Патент USA US2403914код для вставки
My w» 2% E. G. EPPENBACH ET-AL VERTICAL MILL Filed April 7, 1942 5736 > 2 Sheets-Sheet 1 ' INVENTO RS [OW/IV GIfPPf/VBACH > mew/er IMJHAUG BY ?re/‘r ATTORNEY . Jul}? 11%» @416. “E. G. EPPENMQH ET AL V 2A®$i4 VERTICAL MILL’ > Filed April 7, 1942 2 Sheets-Sheet 2 INVENTORS _ Patented July 16,}946 ~ 2,403,914 UNITED STATES PATENT OFFICE 2,403,914‘ ‘ ’ VERTICAL MILL Edwin G. Eppenbach, Manhasset, and Henry Imshaug, Flushing, N. Y.; said Imshaug assign or to said Eppenbach 2 ‘ lClaim. 1 - I Application April 7, 1942, Serial No. 437,979 ‘ ‘a ' (01. 241-285) 2 - This invention relates to grinding devices or mills in general, and particularly to what may within the base“ interior. be termed a vertical milll from the motor is a vertical shaft i2. ' Abutting the insertion or the removal ‘of motor H located While thedevice is primarily intended to operate vertically, it may be placed and operated in any other desired‘posi tion. The device is adapted for ?nely grinding or milling either dry or ?uid matter, but is pref erably used for material suspended in fluids.‘ v It is especially adapted for handling dietary or medical substances, such as serum, andfor bring 10 ing these substances to any desired colloidal state. Its prime object is to provide a compact, rela tively simple and accurately operating and ?nely Extending’ upwards and associated with upper ?ange ill" of the base is a substantially dish-shaped element [3 form ing the support for an upwardly converging open frame work or structure I4. Dished element or support [3 overhangs the ‘body of the‘base. At the center of the support is an opening l5, motor I I being suspended from the peripheral ?ange of that opening into hollow base Iii. Spaced from support 13 and covering motor II and opening I5 and overhanging the latter is an upwardly dished, adjustable device of this type, which may be concentrically disposed centrally/apertured drip readily disassembled and re-assembled for steri- 15 guard l6, designed to effectively prevent liquid lization purposes, and wherein means are pro» or moisture from entering the base and damaging vided for not only milling substances and disthemotor. It will be observed that motor shaft charging them in their milled state from the dei2 Passes‘ Centrally through Opening i5 and vice, but whereby a sustained and continuous through drip guard l6.> ‘ milling operation, for any desired period,’may be 20 secured to and Supported by the reduced HD1391‘ provided until the required ?neness of the milled end of Open frame Structure I4 is a combination matter is reached journaling and adjusting member ll, consisting The foregoing and still further important ob- of a hub member IS with which is associated a jects and advantages of the present invention threaded adjustable cup l9, accommodating shaft will become more fully apparent from the ensuing 25 bearing 20. Cup l9 may be set in its adjusted description in connection with the accompanying DOSitiDn in respect to hub 13 by set screws 2!. drawings, wherein; > Within hub I8 is lodged and guided a sleeve 22, Fig. 1 illustrates an elevation of the device in which is threaded externally at 23 and is engaged its presently preferred form, shown partially in by an internally threaded and calibrated index section; 30 ring 24, by means of which ring sleeve 22 may be Fig. 2 illustrates an enlarged partial detail vie adjusted in upward or downward directions. of the grinding or milling mechanism; ' Sleeve 22 may be held in its adjusted position by" Fig. 3 is a similar illustration of a modi?ed means of set screw 25 engaging ring 24 form of the grinding or milling arrangement; ‘Within sleeve 22 and journaled in bearings 20 Fig. 4 is a bottom View of a portion of the stator 35 is rotor shaft 26. The latter is joined with shaft in one of its forms used with the grinder shown l2 of motor H by means of coupling 21, accessibly in Fig. 2; ‘ located within frame [4. Secured to shaft 26 is Fig. 5 is a top view of a rotor such as employed rotor 23, forming a part of the grinder 01' mill in the construction shown in Fig. 2; and unit of the device. Rotor 28 is exchangeable. Fig. 6 illustrates a top View of a rotor such as 40 The stator of the mill is indicated at 29 and also employed in the construction shown in Fig. 3. comprises an exchangeable member or insert, In Fig. 1 of the drawings there is illustrated which is supported by the broadened upper or a vertical mill structure in accordance with the ?anged end 30 of sleeve 22, and which broadened present invention. It broadly consists of four end forms the bottom of the mill casing, which major parts, that is, a base portion, an open mill- 45 houses the grinder unit. It will be seen that the‘ supporting portion, the mill and the hopper. The base portion comprises a hollow, relatively ' casing is provided with a water jacket 35, where by the casing, and therefore the grinder unit, may spacious base Hi provided with an outwardly ex be readily cooled or held at any desired tempera tending bottom or floor ?ange l0’ and an in ture required for the matter to be treated within wardly directed upper or supporting ?ange I 0" 50 at the top of the base. The base, although pref Above jacket 3| is a jacketed top member 32, erably placed upon the floor, may be mounted held together with flange 3!] of sleeve 22 by means and secured‘ at any desired position by means of of spacer bolts 33. Supported by upper jacket bolts, not shown, passing through ?ange [0’. structure 32 is a hopper 34, provided with‘ a cover The upper end of the base is open to permit 55 35, which may be completely closed if so desired. theidevice. ‘ p v. 7 2,403,914 3 ner as to provide precise cooperation between one another. In both constructions the rotor is not bodily adjustable, whereas the stator may be moved for adjustment in respect to the rotor By means of the jacket in member 32 the con tents of the hopper may be kept at any desired temperature. The top of the hopper is provided with an inlet 36 into which‘ is removably placed the end of the goose neck 31 forming the upper Cl through the arrangement of sleeve 22 and index ring 24, which latter may be fixed in any position portion of conduit 38, joined at its lower end with to hold the stator in its adjusted place. In this outlet pipe 39. The latter is connected at 49 with manner a very minute adjustment is possible be the grinder unit, and its discharge is controlled tween the grinding or work surfaces of the rotor by valve 4|. This valve may be so placed that it either provides a direct discharge from the 10 and stator, and any wear of these surfaces may be readily compensated by simply moving the in grinder unit through its hollow structure 42, or dexed adjusting ring 24 to the desired setting. that it closes outlet pipe 39 to provide circulation Although the illustration in Fig. 1 indicates a of the matter being milled through pipe 38 to device primarily intended for use in vertical posi the top of hopper 34 and back into the grinder. tion, and although the device is called a vertical Referring now to Figs. 2, 4 and 5, these detail mill, the grinding mechanism, as well as the mo ?gures clearly show the construction of the tive source, will operate in any other desired posi grinder or mill unit. Rotor shaft 26 is off-set and tion, provided the hopper issuitably located to threaded at 43 for the reception of rotor 28, which > function in conjunction with the grinder in such is shown in plan view in Fig. 5. This form of a rotor has a conical work surface 44, in which are 20 other position. While speci?c details are illustrated in the drawings, itis readily‘ evident that in the em minating with‘ their broadened ends at the nor ployment of the device for various matter to be mally horizontal top surface 46 of the rotor. milled, ,modi?cations and improvements may From this top surface extend vertical vanes or have to be incorporated, and we therefore reserve blades 41, which are positioned tangentially to a for ourselves the right to make changes and im theoretical inner circle. Recesses 45 and the provements in our invention, without departing peripheral faces of vanes 41 are provided with from the scope thereof, as expressed in the an sharp cutting edges. nexed claim. Stator 29, which forms an annular insert within provided wedge-shaped, inclined recesses 45, ter W e claim: the water jacketed portion 3| of the grinder hous ing, is provided with an internally conical work surface 48, corresponding to and adapted to co operate with conical work surface 44 of the rotor. In a colloidal mill, a hollow base haVing an upper ?ange arranged to provide a central open ing at the top of, the base, an open frame struc ture mounted upon the upper base ?ange and Within work surface 48 are provided recesses 49, and adjacent to these recesses are ?utes 50 eX comprising a dished frame-supporting element overhanging the base and an upwardly tapering open framework connected to the dished element, said dished element having a central opening, a indicated at 5| in Fig. 4, which cooperate with motor with an upwardly extending vertical shaft the working or peripheral edges of rotor vanes 41. These vanes are adapted to function. both as 40 suspended from the dished element and concen trically aligned in the hollow base with the cen turbine blades as Well as precutting instrumen tral opening, an upwardly dished centrally aper talities in conjunction with ?utes 58, which latter tured stationary drip guard concentrically aligned also serves as feeders for the material to be milled, with the shaft and spaced above and overhang in that they guide it towards the adjacent milling surfaces of the rotor and the stator. 45 ing the central opening, and attachment means between the drip guard and the frame support In the modi?ed form of the grinder or milling ing element for preventing liquid or moisture unit shown in Figs. 3 and 6, the rotor consists from entering the base and damaging the motor, of a lower, bodily immovable member 52, provided the shaft of the motor extending through and with a recess formation 53 and an adjustable top member 54 provided with a ?ange 55. Extend 50 above the drip guard, a, mill unit surmounted by a feed hopper supported upon the top of the frame ing vertically from the ?at upper surface of mem structure and. including a vertically adjustable ber 54 are tangential vanes 56. Between lower disk centrally coupled to a vertically downward members 52 and ?ange 55 of the upper member is ly extending shaft, the lower end of the mill shaft securely held an abrasive element 51, provided with an outer conical work surface, which forms 55 being shouldered to form a shaft portion of re duced diameter, a ball bearing unit mounted a continuation of the outer tapered face of ?ange about the reduced shaft portion with the inner 55 and the tapered peripheral surfaces of vanes race contacting the shaft shoulder, a bearing cup 56. vertically adjustably mounted within and to the The stator in this construction comprises an annulus 58, provided with a recess 59, and a head 60 top of the open frame structure and supporting the outer race of the ball bearing unit, a coupling 6!’! provided with an internally conical Work face, disposed directly above the drip guard and di which latter is provided with inclined ?utes 6|. rectly below the bearing cup, and opcratively Within recess 59 is lodged an exchangeable abra connecting the upwardly extending motor shaft sive element 62, preferably provided with recesses 63, which form continuations of ?utes iii. 65 and the downwardly extending mill shaft, the bearing cup and coupling being readily accessible In either of the constructions shown in Figs. 2, due to their location with respect to the open 4 and 5 and Figs. 3 and 6, the Work surfaces,’ frame work. whether conical or cylindrical or both, of the tending vertically through the upper portion of the stator. These ?utes have sharp cutting edges, grinder stator and rotor conform with one an other in their respective contours in such a man ‘ 70 EDWIN G. EPPENBACH. HENRY IMSHAUG. .