US395710A - Sheet-delivery apparatus for printing-machines - Google Patents

Description

(No Model.) 3 Sheets-Sheet 1. R. MIEHLE.

SHEET DELIVERY APPARATUS FOR PRINTING MACHINES.

No. 395,710. Patented Jan. 8, 1889.;

Jmrerwov:

n. PETERS. Plwlu-Ulhogmpner, Wnh'mgian. ac

(No Model.) 3 Sheets'-.-Sheet 2.

R. MIEHLE.

a SHEET DELIVERY APPARATUS FOR PRINTING MACHINES. No. 395,710. Patentd Jan. 8, 1889 a/w am/way.-

N4 PETERS. FhnicrL'rlhogmpber;Washington, D. C.

(No Model.) 3 Sheets-Sheet 3.

R. MIEHLE.

SHEET DELIVERY APPARATUS FOR PRINTING MACHINES.

Patented Jan. 8, 1889 N. PEfERs. MLilhugaphar. Washington. a, c.

FFIQEQ ROBERT MIEIILE, OF CHICAGO, ILLINOIS.

SHEET=DELIVERV APPARATUS FOR PRINTING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 395,710, dated January 8, 1889. Application filed March 8, 1887. Renewed August 22, 1888. Serial No. 283,514. (No model.)

T (6 1071-0172, it may concern Be it known that I, ROBERT I\IIEHLE,1(-)Si(ling at the city of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Sheet-Delivery Apparatus for Printing-Machines, of which the following is a specification.

The here'ureontained improved arrangements and combinations of parts comprise a sheet-delivery for cylinder printing-presses, in which the sheet can be delivered from the top or front of the cylinder to the forward end of the press with the clean or dry side to the fly-fingers.

In the accompanying drawings, Figure l is a side elevation of a two-revelution-cyliiuler printing-press with the improved delivery mechanism connected thereto. Fig. 2 is an enlarged sectional side view, with the gearing removed, showing the impression -cylinder and delivery mechanism in detail. Fig. 3 is a top plan view of Fig. 2. Figs. 4: and 5 are views showing the deliveryreels. Figs. (5 and 7 show the operatingcams for the delivery and cylinder grippers. Fig. 8 shows one of the brackets in which the gri iipers are held. Figs. 9 and 10 show the recessed parts of the delivery-shaft for allowing the reels being placed thereon or removed therefrom when necessary.

In the drawings, letter A designates the main frame of the press; 1: the cylinder, pro vided with the usual grippers, B, and operating-tumbler B which provided with a wiper, B The pins for operating the said tumbler to open and close the grippers for taking the sheet from the feed-board B" it is thought unnecessary to show or describe. The feed-board B and feed-guides are shown in their relative position with the delivery mechanism.

C designates the cylinder main gear, which communicates motion to the delivery-goar C. This in turn meshes with the smaller gear, 0, secured upon the end of tape-roller c, upon which are placed tapes 0 which in their circuit pass around tape-pulleys 0 upon rod 0, mounted in the upper portion of the main. frame at the front end of the press.

Upon the cylinder journal-boxes are secured the supporting-brackets D, in which is mounted delivery-shaft D containing delivery-reels D and brackets (l, in whicl'l rod (1 is held, said rod carrying delivery-grippers (1 which bear with their points upon the curved end or stops d of the brackets (Z. On the outer end of rod (1 is a crank, d", which has a pin, 6, projecting from either side, the outer side being provided with a wiper, e, the inner side having connected thereto a rod, containing a spring, (1, which bears against stop (I) and nut (i the tendency of the spring being to keep the points of grippers d bearing against stops (Z when the same are not operated by the inclined cam-plates and .E. Each of these cam-plates are secured to the frame and are held in their proper positions by pins 2 and L, which slide loosely in said frame. At the outer end of these pins are fastened plates i and which are operated upon by the forked lever I and I by the following means:

Projecting into the groove of cam N upon the shaft M at the outer side of the main frame is a stud, 91, secured upon the lower end of the lever I, which is pivoted upon the main frame, and which, as the shaft revolves, swings the said lever through the action of the cam-groove to and from the main frame, whereby the upper end, which is forked, moves the plate 2'? and with it cam-plate E, so that the same is brought at intervals into and out of the path of wiper 6 upon crank cl.

The cam plate E receives its movement through lever I, which has both ends forked to engage plates 1' 'z". Itis obvious that when movement is imparted to plate i in one direction the plate i is moved in the other direc tion, as lever I is pivoted at or about its center.

The receiving-table F is mounted upon the front end of the pressfranu-i, upon which the printed sheets are deposited by the vibrating fly-fingers f, which are secured to the rod F. This rod is provided with a segmental. gear, u, at its outer end, which is operated by the rock-lever U, which in turn receives motion through camU upon shaft M, and through spring it upon the connecting-rod 11. which tends to keep the frictioirroller 5 bearing against the surface of cam U.

The operatin g time of shaft M is one revo lution for one impression upon the form by the cylinder for which the same makes two revolutions, the delivery-grippers being timed four revolutions for one impression upon the form by the cylinder.

The operation of the device is as follows: Beginning at the time the sheet arrives at the top with the cylinder after the impression has been taken, and the cylinder-grippers approach the delivery grippers, which revolve at the same speed as the cylinder, the wiper B engages with the incline 1 upon the cam plate E, which tends to open the cylindergrippers to release the sheet. At the time the sheet is about to be released by the cyl inder-grippers the wiper 6 passes the incline y, which allows the spring (7. to turn crank d, which closes the delivery-grippers upon. the sheet against the stops (1.. The sheet then passes upward with the delivery-grippers, meanwhile being supported by the delivery-reels. In order to not drop the leading edge of the sheet as wiper 6 passes the camplate E to complete one revolution with the sheet, the same is moved outward from the path of the wipers by the action of the grooved cam N and rock-lever I. which also moves cam-plate E into the path of the wiper 0 through the forked lever I, so that when the delivery-grippers arrive at a point to have just passed the tape-roller c with the leading edge of the sheet the wiper e engages the incline 1 of cam-plate E. The sheet now continues 011 its outward travel upon the tapes 0 until the same arrives at a point at which the fly-fingers are timed to lift it bodily upward. and turn it over upon the fly-table, which occurs as the incline m of cam U passes the friction-roller s, which is forced against the cam-surface by the compression spring a. From the time the cylimler-grippers release the sheet the same are kept in an open position While the wiper I3 rolls against the inner circular part, 1 of the cam-plate E, which holds them open just long enough to prevent them striking the tape-roller c, after which the wiper B" passes the incline y, which allows the grippers to close by the usual spring provided for this purpose.

In order to keep the sheet moving at the proper speed when the same is being dis-' charged to the tapes by the delivery-grippers, the reels maybe grooved and a strip of rubber or any other flexible material secured therein, as shown in Fig. 5, the diameter of which is a little larger than the plain reel, so that the same will ride upon the tape-roller e and force the sheet outward. This arrangement also facilitates heavy paper or card board being delivered directly from the cylinder to the tapes, when sufficient unprinted marginal space permits of the same, or the reels in such cases may be entirely dispensed-with. To aecomplish this, the rock-lever I is disengaged from operating upon the cam-plate E after the same is moved inward to operate the de livery-grippers. The same are then operated at every revolution by the cam-plate E, as the same then remains stationary.

Just inside of brackets D the shaft D is cut away at either side, as shown in Figs. 9 and 10, to allow of placing or removing the delivery-reels when more or less are required, the opening in the delivery-reels being just sufficient for allowing the same to be slipped ever the narrow portion of the shaft and also to allow the same being moved lengthwise without interfering with the brackets d.

In some cases a cylinder having a surface the whole length of the impression part of the cylinder, and just allowing an opening for the delivery-grippers to operate in, may be used instead of the independent reels.

By giving one revolution and over to the delivery grippers and reels I am enabled to deliver the sheets positively to the fly-frame or receiving devices without hinderance, as the sheets are firmly held by the delivery grippers until the same are entirely removed from the impression part of the cylinder, to which they adhere when charged with electricity, or when printing the second side be fore being thoroughly dry. It is also desirable to give one revolution and over to the de livery-reels when the device is applied to oscillating and stop cylinder presses, which do not carry the sheet around far enough to discln rge the same.

I do not claim in. this application the revolving sheet lifters or grippers being journaled in stationary bearings located at the front or top of the cylinder to seize the edge of the sheet and start it away from same, as this is embraced and claimed in my application, Serial No. 1l+t,070, tiled September 26, 1884.

I claim as my invention- 1. In a cylinder printing-press, the combination, with the impression-cylinder, of the revolving delivery-grippers and deliveryreels located at the front or top of the cylinder, the said delivery-grippers receiving one revolution and over before discharging the printed sheet to the delivery mechanism or receiving device, substantially as described.

2. In a cylinder printing-press, the combination, with the impression-cylinder, of delivery-grippers, delivery-reels, and the receiving-tapes located at the front or top of the cylinder, the delivery-grippers receiving one revolution and over before discharging the printed sheet to the'said tapes, substantially as described.

3. In a cylinder printing-press, the combination, with the impression-cylinder, of the delivery-grippers, reels, tapes, and fly-fingers located at the front or top of the cylinder, the

delivery-grippers receiving one revolution and grippers located at the front 01. top of the In testiinonywhereof Iaffixmysig'natnre in cylinder for seizing the leading edge of the presence of two Witnesses. printed sheet and discharging it upon the flyfingers with the non-printed 01' dry side to ROMLRl MIEHLE' 5 said fly-fingers, which deposit the same upon \Vitnesses:

the fiy-ta-ble with the lastprinted side down, GEO. XV. FRITZ,

substantially as described. PETER DIENHART.

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