Title of Invention

A DEVICE FOR LIFTING AND LOWERING THE HEAD ASSEMBLY OF A FIBRE PLUCKING MACHINE

Abstract

This invention relates to a device for lifitng and lowering the head assembly of a fibre plucking machine. A plurality of slings are fixedly mounted on the tower of the plucking machine. The other end of these slings are rotatably wound on roller members forming a part of the drive system. The drive system is located on the head 8-ssembly. It consists of a plurality of rollers rotatably mounted on a drivable shaft when the sling gets wound or unwound, the head is moved up or down.

Full Text

This invention relates to a device for lifting and lowering the head assembly of a fibre plucking machine. During fibre processing, a stock of row of fibres is fed from both the sides of the fibre processing machine. Plucking head assembly of the fibre processing machine is capable of travelling both vertically and horizontally in linear pathways. Semicircular movement of the plucking head is also possible in the existing system. Plucking of fibres from all sides of the stock fed to the assembly is therefore possible. In the convention fibre plucking machines lifting and lowering of the head assembly is achieved by a drive system wherein the drive medium such as a chain is connected to the head assembly. The other end of the chain is provided with counter weights for safety reasons. During operation, the drive rotates, thereby enabling the travel of the chain which in turn lifts and lowers the head assembly. The drive system of this known arrangement is housed in the tower of the plucking machine, and occupies considerable space therein. The existing system also requires expensive and complicated junction boxes for the control of the drive. Moreover, chain drives require frequent maintenance and cleaning and are prone to slip. Slippage of the chain results in lowering of the head when not required thereby causing damage to the machinery. The conventional drive system is also prone to unexpected failures. In order to overcome the above discussed disadvantages, we have developed a simple device for lifting and lowering the head assembly during fibre plucking process. The driving medium of the device developed by us consists of a set of slings. The drive system consisting of rollers, shaft and motor is housed on the head assembly itself. One end of each of the slings is fixed to the tower and the other end is fixed to the head arrangement through rotating elements or rollers of the drive system. A shaft connects the rollers and is driven by a motor. The drive of the motor winds or unwinds the slings on said shaft thereby lifting and lowering the head assembly as desired. The device for liftng and lowering the head assembly of a fibre plucking machine comprises a plurality of slings, one end of each of the slings being fixed on to the tower of said fibre plucking machine, the ends of said slings being fixed on said head assembly through roller means of a drive system mounted thereon, said drive system consisting of a plurality of roller means rotably mounted on a drivable shaft. This invention will now be described with reference to the single figure in the accompanying drawing. Figure 1 shows the device of the present invention. Reference numeral (5) indicates the tower of the fibre plucking machine, plurality of slings represented by (1) and (1") are fixedly mounted on the tower with the help of fixing means (7). Fixing means may be clamps or rivets. Plurality of rollers (4) and (4") are mounted on the head assembly, the other end of each of the sling is rotatably wound on these rollers. Head assembly of the plucking machine is shown by reference numeral (3). Drive means such as a motor is indicated by reference numeral (2). The shaft drivable by the motor is shown by reference numeral (6). When driven by the motor, the sling gets wound or unwound on the rollers thereby varying its length. This influences the vertical positioning of the head assembly. The application no. 196/MAS/99 describes and claims a detachable suction hood for a fibre processing machine. The application no. 197/MAS/99 describes and claims a drive system for rotating a turn table of a fibre plucking machine. The application no. 198/MAS/99 describes and claims an interchangeable grill assembly for textile plucking machine. The application no. 199/MAS/99 describes and claims a device for locking a plucking head of a fibre plucking machine. The application no. 201/MAS/99 describes and claims a plucking head assembly of a fibre plucking machine. Though this invention has been described herein above with a specific embodiment, alterations and modifications known to persons skilled in the art are within the scope and ambit of the appended claims. WE CLAIM : 1. A device for lifting and lowering the head assembly (3) of a fibre plucking machine comprising a plurality of slings (1, 1") one end of each of the slings being fixed on to a tower (5) of said fibre plucking machine, the ends of said slings (1, 1") being fixed on said head assembly (3) through roller means (4) of a drive system (2) mounted thereon, said drive system (2) consisting of a plurality of roller means (4) rotatably mounted on a drivable shaft (6). 2. The device as claimed in claim 1, wherein the slings (1, 1") are fixed on to the tower (5) by means of clamps, rivets and the like fastening means. 3. The device as claimed in claims 1 and 2, wherein the motor is drivably connected to the shaft for rotating the rollers. 4. A device for lifting and lowering the head assembly of a fibre plucking machine, substantially as herein described with particular reference to the figure in the accompanying drawings.

Documents:

0200-mas-1999 abstract-duplicate.pdf

0200-mas-1999 abstract.pdf

0200-mas-1999 claims-duplicate.pdf

0200-mas-1999 claims.pdf

0200-mas-1999 correspondence-others.pdf

0200-mas-1999 correspondence-po.pdf

0200-mas-1999 description (complete)-duplicate.pdf

0200-mas-1999 description (complete).pdf

0200-mas-1999 drawings-duplicate.pdf

0200-mas-1999 drawings.pdf

0200-mas-1999 form-1.pdf

0200-mas-1999 form-19.pdf

0200-mas-1999 form-26.pdf

0200-mas-1999 form-3.pdf

0200-mas-1999 form-5.pdf

0200-mas-1999 petition.pdf