US954089A - Paper-roll-braking mechanism for printing-presses. - Google Patents

Description

Y S. G. Goss. PAPER noLL BRAKING MEGHANISM Fon PRINTING PRESSES.

APPLICATION FILED HAY 20, 1909. y 954,089, Patented Apr. 5, 1910.

3 SHEETS-SHEET 1.

K/9.7@ 5W. f. fw' w Y s. G. Goss. PAPER BOLL BRAKING MEGHANISM FOR PRINTING PRESSES.

APPLICATION FILED MAY 20, 1909. I

Patented Apr. 5, 1910;

3 SHEETS-SHEET 2.

A S. G. GOSS.

PAPER POLL BRAKING MBGHANISM Pon PRINTING PRESSES.

LPPLIOATION FILED HAY 20, 1909.

- SAMUEL e.

citizen ofroll spindles in of this character'consist of a great length of 2o Q To' @nahm Goss, or omesso, LLINors.

Be it known that I,`=- S.' A1Ulll q the United j States, at Chicagin the countyn'of'Cook andStat'e of Illinois, have inveptedcertain new and use- Mechanism for Printin -Presses,' of whic 1 the following is a spec` cation, reference bcinhad to the accompanying drawings.

y invention relates to improvements in' mec upon-a web its object is to providejnew and improved mechanism by means'ofywhichthe brake on the tension roll yInayj-be;automatically regulated by the tension iofthe paper. As is well-known, the web rolls of printing presses paper wound in a roll and carried by a spindle which is laced in the ress and the paperis drawn rom*` the roll y the Operation of the rotary printing cou les of the.

constant tension Aby press when the pressisqinoperatlon. In all such cases, it haslbe wa or other to apply rol mechanismin order-togive to the web a -proper tension when .passing through the press', and this tension o'f -course may vary from time toftime ini accordance ywith the attendant circumstances, and 'the tension of the web itself may vary from time to time.

The object ofmy 'icustomary in some lnvention therefore, is to supply a new and improved braking mec anism in which the paper may be kept at a means operating upon the brake and controlled by the tension upon the web, so that the varying tension of the web o crates to tighten or loosen the-brake accor ingas the tension may become loose or greater. f Y

More particularly still my invention `relates to neumatically operated mechanismv for working the' brake and controlled in its tulip in its operation by the-tension of the We My invention has also fora'further objectl .l to provide a mechanism connected with the pneumaticall -operatedbrake and operating incase of a reak of the Web'to automatically set the' brake and stop the rotation of the web roll of paper.

Goss, a `ill being an end View, seen hanisrn for applying a brake to aper printing .presses for printingor continuousjstrip of paper, andvbe set or released by hand,

sa brake to the paper f .1A I n 7 STATES PATENT OFFICE.-

I accomplish these objects by the means ustrate'd in the specifically described. That which I believe to forth in the claims.

In the'drawings:-Figure 1 is a side elevation of a portion of a printing press frame, showing -rmy mechanism. Fig. 2 is a top or plan view .of the same. Fig. 3 is adetail,

be new will set themechanism shown in the lower righthand cornerof Fig. 1. Fig. 4 is a detail, beingv a view of a portion of the air-cylinder and connections with one end of the brake, showing 'the device by whichthe brake may if desired. Fig. 5 isa vertical cross section of the. upper valve operated by devices controlled by the web tension. Fig. 6 is a section on line 6 6 of Fig. l. Fig. 7 is a cross sectionJ of the upper hand-operated valve for admitting a supply of compressed air to the braking mechamsm.

8 indicates a art of aframe of an ordinary rotary per ecting prlnting press which AssIeNoaTo 'THE Goss PRINTING Pnnss coltrm,- or cnrcaeo, ILLINoIs, A conroaamron or rumors.

PAI-'rfnnanoLL-Bnsxmc miicnanrsm ron rnIN'rING-Pnnssns. Y 954,039. Patented Apr. 5, 1910.

drawings and hereinafter from the right, of r carries of course the usual printlng couples v not shown). frame 8 which supports in the ordinary manner the spindle l0 of a web roll 11.

f 12 indicates a brake pulley on the outer en'd ofthe spindle 10 and secured thereto in any appropriate manner.

13-14 indicate levers provided respectively With 'arms 13a-13b and '14a- 149:

are curved and arek y The arms 1,3a and 14" provided with brake shoes 1 5-16 which are set therein and are adapted to engage theperiphery of the brake pulley 12. As is best shown in dotted lines in Fig. 2, the periphery of the brake roll 12 is preferably V-shaped, andthe brake members 15%16 are.

similarly shaped to engage the V-shaped peripheral groove in the brake roll 12,- in such a manner that when the arms 13H-14a are forced together inthe `manner hereiny after described, vthe brake members 15--16 may be causedto bear upon the V-shaped periphery ofthe brake roll 12 and operate to brake the roll spindle 10.

9 indicates a bracket on said 17 indicates a screwv having a hand-wheel 18 secured u on its/outer end'. Thescrew 17 .v

is journals at its inner end inl a' suitable other, by the hand wheel 18, the brake members may. be adjusted toward or from the frame 8 to adjust the roll of paper endwise.

22 indicates an air cylinder which is pivotally supported upon the outer end of the arm 14h of the brake lever 14. 23 indicates an air-tight piston moving in said cylinder, and havlng a piston-rod 24 which passes outward through suitable packing through the upper end of the air-cylinder 22 and at its other end is pivotally connected with the outer end of the arm 13b of the brake lever 13. It will be obvious that when the piston 23 is moved in one direction or the other by the means hereinafter described, the arms 13b and 141 will be moved toward or away from each other, separat-ing the brakes from the brake roll when the arms 13b and 14" are moved toward each other and moving them into engagement with the brake roll when lthe arms 13b and 14b are separated from each other.

The upper end of the piston rod 24 is screw-threaded and upon the screw-threaded portion is mounted a hand-wheel 2 5 which is provided with a correspondingly screwthreaded opening which the screw-threaded portion of the piston rod 24 engages.

26 (see Fig. 4, shown also in` dotted lines in Fig. 1) indicates a. removable sleeve which may be placed around the piston rod 24 and between the hand-wheel 25 and the upper end of air-cylinder 22 whereby, by the operation of the hand-wheel alone, in case of necessity, the arms 13b and 14b may be forced ilpait and the brakes tightened therefore by 27 indicates brackets mounted upon the frame 8 eachhaving a vertical slot 28 at its outer end.

29 indicates slide blocks which are mounted in the slots 28 so as to move vertically therein. Y

30 indicates spiral springs which are seated in the slots 28 and whose upper ends bear upon the lower surfaces of the slide blocks 29. The lower ends of the springs bear upon the lower ends of the slots 29. In the drawings, only one of these slots on the brackets 27 is illustrated,-namely the one upon the side of the press upon which the pneumatically-operated mechanism is mounted.

So far as the bracket, slot, slide block and spring are concerned, the parts on the opposite side of the machine are like thc parts shown in Fig. 1, but not having connected with them the operative parts hereinafter desrribed, and the mounting is like the -mounting of the ordinary tension roller in presses of this kind and needs, it is believed, no further illustration or description.

31 indicates a rod which is slidingly mounted in the bracket 27 upon the side of the press upon which the operative mechanism is mounted so as to move freely longitudinally of itself therein, the upper end of the rod being connected with the slide block 29 on that side of the press.

32 indicates a roller which is journaled in the slide blocks 29, and over which the web 11 passes.

33 indicates a roller mounted in brackets 34 projecting outward from the brackets 27 and below and partially around which the web 11 passes. It will be obvious that any tension upon the web will tend to pull the-roller 32 down against the action of the springs 30,

which, in their-turn, will tend to force the slide.

blocks and hence the roller 32 upward whenever the tension is taken from the web 11, and which operate to constantly force the lroller 32 upward against the downward pressure exterted by the tension of the web.

35 indicates a hub which is journaled on the shaft 36 carried upon the upper end of a bracket 37 extending upward from the frame 8. 38 indicates an arm preferably formed integrally with said hub and pivotally connected at its outer end with the lower end of the rod 31. 39 indicates an arm formed integrally with -said hub and provided with a slot 40 at its outer end.

41A indicates a segment extending downward from and preferably formed integrally with the hub 35. The outer surface of the segment 41 is a circular arc drawn about the center of the shaft 36.

42 indicates a pipe leading from and communicating with any suitable source of compressed air supply (not shown). y

43 indicates a valve which is mounted upon the end of the pipe 42. Thevdetailed construction of thisvalve is shown in Fig. 7, in which 44 indicates the valve easing, containing a tubular valve 45, upon the outer end of the valve stem of which is mounted a hand-lever 46 shown in Fig. 1. The valve casing 44 is provided with openings 47-48Vdiametrically opposite one another, opening 49 disposed at right angles -pipe' 57 connects f ana.; x

- dis osed that? Whiting,thefvalvefthylny be roughtI into-registry ',-thefopenin 474880 les award @pas 50 With one another.

56-57 are pipes screwed into the casing 44 and connecte respectively with the open- The pipe 56, by means of a exible piping 58is connected withv the top of the cylinder 22 above the piston 23. The

with a valve 59. The details of the valve 59 areshow'nin Figs. 5 and 6. 60 indicates a'valve casing which is provided with openings 61-62 preferably arranged at an angle of ninety degrees from degrees apart or at Y tary plug 64.

one another. The pipe 57 is screwed into and opens into the opening 61 and a pipe 63 screws into and opens 1nto the opening 62. 64 indicates the Valve or rotary' plug which ts into the bore ofthe casing 59 and is provided with the central openin 65 andwith two openings 66-67 locate ninety right angles to one another so that they may be brought simultaneously., into partial or complete registry with the .openlngs 61-62, respectively, and which vlead* from the central opening .65 to thevexterior of the valve or plug 64.

In order that the Supply of air which may be admitted vto the openings 66-67 may be varied, I provide a'piston 68 which fits air-tight' into the central boring 65 of the valve or `rotary plug. The piston 68 is movable longitudinally in said o ening, and, by -meansof a piston rod 69,. w ich 1s screw-threaded at its end, and a thumb-nut 70 thereon, the piston 68 may be adjusted longitudinally of the central boring 65 so as to shut 0H more or less of the openings 66--67 therein.

71 indicates an arm or formed integrally with the valve or ro,-

72 indicates a link provided with a turnbuckle 73 which is pivotally connected at its lower end with the arm 71 and at its upper end withthe slot 40 -in thearm 39, whereby, by the rocking of the'vv collar 35,'

the valve 64 ma' be rotated in the casing so as to movefthe 'penings 66-6'7 simultaneously into or out of register with the open- Ain s 61-62.

4 indicates a coupling which is mounted upon the pipe 63 and whlch .is provided with an ordinarypressure gage 75. The lower side of the coupling 74 (see Fig. 1) is pro- T Wth 1al conical [for .thelan'fA age I l' 1 80. indicates 'a collar therefore to move which is secured toopening 7 6 into which 77 onfthe upper end of supported von bearing, as 79. n secured" upon a hreadedfportion ofthe r `d 78.-

ts a conicalvalve arod 78 which is 81 )indicates-a vspiral spring seated upon the l. co118.; 1, 80 and 'thehnderfs'idegof' the coupling 74. and tend- 'bearingatfitsgupper end upon ing'norm'allyto force the rod 7 8 downward sofajtoopena `passage vthrough the opening` 6.

.82 indicates a lever which is pivotally mounted upon' the frame and one en d of whichbears upon the under side ofthecollar 80. The other end vis provided with a roller 83 vwhich bears upon tegrallywith or`secured to the stem of the valve .or rotary therefore tends to constantly keep the roller in engagement with the .surface of the cam 84. he cam. isfso shaped, as is shown` in Figa 1, that when the arm' 71 is rocked upplug 64. The spring 81- a cam 84 formed in- Ward, the roller. 83 will travel along the surface of the cam which bears toward the center of the cam,

and will be permitted slightly upward thus permitting the spring 8l vto move the stem 78 downward and open the opening 76'to permit the escape of air.

are in the position shown in Fig. 1, the roller When the parts is on the circular portion of the surface of the cam 84and the valve"77 is closed, and

the cam surface is so shaped. that when the arm 71 is parts .will be kept closed.

85 indicates. an arm which is secured upon and preferably formed integrally with the hub of the lever 46 and is provided at its upper end with a roller 86 which` projects inward therefrom.

87 indicates a bellcrank lever having arms 87a-87b. The arm 87a is adapted when swung to the right in Fig. 1 in the manner hereinafter described to engage the roller 86 on arm 85, and move it to the right in rocked downwardv in 1. the l Fig. 1, rotating the Valve 45 correspondas more fully described hereinafter, end with a hook of the arm con-v lngly, and is provided at its lower 88, whlch, as the swinging tinues, wi1l engage the rol e further motion. The other arm 87b of the bellcrank lever 87 is provided at its outerl end with a roller 89 which is adapted to bear -uponthe curved surface .of the segment 4l,

and is held in constant engagement pressing a ainst the same by the spring 90 on the hub 0% the bellcrank lever and mounted in the well-known manner. The spring tends to rock the bellcrank lever to the right in Fig. 1, tohold the roller 89 in constant engagement with the curved surface of the -segment 41, and when the roller is freed from engagement by asulicient movement to the right r 86 and prevent of the segment 41 by the operation herein` after described, operates to rock the bell'- crank lever 87 ,so as to throw the arm 37a into contact with the roller 86 as above described.

91 indicates a curved rack which is supported onthe bracket 37 behind the handlever 46 and is provided with a number of openings 92 which are adapted, to be engaged by a pin'93 in the lever 46 so as to removably set it at any desired position.

By means of a flexible pipe 94, the coupling 74.is connected with the lower end of the air-cylinder 22 below the piston 23 so that when the valves are suitably opened as hereinafter described, compressed air passing through the valve into the pipe 63 may enter the cylinder below the piston. The purpose of the flexible pipes 94 and 58m is to permit the lateral movement of the brake mechanism and cylinder toward and away from the frame of the press, as above described! The operation of the above-described devices is as follows z-In the drawings the several parts are in the positions in which they are when the web is running through the press under normal conditions. As is best shown 1n Fig. 1,under these conditions,

the roller-32 with the slide blocks 29 is in approximately the position shown in said figure, and the valves are in the positions shown in the several detail gures of the valves. The valve 43 and its several openings are in the positions shown in Fig. 7, in which, as will be seen by reference to that figure, the openings 54 and 47 are in partial register, and the openings 53 and 49 are in partial register. The recess 55 connects the opening 48 with the opening 50 into 'the air.v

The compressed air therefore passing from the pipe 42 passes through openings 47, 54, 53 and 49 into pipe 57 from which it passes to the valve 59. This valve 59 is in the position shown in Fig. 5, in which the openings 61 and 66 are in partial register and the openings 67 and 62 are in partial register so as to permit the air to pass. through the valve into the pipe 63. The conical valve 77 is closed. The air passes therefore into the bottom of the cylinder 22, and, forcing the piston upward and the cylinder correspondingly downward, spreads the arms 13b and 14", bringing together the brake jaws 13a and 14a and braking the paper roll sufficiently to give it a proper tension. The pressure above the piston is of course relieved by the fact that the air is free to pass from the pipe 56 through opening 48 in the valve 43 and by means of the recess 55 out through the discharge port or opening 50, thus having atmospheric pressure only above the piston. The .amount of pressure which is glven to the piston and consequently the normal tension which it is desired to put upon the web may be varied by moving the handle 46 so as to correspondingly turn the valve plug 45 in valve 43 so as to bring the .openings 54--47 and openings 53-49-more or less into register permitting more or less supply of compressed air to pass into the pipe 57. If now for any reason the tension upon the web becomes too great, the pull upon the web will cause the slide blocks 29 to'descend, which, forcing down the rod 31 and arm 38, will correspondingly raise the arm 39. This will lift the arm 71 of the valve 59, and, moving the valve plug 64 (see Fig. 5) in a contra-clockwise direction, will diminish, or if need be entirely shut-oil' the registration between the openings 61 and 66 and the openings 62 and 67, thereby diminishing the pressure below the piston and relaxing the braking power thereby relieving the tension. This same contra clockwise movement of the valve willrotate the cam 84 in the same direction, and the roller 83,

riding down the inclined cam, will rock the arm 82 up and consequently allow the spring 81 to force the rod 71 downward opening the valve 77 and permitting the air to escape below the piston. As soon as this tension upon the web is relaxed below the normal desired tension, the effect will be to relieve the downward pressure upon the slideblocks 29, whereupon the springs will cause them to rise, lifting the connecting rod 31 and arm 38, depressing the arm 39 ,thereby rotating the valve plug 64 clockwise, which will cause a greater degree of registration between the openings 61 and 66 and the openings 62 and 67, causing a greater amount of air to pass into the cylinder below the piston and thereby increasing the tension upon the web. It will thus be seen that while the press is running and the web is running constantly, after having been once set at the normal desired tension, the apparatus is self-regulating as to` the tensionA upon the web and the tension will be kept constant.

If at any time there should break of the web, the downward pressure upon the slide-blocks 29 will of course be instantly taken away. This will cause the blocks 29 to ily quickly upward to the full` limt of their movement under the pressure of the springs, which will rock the arm 38 up instantly, will throw the arm 39 down, and will instantly rotate the valve 64 clockwise opening the valve 64 completely,- that is to say, will cause the openings 614-66 be a sudden y and 62-67 to come into complete registry and allow a full flow of air below the piston. At the same time the segment 41 will pass beyond the roll 89 which will permit the arm 871 of the bellcrank lever 87 to be rocked instantly upward under the influence the of the spring 90, swinging the arm 87 'quickly to the right in Fig. 1. cause the arm 87l This will to engage the roll 86 on the "lever `85 'and will rock the valve plug 45 of valve 43 instantly clockwise, bringing the openings 47-54 full supply. of compressed air to pass into the lower valve 59; This will cause aninstant full power of the brake to be put upon aper roll, instantly causing it to stop its flurther rotation under its own momentum.- This is a short and quick action. As the lever 87 a moves still farther in its rapid movement to the right, it urges the arm 85 still farther to the right, closing valve 43 air-through the pipe 42. As this movement'continues, the hook 88 engages the'roller 486 and-the parts-are locked against further movement. The paper roll is thus instantly lbraked in case of'breakage of the web.

In case at anytime it isdesired tor-spreadv the brakes so as -to entirely relieve their' pressure and spread them from the brake pulley, the lever 46 1s swung to the left.

i This rotates the plug 45 in va ve 43 contranect the opening 49 A discharge port50. It will clockwise, and brings the openings 47-53 and 48-52 into register, which degree of registration is of course dependent upon the amount/of movement given to' the arm 46 in swinging to the left. This causes the air to flow from the pipe 42 directly across the valve 43 into the pipe 56, above the piston, tending to move the piston down and the cylinder up and rock the brake arms apart. This contra-clockwise motion of the valve plug 45 has of course at once brought the openings 47-54 and 5B-49 out of register and thessame movement will have brought the 'recess 55 in such a position as to conintojwhich fpipe 57 opens with the discharge port or opening 50. This saine movement, if-for any reason this vshould bevdone while the press is moving and the web is being pulled through the press, will -ofcourse relax the tension on the web, which will cause the slide blocks 29 to be moved upward, and, therefore, through the above-described connections, the valve 64 will be rotated clockwise, which brings the openings 62-67 and 61-66 into more complete registry according to the upward movement' of the slide blocks, which permits the air to escape .more readily from` the bottom of the cylinder through the various pi ings, up through the valve 60, up throng the pipe 57, and out through the not, however, be at all usual to swing. the hand-lever46 vto the left while the machinery is' in motion. For instance, when the press stops, the motion is slowed down gradually and the tension upon the web will-be preserved during and 53-49 into complete registry for a moment of time, allowing a passage from the the vmder 1n a manner 'The pressure gage the slowing -downand while'i'theress remalns stopped, and therefore fit -not be necessary,\when the press isfsto'p ed.- for any ordinary reason other thanth v reakage of the web to operate the hand-lever. to shut oile the supply of air below the piston when the press ls'stopped temporarily" and in the ordmary course ofitsrunning for other reasons than for placing a new roll of aper 1n place of the old one. when --t-h'e' ol has been practically exhausted. f

en it is desired paper and spindle in place of the old` roll which has been substantially used up,-the press is of course brought to a" stop :with what is left of the old web still at its normal tension. Before this old. remove the former spindle and insert a new spindle, the hand-lever 46 will be moved to the left enough to rotate the valve 43 contraclockwise asuiiicient amount to close the ipe 42 into the thus shuttingzoff the air-pressure be piston. o The 'web across, which will of course at once relieve the tension and the slide blocks will move up, but no effect will be produced below the piston because the compressed air supply has been shut oif. l moved farther to the left, will still keep. the openings connecting the pipes 42 and 57 c osed, but will turn the valve plug 45 a sufficient amountto let the compressed air. pass through theopenings 4153,52, 48 into the pipe 56 above the. iston, whlch will force it down moving tlie cylinder correspondingly up and separating the brake jaws, the air below the piston passing out into the atmosphere as abovev described. The old rollwith its spindle may be then removed, the new roll substituted, and its lead end joined to the tail end of the former roll in the usual manner, and the parts being restoredl to the normal condition when press is set in operation, the desired tension will again be provided and automatically maintained as above set forth.

In caseA it is desired to put an extra amount of brake upon the roll, the arm 46 is moved to the right. This limited movement of the valve plug 45 in clockwise direction will ofcourse admit more air into the lower valve 59 and hence below the cylwhich will be readily understood from what has been said above without further descri tion. L p

g5, with the safety va'lve 77, operates also to automatically regulate any difference that may occur between a pressure in excess of what is needed in the` supply pipe 42 and the cylinder 22. The pressure gage indicates the pressure in the pipe, and the safety valve may be set to the desired pressure, which isv indicated ow the roll l to place anewjroll ofv y 8o web is severed to ipe 57, a

may then be broken The hand-lever being spring 81 so in order that too great by the ressure gage P not be admitted to the the conical valve 77. For instance, su posing that fifty pounds of 'air pressure s ould for any reason be supplied through the supply pipe 42 and only forty pounds pressure were required in the cylinder 22,-the upper nut 80 on the rod 78 would be moved to regulate the tension of the spring 81 Vso that as long as only forty pounds pressure wasin the cylinder 22 the valve would remain closed, but should a pressure in excess o forty pounds be admitted to the cylinder the safety valve would open cess pressure to escape. Should a greater amount of pressure'than the fortypounds be required in the cylinder, the upper nut would be moved upward, tightening the that the safety valve would open at a higher pressure. f

What I claim as my invention and desire to secure by Letters Patent is 1. The combination with a roll-spindle adapted to carry a web-roll and brake mechanism for said-roll-spindle, of brake-operating mechanism adapted to be operated by compressed air, means for supplying compressed air to said brake-operating mechanism, and mechanism automatically operated by the tension of the web to control the supply of compressed air to said brake-operating mechanism.

2. The combination with a roll-spindle, a

l web-roll thereon and brake mechanism for said roll-spindle, of a cylinder and piston connected, respectively, with the members of said brake mechanism, means for supplying compressed air to said cylinder to operate said brake mechanism, and means automatid above, the threaded rod.

and allow the exically operated by the tension of the web to control' the supply of air to said cylinder.

3. The combination with a roll spindle adapted to carry a web anism for saidroll spindle, brake operating mechanism, to rconvey; compressed air, connections between said pipe and said pneumatic brake operating mechanism,.valves in said connectlons, and means operated by the tension upon said web to automatically operate said valves to supply a greater or less amount of compressed air to said brake operating mechanism. Y l

4. The combination with a roll spindle, a web roll thereon, and braking mechanism for said roll spindle, of a cylinder and piston connected respectively with the members of said brake mechanism, a pipe adapted to convey compressed air, connections between said pipe and said cylinder, valves in said connections, and mechanism operated by the tension upon said web to operate said valves and control the movement of said piston and cylinder. l

5. The combination with a roll spindle, a web roll thereon, brake mechanism Jfor said roll spindle, and pneumatic brake operating mechanism, of piping adapted to supply compressed air to said pneumatic brake operating mechanism, valve mechanism in said piping adapted by its movement to control the supply of air to said pneumatic brake operating mechanism, mechanism connected with said valves and operated by the tension upon the web to automatically operate said valves and control said mechanism to preserve a constant tension upon said web, and mechanism adapted upon the breaking of said web to automaticallyincrease the supply of air to lsaid pneumatic brakeoperating mechanism and forcibly apply said brake to said -roll s indle.

' SAMUEL G. GrV SS.

of pneumatic a pipe 'adapted Witnesses: ,Y C. E. PICKARD,

f ALBERT H. ADAMS.,Y

roll and brake mech- C brake 'operating y

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