 432 to the front of the tank where it may be removed through the door.

During the treatment and agitation of the garbage in the tank it is subjected to heat to drive off the excess moisture and solvent. Heating coils 35 are supported on the beams 13 below the screen-like member 15 and are supplied with steam through the pipes 36 and 37. Two sets of segmental, nearly semicircular heating coils 88 are arranged on the outside of the vertical cylindrical wall 10. The heating coils 88 substantially conform to the curvature of the wall 10, are horizontally arranged and at their ends they are connected to vertical headers 39 byfittings 40. In the constructions shown in Figs. 1, 2 and 3, the heating coils 38, headers 39 and fittings 40 are entirely outside of the cylindrical wall 10 which gives a continuous uninterrupted surface on the inside of the tank so that there will be no parts in the way to interfere with the agitation operation. A covering 41 of suitable heat insulating material is built up around the steam coils 38, headers 39 and fittings 40 to prevent a waste of heat. The coils, headers and fittings being entirely on the outside of the tank will be more easily accessible for repairs than in the construction shown in my copending apy plication.

In the form of my invention shown in Figs. 4 and 5, the heating coils 381, headers 391 and fittings are disposed within the outside cylindrical wall 10 but a vertical cylindrical wall 101 is placed against the inner side of the heating coils and headers and adjacent the outer edge of the perforated trough 32. The shield or wall 101 is sectional so that it may be taken apart to get access to the coils and headers for repairs. This wall 101 also serves to reduce the friction of the moving body of garbage during agitation.

In the form shown in Fig. 6 the segmental coils 382 are disposed within the cylindrical wall 10 but the headers 392 and fittings 402 are outside of this wall so that the connections will be more easily accessible for repairs. The space between the coils at the front and rearris bridged by means of segmental plates 42 to make the inner surface more continuous and reduce the friction of the moving body of garbage. In other respects the constructions shown in Figs. 4, 5, and 6 are similar to the constructions shown in Figs. 1 to 3.

While the apparatus is shown and described in detail it is to be understood that various changes may be made in the construction without departing from the spirit of the invention.

Having thus described the invention, what is claimed and desired to be secured by Letters Patent is:

1. In an apparatus of the class described, the combination of a tank-like receptacle having a vertical cylindrical wall, and means for heating said receptacle and the contents thereof comprising a series of coils, and headers to which the ends of said coils are connected, said headers being located outside said vertical wall.

2. In an apparatus of the class described, the combination of a tank-like receptacle having a vertical cylindrical wall, and means for heating said receptacle and the contents thereof comprising a series of segmental steam coils adjacent said wall and coinforming to the vcurvature thereof, and vertical headers connected to the ends of the coil .and located outside of said cylindrical wal. l

3. In an apparatus of the class described, tie con'xbination of a tank-like receptacle having a vertical cylindrical wall, a false bottom within said receptacle, and means for heating said receptacle and the contents thereof above the fase bottom comprising two sets of horizontal segmental steam coils adjacent said wall and above said false bot-l tom, and vertical headers connected to the ends of the coils and located outside of said cylindrical wll.

4. In an apparatus of the class described,the combination of a tank-like receptacle having a vertical cylindrical wall, and means for heating said receptacle and the contents thereof comprising two sets of horizontal steam coils outside said wall and conforming to the curvature thereof, and headers connected to the ends of the coils and located outside of said wall.

5. In an apparatus of the class described, the combination of a tank-like receptacle having a vertical cylindrical wall, means for heating said receptacle and the contents thereof, comprising two sets of horizontal segmental steam coils outside said wall and conforming to the curvature thereof, vertical headers connected to the ends of the .coils, and a covering of heat insulating material fo-r said coils.

6. In an apparatus of the class described, the combination of a tank-like receptacle having a vertical cylindrical wall, means for heating said receptacle and the contents thereof comprising two sets of segmental steam coils outside said wall and conforming to the curvature thereof, headers connected to the ends of the coils and located outside of said cylindrical wall, and a protecting covering of insulating material for said coils and headers.

7 In an apparatus of the class described,Y the combination of a tank-like receptacle having a vertical cylindrical wall and a false bottom, means for heating said receptacle and the contents thereof comprising two sets of segmental steam coils extending around the outside of said wall above said false bottom, vertical headers connected to the ends of the coils and located outside of said cylindrical wall, and a protecting covering of insulating material surrounding the coils and headers.

8. In an apparatus of the class described, the combination of a tank-like receptacle having a bottom provided with apertures, means to open and close said apertures, agitating means within the receptacle above the bottom thereof, and a depression in the bottom of the receptacle to receive heavy solid substances which sink to the bottom when the garbage treated in said receptacle is agitated.

9. In an apparatus of the class described, the combination of a tank-like receptacle, a false bottom within said receptacle, agitating means within the receptacle above the false bottom, and an annular depression in the false bottom at the margin thereof to receive heavy foreign substances collecting in the bottom when the contents of the receptacle are agitated.

10. In an apparatus of the class described, the combination of a tank-like receptacle having 4a vertical cylindrical wall and a false bottom, means for agitating the contents of the receptacle above said false bottom, and a perforated annular trough at the margin of the false bottom to Vreceive foreign substances which sink to the bottom when the contents of the receptacle are agitated.

11. In an apparatus for treating garbage, the combination of a tank-like receptacle, a false bottom Within said receptacle comprising a plurality of superposed relativelyA adjustable screen-like members, means for agitating the contents of the receptacle above the false bottom, and a perforated annular trough in said false bottom adjacent the margin of said screen-like members.

12. In an apparatus for treating garbage, the combination of a tank-like receptacle havingavertical cylindrical wall and a false bottom, a door in said cylindrical wall above the false bottom, a depression in the false bottom to receive foreign substances contained in the garbage, and means for agitating the contents of the receptacle above the false bottom and also for discharging all the treated garbage from said receptacle except the substances in said depression.

13. In an apparatus for treating garbage, the combination of a tank-like receptacle having a cylindrical wall, a false bottom within said receptacle comprising a plurality of superposed relatively adjustable screenlike members, said false bottom also having a perforated annular trough at the margin of said screen-like members adapted to receive heavy foreign substances contained in 100 the garbage, a door in said wall above the false bottom, and means for agitating the contents of the receptacle above the false bottom and also for discharging from the receptacle all of the material on the false 105 bottom except the substances in said trough.

14. In an apparatus for treating garbage, the combination of a tank-like receptacle having a vertical wall provided with a door,

a false bottom in said receptacle below said 110 door, an annular trough in said false bottom to receive foreign substances contained in the garbage, means for agitating the contents of the receptacle above the false bottom and also for discharging therefrom all 115 of the material on the false bottom except the foreign substances in the trough, and means for clearing the foreign substances from the trough.

In testimony whereof I aiix my signa- 120 ture.

CHARLES EDGERTON.

Witness RUSSELL MORITZ.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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