US2020124A - Means of feeding webs of paper to printing presses - Google Patents

Description

Nov. 5, 1935.K A. RosEN'rHAL `MEANS OF FEEDING WEBS OF PAPER TO PRINTING PRESSES Filed May 21, 1932 5 Sheets-Sheet 1 ATTORNEY 5 Nov. 5,1935 A. RosENTHAL 2,020,124

MEANS OF FEEDING WEBS OF PAPER TO PRINTING PRESSES Filed May 21, 1932 v 5 Sheets-Sheet 2 INVENTOR Erf/1w Rosenthal ATTORNEY 9 www.,

Nov. 5, 1935. A. RosENTHAL 2,020,124

MEANS OF' FEEDING WEBS OF PAPER TO PRINTING PRESSES Filed May 21, 1952 5 sheets-shea 5 QQQW w m ATTORNEY S Nov. 5, 1935. A. RosENTHAL *2,0201l24 MEANS OF FEEDING WEBS OF PAPER TO PRlNTING PRESSES I Filed May 21, 1932 5 sheets-sheet' 4 Q ITTTI V l TNA TIME II A A I z z 1 s I 1 s s I s I s i I 1 I I I l 1 1 I 1 1 l l l 1 1 I I 1 1 i 1 I I I l i l n I n I l i l 7 Q LA s v INVENTOR 4 5C /rzha werzha/ I 1 BY v I v I 1 1 l A l l l I 1 n I I 1 Y I l I n I 5 n 1 l ATTORNEYS Nov. 5, 1935. yA. RosENTHAL 2,020,124

MEANS OF FEEDING WEBS OF PAPER TO PRINTING PRESSES Filed May 2l, 1932 5 Sheets-Sheet 5 l ATTORNEY Patented Nov. 5, 1935 MEANS OF FEEDING WEBS OF PAPER T0 PRINTING PRESSES Arthur Rosenthal, Grand Rapids, Mich., assignor to The Rose Patch & Label Company, Grand Rapids, Mich.

Application May 21, 1932, Serial No. 612,678

14 Claims. (Cl. 101 292) This invention relates to improved means of Y feeding webs of paper to printing presses. It relates particularly to means for feeding a single web to a press and Cutting single sheets therefrom expeditiously and effectively.

The objects of the invention are:

First, to provide improved means for advancing the sheet or web through the printing press without distortion from undue tension.

Second, to provide improved means topull the web and improved jaws for that purpose.l

Third, to provide improved means for guiding the end of the web to the cut-off knife.

Fourth, to provide improved means for operating the feeding and holding jaws for the web.

Further objects and objects relating to details and economies of construction and operation will appear from the description to follow. A preferred embodiment of my invention is illustrated in the accompanying drawings, in which:

Fig. 1 is an elevation of a printing press structure with my improved feed mechanism in position, the drier being broken away and the printing press not involved in the invention being shown in dotted lines.

Fig. 2 is a longitudinal diagram'of the entire structure, a part of the drier being broken away.

Fig. 3 is an enlarged detail plan view of the main feed part shown in its relation to the printing press and to the drier.

Fig. 4 is an enlarged detail vertical longitudinal section taken on line 4 4 of Figs. 3, 6, and 7, detailing the feed jaws, the holder jaws, and the actuating means for the holding jaws, and Vcross section through the cut-off knives and the discharge conveyor.

Fig. 5 is a similar enlarged detail sectional view on irregular line 5 5 of Figs. 3, 6 and 7, which partially coincides with line 4 4, looking in the Y opposite direction, showing details of the means forl controlling the feed jaw and the cams and stops in that relation.

Fig. 6 is an enlarged detail transverse sectional elevation on the irregular line 6 6 of Figs. 1, 3, 4 and 5, showing the means for operating the cutoff knife and the feed slide and connection for reciprocating the said feed slide."

Fig. 7 is an enlarged detail transverse sectional View on the irregular section line 'I 'I of Figs. 1, 2, 3, 4 and 5, showing details of both the holding and feed jaws and the mechanism and guides in that behalf.

Fig. 8 is an enlarged detail perspective View of the holding jaws and means for actuating the same.

Fig. 9 is a detail sectional elevation on line 9 9 of Fig. 3, showing the cam and adjustable means for reciprocating the feed carriage.

'I'he parts will be identified by their numerals of reference which are the same in all the views. 5 I is a printing press indicated by dotted lines.

Supported at the intake or feed end of the printing press, is the auxiliary feed. This comprises a pair of frictionk feed rollers 2, 3 which deliver the web 4 from the roll or drum 5, drop the webin 10 a loop 4 between the rolls and the printing press so that when the web is grasped and pulled through by the feed jaws, there is no undue tension and the sheet lies flat at the printing point. The printing press is of a well known design of l5 intaglio press, having the die 6','and counter 6 of usual construction.

The main feed device is at the discharge end of the press. It comprises a base 1- supported on suitable posts 8 (Fig. 1). On the base 'I are lon- 20 gitudinal side members 9 and Il] which are connected by a top cross bar II which carries the fixed cut-off knife I2 (see Fig. 4) I3 is the reciprocating cut-off knife carried by the knife holder bar I4. This holder reciprocates in ver- 25 tical guides I5, I6 which are connected by the cross bar I l. Pairs of toggle arms I8, I 8y and I9, I 9 connect the said knife I3 to the cross bar I'I. The central pivots 20', 20 of the toggles are connected by the horizontally disposed actuating 30 bar 2| which is pulled normally to the right by spring 22 to lower the knives (see Figs. 3 and 6).

A bent lever 23 is fulcrumed at 24 and is provided with a cam roller 25. 'I'he upper arm of the lever is connected by slot 23I to pin 2II on bar 2|. 35 The lever is actuated by cam 26 on shaft 2'I driven by bevel gears 28, 29 from counter shaft 30.

The feed table is made up of a pair of plates 3I, 32 which are secured to the cross bar or member I2 by countersunk screws 33. The oppo- 40 site ends of these plates extend to and rest upon the supporting ledge 34 which is carried by vertical plate 35 and is secured by cap screws 33 to the frame of the printing press.

A flexible paper guiding blade 31 is carried by 45 the` lateral arm 38 secured to the frame of the printing press by screws 39. This blade 3'I extends above and parallel t0 the plate 3|, resting A with gentle pressure on the web of paper as it is being advanced. 50

The plates 3| and 32 are spaced apart at the center to accommodate the holding and feed jaws. The feed jaws are carried on a reciprocating slide 40 which reciprocates in suitable slide ways 4I formed on the lateral extension 42 of the 55 side member 9. These jaws comprise the relatively fixed jaw 43 bolted to the slide 40 and having the disk-like engaging portion 44 projecting upwardly between the plates 3|, 32 and on a level with the upper surface thereof. The upper movable jaw 45 is pivoted to the lateral arm 46 by pivot pin 41 and is provided with an engaging disk portion 48 to cooperate with the portion 44. The movable jaw 45 is provided with an upwardly projecting arm 45|, the upper end of which is provided with a stud 452. A tension coil spring 453 connects the same to a stud 454 on the lower jaw member, whereby the upper jaw is normally held by spring pressure in engagement with the lower jaw.

These jaws are operated by cam slide 49. This slide is disposed in ways 59 on bracket 5| carried by the slide 40. The end 49| of the slide 49 projects downward and is engaged by the trip stops 52 and 52| carried on the slide 53 at opposite ends thereof.

The slide 53 is supported by brackets 54, 55. Slide 53 is pulled normally forward by the tension spring 53| (see Fig. 5). The slide 53 is provided with a downwardly projecting cam follower nger 532. This is reacted upon by cam 56 which is carried on shaft 3D. This cam causes the bar to reciprocate to actuate the trips 52 and 52| at the ends of the feed stroke.

The feed slide 40 is provided with a downwardly projecting ear 40|. This is provided with pitman 402 which connects to the upper end of the lever 51. Lever 51 is fulcrumed at 51| on the base of the machine. This lever is operated by pitman 5B which is pivoted at 58| to the lever 51 and is adjustably connected at 582 to the cam rocker 59. This cam rocker is operated by the feed cam 60 on shaft 39 (Figs. 3 and 9). The cam 60 is so timed that there is a short dwell at each end of the feed stroke during which period the feed jaws operate. The cam 56 operates upon the slide 53 to actuate the feed dogs to open or close the same while the feed slide is at rest at each end of its travel. It will be seen that by this operation the paper is evenly grasped and released by the feed dogs while the dogs are relatively at rest in relation thereto.

The holding jaws are supported on the opposite side of the machine from the feed jaws. They comprise the fixed jaw 6| and the movable jaw 62. The fixed jaw has engaging disk 6H, the upper surface of which is level with the feed table top. The movable jaw has engaging disk 62| (Fig. 4). The upper jaw 62 is pivoted at 622 on the projecting arm 6|2 (Fig. 7). Jaw 62 is held normally closed by compression spring V623 on bolt 624. The tension is adjustable by the wing nut 625.

These holding jaws are operated by the cam slide 63. This is supported in slide ways in the bracket 64 which is held adjustably in place on the side of the frame by the cap screw 65. The end 63| of the slide 63 is bent at right angles and projects downwardly forming a trip finger, and is engaged by the trip stops 66 and 61 (Fig. 4). These stops are carried on the slide 68. Stops 66 and 61 are provided with adjusting screws 66| and 61| respectively, to permit a very close regulation of the operation of these holding jaws.

The slide 68 is supported by brackets 69, 10 having ways therefor. The slide 68 is pulled normally forward by the tension spring 1| (Fig. 4). The slide 68 is provided with a downwardly projectingv cam follower finger 68|. This is reacted upon by cam 12 which is disposed on countershaft 30 the same as cam 56. This cam 12 causes veyor 13 to the endless conveyor 14 which travels through a drier 15 to dry the same. This drier may be heated by electricity or gas or in any desired manner.

From the descriptions of the parts, the operation of my improved machine will be readily understood. The parts are connected and timed to be driven in any suitable manner, which I have not deemed it necessary to illustrate.

In operation, the paper web 4 is threaded from roll 5 through the auxiliary friction rolls 2, 3 and is extended into a loop 4 between the said rolls and the printing press and is passed through the press to the cut-off shear. In initial position, the web 4 is clamped and held by the holding jaws 6|, 62. The feeding jaws are then open and are moved to the initial position, when their cam mechanism causes them to close and the broad at surfaces of the jaws to engage the sheet between the table plates 3|, 32. Immediately thereafter, the holding jaws are opened by their cam means and the feed jaws are then advanced by the advancing of the slide 46 through the action of cam 60 and its connections. The paper web is guided along the table by the flexible guiding spring 31 which permits the forward end of the sheet to be guided and advanced beyond the cut-off knife I3. When the feed jaws have reached the forward end of their stroke, the cut-off knife descends and cuts off the sheet which immediately drops onto the end of the endless conveyor 13 which carries the same forward quickly to the drier conveyor 14. As soon as the sheet drops, the holding jaw 62 closes down and the feed jaw 45 is raised and opened, and the feed jaw is then carried back to its initial position, when the trip means causes it to close, and immediately thereafter the holding jaws are opened by the action of their cam meenanism and the cycle repeated.

Thus, it is seen that the sheet is very simply and readily advanced without the need of special gripper to seize the end of the sheet, and the free end of the web is fed forward and effectively guided to the cut-off knife and the cut-off sheet is at once delivered straight ahead to a suitable drier. This enables intaglio printing to be done rapidly, economically, and automatically without the necessity of the hand feeding the press.

The feed means is especially adapted to single sheet printing but can be adapted to multi-color work, if desired.

I have shown the mechanism in the specific form developed by me, which has proved to be highly effective in use. I desire to claim that specific mechanism. I also desire to claim the invention broadly, as pointed out in the appended claims.

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

1. The combination of a printing press having an auxiliary web feeding device comprising a pair of feeding rolls delivering the web of paper into a slack loop and thence to the press, a main feeding device to carry the paper from the press comprising a frame with a pair of plates forming a table with a longitudinal open space in the center, a yielding guide blade suitably supported and extended forwardly and resting on the plate at one side of said table, a cut-off knife at the discharge end of said table, a pair of holding jaws comprising broad flat disk-like engaging contacts toward the receiving end of said table disposed within the longitudinal open space, trip cam means to actuate the same to hold the paper and Vto release it when paper is being advanced, a pair of feed jaws with broad flat disk-like engaging means adapted to traverse the longitudinal open space of said table, a slide at one side of the said table to carry said feed jaws, means to actuate the said feed jaws to cause them to engage the paper toward the receiving end of said table, means to advance said feed jaws along the longitudinal open space to push a sheet of paper beyond the cut-off knife, trip means to cause the feed jaws to release the paper at the end of the feed motion, and an endless conveyor means for receiving the cut-Off sheets and conveying them to a drier.

2. The combination of a printing press having an auxiliary web feeding device delivering the web of paper into a slack loop and thence to theV press, a main feeding device to carry the paper from the press comprising a frame with a pair of plates forming a table with a longitudinal Open space in the center, a yielding guide blade suitably supported and extended forwardly and resting von the plate at one side of said table, a cut-off knife at the discharge end of said'table,

`a pair of holding jaws comprising broad flat disk-like engaging contacts toward the receiving end of said table disposed within the longitudinal open space, trip cam means to actuate the same to hold the paper and'to` release it when paper is being advanced, a pair of feed jaws with broad flat disk-like Vengaging means adapted to traverse the longitudinal open space of said table, a slide at one side of the said table to carry the said feed jaws, spring means to hold L the jaws in closed position, trip cam means to permit said spring means to actuate the said y jaws to close them to engage the paper toward 50. "1 to push a sheet of paper beyond the cut-off knife,

the receiving end of said table, means to advance said feed jaws along the longitudinal open space trip means to release the feedrjaws at the end of the feed motion, and an endless conveyor means for receiving the cut-olf sheets and con- Veying them to a drier,

3. The combination of arprinting press having an auxiliary web feeding device delivering the web of paper into a slack Vloop and thence to the pressa main feeding device to carry the paper from the press comprising a frame with a pair of plates forming a table with a longitudinal open space in the center, a yielding guide blade suitably supported and extended forwardly and resting on the plate at one side of said table, aout-off knife at the discharge .end of. said table, a pair of holding jaws comprising broad fiat disk-like engaging contactstoward the receiving end of said table disposed Within the longitudinal open space, trip cam means to actuate the same to hold the paper and to release it when paper is being advanced, a pair of feed jaws with broad flat disk-like engaging means adapted to traverse the longitudinal open spaceV of said table, a slide at one side of the said table to carry the said feed jaws, spring means to hold the jaws in closed position, tripY cam means to permitk said spring means to actuate the said feed jaws to close them to engage the paper toward the receiving end of said table, means to advance said jaws along the longitudinal open space to push a sheet of paper beyond the cutoff knife, and trip means to release the feed jaws at the end of the feed motion.

4. The combination of a printing press having a main feeding device to carry the paper from the press comprising a frame with a pair of` plates forming a table with longitudinal open space in the center, a yielding guide blade suitably supported and extended forwardly and resting on the plate at one side of said table, a cut-olf knife at the discharge end of said table, a pair of holding jaws comprising broad flat disk-like engaging contacts toward the receiving end of said table disposed within the longitudinal open space, trip cam means to actuate the same to hold the paper and to release it when paper is being advanced, a pair of feed jaws with broad flat disklike engaging means adapted to traverse the longitudinal open space of said table, a slide at one side of the said table to carry said feed jaws, spring means to hold the jaws in closed position, trip cam means to permit said spring means to actuate the said feed jaws to close them to engage the paper toward the receiving end of said table, means to advance said feed jaws along the Vlongitudinal open space to push a sheet of paper beyond the cut-off knife, trip means to release the feed jaws at the end of the feed motion, and an endless conveyor means for receiving the cuto sheets and conveying them to a drier.

5. The combination of a printing press having a main feeding device to carry the paper from the press comprising a frame with a pair of plates forming a table with longitudinal open space in the center, a yielding guide blade suitably supported and extended forwardly and resting o-n the plate at one side of said table, a cutoff knife at the discharge end of s-aid table, a pair of holding jaws comprising broad flat disklike engaging contacts toward the receiving end of said table disposed within the longitudinal 'open space, trip cam means to actuate the same to hold the paper and to release it when paper is being advanced, a pair of feed jaws with broad flat disk-like engaging means adapted to traverse the longitudinal open space of' said table, a slide at one side of the said table to carry said feed jaws, spring means to hold the jaws in closed position, trip cam means to permit said spring means to actuate the said feed jaws to close them to engage the paper toward the receiving end of said table, means to adv-ance said feed jaws along the longitudinal open space to push a sheet of paper beyond the cut-olf knife, and trip means to release the feed jaws at the end of the feed motion. K

6. The combination of a printing press having a main feeding deviceto carry the paper from the press comprising a frame with a pair of plates forming a table with longitudinal open space in the center, a cut-off knife at the discharge end of said table, a pair of holding jaws comprising broad flat disk-like engaging contacts toward the receiving end of said table disposed within the longitudinal open space, trip cam means to actuate the same to hold the paper and to release it when lpaper is being advanced,

gaging means adapted to traverse the longitudinal open space ofV said table, a slide at one side of the said table to carry said feed jaws, spring Va pair of feed jaws with broad fiat disk-like ent means to hold the jaws in closed position, trip cam means to permit sai-d spring means to actuate the said feed jaws to close them to engage the paper toward the receiving end of said feed table, means to advance saidvjaws along the longitudinal open space to push a sheet of paper beyond the cut-off knife, and trip means to release the feed jaws at the end of the feed motion.

7. The combination of a printing press having a main feeding device to carry the paper from the press comprising a frame with a pair of pl-ates forming a table with longitudinal open space in the center, a yielding guide blade suitably supported and extended forwardly and resting on the plate at one side of said table, a cutoff knife at the discharge end of said table, a pair of holding jaws h-aving engaging contacts toward the receiving end of said table disposed within the longitudinal open space, trip cam means to actuate the same to hold the paper and to release it when paper is being advanced, a p-air of feed jaws with engaging means adapted to traverse the longitudinal open space of said table, a slide at one side of the said table to carry said feed jaws, means to actuate the said feed jaws to cause them to engage the p-aper toward the receiving end of said table, means to advance Said feed jaws along the longitudinal open space to push a sheet of paper beyond the cut-off knife,

.and trip means to cause the feed jaws to release the paper at the end of the feed motion.

8. The combination of a printing press having a main feeding device to carry the paper from the press comprising a frame with a pair of plates forming a table with longitudinal open space in the center, a cut-off knife at the discharge end of said table, a pair of holding jaws having engaging contacts toward the receiving end of said table disposed within the longitudinal open space,

trip cani means to actuate the same to hold the paper and to release it when paper is being advanced, a pair of feed jaws with engaging means adapted to traverse the longitudinal open space of said table, a slide at one side of the said table to carry said feed jaws, spring means to hold the jaws in closed position, trip cam means to permit said spring means to actuate the said feed jaws to close them to engage the paper toward the receiving end of said table, means to advance said jaws along the longitudinal open space to push a sheet of paper beyond the cut-off knife, and trip means to release the feed jaws at the end of the feed motion.

9. In a printing press feeding means, a pair of holding jaws comprising broad flat disk-like engaging contacts, spring means to hold them yieldingly together, a cam slide in a suitable bracket having an actuating trip finger and means to force the slide cam between the jaws to open the same, and cam means to withdraw the same to permit the jaws to close.

10. In a printing press feeding means, a pair of holding jaws comprising engaging contacts, springs means to hold them yieldingly together, a cam slide in a suitable bracket having an actuating trip finger and means to force the slide cam between the jaws to open the same, and cam means to withdraw the same to permit the jaws to close.

11. In a feed means for printing presses, the combination of a pair of feed jaws having broad at disk-like engaging means, a reciprocating slide to carry the same, spring means to hold the jaws in closed position, a cam slide means to actuate the said jaws, trip cam means for forcing the said cam slide between the jaws to open the same, and trip cam means to withdraw the cam slide to permit said spring means to close the same.

12. In a feed means for printing presses, the combination of a pair of feed jaws having engaging means, a reciprocating slide to carry the same, spring means to hold the jaws in closed position, a cam slide means to actuate the said jaws, trip cam means for forcing the said cam slide between the jaws to open the same, and trip cam means to withdraw the cam slide to permit said spring means to close the same.

13. In a paper feed means for printing presses, an auxiliary web feeding device comprising a pair of feeding rollers delivering the web of paper into a slack loop and a pair of feeding jaws beyond the press to advance the web of said slack loop through the press a predetermined distance after each impression of the press and to leave a new section of Webfor printing and to release the web and return said predetermined distance to grasp the web and advance the same, whereby the web is printed when it is substantially free

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