US449128A - miohaud - Google Patents

Description

(No Model.) 3 Sheets-Sheet '1. J. MIOHAUD. CHROMATIC PRINTING MAGHINE.

Patented Mar. 31, 1891.

INVENTOR Arrow imam? PETERS 50., Fume-mum, WASNINGTDN n c (No Model.) a SheetsSheet 2.

I i J. MIOHAUD. 1 OHROMATIG PRINTING MACHINE.

No. 449,128. Patented Mar. 31, 1891.

Fig. 2.

W ine ses- 57;"??? 1 Inwniar: I v I at B Attorney (No Model.) 3 ShetsSl1eet a.

J. MIOHAUD.

CHROMATIC PRINTING MAGHINE. No. 449,128. PatentedMar. 31, 1891.

UNITED STATES ATENT price.

JULES MICHAUD, OF PARIS, FRANCE.

CHROMATIC-PRINTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 449,128, dated March 31, 1891.

Application filed February 10, l 890.

. chine being principally intended for producing impressions in two or more colors on each side of the sheet. a

The machine consists, essentially, of a bed which has a to-and-fro movement imparted thereto either by means of arack and pinion .(as in machines known as perfecting-machines) or by a crank and connecting-rod, as

in most machines for printing on one side only, or in any other suitable manner. On the bed the requisite number of forms are suitably arranged, and above it rotate two cylinders with grippers, one of such cylinders coming in contact with one part or series of forms on the bed and serving for the impressions on one side of the sheet to be printed, and the other cylinder coming in contact with the other series of forms and serving for the impressions on the other side of the sheet.

Figure 1 of the accompanying drawings is a vertical section of a machine forproducing t'wo impressions on each side of the sheet. Fig. 2 is a side elevation of the arrangement for raising the cylinders 2 and 5, and Figs. 3 and 4: are respectively an end View and side elevation of the arrangement for raising the inking-rollers when they are not required to ink the form passing beneath them.

The sheet is fed from table 1 to the grippers of cylinder 2, which carry it forward, so that it comes in contact with form 3 and receives an impression. At the second rotation of the cylinder 2 (the grippers of which have not then released the sheet) such sheet receives a second impression from the form 4 and is then transmitted to the cylinder 5, which by means of its grippers carries same forward and effects the impressions 011 the opposite side, first by form 6 and then by form 7. The sheet is then seized by the grip- Serial No. 339,864- (No model.)

pers of cylinder 8 and carried forward to the fliers 9, which deliver it to the table 10, in the case where the machine is fitted with a mechanical delivery. The delivery may be effected by a cylinder with grippers or by.

tapes.

Two ink-ducts are placed one to the right and the other to the left of the impressioncylinders and serve to ink the forms by the intermediary of a series of rollers upon which the distribution is effected until the ink reaches the contact-rollers 11 and 12 on one hand and 13 and 14 on the other hand, which bear directly upon the forms. The rollers 11 and 12 serve to ink the forms at and 6, and the rollers 13 and 14 serve to ink the forms 3 and 7. It will be understood that I may apply to this machine on one or on both sides either flat or cylindrical ink distribution, as described and shown in the drawings. The contact-roller 11 is raised so as not to ink the part of form 7 which passes underit, and the contact-roller 14 is similarly raised to avoid contact with form 4.

Figures 3 and 4 show the arrangement for raising roller 11. At each end of the roller there is a wheel 42. On the bed of the machine and outside the form at a lifting-piece 4:3 is arranged, which acts on the wheel 42 and causes the roller to be raised during the whole time that itis over the form 4:, which it is not to ink.

I may provide the machine with as many inking apparatus as there are formsthat is to say, as shown in the drawings, a distributing arrangement will supply ink to the contact-rollers 16 and 17 and another to the roll ers 18 and 19. In this arrangement the rollers 1.6 and 17 will ink the form 6, the rollers 11 and 12 the form 4;, the rollers 13 and lathe form 7, and the rollers 18 and 19 the form 3. The rollers serving to ink one of the forms will be raised during the passage of the other forms beneath them.

If it is desired to print in one and the same coloron each side of the sheet, a single inkin g apparatus will suffice to ink the forms for printing both sides of the sheet. For this purpose the two rollers 11 and 12 would ink the forms 4 and 6, of which at prints on cylinder 2 and 6 on cylinder 5, and the rollers 11 and 12 would therefore sulfice to ink the two forms, producing perfecting printingtnat 15 to say, printing on both sides of the sheet.

In this case the forms 4 and 6 only would be on the bed, the forms 3 and7 being removed. The sheettaken by cylinder 2 would first make one rotation with this cylinder without receiving an impression, then a second rotation, during which it would be printed on one side by the form 4. Then being transmitted to cylinder 5, it would first make one rotation, during which it would be printed on the other side of the form 6, and a second rotation without receiving any new impression. Further, the machine may be employed, when desired, in order to produce a single impression only on each side of the sheet, or one of the forms of each set of forms may be replaced by any suitable numbering arrangement.

It will be understood that I may apply to this machine either offsetshee'ts or cleaningrollers for removing the offset from the second cylinder, as in ordinary perlTecting-machines. The table would in the former case serve for feeding the offset-sheets to the cylinder 21, whence cords or tapes would conduct them between the printirig-cylinders. In the case where I employ cleaning-rollers 23 and 24 the latter will remain raised during the passage of the printed sheet and be lowered onto the cylinder 5 when empty.

The machine shown in the drawings will act under conditions analogous to those of an ordinary perfecting-machine. The cylinders 2 and 5 have parts of reduced diameter, so as to avoid battering the forms upon which they are not required to print, or instead of being thus constructed the cylinders may be raised, and they would also have such lifting movement imparted to them so as to hold them away from the bed when moving in a diree tion opposed to the travel of the latter.

For the purpose of raising the cylinders 2 and 5 they are, as shown in Fig. 2, carried by parts 25 and 26,capable of rising and falling within the frame of the machine. These parts 25 and 26 carry two bearings 27 and 28, the height of which is adjustable by screws. In the bcarin gs 27 and 28 are mounted two pieces 29 and 30, which traverse the machine, and themselves receive two arms 31 32. The arms 31 3 at their upper ends abut against fixed points 33 and 34: of the side frame of the machine. Upon a shaft 35, which makes one revolution for each complete travel of the bed of the machine, a cam 36 is fixed and acts upon the cross-piece 37,connected to the pieces 29 and 30. Springs 88 and 39, through the intermediary of the cross-pieces 40 and ll, always tend to raise the parts 25 and 26. The cam 36 causes the pieces 29 and 30 to be a1- ternately inclined and straightened, whereby the rising and falling of the parts 25 and 26 and of the cylinders 2 and 5, which they carry, are effected at the required times.

The movement of opening and closing the grippers is effected under the action of cams mounted upon a movable piece called a camcarrier and operating like the cam-carrier of ordinary perfecting-machines.

The arrangement shown for actuating the ink-distribution apparatus is only shown as a suitable arrangement for such purpose.

The machine shown in the d'awings and hereinbefore described is only shown as an example, and it will be understood that I may employ any other suitable arrangements than those described or shown for actuating the bed, and also the cylinders and for either fiat or cylindrical inking and for the delivery.

The machine may, when desired, be used as an ordinary perfecting-machine-that is to say, with two forms only, one for printing each side of the sheet, and according to the positions of such forms on the bed they may both be inked by the same contact-rollers or each by different rollers.

The machine may further be employed for printing on one side only of the sheet, either in one or in several colors.

In this invention each of the two impression- cylinders 2 and 5, which are of large diameter, has a portion. of its circumference cut away or the radius of one side made shorter than the radius of the opposite side, thus allowing the forms which are not to be printed by each cylinder to pass underit without producing an impression, so that the sheet taken by the grippers of cylinder 2 is printed for the first time by the first form, marked 3 on the drawings, and that while the cylinder continues its movement the second form 7 in its movement comes under the reduced part of cylinder 2, and consequently produces no impression. On the second rotation of cylinder 2 the sheet receives the second impression upon the third form, marked at on the drawings, and while the cylinder continues its movement the fourth form 6 comes under the reduced part of cylinder 2, and consequently produces no impression. The sheet, having thus received two impressions on the same side, passes to and is reversed upon cylinder 5 and receives two impressions on the second side when it passes over forms 6 and 7, the forms d and 3, which both come under the reduced part of cylinder 5, producing no impression thereon. As in all perfecting-machines, when the cylinder 2 carries the sheet the cylinder5 is raised by anysuitable means so as not to touch the forms, while, on the contrary, when the cylinder 5 carries the sheet the cylinder 2 is raised so as not to touch the forms. The two impressions on the same side are produced by alternate forms-that is to say, by the first and third forms-which enables the machine to be made with a shorter travel.

In this machine only two ink-ducts and two ICC.

ink-distributing systems are requisite to 019- of the other set produce the impressions on tain two col0rssay red and blueon each the opposite side of the sheet when same has side of the sheet. been transferred to the other cylinder, the al- 15 What I claim as my invention, and desire ternate forms being caused to pass under the 5 to secure by Letters Patent, iscylinder with which they are not required to The combination of two impression-cylinact without coming in contact therewith, all ders provided with grippers, a bed carrying substantially as set forth.

two series of forms, the forms of each series alternating with those of the other series, JULES MICIIAUD' I0 those of one set serving to produce impres- Witnesses:

sions on one side of a sheet of paper while B. J. PRESTON,

such sheetis on one cylinder, while theforms DAVID T. S. FULLER.

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