US1481783A - Printing press - Google Patents

Description

Jan. 22 1924.

c. MEISEL PRINTING PRESS Filed Sept. 16 1921 2 Sheets-Sheet 1 1 W318 niow' iese/ifleisei,

Jan. 22 1924,

C. A. MEISEL PRINTING PRESS Filed Sept. 16. 1921 2 Sheets-Sheet 2 Patented Jan. 22, E24.

- onannns .aus'rm MEISEL, or nosron'. mn'ss aonusnr'rs, assrenon, r0 mnrsnr. PRESS MANUFACTURING COMPANY, or nos'ron, MASSACHUSETTS, a oonroaa'rron or MASSACHUSEETS.

rarrrrrrre PRESS.

Application filed September 16, 1921.v Serial No. 501,638.

T 0 all whom it may concern.

Be it known that I, CHARLES A. Mn rsnn, a citizen of the United States, and a resident of Boston, in the county of Suffolk and State of Massachusetts, have invented an Improvement in Printing Presses, of which the following description. in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates to printing presses and in its more specific aspects to multicolor presses for operating on sheets and to an improved arrangement of the same fac1l itating the delivery of the printed sheets from the press.

My invention will best be understood by reference to the following description of the specific embodiment thereof shown by way of example in the accompanying drawings, wherein:

Fig. 1 is a diagrammatic side elevation of a multi-couple press illustrating my invention Fig. 2 is a radial section through one of the printing couples and showing the gripper bar passing therethrough; and

Fig. 3 is a circumferential section illustrating the delivery means.

My invention is here shown as applied to a multi-color, multi-couple press of the ring gear type. For a detailed explanation of the construction of a press of this type reference may be made to my Patent No. 1,399,-

360, dated December 6, 1921.

Referring to Fig. 1, such press may embody a plurality of printing couples, two being here shown, which are ranged around a cylindrical path so that the lines of contact between the interior impression cylinders 5 and the exterior plate cylinders 7 correspond to elements of the cylinder, using that -word in its geometrical sense. The sheets .are carried around through a cylin- 'dric'al path by means of a sheet carrier (see Fig; 2) comprising a pair of rings 9 con- 'veniently taking the form of ring gears connected by gripper bars 11, there being two gripper barsin the present instance located substantially diametrically. Preferably supports 13' in the form of cylindrical segments as shown'in Fig. 3 -are provided for supporting the sheet in its cylindrical path as it passes to, between and from the printing couples. Any suitable means may be the segmental supporting surfaces.

The gripper bar 11 as shown by Fig. 3 is adapted to hold the sheet in the cylindrical surface and is provided with gripper fingers 15 swinging inwardly toward the center of the cylinder and closing outwardly on the sheet, thus providing for holding it exactly in the cylindrical path and providing a substantial thickness of metal against which the fingers close since the main body of the gripper bar is located outwardly of such path and its thickness does not tend to space the paper away therefrom.

Referring to Fig. 2, a large driving gear 17 may mesh with gears 19 on the plate cylinders and gears 21' on the plate cylinders meshing with gears 23 on the impression cylinders drive the latter. Other gears 25 on the plate cylinders mesh with ring gears 9 and drive the sheet carrier.

Referring to Fig. l, the two printing'couples there shown are arranged on one side of the cylindrical sheet path. The paper is fed in atone side of the cylinder, conveniently at the lower part thereof, and it may be taken by grippers on a receiving cylinder 27 exteriorly tangent to the cylindrical sheet path and rotating in the opposite sense as indicated and transferred to a transfer cylinder 29 interiorly tangent to the sheet path at the same point. The transfer cylinder 29 makes two revolutions for each one of the receiving cylinder 27. On the first revolution it takes the sheet from the cylinder 27 and on the second delivers it to one of the grippers 11 of the main sheet carrier device. The cylinders 27 and 29 and the rings 9 all move at the same surface speed and the transfer of the sheet from one to another is readily effected by means of proper gripper operating cams unnecessary to describe.

Referring to Figs. 2 and 3, after the sheet is carried around the cylinder it may be delivered therefrom at the uppermost portion thereof. For this purpose there is provided a transfer cylinder 31 having outwardly opening gripper fingers 33 rotating interiorly tangent to the cylindrical sheet path at the uppermost point P thereof and cooperating with the transfer cylinder is a delivery device in the form of a conveyor chain 35. carrying the outwardly opening grippers 37. The sprocket'39 over which the c ain is trained is disposed at some distance from the gears 9 and the straight runof the chain extends tangent to the cylindrical sheet path eiteriorly at the highest point P. That is, in the travel of the chain the fingers 37 are carried in a substantially straight line adjacent the cylindrical sheet path so that the gripping faces of these fingers pass through the uppermost point of that path as do also After the cylinder has made one revolution the fingers 37 reach the point P at the same time. as the fingers 33, the fingers 33 open and the fingers 37 close. The printed sheet is carried away by the chain 35 toward the right in Fig. 1 and without change of direction may be dropped on a receiving table 41. The sheet is held by its leading edge by the fingers 37 with the printed face up but by virtue of this arangement it hangs down freely from the gripper fingers, receiving a loose, underriding support i if .necessary from tapes 43, but the printed face is not pressed against anyother surface but hangs down free of the chain 35. Thus there is no danger of blurring the ink and an ample time for drying may-be provided for in the travel of the chain 35.

Having described in detail the particular embodiment of my invention shown by way of example in the accompanying drawm s, what I claim as new and deslre to secure y having gripper twee Letters Patent I shall express in claims-:- a i v In a ress of the type having an orbitally mova "le sheet carrler, means for; delivering-the sheet from the carrier comprising a transfer cylinder interiorly tan'gent to the sheet path and. a deliverychain having a run exteriorly tangent to the path at that point.

2. In a press ofthe type having a ring-- gear sheet carrier, means for deliveringthe sheet from the carrier comprising a transfer cylinder substantially tangent to the sheet path interiorly at the uppermost point thereof and a delivery chain having a run exteriorly tangent at that point.

3. A press comprisinga plurality of printing couples, the contact lines of whichcorrespond to .elements of the surface of an imaginary cylinder, a carrier for moving sheets through said couples anddelivery means for carrying away the sheets at the uppermost point of said cylinder. 1

45 111 a press of the type havingan orbit all movable sheet carrier, one or more plate cy inders exterior to the orbit, cooperating impression cylinders .interior. thereto, a transfer cylinder interiorly, tangent to the sheet ath anddelivery means receiving the sheet rom said transfer cylinder and carrying the same depending with the printed side to the rear. v p

5.,A press having an orbitally moving sheet carrier having mwardlyopenin'ggripper fingers, an interiorly isposed carrier fingers opening outwardly at an upper point in the orbit and a delivery. device having gripper fingers moving substantially in a straight line exteriorly of the orbit and opening inwardly toward the same at said point. a

In testimony whereof, I have signed my name to this specification.

CHARLES AUS IN M I'sE in the follow--

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