US 1409659 A
Description (OCR text may contain errors)
APPLICATION man FEB.28. 192
Patented Mar. 14, 1922.
UNITED STATES PATENT OFFICE.
BASIL BREWER, on CLEVELAND, 01110.
Specification of Iietters Patent. Pate t d Ma 1 1922 Application filed lebruary 28, 1921. Serial No; 48,390.
ported, one above the other, on pairs of substantially horizontal roll supporting arms, with the mandrels of the rolls resting in semi-circular bearings supported in fixed position on the arms.
With these presses it is necessary that the press be stopped when it is desired to substitute a new or unused roll for one from which the paper has been substantially exhausted. Tn this replacing process the new roll is elevated by hoisting apparatus,
andv then allowed to rest on the outer portions of the roll supporting arms. Then when the major portion of the paper has been unwound from the roll being used, the press is stopped, after which the paper is severed from what has been termed the used roll, brought back to and pasted onto the press by reducing the time and labor required to replace a used roll with a new roll. lvlore particularly, it is the aim of the invention to provide means whereby this can be accomplished without stopping the press.
Brieiiv stated, byl'he present invention a new roll can be placed .on what may be termed the loading station. and Whenit is desired to transfer the feed of paper from the used roll to the new roll, the new roll is moved forwardly until its outermost layer can be attached or pasted tothe paper or so called web feeding from the used .roll,
preferably by coming in contact with the same as it passes about thetension roll, and as soon as the feed takes place from both rolls simultaneously the web fed from the used roll can be severed, after which the useclroll can be removed from the press and the new roll shifted forwardly along the arms,.the change of feed from one roll to the other taking place without stopping the press.
Inaccomplishing this result I provide on the roll supporting arms traveling mandrel bearings and shifting means therefor which are believed to be entirely new in this art,
and I further provide, in order to render effective the attachment of the paper of the new roll onto the traveling web passing from the used roll, an improved way of supporting the tension roll about which the Web passes, the same being so mounted that thenew roll can be brought up against it so as to form a backing which will enable the outermost-layer of the new roll to be at tached to the-traveling web passing from the used roll. and may then be swung downward so that the new roll can be advanced forwardly of the tension roll to its normal position of feed.
The invention resides in the above method and structural features, and also in various details, and combinations and arrangements of parts by which the invention may be embodied in a practical and efiicientmeohanism.
In the accompanying sheet of drawings showing an efficient embodiment of the invention, Fig; 1 is a side view of the mechanism which is provided for each pair of roll supporting arms, the major portion of the mechanism shown in this figure being duplicated'in the companion arm which is not shown; Fig. 2 is a view looking toward the right of Fig. 1 or toward the outer ends of the arms, one of the arms being shown in section; and Fig. 3 is a view similar to Fig. 1 on a reduced scale, showing how the invention is duplicated for each pair of roll supporting arms.
Referring now to the drawings, 10 represents a vertical column, two of which are provided at'the rear end of a multiple roll press of the upright deck-type. To these columns 10. are attached special roll supporting arms 11, which are arranged in pairs, as is customary, with the pairs one above the other and projecting horizontally rearward from the press. The upper portions of each pair of arms 11 are in this instancetrough-shaped, as shown at 11, and journaled for rotation therein and extending longitudinally thereof are feed screws 12, for hearing blocks 13,
pair of which (one on each arm) are adapted to support the mandrel 14: of the paper roll 15. Each bearing block 13 has a rectangular groove on its lower face which fits down onto the trough-shaped top "11 ot the arm 11, as best shown in Fig. 2, the
bearing block resting on the topof thearm and having at its sides downwardly extending flanges which overlap slightly the sides of the arm. Secured to the lower side of .each bearing block is a halt nut 14 which engages the threads of the feed'screw 12 same or synchronous movements imparted to them. T o accomplish this, one of the two arms (or if desired, each arm) is provided with a hand wheel 16 which is connected by spiral gearing or other suitable gearing designated as a whole by the reference character 1'7,'to the associated screw12, and the two screws are geared together so that the movement of one is imparted to the other. In this instancethe inner ends of the screws are connected by bevel gearing 18 to short upright shafts 19 which in turn are connectedby bevel gearing 20 to a horizontal crossshaitQl. In the drawings only one set of 1 gears 18, one upright shaft 10, and one set of gears 20 are shown in Fig. 1, but it will be understoodth at the part of the movement transmitting mechanism shown in Fig. 1
V will be duplicated on the other side of the press. It will beunderstood also that the mechanism just described will 'be duplicated tor eachpair of roll supporting arms.
'ltwilhbe seenfrom the machine so far described, that a pair of bearing blocks 13 ran be placed down on the arms with the half nuts'on the lower faces oi the blocks in operative engagement with the feed screws -12, and that the bearing blocks can when desired. be lifted from the arms out of operative engagement with the feed screws. It
will be apparent also, that when the mandrel '14, carrying'anewroll 15 is lowered into place into the semi-circular or upright facing bearing-portions of a pair of bearing blocks supported on the two arms near their outer ends, with the rear'ends of the blocks engaging positioning abutmentsf22 on the arms, the bearing blocks on the two arms will be directly opposite each other. This position of the bearing blocks may be termed the loading position, for the bearing blocks will be placed in thisposition prior to receiving a new roll of paper. It will be apparent also, that when the roll is supported on the bearing blocks positioned as just stated, both bearing blocks may be shifted torwardly along the arms, and the same movement will be imparted to both bearing blocks by turning the hand wheel.
.It is desirable that a certain resistance be applied to the mandrel 14: of the paper 'roll so as to avoid liability of the roll attimes running too fast. To accomplish this 1 provide on one of the bearing blocks 13 (in this instance on the bearing block shown at the left hand side of Fig. 2) a bracket 23, carrying a pair of adjustable brake shoes. 24: adapted to frictionally engage a suitable friction. device preferably in the form of a V-shaped drum or wheel 25 carried by the mandrel.
- In printing presses of this type, the web passes from a paper roll around a tension roll supported by the arms in a position at the rear of the line at which the web leaves the paper roll, so that the web on leaving the roll passes rearwardly a'short distance around the tension roll, and then forwardly into the press. Sometimes these tension rolls are supported in fixed bearings, but generally the'bearings are yieldingly supported and capable of slight movement in slots, the pull of the web being resisted by springs so that an'evcn tension may be maintained on the web to compensate for irregularities in the shape of the roll. To render my impro 'ements most effective I have provided a new mounting for the tension roll which will now be described. 7
The tension roll, one of which is provided for each pair of roll supporting arms 11, is shown at 26. The ends of the shaft or mandrel supporting this roll are supported in bearings 27, each capable of a slightlongitudinal movement which is resisted by a spring 28, in a slot 29 in an arm 300i a bellcrank 31 pivoted on the outer side of the arm 11 one pin 32, it being understood that sim ilar bell'crank mountings for both ends of the tension roll shaft or mandrel are provided on each pair of roll supporting arms 11. Each bell crank 3]. has relatively'short upstanding a'rm 33, and the rocking movement ofthe bell-crank is yieldingly' resisted by a spring 34 surroundinga rod 35 passing through fan abutment 36 connected to the arm "so that it may swivel or turn so as to adjust itself to the swinging of the bellcrank. On the outerend of the rod 35 is a nut37 which isadjustable and serves as a stop or abutment which determines the normal position of the tension roll 26.
In Fig. 1 let A represent the normal feeding position of the mandrel, and a what may be termed the used roll from which the paper has been almost exhausted, the larger circle designated. a concentric with a representing the original size of roll a, although it will be understood, of course, that the rolls of paper supplied to a press are by no means uniform in diameter; also let B represent the mandrel supporting a new paper roll I), the mandrel B and roll I) being in what has previously been termed the loading position. B represents the position of the mandrel, and 7) the position of the roll when the mandrel and roll are first hoisted onto the arms, the rear -ends terminating in the abutments 22 previously referred to, which abutments are engaged with the bearing blocks 13 when the latter are in loading position, as already stated. These rails just referred to, are flush with the top surface of the bearing blocks so that a mandrel can be rolled forward along the rails at the rear ends of the arms onto the bearing blocks, and then into the semi-circular bearings on the latter. Before the roll 6 is hoisted onto the roll supporting arms and moved forward to the loading station, the outer surface thereof is provided with a suitable adhesive in the form of a band extended from one end of the roll to the other. It will be noted also from Fig. 1 that the outer surface or periphery of the roll Z) at the loading station is a short distance away from, and at the rear of the tension roll 26. the distance separating the tension roll and the paper roll depending upon the initial diameter of the paper roll, however, that shown in Fig. 1 and designated by the circle Z) representing a roll of maximum diameter.
lVhcn the paper has been substantially exhausted from roll a, but while the paper web designated lV is still feeding from the roll a around the tension roll 26 which normally lies at the rear of the roll a, but forwardly of and slightly above the lower part of the roll I), the operator will transfer the feed from roll a to the roll 5 without stopping the press, in the following manner. He will turn the hand wheel 16 and move both rolls forwardly until rollb bears against the tension roll, or rather against the web which is passing from roll (4 around the ten-' sion roll, but just before the roll engages the traveling web on the tension roll, the roll 7) is spun by hand or otherwise so as to give it a peripheral movement corresponding nearly to the linear feed of the web W. As soon as the strip of adhesive on roll 7) comes in contact with the web the paper on roll 7) sticks to the web, and for a brief time the paper is fed forwardly from both rolls.
This attaching of the paper from roll 1) to the web WV passing from roll a is rendered possible by the backing afforded by the tension roll, this making it possible to press the roll 6 against the web with suflicient pressure toefi'ectively attach the paper of roll to the web.
As soon as the paper begins to feed from roll 6 the operator will sever the paper or web extending from the practically used roll a, whereupon the feed takes place only from roll I).
In moving the roll 1) forward until it engages the web surrounding the tension roll as just explained, the bearing blocks supporting the mandrel of roll a. are preferably at the same time shifted forwardly, for it is desirable that the position of both rolls be under the full control of the operator until the feed has been transferred from roll a to roll 0 and the paper has been severed from roll a. As soon as this is done, it is no longer necessary that the forward pair of bearing blocks be capable of further actuation by the screws, and usually the length of the threaded portions of the screws is such that after the feed has been transferred from the forward roll to the rear roll, any further actuation of the screws, at least the actuation to any material extent will cause the half'nuts carried by the forward pair of bearing blocks to ride off the threaded portions of the screws.
As soon as the web is feeding from the rear-roll .7), the roll will be moved forwardly by the screws, at least until the lowermost portion of the roll passes forwardly beyond the tension roll, for in practice it is desired that the web engage a greater portion of the surface of the tension roll than it engages when the center of the paper roll is at the rear of the tension roll. In thus moving the roll forwardly beyond the tension roll the latter is, of course, pressed downward, the long bell-crank arms then swinging downward to permit this movement, and as the paper roll passes forwardly of the tension roll, the swinging of the bellcranks under the action of the springs is such as to again elevate the tension roll. It is for this purpose of permitting the tension roll to be lowered to permit the paper roll to be moved past the tension roll and subsequently elevated automatically as the paper roll moves past it that this special mounting of the tension roll is provided.
As soon as the paper roll has been moved forwardly a sufficient distance beyond the tension roll, the operator will lift the mandrel A and the unused portion of rolla out from the bearing blocks, and swing them back over the roll I) out of the press. 'The bearing blocks previously supporting the mandrel and the used roll can then be lifted off the arms for use with the roll next to be V supplied, When the used roll'has been re-- moved, as just stated, the roll can be then 3 moved forward to normal feeding position previously occupied by roll a. i
As before stated, with this mechanism and process the feed is transferred from the forward roll to the rear roll without stopping the press. However, I now deem it ad visable that the speed of the press be slowed down somewhat in transferring the feed from one roll to the other, but theslowing. of the press need be for a very short period.
On the other hand it may not be necessary to even reduce the speed of the press to effect the transfer of feed, but .whether or not the speed of the pressis reduced, with the present improvements the output of the press is greatlyincreased, particularly during the rush periods when the frequent stop-.
ping of the press to renew the rolls, as at present, greatly restricts the output.
While I have shown only one embodiment of the invention, I do not desireto be confined tothe precise details or arrangements shown, as other ways of carrying out the principle of the invention may be devised, and I aim, therefore, in my claims to cover all modifications which do not involve a de parture from the spirit and scope of my invention as recited in the appended claims;
Having described my invention, I claim: 1. In a printing press, a pan-of roll sup.-
. )ortin arms alon whicha roll of I a )er is adapted to bemoved, in combination with a tension roll around which the web normally passes, said roll being movably mounted and having'a range of movement such that it may be displaced vertically a sufficient dis+ tance to permit a new paper roll to be moved forwardly past the same.
2. In a printing press, a pair of roll supporting arms along which a roll of paper is adapted to be moved, in combination with a tension roll around which the web normally passes, and means for supporting the tension roll so that i it may be displaced vertically out of the path of an inwardly traveling paper roll and may later be moved to the rear of the paper roll.
3. In-a printing press, a pair of rollsupporting arms along which a roll of paper mally passes, and means for supporting the tension roll so that it may swing'with a vertical movement pass it.
to permit the paper roll to -5'..In a printing press, pair of roll supporting arms alongwhich a roll of paper is adapted to be moved; a ;tension'roll about which the web fed from the paper is adapted to pass, and yieldingly held swingingmembers supporting the tension roll whereby by the pressure of the paperroll the tension roll dapte'dto bemoved, in combination with a tension roll 'movably mounted so that when engaged by; the'paper roll it will move downward and then upward to the rear of the paper roll.
7. In a printing'press, apair of roll supporting arms along which a roll of paper is adapted to be moved, in combination with a tensionroll, and means forsupporting the tension roll so that it may be swung downward to permit the paper roll to pass it.
8. In a printing press, a pair of roll sup porting arms along which a roll of paper is adapted tobe moved,; a tension roll about which the web fed fromthe paper roll is adapted to-pass, and yieldingly held swinging members supporting the tension roll whereby by the pressure of the paper roll the tension roll may'swing downward so as toqpermit the paper roll to pass it.
9. In a nintingpresma pair of roll snpporting arms havlng means for receiving and simultaneously feeding forward a pair of supporting blocks for the roll, in combination with a tension roll'and mounting for the tension roll whiclrpermits the latter to swing downward out of the path of the tension roll asthe same is moved forwardly.
10. In a printing press having means for supporting rolls of paper and having a tension roll about which the paper web nor mally passes, the method of transferring the feed from a new roll to a used roll which comprises moving the new roll until the periphery thereofcontacts withthe web passing about the tension roll so that it maybe caused to adhere to said web. 11. The method of transferring the feed of paper from one roll to another in a press having provision, for supporting a new roll and a used roll, which comprises 'rnoving one roll toward the other until the periphery of the new roll contacts with the paper feeding from the used roll. and becomes attached thereto. a
'12. The method of transferrin the feed of paper from one roll to anotherin a press. havingprovision for supporting a new roll as well as a used roll, which comprisesmow ing one roll toward the. other, with a linear movement, and causing its periphery to be come'attached to the webfeeding fromthe used roll.
13. The method of transferring the feed of paper from one roll to another in a press having provision for supporting a pair of rolls one at the rear of the other, which coniprises moving the rear roll inwardly toward the inner roll with a substantially linear movement until the periphery engages and becomes attached to the web feeding from the forward roll.
M. The method of transferring the feed of paper from one roll to another in a press having provision for supporting a new roll and a used roll, which comprises moving one roll relative to the other until the periphery thereof contacts with the web fed from the used roll, and causing the periphery of the new roll to be pressed against and attached-to said web with backing afforded by a tension roll about which the web normally passes.
15. The method of transferring the feed of paper from one roll to another in a press having provision for supporting a pair of rolls one at the rear of the other, which comprises feeding the rear roll forwardly until the periphery thereof contacts with the web where it passes about a tension roll as it is fed from the forward roll and causing the periphery of the rear roll to be pressed against and attached to said web with the backing afforded by the tension roll, and feeding the rear roll forwardly until the center of the roll is beyond the tension roll.
16. The method of transferring the feed of paper from one roll to another in a press having a tension roll around which the web normally passes, which comprises causing the new roll and the tension roll to be moved relatively until the periphery of the new roll engages the web feeding around the tension roll and becomes attached thereto.