Патент USA US2110384код для вставки
March 8, 1938. M. c. REYNOLDS 2,110,334 EGG TREATING METHOD Filed Jan. 27,’ 1956 22 ,L 27 Z2 Z6 10 16' Il " - ‘ _ 1520672207’: Mezruzn CR6 rzoZcia ‘a 7776 ‘J ' Til} . Y @5 2,110,384 Patented Mar. s, 1938 PATENT OFFICE ‘UNITED STATES 2,110,384 EGG TREATING vMETHOD Marvin 0t Reynolds‘, Chicago, Ill. Application January 2'1, 1936, Serial No. 60,911 ' 5 Claims. __(c1. 99-113) _ of tank I0 generally cylindrical in construction, My invention relates to the treatment of eggs in preparation for ordinary use or for drying or having a bottom II and a false bottom l2 to as sure the delivery of material in the tank to a canning the same. It relates more in particular drain spout l3. I to an improved process by means of which the ' _ Slightly above the bottom I2 I provide a screen 14. This screen is supported in position by suit able means such as shown in the drawing. A ring I6 is brazed or welded to the side walls of 5 eggs are strained and other advantages secured as will appear from the following description. In the industries relating to the preparation and use of products prepared from egg material, which may be yolks, whites, :or mixed yolks and 10 whites, many different processes have been em the tank. A ?anged ring I‘! is supported above the ring l6. Cross members i 8 have .their ends secured to the ?anged‘ portion of the ring I‘! ployed. Experience has taught those skilled in 10/ whereby to support the screen 14 in the manner shown. The screen I4 has an annular ?ange l9 secured thereto, adapted to engage ‘on the out side of vthe ?ange on the ring ll. In this man 15 ner a ?rm support isprovided for the screen l4 and it is readily removable for cleaning or the like. A small ring 2| is attached to the screen to facilitate its removal. The tank is provided with a_hinged cover 22. 20 . At the top of the tank a ?ange 23 is provided be acter of the egg product. , It has been suggested in the past to strain eggs tween which ?ange and the cover 22 a gasket 24 is compressed when the cover is clamped in posi by pumping them continuously through a so called line strainer or ?lter, a reciprocating pis-‘ tion. This produces a substantially air-tight joint. A plurality of suitable locking members is 25 ton type of pump, or a rotary “Viking” type of pump being utilized. While certain advantages ' provided. In the drawing I show pin 26 hinged to the top of the tank and adapted to extend into are obtainable by this method of treatment, an edge recess of the cover 22. A wing nut 21 there are certain disadvantages inherent in the is provided to vclamp the cover tightly against a process and which cannot be overcome with such washer or gasket. It is understood, of course, ~30 apparatus. ' - the artthat comparatively minor variations in the treatment of egg products often have very signi?cant and important results upon the char acter of the ?nal egg product produced. For example, the amount and character of agitation to which egg materials are subjected in the course of handling them, particularly whether or not’ the agitation occurs in the presence of air, 20 often have an important bearing upon the char that any, other quick opening cover attaching Accordingly, the principal object of my inven ticn is the provision of an improved process for _ means may be employed. handling liquid egg material. Near the top of the tank I connect a pipe 28 h leading from a source of air supply under pres sure ‘with a valve 29 for controlling the admis Another object is the provision of an improved v35 process for straining liquid egg products, par ticularly liquid egg whites. 1 3| is connected by suitable means, to the top and . bottom of the tank so that- at any time the amount of egg material present in the tank can Other objects and features of the invention will be apparent from the consideration of the '40 following detailed ‘description taken with the accompanying drawing wherein the single figure be determined. illustrates one general type of apparatus which may be employed in accordance with my present course, if desired be in the form of a glass panel set directly into the side of the tank. In general, ' however, a sight glass of the type shown in the invention. ' ‘ -‘ ported in a tank or container by means of '?uid 7, ‘pressure, through a transversely disposed screen, ers. more in detail hereinafter. A ‘ In'the single ?gure I show a conventional type ' ' The screen I4 may be of several different types and may be either a woven mesh screen or a ' preferably circular or disk shaped, supported at and improved functions which I shall describe This sight glass 3| may, of 40 drawing is satisfactory. This is similar to the usual water level tubes employed in steam boil 45 In general I accomplish the objects of my in 45 vention by forcing the liquid egg material sup or near the bottom of the container. Preferably, 50 air or other gas pressure is employed to force ‘the egg material through the screen. By means of this process I secure very de?nite advantages 35 sion of‘air to the top of the tank. A sight glass . - perforated plate. For egg whites a mesh wire screen having about; 40 meshes per inch produces 50 good results. For whole' eggs I may employ a perforated plate containing 90 to 100, 11; inch diameter, perforations per square inch. Before describing the manner in which the tank and screen ‘shown in the drawing are em 55 72,110,384 the straining action. The material which is being use of this method causes a very much better dispersion of the treating material throughout the egg material and a more homogeneous and uniform product is produced. Ordinarily, treating materials of various kinds 8 to 10 per cent of salt as disclosed in Epstein ' '» . ~ 10 ' An additional advantage of the use of in present method is that much less agitation of the eggs takes place than in othersuggested screen ing methods and less-air is emulsi?ed with the are employed in the egg material such as about l5 \ incorporated with the egg material is not readily passed through the screen until it is in a ?nely divided or dissolved condition. Accordinsly, the 10 the product is frozen and maintained in a frozen .condition in a warehouse until ready for use. . ' The screen employedin the bottom of the con tainer, quickly builds up a mat which improves ployed, I shall explain brie?y the manner in which eggs are handled in conventional practice. The eggs after candling are broken, the yolks and whites separated, if a separate yolk or white product is to be produced-,or the whole egg may be employed if a mixed yolk and white product is to be produced. The egg product is ordinarily packed in a tinned metal can which holds 30 pounds of egg material. After packing in the can Patent No. 1,730,879, or an'improving substance ‘egg material. I have found that with a large batch of eggs present in the tank II, the relative. such as those described in the recently'issued patent to Harris et al. No. 2,026,631. These surface in contact with the air under pressure is . > very small. Moreover, that surface is not broken added materials must be thoroughly mixed, dis solved or dispersed inthe egg material. In addi- ' up and there is no opportunity of entrapping air tion, particles of shells that ?nd their way into the egg material, foreign matter which might be introduced, and chalazae should be removed if a good product is to-be produced. 7 One method that has been employed is to pump the egg material continuously-through a line'strainer to produce a homogeneous product with substantially no hits ‘of shells and the like present, and then to deliver the screened liquid mechanically. The resultis quite surprising in that even after comparatively long standing suf ficient air is not introduced into the eggs to cause any noticeable foaming after the release of pres sure as, for example, when the eggs are delivered to a standard can. In ordinary practice, how ever, the eggs are in contact with air under pres-7 sure, of course, only a relatively short time. The use of ‘a circular or disk like screen has very great advantages in that it is easily removed and very easily cleaned. While my present in in the previously screened egg material. From vention does not lend itself to continuous opera this mixing and treating tank the liquid egg ma -tion,.but rather requires “batch operation”, it terial was withdrawn, weighed out in cans and offers advantages not possessed by methods sug egg product to a mixingand treating tank where the additional material added was incorporated then delivered to the freezing room. - . gested for continuous operation. This is partic- - In the use of my present invention, I place ularly true since continuous operation is not sat approximately’ 300 pounds of an egg material - isfactory'in any event when a de?nite amount of which has not been previously treated, except addition substance'is to be introduced into the possibly with a simple gravity strainer or over _ The screen employed is disposed transversely of a cascade, to remove any large pieces of shell that may be present. This egg material is then the tank, as distinguished from ‘a line strainer, for treated by the addition thereto of whatever example, which is disposed longitudinally of a treating material is to be employed, for example conduit or container in which it is housed. The 8 to 10 per cent of ordinary sodium chloride. strainer which I employ has an effective ?ltering For the purpose of mixing the sodium chloride, I surface either slightly less than, or not appre may if desired utilize mixing arms in the tank Ill ciably greater than, the cross sectional area of the eggs. » . - itself or preliminary mixing of the salt and egg _ tank, although it may be made conicalor convex, material may be done by hand. Instead of mix or have‘some shape other than ?at, in order to ing the treating material with the eggs in the increase its strength, if desired. tank “I, thetreating material may be added be Where I refer to the use of air pressure it is to be understood that‘ I wish toinclude use . fore the egg material is'delivered to the tank III. of any unobjectionable di?icultly water-soluble This depends somewhat on the material being in troduced and the most convenient arrangement gas, such as nitrogen, hydrogen, etc.,_ and the which can be made available for introducing the . term “gas” is used in the claims to include either , egg material into the tank III. For example, the air or such a gas. It will be understood, of course, that I employ egg material may be‘ introduced ?rst'into a stor age tank placed above the tank l0 so that the the term “pressure” in a relative sense; that is to say, there should be a pressure differential be egg material can be run by gravity from the stor age tank into tank Ill. tween the gas' (air)_ab_ove the eggs, and atthe The egg material with the treating material ' Present which has been introduced either in the tank It. or before delivery to tank i0 is now discharge; Whether pressure above atmospheric be employed above the‘ egg mass, a partial vacP uum at the outlet, or a combination of the two, forced out of the tank III by closing the cover 22 ‘ is of course immaterial. and introducing air through the air line 28. Or I have described my invention in consid- ‘ dinarily not more than about 40 pounds‘ of air is 'erabledetail toassistthoseskilledintheartin practicing the same, but I do not limit myself to necessary above the egg material to have suf ?cient ?uid piston effect to expel the eggmaterial. the speci?c details‘ described, the invention being One advantage is that the egg material may be weighed out directly, the valve attached, to the drain spout l3 being opened or closed at will. During the time that the drain spout is closed limited only by the scope of the claims. . ' What‘I claim as new and desire to protect by Letters Patent'of the United‘ States is: > 'v ' 1. The method ofrtreating liquid egg material, 19, the pressure above the egg material remains stat ic and no harm will result such as would take place if a positive acting pump were being em which comprises introducing the liquid .egg ma ployed to force the egg material-through the screen therein, closing the top of said tank, and f "_ introducing presure into said tank 75‘ -75 screen. 1 terial into a relatively large capacity tank pro vided with a relatively large area ?ne mesh 3 2,110,884 above the level of said egg material, whereby to force‘ the said egg material through said screen. comprises providing a container having a sub tial area‘and thickness, and applying pressure of a gas directly against the surface of said liquid downwardly through said ?lter without foaming 10 and whereby strings, chalazae and foreign mat ter are removed from the liquid egg meats and stantial depth and. cross sectional area and hav 2; The method de?ned in claim 1, wherein ing a ?ne mesh ?lter substantially coextensive egg modifying material is incorporated in said with the cross sectional area of said container egg material while in said tank and before the in '_ and disposed near the bottom‘ of said container, ?lling said container with liquid egg meats to a troducing of gas under pressure therein. 3. A method of treating liquid egg meats which substantial height above said ?lter, and then comprises providing a body of said liquid egg applying pressure of a gas directly against the surface of said liquid egg meats to force them meats in a container, said body having substan egg meats to force them through a ?ne wire ?lter without foaming and whereby strings,v chalazae, and foreign matter are removed from the liquid 15 egg meats and the latter are thinned out and rendered homogeneous. 4. A method of treating liquid egg meats which the latter are thinned‘ out and rendered homo geneous. . ' ' 5. The method de?ned in claim 4, wherein the 15 liquid egg meats treated consist of egg'whites. MARVIN C. REYNOLDS.