US1750645A - Cutting and mixing machine - Google Patents

Description

March 18, 1930.4` c. QFFENHAUSERl CUTTING AND MIXING MACHINE` March 18, 1930. ci oFFENHAusER CUTTING `AND MIXING MACHNE Filed my 5, 192s v sheets-sheet 2 INVENTOR K ff/IM ATTORNEY March 18, 1930. c. oFFl-:NHAUSER 1,750,645

CUTTING AND MIXING HCHlNE v19d July 5, 928 5 Sheets-Sheet '5 Patented Mar. 18, 1930 UNITED STATES PATENT OFFICE CUTTING AND MIXING MACHINE Application led July 5, 1928.

The object of this invention is to devise a novel cutting and mixing machine in which novel means are provided for effecting the circulation of the material or materials 'being treated, and novel means for discharging it under pressure from the machine.

With the above and other objects in view as will hereinafter more clearly appear, my invention comprehends a novel construction and arrangement of a cutting and mixing machine which can be used for either cutting 0r mixing or for both cutting and mixing.

It further comprehends a novel cutting and mixing machine wherein a pair of feed members are disposed side by side and driven in opposite directions and between these side members is disposed a third feed member which can be revolved in a forward or a reverse direction.

It further comprehends a novel machine of the character herein set forth where novel means are provided for discharging the material under pressure from the machine.

Other novel features of construction and advantage will hereinafter more clearly appear in the detailed description and the appended claims.

For the purpose of illustrating the invention, I have shown in the accompanying :o drawings a typical embodiment of it, which, in practice, will give reliable and satisfactory results. It is, however, to be understood that this embodiment is typical only and that the various instrumentalities of which my invention consists can be variously arranged and organized, and that the invention is not limited to the precise arrangement and organization of these instrumentalitiesas herein set forth.

Figure 1 is a top plan view with the cover removed of a cutting and mixing machine embodying my invention.

Figure 2 is a section on line 2-2 of Fig- 5 ure 1.

Figure 3 is a section on line 3-3 of Figure 1.

Figure 4 is a section on line 4 4 of Figure 2 with the feed screws removed.

5o Figure 5 is a partial Section of the Casing Serial No. 290,447.

showing in elevation, a bearing member employed.

Figure 6 is a plan view of a gate.

Figure' is a section on line 7-7 of Figure 5 of the bearing seen in Figure 5. 55

Figure 8 is a section on an enlarged scale on line 2--2 of Figure 1, showing more particularly the compression feed screw and the manner in which it interlocks with the central feed screw to be driven thereby.

Figure 9 is an elevation of an apertured disc and its retaining cap.

Figure 10 is an elevation of the apertured disc seen in Figure 9 in detached position.

Figure 11 is an elevation of the knife.

Similar numerals of reference indicate corresponding parts.

Referring to the drawings 1 designates the casing of a cutting and mixing machine embodying my invention. 7G The casing is preferably formed' from an integral casting and is provided with a removable cover 2 of any desired construction. As illustrated, the casing is substantially U shaped in cross section, the opposite side 75 walls being substantially straight and it is preferably of much greater length than width in order that the proper mixing of the material or materials being treated can be effected. S0

The opposite side walls are preferably substantially parallel and at the central portion at the bottom, the casing is preferably rounded as indicated at 3, see Figure 4, and such rounded portion merges into the rounded portions 4 and 5 at the bottom of the casing. The casing is provided at one end with a partition 6 which contributes with the walls of the casing to form a mixing chamber 7 for the material to be treated. This par'- tition also contributes with the walls of the casing to form a gear chamber 8 within which is contained the driving mechanism.

9 designates the main driving shaft which 95 is suitably journalled, and on this driving shaft is fixed a gear 10 which meshes with the gear 11 fixed to the shaft 12 which is journalled in an end wall of the casing and the partition 6, and its forward end extends 100 through the artition 6 and is provided with the opposite y directed hooks 13.

The shaft 12 has also fixed to it a gear 15 which meshes with a gear 16 fixed to a. shaft 17 suitably journalled.

The forward end ofthe shaft 17 is constructed in a similar manner to that of the shaft 12 having a head provided with hooks 14 as will be understood from the description already given. y

19 designates a shaft suitably journalled, and on this shaft is mounted a clutch collar 20 with which cooperates a clutch lever 21 which extends into a position accessible to the operator of the machine.

The clutch collar 20 is keyed or splined to the shaft 19 and carries the gears 22 and 23, the gear 22 being adapted to be brought into mesh with the gear 11 on the shaft 12 and the gear 23 being adapted to be moved into mesh with a gear 24 fixed to the shaft 17, see Figure l.

The shaft 19 has fixed to it a gear 25 which meshes with a gear 26 having an extended hub 27 and loosely mounted on a sectional shaft 28, one section of which is journalled in the partition 6.

The drive shaft 9 has fixed to it a sprocket wheel 29 around which passes a sprocket chain 30 which also passes around a sprocket wheel 31 fixed to the inner section of the shaft 28.

The hub 27 loosely mounted on the shaft 28 is provided with the oppositely directed hooks 32 to receive one end of a central feed screw 33. This central feed screw 33 at its forward end is detachably connected with the hooks 34 which are secured to the flanged end of a hollow shaft 35. This hollow shaft 35 has a bearing in a bearing post 36, see more particularly Figures 5 and 7, from which it will be seen that this bearing at its rear end has its side walls converging rearwardly as at 38 and is provided with the slots 39. The

. slots 39 are vertically disposed and adapted to receive a. gate 40 which is provided with the grasping handle 41 and which is recessed at its lower end as at 42. This gate substantially closes the opening 43 leading to the chamber 44 within the casing 45 of the cutting mechanism. The shaft 28 extends through this casing and has connected with it a compressor feed screw 46 the shaft of which is interlocked as at 47 with the shaft The inner wall of the chamber 44 converges towards its outer end. The shaft 28 'has keyed to it a cutter 48 of any desired or conventional type which revolves in proximity to a stationary apertured disc 49 which is secured in place by means of a cap 50 screwed to the,casing 45. This cap 50 is provided on its outer face with the guides 51 and a stop lug 52 in order to adapt it to receive a forming spout 53 having the discharge opening 54 of a desired contour so that the out material discharged will be of a desired form.

The forward end of the side feed screws 55 and 56 are guided by means of the bolts 57 carried by the end wall of the casing and entering an aperture in the end portion of a feed screw. rl`he rear ends of the feed screws are adapted to pass between and be engaged by their respective hooks such as 13 and 14.

The gate 40, if desired, may be provided with the guides 58. i

In order that the material within the mixing chamber can be maintained at a desired temperature, I provide the bottom wall of such chamber with a chamber 59 having communicating with it a pipe 60 and with the chamber 61 having communicating with it a pipe 62 so that a temperature changing medium may be introduced into the chambers 59 and 61. These chambers 59 and 61 may be separate chambers but they preferably communicate with each other at each end and the pipes 60 and 62 serve as a filling and discharge means so that either a heating or cooling medium can be circulated through the chambers 59 and 61.

In the operation, the material to be treated is placed in the chamber 7 at any desired point and if the material is only to be mixed the gate 40 is closed.

The two side feed members 55 and 56 revolve in opposite directions and the central feed screw can be revolved in either a clockwise or a counter-clockwise direction as may be desired. It will thus be seen that the material will be fed forwardly through the right hand feed channel and at the outer end of such feed channel will be discharged into the opposite side channel and be fed rearwardly and then again be discharged at the rear end of the left hand feed channel to the right hand feed channel. The material will also be circulated at the central portion of the feed channel so that there will not be any 'dead spots in the mixing chamber, or in other words the entire mass of material will be continuously moved.

As soon as the desired mixing action has taken place, the gate 40 is raised and the clutch sleeve 2O is shifted if necessary to cause the shaft 28 to revolve in a right hand direction and the material will be fed from the mixing chamber 7 and will pass into the compressor chamber 45 to the cutter 48 and the material will be cut and be discharged through the forming spout 53. The discharge end of this spout 53 may have any desired conformation so that the material can be discharged as a continuous band having any desired contour in cross section.

It will be apparent that the side feed screws can be readily removed when it is desired to clean the machine. The central feed screw 33 can be disconnected and the shaft 28 removed when the cap 50 and the feed screw 46 are removed.

The knife is readily replaceable upon removal of the cap 50, and interchangeable spouts 53 can be employed in accordance with the shape of the material which is to be discharged from the machine.

It will now be apparent that I have devised a new and useful cutting and mixing machine which embodies the features of advantage enumerated as desirable in the statement of the invention and the above description, and while I have, in the present instance, shown and described a preferred embodiment thereof which will give in practice satisfactory and reliable results, it is to be understood that this embodiment is susceptible of modification in various particulars without departing from the spirit or scope of the invention or sacrificing any of its advantages.

Having thus described my invention what I claim as new and desire to secure by Letters Patent, is

1. In a cutting and mixing machine, a chambered casing, a pair of feed members disposed side by side in said casing and adapted to feed in opposite directions, an intermediate feed member contributing with the casing to form when in operation two feed channels, and actuating means for said feed members.

2. In a cutting and mixing machine, a chambered casing, a pair of feed members disposed side by side therein and adapted to revolve in opposite directions, an intermediate feed member disposed between and below said pair of feed members, and driving mechanism to effect the feed of said pair of feed members and to cause said intermediate feed member to revolve in a forward or a reverse direction.

3. In a cutting and mixing machine, a chambered casing, a pair of feed members disposed side by side therein and adapted to revolve in opposite directions, an intermediate feed member contributing to form two feed channels, cutting mechanism, and driving mechanism for said feed members and cutting mechanism.

4. In a. cutting and mixing machine, a chambered casing, a pair of feed members disposed side by side therein and adapted to revolve in opposite directions, an intermediate feed member contributing to form two feed channels, cutting mechanism, driving mechanism for said feed members and cutting mechanism, and means to prevent the material, being treated, from passing to said cutting mechanism.

5. In a cutting and mixing machine, a casing having a longitudinally extending substantially U shaped chamber therein, a pair of longitudinally extending feed screws disposed side by side in said chamber, an intermediate feed member in said chamber and contributing when in operationto form two feed channels, said casing having a. discharge spout, cutting mechanism in said spout, means to feed the material in said casing under pressure to said cutting mechanism and driving means for said feed members, cutting mechanism and pressure feeding means..

6. In a cutting and mixing machine, a casing having a mixing chamber and a delivery spout forming a cutting chamber, two helical feeding members disposed side by side in said mixing chamber, an intermediate feed member in said mixing chamber in alignment with said delivery spout, cutting mechanism at the discharge end of said spout, means to feed material under pressure to said cutting mechanism, and actuating means for said feed members. l

7. In a cutting and mixing machine, a casing having a mixing chamber, material circulating means in said chamber comprising three spaced feed members arranged in parallelism, a delivery spout at one end of said casing, cutting mechanism at one end of said spout, driving means for said feed members and cutting mechanism, and reversing mechanism for one of said feed members.

8. In a cutting and mixing machine, a casing having a mixing chamber, material circulating means in said chamber comprising three spaced feed members arranged in parallelism, a delivery spout at one end of said casing, cutting mechanism at one end of said spout, driving means for said feed members and cutting mechanism, reversing mechanism for one of said feed members. and a former through which the cut material is discharged.

9. In a cutting and mixing machine, a casing having a mixing chamber, a pair of helical feed screws disposed side by side in said chamber and connected to revolve in opposite directions, a central feed screw, said casing having a discharge opening, cutting mechanism to which materia-l is fed from said discharge opening, a shaft to actuate said cutting mechanism, and means to atuate said feed screws and said shaft.

10. In a cutting and mixing machine, a casing having a mixing chamber provided with a discharge opening, a. gate for said opening, cutting mechanism to which the material is discharged from said opening, side feed screws in said chamber connected to revolve in opposite directions, a central feed screw.,means to drive said central feed screw in a forward or a reverse "direction, driving means for said side feed screws, said feed screws being detachably connected with their driving means, and means to actuate said cutting mechanism.

11. In a cutting and mixing machine,va casing having a mixing chamber provided with a discharge opening, a gate for said opening, cutting mechanism to which the material is discharged from said opening,

side feed screws in said chamber connected to revolve in opposite directions, a central feed screw, means to drive said central feed screw in a forward or a reverse direction, driving means for said side feed screws, said feed screws being detachably connected with their driving means, means to actuate said cutting mechanism, and a discharge spout to receive the material from said cutting mechanism and detachably connected therewith and the discharge end of said spout being adapted to give a predetermined contour in cross section to the material being discharged.

CHRISTOPHER OFFENHAUSER.

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