US1196531A - Automatic roller-support for platen printing-presses. - Google Patents

Description

W. W. DRUMIVIOND.

AUTOMATIC ROLLER SUPPORT FOR PLATEN PRINTING PRESSES.

APPLICATION FILED JAN. n. 1916- 1 1 96,53 1 I Patented Aug. 29, 1916.

2 SHEETSSHEET 1.

g j ATTORNEYS W. W. DRUMIVIOND.

AUTOMATIC ROLLER SUPPORT FOR PLATEN PRINTING PRESSES.

APPLICATION FILED IAN.1I. 1910.

1 ,1. 96,58 1., Patented Aug. 29, 1916.

2 SHEETSSHEET 2.

A TTORNE Y8 m: NaRms PEYERS cu..PnomL1-nm., wuumomn. o. c.

other; ie rnnrr WALTER WILLIS DRUMMOND, OF STAFFORD, KANSAS.

AUTOMATIC ROLLER-SUPPORT FOR PLA'IEN PRINTING-PRESSES.

Application filed January 11, 1916.

To all whom it may concern:

Be it known that I, WALTER W. DRUM- MoNn, a citizen of the United States, at present residing in Stafford, in the county of Stafford and State of Kansas, have invented a new and Improved Automatic Roller-Support for Platen Printing-Presses, of which the following is a full, clear, and exact description.

My invention relates to a support for the inking rollers of a platen press, such as a Gordon press, and adapted for use with a chase so that when the chase with the form is on the bed of the press, the support will positively be moved to and be sustained in a raised position and the inking rollers will travel at the type level and be given a traveling movement over the type corresponding with the peripheral speed of the rollers so that the rollers will not rub or swipe the type, the support being automatically and positively moved to a depressed position as the rollers recede from the printing form in returning to the ink plate.

The advantages of my improved attachment are that it will not smut the tympan, that is, will not print thereon; it will not interfere in any way with the location of the sheet grippers. The support is so arranged and operated that it will not become broken by reason of carelessness on the part of the pressman in placing a gripper over the roller support as is frequently done with the roller support in general use; it may be positioned even directly underneath the grippers, since it will positively be depressed within the plane of printing form when the impression is made; also the improved support will in no way interfere with the placing of guide pins anywhere desired on the tympan.

Other advantages will be apparent as the description proceeds.

In carrying out my invention in its preferred form, use is made of side bars presenting surfaces on which the ends of the printing rollers may travel in passing over the printing form in both directions. The said bars have guided up and down movement, preferably in channel bars, which bars are adapted to be positioned in the chase at Specification of Letters Patent.

Patented Aug. 29, 1%16. Serial No. 71,500.

each side or at other locations and locked therein by the furniture with the locking of the form. The roller supporting members are adapted to be automatically depressed within the plane of the form as the inking rollers return to the ink plate, and upon the Reference is to be had to the accompany ing drawings forming a part of this specification in which similar reference characters indicate corresponding parts in all the views.

Figure 1 is a transverse vertical section showing portions of platen press with my improved roller support thereon; Fig. 2 is a front view of'the roller support showing same in position and including the inking rollers; Fig. 2 is a' fragmentary front view of the roller support in position, the view being on a larger scale; Fig. 3 is a transverse vertical section ofa chase having my improved roller support, showing the support in the outer or raised position; Fig. 4 is a. view similar to Fig. 8 showing the roller support depressed as when the impression is being made; Fig. 5 is a fragmentary cross section on theline 55, Fig. 3, and indieating aportion of one of the inking rollers; Fig. 6 is a fragmentary view similar to Fig. 3 and given to show a slight modification; and Fig. 7 is a similar view showing a further modification.

The invention is adapted for use with an ordinary platen press of which I have indicated a portion of the frame 10, having a bed 11, and platen 12. A series of inking rollers 13, are shown. The chase 15, of ordinary construction, receives any printing form 14:, which is held in place in the chase by the usual furniture 1 1. The chase 15, is held on the bed 11, by the usual latch16. The roller wheels 17, travel on tracks 18, as

usual, one of the roller wheels, indicated by the character 17, slightly modified, as will be hereinafter explained.

The numeral 19 indicates the usual ink plate and 20, the grippers.

My attachement includes, in the illustrated form, channel bars 21, adapted to be positioned in the chase adjacent to the end bars or otherwise, and to be locked in the locking of the form. Movably supported in each channel bar is an angle iron 22, one member of which is received in the said channel bar, the other member 23, being disposed in front of the chase 15, and parallel therewith. The members 22, with-their flanges 23, constitute the roller supports for the inking rollers 13 in passing over the form 14. In the illustrated form the roller supports are arranged at the sides of the chase and the operating and tripping means are disposed aecordingly.

I provide means for giving guided movement to the roller supports from the depressed to the outer position and vice versa, forwhich purpose I may produce oblique slots 24, in the members 22, and notches 25 at the inner ends of the slots, there being transverse pins 26, extending across the channel bars 21 and passing through the said slots 24. The arrangement is such that the pins 26, will be located in the notches 25,

and sustain the roller supports in the raised or outer position as hereinafter further referred to. In Fig. 6, instead of the slots 24, and pins 26, with the notches 25, I provide alternate projections 24, and notches 24 in the roller support 22, and corresponding projections 26 and notches 26 in the channel element 21*.

The supports 22, are under the influence of retractile springs 27, the inner ends of which are secured as at 28, in the channel elements 21, while the lower spring 27, is secured at its outer end as at 29, to the support 22, the upper spring 27, being secured at its outer end to a transverse pin 30, on the support 22. The lower end 31 of each support 22. is of reduced depth to give clearance and the front flange or face 23, of the support, is slightly rounded at the lower end as at 32, to prevent damaging contact with the ink roller.

Each support 22, is suspended on toggles 33, joined as at 34, and adapted to break joint in an outward direction. The upper toggle member 33, is pivotally connected by a pin 36, with post or bar 35, which rises from the upper end of the channel 21. The said upper member 33, of the toggle, has a trip member 37 which preferably has an articulated connection with the member 33, by separately pivoting said member 33, and trip 37, on the pin 36. A coil spring 38, on the pin 36, presents its opposite arms to the backs of the toggle member 33, and the trip member 37.

The toggles 33, are offset to one side of the roller supports 22, 23, the lower toggle member 33, being pivoted to an extension 30 of the pin 30. It will be observed particularly from Figs. 2 and 5, that the roller wheel 17, of the advance inking roller 13, is extended inwardly to lie closer to its roller 13, whereby to bridge the space between the tracks 18, and the roller supports; thus the inner extension 17", of the roller wheel 17, will travel over the toggles 33. When the roller supports are disposed in the form inward from the ends of the inking rollers it will be obvious that the toggles and trips will then be acted upon directly by said rollers.

In operation the springs 27, will normally 'tend to depress the roller supports to the positions indicated in Fig. 4, thus causing the toggles 33, to break on their pins 34, in an outward direction. When therefore, a roller, as indicated by the dotted lines in Fig. 4, moves downwardly toward the term 14, from the ink plate 19, as indicated by the arrow, Fig. 4, the extension 17, will contact with the toggle 33, depressing the same to bring the toggle members into alinement and parallel with the post 35, from which the toggle is hung. the toggle, the roller supports 22, will be raised or moved to the outer position against the tension of the springs 27, until finally the notches 25, are presented to the pins 26. The roller supports 22, are sustained in the outer position owing to the toggle pivots being on a dead line and also by reason of the engagement of the pins 26, in the notches 25. In the raised position the roller supports are type-high so that the type form will be properly inked by a rolling contact only of the rollers and a clear print obtained. After the form has been inked, and the rollers returned toward the ink plate 19, the first roller approaching the trip arms 37, will rock the said arms on the pivot 36, the springs 38, yielding. The remaining rollers, however, on the toggle members 33, will hold the same in the depressed position and prevent the spring 38, from throwing the toggle I outward. When, however, the last rollers 13, having their roller wheels 17, extended inwardly as at 17 approach the trip arms 37, there being no further restraint on the toggles 33, the spring 38, will cause the toggles to break in an outward direction and the spring 27. will depress the roller supports 22, to the position shown in Fig. 4, ready for the printing operation. By positively operating and depressing the roller support at time of impression no damage will occur by reason of the grippers 20, or gage pins (not shown), contacting with the In the depression of l l (l roller supports. Also, no great care will be required on the part of the pressman since the positions of the roller supports are accurately determined, and also the positive operation of the roller supports even take care of any unexpected carelessness on the part of the pressman. In some presses it is necessary to place the upper pivot 36 Within the level of the roller support as in Fig.

7 in which case the upward thrust, of the inking rollers 13, tends to cause the toggle to break joint in an outward direction, to prevent which a complementary slot 24) is produced in the roller support 22 for re- 5 ceiving the pin 26*. (See Fig. 7). There is thus produced a hook member which engages the said pin 26, thereby positively holding the roller support in the depressed position. The same springs 27 and 38 are 0 employed and the action of the inking rollers on the trip member 37 is the same as previously described. The post is modified in accordance with the depressed position of the pivot 36 5 Having thus described my invention I claim as new, and desire to secure by Letters Patent:

1. A roller support for printing presses, including separate roller supporting mem- 30 here, adapted to be separately positioned and sustained on the press to receive the rolling contact of the inking rollers, and means to automatically raise and depress the said supporting members as the inking rollers approach the form and recede therefrom.

2. A roller support for printing presses, including roller supporting means adapted to be positioned and sustained on the press and presenting side members to support and 0 receive the rolling contact of the inking rollers in the travel of the latter in both directions over the printing form, and means to raise and depress the said supporting means as the inking rollers approach the form and recede there-from.

3. A roller support for printing presses, including side members on which the rollers travel in both directions, said members being adapted to be positioned on a printing bed at the form, and means to raise and depress said members, said means being subject to the reverse movements of the inking rollers.

i. A roller support for platen printing presses, including depressible side members adapted to be positioned at the form, toggle elements connected with said members, and trip means adapted to be engaged by the inking rollers in approaching a form and returning to the ink plate.

0 5. A roller support for platen printing presses, including depressible side members adapted to be positioned at the form, toggle elements connected with said members, and trip means adapted to be engaged by the inking rollers in approaching a form and returning to the ink plate, the said trip means having an articulated relation to the toggle elements, together with spring means resiliently engaging the said toggle elements and trip means.

(3. A roller support for platen printing Dresses, including side bars presenting surfaces adapted to receive the rolling contact of the inking rollers, members on which said bars are relatively movable to raised and depressed positions, the said members being adapted to be positioned in a chase at the sides thereof, means connected with said bars and movable to depress or to elevate the said bars and an inking roller having a running wheel a portion of which travels in the path of the said means to engage said means.

7. A roller support for platen printing presses, including roller supporting bars, means to mount said bars in a chase to move to raised or depressed positions, springs tending to move the bars to depressed positions, and means to move the bars'to a raised position against the tension of said springs, said last mentioned means being adapted for engagement by an inking roller in traveling in reverse directions.

8. A roller support for platen printing presses, including elements adapted to be positioned in a chase, roller supporting bars movable relatively to said elements to depressed or raised positions, means controlled by the movements of inking rollers to cause the said bars to assume the raised positions by the movements of the inking rollers in approaching said bars, means controlled by the rollers to depress said bars as the rollers leave the same, and means to lock the said bars in the raised position.

9. A roller support for printing presses, including channel elements adapted to be positioned in a chase, angle bars each presenting a member having guided movement rela tively to the channel elements, and a member presenting a surface to receive the rolling contact of inking rollers, springs tending to depress the said angle bars in the channel elements, suspending means for the said bars, said suspending means including j toggle elements, and trip means adapted for engagement by an inking roller and aranged to move the toggles in opposite directions in response to the reverse movements of said inking roller. v

10. In a roller support for printing presses, means on which the inking rollers travel in both directions, and means to clepress said first means as the rollers leave the same.

11. A roller support for printing presses including roller supporting means adapted to be positioned and sustained on the press and presenting side members to receive the In testimony whereof I have signed my rolling contact of the inking rollers, means name to this specification in the presence of to raise the said supporting means to the two subscrlbing witnesses.

supporting position as the rollers approach WALTER WILLIS DRUMMOND. 5 the same, and means to depress the support- Vitnesses:

ing means from the supporting position as H. L. MCCURDY,

the rollers leave the same. E. B. WEIR.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.

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