US1772470A

US1772470A - Ink-removing device

Info

Publication number: US1772470A
Application number: US292364A
Authority: US
Inventors: William J Snyder
Original assignee: Individual
Current assignee: Individual
Priority date: 1928-07-13
Filing date: 1928-07-13
Publication date: 1930-08-12
Anticipated expiration: 1947-08-12

Description

Aug. 12, 1930. w. J. SNYDER INK REMOVING DEVICE s Sheets-Sheet 1 Filed 'July 15, 1928 JJ/Mr ATTORNE Y INVENTOR M Rm ww W. J. SNYDER INK REMOVING DEVICE 3 Sheets-Sheet 2 Filed July 15. 1928 ATTORNEY a x 3 l\ h 0 0 N I o ,1 1 Q: I I b Aug. 12, 1930, w. J. SNYDER 1,772,470

INK REMOVING DEVICE Filed July 15, 1928 3 Sheets-Sheet 3 W/ BY ATTORNEY y 10 press and operated Patented Aug. 12, 1930 emu- PATENT OFFICE WILLIAM J. SNYDER, OF FORT LEAVENwOB-TH, KANSAS INK-BQ'JMOVING DEVICE Application filed July 13,

My invention relates to ink-removing de vices and more particularly to devices of that character for removinglink and the like from distributin and form rollers of rotarv presses, suc as those commonly known as direct or ofiset lithographic presses, the principal object of the invention bein to provide for mechanical removal of the 1nk while the ink distributin mechanism is in the %y its own power.

It is a f rther object of the invention to provide structure whereby the ink. will be efliciently andquickly removed without unduly wearing or scarifying the ink distributing apparatus.

Another object of the invention is to provide an ink-removing device which may be readily attached to or removed from the press without the use of tools, to permit the use of a single device on various presses of similas sizes and like nature.

In accomplishing these and other objects of the invention 1 have provided improved details of structure, the preferred forms of which are illustrated in the accompanying drawings, wherein:

Fig. 1 is a perspective view of the preferred embodiment of my invention as applied to the ink distributing apparatus of an ofiset press.

Fig. 2 is a perspective view of the ink removing device detached from the bracket arms that support it on the press.

Fig. 3 is a cross section through the device.

Fig. 4 is a detail perspective view of one end of the ink removing device, particularly illustrating the ink removing element.

Fig. 5 is a detail perspective view of one of the trunnion pins for mounting the device on the supporting arms.

Fig. 6 is an enlarged detail sectional view through the wiper illustrating its relation with the surface of the distributing roller.

Fig. 7 is a plan view of the device in functional relation with the distributing roller.

Fig. 8 is an end view, the upper portion of the supporting arm being broken away.

Fig. 9 is a detail perspective view of the roller mechanism for carrying the wiper ele- 1828. Serial No. 292,384.

ment in oscillatory movement with the distributing roller.

Referring more in detail to the drawings:

.1 designates an offset rotary press having a ductor roller 2 for taking up ink from a fountain (not shown) and transferring the ink to a set of distributing rollers 3 which in turn pass the ink onto a storage drum 4 for delivery to vibratory or oscillatory distribut' ing rollers 5 that deliver the ink uniformly over form rollers 6 and from the form rollers to the printingform which may be a relief, non-relief, or lithographic plate 7. At any instant at least one of each set of rollers is in contact with a roller of the next set, so that, ink being provided for the ductor roller and the press being in operation, ink will be in constant process of distribution over all of the rollers in a continuously thinning layer.

In most presses of this character, certain of the sets are all-metallic rollers and are vibratorily actuated, while others are covered or composition rollers, the several kinds being usually so placed that the metal rollers are interposed between the composition rollers 7 the metal rollers being termed the oscillating or vibrating rollers because of their to and fro motion in the press.

In accomplishing my invention I prefer to utilize the metal oscillating rollers to remove so the ink from the other rollers of the press when it becomes necessary to clean up the press incidental to changing ink colors or cleaning-up the press for overnight or for other reasons. I, therefore, provide wiping mechanism for removing ink from an oscillating roller, the roller in its rotative contact with one or more of the other rollers decreasing the ink film thereon in decreasing amountsas the ink. is wi ed from the oscillating roller until allof the ink is removed from all of the rollers.

The ink-removing or wiping device includes a wiper strip 8 of relatively soft metal such as copper or the like and of substantially as the length of the roller. A strip 8 is fixed to a carriage 9 mounted upon a body member 10 provided with supporting arms 11 and 12 suspendingly hinged from

brackets

13 and 14; clamped to a press tie rod 15 or other support at opposite sides of the press adjacent to the oscillatory roller from which the ink is to be removed, as hereinafter described.

The carriage 9 comprises a casting having a flange 16 projecting laterally therefrom to which the wiper strip 8 is secured by screws 17. On the side of the carriage opposite the flange 16 is a V-shaped rib 18 slidably received in a V-shaped groove 19 of a depend ing flange 20 on the bodymember-10. The body member is also provided with a laterally extending tongue 21 received in a shouldered portion 22 on the top face of the carriage for iding the carriage in sliding movement. 11 order to retain the carriage from dis lacement on its slide I preferably provide astening devices 23, such as spring clips, attached to the bottom edge of the flange 19 of" the body member by screws 24 having upturned ends 25 yieldingly engaging the carriage so that the carriage is retained inengagement with the flange, but 1s permitted to slide along the body member.

Extending along the rear edge of the bodymember is an ink-receiving pan or trough 27, which receives the ink as it is wiped from theroller by the strip 8.

Fastening devices such as bolts 28 attach the supporting arms 11 and 12 to the respective ends of the body member, the bolts extending through a flange 29 formed at the base of thearms and engaging the flat face 30 of the body member. The arms 'project at an angle to the flanges 29 to provide an inclining relation of the body member for inducing ink wiped from the roller to run into the pan 27 The upper ends of the bracket arms are provided with hooks 31 for engaging pins 32 projecting laterally from the

brackets

13 and 14. The

brackets

13 and 14 are provided at their lower ends with semi-circular seats 33 to receive the tie rod 15 and are retained thereon by ca s 34 having seats 35 complementary to the seats 33 and are clamped thereto by cap screws 36 extending through the brackets and into cars 37 on the caps. The upper ends of the brackets carry integral sleeves 38 which receive reduced extensions 39 on the pins 32, the pinextensions being secured in the sleeves by set screws 40 threaded into ,the sleeves.

In orderuto, prov de for su ort of the strip in adjusted. relationnin parallel contact 'withthe, roller; the pins are provided with screws 41 threadedly projecting therethrongh, so that the end of, the screws receive. the hooks, ofthe supporting arms, the adjusting screwsbeing lockedby set screws 42 threaded into the end of. the. pins 32 and engaging the screws 41. The brackets are retained onthe hooks'by-winged set-screws 43 threaded through the arms below the horizontal diameterof the pins--32 to retain the hooks thereon. a The set screws are tightened and then slackened ofi just enough to permit the arms to pivot on the pins.

The arms 11 and 12 are connected about midway of their length by a spreader rod 44 having threaded ends 45 receiving nuts 46 and 47 at each side of the arms so that the nuts may be manipulated to spread the arms outwardly and truss the body member to remove bow in the center of the wiper strip 8.

- In order to-retain the wiper strip in yielding contact with the roller the arms 11 and 12 are provided in line with the rod 15 with hook-shaped members 48 comprising threaded shankportions 49, slidably received in suitable apertures in the arms and depending hooks 50 for engaging over the rod 15. Knurled nuts 51 are threaded on the threaded portions of the hook member for compressing a spring 52 sleeved on the shanks between the brackets and the adjusting nuts, the springs pivoting the arms on the rod to press the blade against the roller and the pressure being adjustable by the knurled screws.

As before stated the oscillatory roller moves to and fro transversely of the press and in order to permit the strip 8 to seat itself in any irregularities in the surface of the. roller and to retain its seat, it is desirable that the strip be caused to move with the roller. This is accomplished by providing the carriage at its ends with laterally proj ecting roller brackets 53 carrying cone-shaped rollers 54 which are in contact with and engaged by the ends of the roller as clearly shown in Fig. 7. The roller brackets 53 are adjustable for different length vibrating rollers and to allow for wear, and comprise base members 55 having sloted apertures 56 through which-cap screws 57 are threaded into suitable sockets in the carriage flange 20 and forwardly projecting pintles 58 on which said rollers 54 are mounted, the rollers being retained thereon by washers 59 and nuts 60 threaded onto the ends of the pintles.

Therefore, it is apparent that as the roller moves to and fro in the press, the carriage will be moved thereby on the body member.

Attention is here called to the fact that I position the wiper 8 at substantially right angles to the ink roller as I find that thereby the ink is more easily removed from the roller,

without chattering or cutting of the blade in to the roller.

In assembling the device on a press the

arms

13 and 14 are applied at the ends of the tie rod 15 of-the press and securely tightened thereon so that the pins 32 are in substantial alignment. The brackets 11 and 12 carrying the wiper mechanism are hooked over the pins 32 and the adjusting nuts 51 manipulated to bring the wiper strip 8 into contact with the ink roller. The adjusting screws 41 in-the p ns 32 are ad usted verticallyreh ative to each other and the roller to brin the strip 8 into parallel contact with the in roller. Then the brackets 11 and 12 carryin thecone rollers are adjusted to bring the rol ers into contact with the end faces of the ink roller so that the carriage will be moved to and fro therewith, after which the thumb screws 43 are adjusted to prevent displacement of the arms 11 and 12 from the pins 31.

As the ink roller frictionally engages the soft metal strip 8, the strip will automatically seat itself in line contact with the surface of the roller as well as into the minute depressions usually found on the surface of such rollers; and the strip, bein held in ielding contact with the roller, Wlll always be engaged therewith and will remove not only the body of the ink but also the remaining thin fluid such as gasoline or the like which is used to deterge the waste ink in order that it will freely leave the rollers and flow into the receiving pan 27 The strip is, therefore, adapted to wear itself into intimate contact with the roller, whereby I provide for complete removal of the ink and thin fluid, which is most essential because all tints of the ink must be removed before a new supply of ink for printing delicate tints such as light pinks, blues and the like, can be used, especially if the ink previously used is of a dark shade. The yielding pressure also prevents undue or harmful friction against the rollers and prevents any ink solids from passing or being forced between the wiper strip and roller, which might scarify the surfaces.

When the press has been cleaned, the de. vice is unhooked from the

brackets

13 and 14, the carriage with its wiper strip may be removed and a new carriage and wiper strip attached to the body member and used upon another press. I prefer to rovide a separate carriage and wiper strip or each press because of the difference in the surfaces of the rollers which results in the production of various irregularities in the wiper strips.

When the wiper strip has become worn to such an extent that the carriage almost contacts the roller, the strip may be reversed so that its opposite edge comes into wiping contact with the roller.

What I claim and desire to secure by Letters Patent is: i

1. In combination with a press having an oscillating roller, a wiper strip contacting the oscillating roller, and means for moving the wiper strip in synchronism with the oscillating roller.

2. In combination with a press having an oscillating roller, a wiper strip contacting the oscillating roller, means for moving the wiper strip in synchronism with the oscillating roller, and means for yieldingly retaining the wiper strip in contacting position.

3. In combination with a press having an oscillating roller, a wiper stri contacting the oscillating roller, means or pivotally mounting the wiper strip on the press, means for moving the Wiper strip in synchronism with the oscillating roller, and means for yieldingly retaining the wiper strip in contacting position.

4. In combination with a press having distributing rollers, a cleaning device comprising a body member pivotally suspended from the press, a carriage mounted on the body member, a wiper strip supported by the carriage, and means foryieldingly retaining the wiper strip in Wiping contact with one of the rollers.

5. In combination with a press having distributing rollers, a cleaning device comprising a body member pivotally suspended from the press, a carriage mounted on-the body member, a wiper strip supported by the carriage, means for yieldingly retaining the wiper strip in wiping contact with one of the rollers,.and means for adjusting the body member to maintain the wiper strip in horizontal alignment with the said roller.

6. A cleaning device for presses having an oscillating roller, comprising a body member for attachment to the press, a carriage slidable on the body member, a wiper strip on the carriage, and means on the carriage for engaging the oscillating roller to move the carriage in synchronism with the roller.

7. A cleaning device for presses having an oscillating roller, comprising a body'memher for attachment to the press, a carriage slidable on the body member, a wiper strip on the carriage, means on the carriage engaging the oscillating roller to move the carriage in synchronism with the roller, and means for yieldingly retaining the wiper strip in wiping contact with the roller.

8. A cleaning device for presses having an oscillating roller, comprising a body member for attachment to the press, a carriage slidable on the body member, a wiper strip on the carriage, means on the carriage for engaging the oscillating roller to move the carriage in synchronism with the roller, and means for adjusting the wiper strip in parallel alignment with the roller.

. 9. A cleaning device for presses having ink distributing rollers, comprisin a body member, arms on the body member or attachment to the press, a carriage on the body member, a wiper strip on the carriage, hook members on the arms for engaging the press, and means on the hook members to yieldingly urge thewiper strip into wiping contact with one of the rollers.

' 10. In combination with a printing press having ink distributing rollers and a tie rod, a' cleaning device comprising ,supporting brackets attached to the tie rod, a body member pivotally suspended from the brackets, a wiper supported by the body member, and

means on the body member engaging the tie rod to yieldingly retain the wiper in wiping contact with one of the rollers.

11. In combination with a printing press having ink distributing rollers and a tie rod, a cleaning device comprising supporting brackets attached to the tie rod, pins on the brackets, a body member, arms on the body memberhaving hook portions en aging said pins to pivotally suspend the b0 y member, a Wiper supported by the body member, and means onthe body member engaging the tie rod to yieldingly retain the wiper in Wiping contact with one of the rollers.

12. In combination with a printing press having ink distributing rollers and a tie rod, a cleaning device comprising supporting brackets attached to the tie rod, pins on the brackets, a body member, arms on the body member having hook portions engaging said pins to pivotally suspend thebody member,

'5 wiper supported by the body member, means on the body member engaging the tie rod to yieldingly retain the wiper in wiping contact with one of the rollers, and adjusting means on the pins engaging the hooks for horizontally adjusting the wiper.

13. A cleaning device for presses having an oscillating roller, comprising a body member for attachment to the press, acarriage slidable on the body member, a wiper .strip on the carriage. means on the carriage engaging the oscillating roller to move the carriage in synchronism with the roller, and

' means trussing the body member to maintain the wiper strip in longitudinal alignment with the roller.

14. In combination with a press having an oscillating roller, a wiper strip contacting the roller, means associated with the wiper strip and engaging the roller for moving the wiper strip therewith, and means for yieldingly retaining the wiper strip in wiping contact with the roller.

15. In combination with a press having an oscillating roller, a wiper strip contacting the roller, and means engaging the ends of the roller to move the wiper strip therewith.

16. In combination with a press having rollers, a wiper strip contacting one of the rollers, means for pivotallv supporting the wiper strip in a plane extending radially from the axis of the roller whereby the wiper strip is supported at substantially right angles to the surface of the roller, and means for yieldingly retaining the wiper strip in position for contact with the roller.

17. In a cleaning device for presses havin 5 ink distributing rollers, comprising a body member, arms on the body member for attachment to the press, a wiper strip carried by the body member, hook members on the arms for engaging the press, and means on the hook members for yieldingly urging the wiper strip into wiping contact with one of the rollers.

18. A cleaning device for presses having an ink distributing roller, comprising a body member for attachment to a press, a wiper strip slidable longitudinally on the body member, and means for retaining the wiper strip in contact with the roller.

19. In combination with a press having an oscillating ink distributing roller, a body member for attachment to the press, a wiper strip slidably carried by the body member and contacting the roller, roller brackets engaging the ends of the roller to move the Wiper strip therewith, and means for adjusting the brackets with relation to the roller.

In testimony whereof I afiix my signature.

WILLIAM J SNYDER.