US1935051A - Printing-press - Google Patents

Description

Nov. 14, 1933. c. w. HARROLD PRIN TING PRESS Filed Aug. 11. 1931 2 Sheets-Sheet l INVENTOR CHARLES W. HARROLD ATTOR Y NOV. 14, 1933. c w HARROLD- 1,935,051

2 Sheets-Sheet 2 F/GZ.

' INVENTOR CHARLES WHARKOLD J L; A

BY HIS ATTORW/ Patented Nov. 14 1933 i UNITED STATES PATENT OFFICE PRINTING-PRESS Charles Harrold, Cleveland, Ohio, assignor to Harris-Seybold-Potter Company, Cleveland, Ohio, a corporation of Delaware Application August 11, 1931. Serial No. 556,361

17 Claims. (Cl. 101-174) My invention relates particularly to sheet-fed after receiving sheets in each pile delivery from rotary printing-presses, and more especially to its particular feeder again to run the same pile a multicolor rotary press equipped with a doublethrough the same feeder under the same regsired impression cylinder. istering conditions as is required for high-class The objects of my invention are, among other color work, and in conjunction with these adthings, to provideanovel and simplified printingvantages both the feeding and delivery of the press of this type which is equipped with two sheets are operating approximately at half the separate feeders which forward the sheets alterprinting speed. I nately from separate piles to the impression cyl- With these and other objects and advantages l0 inder at the same pointand from a common feed in view, my inventioncomprises the structural cylinder that receives the sheets from both feedlay-out and construction of the operating parts ers. After printing the sheets are transferred forming my improved printing-press herein from the impression cylinder to a common de .shown and hereinafter to be described as a prelivery cylinder from which the sheets are alterferred embodiment of my invention. l5 nately taken by separate deliveries running at In the drawings, Figs. 1 and 2 are side elevaapproximately half speed, and such printed sheets tion views of my improved press shown as a comare then delivered on separate piles from the posite; Fig.1 shows the two feeders and the printtwo separate deliveries operated at such reduced ing members while Fig. 2 shows the two deliveries, speeds. the sheets passing from right to leftthrough the 20 It has been found that the primary limiting press as a whole shown in the combined figures. factor of the operating speed of rotary printing- Similar numerals refer to similar parts throughpresses resides in the maximum speed at which out the two figures. the printed sheet can be delivered to the pile Referring to Fig. 1, t e impression Cylinder 3 flat and properly jogged, since automatic sheet rotates inthe direction of the arrow and carries 25 feeders as a, rule will operate at higher speeds the tWO impression 51111530884 and 5provided With than pile deliveries. One of the objects of my the usual gripp 6 and pectively. The minvention is to provide a press with separate pression cylinder 3 is double-sized or twice the deliveries whereby it is possible nearly to double diameter of the twosuperpes d Plate eylinders'B the output of the press without increasing the d 9 of a the diameter of the impression 3' 30 speed t h h th printed h t reaches th inder 3 and having their shafts mounted in the delivery pi1es eccentric'bushings 10 and 11 respectively. These A further novel feature of my invention is bushings 10 and 11 are provided with the arms found in mounting the pair of plate cylinders 12 and 13 actuated by rods 14 and 15 respectively, in eccentric bushings t alternate tripping these rods being actuated and controlled in the 3 mechanism operated and controlled by the press usual y t p e p ate cylinders 8 and 9 whereby it is possible to print one form on sheets from the impression Cylinder 3 alternately as advanced from the first feeder and another form requiredh Plate Cylinders 8 and 9 otate in on sheetsfrom the second feeder alternately by the direction of the arrows as w d e using the alternate throw-01f and throw-on of provided With the usual inking form rollers 6- 40 the two plate cylinders (half the diameter of The particular form of inking m chanism for the the impression cylinder) upon each revolution Cylinders 8 and 9 is not a p t ve on of the impression cylinder, or, on the other hand, and s0 is not further indicated in the drawings. print two forms on the same side of each, sheet on the right of 1 are the WO pa ate feedas in the ordinary, two-color press, ers A and B arranged in staggered relation to each 45 A further novel. feature resides in having the other. The upper feeder A comprises the feedfeed cylinders that take the sheets from the table 7 W p e of paper ts 8 above which separate feeders rotate at the face speed of the is the sheet separator 19 Which y be a bprinting cylinders, but the separating and reging roll or suction feed cylinder to advance the istering devices for each feeder operate at halfsuccessive sheets along the tapes 20 between 50 speed, which arrangement gives double time for feeding rollers 21 and 22 to the front and side front and side registration of the sheets before registering devices indicated by the rollers 23 gripped by the feed cylinders to be carried to and 24. h the impression cylinder for printing. In com- Any type of sheet separator for advancing the bination with the half-speed deliveries mensuccessive sheets from the pile 18 may be used, 55 tioned, my improved press enables the operator the separator 19 as shown serving as a diagram-- 22 r,ese,osr matic illustration of such device. The sheets or reduced speed upon their respective piles i0 having been registered at the forward end of the tapes 20 are successively taken. by the grippers 25 on the first feed cylinder 26 (of the same size as the plate cylinders 8 and 9) and then are transferred to the second feed-cylinder 27 having the grippers 28 which deliver the sheets to the grippers 6 or '7 of the impression surfaces i or 5 of the impression cylinder, 3 in suitable timed relation with these impression surfaces. The feed. cylinders 26 and 27 revolve at the face speed of the plate cylinders 8 and 9 in the direction shown by the arrows. In the feeder B the sheets from the pile 29 on the feed table 30 are forwarded by the sheet separator 31 to the tapes 32 between feeding rollers. 33 and 34 to the front and side registering devices 35 and 36 from which the sheets are taken by the grippers 28 of the feed cylinder 2'? and delivered to the impression cylinder 3 in the same manner as sheets advanced and delivered by the feeder A.

Below the impression cylinder 3 is the delivery cylinder 37 having the grippers 38 which take the successive sheets from the grippers 6 and 7 of the impression cylinder and then transfer same alternately to the separate deliveries C and D arranged like the feeders A and B in staggered relation to each other. The two deliveries C and D are constructed substantially alike. Referring to both Figs. 1 and 2 and the upper delivery 0, the \l-belt carriers d0 pass in pairs around the reel ll having the grippers 42 which coact with the grippers 38 (Fig. l) to take the sheets from the delivery cylinder 37 and carry same beneath the rubber drive wheels d3 superposed above the reel 41 and belts 40, the sheets passing to the left (Fig. 2) between the belts .0 and superposed endless tapes 44 at surface speed.

Such sheets then overtake the grippers 45 on the endless delivery chains 46 (seven sets of grippers 45 being shown in Fig. 2) that pass around the sprockets l7 and 48; these chains i6 are adapted to be driven approximately at half speed relatively to the belts 40. The chains 46 carry the sheets to the left and. the grippers 45 are opened in the usual way to deposit the sheets on the pile 49.

Referring again to Figs. 1 and 2, the delivery D comprises the V-belt carriers 50 passing in pairs around the reel 51 having the grippers 52 which coact with the grippers 38 on the delivery cylinder 3'7 at a point lower than for the delivery C (Fig. 1). The rubber drive wheels 53 located above the reel 51 press the sheets against the belts 50 and such sheets travel at surface speed toward the left beneath the endless tapes 5d. The sheets then overtake the grippers 55 on the endless delivery chains 56 (four sets, of grippers 55 being shown in Fig. 2) that pass around the sprockets 57 and 58 and are driven approximately at half speed relatively to the belt-carriers 50. The delivery chains 56 carry the sheets on their lower runs with the grippers 55 opening in the usual way to deposit the sheets on the pile 59. The rollers 60 and 61 are idlers supporting the belts 4:0 and 50 respectively adjacent the sprockets J and 57.

It will be noted that in both deliveries C and D, the sheets are taken from the delivery cylinder 3'1 at face or surface speed of the press, and after a short run on the \I-belt carriers 40 and 50 respectively at such surface speed are fed into the grip pers 45 and 55 respectively mounted on delivery chains 46 and 56 respectively for delivery at slow and 59.

In like manner the sheets are advanced to the press by the feeders A and B at approximately half the printing speed which factor is important in giving double time for front and side regis tration of the sheets before being taken by the feed cylinders 26 and 27 respectively. Furthermore by using the eccentric bushings 10 and ll on the single-sized plate cylinders 8 and 9 and double-sized impression cylinder 3 with alternate tripping of these plate cylinders according to wellknown mechanism that need not be de scribed, it is possible for the pressrnan to print one form on the sheets from feeder A and another form on sheets from feeder B alternately by using alternate throw-off and throw-on of the plate cylinders 8 and 9 in each revolution of the impression cylinder 3, or print two forms (on plate cylinders 8 and 9) on the same side of each sheet.

The operation of my improved printing-press has been surliciently set forth in the foregoing description, and the advantages derived from the use of this press may be shown from the following: Assuming that 6,000 sheets are to be printed, 3,000 sheets would be placed in each feeder A and B and run through the press from these feeders only once to result in securing the 6,000 sheets printed in two colors, or 12,000 printed impressions with only one registration of plates on the cylinders 8 and 9. Furthermore in both forms of operatic-n which have been referred to when the press is delivering 6,000 sheets per hour, the sheet separators and registering devices in both feeders A and B are operating at only 3,000 sheets per hour, but the feed cylinders 26 and 2'? are rotating at twice this speed, each taking a sheet from its respective piles 18 and 29 once in two revolutions. The face speed of all the cylinders comprising the press proper is the same, being 3,000 for the double-sized cylinders and 6,000 for the single-sized cylinders, but with the sheets slowed down on the delivery chains 46 and 56 to be delivered at approximately the same speed as they were forwarded to the feed cylinders 26 and 27 for printing from the feeders A and B.

It is obvious that sheet detectors and their associated trip mechanisms as commonly used in sheet-fed rotary presses may be embodied in my press, but such structural details are not shown as being well-known in the art, and therefore need not be explained.

My invention, in its broader aspects, is not limited to the particular construction and arrangement of cylinders and other associated parts shown, as many changes may be made without departing from the scope of the invention and without sacrificing the chief advantages derived from its use in a rotary press.

I claim as my invention:--

1. In combination a printing couple comprising an impression cylinder having a plurality of impressionsurfaces and a like plurality of printing members coacting therewith, a plurality of feeding devices for advancing sheets alternately to a gripper feed cylinder to be taken therefrom by said impression cylinder, a delivery cylinder, and a like plurality of deliveries taking the printed sheets alternately from said delivery cylinder.

2. In combination a printing couple comprising an impression cylinder having a plurality of impression surfaces and a like plurality of printing members coacting therewith, a plurality of feeding devices for advancing sheets alternately to a gripper feed cylinder to be taken therefrom at a common point on the impression cylinder; a delivery cylinder, and a like plurality of deliveries taking the printed sheets alternately from said delivery cylinder.

3. In combination a printing couple comprising an impression cylinder having a plurality of impression surfaces and a like plurality of printing members coacting therewith, a plurality of feeding devices for advancing sheets alternately to a gripper feed cylinder to be taken therefrom by said impression cylinder, a deliverycylinder, and a like plurality of deliveries taking the printed sheets alternately from different points on said delivery cylinder.

4. In combination a printing couple comprising an impression cylinder having a plurality of impression surfaces and a like plurality of printing members coacting therewith, a plurality of feeding devices for advancing sheets alternately to a gripper feed cylinder to be taken therefrom at a common point on the impression cylinder, a delivery cylinder, and a like plurality of deliveries taking the printed sheets alternately from different points on said deliverycylinder.

5. In combination a pair of plate cylinders and a double-sized impression cylinder having two impression surfaces coacting with said plate cylinders, two separate means for feeding sheets alternately to a gripper feed cylinder to be taken therefrom by said impression cylinder at a common point, a delivery cylinder coacting with the impression cylinder, and two separate deliveries for taking the printed sheets alternately from said delivery cylinder.

6. In combination a pair of plate cylinders and a double-sized impression cylinder having two impression surfaces coacting with said plate cylinders, two separate means for feeding sheets alternately to a gripper feed cylinder to be taken therefrom by said impression cylinder at a common point, a delivery cylinder coacting with the impression cylinder, and two separate deliveries for taking the printed sheets alternately from said delivery cylinder and depositing same at approximately half the speed of said delivery cylinder.

7. In combination a pair of plate cylinders and a double-sized impression cylinder having two impression surfaces coacting with said plate cylinders, two separate means for feeding sheets alternately to a gripper feed cylinder to be taken therefrom by said impression cylinder, a delivery cylinder coacting with the impression cylinder,

- and two separate deliveries for taking the printed sheets alternately from said delivery cylinder.

8. In combination, a pair of plate cylinders and double-sized impression cylinder having two impression surfaces coacting with said plate cylinders, two separate means for feeding sheets alternately to a common feed cylinder to be taken therefrom by said impression cylinder, and sheet separators for advancing sheets "to said sheet feeding means operating at approximately half the speed of said common feed cylinder. v

9. In combination, a pair of plate cylinders and a double-sized impression cylinder having two impression surfaces coacting with said plate cylinders, a delivery cylinder coacting with said impression cylinder, and two separate deliveries for taking the printed sheets alternately from said deliverycylinder and depositing same at approximately half the speed of said cylinders.

10. In combination, a pair of plate cylinders and a double-sized impression cylinder having.

two impression surfaces coacting with said plate cylinders, two separate means for feeding sheets alternately to a common feed cylinder to be taken therefrom at a common point on said impression cylinder, a delivery cylinder coacting with said delivery cylinder, and two separate deliveries taking the printed sheets alternately from said delivery cylinder, said deliveries operating at approximately half the speed of said cylinders.

11. In combination, a printing couple comprising a double-sized impression cylinder having two impression surfaces and a pair of single-sized plate cylinders coacting with said impression surfaces, a gripper feed cylinder to deliver sheets to said impression cylinder, and two separate means for feeding sheets in alternate succession to said gripper cylinder, two sheet separators for advancing sheets to said sheet feeding means, said sheet separators operating at approximately half the speed of said cylinders.

12. In combination, a printing couple comprising a double-sized impression cylinder having two impression surfaces and a pair of single-sized plate cylinders coacting with said impression surfaces, a gripper feed cylinder to deliver sheets to said impression cylinder, another gripper feed cylinder delivering sheets to said first feed cylinder, and two separate means for feeding sheets in alternate succession to said gripper cylinders, two sheet separators for advancing sheets to said sheet feeding means, said sheet separators operating at approximately half the speed of said gripper feed cylinders.

13. In combination, a printing couple comprising a double-sized impression cylinder having two impression surfaces and a pair of single-sized plate cylinders coacting with said impression surfaces, two separate means for feeding sheets alternately from separate piles to a gripper feed cylinder to be taken therefrom by said impression cylinder at a common point, a gripper delivery cylinder adapted to take the printed sheets from said impression cylinder at a common point, and two separate deliveries for taking the sheets alternately from said gripper delivery cylinder and depositing same on separate piles.

14. In combination, a printing couple comprising an impression cylinder having a plurality of impression surfaces and a like plurality of printing members coacting therewith, a plurality of feeding devices for advancing sheets alternately to a gripper feed cylinder to be taken therefrom by said impression cylinder, said feeding devices operating at a speed slower than that of said gripper feed cylinder, a delivery cylinder, and a like plurality of deliveries taking the printed sheets alternately from said delivery cylinder, said deliveries depositing said sheets at a speed slower than that of said delivery cylinder.

15. In combination, a printing couple comprising an impression cylinder having aplurality of impression surfaces and a like plurality of printing members coacting therewith, a plurality'of feeding devices for advancing sheets alternately to a gripper feed cylinder to be taken therefrom by said impression cylinder at a common point, said feeding devices operating at a speed slower than that of said gripper feed cylinder, a delivery cylinder taking the printed sheets from said impression cylinder at a common point, and a like plurality of deliveries taking the printed sheets alternately from said delivery cylinder, said deliveries depositing said sheets at a speed slower than that of said delivery cylinder.

16. In combination, a printing couple comprising an impression cylinder having a plurality of impression surfaces and a like plurality of printing members coacting therewith, a plurality of feeding devices for advancing sheets alternately to a gripper feed cylinder to be taken therefrom by said impression cylinder, said feeding devices operating at a speed slower than that of said gripper i'eed cylinder, a delivery cylinder, and a like plurality of deliveries taking the printed sheets alternately from different points on said delivery cylinder, said deliveries depositing said sheets at a speed slower than that of said delivery cylinder.

17. In combination, a printing couple comprising an impression cylinder having a plurality of impression surfaces and a like plurality of printing members coacting therewith, a plurality of feeding devices for advancing sheets alternately to a gripper feed cylinder to be taken therefrom by said impression cylinder at a common point, said feeding devices operating at a speed slower than that of said gripper feed cylinder, a delivery cylinder taking the printed sheets from said impression cylinder at a common point, and a like plurality of deliveries taking the printed sheets alternately from different points on said delivery cylinder, said deliveries depositing said sheets at a speed slower than that of said deliv-- ery cylinder.

CHARLES W. HARROLD.

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