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(11) Patent Number: KE 00183
(45) Date of Grant: 13/10/2004
(21) Application number: 2003/00392
(22) Filing date: 02/14/2013
(73) Applicant: Jaswinder Singh Sehmi, P.O. Box 208 Kericho
(72) Inventor(s): Jaswinder Singh Sehmi
(54) Title: Inlineprocess of sorting tea
(56) Abstract: A simple method and a unique line for a means of combining a pre-sorter with a final grading sorter resulting in a complete sorter. A complete machine which gives effective fibre removal, from ex-drier teas and grading of teas in one machine without any intermediate conveyor a). Electra statically charge rollers are placed Udine with the flow of tea. The various sieves or meshes for grading the tea are staggered in a stepped orientation. The feed hopper to the machine has a tapered design to facilitate even distribution of tea on the bed plate of the pre-sorter. The taper feed hopper which has centrally placed dividers which facilitate the flow f lea to give an even distribution on the bed for effective and maximum fibre removal. An improved pre-sorting machine wherein is provided a dimpled stainless steel surface positioned adjacent to and below a set of PVC rollers moving at slow speeds, to facilitate maximum pick up of fibre, which are repositioned using a Single point adjustment arm making it easier to adjust the UP and down movement at a single point. The adjustment arm bracket complete with frame that can be adjusted from one side. The bracket not only assists in cross parallel alignment, but also helps in securing the stainless steel plate which holds the spring hinged plate which has the felt pad fixed onto it, simplifying the concept of fibre removal from the roller. The spring loaded plate attached to the fibre extractor rollers forms an even pressure on the roller ensuring maximum pick-up of fibre. The mechanical drive is a reciprocating double action crank system with the cranks at 180deg to each other facilitating the balancing of the two frames and creating its own inertia or centrifugal forces for power generation. The cushioned undercarriage which is rubber mounted, providing a rigid yet fully cushioned or shock absorbing flexible unit. The undercarriage also houses the drive mechanism. The roller rotate counter clockwise to each other and the fibre is collected in chutes situated in the middle of the bed. The roller drive is driven by universal shafts sprocket driven, rotating the rollers into each other.
 
COMBINED INLINE FIBRE EXTRACTING AND GRADING MACHINE (TWIGA SORTER)-COMPLETE SORTER.
PATENT SPECIFICATION
Priority Date: 2nd April 2003
Priority Data: KE/P/03/00382
Int. Filing Date:27th November 2003
PCT Appl. No.PCT/KE03/00007
DESCRIPTION
A simple method and a unique line for a means of combining a presorted with a final grading sorter resulting in a complete sorter.A complete machine which gives effective fibre removal, from ex-drier teas and grading of teas in one machine without any intermediate conveyor (s).
Electrostatically charge rollers are placed in line with the flow of tea. The various sieves or meshes for grading the tea are staggered in a stepped orientation. The feed hopper to the machine has a tapered design to facilitate even distribution of tea on the bed plate of the presorted. The taper feed hopper which has centrally placed dividers which facilitate the flow of tea to give an even distribution on the bed for effective and maximum fibre removal. An improved presorting machine wherein is provided a dimpled stainless steel surface positioned adjacent to and below a set of PVC rollers moving at slow speeds, to facilitate maximum pick up of fibre, which are repositioned using a Single point adjustment arm making it easier to adjust the up and down movement at a single point. The adjustment arm bracket complete with frame that can be adjusted from one side. The bracket not only assists in cross parallel alignment, but also helps in securing the stainless steel plate which holds the spring hinged plate which has the felt pad fixed onto it, simplifying the concept of fibre removal from the roller. The spring loaded plate attached to the fibre extractor rollers forms an even pressure on the roller ensuring maximum pick-up of fibre. The mechanical drive is a reciprocating double action crank system with the cranks at 180deg to each other facilitating the balancing of the two frames and creating its own inertia or centrifugal forces for power generation. The cushioned undercarriage which is rubber mounted, providing a rigid yet fully cushioned or shock absorbing flexible unit. The undercarriage also houses the drive mechanism. The roller rotate counter clockwise to each other and the fibre is collected in chutes situated in the middle of the bed. The roller drive is driven by universal shafts sprocket driven, rotating the rollers into each other.
Referring to Fig. BM/TWIGA/003 and Fig. BM/TWIGA/ADJ007:-

1 is the feed hopper in which the ex-drier black tea is discharged, the feed hopper 1 has a mesh 2 to remove balls from the tea. The tea then pours onto the stainless steel bed of the machine 3 through divider plates situated at 4 to facilitate even spread of tea on the bed plate. The PVC roller 5 is in line to the machine and the flow of tea. The oscillating arms 6 are attached to the undercarriage 7 and further to the crank mechanism 8 mounted onto the ribbed chassis 10. The tea pours though another mesh 11 onto the final sorter section 12 which can contain any number of meshes as required. 13 is the attachment for the roller drive through the universal shaft. 14 is the single point adjustment arm which controls the up and down movement of the rollers.
Referring to Fig. BM/TWIGA/ADJ005 and Fig. BM/TWIGA/ADJ006
The inane sorter roller 5 follows the line of the flow of the direction of the tea on the bed
plate 3. It can have variances from -45deg (b) to 0 (a) to +45deg (c) with the flow of tea.
The side view shows the variances of the degrees in relation to the bed plate 3. The roller 5 can vary in a horizontal movement from -45deg (t) to 0 (e) to +45deg (g). The conventional sorter has rollers placed at a 90deg angle to the bed plate (Fig. BM/TWIGA/ADJ006).
Referring to Fig. BM/TWIGA/ADJ008:-
This is a cross section of the machine with the stainless steel side covers 14 covering the
roller and preventing spillages. The roller direction 18 is into each other with the felt plate 16 attached onto the single point adjustment arm 19, pour the collected fibre into 17 discharging into chute 15.The bed plate 3 of the machine is cross hatched dimpled stainless steel to ensure even spread of tea on the bed. The oscillating arms 6 and the undercarriage 7 are connected to the ribbed chassis 10 via bolted rubber bushing 20 funning a cushioned drive.
Referring to Fig. BM/TWIGA/ADJ010 and Fig. BM/TWIGAJADJ001
19 is the up and down movement of the rollers which are adjusted by the single point adjustment arm 21 complete with the frame, the attachment for the rollers 23 and the spring loaded felt plate 16. The fulcrum point 22 attaches both rollers to one single point regardless of the adjusting mechanism.
Referring to Fig. BM/TWIGA/UND002
Shows the undercarriage 7 of the machine in detail. The cushioned pipe work 24 is attached to the crank mechanism 8 by a conrod arm 25 to facilitate the oscillating movement of the machine. The rubber bushing 20 is bolted 26 to the frame of the machine connecting through the oscillating arm 6. 26 shows the side view of the cushioned undercarriage fitting into the frame of the machine.
Referring to Fig. BM/TWIGA/ADJ009

The double crank mechanism is shown in detail where the oscillation movement through a single drive with a double crankshaft forms a reciprocating motion to work both ends of the machine.
Referring to Fig. BM/TVVIGA/ADJ011
13 is the side view of the drive for the rollers. The drive sprockets 27 for the universal shaft connecting the rollers to the drive mechanism are connected via a chain 28 and passed through an idler tensioner 29.
Referring to Fig. BM/TWIGA/FEED HOPPER/004:-
The top view of the tapered feed hopper 1 is shown in greater detail to emphasize the divider 30 which allows for even distribution of the tea to the bed of the machine. The side view shows the balls discharge chute 31 and the side view of the feed hopper pouring onto the bed 3. 32 is a cross section of the dimpled stainless steel bed tray to facilitate even spread of the tea for effective fibre removal. The front view shows a cross section of the feed hopper giving the points of the mesh 2, the chute 31, the divider 30 and the discharge of the tea onto the bed 3.
The mechanism is designed for effective removal of fibre in CTC and orthodox teas after the dryers. Fitted with food grade PVC rollers moving at very slow speeds for effective picking of fibre.
Uniquely designed, slow speed sorter which saves teas while traveling on the screen from
shuffling and loosing bloom. The mechanism contains a slow speed sorter, which saves teas while traveling on the screen from shuffling and loosing bloom. The trays, chutes and hoppers are all made of food grade S/Steel AISI 304. Bubble tray with cross hatch for easier flow of tea.
The TWIGA PRESORTER is designed for effective removal of fibre in CTC and orthodox teas after the dryers.
Each roller can be adjusted parallel to the bed by the turn of the adjustable screw located at the side on each roller assembly. An added feature in the machine is also that the rollers can be adjusted from both sides as per the settings required.
Fig. BM/TWIGAJ003 is a side view of the TWIGA sorter showing the inline roller arrangement, the undercarriage, the crankshaft mechanism and the final sorting meshes mounted on rubber bushed oscillating aims.
Fig. BM/TWIGA/ADJ007 is a detailed side view section of the complete sorter showing 35 the area of the fibre extraction and the final sorter with all the meshes mounted on a ribbed chassis frame.
Fig. BM/TWIGA/ADJ005 and BM/TWIGA/ADJ006 show the variations in the inline sortation. It also shows the relationship of the inline sorter to the conventional sorters.

Fig. BM/TWIGAJAH1008 shows a front and back view of the sorter with a cross section of the rollers, fibre collection chutes, undercarriage and the ribbed chassis.
Fig. BM/TWIGA/ADJ010 shows how the single point adjustment arm is fitted onto the 45 rollers for an up and down movement.
 
Fig. BM/TWIGA/ADJ001 shows a side view of the single point adjusting arm with the frame and the spring loaded back plate for fibre collection.
Fig. BM/TWIGA/UND002 shows a detailed view of the cushioned undercarriage and the rubber mounted oscillating arms.
Fig. BM/TWIGA/ADJ009 shows the double crankshaft mechanism with reciprocating motion for the oscillating movement of the machine.
Fig.BM/TWIGA/ADJ011 shows the front and side view of the drive mechanism for the universal shaft driving the rollers.
Fig. BM/TWIGA/FEED HOPPER/004 shows the top, side and front view of the feed hopper showing the taper design.

Physical Features: -
• Low center gravity height Machine.
• Frame fullyjigged and Mig welded.
• Aesthetically Pleasant with complete food grade (AISI 304 S/STEEL)  specification fixtures.
• Hygienic and safety standards are priority to the design.
• Safety features include; -
o Fully Guarded from all fingers running nips
o Silent working machine. 25    • It is a User-friendly simple machine.
Mechanical Properties: -
•  Food grade High density blue Static PVC rollers Each roller can be adjusted parallel to the bed by the turn of the adjustable screw located at the side on each roller assembly eliminating the problem of adjusting the rollers from both sides. It is also possible to adjust the rollers from both sides separately to adjust the settings as necessary.
• Roller adjustment from one side ensuring parallelism with the bed at all times, through all height adjustments.
• All chutes are s/steel
• Undercarriage precision built.
• Sturdy base frame for vibration free performance and accurate alignment.
• Crankshaft mechanism is fully balanced.
• Centrally lubricated
• Cushioned drive to ensure minimum vibration and maximum utilization of
machine prior to maintenance.
• Feed and discharge Chutes ensures for minimum tea handled and a continuous flow.
• Drive and rollers are driven independently via a reduction drive giving low energy consumption.
 
• High quality engineering felt on to pressure plate spring mounted ensures continuous even pressure for maximum pick up.
• High quality galvanized steel on the under carriage and drives.
• S/ Steel bolts and fixtures on all tea contacts points.
• Food quality S/ Steel dimpled tray (AISI304)
• Heavy duty construction of machine ensures trouble free, high quality sorting and reliability.

 
CLAIMS
1. Fibre Extractor fitted with roller or rollers in line with the flow of tea or other products;
the said rollers extracting fibre and sorting any kind of tea as it flows.
2. Fibre extractor of claim 1 comprising various sieves or meshes staggered in a 10 stepped orientation.
3. Fibre extractor of claim 2, having meshes mounted on an aluminium channel iron 60x40x6mm.
4. Fibre extracting of claim 1, the mechanical drive having a reciprocating action double crank system, the cranks at 180%. Toeach other.
5. Fible extractor of claiml, feed hopper tapering from the back to the front to allow the uniform spread of tea over the balls discharge mesh.
6. Fible extractor of claiml, where length, diameter and number of the roller is limitless.
7. Fibre extractor of claiml, where rotation of the roller or rollers can either be 25    clockwise or anticlockwise.

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