US2781908A - Scalper - Google Patents

Description

Feb. 19, 1957 .1. GoLLBAcH 2,181,908

scALPER 2 sheds-sheet 1 Filed Julie 8, 1953 DDEICIEIEEIEIEI EIEDEIDDEIE INVENTOR.

/0550/7/ GOLLAc/f Feb. l19, 1957 J. GoLLBAcH SCALPER v 2 sheets-sheet a Filed June 8', 1953 INVENTOR. ./osfm aaAf/f BY www SCALPER Joseph Gollbach, Sacramento, Calif.

Application June 8, 1953, Serial No. 360,229

Claims. (Cl. 209-461) thathas worked to the bottom wall falls laterally through the perforations in the discs while the long pieces of foreign material, straw etc. is intended to be moved over said bottom wall and to be discharged therefrom. Generally, the above elements are employed in the invention herein described.

Attempts Vto usel conventional scalpers to separate rice from the green heavy rice straw have not been successful for a number of reasons, and shaker screens have been used. However, the vibration resulting from theu's'e of shaker type separators is so extreme as to bev detriment-al to the buildings in which they are used, and in addition, the desired separation has not been possible.

VIn theatternpts to use conventional scalpers for rice, Ithe green heavy rice straw and rice are fed from an elevator to the soalpers. A feed belt in the elevator runs continuously and the material is fedV from the elevator to the scalpers.v VThe discs in the, sc alpers become clogged up by lthe rice straw andrwhen this occurs the elevator is choked andl unless the system is quickly cleaned to permit the steady .movement of the straw and rice the' running of the beltwin the choked elevator causes heating that would likely result in causing a're, an' 'occurrence that would be disastrous.

With the present invention, the scalping is continuous and efficient and, provision Vis made to keep the screens or discs clean and to prevent the material from choking the elevator and the scalper itself.

One of the main objects of the invention is the pro vision of a scalper having improved means and structure for keeping the strawfrom choking the scalper and the elevator that feeds the same.

Another object of the invention is the provision of elfectivemeans in av scalper for relieving the feed means from surplus material'fed thereto so that the material will not pack in the Velevator orfeed device and thus create aliaizardous condition.

Other objects and advantages will appear inthe description and in they drawings.,

In the drawings,

Fig, 1 is av part-elevationalv and par-t sectional View of a scalperfshowing the present invention, the View being taken .from a side Yof the machine with the near side ofthe scalper housing removed.

Fig. 2 is a sectional view taken 4substantially alongline 2-2of"Fig'.1,.

Fig.' 3 isa fragmentarytop plan view of the feed vmeans of Fig.' l Withcertain parts broken away to show Structure.

nited rates Patent O y2,781,908 Patented Feb. 19, 1957 Fig. 4 is an enlarged fragmentary sectional view of the upperend of the rake in Fig. l.

Fig'. 5 isa sectional View -t-aken along line 5 5 of Fig. 4.

In detail, the scalper show-n in the drawings comprises a housingv having a top wall 1 (Fig. 1), front and rear side Walls 2, 3, and opposed end walls 4, 5, which walls together may form the frame members for supporting the working par-ts of the scalper.

Extending between end walls 4, 5, is a main horizontal shaft 6 that'extendsat it-s'ends through bearings? that are carried byv said end Walls. This shaft has a plurality of pairs of spaced, perforated, circular, vertically disposedv discs 8 secured thereon.

Also secured on shaft 6 and slightly spaced from the opposite outer sides of each pair of dises 8- areimperfora'te circular` discs 9. One of the discs 9 is common to the adjacent discs of adjacent pairs as seenA in Fig. 2.

An arcuately curved, elongated bottom wall-10 having a transversely inverted U or V shaped strip 11. extending longitudinally thereof, extends across the space between the lower peripheral edges of each pair of discs 8, and-to points 12, 13a-bout atl opposite sides of the axis of rotation o'fdiscs 8- or' of shaft 6. The bottom wall 1l)V is stationary and is secured at its ends to the main housing, and a slight space is left between the peripheral edges of the discs 8 and the marginal portionsof said bottom wall to' per-mit riceY to pass. The strip 11 merely preventsy the lodgment of rice on' the bottom wall by divertingit to the spacesbetween the edges of the discs and the marginal portionsof the bottom wall. i

Up to this point the structure described, is. virtually standard, except in the usual structure the point 1'3 where the bdttornwall ends issubstantially lower,

Extending upwardly from the bottom walls 10. at the level of point 12 is an outwardly inclined bottomwall 15 of a feed chute and a vertical wall 16 is in upward con tinuation of the kupper end of said Wall 15 (Fig. l).

In spaced opposedrelation to wall 16 isa fron-t wall 17 and disposed between'l these walls 156, 17 is a shaft 2i? of a feed screw, which shaft is journall'ed for rotation at its ends in. bearingsv supported by wall-s 4, 5. Shaft Ztl. is parallel with niain shaft 6; the opposite ends; of lth'eblad'es 2l, Z2 on said shaft 20 (Fig. 3): terminate at their outer ends adjacent to end wall-S23, 24. These walls 23,; 2d extend to the discs 8 near the ends of lthe row of discs on shaft, and terminate at their upper ends in free edges 25 that are eveniwith` thelevel of the axis of shaft 20.

Blades Zi, 22 meet at the center of shaft- 26. andI are arranged to move material fed thereto from above in opposite outer directions toward walls 23, 2e.

Box like partitions 26 ('Fig. l3) block'off thel spaces between the adjacent pairs of discs S, so that'mat'erial sliding down chute 15 will be directed to the spaces be# tween the disc-s of each pair and will not enter the spaces between the adjacent discsof adjacent pairs.

A gate Sli-(Fig. l) is supported on the downwardlyL iiiclined upper sides of the partitions. 26 so as to regulate the amount-of material fed to the spaces betweenl the discs 8 of each pair. This gate is connected by one or more armsv 31 with a shaft 32that, in turn, extends' through the wall 4 and the end of theshaft that projects from said wallA iy is provided with a handle 33 (Fig, 3)',for actuation of the gate as desired. T he lower the gateis moved on the partitions 26 the less material caribe fed to the spaces between the discsn of each pair thereof.

A constant relatively slow. speed movtorni is mounted onrthevhousingl (Fig. l) andthe drive shaft 35 of said motor carries-sprocket Wheelsy 37, 38 thereon.,

A chain 39 connects thensprocket wheel 37 withy a sprocket wheely 40 on shaftZlf ofy thefeed screw anda v chain 4l4 connects threlsprocket 38. with a sproeketwheel 3 42 on shaft 6. Thus shafts 6, 20 are connected with the motor for actuation by the latter.

The opposite end of shaft 6 carries a sprocket wheel 60 (.Fig. 2) and an endless chain 61 extends thereover and 1n an upwardly inclined direction to a point spaced above and outwardly of the end 13 of bottom wall 10 where said chain extends over sprocket wheel 62 on shaft 45. Shaft 45 also carries sprocket wheels 44 which drive chains 43. Chains 43 extend between each pair of discs 8 and idle around spacers 34 which separate said discs at shaft 6. Shaft 45 is journaled in bearings carried by walls 4, 5. A guard plate 47 extends between the upper run 48 and lower run 49 of chain 43 and around shaft 45 where said chain extends around each of the sprocket wheels 44 (Fig. 4) to prevent straw, etc. from winding around the shaft 45. A cross frame member 53 supports said guard plates, which frame member may extend between the walls 4, 5.

i Equally spaced along the chain 43 are outwardly pro- Jecting fingers or forks 50 (Figs. 4, 5) which forks are secured to links of said chain.

Hingedly secured to bottom walls at points 13 where said walls terminate at the side of the shaft 6 opposite the feed screw, is an upwardly extending apron 51. This apron is spaced at its uppermost portion below the lower run 49 of chain 43 and may be considered an upward extension of said bottom walls 10. The apron curves outwardly and downwardly to facilitate the movement of straw and the like thereover, and a removable pin 52 held in each of the end walls 4, 5 supports the apron in its upwardly extending position, and upon removal of said pins the apron can be dropped to facilitate access to the discs 8 when desired.

Secured to the top wall 1 and depending therefrom are baille or guard strips 55 (Fig. l) that extend past the shaft 6 at the side of the latter nearest the feed screw, and which strips then extend below said shaft. These Strips prevent straw from wrapping around the shaft 6 and clogging the discs 8.

In operation the rice and rice straw is fed to the center of the feed screw from an elevator 56 and it is then distributed across the bottom of the feed chute by the screw for passage to between the pairs of discs 8. These discs are rotated to move the straw over the bottom 10 and their inverted U or V shaped upper sides from points 12 to points 13 and then over the apron 51. The rice drops through the perforations in discs 8. The imperforate discs 9 prevent the straw from passing through, and as the straw moves to the chains 43, the fingers or forks 50 on the latter' drag the straw over the apron and it is discharged from the scalper.

In the event an excess of material is fed to the feed screw so that it cannot be carried over bottoms 10 with sufficient speed to keep the scalper free, the excess or surplusage will automatically overow the end plates or walls 23, 24 and neither the elevator nor the scalper will be clogged. This overow will pass downwardly over the outer sides of the said plates to mingle with the rice that is discharged through the openings in discs S or, if desired, it can be kept separate. In any event, the safety feature of having this structure which enables the scalper to be relieved of the surplusage is very valuable since it insures against the clogging of the elevator, and the likelihood of a re being created due to such clogging.

The provision of the rakcs for keeping the perforated discs free from clogging insures eicient clearing of the screens or perforated plates 8.

I claim:

l. A scalper comprising a pair of vertically disposed, horizontally spaced, coaxial, circular, perforated discs supported for rotation about their common axis, an arcuately extending stationary bottom wall extending across the space between said discs along their lower peripheral edges and extending along the peripheries of said discs to points respectively at opposite sides of said axis, feed means for feeding grain and the like outo said bottom wall at one of said points, means for rotating said discs for movement of ltheir said peripheral edges along said bottom wall to the other of said points, a rake extending between said discs and over the end of said bottom wall at said other of said points, means for moving said rake outwardly from between said discs for drawing straw and other material'that was mixed with said grain from the space between said discs and for discharging it outwardly of said space, said rake being an elongated generally horizontally extending endless member providing an upper and a lower flight and outwardly projecting tines on said flights spaced along the lengths of the latter, a shaft supporting said discs for rotation and to which they are secured, said endless member being a chain, a tubular spacer on said shaft between said discs and a second shaft outwardly of said discs supported for rotation, a sprocket wheel secured on said last mentioned shaft and said chain extending over said spacer and said sprocket wheel, the means for actuating said rake being a motor connected with the shaft supporting said discs and with said second shaft.

2. A scalper comprising a pair of vertically disposed, horizontally spaced, coaxial, circular, perforated discs supported for rotation about their common axis, an arcuately extending stationary bottom wall extending across the space between said discs along their lower peripheral edges and extending along the peripheries of said discs to points respectively at opposite sides of said axis, feed means for feeding grain and the like onto said bottom wall at one of said points, means for rotating said discs for movement of their said peripheral edges along said bottom wall to the other of said points, a rake extending between said discs and over the end of said bottom wall at said other of said points, means for moving said rake outwardly from between said discs for drawing straw and other material that was mixed with said grain from the space between said discs and for discharging it outwardly of said space, the end of said bottom wall at said other of said points being positioned at substantially the same level as that of said axis and said feed means including a rotary feed screw extending transversely across lthe edges of said disc, a feed chute in which said screw is positioned and end walls at the ends of said screw terminating at their upper ends in free edges about even with the axis of rotation of said screw to pass surplus material thereover in the event of an over supply of such material to said screw.

3. A scalper comprising a row of pairs of vertically disposed, horizontally spaced, coaxial, circular, perforated discs, a rotatable shaft supporting said discs for rotation and to which they are secured, an arcuately extending stationary bottom wall for each pair of discs extending across the space between each pair along their lower peripheral edges and extending along the pcripheries of the discs of each pair from a point at one side of said shaft to a point at the other side thereof, an inclined feed chute extending upwardly and outwardly from each bottom wall from said one point of each and extending along said row of discs from end to end thereof, a rotary feed screw also extending along said row and from end to end thereof and disposed outwardly of said disc above and adjacent to the upper side of said feed chute, a vertical wall at each end of said chute extending upwardly from the latter and terminating in free upper edges at the ends of said feed screw over which surplus material is adapted to pass in the event of an overfeed of material to said screw and a passageway alongside said vertical wall at each end of said chute for conducting said surplus material to said bottom wall at the end discs of said row of pairs thereof.

4. A scalper comprising a row of pairs of vertically disposed, horizontally spaced, coaxial, circular, `perforated discs, a rotatable shaft supporting said discs` for rotation and to which they are secured, an arcuately extending stationary bottom wall `for each pair of discs extending across the space between each pair along their lower peripheral edges and'extending along the peripheries of the discs of each pair from a point at one side of said shaft to a point at the other side thereof, an inclined feed chute extending upwardly and outwardly from each bottom wall from said one point of each and extending along said row of discs from end to end thereof, a rotary feed screw also extending along said row and from end to end thereof and disposed outwardly of said discs above and adjacent to the upper side of said feed chute, a vertical wall at each end of said chute extending upwardly from the latter and terminating in free upper edges at the ends of said feed screw over which surplus material is adapted' to pass in the event of an over feed of material to said screw, a stationary guard plate extending vertically between the discs of each pair to a point below said shaft and said screw.

5. A scalper comprising a row of pairs of vertically disposed, horizontally spaced, coaxial, circular, perforated discs, a rotatable shaft supporting said discs for rotation and to which they are secured, an arcuately extending stationary bottom wall for each pair of discs extending across the space between each pair along their lower peripheral edges and extending along the peripheries of 25 the discs of each pair from a point at one side of said shaft to a point at the other side thereof, an inclined feed chute extending upwardly and outwardly from each and adjacent to the upper side of said `feed'chute, a

vertical wall at each end of said chute extending upwardly from the latter and terminating in free upper edges at the ends of said feed screw over which surplus materialis adapted to pass in the event of an over feed of material to said screw, the level of the bottom walls at the ends thereof that are at said other side of said shaft being at approximately the level of said shaft and a rake between each pair of discs extending from said shaft and over the end of each first mentioned point, said rake being movable in direction away from said shaft for discharging straw and the like from between said discs, means mounting said rake for such movement thereof, means for so moving said rake, and means for rotating the shaft carrying said discs for moving such straw over such bottom wall to said rake.

References Cited in the file of this patent UNITED STATES PATENTS 1,447,912 Travis Mar. 6, 1923 1,813,519 Varusky July 7, 1931 1,989,687 Gray Feb. 5, 1935

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