US433716A

US433716A - Paper-feeding mechanism for printing-machines

Info

Publication number: US433716A
Authority: US
Publication date: 1890-08-05
Anticipated expiration: 1907-08-05

Description

(N0 Medal.) 2 Sheets-Sheet 1. J. BROOKS. PAPER FEEDING MEGHANISM FOR PRINTING MACHINES.

No. 433,716. Patented Aug. 5, I890.

ATTORNEY WITNESSES: NVENTOR flflm 5 .46

Norms FEYERS cm, mmo-uwo., WASHINGTD" u c (No Model.) 2 Sheets-Sheet 2.

- J. BROOKS.

PAPER FEEDING MECHANISM FOR PRINTING MACHINES. No. 438,716. Patented Aug. 5, 1890.

WITNES SESf I ENTUH ATTORNEY UNITED STATES PATENT OFFICE.

JOHN BROOKS, OF PLAINFIELD, NEWV JERSEY.

PAPER-FEEDING MECHANISM FOR PRINTING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 433,716, dated August 5, 1890.

Application filed October 3, 1889.

To all whom it may concern:

Be it known that I, JOHN BROOKS, a citizen of the United States, residing at Plainfield, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Paper-Feeding Mechanism for Printinghlachines, of which the following is a specification.

My invention relates to cylinder printingpresses; and it consists in certain instrumentalities in connection with the feeding-cylinder, whereby the sheets may be supplied from a feed-table or from a web-cutting mechanism without altering the parts and be registered accurately before they are delivered to the impression-cylinder.

This invention is applicable to impressioncylinders having various motions, such as a continuous or an oscillating rotary motion. I herewith illustrate its application to continuous rotation, and describe one form of gripper mechanism adapted to seize and transfer the sheets at the proper time. In a separate application filed simultaneously herewith, Serial N 0. 325,893, I have described a feeding-cylinder of similar character, havlng intermittent rotation adapted to an oscillating impression-cylinder.

Referring to the accompanying drawings, in which like numerals indicate corresponding parts, Figure 1 is a side elevation of a machine embodying my invention. Fig. 2 is a detail View looking at the side of the feeding-cylinder, it being shown in part. Fig. is an enlarged side view in detail, showing the opposite ends of the cylinders from those shown in Fig. 1. Fig. 4 is a plan view in detail, showin g the gripper-operatin g mechanism on the impression-cylinder; and Fig. 5, an elevation in detail, looking endwise of the press, showing the gripper-operating mechanism 011 the feed-cylinder.

Fig. 1 shows a portion of a printing-press of a similar construction to that more fully illustrated in my Letters Patent No. 413,491, of October 22, 1889, and of which 2 represents the side frames; 3, the type-bed; 4, the gear of the impressioncylinder; 5, the driving-pulley, and 6 7 8 the train of gearing for driving the impression-cylinder from the shaft of said driving-pulley.

9 is the type-bed-driving shaft, which bears Serial No. 325,895. (No model.)

the gear 12, driven by the gear 6, and is capable of vertical oscillation on the trunnions 10.

11 represents the double-sided rack connected to the type-bed, upon the orbit of which rack a pinion on the inner end of the oscillating shaft 9 engages to reciprocate the typebed at thesurface speed of the impressioncylinder.

15 is the sha t for driving the paper-cutting and the impression -cylinder-elevating mechanism, and which receives its motion through a worm-gear 16 thereon and a worm 17 upon a transverse shaft 18, which bears a gear 14, driven from the gear 12 through the transmitting-gear 13.

20, Fig. 3, represents the impression-cylinder, of which 4 is the gear, and 21 represents a paper-delivering cylinder having grippers to seize and deliver the sheets, and of which 22 is the gear driven by the gear 4 and also by the transmitting-gear 23 from the drivinggear 6. The cylinder 21 may, however, be regarded as a second impression-cylinderin the instance of a perfecting-press.

25 represents my improved paper-feeding cylinder auxiliary to the impression-

cylinder

20, and 26 the gear fixed to the shaft being driven by the gear 4 of the said impressioncylinder.

The shafts 30 31 of the impression and feeding cylinders, respectively, are journaled in vertically-movable boxes 32 33, connected together by the frame-work 34 35 at each side of the machine. The upper box 33 and the weight of the feed-cylinder25 is counteracted by springs 40, while the lower box 32 is sustained upon the vertical shaft 41, counterbalanced 011 the springs 42.

The impression-cylinder is elevated out of printing-contact with the form-bed 3 by means of the revolving nut 45, screw-threaded to the shaft 41 and bearing pinion-teeth, whereby the rack 46 rotates it. The rack 46 is operated by the arm 47 and rod 48 from cams driven by the shaft 15, as illustrated in the said patent application No. 303,595, so as to lift the impression-cylinder when the high partor impressing-surface thereon passes opposite the form during the return-stroke of the latter and to lower the impression-cylinder into printing-contact at the proper time.

50 represents the feed-table, upon which ICO 5 Figs. 3, 4, and 5 herein.

the sheet may be fed to the feeding-cylinder by hand, and represents conveying-belts,by which the paper may be fed to the feedingcylinder automatically from a suitable web- 5 cutting mechanism, of which 55 represents the feed-rolls that carry the paper from the cutter. The idlers 56 on the arms 57 extend the conveying-belts 60 to a point near the feedgage directly under the-feed-table, the feedcylinder 25 being composed of aseries of rims or flanges having spaces between them, in which the idlers are located, as also the feed gage, as seen in Fig. 2.

The sheets delivered from the cutter are timed to arrive upon the feed-gage 70 at or immediately preceding the moment the grippers pass the same by the proper adjustment of the surface distance of the cutter from such gage at the time of cutting or by other well-known means.

One form of gripper-actuating mechanism applicable hereto is of a similar character to that referred to in said patent application No. 303,595, being practically illustrated in The grippers of the feeding-cylinder 25 are shown at 80 in a position corresponding with that of the machine in Fig. 1. The grippers of the' impressioncylinder 20 and the delivering-cylinder 21 are shown, respectively, at O0 and in positions also corresponding to Fig. 1. At 81 the grippers 80 are indicated in a position of transferring the head of 'the sheet from the cylinder 25 to the cylinder 20, and at 91 the grippers 90 are indicated at a position co-operative with the said grippers 80 at the position 81.

is a pinion upon the shaft 30 of theiinpression cylinder 20. 111 is a spurgear driven bythe said pinion, bearing a cam 112, Fig. 1, and turning upon a stud 113, projected from the frame 34.

115 is a spur-gear driven by the spur-gear 111, bearing a cam 116, Fig. 5, and turning upon a stud 117, also projected from. the frame 34.

- The ends of the shafts 121 122 bearing the respective sets of grippers SO 90 100 bear grooved blocks 123 124: 125 exterior to the cylinders. The grooved blocks 123 124 125 are tripped by engagementwith the sliding studs 131 132 133 134, so as to shiftthe grippers from an open to a closed position, or vice versa, when the said studs are brought into alignment With the open ends of the grooves in the blocks, the studs being located at different radial distances from the shafts of the cylinders to which they pertain, whereby'opposite open ends of the grooved blocks are acted on alternately in the usual manner to open or close the grippers, which are held in either position by springs. The cams 116 and 112, being geared to rotate at half the speed of the cylinders, will, through the shifting-levers 150, bring each stud 130 131 132 ]33into active position in the consecutive order named at every second revolution of the cylinders, thereby carrying the paper from the feed-gage over the feed-cylinder 25, under the impression-cylinder 20, and subsequently over the delivering-cylinder 21 by corresponding Working of the grippers 100. At every alternate or non-active revolution of the cylinders the same are raised out of prin ting-contact during the return-stroke of the type-bed.

The feed-gage 70 is swung to clear the paper in the usual manner by the movement of its shaft 71 through the lifter 72 from the cam 7 3.

represents a series of guides for directing the head of the sheetin its proper course upon the feed-cylinder.

In operation the sheet passes from the cutter on the single series of conveying-belts 60, lying loosely thereon. \Vhen it reaches the feed-gage, any deviation from a square position is therefore rectified by the slight friction of the belts thereunder pending the mo mentary dwell of the feed-gage after the sheet has reached it and before the grippers 80 have seized the sheet. The grippers of the imprcssion-cylinder 2O seize the sheet immediatel y before the release thereof by the grippers of the feed-cylinder25, and a positive register is always thereby insured. It will be observed that in a press of the present character, should the feed-table be applied directly to the impression-cylinder, it would, in order to supply the paper in the proper direction, necessarily be reversed in position and encumber the upper part of the cylinders, covering the exposed portion A of the cylinder 20, at which access is desired to be obtained for making ready.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-

1. The combination, in a cylinder prlntingpress, of an impression-cylinder, a paperfeeding cylinder adjacent thereto, conveyingbelts for the paper, and idlers bearing said belts located in circumferential grooves or intermissions in the surface of the feedingcylinder near the point of seizure of the paper thereon.

2. The combination, in a cylinder printing press, of an impression-cylinder, a paperfeeding' cylinder adjacent thereto, a paperfeed table above the feeding-cylinder, and an automatic paper-feeding mechanism beneath the feed-table, consisting of conveying-belts ranged tangentially to the feed-cylinder and distended upon idlers within the circle of such cylinder.

I JOHN BROOKS.

W itn esses:

CHAS. W. FORBES, II. F. PARKER.