Patent GB-881033-A (GB)
Title: Cutting cigar binders or wrappers
IPC: A24C1/04
Filed: 1957-11-19
Abstract: 881,033. Cigar-making machines. INTERNATIONAL CIGAR MACHINERY CO. Nov. 19, 1957 [Nov. 23, 1956], No. 36046/57. Class 130. [Also in Group XVI] A vertically reciprocable suction table 28, Figs. 1 and 3, to which whilst at its lowest position a horizontally reciprocable suction head 26 on its rightward stroke delivers the leading end of a tobacco sheet material web W of width approximating to a cigar length is partially raised and suctionally operative during the leftward and suctionally inoperative stroke of the head 26 to bring a knife 32 on the table into coaction with rollers 146, 148 moving with the head and cut a transversely disposed binder (or wrapper) from the end of the web W held on the table 28. A knife 42, horizontally pivoted about a post 46 so as to be moved aside by the head 26 on its rightward stroke, is spring- urged to the position shown where it trims the web leading edge by coaction with a ledger plate 40 on an auxiliary detachable suction chamber 34 of the table 28 during its further upward movement to deliver the binder to a suctional transfer member T. A fixed auxiliary suction table 24, Fig. 8, assists the table 28 in retaining the web during cutting and retains each new leading end of the web until taken up by the head 26. Suction control means.-Communication between the table 28 and a chamber 56, Fig. 1, connected to a suction duct 304 is effected when the table rises and brings a connected tube 92 clear of a gasket 96 in the chamber 56. The duct 304 and ducts 106, 256 and 262 leading from the members 26, 24 and T respectively are fed from a chamber 108, Fig. 10, supplied by a main duct 110 and having duct-controlling slide valves 264, 266 operated by bell-cranks 272, 292 from cams on the main machine cam-shaft (Fig. 2, not shown). The valve 264 also controls air vents 286, 288 for the ducts 106, 256. Machine details.-The head 26, which is V- shaped in plan, is trunnioned by arms 114, Fig. 1, on a non-rotary shaft 116, a spring- loaded plunger 130 coacting with recesses of one arm 114 to hold the head in operative position as shown or in a raised inoperative position. The rollers 146, 148 are trunnioned on the shaft 116 by arms 142, 144 between which and fixed brackets 150, 152 are yieldable connections providing resilient operative pressure on the rollers 146, 148. The shaft 116 is supported at one end by a roller 134 traversing a guide 136 and at the other end is held in an arm 118 of a member 120 reciprocated on fixed rods 122 by an adjustable link connection 154 to an arm 156 of a shaft 160 oscillated via linkage from the main machine cam-shaft (Fig. 2, not shown) from which the table 28 is also reciprocated via linkage and a sliding rod 64 to a downward extent determined by an adjustable stop 86, 88. A detachable bin 325 receives waste cut off by the knife 42 whose post 46 is mounted on a bar 48 axially slidable between pins 62 on slackening a clamp 52, to allow coaction with differently sized chambers 34. The knife 32 is supported during cutting by two spaced parts 308 of a slidably supported plate 306, periodically withdrawn from operative position by a bracket 320 of the reciprocatory member 120 acting on a collar 316 fixed on a rod 310 on the plate, and, when cleared by the table 26 on partial ascent thereof, urged by a spring 318 acting between the collar 316 and a fixed collar 312 into an operative position defined by contact of a further rod collar 322 with the table 26. Auxiliary web-feeding means.-Intergeared feed rollers 20, 22 are intermittently driven in one direction from the arm 118 via a rack-andpinion 178, 180 and a one-way clutch 252. The web W passes to the rollers 20, 22 from a roll R, provided with a brake band 226 the unanchored end of which is attached to a sleeve 230 connected by a torsion spring to a rotatable shaft 232 carrying on an arm 238 web and brake band idler pulleys 240, 242 and having a projecton 244 engageable with a micro-switch 246 to stop the machine on web breakage. The arm 238 may be held up by a latch lever 248 to run the machine with no web feed. Separation of the rollers 20, 22 for web threading is effected by raising against spring loading a lever 194 fast with one of eccentric bearing parts 190 of the spindle of the roller 20, which parts bear in vertically slidable blocks 192 held against stop pegs by springs. The web roll R is supported on coned flanges 198, 200 the distance between which is adjustable for rolls of different width corresponding to finished cigars of different lengths on slackening a thumb screw 210 interconnecting their hubs 202, 208. Lateral roll adjustment is effected by a member 222 screwing in a fixed bracket 206 and carrying a freely rotatable disc 216 engaging a groove 214 of the flange 198. Specifications 881,034 and 881,035 are referred to. Reference has been directed by the Comptroller to Specification 810,676.