US1987872A - Feeding means for printing presses - Google Patents

Description

Jan. 15, 1935. V A. ROSENTHAL 1,937,872

FEEDING MEANS FOR PRINTING PRESSES Filed May 21, 1932 G Sheets-Sheet 1 INVENTOR ATTORNEY Jan; 15, 1935.

A. ROSENTHAL 1,987,872

FEEDING MEANS FOR PRINTING PRESSES Filed May 21, 1932 6 Sheets-Sheet 2 ,INVENTQR .BYMWMILM ORN EYS Jan. 15, 1935. ROSENTHAL 1,987,872

FEEDING MEANS FOR PRINTING PRESSES Filed May 21, 1932 6 Sheets-Sheet 5 S ir/gff jfjgii igi ATTORN EY v Jan. 15, 1935. 1,987,872

A.- ROS ENTHAL FEEDING MEANS FOR PRINTING PRESSES Filed May 21, 1932 6 Sheets-Sheet 4 ATTORNEY! Jan, 15, 1935. A, fiosEN'rH/AL 199379872 FEEDING MEANS FOR PRINTING PRESSES Filed May 21, 1932 6 Sheets-Sheet 5 I INVENTOR ATTORNEY J Jan. 15, 1935. A. 'ROSENTHAL w wzz FEEDING MEANS FOR PRINTING PRESSES Filed May '21, 1952 6 Sheets-Sheet 6 T INVENTOR Z 5 if/fiar fwa/r/fia/ M aid TTORNEYS Patented Jan. 15, 1935 FEEDING S FOR PRINTING PRE SSES Arthur Rosenthal, Grand Rapids, Mich., asslgnor to The Rose Patch & Label Company, Grand Rapids, Mich.

Application May 21, 1932, Serial No. 612,677 1201mm. (01.101-292) v This invention relates to improvements in feeding means for printing presses. It relates particularly to a feeding means for feeding the web to and from an intaglio printing press and cut- 5 ting the same into sheets and delivering the sheets. The invention is a development and improvement of the feed means and structure appear-ing in my Patent No. 1,826,525, issued September 8, 1931.

The objects of the invention are:

First, to improve the auxiliary feed and tensioning means to avoid tension and strain when printing.

Second, to provide an improved feed for multi- 15 color press work organized to effectively print and deliver the multi-color print and cut and deliver a single sheet at a time.

Third, to provide such a feed mechanism which may be readily changed and either adapted to out a single sheet or a plurality of sheets, thus adapting the same machine to feed for multi-color or single color printing.

'- Fourth, to provide improved means for advancing the sheets which may be accurately adjusted 35 to deliver the sheet from one set of printing dies to another for accurate and eflective multi-color work.

Further objects and objects relating to details and economies of construction will appear from U the detailed description to follow. A preferred embodiment of my invention is described in the following specification. The same is fully illustrated in the drawings, in which:

Fig. 1 and Fig. 1A show a detailed side elevation of my improved feed mechanism associated with and delivering to and from an intaglio printing press of well known design. I

Fig. 2 is an enlarged detail elevation partially in section on line 2-2 of Fig. 3, showing the feed mechanism organized to feed for multi-color printing, and organized to deliver a single sheet at a time.

Fig. 3 is an enlarged detail transverse sectional elevation on the irregular line 3-3 of Figs. 1A and 2, showing the actuating mechanism for the feed carriage and certain details of various operating cams.

Fig. 4 is an enlarged detail sectional elevation similar to that appearing in Fig. 2, of the machine organized to cut and deliver two sheets at a time. The machine is thus being adapted to single color work.

Fig. 5 is a detail perspective view of the left .27 hand or intake feed end of the machine, showing the auxiliary feed mechanism for relaxing the web and delivering it evenly and not disturbed by tension.

Fig. 6 is an enlarged detail sectional elevation 6 on line 6-6 of Fig. 7 showing means for releasing the tension on the feed rolls of said auxiliary feed. 1

Fig. '7 isadetail plan view of the same mechanism that appears in Fig. 5. I

Fig. 8 is an enlarged detail sectionalelevation taken on line 88 of Fig. 1A, showing the crank plate and adjusting slide with a scale for adjusting the feed slide connection to deliver the right length of sheet. r

Fig. 9 is an enlarged detail elevation of this adjusting slide from the face-side.

Fig. 10 is a detail of'themechanism for controlling the actuation of the feed jaws.

The parts will be identified by their numerals of reference which are the same in all the views.

1 is an intaglioprinting press of usual design to which I have added brackets 2 for carrying the paper roll- 3 and an auxiliary feed and paper tensioning device 4 to insure the proper and even delivery of the paper from'the rolls to the printing press during the feeding operation. are the webs of paper, one, two or any number being available.

. A pair of feed rolls 41, 42 withdraw the'we from the roll and deliver it'to the press. The roll 42 is a spring tension roll, its journal pins 43 being carried-in adjustable boxes 44 which are held yieldinglyin place by adjustable springs 45,

see Fig. 6. The bearing blocks of the spring pressed roll are controlled by a pair of cams 46, one at each end, only one being illustrated, as

they are identical. These cams are controlledby tension upon the sheet as it is fed and carried into the press by the feed jaws hereafter to be described which engage the end of the web 5'.

A hand wheel 411 on the spindle 41' of the roll 41 enables its manipulation so that more of the web 5 can be delivered into the loop 51 if the said loop becomes taken up by the feeding operation.

6 is the base of my improved feeding and cutofi machine. 7 is the frame of the machine consisting of uprights 71, 71, side rails '72, 73 and end means '74, 75. l

The paper webs 5 are delivered through the intaglio press as indicated in Fig. 1, and are passed to my cutting machine where they are held-by the pairs of holding jaws 8, 81. These jaws are carried on upright guide bars 83 84, see Figs. 1, 2 and 4, and are controlled by earns 85, 86 in pairs acting on the lower ends of plungers connected to said guide bars.

These jaws grip the paper web at the proper level to be sheared to cut off the sheets. The cams then first. after the cutting off, operate to elevate the clamping jaws 8. 81 to the position for the feed jaws to grasp a projecting end of the paper web.

After the feed jaws engage, the cams then operate to drop the lower jaw 8. as seen in Fig. 4, down to the level of the bottom fixed shear cutter, leaving the upper clamp in contact with the upper side of the sheet. The cams then further operate to raise the upper clamp 81 from that position, thus completely releasing the web, when the same can be advanced without being rubbed either on the upper or lower side by the jaws or anything else.

The webs are fed. as seen in Fig. 4, two sheet lengths at a time. Thereupon the upper clamp 81 is dropped into contact with the lower clamp 8. the spring presser pins 87 being provided on each clamp 8 to insure even contact when the upper clamp 81 descends, thus to insure the paper being held securely in the said clamp. When the sheets are cut from the web this operation is repeated.

Auxiliary spring clamp pins 218 are carried by brackets 219 on cross bar 220 to cooperate with the upper face of fixed knife 21 to clamp the first sheet and hold it in position to be cut oil.

These auxiliary clamp pins 218 are actuated from the cam shaft 17. A cam 171 with cam roller 172 actuates the plungeror pitman 173 which actuates rockshaft 174 through rockshaft arm 175 to which said pitman is pivoted at 1'76.

Spring finger 17'? carried by rockshaft 174 projects over the upper end of the spring clamp plunger 218 and forces the same downward against the springs into engagement with the paper web resting on the upper side of the fixed knife blade 21.

The reciprocating feed carriage 9 is supported on suitable ways 91 at the top of the frame '7, see particularly Figs. 1A and 2. The reciprocation of this feed carriage 9 is controlled from the crankshaft 10. This is provided with a crankshaft arm 101 which connects by a forked pitman 102 at pivot 102' on the carriage actuating lever 103. The said carriage lever 103 is fulcrumed at 104 on the cross bar '74 at the base of the machine. The lever 103 is provided with a yielding connection link 105 to the downwardly projecting lug or arm 92 on the carriage 9. The link 105 is yieldingly connected by the springs 105' see particularly Fig. 2. disposed each side of the upper end of the lever 103. The lever 103 is divided at its upper portion, as seen particularly in Fig. 3, where U-shaped arms 106. 106 at each side form a broad loop that embraces both runs of the conveyor 30. The crankshaft 101 is supported on bracket A braced by the brace B, see particularly Figs. 1A. 8 and 9.

An adjustable slide 107 is on the crankshaft arm 101. see Figs. 1A, 8 and 9. and this slide is controllable by the hand screw 108. A suitable scale is provided to enable the eifective adjustment of the same. On the slide 107 is the wrist pin 101' to which the forked pitman 102 is connected. The rockshaft 10 is provided with sprocket wheel 109 and is driven by suitable sprocket chain connection from the main machine as clearly seen in Fig. 1A. Pitman 102 is made adjustable as to length, as will be seen in Fig. 1A.

The carriage 9 carries the feed jaws, one pair for each web. The lower jaw 13 is stationary and is secured by bolts 131 to the cross bar 93 of the carriage 9. The upper jaw 14 is fulcrumed at 141 and carries a projecting arm 142 under which is disposed spring 143 to hold the said jaw firmly closed. A pivoted latch plate 15 is provided for the projecting arm of the upper jaw and is held yieldingly in position by the spring 151. A cam means is provided for opening the jaws to release the paper feed after it is fed.

The cam 16 is carried on the cam shaft 17, as seen in Fig. 2, and is provided with projections 161 and 162 oppositely disposed, see Fig. 3. The cam roller 163 is carried by plunger 164 which is connected to operate rockshaft 18 and is connected to the rockshaft arm 181. This rockshaft arm 181 is providedwith actuating arms 182, 182, one for each pair of jaws, and the jaws are opened by these arms being depressed. The pivoted latch plate 15 engages the projections at the rear end of each upper jaw 14 and holds the same in open position. The jaws remain in open position until they have been advanced to the position to engage the projecting ends of the paper webs 5, when the latches are released.

This release is accomplished by means of the rockshaft 19 which has a pair of projecting fingers 191 for engaging the latch 15, indicated by Fig. 2, swinging the same to one side and permitting the spring 143 to close the jaws and engage the projecting ends of the paper web. The rockshaft 19. see Fig. 10, is actuated from rockshaft 18 which carries the downwardly projecting arm 183 which connects by link or pitman 184 to the downwardly projecting arm 192 on rockshaft 19.

Thus cam 16 at one end of the travel of the carriage closes the jaws and at the opposite end releases the jaws so that they will engage the paper web or webs. The cam 16 is driven at the same rate of revolution as the cam for controlling the carriage, and is thus provided with two projections to accomplish this work.

The holding jaws are timed to hold the paper until the feed jaws grasp the same and then these jaws are opened as indicated in Fig. 2 and their relative position in action is, as described above, to permit the grasping of the web and the feeding of the same forward.

When the paper web is fed forward the .length of two sheets, it is necessary that these sheets be effectively severed. This is done by the cutter means which I have provided, and which is also cam actuated. Two pairs of cutter knives are shown which are identical except that the cutter knife farthest removed from the holding jaws is provided with auxiliary clamping pins to position and clamp the webs in proper relation to the lower cutting blade of the shears.

A pair of stationary shear blades 20, 21 are carried by cross bars 201 and 211 disposed across the frame of the machine. Above these are reciprocating shears 202 and 212, respectively cooperating therewith. These shears are reciprocated in suitable guides 203 and 213, respectively. on opposite sides or" the machine. They are held resiliently against their guides by the spring structures 204 and 214, respectively.

These consist of loop bar 205 and 215 within which are disposed compression springs 206 and 216 which act upon guide plates 207, 217 for the ends of the movable shears to hold them yieldingly against their guides.

The shears are actuated by a cam 22 carried on a cam shaft 23. see Fig. 1. This acts upon cam roller 24 which is connected by pitman 25 to bell crank arm 26 which is connected to bell crank arm 27 by adjustable connecting link 261.

There are pairs of bell crank arms 26 and 27 pivotally connected to the shears in each instance at 262 and 272, so that the shears are swung up and down in unison and in parallel relation by the said bell cranks.

The connecting arms 261 are coupled together as described in my said former patent. Knife 212 is thus operated because harnessed to knife 202. The paper web is fed past knife 202 and the parallel connection is necessary. The paper is held by the jaws until it is completely severed.

In Fig. 4 I have illustrated both knives in position for operation. In Fig. 2 one knife only is in operation. The knife 202 and its supports are disconnected from the knife 212 and its support and are blocked in the raised position there seen. To the upper holding jaw 81, I secure an extension 811 terminating in an engaging portion 812. An extension 813 is secured to the lower jaw, whereby thejaws 8 and 81 by these extensionsserve to support the end of the paper web in the same relation to the knife 212 that the jaws 8 and 81 support the same. in relation to the knife 202. v 1

When the machine is thus adjusted, it requires the adjustment of the slide 107 on the crankshaft arm 104 to give the' right throw to the wrist pin 101' to oscillate the carrier lever 103 to reciprocate carriage 9 to bring the gripping jaws 13 and 14 to the right position to grasp the paper in the new position when the extended jaws are provided. It is necessary to provide an actuating plunger bar 191' on the lower end of the arm 191 supported by pivoted link 174' on the rockshaft 174, so that the jaws 13, 14 would be controlled in the new position, the plunger 191' being very readily attached and detached for that purpose. No other change is required in the operating mechanism to make this change.

The sheets when severed must be carefully delivered to a drier and I have provided an endless longitudinal conveyor 30 to receive the same. This is driven by drum 31, see particularly Fig. 2. The upper run of the conveyor is held in close proximity to the lower run by the idler 32. The conveyor carries the sheets longitudinally of the machine to the drier 33, see Figs. 1, 1A, 2 and 4. When the sheet, orthe forward sheet where two are being cut, has been severed, it is important to discharge the same promptly from the feed jaws so that it will drop onto the upper run of the conveyor without clashing with any other sheet. To accomplish this,I provide a striker 35 carried on the cross shaft 351 having a downwardly projecting arm 352 terminating in a felt pad 353 for contacting with the severed sheet. The striker is operated from cam 354 carried on the cam shaft 17 reacting upon the plunger 355 which is pivotally connected at 356 to the said striker 35. The cam is timed to operate the striker immediately after the feed jaws are opened to release the sheet.

A live cross shaft 36 is provided in advance of the forward fixed shear in each instance to assist in delivering the severedpsheet and to discharge any static electricity that has developed in the paper.

In operation, my improved machine is very similar to that of my said former patent. However, here a loop of paper 51 is dropped down by the auxiliary feed in advance of the printing press. In the structure as seen in Figs. 1, 1A and 2, the paper is advanced by a single step at each evolution and is advanced through the holding jaw extensions. When the paper is cut off, the

striker 35 acts at once, taking the sheet from the jaws, this beingian adjunct beyond what appears in my said former patent and it is an important improvement-on the same. The paper is then dropped down on the upper run of the conveyor and is advanced straight out of the machine without any cross delivery. This is accomplished by the large opening or eye formed through the upper part of the oscillating feed lever 103.

. When the machine is set for operation, as seen in'Fig. 4, the sheets drop down, the electricity is discharged therefrom, the forward sheet being disengaged from thejaws by the striker the same as before. By adjusting the slide 107 of the wrist pin 101', a very accurate feeding is very readily secured. The elastic'connection to the carriag insures even movement of the parts.

.I have described my invention in its improved form exactly as'I wish to claim it and desire to state that the'same is capable of considerable variation. I. desire to claim the specific form and the variations as indicated in the appended 01811113. '7

Having thus described my invention, what I claim as new and desire to secure by Letters Patent ,is: i

1. In a machine of the class described, the combination of a'printing .press, a roll support at the receiving end with a roll of paper thereon, friction feed rolls for withdrawing the paper web from the said roll and delivering it evenly into a loop in advance of said press, a pair of holding jaws beyond the said press, a feed carriage, a pair of feed jaws carried by said carriage to reciprocate to and from the said holding jaws for pulling the paper web therethrough, cam means for controlling the said jaws, pairs of cut-off knives for severing sheets from said web beyond said holding jaws, a striker to act on the severed sheet'next the feed jaws, cam means for actuating the same to cause it to act upon the cut-off sheet at the time it is released by the said feed jaws, a live roll in'advance of each cut-oil! shear to assist in delivering the sheets and discharging static electricity, a longitudinal endless conveyor, the upper run of which traverses longitudinally of the machine beneath the cut-off knives, an oscillating lever for actuating the feed carriage with a broad aperture therethrough to' accommodate the passage of the said endless conveyor, and actuating means for said lever comprising a crankshaftwith adjustable wrist pin disposed beneath the said conveyor to actuate the said oscillating lever.

2. In a machine of the class described, the combination of a printing press, a roll support at the receiving end with a roll of paper thereon, a pair of holding jaws beyond the said press, a feed carriage, a pair of feed jaws carried by said carriage to reciprocate to and from the said holding jaws for pulling the paper web therethrough,'cam means for controlling the said jaws, pairs of cut-off knives for severing sheets'from said web beyond said holding jaws, a striker to act on the severed sheet next the feed jaws, cam means for actuating the same 'to cause it to'act upon the cut-off sheet at the time'it is released by the said feed jaws, a live roll in advance of each cut-ofi shearto .assistin delivering "the sheets and discharging static electricity, a longitudinal endless conveyor, the upper run of which traverses longitudinally of the machine beneath the cut-off knives, an oscillating lever for actuating the feed carriage with a broad aperture therethrough to accommodate the passage of the said endless conveyor, and actuating means for said lever comprising a crankshaft with an adjustable wrist pin disposed beneath the said conveyor to actuate the said oscillating lever.

3. In a machine of the class described, the combination of a printing press, a roll support at the receiving end with a roll of paper thereon, a pair of holding jaws beyond the said press, a feed carriage, a pair of feed jaws carried by said carriage to reciprocate to and from the said holding jaws for pulling the paper web therethrough, cam means for controlling the said jaws, pairs of cut-off knives for severing sheets from said web beyond said holding jaws, a live roll in advance of each cut-ofl shear to assist in delivering the sheets and discharging static electricity, a longitudinal endless conveyor, the upper run of which traverses longitudinally of the machine beneath the cut-off knives, an oscillating lever for actuating the feed carriage with a broad aperture therethrough to accommodate the passage of the said endless conveyor, and

actuating means for said lever.

4. In a machine of the class described, the combination of a printing press, a roll support at the receiving end with a roll of paper thereon, a pair of holding jaws beyond the said press, a feed carriage, a pair of feed jaws carried by said carriage to reciprocate to and from the said holding jaws for pulling the paper web therethrough, cam means for controlling the said jaws, pairs of cut-ofi knives for severing sheets from said web beyond said holding jaws, a striker to act on the severed sheet next the feed jaws, cam means for actuating the same to cause it to act upon the cut-ofi sheet at the time it is released by the said feed jaws, a longitudinal endless conveyor, the upper run of which traverse longitudinally of the machine beneath the cut-ofi knives, an oscillating lever for actuating the feed carriage with a broad aperture therethrough to accommodate the passage of the said endless conveyor, and actuating means for said lever comprising a crankshaft with an adjustable wrist pin disposed beneath the said conveyor to actuate the said oscillating lever.

5. In a machine of the class described, the combination of a printing press, a roll support at the receiving end with a roll of paper thereon,

a pair of holding jaws beyond the said press, a

feed carriage, a pair of feed jaws carried by said carriage to reciprocate to and from the said holding jaws for pulling the paper web therethrough, cam means for controlling the said jaws, pairs of cut-off knives for severing sheets from said web beyond said holding jaws, a longitudinal endless conveyor, the upper run of which traverses longitudinally of the machine beneath the cut-- of! knives, an oscillating lever for actuating the feed carriage with a broad aperture therethrough to accommodate the passage of the said endless conveyor, and actuating means for said lever.

6. In a machine of the class described, the combination of a printing press, a roll support at the receiving end with a roll of' paper thereon, a pair of holding jaws beyond the said press, a feed carriage, a pair of feed jaws carried by said carriage to reciprocate to and from the said holding jaws for pulling the paper web therethrough, cam means for controlling the said jaws, pairs of cut-ofl' knives for severing sheets from said web beyond said holding jaws, a longitudinal endless conveyor, the upper run of which traverses longitudinally of the machine beneath the cutoff knives, and an oscillating lever for actuating the feed carriage with a broad aperture therethrough to accommodate the passage of the said endless conveyor.

'7. In a machine of the class described, the combination of a printing press, a roll support at the receiving end with a roll of paper thereon, a pair of holding jaws beyond the said press, a feed carriage, a pair of feed jaws carried by said carriage to reciprocate to and from the said holding jaws for pulling the paper web therethrough, cam means for controlling the said jaws, pairs of cut-01f knives for severing sheets from said web beyond said holding jaws, and a longitudinal endless conveyor, the upper run of which traverses longitudinally of the machine beneath the cut-off knives.

8. In a machine of the class described, the combination of a printing press, means for delivering a paper web therethrough, a pair of holding jaws upon the said press, a feed carriage, feed jaws carried by the said carriage, a striker to act upon the severed sheet next the feed jaws, and cam means for actuating the same to cause it to act upon the cut-off sheet at the time it is released by the said feed jaws.

9. In a machine of the class described, feed means for advancing the web, cut-01f shears for cutting off sheets, and a live roll associated with each cut-01f shear to assist in delivering the sheet and in discharging static electricity.

10. In a machine of the class described, the combination of a printing press, means for delivering a web therethrough, cut-off shears for the said web, a feed carriage carrying feed jaws for delivering the paper to the said cut-off shears, a longitudinal conveyor under the said cut-ofi shears, and an oscillating operating lever for actuating the said feed carriage fulcrumed in the lower part of said frame and provided with a broad aperture for the accommodation of said conveyor.

11. In a machine of the class described, the combination of a printing press, means for delivering a web therethrough, cut-off shears for the said web, a feed carriage carrying feed jaws for delivering the paper to the said cut-off shears, a longitudinal conveyor under the said cut-off shears, an oscillating operating lever for actuating the said feed carriage fulcrumed in the lower part of said frame and provided with a broad aperture for the accommodation of said conveyor, and a spring connection for the upper end of the said lever to the said carriage comprising a connecting link through the said lever having cushion springs thereon at each side.

12. In a machine of the class described, the combination of a printing press, means for delivering a web therethrough, cut-off shears for the said web, a feed carriage carrying feed jaws for delivering the paper to the said cut-ofi shears, an oscillating operating lever for actuating the said feed carriage, and a spring connection for the upper end of the said lever to the said carriage comprising a connecting link through the said lever having cushion springs thereon at each side.

ARTHUR ROSENTHAL.

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