USRE20912E - Roll changer for printing- presses - Google Patents

Description

Nov. \8, 1938. B. (3. WHITE Re. 20,912

ROLL CHANGER FOR PRINTING PRESSES Original Filed June 20, 1923 14 Sheets-Sheet 1 INVENTOR BRUCE CLARK WHITE, 4 I DECEASED, R. HOE 8. CO., INC., ASSIGNEE,

ATTORNEYS Nov. 8, 1938. B. (3. WHITE Re. 20,912

ROLL CHANGER FOR PRINTING PRESSES Original Filed June 20, 1923 14 Sheets-Sheet 2 INVENTOR' BRUCE CLARK WHITE, DECEASED, R. HQE & CO. INC.,. ASSIGNEE,

ATTORNEYS Nov. s, 1938. B. c. WHITE 20,912

ROLL CHANGER F CR PRINTINGVPRESSES Original Fi led June 20, 1923 14 Sheets-Sheet 3 INVENTOR BRUCE CLARK WHITE,

- DECEASED,

R. HOE a. CO., INC, ASSIGNEE ATTORNE YS Nov. 8, 1938. B. c. WHITE 20,912

.ROL L CHANGER FOR PRINTING PRESSES Original Filed June 20, 1923 14 Sheets-Sheet 4 INVENTOR BRUCE CLARK WHITE, DECEASED, R. HOE & cO.,|Nc., ASSIGNEE,

ATTORNEYS Nov. s, 1938. a Q WHITE Re. 20,912

ROLL CHANGER FOR PRINTING PRESSES Original Filed June 20, 1923 l4 Sheets-Sheet 5 INVENTOR BRUCE CLARK WHITE, DECEASED, R. HOE a. co., INC.,ASSIGNEE,

ATTORNEYS Nov. 8, 1938." B, c. WHITE 20,912

ROLL CHANGER FOR PRINTING PRESSES Original Filed June 20, 1923 14 Sheets-Sheet 6 INVENTOR BRUCE CLARK WHITE,

- DECEASED,

R. HOE a. (20., |Nc., ASSIGNEE ATTORNEYS Nov. 8, 1938. B. c. WHITE ROLL CHANGER FOR PRINTING PRESSES Original Filed June 20, 1923 14 Sheets-Sheet 7 INVENTOR BRUCE CLARK WHITE. DECEASED, R. HOE a. co., INC., ASSIGNEE,

ATTORNEYS Nov. 8, 1938. B. (3. WHITE 20,912

' ROLL CHANGER FOR PRINTING PRESSES Original Filed June 20, 1923 14 Sheets-Sheet 8 Q l5 1% {"1 -27L.

l Hi I I -50 3 42 36 INVENTOR BRUCE CLARK WHITE, DECEASED.

R. HOE a. co., INC, ASSIGNEE,

ATTORNEYS Nov. 8,1938. B. c. WHITE Re. 20,912 I ROLL CHANGER FOR PRiNTING PRESSES Original Filed June 20, 1923 14 Sheets-Sheet 9 INVENTOR BRUCE CLARK WHITE,

Y ECEASED, R. HOE CO., INC., ASSIGNEE,

ATTORNEYS Nov. s, 1938; B. c. WHlTE Re. 20,912

ROLL CHANGER FOR PRINTING PRESSES Original Filed June 20, 1925 14 Sheets-Sheet 10 INVENTOR BRUCE CLARK WHITE, DECEASED,

R. HO)? CO, INC., ASSIGNEE,

ATTORNEYS Nov. 8, 1938.

ROLL CHANGER FOR PRINTING PRESSES Original Filed June 20, 1923 WHITE 14 Sheets-Sheet ll INVENTOR BRUCE CLARK WHITE, DECEASED,

R. HOE

a co, ASVSIGNEE,

ATTORNEYS B. c. WHITE Nov. 8, 1938.

ROLL CHANGER FOR PRINTING PRESSES l4 sheets shee't'l2 Original Filed June 20, 1923 I p I I I I I I I I I I\ I I J I INVENTOR BRUCE CLARK WHITE, DECEASED,

NOV. 8, 1938. 3 c WHITE Re. 20,912

ROLL CHANGER FOR PRINTING PRESSES Original Filed June 20', 1923 14 Sheets-Sheet l5 IIIIIIIIIIIII gwwwwwvmmm INVENTOR BRUCE CLARK WHITE, DECEASED,

. R. HOE a. 1co., INC., ASSIGNEE, Q ,0, $7

ATTORNEYS Nov. 8, 1938.

B. 0. WHITE Re. 20,912

ROLL CHANGER FOR PRINTING PRESSES Original Filed June 20, 192$ 14 Sheets-Sheet l4 INVENTOR BRUCE CLARK WHITE, DECEASED. R. HOE a. CO., INC.,A5 IGNEE,

ATTORNEYS Reissued Nov. 8,

UNITED STATES ROLL CHANGER FOR PRINTING PBESSES Bruce C. White, deceased, late oi New York, N. Y., by Irving Trust Company, New York, N. Y., trustee for and assignor to R. Hoe & 00., Inc., New York, N. Y., a corporation of New York original No. 1,855,503, dated April 26, 1932, Se-

rial No. 646,592, June 20, 1923.

Application for reissue April 4,1934, Serial No. 719,961

Figs. 9 and 10 are details of the outer traction This invention relates to that class oi printing presses wherein the paper to be printed is in the form of webs drawn from rolls through the machine.

- The principal objects of the invention are'to facilitate the supply of the rolls of paper and to insure the webs of successive rolls automatically assuming such connected relation that the paper from a plurality of succeeding rolls will be fed to the printing machine in a continuous web. without necessarily involving the interruption of the printing operation. v

Another object of the invention is to provide improved means for speeding up and controlling the speed of the fresh rolls, and the speed and stoppage of the expiring rolls independently.

Another object of the invention is to provide a simple, semi-automatic control for the paster and web severingudevices.

Another object of the invention an automatic means for marking the particular folded papers or units of the product which contain the pasted or doubled portion of any web 25 which goes to make up the product.

Other objects of the invention are to provide roll-changermechanisms which can be fitted to a printing press in place of the usual paper roll brackets, also means for facilitating the. handling an iron core'tube. The foregoing and other objects of the invention will appear in the machine herein described 35 and claimed and shown in the accompanying drawings, in which:

Figure 1 is a vertical section on the roll-changing devices as adapted to a three-roll press, each deck being shown with the paper rolls in a difierent position.

Fig. 2 is a side elevation of the operating. or front side of the roll-changer. Fig. 3 is a side elevation of the driving or rear side of the roll-changer.

Fig. 4 is a horizontal section on line l4 of Fig. l.

Fig. 5 is a horizontal section on line 55, of Fig. 1.

Fig. 6 isa detail on a larger scale than that so of the preceding figures of the traction belts.

Fig. '7 is a section of same on line 'Il of Fig. 6.

Fig. 8 is an enlarged section of the drivingshaft, pulley and journal bearing of the traction 55 device.

is to provide of the fresh roll, whether of full or half width, and adapted to rolls having either a paper or belt, pulleys and journal bearings.

Fig. 11 is a detail section of the control cylinder for the speed up traction belt on line |IH of Fig. 12.

Fig. 12 is a side elevation partly in section along line l2|'2 of Fig. 11, showing the same parts as in Fig. 11.

7 Fig.-13 is a section on line l3--|3 of Fig. 15 showing the reversible roll holder drive. I

Fig. 14 is a vertical section on line l4l4 of Fig. 15.

Fig'. 15,is a horizontal section on line |5-|5 ofFig. 13.

Fig. 16 is a detail section on line l 6-lli of Fig. 17, showing the clutch control eccentrics. Fig. 17 is a side elevation of the clutch control levers, which with the preceding four figures relate to the traction belt and roll holder drives.

Fig. 18 is a horizontal section on line IB--|8 of Fig. 19 showing one of theroll holders.

Fig. 19 is a vertical section on line l9l9 of Fig. 18.

f Fig. 201s a plan view partly in section on line I8-|8 of Fig. 19 and showing a half width roll of paper with its spindle.

.line 2l--'-2l of Fig. 22.

Fig. 22 is a-section of same on line 22-22 of Fig. 21.

' Fig. 23 is a section of same on line 2323 of Fig. 24.

Fig. 24 is' a section of same on line 2l2l of Fig. 23.

Fig. 25 is a plan view of a full width paper roll showing the normal position of the traction belts and pasted area of the fresh roll.

.Fig. 26 shows the position of a half width roll of paper and its spindle and pasted area when at one side of the center. a

Fig. 2'7 shows the position of a half width roll of paper when centrally located, with a suitable spindle and pasted area.

Fig. 28 is a plan view partly in section on line 28-28 of Fig. showing the paster and severing knife mechanism.

Fig. 29 is a fragmentary plan view of the marker for indicating the position of the pasted papers in the product.

Fig. 30 is a vertical section of paster and its operating mechanism on line 30-30 of Fig. 28.

Fig. 31 is a vertical section through the paster operating cylinder on line 3l-3| of Fig. 28.

Fig. 32 is a detail section on line 30-30 of Fig. 28, showing the marker about to be moved into contact with the paper and in advance of the position shown in Fig. 30.

Fig. 33 is a view similar to Fig. 32 showing the marker and connected parts in the position immediately following that of Fig. 30 and out of marking contact.

Fig. 34 is a front elevation of the lever which .actuates the paster and the clutch coupling of the expiring roll traction belt.

Fig. 35 is a side elevation of same.

Fig. 36 is a horizontal section of same on line Fig. 41 is a section of same on line 39-49 showing the hoisting plug used in connection with a roll spindle.

Fig. 42 shows the plugs in use on a half roll, and Fig. 43 is a diagrammatic partly sectional side elevation of the invention as used with a printing press.

Similar numbers indicate like parts in all the figures.

In theembodiment of the invention disclosed herein A indicates a lower roll-changer, B a middle roll-changer and ,C a top roll-changer approximately as arranged at the end of a threeweb or sextuple printing press.

I indicates a base plate to which are bolted the upright front frame 2, and the upright rear frame 3, also the lower roll'support 4.

The frames are tied together by means of the outer cross ties 5, the middle cross ties 5 and the inner cross ties I. To the outer cross ties 5 are bolted extension brackets 8 for supporting temporarily the fresh paper rolls 9 which may be replaced thereon with the aid of a paper roll hoist of the usual type but 'not shown. Likewise a fresh roll Ill may be placed upon the support 4.

Considering now the lower or A deck, a fresh roll I I has already been rolled inward sufficiently to be secured in the roll holder I2, this roll holder Eeinig shown in the form of a pair of spaced ea s.

Paper is genei illy wound upon an iron pipe or 7 core tube I3, see dotted lines in Figs. 4, 20 and :22. To support and center a fresh roll of paper in the roll holders I2 having first properly positioned it, the taper plugs I4 are forced into both ends of the core tube I3 by means of the screws I5 and hand-wheels I5 having their hearings in the plate I1, see Figs. 18 and 22. A traveling nut I8 having screw threaded engagement with the screw I5 is secured fixedly to the nut-plate I9. The latter is provided with projecting lugs which are free to slide longitudinally in the key- Ways 20 of the holes 2| bored through the heads on opposite sides thereof and near their periphery. Preferably anti-friction ball bearings 22 and 23 are introduced to carry the weight and endwise thrust sustained by the taper plugs I4 which latter are free to rotate in the reels by the rotation of the paper rolls.

The heads I2 are journalled upon the nonrotating centers 24 and are held against endwise movement thereon by means of the flange 25 and collar plate 25. The reel centers 24 are fitted to slide freely endwise in the hubs 21 pro-' jecting inward from the frames 2 and 3, but are prevented from rotating therein by the key plug 28, the flatted inner end of which has sliding engagement in the keyway 29 of the center, thus leaving the latter free to be moved endwise in the frame hubs by means of the screw 30 to which is secured the hand wheel 3|.

- A sprocket wheel 32 is also secured to the screw 39 and has a sprocket chain 33 trained about it and also about a sprocket 34 on each end of a shaft 35, see Fig. 4. By this means the operator in turning either of the hand wheels 3I will rotate both screws 30 in the same direction in a manner to screw both centers 24 and consequently both heads and the rolls of paper mounted therein either to the right or left, as may be desired, in .order to properly introduce the web into the printing elements of the press. The screw 30 has its bearing in a plate 35.

The heads I2 are preferably adjusted to give only suflicient space for the introduction of the paper rolls between them, which latter are of uniform size, hence may be readily positioned and centered. To facilitatethe correct placing of the rolls small anti-friction rollers 31 are let into suitable recesses in the roll support 4 and outer cross ties 5 whereby the fresh roll may be moved easily to the right orleft as required. These rollers 31 are utilized to remove the exhausted rolls laterally from the machine, as will be more fully explained.

The heads I 2 are provided with heavy spur gears and are provided with external'gear-teeth which mesh into toothed pinions 38 keyed to the pinion shaft 39. To the latter is keyed a worm wheel 49. Bearings 4| upon the inner 'cross tie I support the shaft 39, which latter is further supported in a journal 42 in the gear box 43, see Fig. 4.

A vertical worm shaft 44 having a worm 45 formed thereon is journalled-in bearings 45 and 41. The worm'shaft 44 is provided with feathers 48 upon which the double leather faced cone 49 is free to slide vertically. A split collar 50 is clamped into a groove in -the said double cone in'which it is free to turn. The split collar is held from rotation by the stud 5I. The split collar is linked to an eccentric shaft 52, journalled in the cap 53 by links 54. The links engage proiecting trunnions 55 on the split collar and eccentric projections 55 on the shaft 52. The latter is rotated by a curved arm 51 which in turn is connected by a link 58 to one arm 59 of a bell crank 50. The latter is journalled upon a stud 5| and its depending arm 52 is connected byna rod 53 to the operating or front side of the machine.

The arm 51 is notched for a spring 54, see Fig. 14, which tends to hold said arm in any one of three positions, one representing the clutch cone forced upward, one representing it forced downward and one in a middle position.

Above and below the double cone clutch are spur gears 55 and 56 having internal surfaces corresponding with the conical surfaces of the double cone clutch. Said gears are provided with collars 5'! to prevent their endwise movement on the worm shaft upon which they are both free to turn.

58 is a verticaldriving shaft to which is secured a pinion 59 which latter meshes into the lower cone gear 55 and also into an intermediate gear 18 upon the shaft H. The gear 18 also meshes into the upper cone gear 65 whereby the lower "cone gear 66 being driven direct from the shaft 68 will rotate in one direction, while the upper cone gear 65 being driven through an in- ,termediate gear 18 will rotate in the opposite rection.

direction. It follows that if the double cone 48 is thrust upward to engage the gear 65 the worm will be rotated in one direction while if the double cone is forced downward to engage gear 66 the worm will be rotated in the opposite di- If the double clutch cone is retained in mid-position itwill be out of contact with both gears and will not rotate but will hold the worm gear 48, and pinions 38 from rotation and hence lock the heads I2 in any position desired. The

gearing just described is preferably enclosed in' Chain sprockets 83 upon the shafts 82 drive pulleys 85 and 86.

through the pitch chains '84 the chain sprockets 85 secured to the shafts 86. Both the shafts B2 and the shafts 86 are preferably mounted inball bearings. Both shafts terminate in one element of the friction cut-oil couplings 81 and 88 which latter are driven in one direction at a speed corresponding with that of the web.

Extending across the machine from the cut-off couplings are two pulley shafts 88 and 88 for each deck to which are secured the other'friction elements of the cut-off couplings. When the friction elements of the said couplings are brought into contact by means of .the clutch levers 8I and 82 the shafts 88 and 88 will partake of the rotation of the shafts 82 and 86 or either of them. Rods 83 and 84 extend from the clutch levers to the operating or front side of the machine.

Upon the shafts 88 and 88 are fixedly secured Swinging frames 81 and 88 are journalled in the rail pieces 88 and bracket I88 concentric with the journals of the shafts 88 or 88. which latter journals are made preferably in the form of ball bearings. The swing ing frames 81 and 88 carry pulleys HM and I82 which run freely upontheir shafts I83 or I84,

preferably with ball bearing journals thereon.

Said shafts are mounted in adjustable end blocks I86 provided with adjusting screws I85, whereby tension of the belts 588 trained about the pulleys 85 to IN and the belts 58I about the pulleys 86 to I82 may be adjusted.

The outer swinging frame 88 is connected by,

links I85 to arms I88" keyed to the shaft I81, see Fig. 7. The latter is journalled in the rail pieces 88 and also in the front frame2 through which it projects and has keyed to it a segment gear I88. Meshing with the segment gear is a rack-bar I88 which forms, as it extends downward, the piston-rod of a double acting air cylinder 8. At the lower end of this rod is seecured a piston fitted to slide freely in said cylinder. The usual cylinder heads III and H2, with stuffing box I I3, and air pipes Ill with a 4-way valve H5 complete this device, which is designed to raise and lower the pulley frame 88 to lift it bodily out of the path of the incoming fresh roll, or to lower the tractipn belt into contact with said roll to cause it to rotate and to follow .its surface as it unwinds its web and reduces its through the clutch rod 83 and clutch lever 8|."

The latter is provided with an arm II6, formed and adapted tobear against the outside surface of clutch 81, and to act thereon as a friction brake, to quickly stop the shaft 88 when the clutch is released, utilizing the clutch releasing movement of rod 83 to apply the brake II6 as shown in Figs 37 and 38.

The clutch rod 83 is operated by a handle II1, acting between collars II8 on said rod. The handle II1 may be moved by the operator to stop or start the inner traction belts. Additional and automatic means are provided for disconnecting the clutch coupling 81 and applying the brake thereto consisting in a downwardly extending cam-shaped part II8 of the handle 1, in the path of a roller I28, mounted in a forked bearing I2I secured to the inner face of a swinging arm I22, see Figs. 34, 35 and 36. These parts are so arranged that when the arm is in the position shown in full lines in Fig. 34,

the handle may be moved in either direction.

When the arm I22 is lowered to the position shown in dotted line in Fig. 34, the roller I28 will force the lower end of lever II1 inward, thus pulling the rod 83 outward to release the clutch and set the brake H6. The lever I22 is keyed to the pastor shaft I23, which latter extends across the machine and is journalled in bearings I24 secured to cr'oss-tie 1. Keyed to the shaft I23 are arms I25 which latter have projecting lugs I26. These lugs are adapted to engage corresponding lugs I21 formed upon and projecting inwardly from the pasting arms I28.

Extending between the pasting arms is a pasting roller I28 preferably mounted to run upon ball bearings upon the non-rotating shaft I38. A square knife-bar I3I is pivoted upon screwpivots I32, and has secured to it a knife blade I33 of a length corresponding with the width of rods I35 to pivot pins I36 in the arms I25. The

knife I33 is normally out of thepath of the web, which is indicated on Fig. 30 in full lines [31 when in pasting position, and in dottedlines I38 when in normal position. While the, arms I28 are supported by the arms I25 throughthe contact of their lugs I26 and I21 they may be raised and lowered without affecting the relative position of the knife I33. When the pasting roller I28 is lowered to meet the fresh paper roll as in deck A Fig. 1 the arms I28 will stop- Any further rotation of the shaft I23 will continue to swing the arms I25 rearwardly and with them the rods I35 and arms I34, thus, turning the square shaft I31, whose pivots are now stationary, in a manner to swing the knife I33 into and across the path of the web I31 and sever the same. The reverse movement of the shaft I23 first swings the knife back to its normal position I38 then swings the arms I28 with its attached parts upwardly to the position shown in dotted lines in Fig. 30 and as shown in deck B Fig. 1 up out of the way of thepaper roll.

It is not expected nor intended that the poster roller shall apply the web from the expiring roll to the surface of the fresh roll with any reference to the angular position of the pasted area upon the latter, as the rapid rotation of the fresh roll when making a paste at full speed would make such timing-impractical. Any automatic device for timing the pasting movement to the pasted area is likewise complicated and unsatisfactory due to the high speed and varia tion in the diameter of the fresh rolls. It is preferable to make the pasting movement regardless of the position of the pasted place upon the fresh roll and delay the cutting off of the web from the expiring roll until the fresh roll has made, one revolution, thus insuring a proper paste. To accomplish this it is necessary to retard the swing of the knife into the web path which, as has been described, is eifected by the final downward movement of the lever I22.

This lever I22 is actuated by a double acting. air cylinder I40 similar to cylinder IIO already described and provided with the usual piston I4I, piston rod I42, connected by links I43 to the arm I22, top cylinder head I44 with stuffingbox, air piping I45 and a 4-way valve I46 wherewith air pressure may be applied to either side of the piston I to move it up or down.

I4! is an oil dash-cylinder, having a piston I40 connected by a piston rod I40 to the piston rod I42, and having a by-pass pipewith a valve "I50, and another by-pass pipe with its valve I5I whereby the descent of the piston I48 to the level of the valve I5I may berelatively rapid, depending upon the opening of the valve I5I, after which the descent may be asv slow as desired, depending upon the opening of valve I50. This latter movement corresponds with that part of the turning of the shaft I23 after the roller I20 has met the paper roll and while the knife I33 is being swung downward and into the path of the web, and is timed to correspond with one revolution of the paper roll. This ensures that the pasting will occur before the web from the expiring roll has been severed, regardless of the 1 web severing have been accomplished, the 4-way valve I46 will be reversed and the piston will rise and with it the pasting roller and knife to the positions shown in decks B or C, there to remain out of the way until another fresh roll. is to be connected to the running web, when the operation is repeated. The descent of the lever I 22 as already described throws the friction clutch 01 out of engagement and applies the brake II6 thereto, to quickly stop the expiring roll from further unwinding after its web has been severed. 1

Heretofore when renewing rolls, thepractice has been to stop the press. While the press speed is being retarded to the stopping point, or is being accelerated from a standstill to full speed, the product is generally improperly f olded and otherwise defective and is removed from the delivery belt and rejected. The number of papers lost for each such stoppage or interruption of the printing operation is considerable. To reduce this wastage, it is necessary not only to maintain printing speed while renewing the rolls on any deck, but also to make some distinguishing mark upon the folded copies of the product it distinguishable on the product.

which will identify them as containing the pasted or doubled web from one of the several rolls of paper from which the product is made. Such marked copies will preferably be marked upon the margin of the outside page, in chalk or marking pencil upon a few copies in advance of and following the pasted place, limiting the copies so marked to the smallest practical number.

To accomplish this result, we utilize the movement of the arms I25 by forming upon one of them a lug I 52, provided with a catch-plate I50, which latter is adapted to engage a hook-plate I54 secured to the sliding block I55 upon the rod I56. An upwardly yielding spring I51 acting against a collar I58 upon the rod I56 permits the sliding block to continue its upward movement after the rod I56 has reached the limit of its upward movement. The rod I56 is pivotally connected to a marking lever I59 fulcrumed upon a pivot pin I60 and carrying a marking pencil or crayon I6I. This crayon I6I is brought into contact with the running web at about the time that the roller I20 meets the fresh roll, and will therefbre begin to make a mark I onthe web in advance of the pasted place and will continue to mark the web until it is severed orlater, depending upon the time when the catch-plate I53 unhooks or releases the hook-plate I54 in its upward movement. The main purpose of the, marking of the web is to distinguish the copies containing the paste, rather than to count 011 any particular number of copies following thepaste, 1 as. the operator will quickly learn how many copies to remove following the beginning of the mark. A topscrew I62 limits the movement of the pencil arm I50, to prevent excessive pressure upon the pencil or crayon; The latter is adjustably secured to the arm I50 and preferably bears upon the web as it passes over an idle running carrier roller I63. 1

Obviously the marking of the web may be done in ink or pigment, with a pen, brush or roller, or dripped or sprayed upon or otherwise marked, or the web may be cut or torn or otherwise mutilated to render distinguishable the marked copies of the product as they advance upon the delivery.

The marking of the web may be done at any desired point in the printing operation between the pasting and delivemr, or upon the delivery itself and may be applied upon either side of any web and upon either margin thereof to make The devices included in the pasting, severing and marking mechanisms and their pneumatic control are similar for the three decks except that the marking lever and crayon are only applied to the web whichwill be at the outside of the folded product. There will be the same lugs I52, sliding blocks I55 and springs I51 for all decks, but the rods I64 and I 65 will extend from the three different arms I25 to the common lever I50 so that a pasting movement at any of the three decks will similarly mark the selected web. As the movements of the catch-plates are lifting actions only, against the lever I50 it follows that there will be no interference between them even though the pasting should occur simultaneously upon all three decks. In this device it is assumed that the lineal distance along each run of web from the paster roll to the point at which the various webs are associated is practically the same. Small diiferences may be disregarded,

ing been deposited uponthe bed extension 4 or but differences greater than can be compensated for within the range of the various adjustments, would obviously require a duplication or triplication of the marker applied at difierent points severed in the same manner as full width webs and would therefore mark the place of its pasting upon the outside or seiectedweb.

The web running from the expiring roll passes around the pasting roller I29 and thence over the free running roller I65. The direction of these web runs is so arranged in relation to the are or pathof movement of the roller I29 that the web will be neither stressed nor slackened by such roller movement in either direction, thereby avoiding web breakage, or slip and failure of the pasting operation.

The exhausted r011, after its web has been severed and its rotation stopped, will remain mounted in the heads. The web now is running from the fresh roll, which is likewise mounted in the heads. The rolls are now in the position shown in A deck. In this position the fresh roll continues to run and feed its web into the press until it has been reduced to approximately half its original diameter or one quarter of its original weight and contents. The operator now throws into engagement the roll holder drive and turns the roll holder to the position shown in deck B, having first started the tension belt drive through the clutch 81. The tension frame 98 may now be swung outward and upward to the position shown in -C deck and stopped by throwing out the clutch 88.

In the position shown in B deck the exhausted roll II' has been moved somewhat forward of its lowest position and the running roll is somewhat beyond its uppermost position. At this time the'reel is stopped and the centering plugs I 4 in the exhausted roll are withdrawn by bac'king the hand wheels I6. The exhausted roll will now fall out of place and upon the hinged rail sections IS'l, which are adjustably sustained by the eccentrics I68, which latter are keyed to the shaft I69, journalled in the rails 99 and are adjustable by a wrench from the front at I". By this arrangement the exhausted rolls may be of varying diameters, dependent upon the condition of the paper near the center of the roll and the hinged section of the rails or track may be raised to meet the exhausted roll. The fall of the latter is avoided or softened and the outward inclination of the track starts the roll outward, see deck B, Fig. -1. now rolls or is rolled outward upon ;the track 99 until it is upon the rollers 31, whose top surfaces form a continuation of tracks 99.

From'this position the exhausted roll may be pushed to one side and out of the way of incoming rolls, suitable roller brackets being provided for them at each deck level not shown or the ,exhausted rolls may be lowered, by the same hoisting device whichoriginally lifted them as fresh rolls from the floor. The hoist will be preferably of the usual electrically driven double chain type, not shown on the drawings. q

The hinged rail-sections also serve to act as stops to the incoming fresh roll. The latter hav- The exhausted rollthe bracket 8 and the exhausted roll having been disposed of, the fresh roll is so placed and the heads are so adjusted in angular position that the taper plugs Il may be forced into the central tube of the roll at both ends thereof. By caus ing the roll holder now to turn a short distance,

the roll is lifted and is free to revolve.

The outer traction belt has already been described as pocketed up out of the way of the incoming fresh roll by the upward movement of the rack I09. The 4-way valve H is now reversed and the traction belts 5III are brought into contact with the fresh roll. The belts are not under motion yet. It has been found that belts running at high speed when brought into contact with a stationary paper roll are apt to "tear or wear out the'outer layer or wrap of paper before the belts ovecome the inertia of the heavy roll, however nearly frictionless its mounting may be. With the outside layer gone or damaged the pasting operation is generally rendered impossible. v

When the traction belts are applied with considerable pressure to the rolls before the belts are started, it is found that by introducing a suitable and sensitive friction clutch coupling into the traction belt drive, the rolls may be started gently and with-no damage to the outside layer of paper thereon and with gradual and uniform increase in speed the inertia of the roll is overcome completely and the speed may be brought to correspond with the web speed. As there is no slipping of the belts upon the paper roll, it follows that the belts may be rubber or other material having a high coefficient of friction and may be forced against the paper with high pressure and belt grease may be applied to the belts both inside and out to increase their friction.

Multiple disk clutches are used preferably as being more sensitive and gentler in starting than other types. This arrangement of belt drive also offers advantages in giving a surer control of the roll speed when the press is suddenly stopped or started, after the -fresh"roll has been speeded up and the clutch is carrying its full load, as the fresh roll responds to every change in speed of the press and does not run ahead and unwind when the press stops, nor does it lag behind when the press starts, therebytending to break the web.

i The friction clutch couplingis introduced into the speed-up drive for safe and gentle starting and reliable speed control of. the fresh roll. The

friction clutch coupling is introduced into the drive of the traction belts of the expiring roll to continue this control and afford means for a quick stop of the latter after severing the web.

This two-traction belt arrangement gives the operator continuous control of the rolls from the time the fresh roll first begins to revolve until it is cut off and stopped, which control he-can not have with any single-traction-belt, as the latter can not act upon two paper rolls at the same time successfully.

Fig. 25 shows a paper roll of the usual proportions for printing 4 pages in width. For such a.

width, two pairs of traction belts for both the speed-up and slow-down would be used instead of one, as shown in' the other figures. The dvance edge of the web would be trimmed to ap-. proximately the outline shown at I'll. The points and inner angles would be stuck down to the roll by a relatively weak adherent at the points I12. A much more adhesive paste is applied at the outside margins of the points at I13. A running web pressed against a running roll so pasted will adhere to and take away with it the advance edge III, which is easily detached'from the body of the roll while sufliciently attached to prevent it from unwinding before the running web is applied to it.

When half-width rolls are used, if entirely at one side of the center, as in Fig. 20 or Fig. 26,

a roll spindle I'll is inserted in the roll-tube I3.

This spindle is enlarged at I15 to fit freely in the tube, but will be centered approximately therein.

Midway of the length of the spindle is a threaded portion I16, upon which is screwed a nut I'll having a tapered projection I18 adapted to enter and fit the inside of tube I3. The taper plugs I4 are bored hollow and receive freely the ends of the spindle I14 against their shoulders, as shown in Figs. 20 and 22'. The roll is thus centered and held against endwise movement by its central tube or spindle and isv carried by the taper plugs ll, which revolve with the roll-in ball bearings as already described.

When a half-width roll is used in the middle position as in Fig. 27, a spindle of a different type is used, such as I19, upon which are two threaded portions for the nuts I", the taper projections I18 enter both ends of the central roll tube, thus centering the roll and carrying it in the rotating taper plugs I4 centrally and without endwise freedom.

The advance edge of a half-width roll if placed at one side of the center, would be trimmed and pasted as shown in Fig. 26, or if it occupies middle position, as in Fig. 2'7. 1

The traction belts, if placed as shown, would be in a proper position for driving either fullwidth or half-width rolls, a full-width roll having 4 belts upon it while a half-width roll would have 2 belts upon it in either position.

Thus it will be seen that full or half-width rolls may be introduced into any deck and the halfwidth rolls may be in either position without changing any part of the machine.

Platforms and galleries, not shown, will be supplied at both front and rear, for the operators, also cross run-ways I80 and I8! and suitable connections to the printing press as at I82 and I83.

Flg.'39 shows a form of hoisting plug to be used either with or without spindles. It consists of a cylindrical plug, freely fitting the interior of the roll tube I3 and bored hollow at I85, to fit freely over the spindle I'll or I'I9,.so that it may be used as either a plug or a socket or bothv simultaneously, as would be the case in such' a combination as shown in Fig. 26. The exterior of the plug may be corrugated by having a fine screw thread I86 out upon it, to prevent it from slipping out of the tube I3 when hoisting the roll and for the same reason its interior.

surface I85 may be corrugated or roughened by having a fine screw thread cut in its interior.

" The edges, both exterior and interior, are beveled hoisting chain I9 I.

to facilitate its entry into tube I3, or over the end ofspindle I'll, a shoulder I8! is provided. to limit the distance which the plug may be inserted, while an internal shoulder I88 will likewise limit the distance which the spindle may be inserted into it. A clevis I89, pinned'to the plug by the removable pin I90, is attached to the There will be two hoisting chains of equal lengh and arranged to hoist equally, whereby the operator needonly inszrt the plugs into the roll tubes to their shoulders,

or push them over the ends of the spindles I'll or I19 as far as they will go, to insure the placing of the paper rolls in approximately their correct positions widthwise when deposited upon supports 4 or 8. The plug is extended to form a handle I92, preferably of suflicient weight to balance the plug on the pin I90.

An electric lamp I93 is shown in Figs. 29 and 30, the key I94 of which is turned on by the arm I59 whenever the marker is pushed down to mark the web, thus indicating to the operator that in a'few seconds there will appear upon the delivery belt marked copies of the product, containing somewhere within their folds apasted place. Obviously the electric lamp may be in any convenient position and be electrically controlled from the marker, although at a distance therefrom, in a well known manner. The lamp will be in the roll holder and having lowered the belts upon it by the manipulation of the 4-way valve I I5 then throws in the clutch 88 by means of the rod. 94. When the fresh roll is running at proper speed, the 4-way valve I45 is turned to lower the pasting roll I29 and later the knife I33, after which the 4-way valve I46 is reversed and the paster parts rise to the position shown in deck B. 4 After sufficient paper has been run off, the next step will be to start the rollholder to bring the rolls into the position shown in deck B. The exhausted roll is then removed and the roll holder is'turned to the position shown in deck C, when a new fresh roll may be put in and the operation may be repeated. A similar operation is proceeding upon the other decks whenever rolls become exhausted.

The second traction belts 59B are shown as It will be understood that springs or illustrated, more or less diagrammatically, the

association of the roll changer with a usual rotary perfecting press, the press shown having three printing and perfecting couples, A, B, C, each supplied by a web, the press A being supplied by the web W; press B by the web W; and press C by the web W. In the particular embodiment of the invention illustrated the three webs are associated at the folder F, consequently the marking device for throwing out double pasted products has been shown in detail as applied to but one deck or section of the machine. It will be understood, however, that a marking device may, if desired, be provided for each web, the devices being identical with that already described.

Having shown and described a preferredform of the embodiment of the invention, it will be obvious that various changes may be made as regards its form, detail construction and general

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