US1873839A - Beater engine - Google Patents

Description

Patented Aug. 23, 1932 ummsm ESL FATE NT OFFICE. j

FRANK J". GRATHWOL'AND JOHN E. GRA' IPHWO'L, OF SANDUSKY, OHIO 1.

BEATER seem Application filed November 29, 1929. Serial No. 410,357.

The present invention relates, as indicated, to a heater engine. the invention is to provide a device which shall operate upon straw or other similar material to create a long fibredpulp primarily for use in paper making. Further objects'of the invention willappear asthe description proceeds. To the accomplishment ofthe foregoing and related ends, said invent-ion, then, consists of the'means herein after fully described and particularly pointed out in the claims.

The annexed drawing and the following description set forth in detail certain mechanism'embodying the invention, such disclosed means constituting, however, but one of various mechanical" forms in which "the principle of the invention may be used.

In said annexed drawing:

2 Fig. 1 is a vertical "section through the device of our invention; and Fig. 2 is an elevation of an element comprising a part of the apparatus illustrated in Fig. 1..

' Referring more particularly to the'drawing, it will be seen that the device comprises a 'tank indicated generally at 10 and formed of a bottom wall 11, side walls, and "one'end' wall 12 rising substantially Vertically from said bottom wall, and a second end wall 13 joined to said bottom wall 11 by a smoothly curved portion 1 1. The tank or vat is divided 'into an upper and a lower portion by an intermediate horizontal partition 15 carried by the side walls and terminating short of the end 5 walls 12 and 13. j I

- Adjacent the upper portion of the tank 10 there is mounted a'shaft 16 journaled in the side walls of said tank and carrying a plurality of radially projecting arms 17 peripherally spaced about said, shaft. In the same vertical plane with said shaft 16 there is mounted a second shaft 18 carrying a similar number of radially projecting arms 19 similarly spacedperipherally about the shaft 18. 5 As is clearly to be seen from an inspection of Fig. 1, the arms 17 and 19 are of a length only slightly less than'the distance between the shafts 16 and 18. r j Below the partition 15 and in the same vertical plane with the-shafts 16 and 18 there The primary object of is mounted a third shaft 20 likewise journaled in the side walls of the tank, and pro: vided with radially extending arms 21. A fourth shaft 22 is mounted in the same plane,

being journaledin the side walls ofthetank and being provided with a plurality of radially extending arms 23. The shafts'20 only slightly greater th arms 21 and 23.

'Mounted'at'one side and 22 are likewise spaced apart a distance an the length of said of the vertical plane above'mentioned, and journaled in the side walls of the tank, is a shaft 24:, means (not shown) being provided for driving said shaft. The shaft 24 carries a'pinion 25 in mesh with a-gea'r 26 carried on the shaft 20. Said shaft 20 likewise carries a second gear'27 meshing with agear 28 of identical pitch diameter carried" upon the shaft gears 27'and 28- being such as to prevent-interference between the 22, the mesh of such arms 21 andl23'.

The shaft 20-carries a third gear 29 of much greater pitch" diameter, said gear 29 meshing with a gear 30 eter identical to that of the gear 29 and carhaving a pitch diamri ed by the shaft 16. 'Said shaft 16' carries a "gear-'31 having a pitch diameter equal to that of the gear 27; and saidgear 31 meshes with a gear 32 of equal pitch diameter carried upon the shaft 18.

As will be seen, the above described drive mechanism 'COIIIPIISGS shafts 16, 18, 20 and 22 means whereby the are'all'driven at the same speed, and whereby the arms on said shafts are prevented from interfering with each other; The shaft a' direction as to effect the shafts 16 and 22 a rotation of the shafts 18 Mounted upon the partition 15 are a pair 24 is rotated in such clockwise rotation of nd counter-lockwise and20.

of stops 33, one of said stops being positioned adjacent each of the side walls of the tank.

Each of said stops 33 is provided with one cam face 34 for cooperation with a wedge 35 having at its upper end a shank 36 threaded for cooperation with awing nut 37. Said wing nut 37 has bearin against a shield 38 which is supported upon the side" walls of the tank and upon the stops'33. I n Mounted in horizontal slideways in the side m said ribs. A similar block 42 provided with .a

radiused surface 43 having ridges 44 formed thereon is mounted to slide horizontally upon the partition 15. As will be clearly seen, eachof the blocks 39 and 42 is provided at its rear end with a vertical surface with which cooperate the vertical surfaces 46 of the cams 35, whereby said blocks 39 and 42 may be adjusted in a horizontal direction by reciprocation of the cams 35 through operation of the wing nuts.

Similarly, a stop 47 having a cammed surface 48 is mounted upon the bottom'wall 11 of a tank 10, and a wedge 49 is mounted for cooperation with said surface 48 and is provided with a shank 50 extending upwardly through the partition 15 andthrough an aperture in the shield 38, the upper end 51 of said shank 50 being threaded for cooperation with the wing nut 52 bearing upon said shield 38.

A block 53 is horizontally slidable in guideways in the side walls of the tank, and is provided with a radiused portion 54 formed with ribs 55 thereon for cooperation with the arms 21 on the shaft 20. A similar block 56 is horizontally slidable upon the bottom wall 11 of said tank and'is formed with a radiused surface 57 provided with ribs 58 thereon for cooperation with the arms 23 on the shaft 22. Each of the blocks 53 and 56 is provided with a vertical surface 59 for cooperation with the corresponding surface 60 on the wedge 49.-

In operation, the vat 10 is filled with liquid, as shown, and straw or other similar material is dropped into said tank through the opening 61. The shaft 24 is driven to rotate all of the shafts 16, 18, 20 and 22, so that the arms on said shafts set up a circulation of the liquid through the tank. The straw, carried in the liquid, is caused to move between the arms 17 and the ridges 41 and between the arms 19 and the ridges 44. The wedges 35 are so adjusted that the ends of the arms 17 and 19 barely clear the ridges 41 and 44, so that the straw is rubbed between the arms and the ridges. This operation has a tendency to break down the straw and to tear the fibres thereof apart without cutting the same, so that a long fibred pulp results.

After the straw has passed this stage, the circulation of the liquid in thetank' carries the straw around the end 62 of the partiour invention may be employed instead of the one explained, change being made as regards the mechanism herein disclosed, provided the means stated by any of the fol- V lowing claims or the equivalent of such stated means be employed.

We therefore particularly point out and distinctly claim as our invention:

1. lin a device of the class described, a vat, pair of parallel spaced shafts mounted in said vat in a common vertical plane, a plurality ofradially extending armsvmounted on each of said shafts, the arms on one shaft radially overlapping those on the other, the length of said arms being slightly less than the distance between said shafts, a block mounted adjacent each of said shafts and formed with a surface cooperable with, but not engageable by said arms, the forward edges of said block being spaced apart'a distance equal approximately to, the combined diameter of said interfitted rollers and the rear edges forming a reduced passage, said rollers being adapted to rotate in a direction to carry the blades from the wide distance to the narrow opening between the blocks, means forrotating said shafts, said shafts being rotatable to engage floating fiber at the diverging end of said blocks and to discharge it at their convergent ends;

2. In a device of the class described, a vat,

a pair of parallel spaced shafts mounted in said vat in a common vertical plane, a plurality of radially extending arms mounted on each of said shafts, a block mounted adj acent each of said shafts and formed with asurfa'ce cooperable with but not engageable by said arms, any plane including the axis of either of said shafts being intersected by an extension of said surface on the block adjacent said shaft, and means for r0- tating said shafts.

of the outer ends of said beater arms, said ridges being angularly'disposed with respect to said respective's'hafts.

4. In a device of the character described, a vat adapted to contain a liquid, a pair of parallel shafts mounted in said vat below the level of such liquid, beater arms on each of said shafts, the length of said arms being only slightly less than the distance between said shafts, means cooperable with said beater arms, upon rotation of said shafts, for exerting a mangling effect upon material carried between said arms and said means, and common means for rotating said shafts, said last-named means comprising a driven shaft, a pinion thereon, a gear on one of said pair of shafts meshing with said pin ion, a second gear on said one shaft, and a gear on the other of said pair of shafts and meshing with said last-mentioned gear.

5. In a device of the character described, a vat, two pairs of parallel shafts mounted in said vat in a common vertical plane, beater arms carried by each of said shafts, the length of such arms being only slightly less than the distance between the shafts of each of said pairs, means cooperable with said arms upon rotation of said shafts for exerting a mangling effect upon material carried between said arms and said means, and common means for driving all of said shafts and for preventing interference between the arms of said respective shafts, comprising a gear carried by each of said shafts, the gears of each of said pairs meshing with each other, a gear of different pitch diameter carried by one of each pair of shafts, said last-mentioned gears meshing with each other, a gear of a third pitch diameter carried by said one shaft of one of said pairs, a driven shaft, and a pinion carried by said driven shaft and meshing with said last-mentioned gear. 7

6. An apparatus of the class described comprising a tank adapted to contain liquidborne fibers, a pair of beater wheels in said tank, said wheels being adapted to move outwardly in the direction of travel of said fiber, a plurality of ribs arranged in two converging series adjacent the opposite rear quadrants of rotation of said wheels and a discharge channel between the adjacent rear edges of said two series of ribs.

7. In an apparatus adapted to comminute water-borne fibers, a tank, a pair of beater wheels completely submerged therein, arms on said wheels partly mutually overlapping, said wheels being adapted to turn outwardly in the direction of travel of said fiber, a plurality of ribs arranged in two converging series adjacent the opposite rear quadrants of rotation of said wheels, and a discharge channel between the adjacent rear edges of said series of ribs.

8-. An apparatus of the class described comprising a closed liquid circuit, a pair of beater wheels, said wheels carrying arms part ly mutually overlapping, said wheels being adapted to turn outwardly in the direction of travel of said fiber, a plurality of ribs arranged in two converging series adjacent the opposite rear quadrants of rotatlon of said wheels, and a discharge channel between FRANK J. (irRATI-IVVOL. JOHN E. GRATI-IWOL.

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