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US1966181A - Process of rendering - Google Patents

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Publication number
US1966181A
US1966181A US436401A US43640130A US1966181A US 1966181 A US1966181 A US 1966181A US 436401 A US436401 A US 436401A US 43640130 A US43640130 A US 43640130A US 1966181 A US1966181 A US 1966181A
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United States
Prior art keywords
rendering
rendered
mixture
heating
streams
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Expired - Lifetime
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US436401A
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English (en)
Inventor
Thomas K Lowry
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Darling Ingredients Inc
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Darling and Co
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Filing date
Publication date
Application filed by Darling and Co filed Critical Darling and Co
Priority to US436401A priority Critical patent/US1966181A/en
Priority to DED60533D priority patent/DE584478C/de
Priority to GB6778/31A priority patent/GB374438A/en
Application granted granted Critical
Publication of US1966181A publication Critical patent/US1966181A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
    • C11B1/00—Production of fats or fatty oils from raw materials
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
    • C11B1/00—Production of fats or fatty oils from raw materials
    • C11B1/12—Production of fats or fatty oils from raw materials by melting out

Definitions

  • Another object of this invention is to provide a heating unit which employs a maximum amount or" heating surface, thereby making it possible to use a heating medium at a lower temperature than isnecessary with apparatus now in use.
  • Another object of this invention is to provide means for circulating the material being rendered through a heating unit and for passing the heated material into a separator wherein the vapors are drawn off the heated substance.
  • Another object of this invention is to provide a continuous circuit for the material ,to be rendered which will enable the same to be passed sue-- cessively through the heating unit and the separator as many times as desire
  • Another object of this invention is to provide a heating unit having longitudinal passages therein for the material being rendered, the passages being sufliciently large to permit the passage therethrough of the material without any serious clogging effect on the passages. Means is provided for permitting ready ac cess to the passages to clean the same if they should become clogged.
  • Another object of this invention resides in dismaller masses individually to be rendered into a plurality and subjecting each of these I the action of heat.
  • Another object of this invention resides in flowing the entire mass to be rendered and dividing,the same into small streams each of which is s'urroundedby a heating me dium.
  • Another object of this invention resides in flowing the entire mass to be re ndered in a parent stream, dividing said parent stream into smaller streams all flowing substantially in the same direction, heating the smaller streams by a heating means surrounding each stream, and again reuniting the smaller streams aiter they have been heated.
  • Another object of this invention resides in the to be rendered in a closed path, and subdividing the stream of material being circulated into smaller streams at a point in of said material to be rendere the path of travel d, and heating each streams reunite and are carried along their path of movement to a chamber in which the moisture liberated during the heating by means of a vacuum, or
  • Another object of this inventi agitating of the mass over operation is removed in any other desired 6 manner, the residue continuing its movement along said closed path to the point wherein the material is again subdivided into smaller streams and heated while in that state.
  • a still further object of provide means for mixing or other rendered fat with this invention is to a quantity of tallow the meat to be rendered before the meat is heated to extract the tallow therefrom. Meat is to flow through the system by itself ordinarily, and therefore I prefer to use the tallow to act as a vehicle to carry the meat through the rendering apparatus.
  • FIG. 1 shows more or less diagrammatically an embodiment of my invention as applied tothe rendering of meats
  • Fig. 2 is a cross-section 2-2 0! Fig. l;
  • FIG. 3 shows a modified arrangement of the rendering apparatus.
  • the other system known as the "dry rendering system which is the most recent development, is supposed to be an improvement on the wet rendering system inasmuch as the heating of the steam is transmitted to the meat through a jacketed tank, and the steam does not itself come into direct contact with the meat.
  • the tanks which contain the meat to be treated must be provided with means for agitating the meat while it is being heated in order to bring the meat into contact with the heating surface and to prevent scorching.
  • This process eliminates tank water and the necessary operations in evaporating and drying the material after it is cooked. This process, while saving some in steam, necessarily consumes a considerable amount of power which is required in order to stir the material while in the tank.
  • dry rendering systems it is customary to hash or grind the material to a comparatively uniform size before cooking the same.
  • a disadvantage of the dry rendering processes which are now known is that the amount of heating surface is small as this heating surface usually comprises only a steam jacket.
  • steam under high pressure sometimes as high as 50#. If lower pressures or corresponding lower temperatures were used it would cut down the capacity of the machine and lengthen the time of cooking, whereas with the high pressure steam which is necessary in order to get the desired capacity, a portion of the material generally scorches and causes a discoloration of the tallow.
  • the material or mass to be rendered which may comprise such materials as meat, garbage, animal matter, fish, etc.
  • the parent stream is subdivided into a plurality of smaller streams which are each surrounded by a heating medium which is preferably out of direct contact with the material in the streams.
  • the streams are thereafter reunited into a single flowing stream forming the parent stream, flowing to a separator 29 where the material is subjected to a high degree of vacuum for the purpose of drawing off the vapors which were liberated from the material during the heating of the streams.
  • the material thereafter continues its path of movement as a single stream through suitable conduits back to the point in the path where the parent stream is subdivided into the smaller streams, the process being continued until substantially all of the moisture has been removed from the material and the tallow freed from the residue although still associated therewith in the mixture.
  • the material is agitated so that the means which divides the parent stream into a plurality of streams is not clogged by the accumulation of large particles of the material to be rendered or by bones, etc., straddling the dividing means which in this case consists of a perforated plate having a plurality of openings communicating with the passages through which the streams flow after divided from the parent stream. This agitation is accomplished in the present instance by the substance being flowed in wearer the proper direction to agitate the material adjacent the dividing means as will appear hereinafter.
  • the numeral 1 represents a mixing tank having a steam jacket 2 surrounding a portion thereor.
  • the steam jacket 2 is provided with an inlet a and an outlet 3.
  • a rotatable shaft 5 is journaled in suitable bearings in the brackets 6 and 7 secured to the sides of the mixing tank 1.
  • a pulley 8 on the upper end thereof may be connected by means of a suitable belt to a source of power so that the shaft 5 may be rotated when desired.
  • this shaft may be rotated in any other suitable manner, and I do not wish to limit myself to a pulley and a belt drive therefor.
  • the rotatable shaft 5 carries mixing paddles 9.
  • a quantity or material is placed within the mixing tank 1 along with a quantity of tallow, and as the shaft 5 is rotated paddles 9 stir the tallow and material to thoroughly mix the same.
  • the mixture is then heated slightly by means of the steam in the jacket 2 and the tallow acts as a vehicle for carrying the material through the system and for transferring the heat from the heating surfaces to the material itself.
  • the valve 10 which up until this time has been closed, is opened to permit the mixture to drain out of the hopper by gravity through the pipe 11 and downwardly towards the pump 12.
  • the pump 12 is of the centrifugal type and is capable of handling large pieces of solid material as well as liquids. Such pumps are of a well known variety and are commonly used for pumping sewage and the like.
  • the pump 12 forces the material through the conduits 13, 1a and 15 through the valve 16 which is open at this time and into the heating unit designated generally as 17.
  • the heating unit comprises an outer shell 18 which is cylindrical in cross-section and heads 19 and 20 are fitted over the end or the shell 18.
  • a plate such as 21 is made integral with the end of the shell 18 at each end thereof, or if desired, this platemay be made separate from the shell.
  • Tubular members '22 have their open ends fitted within suitable openings in the plates 21 and form passages communicating with the interiors of the heads 19 and 20.
  • a second plate at the other end of the shell and similar to the plate 21 receives the other ends or the pipes.
  • the material is introduced through the conduit 15 and valve 16 into the heating unit 17.
  • a short section of pipe 25 connects the valve 16 with the head 19 and is so arranged that the material enters the head 19 at a tangent causing the mixture to be thoroughly circulated within the head 19 transversely of the longitudinal dimensions of the pipes and causing the mixture to be evenly distributed to all of the tubular members 22 and preventing the clogging of the pipes by bones or large pieces of meat which might otherwise come to rest straddling the open ends of the tubes and remain there thus preventing other material from passing into the pipes.
  • the pressure exerted on the mixture by means of the pump 12 forces the mixture through the tubular members 22 downwardly into the lower head 20, and the mixture escapes through the bottom of this head through the conduits 26 and 28 to the separator 29.
  • the separator 29 is in the form of a hollow chamber and contains the battles 30 arranged in the manner illustrated.
  • the pipe 31 communicating with the upper end of the separator is adapted to be connected with any suitable source of vacuum or may be in communication with a suitable condenser of any well known construction.
  • the purpose of the separator is to remove the vapors from the mixture. As the material passes through the heating unit 1'7, the mixture of course is heated or cooked, and this rise in tem- 'perature liberates a certain amount of moisture when the mixture reaches the separator 29 due to the fact that the degree or pressure within the separator causes the moisture to change into a vapor and be carried an through the conduit 31.
  • the bailies 30 are for the purpose of preventing entrained particles from being drawn out of the separator through the conduit 31.
  • valve 10 is closed so as to cut out the mixing tank during the cooking operation.
  • the mixture within the separator 29 communicates by means of a valve 32 and conduit 33 with the pump 12, and with the valve 32 open the pump crculates and re-circulates the substance through the conduits 13, 1 and 15, valve 16, conduit 25, heating unit 1'7, conduits 26 and 28, separator 29, valve 32 and pipe 33, and forms a closed circuit through which the substance is or may be repeatedly circulated.
  • a single circulation of the mixture through the circuit just described is not sufliicient to drive all of the moisture out of the mixture and therefore it becomes necessary to circulate the mixture through the circuit several times.
  • the material asit enters the separator begins to froth and tends to rise in the separator and the amount of froth may be determined by looking through the transparent openings 34 in the wall of the separator. a predetermined degree the operator may determine when the rendering has been carried on a sufiicient length of time.
  • T '35 which communicates with a valve 36.
  • T 37 between the conduits 26 and 'i' 38 which latter has one branch thereof communicating with the conduit 28, and another communicating with the T 37.
  • the T 37 also communicates with a valve 39.
  • the cross 41 When the frothing lessens to communicates with the pump 12, conduit 11 and conduit 33. The remaining connection of the cross communicates with the T 38 by means of a valve 42.
  • a T 43 is arranged between the conduit 15 and valve 16 and one. branch thereof communicates with the conduit 44 by way of the valve 45.
  • valves 36, 39, 42 and 45 remain closed, whereas the valves 32 and 16 remain open, it being understood of course, that the valve 10 is also closed immediatelyafter the mixture has all been introduced into the circulating system.
  • I may do this in either of two ways. I may open the valves 39 and 36 and permit the material to drain out of the system and in order to break the vacuum within the separator 29 and heating unit 17, I provide pet cocks 46 and 47 communicating with the atmosphere and with the interiors of the separator 29 and heating unit 1'7 respectively.
  • valves 39 and 36 When ejecting the residue by means of the pump 12 I leave the valves 39 and 36 closed and close valve 16. I also open valves 42 and 45 and permit the valve 32 to remain open. -Pet cocks 46 and 47 are also opened so that the interior of the heating unit 1'7 and the separator 29 communicate with the atmosphere. As the pump 12 is operated the residue is drawn from the heating unit 17 and separator 29 and is forced through the conduits 13, 14 and 15, T 43, valve 45 and conduit 44 to any desired position. In this manner practically the entire system is cleaned out and the apparatus is now ready for the cooking of a new batch of the mixture of meat and tallow.
  • This new batch may be mixed while the cooking of the previous batch is taking place, so that as soon as the residue is driven out of the system the valve 10 may be opened to permit the mixture to be drawn into the system for circulation, thereby reducing the amount of time necessary for the carrying out of the process'.
  • the arrangement of the conduit 25 is such as to provide a rather uniform distribution of the meat to the various tubular members 22, and insures that the material will be forced through all of the tubular members at substantially the same rate.
  • the tallow which is used in conjunction with the material being rendered to flow the material through the system also acts as a heat exchanging medium which distributes the heat from the heating surfaces of the tubes and causes a more even distribution of the heat to the material being rendered whereby there is less tendency for the material to be scorched.
  • the general appearance of the tallow is improved and is rendered more saleable.
  • the tallow produced in this manner is also of a higher quality than the tallow which has been scorched even slightly during the cooking operation.
  • the cooking process is speeded up due to the fact that I have provided a greater amount of heating surface per quantity of material cooked than has a suitable vacuum source which may be a vacuum pump-and a condensersuch as a surface condenser or a jet condenser in case a high vacuum is necessary or it may be a condenser of any other type.
  • a suitable vacuum source which may be a vacuum pump-and a condensersuch as a surface condenser or a jet condenser in case a high vacuum is necessary or it may be a condenser of any other type.
  • a suitable vacuum source which may be a vacuum pump-and a condenser such as a surface condenser or a jet condenser in case a high vacuum is necessary or it may be a condenser of any other type.
  • condensers are common in the art to which this invention pertains and to the related arts, and no description thereof is deemed to be necessary for the complete understanding of the process
  • Fig. 3 I have illustrated a modified apparatus for carrying out my process.
  • the steam jacketed mixer 50 similar to the mixer 1, as shown in Fig. 1 has a rotatable shaft 51 and mixing paddles 52, the mixer being surrounded by a steam jacket 53.
  • the conduit 54 in this form of the invention I have illustrated the conduit 54 as communicating with the interior of the mixer at a point above the bottom of the mixer. This is for the purpose of permitting any foreign solid particles such as crockery, pieces of metal, and the like' which are often found in the raw material to gravitate to the bottom of the mixer and the same may then be drawn out of the mixer at any desired time through the valve 55 and conduit 56'.
  • the heavy foreign solid substances are not apt to travel downwardly through conduit 54 to the pump 55 which corresponds to the pump 12 in Fig. 1. While these solid substances will pass through the pump 55 without clogging, still the same substances may clog other parts of the apparatus and it is desired to rid the material being rendered of any foreign solid substances before the same is carried into the heating unit.
  • the mixer 50 therefore acts as a separator or classifier. It will be understood also that this form of mixer may be used with the apparatus illustrated in Fig. 1 in place of the mixer shown in that apparatus.
  • the material drawn from the mixer 50 passes through the valve 57 and downwardly through the conduit 56 into the pump 55.
  • the pump pumps the material through the conduit 58, conduit 60 and valve 61 into the upper part of the casing indicated generally as 62.
  • the upper part of this casing 62 forms a separator 63 and the lower part forms a heating unit 64.
  • These parts correspond to the separator 29 and heating unit 1'7 illustrated in Fig. 1 and perform the same function although in perhaps a slightly different manner.
  • the heating unit 64 is provided with tubular members 65 extending longitudinally thereof, the
  • a partial vacuum is maintained within the separator 63 by means of asuitable vacuum producing unit communicating with the interior of the separator by means of the conduit 70.
  • Baflles '71 and transparent openings 72 similar to the bailies 30 and transparent openings 34 shown in Fig. 1 are, provided for the separator 63 and perform the same functions as these parts 30 and 34.
  • the vapor escapes from the heated mixture and passes out through the conduit 70, the baffles 71 acting to separate the entrained particles from the vapor.
  • the mixture is again passed downwardly through the tubes 65, is again heated and forced back into the separator by means of the pump 55 where again some of the moisture is driven off through the conduit 70. This process is continued until the operator determines that the mixture has been cooked a sufiicient length of time.
  • the operator desires to remove the material from the system, and in order to do this he closes the valve 61 and opens the valve 73 which communicates with the conduit 60.
  • the pump 55 is thereafter used to pump the material through the conduit 60, valve 73 and conduit 74 to any desired place. It will be understood, of course, that the valve 57 is closed after the mixture has been drawn out of the mixer 50 and remains closed until it is desired to place a new quantity into circulation.
  • the material may be drained out of the system by gravity. Thisis accomplished by opening the valve 59 instead of the valve 73 and permitting the material to flow by gravity out of the heating unit'64 and the separator 63 in a manner similar to the way in which the material is drained out of the separator 29 and heating unit 1'7 shown in Fig. 1 through the valves 39 and 36.
  • the pet cock 75 is used to break the vacuum with in the separator to permit the material to be expelled by the pump or drawn off by gravity through the valve 59.
  • the material may flow from. the bottom of the heating tank to the top instead of from the top to the bottom as illustrated without departing from the spirit of this invention.
  • vegetable oils may be usedas the vehicle for conveying the substance instead of fats. This is particularly desirable in producing compound lards.
  • Cotton seed oil which is often used in producing compound lards has to be deodorized before it will be found desirable for use in the compound lard. This deodorizing is ordinarily accomplished by placing the oil in a vacuum chamber and passing steam into the oilthe steam removing the foreign matter which gives the odor to the oil.
  • This invention also can be used in the rendering of flsh and sea animals and has found its application particularly in the rendering of whales in the whaling industry.
  • a process of rendering meats, garbage, and the like comprising the steps of flowing the substance to be rendered simultaneously through a multiplicity of stationary heated passages arranged close together, maintaining said passages substantially filled with the substance to be rendered at all times, removing the volatile matter from said cooked material, passing said heated material through stationary heated passages after some of said moisture has been removed therefrom with a subsequent step of removing additional moisture from the heated material after said last mentioned step of passing the material through heated passages.
  • a rendering process comprising the steps of flowing a quantity of the substance to be rendered simultaneously through a plurality of narrow heated stationary passages, the walls of which are not spaced substantially over six inches from each other, and drawing off the vapor liberated from the material being rendered during the flowing of the solid material through said passages, and collecting all of the material flowing through said passages and flowing all of the same through a common passage.
  • a process of rendering comprising the steps of flowing material to be rendered simultaneously through a plurality of stationary narrow substantially heated passages with the material being rendered conveyed through said passages solely by a fluid of the same character as that produced by heating the material, and removing the moisture from said material liberated by said heating process until only a small percentage of the moisture remains in said material.
  • a process of rendering comprising the steps of flowing material to be rendered simultaneously through a plurality of narrow stationary substantially unobstructed heated passages while cenveyed by a fluid which evaporates at a higher temperature than that used in the rendering process under the conditions in which the said material is rendered, heating the material to be rendered to a temperature to liberate the moisture therefrom, and removing the moisture from said material after it is liberated until only a small percentage of moisture remains in said material.
  • a process of rendering comprising the steps of mixing a quantity of solid material to be rendered with a quantity of fat, flowing parts of the mixture substantially simultaneously through a plurality of stationary unobstructed narrow heated passages, and continuously removing the moisture from said mixture as the same is liberated.
  • a process of rendering comprising the steps of mixing a quantity of solid material to be rendered with a quantity of fat, flowing parts of the mixture substantially simultaneously through a plurality of stationary unobstructed narrow heated passages, and continuously removing the moisture from said mixture under vacuum as the same is liberated.
  • a process of rendering comprising the steps of mixing a quantity of solid material to be rendered with a quantity of fat, flowing parts of the mixture substantially simultaneously through a plurality of stationary unobstructed narrow heated passages, continuously removing the moisture from said mixture as the same is liberated, and repeating each of the steps of flowing the mixture through stationary unobstructed narrow heated passages and removing the moisture as many times as necessary to remove the desired amount of moisture therefrom.
  • a process of rendering comprising the steps of flowing a substance through a plurality of stationary narrow heated passages, feeding said plurality of stationary heated passages simultaneously through a common supply passage and agitating the material to be rendered adjacent the ends of the passages to which the material is supplied to prevent the clogging of the material adjacent the ends of said passages.
  • a process of rendering comprising the steps of flowing a substance through a plurality of stationary narrow heated passages, feeding said plurality of stationary heated passages simultaneously through a common supply passage and agitating the material to be rendered adjacent the ends of the passages to which the material is supplied by directing the material to be rendered through said common supply passage in a direction to cause a complete circulation of the material adjacent the ends of said passages as said material is supplied to the ends of said passages through said common supply passage to prevent the clogging of the material adjacent the ends of said passages.
  • the process of rendering which includes the steps of comminuting the mass to be rendered, then subdividing the mass into smaller masses and causing them to flow in separate individual streams, and surrounding said streams with, and subjecting them to, the action of heat.
  • the process of rendering meat, garbage, and the like which includes flowing the mass to be rendered in a parent stream, subdividing the parent stream into a plurality of downwardflowing smaller streams, imparting to the main stream at the point where it subdivides into the smaller streams, a rotary motion substantially in a plane perpendicular to the smaller streams to thereby agitate the mass and to distribute the larger particles of solid matter to prevent clog ging of the smaller streams, and individually and simultaneously heating said smaller streams.
  • the process of' rendering meat, garbage, and the like which includes the steps of flowing the mass to be rendered in a parent stream, subdividing the parent stream into a plurality of downward flowing small streams, imparting a rotary motion substantially in a horizontal plane to the main stream at the point where it subdivides into the small streams to thereby agitate the mass and distribute the larger particles of solid matter to prevent clogging of the small streams, and individually and simultaneously heating said small streams.
  • the process of rendering which includes the steps of positively circulating the mass to be rendered in a single parent stream, then subdividing the mass into smaller masses and causing them to flow in individual similarly moving finer streams, and surrounding said streams with and subjecting them to the action of heat.
  • the process of rendering which includes the steps of positively circulating the mass to be rendered in a single stream, then sub-dividing the mass into smaller masses and causing them to flow in individual similarly moving finer streams, subjecting said streams from all sides to the action of a heating medium, and separating said streams from said heating medium to avoid direct contact therewith.
  • a process of rendering comprising the steps of mixing a quantity of solid material to be rendered with a quantity of fat, dividing the mixture into smaller masses and flowing the same simultaneously through a multiplicity of stationary narrow heated passages, removing the volatile matter from said mixture as the same is liberated therefrom, thereafter again passing the solid material and fat through said narrow heated passages and again removing the moisture liberated therefrom, and repeating these steps as many times as necessary to drive off the necessary amount of moisture from the material, without separating the heated fat and fluid products of rendering from the material, whereby said heated fat and fluid products of rendering will act as a vehicle to carry the material through the various steps of the process while the moisture is being liberated and withdrawn from the mixture.
  • the process of rendering comprising the steps of heating the solid material to be rendered to a temperature sufficient to release a portion of the fluid contained therein whereby said fluid acts as a vehicle to carry said material through the various stages of rendering, flowing said material and fluid simultaneously in a common stream, dividing said stream into a plurality of similarly moving finer individual streams, surrounding said streams with and subjecting them to the action of heat, thereafter again passing the said material while carried by said fluid back to the original common stream, removing the moisture liberated therefrom, and again dividing said stream into a plurality of finer individual similarly moving streams, and repeating these steps as outlined as many times as is necessary to drive off the desired amount of moisture.
  • the process of rendering meat and the like comprising the steps of pumping the material to be rendered in a parent stream, dividing the parent stream into a plurality of similarly moving finer streams, and surrounding said finer streams with and subjecting them to the action of heat.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Drying Of Solid Materials (AREA)
  • Meat, Egg Or Seafood Products (AREA)
  • Processing Of Solid Wastes (AREA)
US436401A 1930-03-17 1930-03-17 Process of rendering Expired - Lifetime US1966181A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US436401A US1966181A (en) 1930-03-17 1930-03-17 Process of rendering
DED60533D DE584478C (de) 1930-03-17 1931-03-03 Verfahren zum Ausschmelzen von tierischem Material
GB6778/31A GB374438A (en) 1930-03-17 1931-03-04 Process for rendering fatty materials and apparatus therefor

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US436401A US1966181A (en) 1930-03-17 1930-03-17 Process of rendering

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US1966181A true US1966181A (en) 1934-07-10

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2467529A (en) * 1945-01-04 1949-04-19 Hormel & Co Geo A Process for producing lardlike product
US2554138A (en) * 1944-09-14 1951-05-22 Mojonnier Bros Co Concentrating apparatus
US2690056A (en) * 1950-03-09 1954-09-28 Socony Vacuum Oil Co Inc Hydrocarbon conversion process and apparatus
US2911421A (en) * 1957-02-14 1959-11-03 Greenfield Charles Grinding and rendering of fat containing tissue
US3025315A (en) * 1959-05-27 1962-03-13 Wilson & Co Inc Method of processing animal fats
US3057699A (en) * 1958-03-24 1962-10-09 Boldon Continuous closed circuit apparatus for rendering animal matter
US3069442A (en) * 1959-08-10 1962-12-18 Coproducts Corp Process for treating fresh coconuts
US3158634A (en) * 1961-08-10 1964-11-24 Marsh Associates Inedible rendering process
US3282972A (en) * 1962-08-22 1966-11-01 Acme Process Equipment Company Method for the continuous rendering of organic material
US3303870A (en) * 1965-03-18 1967-02-14 Whiting Corp Evaporator apparatus
US3471534A (en) * 1966-02-03 1969-10-07 Cincinnati Butchers Supply Co Continuous rendering system
US3529939A (en) * 1966-02-23 1970-09-22 French Oil Mill Machinery Continuous rendering apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2412716B (en) * 2004-03-30 2008-02-13 Devrone Ltd Process of steam production from tallow

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2554138A (en) * 1944-09-14 1951-05-22 Mojonnier Bros Co Concentrating apparatus
US2467529A (en) * 1945-01-04 1949-04-19 Hormel & Co Geo A Process for producing lardlike product
US2690056A (en) * 1950-03-09 1954-09-28 Socony Vacuum Oil Co Inc Hydrocarbon conversion process and apparatus
US2911421A (en) * 1957-02-14 1959-11-03 Greenfield Charles Grinding and rendering of fat containing tissue
US3057699A (en) * 1958-03-24 1962-10-09 Boldon Continuous closed circuit apparatus for rendering animal matter
US3025315A (en) * 1959-05-27 1962-03-13 Wilson & Co Inc Method of processing animal fats
US3069442A (en) * 1959-08-10 1962-12-18 Coproducts Corp Process for treating fresh coconuts
US3158634A (en) * 1961-08-10 1964-11-24 Marsh Associates Inedible rendering process
US3282972A (en) * 1962-08-22 1966-11-01 Acme Process Equipment Company Method for the continuous rendering of organic material
US3303870A (en) * 1965-03-18 1967-02-14 Whiting Corp Evaporator apparatus
US3471534A (en) * 1966-02-03 1969-10-07 Cincinnati Butchers Supply Co Continuous rendering system
US3529939A (en) * 1966-02-23 1970-09-22 French Oil Mill Machinery Continuous rendering apparatus

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Publication number Publication date
DE584478C (de) 1933-09-20
GB374438A (en) 1932-06-06

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