US1488126A - Paper slitter and winder - Google Patents

Description

March 25 1924. 11,488,126

5. M. LANGSTON ET AL PAPER SLITTER AND WINDER Filed June 9 1921 3 Sheets-Sheet 2 vemtoz flaw/ad flllaieyafou March 25, 1924. 1,488,126

' S. M. LANGSTON ET AL PAPER SLITTER AND WINDER Filed June' 9, 1921 5 Sheets-Sheet 3 4 iqa .i L C.

Patented Mar. 25, 1924. I

uni r LMZt ATENT @FIICE;

SAMUEL M. LANGSTON, OF WENONAH, AND :1

I". SIEG, OF BROOKLAWN, NEW JERSEY,

.ASSIGNOBS TO SAMUEL M. LANGSTON COMPANY, OF CAMDEN, NEW JERSEY, A

CORPORATION OF NEW JERSEY.

PAPER SLITTER AND WINDER.

i Application filed June 9,

per Slitters and Winders, of which the folwing is a specification.

Our invention is an improvement in that type of machine in which paper from a pa per making machine, a reel or other source, is slitted into sections rewound end to end, although the slitting may involve only the trimming of the side edges to leave only a single rewound roll. The machine is of the type known as -a surface Winder, that is, the paper after passing the slitting mechanism, is "delivered to a winding shaft which is free to move vertically in respect to a pair of drums which support the roll of paper and cause the rotation of the latter and the winding of the paper by surface pressure. Theroll, partieularly, when of small diameter preferably is pressed down on the winding drums to give the surface pressure by a riding or pressure roller, which is also positively rotated. and is free to move upwardly as the diameter of the roll increases.

. above referred to, and relates particularly to Our invention may be applied to various 1 different forms of machines of the type the'means for "controlling and effecting the movement of the wind shaft and pressure roller. v V

As one important feature of our invention, we provide means whereby the winding shaft, with or without the rollrof paper thereon, may be raised or lowered in respect to the frame of the machine, but permitting the shaft to float during the winding operation, so that the weight of the roll may e properly supported throughout 1ts length on the winding drums, irrespective of any'inequalities in the thickness of the paper which might tend to make the-roll of larger diameter at one end than at the other. As another-important feature, we provide means whereby the vertical movement of the riding roller resulting from the increase in size of the rewound roll of paper, may be resisted to any degree de- 1921; Serial No. 476,368.

sired, so as to properly hold the roll of paper against the winding drums, even though the roll be of small diameter and therefore of comparatively light weight. To accomplish this result we provide stationary rack bars on the frame of the machine, and a friction brake for resisting the rotation of pimons engaging therewith and movable upwardly with the riding roller- Our invention involves various other features and advantages which will bemore particularly pointed out in connection with a detailed description of one embodiment thereof.

In the accompanying drawings:

Fig. 1 is a front elevation of a machine,-

Figs. 2 and 3 are sections on the lines 2-2 and 33 respectively of Fig. 1, and

' Figs. 4, 5 and 6 are details of certain of the parts.

The invention is illustrated in connection with a machine having main end frames 10 connected together by a pair of base plates 11 and 12, and by cross braces such as a channel member 13 and an I beam 14. The main elements of the machine such as windmg drums, the idler rollers, the pressure roller, etc., extend transversely of the machine from one end frame to the other While the means i for controlling and operating these main elements are secured to OIlIlOllIlIr ed on the end frames. The course of the paper to be slitted and wound is indicated by a dot and dash line in Fig. 2, and 15 shown as passing idlers 15, 16, 17, and 18 to the front one of a pair of winding drums 19 and 219. The roll of rewound material is on a rewind shaft 21, which has a vertically guided movement in a plane between the two winding drums. Above the roll of paper is a pressure or riding roller 22, which also has vertically guided movement.

.So far as the main operation, relative posiwith the paper in case thedatter is loose, baggy or stretched more ad acent one edge than adjacent the other. The idlers 16 and 17 are shown as having adjustable friction or brake bands M and 25, whereby the free on the paper.

Lat-l rotation of these idlers may be resisted to the desired extent, and varying tensions put Between the rollers '17 and 18 there is mounted the slitting mechanism, which includes a driven cutter shaft 26 having cutters 27 mounted thereon, and a second shaft or rod 28, having brackets or carriers 29, each of which carries a friction driven cutter member 30. The cutters 27 and 30 together with the brackets or carriers 29, may be adjusted lengthwise of their respective shafts to any desired position to secure the desired width of slitted strips, and the cutters 30 may be swung entirely out of engagement with the paper by loosening or turning the brackets or carriers.

All of the cutters of one set may be moved 'endwise in respect to the other set to simultaneously separate all of the cutters by an endwise movement of one shaft in respect to the other. As the shaft 26 is positively driven while the shaft 28 is non-rotatable, it is simpler and more convenient to separate the cutters by an endwise movement of the shaft 28 instead of by the movement of the shaft 26. There is indicated a hand wheel 31 for efi ecting this endwise movement of the shaft 28. The winding. drums and shaft 26 may be driven, and at the proper relative speeds, by appropriate power and gear mechanism. The shaft 32 of the front winding drum may be connected to any suitable source of power, and the shafts of the two drums connected by gears 33 and an intermediate gear 34, so that the two drums rotate in the same direction. The shaft 26 may have an extension provided with a pinion 35 meshing with the gear 34.

The winding shaft 21 which is not positively driven, is mounted in bearings 36 carried by bearing blocks 37 slidable vertically on the front vertical edges of the end frames 10. The two bearing blocks 37, the bearings 36, and the shaft 21 are counterbalanced so, as to be free to float without material tendency toward upward or downward movement, and furthermore to float independently of each other. As shown, the

two end frames have on their inner sides sheaves 3.8 over which flexible connections such as cords 39, extend from lugs 40 on the bearing blocks to counterbalancing weights 41. As previously indicated, these weights 41 are of substantially the same total mass as the bearing blocks, bearings and winding shaft. Thus, as the roll of paper increases in size, the bearings may move vertically, and in case the roll develops to-a larger diameter at one end than at the other, the roll may be kept in proper engagement with the drums by a difl'erence in the movement of the two bearing blocks.

' lln connection with the winding shaft and 1ts bearings there is provided means whereby the bearings may be positively lifted to frame carries an endless chain 42 passing over sprocket wheels 43, 44, and 45, so positioned that the run of the chain between the sprocket wheels 44 and 45 is. substantially vertical and parallel to the front edge of the frame. If desired, it may travel in a groove in the front edge of the frame. There is illustrated a simple means for connecting these chains to the bearing blocks for the positive lifting or lowering of the latter, and at the same time permit proper floating of the winding shaft. The means illustrated is only one which might be designed for accomplishing thisresult. As shown, each chain'42 has a bar 46 secured thereto and vertically movable in a groove in the front edge of the frame. Each bar has a forwardly extending lug 47 and each bean ing block 37 has a threaded stud 48 freely movable vertically through the corresponding stud 47, but having such movement limited by nuts 49. The distance between these two nuts may be varied at will to give the desired lost motion between the chains 42 and the bearing blocks 37 "When the chains 42 are moved in one direction the lugs 47 will engage beneath the nuts 49 and lift the bearing blocks while when the chains are moved in the opposite direction the lugs will engage the lower nuts and force the hearing blocks downwardly. The lost motion is made slightly in excess of the maximum difference in diameter which may occur at the opposite ends of the roll of paper.

For conveniently and positively moving the chain 42 to lift the roll of paper, operating means is provided which includes a crank, hand wheel, or other equivalent me ber 50; mounted on one of the two end frames. The shaft 51 of this hand wheel is connected to one of the two sprocket wheels 43 of the chain 42, by means of a sprocket wheel 52, a chain 53, and a sprocket 54 coaxial and rigid with the sprocket wheel 43. The chain is kept in proper tension by a suitable adjustable idler sprocket 53 The two sprockets 44 on the two end frames, are mounted on a transverse shaft 55, so as to turn together. Thus, when the hand wheel 50 is rotated, this motion is transmitted through the parts 52, 53 and 54 to one of the sprocket wheels 43, and from the latter to the shaft 55 through the chain 42 and sprockets 44 and 45. The two chains 42 are thus conveniently operated from the hand wheel 50, and are caused to move simultaneously and to equal extent. For counterbalancing the weight of the bars 46 which are connected to the front vertical runs of the chains 42, the shaft 55 is provided with a sheave 56, to which is secured one end of a flexible connection 57 to a counterbalancing weight 58*; also at left side of Figs. 1 and 3.. This weight constantly tends to rotate the shaft counter clockwise, as viewed in Fig. 2, and thus counteracts the opposite tendency of the bars 46. Forlocking-the parts so that the heavy roll of paper may be supported above and out of engagement with the winding drums, there is provided suitable ratchet and pawl mechanism. This is illustrated as including a ratchet wheel 57 (see Fig. 4) keyed to the shaft 51, and a pawl 58 engaging therewith and connected by a rod 59 to a foot pedal 60. The

'- pawl rides over the teeth during the upward movement of the roll during the winding operation, but must be held out of engagement with the ratchet by depressing the foot pedal 60 when the winding shaft is to be lowered.

The pressure or riding roller 22 is carried by a shaft'61 mounted in bearings on a pair of bearing blocks 62, which are vertically movable on the front edges of the end frames and above the bearing blocks 37. For positively rotating the riding roller, there is provided a vertical shaft 63 mounted in bearings on one of the end frames and having meshing miter gears 64 and 65 connecting it to the shaft 61. The shaft 63 is driven at its lower end preferably by means of a bevel pinion meshing with a bevel gear 66 which may be connected to the intermediate gear 34. The gear 64 is mounted in a bearing on one of thebearing blocks 62, so as to move vertically with the latter, and is keyed to the shaft 63 so as to be driven and to transmit power to the riding roller 62, irrespective of the ver tical adjustment of the latter. Preferably at some point in the driving connection to the pressure roller there is anadjustable slip friction connection as is commonin the art.

For holding the riding roller 22 absolute ly parallel with the winding drum, the two bearing blocks 62 carry a cross shaft 67 having pinions 68 meshing with rack bars 69 rigidly secured to the end frames .of the machine. The shaft 67 at one end is provided with a brake drum 7 O, and one of the two bearing blocks 62 has a stud 71 carrying a pair of brake shoes 7 2' connected together by an adjusting bolt 73. As the brake shoes are carried by the bearing block and engage with the drum rigid with the pinion shaft 67, the tightening of these brake shoes resists the rotation of the shaft and pinion and thus by thissimple means, the resistance of the upward movement of the riding roll may. be varied at will, and a comparatively light weight roller may have the pressure effect of a very heavy one.

For facilitating the raising of the pressure roller mechanism when the friction brake is released, there is provided a pair of counterbalancing weights 74 vertically slidable on the rear of the end frame, and each connected to its corresponding bearing block 62 by a chain 75 extending over a pair of sprocket wheels 76 and 77; For conveniently but positively raising or lowering the riding roll mechanism there is provided a crank, hand wheel or other equivalent means suitable for manual operation. As shown, the hand wheel 78 is coaxial with the hand wheel 50, and is rigidly secured to a sprocket wheel 79, the sprocket wheel and hand wheel being freely rotatable on the shaft 51. A chain 80 transmits power from the sprocket wheel 79 to a sprocket wheel 81 which is rigid and coaxial with one of the two sprocket wheels 77. The chain is kept under proper tension by a suitable adjustable idler sprocket 80. Upon loosening the brake shoes 72, the riding mechanism and its counter-balancing weights 74 may be conveniently raised or lowered to the desired position by rotation of the hand wheel 78. The-counterbalancing is such that no pawl or ratchet is necessary for holding the parts in any adjusted position when the machine is not in operation, but the tightening of the brake shoes 72 will put sufficient tension on the pinion shaft 67 to hold the riding roll in any desired position, even though not accurately counterbalanced. As above noted, the hand wheel 78 serves for the operating of only one of the chains 7 5, but as the pinion shaft insures the simultaneous vertical movement of the two bearing blocks 62 and all parts connected thereto, it is not necessary to positively operate both of the chains 75. Thus, the two upper sprocket wheels 77 may be independently mounted as indicated in Fig. 1, instead of requiring a cross shaft to insuretheir simultaneous open ation.

Having thus described our invention, what we claim as new and desire to secure by Letters Patents is 1. Winding. mechanism, including rack bars, a riding or pressure roller movable vertically as the roll of material being wound increases in size, a shaft parallel to and movable with said pressure roller, pinions on said shaft adjacent to opposite ends thereof and meshing with said rack bars to prevent relative Vertical movement of the opposite ends of said roller and adjustable means for varying the resistance to rotation of said shaft. Y c

2. Winding mechanism including a pair of winding drums for supporting the roll of material being wound, a pressure roller vertically movable as the roll of material being wound increases in size, a shaft paral lel to said pressure roll, a pair of bearing blocks, each having bearings for both said friction means for resisting but permitting the rotation of said shaft and the bodily movement of said bearing blocks along said rack bars.

3. Winding mechanism including a pair of Winding drums for supporting the roll of material being wound, a pressure roller vertically movable as the roll of material being wound increases in size, a shaft parallel to said pressure roll, a pair of bearing blocks, each having bearings for both said shaft and said roller, rack bars, pinions on said shaft adjacent to opposite ends and meshing with said rack bars, a brake drum secured to said shaft and means carried by one of said bearing blocks for engaging with said brake drum for resisting the rotation of said shaft and the bodily movement of the pressure roll.

4. Winding mechanism including a pressure roller, bodily movable as the roll of material being wound increases in size, a shaft, a pair of bearing blocks each having bearings for said shaft, pinions at opposite ends of said shaft, means engaging with said pinions for insuring simultaneous and equal movement of said bearing blocks and adjustable means for resisting but permitting the rotation of said shaft and pinions.

5. Winding mechanism including a pressure roller bodily movable as the roll of ma terial being wound increases in size. a second shaft, a pair of bearing blocks each having bearings for said shaft and said roller, pin-.

ions at .opposite ends of said shaft, means engaging with said pinions for insuring simultaneous and equal movement of said bearing blocks, a brake drum secured to said did shaft and an adjustable brake shoe carried by one of said bearing blocks and engaging with said drum. i

6, Winding mechanism includinga pressure roller bodily movable as the roll of material being wound increases in size, a pair of stationary rack bars adjacent to opposite ends of the roller, bearing members for said roller and movable along said rack bars, pinions carried by said members and meshing with said rack bars, connections between said pinions for insuring their simultaneous and equal rotation and bodily movement along "said rack bars, and means for applying variable resistance to the rotation of said pinions.

7. Winding mechanism including a pressure roller bodily movable as the roll-,of material being wound increases in size, a pair of rack bars adjacent to opposite ends of the roller, bearing members for said roller and movable along said rack bars, pinions carried by said members and meshing with said rack bars, connections between said pinions for insuring their simultaneous and equal rotation and bodily movement along said rack bars, and means connected to one only iaaaiae of said bearing members for lifting both of said bearing members equally and simultaneous y.

8. Winding mechanism including a pres sure roller bodily movable as the roll of material being wound increases in size, means for raising or lowering the opposite ends of said roller simultaneously and to equal extent, including a pair of bearing members for the opposite ends of said roller, a shaft parallel to said roller and carried by said bearing members, a pair of stationary rack bars, pinions on said shaft meshing with said rack bars, and means having flexible connec tions to one only of said bearing members Ifor moving it along its correspondingraclr 9. l vinding mechanism including a pres-= sure roller bodily movable as the roll of material being Wound increases in size, means for raising or lowering the opposite ends of said roller simultaneously and to equal extent, including'a pair of bearing members at the opposite ends of said roller, a shaft parallel to said'roller and carried by said bearing members, a pair of stationary rack bars, pinions on said shaft meshing with said rack bars, a pair of counterbalancing weights having flexible connections, each to its corresponding bearing member, and operatingmeans acting on one only of said flexible connections for raising its corresponding bearing member and, through the pinion shaft and rack bars, simultaneously raising the other bearing member.

10. Winding mechanism including a pair of end frames having stationary rack barssecured thereto, a pair of bearing members vertically movable along said rack bars, a shaft and a pressure roller both carried by said bearing members, pinions on said shaft meshing with said pressure roller, a pair of counterbalancing weights, each having aflexible connection to its corresponding bearing member, adjustable friction means carried by one of said bearing members for applying resistance to the rotation of said shaft, and lifting means operating through one only of said flexible connections for ralsing and lowering the opposite ends of said pressure roller simultaneously.

11. Winding mechanism including end frames, a rack bar'secured to each end frame, a pair of sprocket Wheels, one mounted on each end frame above the upper end of the corresponding rack bar, bearing members movable along said rack bars, a pressure roller mounted in said bearing members, rigidly connected pinions on said bearing members, and meshing with said rack bars, a pair of counter-balancing weights, flexible connections extending over said sprocket wheels from said bearing members to said weights, a third sprocket wheel rigid with one of said first mentioned of winding sprocket wheels, and a chainengaging with said third sprocketwheel and operable through one of the first mentioned flexible connections for raising and lowering said bearing members and pressure roller.

12. Winding mechanism including a pair of windin drums for supporting and rotating the r0 1 ofmaterial, a winding shaft for said roll, a pair of bearing members for 'said shaft, a pair of counterbalancing Weights one for each of said bearing members and permitting the independent relative vertical movement of said bearing members, and elevating mechanism having lost motion connections with said bearing members for raisin .or lowering the latter;

13. Vinding mechanism including a pair drums for supporting and rotating thero of material, awinding shaft for said roll, a pair of bearing members for said shaft, a pair of counterbalancing weights one for each of said bearing members and permitting the independent relative vertical movement of said bearing members, a pair 25 of elevating members, means for simultaneously raising or lowering said members, and

lost motionconnections between .said elevating members and said bearing members.

14. Windin mechanism including means for rotating t e roll of material, a winding shaft for said roll and movable away from saidmeans as the diameter of the roll increases a pair of bearing members for said shaft, a air of elevating members, means for simu taneously raising or lowering the latter to equal extent, lost motion connections between each elevating member and its correspondin bearing member, and meansfor counterba ancing the weight of said'elevating members independently of the weight of the winding roll and bearing members.

15. Windin mechanism including means for rotating t e roll of material, a winding shaft for saidroll, a pair'of bearing members for said shaft, a pair of elevating members, lost motion connections between each elevating member and its corresponding bearing member, separate oounterbalancing weights connected to each bearing member for counterbalancing the weight of the lating member, whereby saidbearing members a may have free butlimited vertical movement in respect to their corresponding elevating members but may be positively elevated by the action of said elevating members.

'17. Winding mechanism including a pair of winding. drums for supporting and rotating the roll of material, a pressure roller forengagement with the roll of material and bodily movable upwardly as the roll of material increases in size, means for holding said pressure roll in accurate parallelism with said winding drums, a winding shaft, bearing members for the opposite ends of said shaft, and independent counterbalancing means for said bearing members permitting of the variation in the elevation of the bearing members in respect to each other, whereby the winding shaft may operate out of parallelism with the drums and pressure roller.

18. Winding mechanism including a pair of winding drums for sulpporting and rotating the roll of materia, a ressure roller for engagement with the re 1 .of material and bodily movable upwardly as the roll of material increases in size, means .for holding said pressure roll in accurate parallelism with said winding drums, a winding shaft, bearing members for the opposite ends of said shaft, and separate elevating members for said bearing members and permitting variation in the'relative elevations of said bearing members during the winding operation. v

Signed at Camdemin the county of Camden and State of New Jersey, this 31st day of May, A; D. 1921.

- SAML, M. LANGSTON.

ARL SIEG.

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