US1642340A - Machine for placing, pressing, and drying end caps on paper rolls - Google Patents

Description

t 1,642,340 Sept- 1927" w. LJuNGsTRO MACHINE FOR PLACING, .PRESSING, AND DRYING END CAPS ON PAPER ROLLS Filed Nov. 21. 1925 9 Sheets-Sheet l W W M.

1,642,340 Sfipt- 13, w TRQCjM MACHINE FOR PLACING, PRESSING, AND'DRYING END CAPS ON PAPER ROLLS Filed Nov. 21. 1925 a sheets-sheet 2 a F1gl. 3

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w. LJUNGSTRCM MACHINE FOR PLACIfiG, PRESSING, AND DRYING END CAPS ON PAPER ROLLS Filed Nov. 21, 1925 9 Sheets-Sheet 4 Fig l Z i z llllllllllll Wrrmusr 1,642,340 Sept 1927' w. LJUNGSTROM MACHINE FOR PLACING, PRESSING, AND DRYING END CAPS 0N PAPER ROLLS Filed Nov. 21, 1925 9 Sheets-Sheet 5 IEHIJI W. LJUNGSTROM MACHINE FOR PLACING, PRESSING, AND DRYING END CAPS ON PAPER ROLLS Filed Nov. 21. 1925 9 Sheets-Sheet 6 M r/rssrs s W WWW Sept. 13, 1927. 1,642,340

w. LJUNGSTROM MACHINE FOR PLACING,'PRESSING, AND DRYING END CAPS ON PAPER RQLL S 4 Filed Nov. 21. 1925 9 Sheets-Sheet 8 Sept- 1 3,

, msssliiifi MACHINE FOR PLACING AND DRYING END CAPS ON PAPER ROLLS 9 Sheets-Sheet, 9

Fil afi Nov. 21, 1925 Patented Sept. 13, 1927.

UNITED STATES 1P AT NT. o F'FlcEf WALFRID LJUNosTRoM, F Mart ans, swnnEN.

MACHINE FOB PLACING, PRESSING, ANDDRYING END cArs on PAPER ROLLS.

Application filed November 21, 1925, Serial No. 70,644, and in SwedenOctober 2, 1924.

In packing the paper rolls obtained in the manufacture of paper, the ends of each roll are covered with caps of millboard or strong paper, jute or the like.

5 of these caps is partly to protect the ends of the roll and partly to secure the ends of the paper wrapping that are bent over the edges of the roll. The caps are coated with an adhesive and, up to the present, they have been pressed against the ends of the roll by hand or by two relatively movable press heads. Hand labour, however, is expensive, and in many cases does not turn out very good work while the mechanical means is in many ways objectionable. The present invention provides a machine for pressing and drying such end caps used in packing paper rolls, by which the work can be done quickly and efficiently. The machine is chiefly characterized by two press heads (heated b steam, electricity or the like) one of whic is stationary, whereas the other is arranged in such manner that it can be brought, by means of a screw or other one, for the purpose of pressing caps which have been placed on the ends of a paper roll, said roll being located on a support, so mounted that it is free to move in the same direction as the movable press head to equalize the pressure exerted by the two heads.

In order that the invention may be clearly understood, it will now be described with reference to the accompanying drawings,

whereon Figures 1 and 1 together constitute a plan Figs. 6 and 7 show the starting and stop ping mechanism drawn to an enlarged sca Fig. 6 being a plan view and Fig.7 a section on line VII-VII in Fig.6.

Figures 8 and 9 show, partly in section, another construction of the press heads;

Figure 10 shows, in sectional elevation, a third form of the press heads, and Figure 11 is an end view of one of said heads;

The object mechanical device, towards the stationary- Figure 12 is 'an end elevation of one end of a paper roll, with the paper wrapping partly bent over; g

Figures 13 and 14 show respectively a sectional elevation and an end view of an auxiliary device to facilitate placing the afore said caps on the ends of the paper roll;

Figures 15 and 16 show a fourth form of the press heads; and

Figures 17 and 18 show a fifth form of the press heads; I

In the drawings the references 1 and 2 denote the two press heads each of which, in the embodimnt illustrated by Figures 1to 3, is made hollow and provided with a steam inlet 3 and with an outlet 4 for condensed water. The press head 1 is attached to a stat onary standard 5,-by means of a central balljoint bracket, to enable the head to adapt itself to the end surface of the roll during the pressing process. The press head 2 is movable and is connected, by means of a ball joint, with a screw 6. This is mounted in a frame 7 supported on wheels 8, 9, so that the whole forms a carriage which can be moved to and fro on rails 10 to facilitate the placing of the press head 2 at a convenient distance from the press head 1 corresponding approximately. to the length of the paper roll that is to be packed. In order to fix the carriage in position on the rails when it has been set at the proper distance, it is provided with a brake 11. In addition, screws 12 (Figs. 2 and 2),'can be caused to engage with the rail so as to lock the carriage in place;

The screw 6 is arranged to be driven by means of an electric motor 13 mounted on the frame 7 and actuating through pinion gearing 14, 15, a reversible double belt drive 16, 17 and pinion gearing 18, 19. The pinion 19 is mounted in two bearing pedestals 20, 21 and the hub of the pinion is provided with, or shaped as, a nut engaged by the screw 6 which is thereby displaced axially in one or the other direction according'to the direction of rotation of the pinion, with a consequential displacement of the press head 2. To enable the drive to be reversed without changing the direction of rotation of the driving motor, the belt 16 is uncrossed, whereas the belt 17 is crossed. When the machine is not in operation, the belt 16 runs on an idle pulley 22 while the belt 17 runs on an idle pulley 23 both mounted on the engagement with a slot 29 in the belt-fork sup ort and is thereby locked.

T e construction and operation of the han- Idles 26 and 27 will be more particularly described hereinafter with reference to Figs. 6 and 7 To enable the transmission of power to the screw to be stopped automatically at a predetermined position, a wheel 31, provided with a release cam 30, is arranged opposite the slot 29. j

shaft 39 by means of pinion gearing 32, 33

This wheel is rotated from the and 34, 35, and a belt 38 running on stepped pulleys 36, 37. 2 At each revolution of the wheel 31 the cam thereon operates a member (Figs. 6 and 7) on the frame 90 thereby forcing the engaged handle out of the slot 29 so that it may spring back into neutral position, the belt 16 or 17, whichever is in action at the time, being thereby moved .on to its idle pulley at the same time. Ohviously, the timing of the operation of the member 40 can be adjusted by altering the position of the belt 38 on the stepped pulleys.

Between the press heads 1 and 2 is ar. ranged a truck 41, running on rails and intended to support the paper roll in the course of packing. The truck is mounted on wheels 41 so as to be freely movable in the same direction as the movable press head, to equalize the pressure eXerted on the roll by the two press heads. For the purpose of lifting the finished roll off the truck 41, the latter is provided with a lever 42.

The machine works in the following manner.

First the carriage supporting the press head 2 is adjusted and clamped on the rails in a position corresponding to the length of the paper roll to be packed, the screw 6 and press head 2 being at this time in posi tion towards the right in Figures 1 and 2. The paper wrapping, which has previously been placed round the paper roll and pro jects a short distance beyond the edges of same, is turned over at the edges by hand (Figure 12), and the roll is then run on to the truck 41 between the press heads 1 and 2. Paper or millboard end caps, previously coated with a suitable adhesive, are next inserted between the ends of the roll and the press heads 1 and 2, and pressed firmly against the ends of the roll in any suitable manner, as by hand, so as to rest attached to the bent-over edges of the paper wrapping. This having been done, the'belt 16 is manually moved into working position on which itexerts the pressure required to fix the end caps, the release cam 30 acts on the stop- 40, which forces the handle 26 out of the slot 29 and automatically returns the belt 16 on to its idle pulley The movement of the'screw 6 is thus stopped, but the paper roll is allowed to remain in this position, gripped between the heated press heads, for about half a minute to complete the packing process. Thereafter the handle 27 manually moved over to engage in the slot thus moving the crossed belt 17 on to the fixed pulley-28 and causing the pinion 19 to turn in the reverse directign, bringing the screw 6 and press head 2 back into their original positions. Hereupon, the drive is again auton'iatically stopped, the handle 27 being forced out of the slot 29 by the release cam 30 when the wheel 31 has completed a turn in the reverse direction; Finally the packed paper roll is taken off the truck 41 by means of the lever 42, and the machine is ready to deal with another roll.

The pressheads 1. and 2 again form the chief parts of the embodiment of the machine shownin Figures 4 and 5. As before,

the press head 1 ismounted on the standard 5 by means of a ball-joint bracket while the movable press head 2 is connected, by means of a ball joint, with the screw 6 mounted in the frame 7, this frame being supported on wheels 8, 9, thereby forming a carriage adapted to run on the rails 10. In contrast to.the embodiment according to Figures 1 to 3 the carriage is not provided with a braking device, but is free to travel to and fro along the rails 10 during the operation of the machine. r

The starting and stopping mechanism which is similar to that described with refercnce to 1-3 is clearly shown in Figs. 6 and '2'.

Belt forks 24 and mounted on rods 96 and 9? respectively, are provided for shifting the belts, said rods being slidable in the frame 90. The rods are connected by brackets 98"and 99 with handles 26 and 27 respectively, by which one or other of the belts can beshifted into its working position on a pulley '28 fast on the shaft'39. The

handles 26 and 2? are fixed at their lower ends and are resilient so that they can be bent or flexed in two directions at right angles to each other. These handles are so fixedthat normally theyoecupy the position shown in full lines in Figs. 6 and 7 l1812111- All) after termed the inoperative position) but even in this position. they tend to flex towards the frame 90 and as shown bear against this frame. In this way when either of the handles is moved longitudinally along the frame, which they can do by flexing, into a position opposite the recess 29 in the frame 90 the handle will flex into the said slot and be retained thereby. Thisis termed the operative position of the handle because in-the movement of the handle into the slot one of the belts is moved on to a fast pulley.

A powerful spring 59 (Figs. 4 and 5) coaxial with the screw 6 is provided, this spring acting between the carriage and a strut 107 which bears against a fixed wall or fixed stand 76, said strut having loose spacing pieces 77 of wood or the like for the purpose of adjusting the machine to deal with'paper rolls of different lengths. Moreover this strut is arranged to pass freely into the spring and is provided with an abutment 108 fixed thereon which engages with the end of the spring. On the abutment is mounted a pointer 53 movable over a. fixed scale 54 so thatthe pointer can be set in accordance with the pressure which the press head is to exert upon the paper roll. A lever 51 is provided with a series of holes 52 any one ofwhich can receive a pin to pass therethrough and to engage with the abutment 108 so that the position of the lever relatively to the abutment can be adjusted. The lever 51 projects forwardly and is provided near its forward end with a projecting pivot 110 by which it is connected to the cam-lever 55 rockably mounted on the stub shaft 111 carried by a bracket 112. The cam lever 55 is so mounted that it is free to move axially on the shaft 111 and on the pivot 110 (Fig. 6) in addition to the rocking move-- ment. Moreover the cam lever 55 is also pro- 'vided with a cam or inclined surface 113 which contacts with a camor inclined surface 114 fixed on the bracket 112. The arrangement is such that when the lever 51 is moved the cam lever 55 is rocked and by the action of the cam surfaces 113 and 114 is moved towards the lever 26 so as to force it out of the slot 29.

he machine is operated in the same way as the embodiment according to Figures 1 to 3, by means of an electric motor 13 acting through. pinion gearing 14, 15 and a reversible double-belt drive '16, 17. The belt 16 is straight, and'the belt 17 crossed. hen the machine is put out of operation, the belt 16 runs onthe idle pulley 22 and the belt 17 on the idle pulley 23. The belts 16, 17 are provided with belt forks 24, 25, respectively controlled by handles 26, 27 that are normally constrained to the inoperative po-, sition by springs 56 and 57. Power is transmitted to the screw 6 by way of the pinion gearing 18, 19. By shifting the belts 16, 17

respectively on to the fast pulley 28, a movement in one or other direction is imparted to the screw 6.

The belt forks 24, 25 are controlled in such a way that when the handle 26 is moved into working position in the slot 29, the screw 6 is caused to advance, and pressure is exerted, whereas when the handle 27 is moved into the slot 29, the screw 6 is withdrawn.

, The machine according to Figures 1 to 3 does not operate automatically, and the handles must be manually moved into, operative position. This defect is remedied 1n the embodiment according to Figures 4 and 5,

inasmuch as when the screw 6 exerts pressure against the end covers of the paper roll, the carriage is forced back and the spring is compressed, thus moving the lever 51 and.

causing the cam lever 55 to act as hereinbefore explained to force the handle out of the slot so as to allow it to move back into its original position.

Motion is transmitted from the motor pinion 14 to a pinion 58, the shaft of which carries a worm 59. This worm drives a worm wheel 60, the shaft of which carries a small pinion 61 in mesh with a pinion 62 provided with an adjustable projection 63 which although adjustable in the slot 66 is normally fixed upon its pinion and is moved round in an arcuate path thereby, and in its movement acts on the belt control handle 27 for the purpose of bringing the same into operative position in the slot 29. Another pinion 64, provided with an adjustable projection 65, meshes with the pinion 61. The pro ection coacts with the belt control handle 26 to move the same into operative.

a gradual rearward movement of the carriage and compression of the spring 50. As soon as the required pressure, indicated on the scale 54, is attained, the lever 51 is moved to a position in which it actuates the cam lever 55 to force the spring handle 26 out of the slot 29 which handle then returns to its original position under the influence of the spring 56. This causes the belt 16 to be shifted on to the idle pulley 22, and the movement of the screw 6 ceases. At the same time, however, the projection 63 of the pinion 62 acts on the spring handle 27 and moves it into operative position in the slot 29, thus shifting the belt 17 on to the fast pulley 28 and reversing the movement of the p (of sheet copper for example).

ment of the screw 6 is obtained as with the embodiment according to Figures 1 to 3.

The wheel 31 (which is provided with a release cam 30 and is actuated from the shaft of the belt pulley 28 through pinion gearing 70, 71 and 72, 71-3, and belt gearing 74k, coacts with the handle 27 in such a way that the cam 30 "forces said handle out of the slot 29 when the screw 6 has drawn back far enough to enable a new paper roll to be inserted. This done, the handle 26 is moved back into operative position in the manner already described, nd anew pressing operation is performed, the motor 13 running all the time. Hence, the machine can be run by one man, who has merely to insert and remove the paper rolls and keep in readiness the end caps to be applied to the ends of the rolls.

Figures 8 and 9 represent a modilie-zl term of the press heads, in which 'one or more steam coils 43 is or are provid d in each head and supported therein by radial. webs 91. The mo able head 2 is shown but the stationary head 1 is similar. in this embodiment, the heads may be of lighter construction thanthe heads ot. the machine il- 'lustrated by Figures 1 to 3. comparatively light press heads can also be used. when electric heating resistances are provided therein.

In the embodiment according to Figures 10 and 11, the working faces of the press heads 1 and 2 are each provided with a covering of wire netting i l or a perforated plate Said taces may also be perforated or corrugated. The purpose of such arrangement is to prevent the adhesive-coated end caps from being pressed so tightly against the press heads as to become detached from the paper roll under treatment, when the press heads are moved apart again. This may happen in the event of the end caps having, through an oversight, also been coated with adhesive on the side facing the press heads.

One or both of the press heads may be provided with a stamp 15, as shown in Figiire 11, so as to impress the end caps in any desired way during the pressing operation. These stamps are interchangeable, so that their lettering, (e. g, the name of the maker, or customer, &c.), may be changed as required.

As shown in Figure 10, the journal 98 carrying the movable press head or the journal 92 carrying the fixed press head or both. may bearranged t yield to certain extent, being mounted in bushes 46 containing powerful spiral springs 47.

the aid of two similar auxiliary devices, one of which is illustrated by Figures 13 and 14:, the end caps can be placed on the ends'ot' the paper rolls in a convenient manner outside the machine. Each device consists of a springy ring 48 provided with small lugs 49, and is adapted to receive one of the two loose end caps required for each paper roll to be packed. The rings containing the end capsv are slipped over the ends of the paper roll 94 12) and grip the same by virtue of their elasticity, whereupon the roll can be easily adjusted in the machine and pressed. In order to hold the end caps in the proper position, each ring may be provided with a metal wire netting 50 as shown in Figure 14:. Of course, in such case, the wire netting shown in Figure 10, covering the press heads, can be dispensed with.

According to the embodiment shown in Figures 15 and 16, each press head consists of hollow iron member 78, in which is housed an electric heater 79. A thin plate or steel or other suitable material is pro vided on the side next the paper roll, and is supported by spring bolts 81. so that it can adapt itself to the raised tolds produced by turning over the ends of the wrapping paper. and thus prevent the resulting ridges from being pressed into the roll and damaging the paper.

in the embodiment for the same purpose according to Figures 17 and 18, each press head consists of a hollow member 82 containing); a heating device 83. The side next the paper roll consists of racial segments of spring steel 84:, which ensure an elastic pressure and adaptability to irregularities on the end surfaces of the paper rolls.

Whilst I have described preferred forms of the machine and parts of the same, it will be understood by those skilled in the art that many modifications may be made, and therefore I intend no limitations upon the invention other than are imposed by the scope of the appended claims.

I-Iaving now fully described my invention what I claim and desire to secure by Letters Patent is 1. A machine for use in pressing on the end caps of paper rolls enclosed in paper wrap ing, comprising fixed press head, a movable press head. mechanism for moving said movable --press head towards said fixed press head for the purpose of pressing the end caps on a paper roll placed between said press heads. and an automatic stop motion for arresting the, forward movement of said movable press head.

2. A machine for use in pressing on the end caps of paper rolls enclosed n. paper moving said movable press head towards said fixed press head for the purpose of pressing the end caps on a paper roll placed between said press heads, and an automatic stop'inotion for arresting the forward movement' of said movable press head.

l. A machine for use in pressing onthe end caps of paperv rolls enclosed in paper wrapping, comprising a fixed press head a carriage, a second press head movably mounted on said carriage, and means for automatically moving said movable press head towards and away from said fixed press head for the purpose of operating automatically on paper rolls placed one after another between said pressheads.

5. A machine for pressing and drying the end caps of paper rolls enclosed in paper wrapping, comprising a fixed press head having provision whereby it may be heated, a movable carriage, a second press head movably mounted on saidcarriage and also having provision whereby it may be heated, it screw for moving said movable press head for the purpose of pressing and drying a paper roll with its end caps placed between said press heads, and driving means for said screw.

6. A machine for pressing and drying the end caps of paper rolls enclosed 1n paper wrapping, comprising a fixed press head having provision whereby it may be heated, a movable carriage, a second press head movably mounted on said carriage and also having provision whereby it may be heated, I

a screw for moving said movable press head for the purpose of pressing and drying a paper roll with its end caps placed between said press heads, driving means for said screw, and mechanism operated by said driving means for automatically stopping the forward motion of said screw when a desired degree of pressure has been attained.

7. A machine for placing, pressing and drying the end caps of paper rolls enclosed in paper wrapping, comprising a fixed press head having provision whereby itmay be heated, a movable carriage, a second press head movably mounted on said carriage and also having provision whereby it may be heated, a screw for moving said movable press head for the purpose of pressing and drying a paper roll with its end caps placed between said press heads, driving means for said-screw, and mechanism operated by said driving means, for automatically and repeatedly reversing the motion of-said screw.

8. A machine for use in pressing on the end. caps of paper rolls enclosed'in paper wrapping, comprising a fixed press head, a movable press head mechanism for ac tuating said movable press head for the purpose' of pressing the end caps 'on a paper roll placed between them, a support for the paper roll between said press heads and means fox-"mounting saidsupport sothat it.

is free to move in the same direction as the movable press head, to equalize the pressure exerted on the roll by the two press heads.

9. A machine for use in pressing on the end caps of paper rolls enclosed in aper wrapping, comprising a fixed press ead, a movable press head, mechanism for actuating said movable press head for the.

purpose of pressing the end caps on a paper stop motion for arresting the pressing operation, a support for the paper roll .between said press heads and means for mounting said support so that it is free to move in the same direction as the movable press-head, to equalize the pressure exerted on the roll by the two press heads.

10. A machine for use in pressing on the end caps of paper rolls enclosed in paper wrapping, comprising a fixed press head, a movable press head, means for automatically moving said movable press head towards and away from the fixed press head for the purpose of pressing the end caps on paper rolls placed one after another between said ress heads, a support for the paper rolls etween said press heads and means for mounting said support so that it is free to move in the same direction as the movable press head, to equalize the pressure exerted on the roll by the two press heads.

11. A machine for use in pressing on the end caps of paper rolls enclosed in paper wrapping, comprising a fixed press head, a movable press head, mechanism for actuating said movable press head for the pur-v moval of the paper roll after the pressing operation.

12. A machine for use in pressing on the end caps of paper rolls enclosed in paper wrapping, comprising two relatively movable press heads, mechanism for actuating said press heads for the purpose of pressing the end caps on a paper roll placed between roll placed between them, an automatic them, an automatic stop motion for arresting the pressing operation, a support for the paper roll between said press heads, and means on said support to facilitate the removal of the paper roll after the pressing operation;

13.,A machinefor use in pressing on the end caps of paper rolls enclosed in paper wrapping, comprising a fixed press head, a movable press head, means for automatically moving said movable press head towards and away from the fixed press head for the purpose or pressing the end caps on paper rolls placed oneai'ter anotherbetwee-n them, afsupport for the paper roll between 'saidvpress heads, m eans for mounting said support so that i'tlis tree to move in the same direction as the movable press head, to equalize the pressure exerted on the roll by the two press heads, and means on said support to facilitate the removal of the paper roll after the pressing operation,

14'. A machine for pressing and drying the end caps of paper rolls enclosed in paper wrapping, comprising a fixed head with provision whereby it may be heated, a movable carriage a second press head movably mounted on said carriage and also having provision whereby it may be heated, a screw for operating said movable press head, and

,mea-nsflfor driving said screw including a reversible belt drive.

15. A machine for pressing and drying the end caps of paper rolls "enclosed in paper wrapping, comprising 'afixed head with pro vision whereby it may be heated, a movable carriage, a second press head movably mounted on said carriage and also having.

provision whereby it may be heated, a screw for operating said movable press head, means for driving said screw including a reversible belt drive, belt shifting handles, and means for automatically shifting said handles to the inoperative positions to throw said driving means out of operation at the end of each stroke of said movable press head.

16. A machine for pressing and drying the end caps of paper rolls enclosed in paper wrapping, comprising a fixed head with provision whereby it may be heated, a movable carriage, a second press head movably mounted on said carriage and also having provision whereby it may be heated, a screw for operating said movable press head, means for driving, said screw including a reversible belt drive, belt shifting handles, means for automatically shitting said handles to inoperative positions to throw said driving means out of operation at the end of each stroke ot said movable press head, and means for automatically reversing said belt drive.

. 17. A machine for pressing and drying the end caps of paper rolls enclosed in paper wrapping, comprising a fixed head with provision whereby it may be heated, a movable carriage, a secondpress head movably mounted on said carriageand also having provision whereby it may be heated, spring means in association with said carriage and a fixed abutment, a screw for operating said movable press head relatively to the said carriage, and means for driving said screw including a reversible belt drive and mechanism coasting with said spring means to impart a reciprocating movement to said.

on the roll by the two press head's. an auto.

matic stop motion'for arresting the pressing operation, and means in association with the working faces of'said press heads to prevent theend caps sticking thereto;

19. A machine for use in pressing on the end raps of paper rolls enclosed in' paper wr'apping, comprising a hired press head, a movable press head, means for automatically moving said movable press head towards and away from the fixed press head for the purpose oi pr ing the end caps on paper rolls placed one after another between them, 'a support 'for the paper roll between said press heads, means for mounting said support so that it is free to movein the same direction as the movable press head, to equalize the pressure exerted on the roll by the two press heads, and means in association with the working faces of said press heads to prevent the end caps sticking thereto.

20. A machine for pressing and drying the end caps of paper rolls enclosed in paper wrapping, con'i'prising a, listed press head with provision whereby it may be heated, a

movable carriage, a second press head mov-' ably mounted on said ca riage and also hav screw -for o erating s" "d movable press head, means for driving said screw including a reversible belt drive, and means in association with the working faces of said press heads to prevent the end caps sticking thereto.

21. A maehinefoipresin and drying the end caps of paper rolls 'enclosed'in paper wrapping, comprising a fixed press head with provision whereby it may be heated, a movable carriage, a second press head movably mounted on said carriage and also having provision wherebyfit may be heated, a screw for operating said movable press head,

means in association with said press heads to prevent the end caps sticking thereto, means for driving said screw including a. reversible belt drive, belt shifting handles, and means for automatically shifting said handles to the inoperative positions to throw said driving means out of operation at the end of each stroke of said movable press head.

22. A machine for pressing and drying the end caps'ot' paper rolls enclosed in paper wrapping, comprising a fixed press head with provision whereby it may be heated, a movable carriage, a second press head movably mounted on said carriage and also having provision whereby it may be heated, a screw for operating said movable press head, means in association with said press heads to prevent the end caps sticking thereto, means for driving said screw including a reversible belt drive, belt shitting handles, means for automatically shifting said handles to inoperative positions to throw said driving means out of operation at the end of each stroke of said movable press head, and means for automatically reversing said belt drive.

23. A machine for pressing and drying the end caps or" paper rolls enclosed in paper wrapping, comprising a fixed press head with provision whereby it may be heated, a movable carriage, a second press head movably mounted on said carriage and also having provision whereby it may be heated,

spring means in association with said carriage and a fixed abutment, a screw ior operating said movable press head relatively to the carriage, means in association with said press heads to prevent the end caps sticking thereto, and means for driving said screw including a reversible belt drive and mechanism co-acting with said spring means to impart a continuous reciprocating movement to said screw.

Qet. A machine for use in pressing on the end caps of paper rolls enclosed in paper wrapping, comprising a fixed press head,-

a movable press head, mechanism for actuating one of said press heads for the purpose of pressing the end caps on a paper roll laced between them, a support for the paper roll between said press heads, means for mounting said support so that it is free to move in the same direction as the movable press head, to equalize the pressure exerted on the roll by the two press heads and interchangeable dies for said press heads.

25. A machine for use in pressing on the end caps of paper rolls enclosed in paper wrapping, comprising a fixed press head, a movable press head, mechanism for actuating said movable press head for the purpose of pressing the end caps on a paper roll placed between them, a support for the paper roll between said press heads, means for mountend caps of paper rolls enclosed in paper wrapping, comprising a fixed press head, a

movable press-head, a support for the paper roll between said press heads, means for automatically moving said movable press head towards and away from the fixed press head for the purpose of pressing the end caps on paper rolls placed one after another on said support, means for mounting said support so that it is free to move in the same direction as the movable press head, to equalize the pressure exerted on the roll by the two press heads, and interchangeable dies for said press heads.

27. A machine for pressing and drying the end caps of paper rolls enclosed in paper wrapping, comprising a fixed press head with provision whereby it may be heated, a movable carriage, a second press head movably mounted on said carriage and also having provision whereby it may be heated, a screw for operating said movable press head, means for driving said screw including a reversible belt drive, and interchangeable dies for said press heads.

28. A paper-roll packing machine comprising a movable and a fixed press head, mechanism for automatically moving said movable press head towards and away from said fixed press head, means in association with said press heads to prevent the material under treatment sticking thereto, interchangeable dies for said press heads, and transportable means for supporting the paper roll during the operation of the machine.

29. A machine for pressing and drying the end caps of paper rolls enclosed in paper wrapping, comprising a fixed press head with provision whereby it may be heated, a movable carirage, a second press head movably mounted on said carriage and also having provision whereby it may be heated, spring means in association with said carriage and a fixed abutment, a screw for operating said movable press head relatively to said carriage, means for driving said screw including a reversible belt drive and mechanism co-acting with said spring means to impart a continuous reciprocating movement to said screw, and scale and pointer mechanism in conjunction with said spring means to determine the pressure exerted between said press heads.

30. A machine for use in pressing on the end caps of paper rolls enclosed in paper wrapping, comprising a fixed press head, a

movable press head resiliently mounted, a support for the paper roll between said press heads, means for automatically moving said movable press head towards and away from the fixed press head for the purpose of pressing the end caps on paper rolls placed one after another on said support and means for mounting said support so that it is free to move in the same direction as the movable press head, to equalize the pressure exerted on the roll by the two press heads.

V 31. In a paper roll packing machine havingtwo press heads, belt driving mechanisms for operating the heads relative to each other both directly and reversely, handles for controlling the belt driving mechanisms, automatic means for controlling each of the belt driving mechanisms including gearing, and means carried by the eating to operate the handles in succession.

In testimony whereof I aflix my signature.

WALFRID LJUNGSTRUM.

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