US2189059A - Feeding of web material to cigarette tipping apparatus and other machines - Google Patents

Description

Feb. 6, 1940. G. 'DEARSLEY 5 FEEDING OF WEB MATERIAL TO CIGARETTE TIPPING APPARATUS AND OTHER MACHINES Filed Dec. 9, 1937 2 Sheets-Sheet 1 lNVENTOR GEORGE DEARS EY BY g ATTORNEY Feb. 6, 1940.

G. DEARSLEY FEEDING 0F WEB MATERIAL TO CIGARETTE TIPPING APPARATUS AND OTHER MACHINES Filed Dec. 9, 1937 2 Sheets-Shget 2 ATTORNEY Patented Feb. 6, 1940 PATENT OFFICE FEEDING OF WEB MATERIAL TO CIGA- RETTE TIPPING APPARATUS AND OTHER MACHINES George Dearsley, London, England, assignor to American Machine & Foundry Company, New f York, N. Y a corporation of New Jersey ApplicationDecember 9, 1937, Serial No. 178,973 I j I In Great Britain December 19, 1936 2" Qlaims This,inventionrelates to theilfeeding of web material from a sup-ply or reel and may be utilised tfor'the feeding of web material .to machines or mechanism such: as those employed in tipping i cigarettes with cork, gold or other 'material, in V which sections of thecork or the like are severed whom-the web and deliveredto the running wrapperweb or cigarette paper; being'applied thereto ion spacedadhesivepatches. I The invention is particularly useful in. web -=feeding mechanism of. the type in which the --severing-means are carriedv by a fixed mounting, and in* which the web of cork or the like is inter- .mittently 1" ed to the severing'means, the severance taking'place during rest periods of the feeding device, and the invention will be described as apxIDliBdItO such a' mechanism. I Itc'isto be understood, however, that the invention is not restrictedtothe case of an'intermittent feed to the severing'mechanism but. may be applied to con- ;tinuous' feeding arrangements.

' Js'TheJinVentiOn c'onsistsin means for'feeding a web from a reel to a severing device or other ":Jmechanism;wherein means aretprovided intermediate saidfeeding means and the reel, adapted to apply a slipping friction drivetov-theweb;

." According to the present invention the web is led from the supply reel into contact' with' a'fast running roll and thenthrough the intermittent or continuous feeding means, the fast running roll being adapted to provide a slipping friction drive for drawing the web from the supply reel and feeding it to the intermittent or continuous feeding means, whereby strain on the web occasioned by the feed rolls is avoided so that in the case of frail webs breakages are substantially eliminated. In the case of intermittent feed rolls no feeding action will be imparted from the fast running roll during the stationary periods of the feed rolls. Means may be provided for varying the amount of contact between the web and the fast running roll according to the material from which the web is composed.

Further features of the'invention will be hereinafter described.

The accompanying drawings illustrate the in-- vention as applied to a foil feeding mechanism as described in British specification No. 465.284.

only those parts which are particularly concerned foil feed mechanism somewhat of the type de- I detecting rolls 2I. shown) comprises" a knife mounted to reciprocate across the path of the web, the reciprocation being caused by a cam or other suitable device.

1 substantial arc.

driven at a high'speed and'provides -a friction running roll or drtun I I.

scribed in British, specification No. 4 5,224 the web of foil iil'is intermittently fed to the severing means (not shown) by a pair of feed rolls 22, 23 (Fig. l), of which 22 is driven through a Geneva mechanism as indicated in Fig. 1 the 5 driving member of the Geneva mechanism being designated 3!, and the driven member 30, the member 3| being fast on a driving shaft 32 and having an anti-friction stud-roll 33.

. The feed roll 22 derives its rotation through 1 gears 25, 26, 2'! and '28 from the driven Geneva the chain, such as that designated 26, and power K may be applied continuously to the shaft 24 by known or other suitable means.

On the way to the feed rolls'the web passes through a pairof The severing device (not- Intermediate thesupp-ly reel and the intermittent feed rolls a continuously driven roll 01:2

drum II is provided at a position such' that the web will engage the surface of the rollover a The roll II is adapted to be The surface of the roll I I may be serratedor '35 scored or provided with a suitable covering or coating to providethe desired slippingdrive on the web during the driving periods of the intermittent feed rolls.

Between the fast running roll II and the feed 40 rolls a tensioning device may be provided engaging the Web and comprising, for example, a roll I3 mounted upon a pivoted lever I4 and having a spring I5 for holding it in contact with the web.

Means may also be provided for varying the arcuate contact of the web with the fast running roll II so as to vary the driving effect according to the nature of the web. This may be efiected by the provision of a guide roll such as It over I which the web is passed on its way to the fast This guide roll I6 may be mounted for adjustment to vary the arc of contact of the web with the fast running roll. The fast running roll I I may be utilised for guid- 5 to draw the web from the feed roll or spool l2.

Owing to the nature of the drive, however, slipping occurs between the surface of the roll H and the web so that the web I 0 is only drawn off from the feed roll I2 in accordance with the forward feed of the intermittent feed rolls. During the non-driving period of the intermittent feed rolls there is a slackening of the web in the lap between the intermittent feed rolls and thefast running roll so that the latter imparts no driving efiect to the web and thus it is not drawn from the supply reel.

The slackening of the web between the intermittent feed rolls and the roll ll may however be taken up by the spring controlled lever 14 in which case the web l0 may be continuously,

drawn from the supply spool.

According to another arrangement the fast running roll I i may be arranged between a supply reel and a pair of continuously operating feed rolls. Such an arrangement is particularly suitable when feeding a web of material which is not strong enough to withstand localised stresses set up at the point where it passes through the feed roll where the gripping takes place along a transverse line. I

It sometimes happens that frail or delicate materials are broken at this point owing to high stresses on setting the reel in motion when starting the action or even during the feeding.

When using a high speed roll II the feed rolls when started cause the-web to be pulled taut around the contacting arc of the high speed roll so that the latter tends to impart motion to the web by reason of the friction. The feed rolls thus have only to provide sufficient tension in the web to increase the friction between the web and the high speed roll to such an amount that will set the supply reel'in motion. This frictional effort is spread over the whole surface of the web in contact with the high speed roll I 1 thus avoiding sudden change of stress in the web.

As soon as the feed'rolls cease to operate the high speed roll will overdrive slightly so that the tension in the web is reduced to such an extent that the friction is insufficient to draw the web from the reel.

Thus a draw-off means is provided which is brought into operation automatically by the ac- 1.0

comprising a drum disposed within, and contiguous to, a bight'of said web, means to drive said drum positively at aperipheral speed greater than that of the speed at which said web is to be delivered to the severing mechanism, and a guide and tensioning roll movable in an arouate path defining the delivery end of said'bight, a carrier lever having an arm in the free end of which said guide and tensioning roll is mounted for movement in saidv arcuate path, said carrier arm being mounted to oscillate around'the axis of said drum, and said roll carrier having another arm, and a spring to bias said last: named arm to move said guide and tensioning troll against the web, thereby to'maintainsaid bight yieldingly in slip contact with-said drum.v 2. Apparatus for feeding web material from a source of supply thereof to severing mecha'nism,

' said apparatus comprising feed rolls,"and draw- -oiT means including a continuously driven drum disposed intermediate the feed rolls and the source of supply,: said-drum engaging a 'lap of the web to provide a friction drivev for delivering the web from said source of supply, and means to drive said drum, at .a peripheral-speed substantially greater than that of the feed rolls,

- and wherein a tensioning device for the webis; located between the drum and the feed rolls, said device comprising a guide roll for the web, and air spring-controlled lever having an arm adapted to carry said roll and to press it normally into a bight of saidlap.

- GEORGE DEARSLEY.

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