US2744464A - Partitioned fountain rotary intaglio printing machines - Google Patents

Description

APARTITIONEID FOUNTAIN ROTARY INTAGLIO PRINTING MACHINES 3 Sheets-Sheet l Filed May 22, 1951 May 8, 1956 c. A. HARLEss 2,744,464

PARTITIONED FOUNTAIN ROTARY INTAGLIO PRINTING MACHINES Filed May 22, 1951 3 sheets-sheet 2 @N/ "vi May 8, 1956 c. A. i-IARLEss PARTITIONED FOUNTAIN ROTARY INTAGLIO PRINTING MACHINES Filed May 22, 1951 3 Sheets-Sheet 3 .PARTITIONED FOUNTAIN ROTARY INTAGLI-O PRINTING MACHINES Charles A. Harless, Riverside, Conn., assignor to R. Hoe is Cko., Inc., New York, N. Y., a corporation of New Application May z'z, 1951, serial N0.,227,637 4 claims. (el. 10i-157) chines.

- More particularly, the invention is concernedl with partitioned ink fountain structures for such machines, it being an object of the invention to provide anfimproved arrangement for supplying different 'inks' to differentlengthwise portions of an intaglio printing cylinder. A preferred embodiment of the invention will now iirst be described with reference to the accompanying drawing and the features forming the invention will then be pointed out in the appended claims..

In the drawing:

Figure 1 is a plan view of a fountain embodying the invention in a preferred form;

Figure 2 is a side elevation, partly in central vertical section, of the fountain of Figure y1;

Figure 3 is a section on the line 3--3 of Figure 2;

Figure 4 is a section similar to Figure 3, but showing certain parts in different positions;

Figure 5 is a detail elevation view of a sealing ring,l partly broken away;

Figure 6 is a section on the line 6-6 of. Figure 3;

This invention relates to rotary intaglio printing ma-k Externally the half-rings 21-22 have ilanges V26 tting around the fountain Ycenter partition members, and grooves l27 (Figure 9) for resilient strips 28 (Figure 6), which seal the half-rings 21-22 to the partition.

The fountain center partition includes a lower part 30` which may be cast integral with the fountain body and has a semicircular seat 31 (Figure 2) for the (lower half) ring 22, the seat 31 being received between the flanges 26 of the half-ring 22 and being sealed to the half-ring by the resilient strips 28. Above the center vline'of the cylinder, the partition 30 is formed toreceive an upper partition member 32 (Figure 4) which cooperates similarly with the upper half-ring 21 and is detachably fastened to the part 30 by means of strips 33 screwed to -member 32 and overlapping the part 30,

i thus completing the center partition as shown in Figures 3l and 4. Half-ring 22 is secured to the partition member 30 lby means of pins 34 (Figure 4) rin holes 35 (Figure 7).v Lubrication is provided for by'means of fittings 36 in the member 32 (Figures 1 and 4) and channels 47 passing through the ring 30 (Figures 7 and 8).

Thetupper partition member 32 is formed with arcuv ate flanges 40 overlapping the cylinder 1 at each side Figure 7 is a fragmentary View looking in the direcv tion of the arrows 7 7 of Figure 5;

Figure 8 is a section on line 8-8 of Figure 7; and

Figure 9 is a section on line 9 9 of Figure 5.

The printing cylinder 1 i'srsupported in bearings 2 carried by the usual press frames 3 which also support the fountain 4 in inking relation to the cylinder. The doctor mechanism is generally 'of the type shown in Harless application Serial No..65,1155, iled December 14, A

1948 for Rotary Intaglio Doctor Mechanism, now U. S. Patent No. 2,644,394. Arms 5 are pivotally mounted on the axially reciprocating slide 6 by means of shaft 7, and support a bar 8 which carries the doctors. Two doctors are provided, one for each end of the cylinder. The doctor structure is shown in Figures 1, 3k and 4, only the left hand doctor being shown in place in Figure 1, and the right hand doctor of that figure, which is identi'- cal, being removed to show the fountain structure more clearly. Each doctor comprises a blade 9y held by the upper and lower clamp elements 1) and 11 of the doctor blade holder. The holder is fixed in the bar 8 by means of an angle on the element 11 which fits in a groove in the bar as shown in Figures 3 and 4 and is held therein by clips 12 detachably secured to the bar 8.

The cylinder 1 has a central section or neck 19r rings 21 and 22. These are formed with internal circumferential grooves 23 which receive resilient strips 24 for sealing to the neck 19 of the cylinder. ber of pins 25 (Figure 9) are provided for holding the strips 24 in place.l

A numof the neck 19 (Figures 1, 2 and 4) and spaced from the cylinder surface by only a small clearance so as to catch any ink thrown olf the end of the cylinder, and keep it in the fountain. A pair of covers 41 (Figures 2, 3 and 4) are pivoted to the fountain wall and have end anges 43 (Figure 4) conforming to the arc of the flanges 40 and overlying the same. Plates 44 carried by the covers 41 extend down close to the cylinder surface when the covers are in closed position and are notched as at 45 to fit the anges 40. The opposite end of each cover is similarly related to an arcuate end cap 46 (Figure 2) overlapping the end of the cylinder 1.v It will be understood that the caps 46 and cooperating structure provide an eective closure at the cylinder ends. This structure in itself, however, forms no part of the present invention and, being well known, will not be described herein. Plates 47 (Figure 4) mounted on the partition member 30 extend over the upper partition member 32 and bolts 48 when tightened, hold it in place.

At the doctor side of the fountain, a pivoted cover 50 (Figures 3 and 4) is provided. This cover is equipped with a sealingblade 51 for each end of the fountain, andy the blades ,extend to a central barrier 52. The cover 5t) also carries a shield 53 fitting ina notch 54 in the ange'40 and with its barrier 52 fits the upper partition 32 and the ilange, so as to carry the division of the two ends of the fountain up above the member 32 and prevent ink leakage from one end of the fountain to the other. The blades 51 seal to the doctor blades 9, thus closing in the fountain on the doctor side completely except for the small gaps necessary for the doctor blade reciprocation. The similar closures on the doctor side at the ends of the cylinder 1 may be conventional and will not be described herein.

Ink may be supplied to the two ends of the fountain and circulated between them and the ink reservoirs in any appropriate way, utilizing the usual openings 55 (Figure 2) for this purpose.

What is claimed is:

1. In a rotary intaglio printing machine, and in cornbination, a printing cylinder having a section of reduced diameter and a printing surface to each side thereof, a fountain comprising ends walls, side walls and a bottom, bearings at the ends of the fountain supporting the cylinder therein, partition means in addition to the said bottom and side walls in sealed relation to the reduced diameter section of the cylinder in sealed relation also to the said bottom and side walls, and divid- Patented May 8, 1956l wall has a shield fitting the partition means and cover ing the ends of the doctors.

3. ln a rotary intaglio printing machine, and in combination, a printing cylinder having a section of reduced diameter and a printing surface to each side there of, a fountain comprising end Walls,` side walls and a bottom and partition means in addition to the said bottom and side walls in sealed relation to the reduced diameter section of the cylinder in sealed relation also to the said bottom and side Walls, for dividing the fountain into two separated compartments for inking the respective printing surfaces, the partition means comprising a sealing ring split in the horizontal axial plane of the cylinder and surrounding the reduced diameter section of the cylinder and a similarly split partition holding and in sealing engagement with the sealing ring.

4. In a rotary intaglio printing machine, and in cornbination, a printing cylinder having a section of reduced diameter and a printing surface to each side thereof, a fountain and partition means in sealed relation to the reduced diameter section of the cylinder for dividing the fountain into two separated compartments for inking the respective printing surfaces, the partition means comprising a sealing ring split in the horizontal axial plane of the cylinder and surrounding the reduced diameter section of the cylinder and a similarly split partition holding the sealing ring, packing means for sealing the ring to the reduced diameter section of the cylinder and for sealing the ring to the partition, a fitting for introducing lubricant between the ring and the partition and channels through the ring for supplying lubricant to its inner surface.

References Cited in the tile of this patent UNITED STATES PATENTS 581,201 Haddon` et al. Apr. 20, 1897 1,633,691 Brueshaber June 28, 1927 1,784,037 Wolf Dec, 9, 1930 1,890,922 Waller Dec. 13, 1932 2,328,990 Meyer Sept. 7, 1943 2,495,017 Meyer Jan. 17, 1950 2.550.454 Crafts et al. ADr. 24. 1951 2,579,181 Faeber Dec. 18, 1951

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