US368338A - Chromatic-printing machine - Google Patents

Description

3 Sheets-Sheet 1.

(No Model.)

B. HUBER.

CHROMATIC PRINTING MACHINE.

No. 368,338. Patented Aug. 16, 1887.

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B. HUBER. I CHROMATIC PRINTING MACHINE.

ented Aug. I6, 1887.

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Patented Aug. 16, 1887.

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UNITED STATES PATENT ()EEIcE.

BEBTHOLD HUBER, OF TAUNTON, MASSACHUSETTS.

CHROMATIC-PRINTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 368,338, dated August 16, 1887.

Application filed February 18, 1885. Serial No. 156,267. (No model.)

To all whom, it may concern:

Be it known that I, BERTHOLD HUBER, a citizen of the United States, residing at Taunton, in the county of Bristol and State of Massachusetts, have invented a new and useful Improvement in Chromatic Printing Machines, which improvement is fully set forth in the following specification, reference being had to the accompanying drawings.

My invention relates to a printing-press having two impression-cylinders so arranged as to take impressions from two forms of type which are fastened to the same bed. The bed may be either flator curved, and have a reciprocating or rotating motion in order to bring the forms in contact with the impressioncylinders at the proper time, the impression-cylinders in either case having a continuous rotating motion.

My invention consists in the combination, with a bed having two forms and means to re ciprocate it, of two impressioncylinders driven continuously in one direction and provided with grippers, and a single transfer-cylinder provided with grippers and arranged between said impression-cylinders to make an impression upon the sheet at and by the first-impression cylinder and form, and then transfer the sheet, same side up, to the second-impression cylinder to receive the second impression from the other form.

The invention also consists in a printingpress of substantially the construction above set forth provided with sheet-bands, an apron, and an air-blast, constructed and arranged to operate substantially as hereinafter particu larly set forth and claimed.

The increase of speed or capacity is the advantage that I claim for this style of construction over the multi color press invented and patented by me September 25,1883,No.- 285,750.

Figure l is a side elevation of a printingpress embodying my invention. Fig. 2 is a vertical longitudinal section of the same. Fig. 3 is a transverse section of the same on a center line between the two impression-cylinders. Fig. 4 is an end elevation of the cylinders, showing gripper mechanism. Fig. 5 is a longitudinal section in outline of a printing-press embodying my invention having the second-impression cylinder one-half the size of the first-impression cylinder.

In Figs. 1, 2, and 3 I have shown myinvention as applied to a printing'press having two singlerevolution impression-cylinders, G and C, and having the intermediate or transfer cylindenC, and the deliverycylinder 0 onequarter the size of the impressioncylinders. The sides, together with the crossstays and braces, all marked A, form a suitable frame having bearings and slides for the four cylinders, bed, and other moving parts of the machine.

Power is transmitted to the driving-shaft D, Figs. 1 and 3, by means of a belt and pulley. (Not shown.) The driving'gear 9, fast on the shaft D, meshes into the gear 9, fast on the reversingshaft D, and by means of said reversing-shaft D, with its reversinggearg", engaging the bed-rack 9 transmits a reciprocating motion to thebed B. The driving-gear g on driving-shaft D also meshes into the gear g* on the impression-cylinder O, and by means of the train of gears 9 g, 9 and located on the opposite ends of their respective cylinders 0, 0 C, and O, transmits a continuous rotating motion to said cylinders from the shaft D.

F is the feed-board.

F is the fly, and is operated by the cam F motion being transferred from the cam F to the fly F by the levcrf, eonnecting-rodf, and gearsegments f f, as shown in Fig. 1, the parts being common and well known and operating in the usual manner.

F is the fly-board.

B and B are the forms, secured to the same bed, B, and so arranged that B comes in contact with the impression-surface on the cylinder 0 and B with a similar impressionsurface on cylinder 0 at every turn of the machine.

R and R" are the form-rollers.

The impression-cylinders O and C are fitted with common grippers, S, (see Fig. 2,) which are operated by the ordinary tumbler or gripper cams, T and T (Shown in Fig. 4.)

The transfer-cylinder 0 intermediate of the impression -cylinders, and the delivery-cylinders C, are also fitted with grippers S,which are operated by a roll on the levers T and T, Fig. 4, coming in contact with the cams T and T. (Shown in Figs. 1 and 8.)

P is an air-blast pipe, (see Fig. 2,) and it is designed to blow a current of air between the cylinder G and the wooden apron P, the ob ject being to hold the sheet against the cylinder (3 without using sheet-bands like those shown at P which, if used, would smut the fresh ink received by the sheet from the form B.

Operation: A sheet is fed from the feed board F in the usual manner onto the first-impression cylinder at every turn of the cylinder, and, passing around, it receives an impression from the form B, after which it is seized by the gripper S on the transfer-cylinder 0, which, rotating, immediately delivers it, printed side up or outward, onto the'secondimpression cylinder 0 where it receives its second impression from the form B after which, by means of. the delivery-cylinder 0* and the common delivery-tapes,F, it is placed in front of the fly F, which piles it, printed sideup,on the fly-board F'. In the meantime another sheet will have been fed onto the firstimpression cylinderG'; so it is plain thatwhen the press is in full operation there will be a sheet on each impression-cylinder, ready to be printed at every turn of the machine and with every forward stroke of the bed B.

In Fig. 5 I have shown in outline my invenprinting-presses two impression-cylinders and an intermediate transfer-cylinder operating in conjunction, with a reciprocating bed having two forms, one for each impression-cylinder, wherein the said cylinders are provided with tapes to carry the sheet to be printed in two colors .on one side from the firstimpression cylinder, over the transfer-cylinder to and aboutthe second-impression cylinder, and thence to the fly, to be delivered on the flyboard, and, further, wherein the reciprocating bed is moved forward to bring one form against its cylinder to secure one printing and then is moved backward to obtain the.

second impression at the second-impression cylinder.

I do not claim such construction as apart of my invention; nor do I include as a part of said invention the use of tapes to operate in connection with the transfer-cylinder to trans fer a sheet from one impression-cylinder to the other.

It will be noticed in my invention, wherein I provide the transfer-cylinder with grippers, the sheet, upon receiving a type-impression on the first-impression cylinder, is carried to the transfer-cylinder, and simultaneous with its release by the grippers on said impressioncylinderthe said sheet is grasped by the grippers on the transfer-cylinder. As soon asthis' is accomplished the sheet is carried around and upon the transfer-cylinder to the secondimpression cylinder, where it in turn is grasped by the grippers on said cylinder, and is then transferred to said cylinder printed side uppermost or outward. The sheet is then ready to receive the second ink-impression from the second type-form on the bed. Thus transferred from one impression-cylinder to the other, it will be seen that the fresh ink printed on the sheet at the first-impression cylinder is not touched or besmeared upon reaching the second-impression cylinder by reason of any tapes ,or sheet-bands. Were such tapes used in this class of machines, the freshly-inked sheet coming from the first-impression cylinder would, upon reaching or in being transferred to the second-impression cylinder, be smeared or soiled by said tapes.

In some cases where tapes have been employed to bind the sheet at points along its face and between its ends it has been necessary to allow unprinted spaces or blanks on the sheet of paper for the accommodation of the tapes, as these prevent smearing or soiling of the sheet in its passage from one impression-cylinder to the other. Such method, it is evident, while adding to theexpense of printing by reason of waste, also prevents the printing of sheets so that the printed matter or design may cover the entire face of the sheet.

Tapes cannot be used to bind the sheet at its edges only, for the reason that from experience it is found the weight of the fresh ink on the sheet received at the first-impression cylinder, together with the great tendency which the sheet has to adhere to the typeform, because of the sticky or adhesive nature of the color employed, tends to draw the sheet at its middle portion from the second-impression cylinder, and thereby pull the edges of said sheet from beneath the tapes.

I claim 1. .In a printingpress, a bed having two forms, means, substantially as described, to reciprocate said bed, two impression-cylinders driven continuously in one direction and provided with grippers, and a single transfercylinder provided with grippers and arranged between said impression-cylinders, combined and arranged substantially as set forth, to make an impression upon the sheet at and by the first-impression cylinder and form, and then transfer the sheet, same side up, to the second-impression cylinder to receive the second impression from the other form.

2. The combination, with. the impressioncylinder 0, provided with grippers, and transfer-cylinder 0 having grippers, the sheetbands P and the reciprocating bed provided with two forms, of the cylinder 0 and the apron P and air-blast pipe 1?, as and for the purpose set forth.

BERTHOLD HUBER.

WVitnesses:

W. K. HOIDGMAN, S. O. BURT.

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