US2548451A

US2548451A - Apparatus for forming paper strips into continuous label forming bands for yarn and the like

Info

Publication number: US2548451A
Application number: US84186A
Authority: US
Inventors: Stanley E Tribbey
Original assignee: Caron Spinning Co
Current assignee: Caron Spinning Co
Priority date: 1949-03-29
Filing date: 1949-03-29
Publication date: 1951-04-10
Anticipated expiration: 1968-04-10

Description

April 10, 1951 s. E. TRIBBEY APPARATUS PoR FURMING PAPER STRIPS INT0 CONTINUOUS LABEL FURMTNG BANDS PoR YARN AND THE LIRE 11 Sheets-Sheet 1 Filed March 29, 1949 prll l0, 1951 s. E. TRIBBEY f APPARATUS PoR FORMING PAPER STRIPS INTO CONTINUOUS LABEL FORMING BANDS PoR YARN AND THE LIKE 11 Sheets-Sheet 2 Filed March 29, 1949 Apnl l0, 1951 s. E. TRIBBEY APPARATUS PoR PORMING PAPER STRIPS INT0 .CONTINUOUS LABEL FORMING BANDS PoR YARN AND THE LIKE 11 Sheets-Sheet 3 Filed March 29, 1949 plll 10, 1951 s. E. TRIBBEY APPARATUS POR EORNING PAPER sTRIPs INTO CONTINUOUS LABEL FORMING BANDS POR YARN AND THE LIKE Filed March 29, 1949 11 Sheets-Sheet 4 wml April 10, 1951 s. E. TRIBBEY 2,548,451

APPARATUS FOR FORMING PAPER STRIPS INTO CONTINUOUS LABEL FORMING BANDS FOR YARN AND THE LIKE Filed March 29, 1949 11 Sheets-Sheet 5 s. E. TRlBBl-:Y 2,548,451 APPARATUS FOR F PAPER sTRTPs INT0 co EL FoRMTNG BANDS D THE LIKE ORMING NUOUS LAB R YARN AN 'April l0, 1951 Filed March 29, 1949 1l Sheets-Sheet 6 April 10, 1951 s. E. TRIBBEY APPARATUS FOR PORNTNG PAPER STRIPS INTO CONTINUOUS LABEL FORNING BANDS FOR YARN AND THE LIKE 11 Sheets-Sheet 'I Filed March 29, 1949 11 Sheets-Sheet 8 Aprll 10, 1951 s. E. TRIBBEY APPARATUS FOR FORMING PAPER ST INT0 CONTINUOUS LABEL FOEMIN BANDS EoR YARN AND THE LIKE Filed March 29, 1949 E Elllll lll/IL prll 10, 195i s. E TRlBBEY 2,548,45

APPARATUS FOR FORMING PAPER STRIPS INTO CONTINUOUS LABEL FORMING BANDS FOR YARN AND THE LIKE ll Sheets-Sheet 9 Filed MaI Gh 29, 1949 Apri m, 1951 s E TmBB'EY 2,545,451

APPARATUS FOR FORMING PAPER STRIPS INTO CONTINUOUS LABEL FORMING BANDS FOR YARN AND THE LIKE Filed March 29, 1949 l1 Sheets-Sheet 10 5y MKQMJ@ April l0, 1951 s, E, TRlBBEY 2,548,451

APPARATUS FOR FORMING PAPER STRIPS INTO CONTINUOUS LABEL FORMING v BANDS FR YARN AND THE LIKE Filed MalQhZQ, 1949 11 SheepS-Sheet 11 QZO Patented Apr. 10, 1951 APPARATUS FOR FORMIN'G'PAPER STRIPS INTO CONTINUOUS LABEL FORMTNG BANDS FOR YARN AND THE LIKE Stanley E. Tribbey, Chicago, Ill., assigner to Caron Spinning Company, Rochelle, Ill., a corporation of Illinois Application March 2.9, 1949, Serial No. 84,186A

claims. (c1. 93-81') 1 This invention relates to a machine for making paper bands such, for example, as those used for banding yarn skeins; and the primary object is to provide a machine of that character which is fully automatic and will produce finished bands at a rapid rate.

Another object is to provide a band-making machine which will not only make the hands but will, at the same time, print thereon the lot numbers and colors or other identifying information pertinent to each lot or order.

The machine herein described and illustrated in the accompanying drawings automatically feeds strips of paper, one at a time, to a rotating mandrel to which each strip, inv turn, is adhered by suction, whereby it is 'caused to wind around the mandrel to form a band of prescribed diameter. During each rotation of the mandrel, with an attached paper strip, glue or other adhesive is applied to the leading marginal surface of the strip; and thereafter, at the end of a complete revolution of the mandrel, the trailing marginal surface of the paper strip is pressed against the adhesive-coated leading marginal surface, thus securing together the two ends of the band. Immediately following the foregoing band-winding and glueing operation, the finished band is automatically ejected from the mandrel; and another paper strip is thereafter fed to the mandrel. Concurrently with each band-forming operation, the aforementioned printing operation is performed on the band, the mandrel itself serving as a' platen. Y

The novel features of this invention can best be explained with reference to the drawings which accompany this specification, wherein:

v Fig. 1 is a `view of=the-machine in side elevan tion;

Fig. 2 is an enlargement of a portion-of Fig. 1, with certain parts shown inl section;

Fig. 3 is a fragmentary plan view;

Fig. 4 is a section taken at line 4 4 of Fig. 2;

Fig. 5 is a-section taken at line 5-5 of Fig. 2:

Fig. 6 is a detail sectional View taken at line E-- of Fig. 4, showing the major components of the machine in thepositions which they7 occupy immediately prior to the commencement of a band-winding operation;

Fig. '7 .is an enlarged section taken at line 'i-l of Fig. 4, de ioting the commencement of a band-winding operation;

Fig. 8 is a section taken at line 8 8 of Fig. 1. illustrating an intermediate stage of the handn Winding operation, wherein adhesive is being ap- E 2 plied to the marginalsurface adjacent the leading edge of the paper strip;

Fig. 9 is an enlarged detail of a portion of Fig. 8, illustrating more clearly the application of adhesive to the paper band;

Fig. 10 is a plan view of the adhesive-applying arm and roller, taken at line llilll of Fig. 8;

Fig. 11 is a section at line H-ll of Fig. 8, showing thevacuum-actuated latch mechanism which functions to prevent upward movement of the adhesive applicator in the absence of astrip of paper on the-winding mandrel;

Fig. 12 is an enlarged detail of a portion of camshaft, showing the outlines and relative an-v gular relations of the several cams;

Fig. 1'7 is a section taken'at line ll-l'l of Fig.

4, showing the chain drives for both the winding mandrel and the printing roller, and the mechanism for operating the valve by means of whichl compressed air is admitted, at'the end of each cycle of operation, to the pressure cylinder which serves to actuate the band ejector;

Fig. 18 is a diagrammatic showing of theY mandrel with a completed band thereon ready for ejection;

Fig. 19 is an enlarged section taken at line Iii-i9 of Fig. 17, illustrating the band-ejector mechanism; and f Fig. 20 is an elevational view of the winding' mandrel and ejector mechanism, together with' a showing of the vacuum pump and pipe connections; v 1 1 Referring first to Fig. 1, the subject bandforming machine is identified as a whole hy ref# erence numeral I8; and this is operativelyassociated with a Davidson suction-type feeder which is identied in its entirety by reference numeral l2.V Inasrnuch as the feeder is a well-Y known commercialdevice used extensively in printing establishments, there is no occasion to*v describe the same beyond what is necessary to l clarify its operative relationship to the machine l0.

a portion of Fig.'

The feeder I2 includes a platform I3 on which is supported a stack I4 of paper strips 35 from which the bands are formed; and said platform is automatically moved upwardly by a counterweight l5 as the strips of paper are withdrawn from the top of the stack. A suction pick-up device designated as a whole by reference numeral I 6 picks up the strips of paper, one at a time, from the top of stack I4 and feeds them into the bite of feed rollers Il and I8 by means of which the sheets are transferred to a belt conveyor and thence to the band-forming machine. It is to be understood that the bandforming machine I0 and feeder I2 are mechanically coordinated so that the sheets of paper are passed to the conveyor at the properly timed intervals.

The machine I0 comprises a framework 22 made up of suitablestructural steel shapes and plates and designed to provide supports for the various mechanical components.

The focal center of the machine is a continuously rotating mandrel 23, about which the paper strips 35 are wound, one at a time, to form the paper bands; and immediately associated with said mandrel are: a mechanism 24 for applying adhesive to the leading margin of each paper strip, and printing mechanism 25 which automatically imprints a lot number and color or other desirable information on each band. Also associated with the mandrel 23 is means for automatically ejecting the completed bands therefrom.

The conveyor 2D comprises a suitable frame 2B which is pivotally connected at 28 to the feeder I2 and includes

rollers

39, 3l and 32 around which passes a multiple strand belt 33. Said belt is continuously driven in the direction indicated by an arrow on Fig. 1 and it serves to convey the strips of paper from the feeder to a spoutlike guide element having convergent top and bottom walls, as clearly shown in Figs. 2, 6 and 8. A pair of elongate spring fingers 31 overlie and extend approximately parallel to the belt 33 and are anchored at points remote from guide ele-l ment 35; and the free ends of said spring fingers are effective to bear down lightly on the paper strips as they enter the guide element 36 and thus serve to hold the paper flat against the belt at the discharge end thereof so that it will be positively propelled through the guide element 36 at the proper instant.

At the discharge end of the guide element 36 there is located a stationary stop plate 38, the lower end portion of which is so positioned that it normally serves to obstruct discharge of the paper strips-the object being to time the discharge of each strip so that it will engage the winding mandrel at the pro-per instant, The stop plate 33 is carried by a support 39 which, in turn, is attached to the frame of the machine; and said plate is adjustable vertically by means of an adjusting screw 49. The adjustments thus capable of being effected makes it possible easily todelay or advance release of the paper strips from the guide element 35, as will presently be apparent.

The frame 26 of conveyor 2!! is rigidly connected to a pair of parallel arms 42, each of which is aiiixed at one end to an elbow fitting 43, individually. Said fittings '43 are interconnected by a crossbar 44, Figs. 4 and 5, which carries a T-tting 45, to which is connected, Fig. 6,

a link 4G, the lower end of which is threaded to a clevis 48 secured against free rotation by a 4 knurled lock nut 49. The clevis 4B is bifurcated to receive a roller 50 which is rotatable on a pin 5I to which is pivotally connected the upper end of a link 52 fulcrumed at 53. The two

links

46 and 52, conjointly, form a toggle, with the roller 53 located at the knee thereof.

As most clearly shown in Fig. 6, a slide 56 mounted for lengthwise horizontal reciprocation bears at one end against the roller 5I! and is provided at its other end with a roller 51 which engages the periphery of a cam 58 carried by and rotatable with a camshaft 59. As will be apparent from inspection 0f Fig. 6, the action of cam 58 through slide 56 on roller 50 is such as to cause the toggle, comprising

links

46 and 52, to alternate between the two limiting postures illustrated respectively in Figs. 2 and 6. The arms 42 are thus alternately raised and lowered, thereby lifting and lowering the free end of conveyor 20 and the guide element 36 which is supported by the conveyor frame. In Fig. 6 the arms 42 are in elevated posture, and the discharge end of guide element 35 is consequently obstructed by the stop plate 38. Rotation of cam 58 to the angular posture in which it is shown in Fig. 2 results in a withdrawal of lateral support from the knee of the toggle, thereby enabling the toggle to give way and permit the arms 42 to descend under gravity sufficiently to effect displacement of the discharge end of guide element 36 from the position in which it is shown in Fig. 6, relative to stop plate 38, to the alternate open position in which it is shown in Fig. 2. The timing of the feed mechanism is such that there is in each instance a strip of paper 35 within the guide element 36 ready to be discharged immediately prior to each alternate opening of the discharge end thereof, provided the stack I4 has not become exhausted, and further provided the feed mechanism and conveyor are operating properly. The reason for feeding the strips of paper into the guide element 36 at a rate of one strip per each alternate opening instead of one strip per opening will be explained later.

A rubber pressure roller 50 journaled in the lower ends of two parallel supporting arms EI, adjustably connected to a bracket 62, bridged across the arms 42 and carried thereby, is disposed adjacent the periphery of mandrel 23 and.

movable with the arms 42 toward and away from said mandrel. The alternate positions of said roller 60 are depicted in Figs. 6 and 7 respectively; and as will be self-evident from the latter the function of the roller is to press the strip of paper 35 against the peripheral surface of the mandrel.

The mandrel 23 is provided with two closely spaced rows of peripheral openings {i4-,see Figs. 13 and l-extending axiswise of the mandrel. and said openings communicate through the interior of the mandrel and its supporting spindle with a vacuum pump, through a valve which functions automatically to apply and release the vacuum at the appropriate intervals.

Assuming the presence of a strip of paper within the guide element 36, it will be apparent that as the arms 42 are lowered from the posture of Fig. 6, the roller 6I! and the guide element 36 will descend to assume the positions in which they are shown in Figs. 2 and 7. The paper strip 35 is thus freed from the obstruction or stop plate 38 and is immediately propelled by the conveyor belt against the roller 60, the rotation of which Ycauses the leading edge of the strip to be deected downwardly into the bite between said roller 60 and the peripheral surface of the mandrel. The timing is such that the peripheral openings 64 arrive at a position coinciding with the leading margin of the paper strip, as clearly shown in Fig. 7, and the vacuum is thereupon applied so that the said leading margin of the strip is held firmly against the mandrel, while the latter continues to rotate in the counterclockwise direction. The vacuum is maintained so as to retain the paper strip on the mandrel throughout a complete revolution, after which the vacuum is released for an instant while the band is being ejected from the mandrel.

When the paper strip 35 has partially encircled the mandrelsee Fig. 9--a liquid adhesive is applied to the external leading marginal surface thereof by the adhesive-applying mechanism 24, and the adhesive so applied, although quick setting, remains sufficiently agglutinant so that When the trailing edge of the strip is pressed by the roller 60 against the adhesive-coated marginal surface the two ends of the band are firmly joined. Thereupon the roller 6l] is lifted out of contact with the completed band and an ejector mechanism, to be described later, kicks the band off the mandrel into a receptacle, not shown, provided for the purpose.

ItY will readily be understood from a consideration of Fig. 15, which shows the conditions obtaining immediately prior to the completion of a band, that it is not practicable to feed another paper strip to the mandrel concurrently with the completion of each band because by the time a completed band has been ejected the openings 84 will have passed beyond the point of possible registration with the leading margin of the next paper strip; and it would involve much complication to provide additional rows of vacuum openings, angularly displaced from openings 84, for the reason that no adequate suction could be created at one group of openings while the other group remained uncovered unless a relatively intricate valve arrangement were provided for controlling the vacuum to each group individually. And even if the necessary additional valves and valve-actuating mechanism were not enough to render unfeasible the provision of a second group of openings closely following the existing group, there are still other factors which contribute additionally to the undesirability of so doing. It is for that reason that the paper feed mechanism is timed to feed one strip of paper to the conveyor for each two revolutions of the mandrel. By the time rthe group of openings 64 has completed another revolution, following ejection ofA a completed band, and has again arrived at the angular position illustrated in Fig. '7, a succeeding vstrip of paper 35 is delivered to the bite between roller 60 and mandrel 23, and the formation of another band is thus initiated.

The band-winding mandrel The construction of the mandrel 23 and its spindle 66 together with the spindle bearings and the vacuum-control valve and valve-actuating mechanism is most fully illustrated in Fig. 13; and the vband-ejecting mechanism is also shown in part in, that figure and in part in Fig. 19. It will be observed that the spindle 66 is mounted for rotation in ball-bearings 61 which, in turn, are mounted in a bearing block B8 secured to a plate |81 which is supported by the frame 22. A stub shaft 69 is pressed into one end of spindle 66 and carries two chain sprockets 6 10 and 1I, the latter of which is driven by a chain 12, Fig. 4, from a sprocket 13 on the camshaft 59. The sprocket 10 serves as a driving sprocket for the printing mechanism, which is to be described later.

The spindle 66 has an axial bore 14 connected with the group of openings 64 and in communication through openings 15 with ports 16 and 18 in the bearing block 68. Annular` seals 19 are provided at the two ends of bearing block 68 to render the interior thereof vacuum tight. A vacuum control valve 89 is attached to the bearing block 68 and has ports 8i and 82 in registra/- tion with the ports 16 and 18 respectively. A valve slide 84 is mounted within the body of valve B!) and is reciprocable lengthwise. Said slide has two ports 85 and 86, the former of which registers with the port 8l when the slide is in that one of its two limiting positions in which it is shown, while the latter registers with port 82 when the slide is in its alternate limiting position. The threaded opening 81 is connected to a pipe 88 which, as shown in Fig. 20, connects with a vacuum pump 39. The slide 84 is biased by a spring 98 toward the position in which it is shown in Fig. 13, wherein the ports 8l and 85 are in registration. It will be evident that vacuum is applied to the bore 14 of spindle 66 and thus to Athe openings 64 when the valve slide 84 is in its normal position as per Fig. 13. To the end of valve slide 84 remote from spring 90 there is connected the plunger Vof a solenoid 92 which when energized moves the slide to its alternate position wherein the port 86 registers with port 82 and the port 85 is out of registration with port 8l. The threaded opening 93 may communicate directly with the ambient atmosphere or, if it is desired to suppress the noise of recurrently inrushing air said opening may be connected to a pipe extending to the exterior of the building or to a noise-suppressing muiiier.

The winding of solenoid 92 is connected in circuit with a normally open switch 94-see Fig. 4- which is adapted to be closed momentarily by a cam 95 on camshaft 59, once per revolution of said camshaft. Since the mandrel 23 and its spindle 66 are driven from camshaft 59 through chain 12 at twice the speed of the camshaft, this is equivalent to saying that solenoid 92 is energized momentarily once every other revolution of mandrel 23. The energization occurs upon completion of each band.

The mandrel 23 preferably is removable from spindle 66, as will be clear from inspection of Fig. 23. It is held on the spindle by a knurled nut 63 and located rotationally by means of a key. Mandrels of various diameters may be provided and interchanged to condition the machine for the making of bands of diverse sizes. However, if mandrels of different diameters are interchanged it obviously is necessary to provide for corresponding radial adjustments of the ejector fingers 98. This can be accomplished by moving the ejector ngers outwardly or inwardly along the face of the sleeve |00 or by providing a variety of sleeves with ejector fingers located at variant radial distances from the axis of rotation.

The band ejector The mechanism for ejecting the finished bands from the mandrel 23 comprises three ejector fingers 98 equally spaced about the mandrel and arranged to slide in grooves 99 milled in the periphery thereof and extending axiswise of the one end to a sleeve |00 which is slidable on the' spindle 65 and rotatable therewith. In Fig. 13 said sleeve and iingers do not overlap the mandrel sufficiently to interfere with the band-winding operation. The sleeve |55 has an integral annularly grooved collar |871 which is engaged by a forked shifter arm |82 secured to and movable with a piston rod |03, Fig. 19, extending into a pressure cylinder |54 and connected therein to a piston |55. Compressed air is admissible to the cylinder chamber 151 through a port, not shown, passing through the cylinder head |55, and is alternately admissible to the cylinder chamber |58 through a port H5. Normally the chamber |51 is under air pressure, as a result of which the fingers 98 are retracted as per Fig. 13. But at the instant when a iinished band is to be ejected from the mandrel the pressure is released from chamber 51 and compressed air admitted to chamber |538 through port H5. The fingers 98 are consequently moved abruptly to eject the nished band; and the air control valve acts immediately thereafter to restore pressure to chamber |51 and release the pressure from chamber |88. The iingers accordingly move forward and back in quick succession. Control of the inflow and discharge of air to and from cylinder chambers |51 and |58 is eiected by a valve H2 which is best shown in Fig. 1'?, but also visible in Fig. 4. Said valve includes a` plunger-type valve stem i3, Fig. 17, arranged for actuation by a walking beam ||4 one end ci which is pivotally connected to a vertical valve rod H Jthe lower end of which vis pivotally connected to a second walking beam H5 fulcrumed at ||1 on a bracket lil. The free end of the walking beam |5 carries a cam follower in the form of a roller in apposition to a cam |32I, Figs. 5 and 17, mounted on and rotatable with the camshaft 55. It will be seen that once per revolution of camshaft 59 the valve stem |13 is momentarily depressed by cam |2| operating through the two walking beams H4 and H5 and the valve rod H5; andit will be apparent from the conguration of cam |2| that the interval of actuation of the ejector ngers 98 corresponds to but a very small part of `a complete cycle. Compressed is-supplied to valve H2 through a pipe |22, Fig. 1'?, which extends to a compressed air supply tank, not shown lin the drawings.

The adhesive applying mechanism The adhesive-applying mechanism 2li is detailed principally in Figs. 8-12 inclusive and cornprises a roller applicator |25 carried by a pair of arms 125 and l2? which are ulcrumed at |28. A plate 25 bridged across said `arms affords an abutment for a spring i3d which is mounted on a stem iti and bears at its lower end against a shoulder formed on Ysaid stem. The upper end of the stem |3| extends through an aperture in plate 25 and is threaded to Vreceive a knurled retainer nut |32. The lower end of stem |3I is pivotally connected at |33 to an actuating arm |543 fulcrumed at |35 to a bracket |35. Said arm |3f-is provided with a hardened steel spheroidal tip |31 which is seated in a circular opening |35 in a vertically reciprocable slide |35 mounted in a suitable guide |55. The slide |39 is disposed immediately adjacent a lifter cam 52 mounted on and rotatable with camshaft 53, and said cam hasl a radially projecting tooth |52a which is eiective during each revolution of camshaft 59 to `engage a shoulder i356; on slide LES-see Fig. `12u-and abruptly lift and then release the slide,

The result of this actionis to lift the arm |34,-

The abrupt upward movement of roller |25 causes it to effect momentary contact with the strip of paper on mandrel 23 and the timing is so adjusted that the contact is made with the leading marginal surface of the strip, applying adhesive thereto.

Obviously, it would not be permissible to allow adhesive to come into contact with the surface of the mandrel; but in the absence of the preventative provision about to be described the adhesive applicator |25 would make contact with the mandrel should there be any interruption of the now of paper strips while the machine remains in operation. The provision referred to comprises a latch bar |41 pivotally anchored at |48 and having a hook |52 at its upper end which isl i adapted to pass through a slot |50 in a bridge member |52 interconnecting the two arms |26 and $21. When the latch bar H11 is postured as shown in full lines in Fig. 11 it is operative to prevent the arms |26 and |21 Vrising sufficiently to enable roller |25 to make contact with the mandrel; but when, on the other hand, said latch bar is postured as shown in dot-dash outline in the same `fig-ure, it interposes no obstruction to the upward movement of arms |26 and |21, as wil1 be apparent. When the latch bar is in its effective full-line position the actuating arm |35 is still free to rise 'because of the compressibility of spring |30.

A piston rod |53 having one end pivotally connected at |511 to the latch bar |41 is attached at its other end to a piston |55 which is reciprocable in a cylinder |55 having a chamber '|51 which is connected through a branch pipe |58 to the pipe 88, Fig. 20, communicating with Vthe vacuum pump 89. Whenever the openings 64 in the mandrel 23 are obstructed by reason of a strip of paper on the mandrel a suiciently reduced pressure obtains in chamber |51 so that the atmospheric pressure in chamber |59 will move piston |55 against the opposition of spring |65 and thus shift the 'latch bar |41 to the posture in which it is shown in dot-dash outline, wherein it is ineffective. But whenever the openings 64 are not covered by a paper strip there is insuiiicient pressure reduction in chamber |51 to oiset spring |55 and, accordingly, the latch bar |41 remains in or `assumes its full-line posture, Fig. ll, wherein the hook |43 is positioned to obstruct full upward movement of roller |25. Thus, it will be seen that the adhesive-applying roller |25 can never make direct contact with the peripheral surface of mandrel 23.

The printing mechanism The printing mechanism 25 and the drive therefore are most clearly illustrated in Figs. 3, 5, 14, 15, 17 and 18 to which attention is now directed. A continuously rotating cylindrical type carrier I 64 is provided with peripheral dovetail grooves extending lengthwise thereof to receive strips of type |55 the faces of which are brought into contact with each paper strip 35 as it is being ywound on the mandrel 2 3. At the rear of type carrier |64 is located .an ink roller |66 positioned to contact the type faces during each revolution of the type carrier. The type carrier |64 and ink roller |66 are rotatably mounted on shafts |61 and |68 respectively, the former of which is journaled at one end in la slide |69 of inverted T cross-section, Fig. 5, mounted for lengthwise reciprocation between two complementary guide strips mounted on a bed casting |12 which, in turn, is supported by channel members |13 constituting component parts of the machine frame. The stud shaft |68 supporting ink roller |66 is secured at one end to a secondary slide |14 which is ,attached to slide |69 by means of guide strips |15 which permit movement of slide |14 lengthwise of slide |69, thus enabling ink roller |66 to be moved bodily toward and away from type carrier |64. A feed screw |16 swivel-connected to slide |14 passes through an opening in an anchor block |11 attached to slide |69 and is provided with a knurled adjusting nut |18.`A compression spring |80 encircling the feedscrew |16 bears at one end against anchor block |11A and at its other end against slide |14. Manual rotation of nut |18 is effective to move ink roller |66 toward and away from type carrier l 64, thus providing for adjustment of the pressure with which the ink roller bears against the faces of `type strips |65.

It is necessary to reciprocate the slide |69 in a manner to cause the type carrier |64 to move toward and away from mandrel 23 at appropriate uniform intervals; and it is further necessary to rot-ate the type carrier in timed relation with the mandrel so that the type will contact the paper strips on the mandrel at the correct instants. Consequently, there must be provided a drive means for rotating the type carrier |64 4which will permit of relative lateral movement between the type carrier and the mandrel and at the same time maintain a' constant rotational relationship therebetween so that the type will in each instance register with the specific surface areas of the paper band on which the printed matter is intended to be impressed. The arrangement by which the type carrier is rotated synchronously with the winding mandrel is illustrated most fully in Fig. 17 and comprises a chain belt |82 which passes around two idler sprockets |19 and |80 and engages sprocket 10 onstub shafts 69- shaft |68, which latter is journaled in slide |69 and extends across the machine to an extent suicient to enable sprocket |8| to be placed in alignment with sprockets 10, |19 and |88. The outboard end of shaft |61, Figs. 3 and 5, is journaled in a bearing block |83 supported by an arm |84, which bearing block is cast integrally with a slide member |85 designed to slidably engage a guide strip |86 secured to the under side of a hori- Zontal plate |-81 constituting a, component part of the machine framework. The arm |84 is affixed at one end to the slide |69 and moves bodily therewith, the outboard end being slidably supported by the guide strip |86. The idler sprocket |19 is rotatably mounted on a bracket |88 attached to the machine frame; and the sprocket |80 is rotatably supported .on a stud shaft |90 projecting from and carried by a block |9| which is slidably mounted in an inclined guideway |92 and attached to a stud |93 which passes through an aperture in an anchor plate |94 carried by a bracket |95 and is threaded at y its outer end to receive a knurled kadjusting nut |96 between which and the anchor plate |94 there is interposed a compression spring |98. The chain belt |82 is driven by sprocket 10, the posi- 10 tion of which is xed, asis that of idler sprocket |19. But sprocket |8| moves with slide |69 and at the same time sprocket |80 moves together with its supporting stud shaft |90 and carrier block |9| lengthwise of the guideway |92. It will be apparent that as slide |69 recedes from the winding mandrel 23, sprocket |80 is pulled downwardly along the guideway |92 against the opposition of spring |98, and that said sprocket |80 is urged upwardly by said spring as slide |69 moves toward the mandrel. Although the speed of rotation of type carrier |64 is caused to deviate from constancy as a result of the reciprocatory movement of slide |69, this does not give rise to any variation in the angular relationship between the type carrier and mandrel as respects the recurrent instances when the type makes contact -with the successive paper strips on the mandrel and, consequently, registration of the type faces with the areas on the paper strips intended to receive the impressions is not adversely affected.

'l'he slide |69 and all parts carried thereby are biased toward the mandrel 23 by a compression spring |99 which is interposed between the rear end of the slide and an angle iron abutment 200 secured to the frame of the machine. Retraction of slide |69 is effected by a cam 20| carried by and rotatable with camshaft 59, adjacent which cam is a rotary cam follower 202 attached to one end of a cam follower rod 203 which is reciprocable lengthwise in a tubular guide 204 secured to the frame of the machine. The left hand end of rod 203 bears against a roller 206 carried by and connected to the lower end of a rocker member 208 which is fulcrumed at 209 on an arm 2|0 depending from and movable with slide |69. The upper end of rocker member 208 is pivoted at 2|2 to a clevis 2|8 to which is affixed a rod 2 I4 which extends through an opening in a plate 2|5 and is threaded to receive a knurled nut 2|'6. The plate 2|5 is secured to the rear end of slide |69 and movable therewith. The rocker member 208 serves to transmit to the slide |69 the movement in one direction of rod 203 in response to cam 20|, the return of said rod, together with the slide, being effected by spring |99. As shown in Fig. 14, the slide V|69 is in its forward-most'position wherein the face of one of the type stripsV |65 is in contact with a paper band 35 on the mandrel 23. It is necessary to be able to adjust the contact pressure between the type and the paper strips to offset slight variations which may occur from time to time, and such adjustments are effected by means of the knurled nut 2|6. It will be seen that the cam 20| functions as a stop to limit the forward travel of slide |69, and it will be apparent that by rotating nut 2 I6 in one direction or the other the relative position of the slide can be altered independently of the cam. The length of travel of the slide is unchanged but its limiting positions are altered. The same result might be accomplished by adjustably moving the type carrier relatively to the slide, but to do so would involve moving both ends of shaft |61 in order to maintain alignment and that would not be nearly as convenient as the arrangement described. It also is necessary to make a similar adjustment whenever there may be substituted a mandrel 23 of different diameter.

It will be observed that all the ve cams heretofore identied are mounted on and rotatable with the common camshaft 59, which is journaled in four pillow blocks 2 I1 secured to the frame of the machine.

- the

speed reducer

2,2! through gears 228 and 229. The latter gear is mounted on and rotatable with the speed-reducer take-olf shaft 230 on which is also mounted a sprocket 232 which is connected with a sprocket 233 on camshaft 59 through a chain belt 234.

V The drum VU33 is continuously rotated by a chain belt 235, Fig. 1, which runs over an idler sprocket 236 and a driving sprocket 231 mounted on camshaft 59 and rotatable therewithsee Fig. 4. n 4 Y Itis found that setting of the adhesive coating on the paper bands can be hastened by blowing hot air onto the adhesive-coated surface just before the two ends are overlapped; and to that end there may be provided a hot air supply pipe 238, Fig. 2, to which is connected a suitable blast nozzle 239. The pipe 238 may be supported by a block 2de attached to the guide element 36 and is preferably connected to the hot air supply line through a flexible hose, not shown.

While I have illustrated and described only one embodiment of my invention, it will be manifest that numerous modifications and alternatives are included within the scope and purview thereof and accordingly, I do not wish to be limited otherwise than as clearly indicated by the terms of the appended claims;

What is claimed is:

1. The combination in a band vforming machine, of a rotary spindle, a mandrel carried by said spindle and rotatable therewith, said mandrel having a peripheral opening communicating with a vacuum pump by way of a passageway through said spindle, a pressure roller adjacent said mandrel and movable bodily toward and away from said mandrel, said pressure roller and mandrel being operative conjointly to grip a strip of paper, the arrangement being such that a strip i of paper fed to said mandrel is adhered thereto 'at its leading edge portion by external atmospheric pressure-resulting from a partial vacuum within said passageway, the adherence of the paper to the mandrel being suicient to cause the paper strip to be wound around the mandrel, an adhesive applicator operative to apply a coating of adhesive to the external leading marginal surface of the paper strip during passage of same around the mandrel, means operative in timed relation with the rotation of the mandrel to move said pressure roller into Contact with the paper strip on the mandrel and to maintain said contact while the paper strip is being wound on the mandrel, said pressure roller being operative in conjunction with said mandrel to press together the two ends of the paper strip whereby to effect firm adherence therebetween, said lastmentioned means being further operative to withdraw said roller from contact with the paper strip following completion of the band, one or more ejector elements movable axiswise of said mandrel and operative when moved in one direction to engage one end of the paper band and eject the same from the mandrel, means operative in timed relation with said mandrel to actuate said ejector element following completion of each band, and further operative to retract said ejector element following each actuation Ythereof in the direction to eject a band, a mechanicaln andrei 12 c feeder synchronized with said mandrel and operative to feed strips o`f paper to said mandrel one at a time at the rate of one strip for every two revolutions of the mandrel, a continuous conveyor interposed between said feeder and said mandrel for transferring the strips of paper from the feeder to the mandrel, a gateI normally obstructing the discharge end of said conveyor for delaying delivery of paper strips to said mandrel, and mechanism operative in timed relation with said mandrel for opening said gate at predetermined intervals so spaced apart and so interrelated with the movements of saidyejector elements and said mandrel that each strip of paper is released to said mandrel after the mandrel has been cleared of a previously finished band and concurrently with the arrival of said peripheral opening at a position to effect registration with the leading edge portion of the strip.

2. The combination according to claim i, comprising adhesive-applicator means including an applicator element, means supporting said element for movement toward and away from said mandrel, a cam operative in timed relation with said mandrel for urging said element into momentary contact with the external leading marginal surface o-f a paper strip on said mandrel while said mandrel and the paper strip thereon continue to rotate, yieldable means inter-coupling said cam with said element supporting means and effective to enable said adhesive applicator means to be restrained against movement into contact with said mandrel, latch means operative in one position to obstruct said adhesiveapplicator means against movement into contact with said mandrel, and vacuum-actuated means operative to move said latch means to an ineffective position in response to a predetermined degree of applied vacuum, said Yvacuum-actuated means being connected to the saine vacuum-producing source as said peripheral opening, the arrangement being such that said latch means is moved to its ineffective position by said vacuumactuated means when and only when said peripheral opening is obstructed', as by a paper strip embracing said mandrel. Y

3. The combination in a band-forming machine, of a camshaft, a motor for Continuously rotating said camshaft, a spindle driven from said camshaft at twice the angular speed thereof, a feeder mechanism operative to feed pre-cut paper strips to said conveyor one at a time at the rate of one strip for Ievery two revolutions of said spindle, a mandrel carried by and rotatable with said spindle, said mandrel having a row of peripheral openings extending axiswise thereof, said openings being 'connected through said spindle to a source of vacuum, a valve for controlling application'of vacuum to said openings, al belt conveyor for transferring paper strips from said feeder mechanism to said mandrel `and having' its discharge end situated adjacent said mandrel, mechanism for and lowering the discharge end of lsaid conveyor, a stationary gate positioned to obstruct the discharge end of said conveyor when lsaid discharge end is in elevated position, said discharge end being unobstructed when in its lowereddposition, a cam rotatable with said camshaft and operative to actuate said mechanism invtimed relation with said mandrel, the arrangementbeing such that said row of openings eifects lregistrationwith the leading marginalsurface of eachwpaper strip as the paper Sirieis .released from Seidl, @leyeron ,and a Second cam rotatable with said camshaft and opera- 13 tive to control said valve in timed relation with said mandrel whereby to cut off the vacuum to said openings upon completion of each band and to restore the Vacuum thereto prior to the commencement of a successive band-forming operation.

4. A band-forming machine in accordance with claim 3 including a pressure roller mounted adjacent said mandrel and operable by said mechanism to effect intermittent osculatory contact with a strip of paper on said mandrel in timed relation with the rotation of the mandrel, means operative to apply adhesive `to the leading marginal surface of each paper strip as the strip is being wound around the mandrel, and a cam vrotatable with said camshaft and operative to actuate said adhesive-applying means in timed relation with said mandrel.

5. A band-forming machine in accordance with claim 3 including mechanism for printing upon the paper strip while it is being wound on the mandrel, said printing mechanism compris- 14 ing a reciprocable slide, a cam rotatable with said camshaft for reciprocating said slide toward and away from said mandrel, and a rotary type carrier movable with said slide toward and away from said mandrel.

' STANLEY E. TRIBBEY.

REFERENCES CTED The following references are of record in the file of this patent:

UNITED STATES PATENTS