US2181645A - Paper tube making machinery - Google Patents

Description

Nov. 28, 1939.

DA C. SPAULDING. JR

PAPER TUBE MAKING MACHINERY Filed Aug. 20, 1957 3 Sheets-Sheet l o o V EN w E QN f fl w" EN 4- A `uw n l f @E WN su .2 9N N n l J INVENTOR.

BY @5f/Zan 1 ATTO EY5.

NOV- 28, 1939- D c, SPAULDING. JR

PAPER TUBE MAKING MACHINERY Filed Aug. 20, 1957 5 Sheets-Sheet 2 INVENTOR. Ua VMI C. pau/Zz'lzyJr A TTORNEY Nov. 28, 1939. ID. c. sPAuLDlNG. JR

' PAPER TUBE MAKING MACHINERY INVENTOR.

ATTORNEY5',

. gripper is in open position-when opposite the y Patented Nov. 28, 1939 PAPER TUBE MAKING MACHINERY David C. Spaulding, Jr., Cleveland, Ohio, assignor to The Standard Oil Company,-Cleveland, Ohio, a corporation of Ohio Application August 20, 1937, Serial No. 160,029

20 Claims.

This invention relates to paper tube making machinery, and more particularly mechanism in 'which the tube structures are formed and intermittently discharged; and it is among the objects of the invention to provide a construction making possible a rapid through-put of convolute wound tubes, with or without special finishing operations as may be desired. Other objects and advantages will appear as the description proceeds.

To the accomplishment of the foregoing and related ends, the invention, then, comprises the features hereinafter fully described, and particularly pointed out in the claims, the following description and the annexed drawings setting forth in detail certain illustrative embodiments of the invention, these being indicative however, of but a few of the various ways in which the principle of the invention may be employed.

In said annexed drawings:

Fig. 1 is a side elevational view, partly in section, showing an embodiment of the invention; Fig. la is an enlarged detail elevation, partly in section, of the mandrel; Fig. 1b is a further enlarged section thereof taken on axplane substantially indicated by line Ib of Fig. 1a; Fig. 1c is an enlarged elevation detail of Fig. 1; Fig. 2 is an enlarged vertical section taken on a plane substantially indicated by line II, Fig. 1, and Fig. 2a is a fragmentary detail thereof showing the tabled driving-connections, Fig. 3 is a similar view, on larger scale, taken on a plane substantilly indicated by line III, Fig. 1; and Figs. 4, 5 and 6 are fragmentary details of the latter.

Referring more particularly to the drawings,

V there is shown a mandrel 2 which has its drive at the left in Fig. 1, and while the driving means may vary in detail as desired it may comprise in general a shaft 3 supported in framing 4 and having gearing G'suitably intermittently rotating the mandrel, while the web of cellulose stock or paper w, Fig. 2, is supplied from a stock roll not shown and passed through an adhesive applicator to the winding station on the mandrel. The stock or paper may be any suitable material for such purpose, and most usually kraft, chestnut board, chip-board, etc. for commoner products, or higher grade paper for spcial products as desired. The web w proceeding through the applicator receives on one side a coating of adhesive picked up and distributed from the pan 8 by the roller 9, and then proceeds over the feed table F to the mandrel. The latter is provided with a gripper I2, and timing thereof being such that the end of the advancing paper web, Suitable gripper-operating means may then close the gripper on the fed end, and on the rotation of the mandrel the desired layers are laid up to form a tube, whereupon the cutter I5 which is operated in timed relation by a cam on the machine drive shaft, severs the paper from the web. The gripper-operating means may comprise for instance a pinion I9, Fig. 1b, on a longitudinally-extending shaft I9a. within the mandrel and driving shaft 3 and conveniently being hollow. Depending'v mandrel, whether operating upon large or small tubes, there may be idler pinion connection I8, I8' between the driving pinion I9 and the toothed segment of the gripper I2, the idlers in .general being unnecessary for small sized tubes. With such construction, the slight turning movement of the gripper I2 for opening and closing against the coacting lip of the mandrel may be imparted by correspondingly slight turning movement of the drive pinion I9. This may for instance involve a camming action in relative rotation for the pinion shaft I9a with respect to the mandrel shaft 3, and upon the latter there may be slidably mounted a sleeve I9b so as to be rotatable with the shaft 3 and being anti-frictionally engaged by operating fork I9e which is reciprocated by engagement by a cam I9c on the shaft 48. Extending outwardly from the pinion shaft I9a is a pin I9d which rides in a transverse slot I 9j in shaft 3 and in an angular slot I9g in sleeve I9b, Fig. 1c, such that longitudinal reciprocation of the sleeve ISb causes the pin I9d to relatively slightly turn and correspondingly rotate the pinion I9 in the mandrel in timed relation. The feed-end of the paper web w being glued on its upper surface, proceeds over the guide roller g on the rear end of the feed table f under the detent-iinger d which prevents backslip of the web, the detent-nger being pivotally mounted at its upper end and being slightly longer than the vertical distance to the oor of the table, whereby to allow the paper web to proceed freely in the forward direction, but occasioning a wedging or grabbing by frictional engagement preventive of backward slippage. Forwardly of the detent-finger, the paper web proceeds through a slitter cutter r, if it be desired to sever the stock here for two tubes instead of one as wound by the mandrel. The slitter knife of course may be omitted when operating to formk one longer tube upon the size of the at a time rather than two end to end. Forwardly of the slitter is a feed nger mechanism which mayinclude a'frictionally-engaging nger Illa tion against the lower xed finger I0 by a hookshaped arm I 0b pivoted at the rear and having an angular arm I 0c from the end of which a 'tension spring extends to a point of anchorage on the side of the table. The arm |0c being oi center with respect to the tension spring occasions the impartation of a downward pressure through the hook-shaped arm IIJb when the latter is turned down against the finger Illa, but allowing such hook-shaped arm to be swung back upwardly, when desired, the tension spring then being past center in the other direction and serving to hold the hook out of engagement down on the finger Ina, thereby allowing easy threading of the paper past the nger. It will be understood that the entire table F with the structures which have just been described, is mounted for reciprocative movement back and forth toward and away from the mandrel, the table for instance being conveniently carried on rollers I2 riding on the support framing, and having a limited range of back and forth movement by reason of gudgeons extending into slots I3 in slide extensions below the general level of the table. Reciprocating movement of the table may be provided by a swing-arm I Ia connected through an equalizing link to a projection II of the table. The swingarm Ila is secured to a rock shaft IIb, which also has 4a xedly-attached lever arm I Ic, Fig. 2a, while a lever arm Ile whose one end is pivoted to the framing Ilh carries acam roller Ilf in engagement with a cam IIg on the shaft 48. The cam-arm Ile is connected with the rock shaft arm IIc by a link I I d. Thereby, with the turning of the cam raise II g the cam arm IIe is raised, and the bell-crank system I Ic-I I a is actuated to thrust the arm Ila and the table rearwardly.

On the further turning ofthe cam I Iw, the return spring H7' draws the table again forwardly. With the paper initially threaded through to position to be fed to and be gripped by the mandrelgripper I2, it is thus far seen that the web is in condition to be fed forwardly through the open cutter I5 and the pull-along dog d. The lower knife I5a of the pair is vertically movable into cutting and open positions by a suitable mechanis'm for the actuation of the cutter in timed relation with the feed such that the web is severed and the mandrel can complete its wind-up in the predetermined number of turns of body-forming. While the forward end of the paper is thus being held by being drawn forward by the rotating mandrel in its wind-up the feed table F is thrown back to its rear position, the feed dog or dent d sliding back freely over the paper. Then, after the knife I5 has severed the paper for the completion of the tube being wound, the

table F is in readiness to be advanced again to carry the projecting end of the web into the mandrel for a new cycle of wind-up. The movable knife I 5a may be operated within its guide I 5b for instance by a lever |50, Figs. 1 and 2f, actuated through a link I5d by a bell-crank type lever I5c having a follower in cam I5f.

In order to insure a smooth building of the body as wound on vthe mandrel, the wound-up layers are advantageouslycompacted down by av roller 20, which is brought into operation by suitable means, as for instance a cam 20a actuating a lever arm 20h which is in the form of a bellcrank lever fulcrumed to the framing and whose other arm 20c is attached to the arm 20d carrying the roller 20. By means of such construction, any slight adjustment -necessary may be provided, there being a slot take-up between the arms 20c instance a cam 26 operating the lever 21 whose upper end is pivoted to the framing, and a link 28 and another lever 29 pivoted at its lower end connects .througha link 30 to the slide 3| which carries the ejector whereby to reciprocate it in timed relation with the rotation of the mandrel. Where desired, the ejector may thus discharge' the tubes from the mandrel. Or preferably the arrangement may be such as to advance it to a next stage where the wound-up tube body receives its further surfacing. Particularly where lower grade stock is used for the building of the body, it is desirable to have also means for supplying a cover which may be of suitable high grade or special stock or it may be a label. For this, a'feed table 35, Fig. 3, is arranged to receive a stack of the cover sheets, and an adhesive roller is provided for coating at least the tail end of the sheet as it is advanced into winding position, to assure its smooth seam union. 'I'he table 35 is arranged to carry a stack of the cut sheets of such special stock as is to be applied for the finishing layer of thecover, and the table is vertically movable so as to present the topmost sheet in suitable posi-y tion for engagement by the mandrel. A spring 36 for instance may be provided to pull the table into uppermost position while its downward movement may be effected.. positively by a cam 36g coacting with a cam roller 36h on the pull-arm 36a which is pivoted at one end to the frame, and at its other end engages by slot 36h with a pin 36e on a lever arm 36d operating against a roller 36e at the lower end of the table stem 362'. The height to which the table rises at any given time when cam 36g is turned into its inactive position depends upon the height of the stack of sheets on the top of the table and the guard finger 50 which is carried by the table and coordinates the feed such that the top sheet of the stack is properly presented at each timed cycle. The guard finger 50 is so mounted in the table as to have a ratchetwise descent. A smoothing roller 40 is arranged to coact for smoothing the applied cover sheet operated by an arm 4|, preferably including a take-up adjustment 42, pivoted to a lever 43 which supports the roller 40 from a pivot point of mounting on the frame. The arm 4| may be reciprocated up and down in timed relation with the rest of the machine by suitable means, as for instance a lever 44 pivotally connected at one end 45 to the frame and having its free end arranged for operation through a cam-roller 44a by a cam 44h on shaft 48, 'Ihe sheets from the table 35 are fed one'at a time by each raise bringin'g the topmost with its advance end in roll-up feed contact with the table body on the mandrel, and guard finger 50 is arranged to normally just contact the tube on the mandrel 2. As the sheets are removed from the stack progressively, the table 35 is correspondingly raised, and the guard finger 50 correspondingly retracts as needed, by its escapement ratchet, which may include a spring pawl 52, coacting with the ratchet toothed stem 53 of the guard finger.

The operation of the machine will be clearly understood from the foregoing. The paper web w fed from its roll is coated with adhesive by the roller 9 and is forwarded to the feed table F and into the gripper I2, the mandrel in its beginning cycle of rotation, turning, with prompt closure of the gripper, and thence winding the sheet stock into tube form in whatever number of layers is desired. In its travel over the feed table F, it will be understood that the paper web proceeds over the guide roller g past detent d to slitter r, the detent d serving to vwedge andhold the paper against back-slacking, and the forward end of the paper web comes between the lower feed iinger I0 and the upper feed finger Illa, the finger Illa sliding over the paper web, but frictionally gripping it on forward feeding movement to the mandrel-gripper l2 which by the timing is open at that instant. Being gripped then in the mandrel, the latter then rapidly rotating to two or for instance four or more turns, builds up the desired body thickness, the cutter knife I5a having severed the paper. With further turning of the mandrel, the smoothing roller 20 being meantime in operation against the paper, the successive layers are laid down and are bonded by the adhesive, to the completed wind-up of the cut portion. Thereupon, the ejector collar 25 is moved forwardly by its slide 3l and associated mechanism and the mandrel gripper I2 is opened, and the mandrel is cleared for the reception of the on-coming end of the advancing paper web as fed by the reciprocating fingers I0, Illa. The tube wound and pushed along by the ejector collar 25 is now in position opposite the table 35, where for instance a stack of cover sheets is in place, and at this juncture the table is raised to feed the topmost sheet to the tube, and since the outside of the wound-up paper constituting the tube is the adhesive-coated side the sheet as raised with its advance end thereagainst adheres and winds onto the rotating tube. The upper position of the table 35 is gauged by guard linger 50 whose functioning prevents feed of more than one thickness of paper to the tube at a time, the guard finger being automatically compensated to the diminishing stack of sheets on the table, by being pushed down past the spring pawl 52, as necessary, and intermediate compensation being given by the compensating tip 5l which is spring urged by spring 5|a. The portion 5| is suitably supported along 5Ia in a bore. As the table 35 raises and then lowers, its motion through slotted link 38 operates a ratchet pawl 38a against ratchet wheel 38h and in lowering thereby turns the feed roller 39 suitably to apply adhesive to a sufficient sealing portion of the uppermost sheet which is started in contact against and is being wound onto the tube on the mandrel 2. The return throw of the ratchet pawl 38a may be accomplished by a spring 38d whose tension may be adjusted by clamping its anchoring bolt at the point desired in the slot of the bracket 38C. The smoothing roller 4U, raised into position by the spring 44h holds an even pressure against the rapidly rotating tube, and the cover is smoothly applied. The ejector collar 25 thereupon moves to slide the tubes ahead of it further along the mandrel, clearing the positions for the further stage of operations.

Other modes of applying the principle of the invention may be employed, change being made as regards the details described, provided the features stated in any of the following claims, or the equivalent of such, be employed.

I therefore particularly point out and distinctly claim as my invention:

1. In tube making apparatus, a mandrel having a free end permitting discharge of tubes formed, means for rotating the mandrel, means for applying adhesive to a web of cellulose, means for winding the latter convolutely on the mandrel, means for severing the web in suicient length for a tube, means for compacting the tube, means for surfacing the tube including a feed table for a stack of cover sheets and means for applying adhesive to the topmost sheet thereof and means for stepwise raising the table to contact such topmost sheet with the tube before winding the sheet on the tube, and means for pushing the Wound tubes from the winder means to the surfacing means and to discharge by stages.

2. In tube making apparatus, a mandrel having a free end permitting discharge of tubes formed; a shaft for rotating the mandrel; means for applying adhesive to a web of cellulose; a feed table passing the cellulose web to the mandrel; gripping means in said mandrel including an oscillatable gripper member provided with gear teeth, pinion means engaging therewith, a pinion shaft in a hollow bore of the mandrel shaft for operating the pinion means, a pin carried by Said pinion shaft, a transverse camming slot in the mandrel shaft receiving said pin, a sleeve axially reciprocable on the mandrel shaft, an angularlydirected camming slot in said sleeve, alever for reciprocating said sleeve, and a cam for operating said lever; means for reciprocating said feed table to and from the mandrel; an anti-friction roller mounting for said feed table in association with slot-means for limiting the motion range; a. web detent and slitter and resilient gripper linger on said table; a. pressure arm for said gripper finger and an operating arm and de-centering spring connected therefrom to the table for holding the pressure arm in on or off positions; cut-off means including a vertically movable shear blade, and

mandrel; tube-finishing means including a vertically movable table for supplying final cellulose layer material to the tube, a gluing roller cooperating with said table, means controlled by the movement of the table for turning said roller, a guard finger on said table for restricting the sheet feed, a resilient release pawl allowing progressive descent of the guard finger, a spring-supported compensating tip on saidguard finger; timing cam means for operating said table; and a smoothing rollerV movable to and away from the mandrel, spring means for urging the roller toward the mandrel, and cam means for withdrawing the roller in timed relation to the sheet feed from said table.

3. In tube making apparatus, a mandrel having a free end permitting discharge of tubes formed; a shaft for rotating the mandrel; means for. applying adhesive to a web of cellulose; a feed table passing the-cellulose web to the mandrel; gripper means in said mandrel including an oscillatable gripper member provided with gear teeth, pinion e means engaging therewith, a pinion shaft in a detent and slitter and resilient gripper nger on said table; a pressure arm for said gripper nger and an operating arm and de-centering spring connected therefrom to the table for holding the pressure arm in on or off positions; cut-olf means including a vertically movable shear blade, and a timing cam and connections for operating said blade; a swingable roll-down roller for smoothing the tube as built, means for adjusting the swing of said roller relative to the mandrel; timing cam means for operating said roller to and from the mandrel; tube-finishing means including a vertically movable table for supplying iinal cellulose layer material to the tube, a gluing roller cooperating with said table, means controlled by the movement of the table for turning said roller, a guard iinger on said table for restricting the sheet feed, a resilient release pawl allowing progressive descent of the guard nger, a springsupported compensating tip on said guard finger; timing cam means for operating said table; and a smoothing roller movable to and away from the mandrel, and cam means for withdrawing the roller in timed relation to the sheet feed from said table.

4. In tube making apparatus, a mandrel having a free end permitting discharge of tubes formed; a shaft for rotating the mandrel; means for applying adhesive to a web of cellulose; a feed table passing the cellulose web to the mandrel; gripper means in said mandrel including an oscillatable gripper member provided with gear teeth, pinion means engaging therewith,a pinion shaft in a hollow bore of the mandrel shaft for operating the pinion means, a pin carried by said pinion shaft, a transverse camming slot in the mandrel shaft receiving said pin, a sleeve axially reciprocable on the mandrel shaft, an angularly-directed camming slot in said sleeve, a lever for reciprocating said sleeve, and a cam for operating said lever; means for reciprocating said feed table to and from the mandrel; an anti-friction roller mounting for said feed table in association with slot-means 'for limiting the motion range; a web detent and slitter and resilient gripper finger on said table; a pressure arm for said gripper finger and an operating arm and de-centering spring connected therefrom to the table for holding the pressure arm in on or 01T positions; cut-olf means including a vertically movable shear blade, and a timing cam and connections for operating said blade; a swingable roll-down roller for smoothing the tube as built, means for adjusting the swing of said roller relative to the mandrel; timing cam means for operating said roller to and from the mandrel; tube-finishing means including a vertically movable table for supplying nal cellulose layer material to the tube, a gluing roller cooperating with said table, a guard finger on said table for restricting the sheet feed, a resilient release pawl allowing progressive descent of the guard finger, a spring-supported compensating tip on said guard finger; timing cam means for operating said table; and a smoothing roller movable to and away from the mandrel, and cam means for withdrawing the roller in timed relation to the sheet feed from said table.

5. In tube making apparatus, a mandrel having a free end permitting discharge of tubes formed; a shaft for rotating the mandrel; means for applying adhesive to a web of cellulose; a feed table passing the cellulose web to the mandrel; gripper means in said mandrel including an oscillatable gripper member provided with'gear teeth, pinion means engaging therewith, a pinion shaft in a hollow bore of the mandrel shaft for operating the pinion means, a pin carried by said pinion shaft, Aa transverse camming slot in the mandrel shaft receiving said pin, a sleeve axially reciprocable on the mandrel shaft, an angularly-directed camming slot in said sleeve, a lever for reciprocating said sleeve, and a. cam for operating said lever; means for reciprocating said feed table to and from the mandrel; an anti-friction roller mounting for said feed table in association with slot-means for limiting the motion range; a web detent and slitter and resilient gripper linger .on said table; a pressure arm for said gripper finger and an operating arm and de-centering spring connected therefrom to the table for holding the pressure arm in on or olf positions; cutoff means including a vertically movable shear blade, and a timing cam and connections for operating said blade; a swingable roll-down roller for smoothing the tube as built, means for adjusting the swing of said roller relative to the mandrel; timing cam means for operating said roller to and from the mandrel; tube-finishing means including a vertically movable table for supplying final cellulose layer material to the tube, a gluing roller cooperating with said table, a guard iinger on said table for restricting the sheet feed, a resilient release pawl allowing progressive descent of the guard finger; timing cam means for operating said table; and a. smoothing roller movable to and away from the mandrel, and cam means for withdrawing the roller in timed relation to the sheet feed from said table.

6. In tube making apparatus, a mandrel having a free end permitting discharge of tubes. formed; a shaft for rotating the mandrel; means for applying adhesive to a web of cellulose; a feed table passing the cellulose web to the mandrel; gripper means in said mandrel including an oscillatable gripper member provided with gear teeth, pinion means engaging therewith, a pinion shaft in a hollow boreof the mandrel shaft for operating the pinion means, a pin carried by said pinion shaft, a transverse camming slot in the mandrel shaft receiving said pin, a sleeve axially reciprocable on the mandrel shaft, an singularly-'directed camming slot in said sleeve, a lever for reciprocating said sleeve, and a cam for operating said lever; means for reciprocating said feed table to and from the mandrel; an anti-friction roller mounting for said feed table in association with slot-means for limiting themotion range; a web detent and slitter and resilient gripper nger on said table; a pressure arm for said gripper finger and an operating arm and de-centering spring connected therefrom to the table for holding the pressure arm in on or olf positions; cut-01T means including a 'vertically movable shear blade, and a timing cam and connections for operating 'said blade; aswingable roll-down roller for smoothing the tube as built; timing cam means for operating said roller to and from the mandrel; tubefinishing means including a vertically movable table forsupplying nal cellulose layer material to the tube, a gluing roller cooperating with said table, a guard nger on said table for restricting the sheet feed, a resilient release pawl allowing progressive descent of the guard linger; timing cam means for operating said table; and a smoothing roller movable to and away from the 7. In tube making apparatus, a mandrel having a free end permitting discharge of tubes formed; a shaft for rotating the mandrel; means for applying adhesive to a web of cellulose; a feed table passing the cellulose web to the mandrel; gripper means in said mandrel including an oscillatable gripper member provided with gear teeth, pinion means engaging therewith, a pinion shaft in a hollow bore of the mandrel shaft for operating the pinion means, a pin carried by said pinion shaft, a. transverse camming slot in the mandrel shaft receiving said pin, a sleeve axially reciprocable on the mandrel shaft, an angularlydirected camming slot in said sleeve, a lever for reciprocating said sleeve, and a cam for operating said lever; means for reciprocating said feed table to and from the mandrel; an anti-friction roller mounting for said feed table in association with slot-means for limiting the motion range; a web detent and slitter and resilient gripper finger on said table; a pressure arm for said gripper finger and an operating arm and de-centering spring connected therefrom to the table for holding the pressure arm in on or off positions; cut-off means including a vertically movable shear blade, and a timing cam and connections for operating said blade; a swingable roll-down roller for smoothing the tube as built; timing cam means for operating said roller to and from the mandrel; tube-finishing means including a vertically movable table for supplying nal cellulose layer material to the tube, a gluing roller cooperating with said table, a guard nger on said table for restricting the sheet feed, a resilient release pawl allowing progressive descent of the guard nger; and timing cam means for operating said table.

8. In tube making apparatus, a mandrel having a free end permitting discharge of tubes formed; a shaft for rotating the mandrel; means for applying adhesive to a web of cellulose; a feed table passing the cellulose web to the mandrel; gripper means in said mandrel including an oscillatable gripper member provided with gear teeth, pinion means engaging therewith, a pinion shaft in a hollow bore of the mandrel shaft for operating the pinion means, a pin carried by said pinion shaft, a transverse camming slot in the mandrel shaft receiving said pin, a sleeve axially reciprocable on the mandrel shaft, an angularlydirected camming slot in said sleeve, a lever for reciprocating said sleeve, and a cam for operating sadi lever; means for reciprocating said feed table to and from the mandrel; an anti-friction roller mounting for said feed table in association with slot-means for limiting the motion range; a web detent and slitter and resilient gripper nger on said table; a pressure arm for said gripper finger and an operating arm and decentering spring connected therefrom to the table for holding the pressure arm in on or off positions; eut-off means including a vertically movable shear blade, and a timing cam and connections for operating said blade; a swingable rolldown roller for smoothing the tube as' built;

timing cam means for operating said roller to and from the mandrel; tube-finishing means including a vertically movable table for supplying nal cellulose layer material to the tube; a gluing roller cooperating with said table, a guard finger on said table for restricting the sheet feed; and timingcam means for operating said table.`

9. In tube making apparatus, a mandrel having a free end permitting discharge of tubes formed; a shaft for rotating the mandrel; means for applying adhesive to a web of cellulose; a

feed table passing the cellulose web to the mandrel; gripper means in said mandrel including an oscillatable gripper member provided with gear teeth, pinion means engaging therewith, a pinion shaft in a hollow bore of the mandrel shaft for operating the pinion means, a pin carried by said pinion shaft, a. transverse camming slot in the mandrel shaft receiving said pin, `a sleeve axially reciprocable on the mandrel shaft, an angularly-directed camming slot in said sleeve, a lever for reciprocating said sleeve, and a cam for operating said lever; means for reciprocating said feed table to and from the mandrel; an antifriction roller mounting for said feed table in association with slot-means for hunting the motion range; a web detent and slitter and resilient gripper finger on said table; a pressure arm for said gripper finger and an operating arm and de-centering spring connected therefrom to the table for holding the pressure arm in on or olf positions; cut-off means including a vertically movable shear blade, and a timing cam and connections for operating said blade; a swingable roll-downroller for smoothing the tube as built; timing cam means for operating said roller to and from the mandrel; tubefinishing means including a vertically movable table for supplying final cellulose layer material to the tube; a gluing roller cooperating with said table; and timing cam means for operating said table. Y

10. In tube making apparatus, a mandrel having a free end permitting discharge of tubes formed; a shaft for rotating the mandrel; means for applying adhesive to a web of cellulose; a feed table passing the cellulose web to the mandrel; gripper means in said mandrel including an oscillatable gripper member provided with gear teeth, pinion means engaging therewith, a pinion shaft in a hollow bore of the mandrel shaft for operating the pinion means, a pin carried by said pinion shaft, a transverse camming slot in the mandrel shaft receiving said pin, a sleeve axially reciprocable on the mandrel shaft, an angularlydirected camming slot in said sleeve, a. lever for reciprocating said sleeve, and a cam for operating said lever; means for reciprocating said feed table to and from the mandrel; an anti-friction roller mounting for said feed table in association with slot-means for limiting the motion range; a web detent and slitter and resilient gripper finger on said table; a pressurearm for said gripper nger and an operating arm and de-centering spring connected therefrom to the table for holding the pressure arm in on or off positions; cut-off means including a vertically movable shear blade, and a timing cam and connections for operating said blade; a swingable rolldown roller for smoothing the tube as built; and means for operating said roller to and from the mandrel.

.11. In tube making apparatus, a mandrel having a free end permitting discharge of tubes formed; a shaft for rotating the mandrel; means for applying adhesive to a web of cellulose; a feed table passing the cellulose web to the mandrel; gripper means in said mandrel including an oscillatable gripper member provided with gear teeth, pinion means engaging therewith, a pinion shaft in a hollow bore of the mandrel shaft for operating the pinion means, a pin carried by said pinion shaft, a transverse camming slot in the mandrel shaft receiving said pin, a sleeve axially reciprocable on the mandrel shaft, an angularlydirected camming slot in said sleeve, a lever for f fil reciprocating said sleeve, and a cam for operating said lever; means for reciprocating said feed table to and from the mandrel; an anti-friction roller mounting for said feed table in association with slot-means for limiting the motion range; a web detent and slitter and resilient gripper finger on said table; a pressure arm for said gripper nger and an operating arm and de-centering spring connected therefrom to the table for holding the pressure arm in on or 01T positions; and cut-oli means including a vertically movable shear blade, and a timing cam and connections for operating said blade.

12. In tube making apparatus, a mandrel having a free end permitting discharge of tubes formed; a shaft for rotating the mandrel; means for applying adhesive to a web of' cellulose; a feed table passing the cellulose web to the mandrel; gripper means in said mandrel including an oscillatable gripper member provided with gear teeth, pinion means engaging therewith, a pinion shaft in a hollow bore of the mandrel shaft for operating the pinion means, a pin carried by said pinion shaft, a transverse camming slot in the mandrel shaft receiving said pin, a sleeve axially reciprocable on the mandrel shaft, an angularly-directed camming slot in said sleeve, a lever for reciprocating said sleeve, and a cam for operating said lever; means for reciprocating said feed table to and from the mandrel; an antifriction roller mounting for said feed table in association with slot-means for limiting the motion range; a web detent and slitter and resilient gripper nger on said table; a pressure arm for said gripper finger and an operating arm and de-centering spring connected therefrom to the table for holding the pressure arm in on or olf positions; and means for cuttingthe Web.

13. In tube making apparatus, a mandrel having a free end permitting discharge of tubes formed; means for rotating the mandrel; means for supplying cellulose sheet material to the mandrel, including a vertically movable table, a guard finger on said table for restricting the sheet feed, a resilient release pawl allowing progressive descent of the guard finger; and means for operating said table.

14. In tube making apparatus, a mandrel having a free end permitting discharge of tubes i, formed; a shaft for rotating the mandrel; means for feeding a web of cellulose to the mandrel; tube-finishing means including a vertically movable table for supplying nal cellulose layer material to the tube, a gluing roller cooperating with said table, a guard finger on said table for restricting the sheet feed; and timing cam means for operating said table.

15. In tube making apparatus, a mandrel having a free end permitting discharge of tubes formed; means for rotating the mandrel; means for supplying cellulose sheet material to Athe mandrel, including a vertically movable table, a guard` finger on said table for restricting the sheet feed, a spring-urged compensating tip in said guard finger, a resilient release pawl allowing progressive descent of the guard nger; and means for operating said table.

16. In tube making apparatus, a mandrel having a free end permitting discharge of tubes formed; means for rotating the mandrel; means for supplying cellulose sheet material to the mandrel, including an intermittently vertically movable table, a guard finger on said table for restricting the sheet feed, a resilient release pawl allowing progressive descent of the guard finger; spring means for operating said table; an adhesive-applying roller above said table to be engaged by the topmost sheet of the stack thereon; a ratchet-drive for said roller, including a lostmotion link actuated by said table for operating said ratchet drive; and a smoothing roller engageable against the sheet supplied to the mandrel.

17. In tube making apparatus, a mandrel having a free end permitting discharge of tubes formed; means for rotating the mandrel; means for supplying cellulose sheet material to the mandrel, including an intermittently vertically movable table, a guard finger on said table for restricting the sheet feed, a resilient release pawl allowing progressive descent of the guard nger; spring means for operating said table; an adhesive-applying roller above said table to be engaged by the topmost sheet of the stack thereon; a ratchet-drive for said roller, including a lostmotion link actuated by said table for operating said ratchet drive; a smoothing roller engageable against the sheet supplied to the mandrel; and cam means for intermittently controlling said smoothing roller.

18. In tube making apparatus, a mandrel having a free end permitting discharge of tubes formed; means for rotating the mandrel; means for supplying cellulose sheet material to the mandrel, including an intermittently vertically movable table, a guard finger on said table for restricting the sheet feed, said guard finger being mounted for progressive descent in accordance with the height of the stack of sheets; an adhesive-applying roller above said table to be engaged by the topmost sheet of the stack thereon; means for driving said adhesive-applying roller in timed relation ywith the movement of the table; a smoothing roller engaged to the sheet supplying the roller; and means for intermittently applying said last-named roller.

19. In tube making apparatus, a mandrel having a free end permitting discharge of tubes formed; means for rotating the mandrel; means for supplying cellulose sheet material to the mandrel, including a vertically movable table, a guard ngeron said table for restricting the sheet feed, a spring-urged compensating tip on said guard finger; an adhesive-applying roller above said table to be engaged by the topmost sheet of the stack thereon; a ratchet drive for said roller; a lost-motion link for operating said ratchet-drive; a smoothing roller engageable against the sheet supplied to the mandrel; and means for intermittently controlling said last-named roller.

20. In tube making apparatus, a hollow mandrel having a free end permitting discharge of tubes formed; means for rotating the mandrel, including a hollow driving shaft; means for supplying cellulose tube-forming material to the mandrel; gripper means in said mandrel including an oscillatable gripper member provided with gear teeth, pinion means engaging said gear teeth,

a pinion shaft extending axially in said hollow K

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