US1331579A

US1331579A - Printing-press

Info

Publication number: US1331579A
Application number: US249314A
Authority: US
Inventors: Maurice S Rosenfeld
Original assignee: DECALMO MACHINE CO Inc
Current assignee: DECALMO MACHINE Co Inc
Priority date: 1918-08-10
Filing date: 1918-08-10
Publication date: 1920-02-24
Anticipated expiration: 1937-02-24

Description

M. S. ROSENFELD. PRINTING PRESS. APPLICATION FILED AUG. 10, 1918.

Patented Feb. 24, 1920.

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& I I I FM IIIIIIIII Ti L 1- I 4- UNITED STATES PATENT OFFICE.

MAURICE S. ROSENFELD, OF NEW YORK, N. Y., ASSIGNOR 'I'Q DECALMO MACHINE 00.,

- INC., A. CORPORATION OF DELAWARE.

PRINTING-PRESS.

Specification of Letters Patent.

Patented Feb. 24, 1920.

Application filed August 10, 1918. Serial no. 249,314. 1

- To all whom it may concern:

Be it known that 1,.MAURI0E S. Rosan- FELD, a citizen of the United States, residing inthe borough of the Bronx, in the county of Bronx, in the city and State of New York, have invented a certain new and useful Improvement in Printing-Presses, of which the following is a specification.

The present invention relates to an improvement in printing presses and more particularly to printing presses of the cylinder type especially adapted for printing impressions at 'regular intervals on a continuous web or tape.

One object of the invention is to produce a printing press having improved means for perforating the strip of tape simultaneously with the printing thereof, so that the perforations and the printed impressions on the tape may have a certain and definite relation, to the end that when the tape is subsequently run through the press to receive another series of printed impressions over. the first series, the corresponding impressions will accurately register.

Another object of the invention is to improve generally upon the construction, organization and mode of operation o'f print- I ing presses of the above type, in order to produce a press which will operate upon a thin and delicate web or tape with great rapidity and accuracy without liability of injuring the tape, regardless of the number of times the tape is run through the press. In accomplishing this object, a feature of the invention resides in providing the printing ress with a winding mechanism-for Winding up the printed tape delivered from the printing rolls; this winding mechanism being of such construction that the take-up reel on which the tape is wound into a roll will be actuated according to the amount of tension on the length of tape extending from the printing rolls to the take-up reel, thus obviating the liability of breaking or tearing this part of the tape. Other features of the invention will appear hereinafter as the description .proceeds. The invention itself consists in the improved printing press described in the following specification and particularly pointed ont in the appended claims.

The preferred form in which it is at present contemplated embodying the invention is illustrated in the accompanying drawings,

in which Fi re 1 is a front elevation of the improved printing press; Fig. 2 is a rear elevation of the same; Fig; 3 is a plan View of the printing press; Figs. 4 to 7 inclusive are plans of a portion of the tape, illustrating its condition before and after several printing operations are performed upon it; Fig. 8 is a section taken on the line 88 of Fig. 3, looking in the direction of the arrows; Fig. 9 is a rear elevation on an enlarged scale of the central part of the press with certain portions thereof shown in section; Fig. 10 is a section taken on the line 1010' of Fig. 8; Figs. 11 and 12 are sections taken substantially on the lines 11-11 and 12-12, respectively, of Fig. 9 (in Fig. 11 the inking carriage is removed); Fig. 13. is a section taken on the line 13-13 of Fig. 12; Fig. 14 is a plan, partly in section, of the feed rolls; Fig. 15 is a detail of one end of the parts shown in Fig: 14; Figs. 16, 17 and 18 are sections taken on the lines 16-16, 1717 and 18--18,- respectively, of Fig. 14; Fig. 19 is a section taken on substantially the line 1919 of Fig. 20; Fig. 20 is a section taken on the line 2020 of Fig. 19; and Fig. 21 is ai'vertical'section through the printing rolls showing particularly the means for perforating the tape during the printing operation. I

The improved printing press of the present invention as illustrated in the drawings comprises an upper or type carrying printing roll 24 and an impression or lower printing roll 25, which cooperate to print impressions at regular intervals upon a strip of tape 26 fed between the rolls. The impressions are made on the tape at regular intervals throughout its length by type 27 formed on and raised from the surface of the upper printing roll 24. In order that the printed ular intervals, the groups of raised type are equally spaced on the periphery of the upper printing roll. In the present instance, three groups of type are shown. The web or strip impressions on the tape may be made at regv I ing press. The take-up reel 29 is fulcrumed on a stud 34 removably secured in the outer end of a bracket 35 fastened to the opposite end of'the table 33. Each of the

studs

30 and 34 is provided with a handle so that the stud may be readily removed to permit the rolls of tape to be placed in and taken from 'the press. Auxiliary printing rolls 37 and 38, located in close proximity with the lower printing roll 25, are provided for the purpose of assisting in feeding the tape between the two main printing rolls. The lower printing roll 25 acts as an impression roll to support the tape during the printing operation, and for this purpose its surface is provided with a yielding material.

During the printing operation the tape is perforated so that when the tape is again run through the press, whether one or more times, the subsequent printed impressions made on the tape will accurately register with the prior corresponding impressions printed thereon. simultaneously with the printing thereof by means of pins or projections 39 carried by the margins of the upper printing roll 24. The perforating pins cotiperate with holes formed in perforating rings 40 carried on the outer ends of the periphery of the impression roll 25. These perforating rings 40 are loosely mounted on the impression roll so that as the perforating pins enter and. leave the holes, the rings may have a slight oscillatory movement on the impression roll to prevent the perforating pinsf from binding in their cooperative holes. Under each hole in the rings40 is formed a slanting recess 41' inthe impression roll to permit the bits of paper out from the tape by the perforating pins to fall from the press.

When the tape is fed through the press for the first time in its unprinted, unperforated condition, it .is fed directly under the roll 37 over the impressionroll- 25 and delivered from the printing rolls under the roll 38. When, however, the tape has been once printed and isperforated, and is subsequently fed through the press to receive the desired number of subsequent impres. sions, the tape is fed between the printing rolls by passing it under the roll 37 over an auxiliary roll 43, thence under the upper printing roll 24 with the perforations in the tape engaged by the perforating pins on the upper printing roll. As in the first instance, the tape is delivered from the printing rolls by passing it over the impression .roll 25 and under the roll 38. This mode of feeding the tape for the subsequent printing bperations is indicated by the dot and dash lines in Fig.

' 8. By this means an accurate registry be- Impressions on the tape is effected. The

auxiliary roll 43 is pivoted on a stud 44 car- The tape is perforated I mauve ried by the upper ends of the arms 45 ivoted on lugs 46 on a framework 47 rismg from the main table 33.

The upper and lower printing rolls 24 and 25 are respectively mounted on

shafts

48 and 49 carried by

blocks

50 and 51 slidingly received in guide-ways formed in the upper part of the frame 47. The printing rolls are normally held apart by springs 53 (Fig. 10) received in facing recesses in the blocks. Screws hold the springs in place in the lower blocks 51 so that when the upper printing roll is removed the springs will not e lost. By turning the set screws 54, passing through top plates 55 spanning the vertical slots in which the

blocks

50 and 51 are received, the tension of the springs 53 may be regulated. The plates 55 are held in position y thumb screws 56 threaded into the open ends of arms 57 pivotally mounted on uprights 58 formed on the frame 47. By

unloosening the thumb screws 56, swingfrom a spur gear 60 (Fig. 10) fixed on the shaft 49 of the lower printing roll, which meshes with a spur gear 61 fixed on the shaft 48 of the upper printing roll. The auxiliary roll 38 is also driven by the lower printing roll, and for this purpose a gear 62 carried by the shaft 49 meshes with a gear 63 (Fig. 11) mounted on the shaft of the auxiliary roll 38. The hub of thegear 60 is provided with a bevel gear 65 which meshes with a corresponding bevel gear 66 mounted on the forward end of a shaft 67 journaled in brackets secured to the frame 47 The shaft 67 carries a large bevel gear 68 which meshes with and is driven by the bevel pinion 69 carried by the upper end of the shaft 70' (Fig.10), on the lower end of which a bevel gear 71 is fixed, which is driven by a bevel pinion 72 fixed on a shaft 73 journaled in the frame 47. The shaft 7 3 is provided with a large gear 74 which is driven by a bevel pinion 75 fixed on the upper end of a vertical shaft 76 the lower end of which is supported on a bearing 77 (Fig. 8) fixed in the hollow table 33. Fixed on the s aft 76 is an upper, cup-shaped clutch member 78, adapted to 005' erate with and be driven by a lower clutch member 79, which is in the form of a truncated cone. The lower clutch member 79 is loosely mounted on the shaft 76 and is yieldingly pressed upwardly into driving engagement with the upper clutch member 78 by the spring 80 surrounding the shaft 76 and received in a recessformed in the upper end of the hub of a bevel gear 82 also loosely mounted on the shaft 76. The gear 82 meshes with and is driven by a'bevel pinion 83 securedon the inner end of a shaft 84. The outer end of the shaft 84 carries a clutch member 85 which is driven by a. clutch member 86 carried on the outer end of the shaft of a motor 87-which constitutes the sourceof power for the printing press. The gear 82 is in driving engagement with the lower clutch member ,7 9 by means of pins 88.

. The two clutch members are disengaged against the action of the spring 80'by means of a lever 90 pivoted at 81 on the frame of the press. The lever 90 is in the form of a yoke and its arms carry rolls 91 supported on the inner ends of inwardly projecting pins secured in the arms of the lever. The rolls 91 are engaged by a groove 92 formed in the periphery of the lower clutch member 79. The free end of the lever 90 carries a cam roll' 93 which is adapted to be engaged by a cam 94 secured to a shaft 95 to the outer end of which a handle 96 is as- 25 tened. By turning the handle 96 in the proper direction, the lower clutch member 79 may be depressed against the action of its spring to move'it out of engagement with its upper clutch member 78; or it may be released-to permit the spring 80 to force it against the upper clutch member, so that the shaft 76 and the parts operatively connected With it may be driven by the motor 87. The operative parts of the printing press already described, as well as the remaining operative parts thereof, may be turned manually by the hand-wheel 97 secured to the outer end of the shaft 98, the inner endof which is provided with a clutch member 99 adapted to cooperate with a corresponding clutch member 100 fastened to the shaft 7 3. A spring 101 (Fig. 10) received in the recessed hub of the hand wheel tends'to disengage the two

clutch members

99 and 100. The web or strip oft-ape 26 is fed to the printing rolls by means of a series of oooperating feed rolls 103, 104 and 105. The

shaft of the lower feed roll 104 is joui'naled in the frame 47, and the shafts of the rolls hinged to the frame 47 on pivot pins 107. The surface of the feed rolls are preferably formed of cork or some similar material having a high coefficient of friction. A snap 108 secured to the frame 106, by engaging with the head of a screw 109 in the frame 47, holds the frame. 106 in operative ition. When the snap 108 is disengaged 5m the screw 109, a spring 110 the upper end of which is fastened to a projection 111 on the frame 106 and the lower end of which is fastened to the frame 47, as shown in Fig. 2, servesto tip the frame into the position shown by dotted lines in Fig. 17. By means of this construction the strip of tape to be 103 and 105 are journaled in a frame 106 printed may be. readily and quickly placed between the feederolls, by turning back the frame 106 with the

rolls

103 and 105, placing the tape over the lower roll 104 and lowering the frame 106 to bring the

rolls

103 and 105 into operative relation with the roll 104.

One end of the shaft of the feed roll 104 is provided with a spur gear 112 which meshes with and drives a spur gear 113 fixed on the shaft of the feed roll 105-. The other endof the shaft of the feed roll 104 is provided with a bevel gear 114 which'meshes with and is driven by a corresponding bevel gear 115 fixed on the rear end of the shaft 67. The bevel gears 66 and 115 are of the same diameter, so that the tape may be fed to the printing rolls with the same speed with which it passes through the printing rolls. The s trip'of tape passes to the feed rolls through upper and lower pads 117 of some fibrous material such as felt, and is de livered from the feed rolls between similar pads of felt 118. The upper felt pads are carried by the frame 106 and the lower pads of felt arecarried !by the frame 47, as clearly shown in Fig. 8. The .pads of felt act as brakes upon the tape in order that it may be drawn from the supply roll and fed to the printing rolls in a smooth and even manner. Incidentally, these pads of feltact to clean the tape In passing to the feed rolls from the supply reel, the strip of tape passes over aroll 119 journaled in a bracket 120 secured to the end of the frame 47. It will be observed that the end feed rolls 103 and 105 are provided with flanges which guide the tape in its passage through the feed rolls.

Although the printing rolls and the feed rolls are driven at the same rate of speed, so that normally the tape is delivered from the feed rolls with the same rapidity with which it enters between the printing rolls, it

has been found necessary to permit. the tape to form a deep loop or-bight, as indicated at 122-, between the feed rolls and the printing rolls. This is for the purpose of preventing-the perforating pins from tearing the tape in case of any possible discrepancy or difference in the action of the printing rolls and the feed rolls. This discrepancy is liable to occur by reason of the fact that as the supply roll of unprinted tape diminishes in size, more force is required to draw the tape from the supply reel. By the provision of-the loop 122, theprinting rolls are effectively prevented from exerting anytearing strain upon the tape.

The printing material to be impressed upon the tape by the printing rolls will hereinafter generically be termed ink, Whether this printing material be sizing, varnish, bronze or other substance. The ink is supplied to the printing rolls by a series of ink- I .ing or ink supplying rolls carried by a carriage124, and comprisin an inking roll proper 125, an ink carrying roll 126, two spreading rolls 127 and 128 and an adjusting roll 129. These rolls, except the ink carrying roll 126, are journaled in blocks adjustably secured in the carriage 124. The inking roll 125, the spreading rolls 127 and 128 and the adjusting roll 1291may be adj-usted relatively tothe ink carrying roll 126 by means of handles 130, which are connect e with the blocks in which the rolls are journaled in such wise that the turning movements imparted to the handles 130 either move their respective rolls toward or from the ink carrying roll 126. The ink is supplied to the adjusting roll 129 from a tray 131 supported on the upper part of the carriage 124. The adjusting roll 129 acts to put the ink in the first instanceon the ink carrying roll 126. The rolls 127 and 128 act to spread the ink out on the ink carryingv roll, and for this purpose the,

spreading rolls are caused to move axially of the ink carrying roll by means of a cam 133 (Fig. 12) fixed on the shaft of the ink carrying roll. The cam 133 is provided with a cam groove which engages cam rolls supported on the lower ends of levers 134,

the upper ends of which carry rolls received in grooves formed in collars 135 fixed on the extended ends of the shafts of the.

spreading rolls. These parts have such'relationship of construction that the spreading rolls move axially in opposite directions;

The inking roll 125 serves to convey the ink from the carrying roll 126 to the upper, type carrying printing roll 24.

The rolls 125, 126 and 129 are rotated, and

for this purpose their. shafts are. provided respectively with-

gears

137, 138 and 139.

The gear 138 on the ink carrying roll 126' meshes with and is driven by a spur ear 123, the hub of which has fixed upon 1t a bevel gear 140 which meshes with the bevel gear 141 loosely mountedon a shaft 142 (Fig. 9), the forward end of which carries a second bevel gear 143 fixed upon the. shaft.

The gear 143 meshes with and is driven by the bevel gear 65. The gear 141 is in pin and slot connection with the extended hub of a clutch member144 loosely mounted on the shaft 142. This clutch ,member 144 is adapted, when the carriage 124 is moved toward the printing rolls, to be brought into locking engagement with a" second clutch from the frame 47. By adjusting the stop pin 148 in the lug 149 the amount of. ink supplied by the roll 125 to the upper printing roll 24 may be regulated.

he under surface of the carriage 124 is provided with racks 151 (Figs. 12 and "19), of which there is one on each side of the carriage. These racks 151 are engaged by' pinions 152 mounted on a shaft 153 journaled in the frame 47 By turning the handle 154 fixed on the outerend of the shaft 153, the carriage 124 may be moved toward the printing rolls to supply ink thereto or may be moved away from the printing rolls. When the carriage 124 has been moved into operative relation with the printing rolls, it is held in that position with the lug 149 up against the stop pin 148 by tightening the split sleeve 155 which surrounds a collar fixed on the shaft 153, by turning a thumb.

screw 156. In order that the ink supplying rolls may be turned manually, the shaft of the ink carrying roll 126 is provided with a hand wheel 157.-

When the printed and perforated tape is delivered from the printing rolls, it passes under a guide roll 159 loosely mounted on the shaft 153. It then passes between two outer guide rolls 160 and 161 journaled in the end of a bracket 162 fastened to the frame 47.. It will be observed that the bottom guide roll 161 is of the same diameter throughout and and that the upper guide roll 160 has its central portion of smaller diameter than the end portions. This is for the purpose of preventing the central portion of the upper guide roll from striking and marring the impressions made upon I the tape by the printing rolls. In like manner the central portion of the guide roll 159 is of smaller diameter than the end portion thereof and' for the same purpose. From the guide rolls 160 and 161 the printed and perforated tape passes to the take-up reel 29.

In order that the printed tape may be properly wound up into a roll without liabil ity of breaking or tearing the tape, the printing press is provided with a winding mechanism. This Winding mechanism comprises thetake-up reel 29 and means for actuating the reel. The reel is provided with a core 163 upon which the printed tape is wound up. It is obvious that when the roll of tape on the core 163 is relatively small, the takeup reel 29 must move through a greater angular distance in order to takie up the slack between the printing rolls andthe reel,

than the angular distance it must move.-

through when the roll on the core is rela-' tively large. And so, if the take-up reelwere driven at a constant speed, the growing} roll on the core- 163 would soon exert a breaking or tearing strain on the length of tape extending from the printing rolls to the take-up reel. The winding mechanism is so constructed that the take-up reel is not driven positively and at a constantspeed, but is actuated intermittently according, to the tension on the length of tape extending from the printing rolls to the reel. When the tension exceeds a predetermined amount,

' the take-up reel is held fast, or is slowed journaled on the bracket 35. The gear 164 meshes with and is driven by a bevel gear 165 fixed on a shaft 166 journaled in bearings on the bracket 35. The shaft 166 is connected by a universal joint 167 to a link 168, which is in turn connected by a second universal joint 169 to one end of a shaft 170 (Fig. 9) journaled in a bracket171 fastened to the frame 47. The other end of the shaft 170 carries a clutch disk 172 in driving connection with a second clutch disk 173 by means of a friction washer 174 interposed between the two clutch disks. I The clutch disk 173 is mounted to slide on one end of a shaft 175 journaled in a bracket 176 secured to the frame 47, but is turned by the shaft 175 by means of a key and spline connection therewith. A spring 177, received in a cup .17 8 screwed on a collar 179 fixed on the shaft 175, serves to yieldingly press the disk 173 and the friction washer 174 against the clutch disk 172. The tension of the spring 177 may be regulated by turning the cup 178. A check nut 180 holds the cup 178 in adjusted position. The shaft 175 is driven by a bevel gear 181 which meshes with the horizontally arranged bevel gear 71. It will be observed by comparing the gear connections between the gear 71 and the printing rolls and the feed rolls on the one hand and the gear connections between the gear 71 and the take-up reel on the other hand, that the rotation of the take-up reel is substantially one and one-half times as fast as the rotation of the printing rolls and the feed rolls.

So long as the tension on the part of the printed tape-extending from the printing rolls to the take-up reel is less than a certain amount, the clutch disk 173 is permitted to drive the clutch disk 172 and the parts connecting it with the take-up reel; but when the tension on this part of the tape'exceeds the predetermined amount, then the clutch disk 172 is held fast, 01' is slowed down, so that the clutch disk 173 slips thereon and either no turning movement or but little turning movement is imparted to the takeup reel. This continues until the tension on the tape decreases to a point below the predetermined amount whereupon the clutch disk 172 is released to permit the take-up reel to be actuated at normal speed. The devices for holding and releasing the clutch disk 172 comprise a tension roll 183 (Fig. 11) arranged to engage the under surface of the printed tape as it passes from the.

printing rolls to the take-up reel. The tension roll 183 is journaled in the free ends of arms 184 fixed on a shaft 185 journaled in the bracket 162. One end of the shaft 185 extends beyond the arms of the bracket 162 and carries thereon an arm 186. This construction is substantially a bell-crank lever with the arms 184 constituting one arm of the lever and the arm 186 constituting the other arm of the lever. the arm 186 being the same length and extending in the same direction, the up and down movements of the free end of the arm 186 are of the same extent and synchronous with the up and down movements of the tension roll 183. The free end of the arm 186 is pivotally connected with the free end of the long arm 187 of a lever 188 pivoted to the frame 47, the short arm 189 (Fig. 9) of the lever 188 being connected by a link 190 with the free end of a lever 191 (Fig. 12) pivoted at 192 on an inward extension of the bracket 171. A turnbuckle 193 is provided to regulate the length of the link 190. A metallic brake band 194, one end of which is loosely connected with the pivot pin 192 of the lever 191, and the other end of which off It will be clear from a consideration of Fig. 12 that when the link 190 is raised, the brake band 194 is tightened on the clutch disk 172 to hold it fast or to slow .downits rotation, and conversely when the link 190 is depressed. the brake band 194 is loosened on the clutch disk to permit'it to turn at normal speed.

It will be noted that the lengths of the

arms

189 and 187 of .the lever 188 are so proportioned that a slight amount of force exerted on the free end of the arm 187 will exert a considerable amount of force on the link 190, this force being proportionate to the relative lengths of the

arms

189 and 187. Consequently, the thin delicate tape with which the tension roll 183 is in engagement, is able to exert a force upon the link 190 suflicient to cause the brake band 194 to tightly hug the clutch disk 172 and thereby prevent the clutch disk 173 from driving it and the take-up reel. The tension roll 183 is yieldingly pressed upwardly into engagement with the under surface of the tape by means of a spring 197, one end of which is connected with an extension 198 of the arm 186, and the other end of which The arms 184 and is connected with an adjusting screw 199 loosely received in a hole in a stud 200 secured to the bracket 162. Check nuts 201 secure the adjusting screw 199 in adjusted position. By adjusting the screw 199 in the stud 200, the upward pressure of the tension roll 183 against the tape may be nicely regulated and the action of. the tape against the tension roll thereby controlled. So long as the tension of the tape exceeds the predetermined amount, which of course will depend upon the tension of the spring 197, it serves to depress the tension roll 183, thereby depressing the pivotal connection 202 between the arm 186 and the arm 187. The depression of the free outer end of the arm 18'? of the lever 188' serves to raise the link 190 and thereby tighten the brake band 194 on the clutch disk 172. .So long as the tension roll 183 continues to be pressed downward by the tension of the tape against it, the band 194 is in braking engagement with the disk 172 and the take-up reel is held from turning. During this operation the printed tape is, of course, continuously delivered from the printing rolls, and so the tension on the part of the tape extending from the printing rolls to the take-up reel constantly becomes less, with the result that the tension roll 183 is finally permitted to rise and thereby loosen the band 194 on the clutch disk 172 to permit the clutch disk' 173 to drive it and its connectedtake-up reel. Thereupon the actuation of the takeup reel continues until the tension on the tape again becomes suiiicient to depress the tension roll 183. The oscillations of the tension roll, the downward movements of .which are imparted by the tightening tape and the upward movements of which are imparted by the spring 197, occur with great rapidity. This is owing to the small arc of the oscillations, which in turn is owing to the rapidity with which the tape gains and loses its predetermined amount of tension. In practice this part of the tape seems to flutter.

Theprinting press of the present inven-..

tion is especially adapted for operation in such cases where the strip of tape to be printed requires subsequent impressions on the impressions already printed on the tape. An accurate registry of the'several corresponding impressions is secured by perforating the tape simultaneously with printing the first series of impressions, and then using the perforating insane for engagement with the perforations when the tape is subsequently passed through the press. Inasmuch as accurate registry of the corresponding impresslons of the successive series issecured, the printing'press is peculiarly tures of the invention may be embodied otherwise than as shown and described, and yet be within the scope of the following claims. s

Having thus described the invention, what is claimed as new is:

1. A printing press having, in combination, printing rolls comprising a type-carrying roll and an impression roll, perforating pins on one of saidrolls and perforating rings loosely mounted on the other of said rolls and having holes corresponding to the pins, means for feeding a tape to the rolls and means for actuating the rolls.

2- A printing press having, in combination, printing rolls, means for feeding a tape to the printing rolls, means for perforating the tape during the printing operation, an auxiliary roll brought into operation when the tape is fed to the printing rolls after the first time so that the perforating means may engage with several successive perforations in the ta e, and means for actuating the printing ro is.

3. A printing press having, in combination, printing rolls, means for feeding a tape to the printing rolls, perforating pins carried by one of the printing rolls, holes in the other printing roll corresponding to MAURICE s RosENrEnD.