Patent GB-1045770-A (GB)
Title: Improved method of, and device for, removing a paper band from a mechanism applying adhesive in cigarette machines
IPC: A24C5/31
Filed: 1964-12-21
Abstract: 1,045,770. Cigarette-making machines. ZAVODY V. I. LENINA PLZEN, NARODNI PODNIK. Dec. 21, 1964 [Dec. 22, 1963], No. 51749/64. Heading A2C. A wrapper strip is removed from adhesive applying machanism in cigarette tipping machine or machines for connecting filters to cigarette lengths by a system of levers which ensure that if the whole machine is stopped the wrapper strip is moved away from the adhesive applying mechanism and the strip feed is stopped, but if a fault occurs in production the wrapper strip is moved away from the adhesive applying mechanism but the strip feed is not stopped. A wrapper strip 1, e.g. for connecting filter tips to cigarettes, passes over guide rollers 3, 4, 5 and 6, a driving roller 2 and adhesive applying roller 7. The operation of the cigarette making machine is controlled by a switch 10 which is operated by a lever 11, pivoted at 12. The lever 11 is connected by links 14 and 15 to an arm 16 which lifts the strip 1 off the adhesive applying roller when the lever 11 is rotated clockwise. A manually operable leve 22 is pivoted at 26 and connected to a two-armed lever 23, one arm 23<SP>1</SP> of which carries a roller 24 which presses the strip 1 into contact with the roller 2 to effect drive of the strip. The other arm 23<SP>11</SP> of the lever 23 has a recess 25 which co-operates with a spring-biased roller 33 and also carries a bearing 27 which is forked at its upper end to receive an arm 17, pivoted to the lever 11. A twoarmed lever 30 is pivoted in the bearing 26. One arm 30<SP>1</SP> of the lever 30 has a pin 20 which passes through one fork of the forked part of the bearing 27 and normally enters an opening 19 in the arm 17. The armature 40 of an electro-magnet 39 is connected to an arm 41, pivoted at 42, which, when the electro-magnet is energized, rotates the lever 30 clockwise as viewed in Fig. 4 against the action of spring 32 to release the pin 20 from the opening 19. Fig. 1 shows the parts in their normal working positions. If the whole machine is to be -stopped the lever 22 is rotated anti-clockwise. This rotates the lever 23 so that roller 24 moves away from roller 2 and the drive of the strip is stopped, and the roller 33 engages the recess 25 in the arm 23<SP>11</SP>. At the same time upward movement of the arm 23<SP>11</SP> moves the arm 17, by virtue of the pin and opening connection 20, 19, to move the lever 11 clockwise. Movement of lever 11 releases switch 10 to stop the machine and causes lifting of the strip 1 from the roller 7 by means of the arm 16. To restart the machine and return the parts to the positions shown in Fig. 1 the lever 22 is rotated clockwise. Should a fault develop during running of the machine, the electromagnet 39 is energized and arm 41 operated to release the pin 20 from the slot 19 and thus free arm 17. Lever 11 then rotates clockwise under the action of a spring 21. The machine is then stopped by release of switch 10 and the arm 16 operated to lift -the strip from the roller 7. The drive 24, 2, of the strip 1, however, remains unaffected. When the fault has been corrected the electro-magnet is de-energized. Arm 30 is thus urged anti-clockwise by the spring 32 and on movement of the lever 22 anti-clockwise the pin 20 enters the opening 19. A further, clockwise, movement of lever 22 restarts the whole machine.