US1407154A - Paper machine - Google Patents

Description

F. A. HEADSON.

PAPER MACHINE. 4 APPLICATION FILED N0'V-15, 1920,

Patented Feb. 21,1922."

2 SHEETS-SHEET I. 1

F. A. HEADSON. PAPER MACHINE. APPLICATION FILED NOV-15, I920.

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FRANK A. HEADSON, OF MILWAUKEE, WISCONSIN.

PAPER MACHIN E.

Specification of Letters Patent. Patented F E 21 1922 Application filed November 15, 1920. Serial No. 424,215.

T 0 all whom it may concern:

Be itknown that I, FRANK A. HEADsoN, a citizen of the United States, residing in M1lwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in PaperMachines, of which the following is a specification.

This invention relates to that class of paper making machines having a series of drying rolls adapted to support a web of material to be operated upon, and provided with driving mechanism comprising a driving shaft adapted to be connected with a suitable source of power, a plurality of vanable speed shafts rotatively mounted independently of each other and operativelyconnected with different rolls of such series, and mechanism operatively connecting such variable speed shafts with the driving shaft and adapted to enable the variable speed shafts to be driven at variable speeds and at any desired predetermined speed relatively to each other and to the driving shaft, so as to cause the rolls to rotate at any desired predetermined speed and enable the speed of rotation of the rolls to be varied with respect to each other exactly to any extent desired within predetermined maximum and minimum limits of speed. 7

The principal object of the invention is to provide a simple, economical and efficient paper making machine and driving mecha- -n1sm forming a part of such machine and operatively connected with the rolls in such a manner as to enable the speed of rotation of the rolls to be varied with respect to each other and with respect to other moving parts of the machine exactly or accurately to any extent desired within predetermined limits of speed, as required by the characterof the material to be operated upon and the Work to be done.

Other and further objects of the invention will appear from the following description and claims, and from the accompanying drawings. which are made a part of this specification. The invention consists in the features, combinations of elements, details of construction and arrangement of parts as herein described and claimed.

In the accompanying drawings, Figure mechanism for driving and controlling or.

vary ng the speed of rotation of the rolls relatively to each other and to the other mov- 1n parts of the machine; and

Tig. 2-2 is a view in side elevation of the machine shown in Fig. 1-1.

In constructing a paper machine provided w1th my improved driving and speed-controlhng mechanism, in accordance with my invention, I provide a main frame 1, having longitudinal side frames 2, 2, suitably connected and braced, and adapted to form suitable supports for the moving parts of the machine, and which may be of any desired, suitable, ordinary or well known form. series of dryer rolls 3 is mounted in the main frame of the machine, and comprises any desired number of dryer rolls each provided with an axle 4 journaled at its opposite ends in the corresponding side frames 2- of the machine, said rolls having hollow cylindrical bodies located between the side frames, and the axes of all of the'rolls being in parallel relation. These dryer rolls are spaced apart and disposed in any desired number of superposed tiers-in this instance, three tiers and are adapted to have wound upon the peripheries thereof and in position to travel through the entire series and between and in contact with the peripheries of the rolls, a web 5 of paper or paiper pulp in process of being formed into a sheet of paper or fibrous material and dried. Mounted forward of the dryer rolls 3 and in position to receive therebetween an endless apron or belt of felt 6 carrying a layer or web of paper pulp from the vat 7 and rotative cylinder molds-not shownis any desired number of pairs of superposed rolls 8, and 9 rotatively mounted upon or fixed to axles journaled in suitable bearings in the machine frame, the upper roll or rolls 8 being rubber-covered, and the lower roll or rolls 9 being covered, with wire or reticulated material, adapted to enable the water to be squeezed or pressed out of the pulp or web 5 carried by the felt and passing between such rolls toward the drying rolls.

Located between the rolls 8, 9, and the dryer rolls is a set of preliminary pressing rolls 10, 11, commonly known as primary press rolls, which are mounted upon suitable axles journaled in the machine frame, and are adapted to receive the felt apron 6 and web of pulp 5 between the upper rolls 10 and the lower rolls 11 of the set of pIlmary press rolls as the web and felt travel This connection may be made by means of,

from the vats and cylinder molds and from between the rolls 8, 9, toward the dryer rolls. The axles 12, 12 ofa plurality of the lower primary press rolls .11 are operatively connected with each other and with a pair of first main press rolls 13, 13, the lower one of which has an axle 14 journaled in suitable bearings in the main frame and between and inparallel relation to the series of dryer rolls and the primary rolls 10.

gearing or belt and pulley mechanism, which, in this instance consists of a pair of belt ulleys 15, 15 fixed to the axle 14, a belt pulley 16, fixed to the axle 12 of one of the lower primary rolls 11, and a belt 17 22, journaled in suitable bearings and provided with a bevel gear wheel 23 fixed to said shaft 22 and in toothed engagement with a bevel pinion 24 fixed to a shaft 25. The shaft 25 is journaled in suitable bearings in the main frame or other suitable support, and is provided with a belt pulley 26 fixed to said shaft 25 and operatively connected with a source of power or driv= in mechanism hereinafter more particularly described.

A second pair of main press rolls 27, are adapted to receive and .press therebetween the moist felt and web of paper pulp as said web of paper pulp is passing to and into position to be engaged by the first of the series of dryer rolls; and the felt 6' is permitted to separate from the web of paper pulp and pass downward therefrom on its return to the vats and pulp carrying cylinders or molds from ,which the pulp is deposited upon the felt. The construction and arrangement of pulp-containing vats and cylinder molds may be of any ordinary and well known or desired ,form common and" well known in the art, and it is therefore deemed unnecessary and undesirable that the same should be further described or shown in detail herein, as such description is unnecessary to enable those skilled in the art to understand, make and use this invention. All of the dryer rolls 3 are operatively connected by means of a suitable train or trains of spur gears comprising a multiplicity of spur gear wheels 28 each fixed to a corresponding axle 4 of a dryer roll '3 to be driven by such gears, said gears being so connected in toothed engagement with each other as to rotate the dryer rolls in the proper directions relatively to each other to fed the web of paper or ulp between and in contact with the perip cries of the entire series of dryer rolls. The spur gear wheel 28 on the axle 4 of the first dryer roll 3 is also operatively connected with the axle 29 of the lower one of the pair of second main press rolls 27, by means of a spur gear wheel 30 fixed to the axle 29, and a spur-toothed idler wheel or pinion 31 rotatively mounted between and in toothed engagement with the spur wheels 28 and 30.

Mounted 'in parallel relation to the last roll 3 of the series of dryer rolls is a set of calender rolls 32 which are mounted in.

superposed parallel relation and adapted to permit the web of paper or pulp to pass therebetween to be operated upon thereby in the usual and ordinary and well known manner. Located rearward with respect to the calender rolls is a reel 33 fixed to a rotative axle 34 which is journaled in suitable bearings in the main frame, and which may be of any ordinary and well known form. An ordinary and well known form of slitter 34 is located directly back of the reel and in position to receive and operate upon the web of paper as the latter passes to the slitter from the reel; and a winder 35 having oneor more suitable winding rolls 36, 36, each fixed to a shaft 37, journaled in suitable bearingsin the main frame, and operatively connected by means of gear wheels 38, 38, each fixed to a corresponding axle or shaft 37, and each engaged by a toothe-l gear wheel or pinion 39 fixed to a rotative driven shaft 40 located between the wheels 38, 38, and journaled in suitable bearings in the frame, is located adjacent to and rearward from the slitter in position to receive and wind the web of pa er as the latter passes through and away rom the series of dryer rolls to the winder in the operation of making and drying the paper or fibrous material or fabric to be operated upon.

In the art to which this invention relates, it is well known that great difficulty is experienced in practice in changing, varying, or controllin and regulating the speed of rotation of t e dryer rolls with respect to each other, and with respect to the primary press rolls, main press rolls, calender rolls, reel mechanism, and winder mechanism, and in driving or operating these and other movable parts or elements of a paper machine at exactly the required rate of speed with respect to each other, so as to enable these elements to be driven or operated with the required degree of accuracy at exactly any desired or required speed with respect to each other between suitable predetermined maximum and minimum limits, and thereby, so far as possible, prevent breakage, or injury to the web of paper or material being operated upon.

In order to enable these objects to be accomplished in a simple, economical and efficient manner and with facility, and to obtain other desirable results and advantages, I provide a main driving shaft 41 which is formed in any desired number of separable connected sections and rotatively mounted in suitable bearings 42 in the machine frame or other suitable su port. The sections of the main drive sha t 41 are connected by means of couplings 43, or other suitable form of connectin means; and a friction clutch cut-ofl" coupling 44 which may be of any ordinary and well known suitable form in commercial use and common and well known .in the art, forms a connection between the 'for operatively connecting the main driving shaft with the motor, or source of power, in this instance, consists of a variable speed power transmission device which comprises in its construction a frame 46 in which is journaled in suitable bearings a driving shaft or constant-speed shaft 47, and a variable speed shaft or driven shaft 48 which are rotatively mounted in parallel relation and operatively connected with each other by means of a pair of truncated-cone-shaped belt-driving disks or pulley-wheel members 49, mounted upon and rotative with said shaft 47, and movable with respect to each other in a direction lengthwise of said shaft. A second pair of similar, but belt-driven, disks or pulley wheel members 50, is mounted upon and rotative with the driven or variable speed shaft 48, and movable with respect to each other in a direction lengthwise of said last mentioned shaft. These disks have their conical or truncated-cone shaped surfaces facing toward each other and adapted to engage the corresponding tapered or inclined margins of a V-shaped belt 51 which is mounted upon and in position to extend between the tapered conical or truncated-cone-shaped surfaces of said disks 49, and 50. Pivotally mounted upon adjustably supported pivots 52, 52, located intermediate said shafts 47, 48, and pivotally connected by means of a link 53, is a pair of diskadjusting or operating) levers 54, 54, for shifting or adjusting t e members of each pair of said disks toward and from each other, so as to vary the speed of rotation of the shafts 47 and 48 with respect to each other to any extent desired or required with in predetermined maximum and minimum limits. Each of these levers is operatively connected with a corresponding disk 49, by means of a connecting member, or yoke 55 connected with the corresponding disk so as to permit the rotation of the same, and flexibly connected with the lever, which may be formed of upper and lower bars having openings therein through which the stems of the yokes or socket members 55 extend. Each of the levers 54 is connected in a similar manner with the corresponding disk 50, by means of a similar swivel, socket member or yoke 56 which is connected with the hub of such disk, and with the lever 54 in such a manner as to form a flexible or swivel connection between such disk and the corresponding lever. Each lever is also flexibly connected at or near one end, with an adjusting or shifting screw 57, which is rotatively mounted in arallel relation to the shafts 47 and 48. his shifting screw is provided with right and left screw threadson opposite sides of its longitudinal center, each of such oppositely threaded portions of the shifting or adjusting screw being provided with a threaded connecting member or yoke 58 in threaded engagement therewith and flexibly connected with the corresponding lever 54, by means of stems on each yoke extending throughesuitable openings in the corresponding lever, whereby the turnin of the shifting screw 57 in one direction will cause the adjacent ends of the levers 54, and the corresponding disks to be moved toward each other so as to force the belt 51 outward toward the peripheries of such disks, and simultaneously cause the other pair of disks to be moved apart a suitable distance to enable the belt to move inward between such disks toward the axial centers of the same, thus varying the speed of rota tion of the shafts 47 and 48 with respect to each other.

The shaft 48 is operatively connected with the main drive shaft 41 by means of a belt pulley 59 fixed to the shaft 41, a belt pulley 60, fixed to the shaft 48, and a belt 61 mounted on and connecting said pulleys.

The shaft 47 is connected with the motor 45 by means of a belt pulley 62 fixed to the shaft 47, a pulley 63 fixed to the motor shaft 64, and a belt 65 mounted on and connecting said beltpulleys. By this arrangement, it

main driving shaft 41 by means of a bevel lath gear wheel 67 fixed to the shaft 66 and in toothed engagement with a bevel inlon 68 fixed to the driving shaft 41. nd said shaft 66 is operatively connected with the reel mechanism 33 by suitable gearing which in this instance comprises a belt pulley 69 fixed to said shaft, a pulley 70 fixed to a rotative shaft 71, a belt 72 on said pulleys, a gear wheel or sprocket 73 fixed to the shaft 71. a gear wheel or sprocket 74 fixed to the shaft 34 of the reel, and a chain orflexible element 75 mounted on and connecting said last mentioned gear wheels. The slitter 34 may be of any ordinary and well known form, and connected with the reel mechanism, or any suitable moving part of the machine, such, for instance, as the shaft 66, by any suitable gearing or connecting mechanism-not shown.

The winder mechanism is operatively connected with the main driving shaft 41 by means of a variable speed transmission and connecting mechanism 7 6 consisting of the same construction and arrangement and combination of parts already described and numbered 46 to 58 inclusive. The'variable speed transmission and connecting mechanism 76 comprises in its construction a beltdriving shaft 77,-which may have a constant speed, and corresponds with the shaft 47 of the variable speed transmission mechanism located between and connecting the motor with the main driving shaft 41, already described,and a variable speed shaft 7 8, which corresponds with the shaft 48 already described, and gear, belt, and lever and shifting mechanism constructed and arranged to operate as already described and shown in the transmission mechanism connecting the motor with the main drive shaft 41. The shaft 78 is connected with the rotative shaft 40 of the winder mechanism, by means of suitable friction clutch mechanism, which may be of any ordinary and well known or desired form familiar to those skilled in the art, and therefore need not be described in detail herein.

The main driving shaft 41 forms the beltdriving or constant-speed shaft of a plurality of connected variable-speed powertransmissions mechanisms 80, 81, 82 and 83, each of which comprises in its construction a belt-driven or variable speed shaft 88 j ournaled in suitable bearings in a frame 86 in parallel relation to the main driving shaft 41. All of the belt-driven or variable speed shafts 88 are rotatively mounted independently of each other; and each is operatively connected with and adapted to have its speed of rotation varied or changed to exactly any desired or required extent or ratio relatively to. the speed of rotation of the main driving shaft 41 within predetermined maximum and minimum limits of s eed.

In each of the variable-speed power transpairs-being movable toward and from each other or relatively in a direction lengthwise of the main driving shaft on which they are mounted by means of suitable splines or similar connecting members adapted to permit the disks to 'be shifted with respect to each other longitudinally of the shaft.

A second pair of similar, but belt-driven, disks or pulley wheel members 90, 90, are mounted upon and rotative with the driven or variable speed shaft 88 of each of the variable-speed transmission mechanisms 80, 81, 82, 83, respectively, the wheel or disk members 90, of each pair being movable toward and from each other in a direction lengthwise of the shaft on which they are mounted by means of splines, keys, or similar connecting members adapted to permit the shifting of the disks of each pair toward and from each other, as well. as longitudinally of the shafts on which the disks are adjustably or slidably mounted.

The truncated-cone shaped disk members of each pair of disks have their conical or tapered belt-engaging faces facing toward each other and adapted to engage the corresponding tapered or inclined margins of a belt 91, which is approximately ll-shaped in cross-section, and has inclined side marginal faces which are at a corresponding angle to the conical surfaces of the disks between and in engagement with which the belt is mounted.

Pivotally mounted upon or connected with adjustable pivots 92, 92, located lintermediarte, and by preference, midway log c:- tween said main drive shaft 41 and the variable speed shaft 88, of each of the transmission mechanisms 80, 81, 82, 83, and pivotally connected by means of a link 93, is a pair of disk-adjusting, shifting or operatin levers 94, 94, each of which may be forms of a pair of upper and lower parallel bars extending from the main driving shaft 41 to the corresponding variable speed shaft 88, and adapted to admit said shafts between the upper and lower bars or spaced apart portions of the levers. These shifting levers are for shifting or adjusting the members of each pair of disks toward and from each other, to vary the speed of rotation of the shafts 88 of the respective transmission mechanisms 80, 81, 82, 83 with respect to each other and with respect to the main driving shaft 41 with which said variably speed shafts are operatively connected in the manner herein described.

Each of these shifting levers 94 is operatively connected with a corresponding beltengaging driving disk 89 on the 11134121130 disks 90, 90 located between each pair of such shifting levers-by means of a swivel, socket member or connecting yoke 96 which is connected with the hub of such disk and with the lever 94 in such a manner as to form a flexible or swivel connection between such disk and lever.

Each shifting lever of each pair is also flexibly connected at or near one end of such lever, with a shifting or adjusting screw or threaded shaft 97, which is journaled in suitable bearings in parallel relation to the shaft 41 and variable speed shafts 88, there being one of said shifting screws for each pair of shifting levers, and one pair of shifting levers for each shaft 88.

Each shifting screw or shaft 97 is provided with right and left hand screw threads thereon, the left hand threads being located between the longitudinal center and one end of the shifting screw, and in operative engagement with one of the shifting levers of the corresponding pair of levers, and the right-hand screw threads being between the center and opposite end of the shifting screw and operatively connected with the other lever of the pair to be shifted by such screw.

Each of the levers 94 is provided with a threaded connecting member in the form of a socket or threaded yoke 98 having stems or pivot portions adapted to extend through or into suitable openings in the lever, each of said socket members being thus pivotally connected with its lever, and in threaded engagement with the correspondingly threaded portion of the shifting screw by means of which such lever is to be shifted or adjusted. It will thus be readily seen that by turning any shifting screw 97 in one direction, the corresponding engaged pair of shifting levers 94 will be shifted with respect to each other in such a manner that one end of the pair of levers will be brought closer together, and the other ends of such levers will be caused to move apart, so as to force one pair of belt-engaging disks located between such levers toward each other, thereby forcing the belt 91 outward between such disks and; toward the peripheries thereof, and

, simultaneously cause the other pair of disks located between such levers, to be. moved apart a corresponding distance thereby permit-ting the belt to shift inward between such disks and towlard the axial centers thereof, thus varying the speed of rotation of the shafts 88 with respect to each other and with-respect to the main driving shaft 41 to exactly any desired or required extent within predetermined maximum and minimum limits of speed, and enabling the shafts 88 to be rotated synchronously with respect to each other and with respect to the main drive shaft and at exactly any desired speed of rotation.

The variable speed shaft 88 of the transmission mechanism 80, is operatively connected with the press rolls 10 and 13, already described, by means of a gear or belt pulley wheel 100 fixed to said shaft 88 and a belt 101 mounted on said belt pulley and a simi- 41 is thus operatively connected with said press rolls 10 and 13.

The main driving shaft 41 is operatively.

connected with the forward group of dryer rolls 3, by means of the transmission mechanism 81 already described, and by means of a shaft 102 journaled in suitable bearings and connected with the shaft 88 of said transmission mechanism 81 by means of an ordinary friction clutch cut off coupling 103, which may be of any ordinary and "well known form ;the shaft 102 being operatively connected with said dryer rolls of the forward group of rolls by means of a rotative shaft 104 journaled in suitable bearings, a

spur gear 105 fixed to the shaft 104' and in.

'lar belt pulley 26 fixed to the shaft 25 already described. The main driving shaft,

nected with the variable speed shaft 88 of I said transmission mechanism 82 by means of an ordinary friction clutch cut-ofi' coupling 109, which may be of any ordinary and well known form; the shaft 108 being operatively connected with said group of dryer rolls by means of a shaft 110 journaled in suitable bearings, a spur gear 111 fixed to the shaft 110 and in toothed engagement with adacent gears 28, of said group of dryer rolls,

a bevel gear wheel 112 fixed to the shaft'110, and a bevel pinion 113 fixed'to the shaft 108 and in toothed engagement with the gear wheel 112.

The main driving shaft 41 is operatively connected with the calender mechanism 32, by means of the transmission mechanism 83 already described, together with a shaft 114 journaled in suitable bearings and connected with the variable speed shaft 88 of said transmission mechanism 83 by means of an ordinary friction clutch cut-of coupling 115 having frictionally engaged members connected with said shafts 114 and 88 respectively, the shaft 114: being operatively connected with the calender mechanism 32 by means of a shaft 116 journalled in suitable bearings, a gear wheel 117 fixed to the shaft 116, a gear wheel 118 fixed to the shaft 119 of a calender roll 32 and operatively engaged by or connected with the gear wheel 117 in any ordinary and well known manner, a bevel gear wheel 120 fixed to the shaft 116, and a bevel pinion 121 fixed to the shaft 11a and in toothed engagement with the gear wheel 120.

The means for operatively connecting the main driving shaft 41 with the winder mechanism and other moving parts at the rear or discharge end of the machine by means of the transmission mechanism 76 and connecting mechanisms, has already been described.

It claim:

1. In a machine of the class described, a main driving shaft rotatively mounted and adapted to be connected with a source of power, a plurality of counter-shafts rotatively mounted independently of each other and each independently connected with mechanism to be operated, a plurality of pairs of relatively movable truncated-cone shaped disks mounted upon and rotatlve with said driving shaft, a pair of truncatedcone shaped disks mounted in movable relation to each other upon and rotative with each of said counter shafts, a bevel-edged belt mounted between and having beveled side margins in engagement with the tapered surfaces of each pair of said last-mentioned truncated-cone shaped disks, and extending between and in engagement with the tapered surfaces of a correspondingpair of said truncated-cone shaped disks on said main driving shaft, and means for shifting the disk members of each pair of belt-engaging disks toward and from each other in a direction lengthwise of the shaft on which such disk members are mounted.

2. In a machine of the classdescribed, a main driving shaft rotatively mounted and adapted to be connected witha source of power, a plurality of variable-speed counter-shafts rotatively mounted independently of each other and each independently connected with mechanism to be operated, a

plurality of pairs of relatively movable truncated-cone shaped disks mounted upon and rotative with said main driving shaft, a pair of truncated-cone shaped disks mounted in -movable relation to each other upon each counter-shaft and rotatable with the same, a bevel-edged belt mounted between and having beveled side margins in engagement with the conical surfaces of each pair of said last mentioned disks, and extending between and in engagement with the conical surfaces of a corresponding pair of said dlsks on said main driving shaft, and lever each pair of belt-engaging disks on the main.

drive shaft, and operatively connected with a pair of belt-engaging disks;on a corre;.-

spondihg variable-speed counter-shaft, for

shifting the disks on any desired countershaft and the disk members of the corresponding pair of belt-engaging disks on the main driving shaft simultaneously in 0-pposite directions with respect to the longitudinal center of the belt engaged by such disk members.

3. In a machine of the class described, the combination'of a series of rolls rotatively mounted and adapted to support a web of material to be operated upon, a main driving'shaft journaled in suitable bearings and. adapted to be connected with a source of power, a plurality of variable speed countershafts rotatively mounted independently of each other and independently connected with different rolls of said series, a plurality of pairs of conical belt-driving disks mounted upon and rotative with said main driving shaft and movable with relation to each other in a direction lengthwise of the shaft, a pair of truncated-cone shaped disks mounted in movable. relation to each other upon each counter-shaft and rotatable with the same, a bevel-edged belt mounted between and in engagementwith the conical surfaces of each pair of said last mentioned disks and between and in engagement with the conical surfaces of a corresponding pair of said disks on the main driving shaft, and shifting -mechanism in operative, engagement with each pair of said belt-engaging disks on the main driving shaft, and. operatively connected with a pair of belt-engaging disks on a corresponding variable-speed counter-shaft, and acting to shift the disks on such counter-shaft and the disk members of the corresponding pair of belt-engaging disks on the main driving shaft in opposite directions with respect to the longitudinal center of the belt engaged by such disk members, to enable the speed of any desired counter-shaft and the mechanism operated thereby to be varied exactly to any extent required.

4:. ln'a machine of the class described, the

and movable with relation to each other i 39 a direction lengthwise of the shaft, a pair of truncated-cone shaped belt-pulley members mounted in movable relation to each other upon each counter-shaft and rotative with the same, a belt mounted between and in engagement with the conical surfaces of each pair of said counter-shaft belt-pulley members and between and in engagement with the conical surfaces of a corresponding pair of saidbelt-pulley members on the main drive shaft, and shifting mechanism operatively connected with each pair of beltpulley members on the main drive shaft and with a pair of said belt-pulley members upon a corresponding variable speed coun- 15 ter shaft,-for shifting said belt-pulley members' to enable the speed of rotation of. any desired counter shaft and the mechanism operated thereby to be varied exactly to any desired extent with respect to the speed of rotation of the other counter-shafts and with res ect to the main driving sha October 27,

igned at Chicago, Illinois, 1920.

FRANK A. HEADSON. Witnesses:

HARRY I. CROMER, FRANK J. GERAGHTY.

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