US1619018A - Adjustable roller track for gordon printing presses - Google Patents

Description

March 1 1927. 1,519,018

I R. J. FRACKELTON ET AL ADJUSTABLE ROLLER TRACK FOR GORDON PRINTING PRESSES Filed June 27. .1921 3 Shets-Sheetl ATTORNEYsS Mal ch 1 9 1%2'? 1,619,018

R. J. FRACKELTON ET AL ADJUSTABLE ROLLER TRACK FOR GORDON PRINTING PRESSES Filed June 27, 1921 I5 Sheets-Sheet 2 4 0a ya A TTORNEY 1,619,018 March 1 5 2 R. J. FRAcKELTON ADJUSTABLE ROLLER TRACK FOR GORDON PRINTING PRESSES Filed June 27. 1921 I5 Sheets-Sheets TORS Ear/ 7%c/ y 0 406/ BY Wet/enckd J/xf ATTORN S Patented Mar. 1, 1927.

'tlhll'I'E."Dd STATES PATENT OFFICE.

ROBERT J. FRAOKELTON, OF SUMMIT COUNTY, AND FREDERICK C. SIXT, OF CLEVE- LAND, OHIO, ASSIGNORS: TO THE CHANDLER AND PRICE COMIPANY, OF CLEVE- LAND, OHIO, A CORPORATION OF OHIO.

ADJUSTABLE ROLLER TRACK FOR GORDON PRINTING IRESSES.

Application filed June 27, 1921. Serial No. 480,898.

The present improvements, relating, as indicated, to so-called Gordon or platen printing presses, have more particular regard to the provision of means for elevating the inking rolls inthat portion of their path of travel wherein they normally contact with the disk that is utilized to distribute the ink on to said rolls. It is of course desirable that such rolls, which are of a special soft composition, should not be allowed to rest on the disk when the press is standing idle for any reason, since otherwise the portion of the surface of the rolls directly resting on the disk will tend to become flattened and so the rolls be damaged for further use. It would of course be just as objectionable for the rolls to rest on the bed of the press, and, anyhow, the latter re quires to be kept clear for the purpose of changing forms.

The object of the present invention, ac-

cordingly, is to provide a simple and easily operated device for leaving the rolls clear of the disk and retaining them in such position when desired.

To the accomplishment of the foregoing and related ends, said invention, then, consists of the. means hereinafter fully described and patricularly pointed out in the claims, the annexed drawings and the following description setting forth in detail certain mechanism embodying the invention, such disclosed means constituting, however, severalof the various mechanical forms in which the principle of the invention may be used.

In said annexed drawings Fig. 1 is abroken side elevation of the por- 7 tion of a press of the type in hand that is of present interest, showing one form of our improved device attached thereto; Fig. 2 is a transverse section of such device, on a plane taken through the pivotal points of the mechanism. 7 Fig.- 3 is a View similar to that'of Fig. 1, but showing a modification in construction; Fig. ft is a rear end elevation of such modified construction; and Figs. 5 and 6 are views similar to Figs. 3 and 4, but showing still another modification.

Only the upper portion of thebed 1 of the press mechanism proper is shown in the several figures of the drawing, it being understood that such bed is provided with an arm and track 5.

approximately vertical face, to which the form (not shown) is secured, and that there is mounted on its upper face a suitable ink distributing disk. In normal operation of the press the inking rolls are carried across such disk and thence downwardly across the form whereupon their movement is re versed, a fresh coating of ink taken up from the disk and so on. ported at their respective ends in saddles that are carried by oscillatory arms or frames of each side of the bed, the saddles, and thus the rolls, being drawn towards the agency of springs associated with such frames. Accordingly, save as special means be provided, as are now to be described, when the rolls are allowed to rest stationary on the disk they will be held thereagainst under the considerable pressure of such springs, with the result that the surface of the rolls will be distorted in the fashion above referred to.

In the construction shown in Figs. 1 and 2, we mount a pair of brackets 2 on top of thebed 1, one on each side of the disk, one only of such brackets appearing in the figure. This bracket terminates above in twoarms 3 and 4, the first of which extends to a point adjacent the upper end of the corresponding track 5, over which the wheels two arms will lie on an angle corresponding I with the angle of inclination of the disk. Pivotally supported at its front end onarm 3 is a bracket member or track 7 preferably formed of sheet metal, having the angular cross-section shown in Fig. 2,'and provided with a curved extension or lip 8 at such piv oted end, bridging the space between the Near its upper end bracket member 7 is formed with an elongated slot 9, to which is slidably attached one end of ahandled lever 10 that is pivotally attached to the adjacent bracket arm 4. Slot 9 is so disposed and of such length that when the lever is in the horizontal position shown in Fig. 1, bracket member 7 is dropped slightly below the surface of the disk and the inking rolls thus left free to These rolls are sup-v contact with the latter. However, upon depressing thelever 10, the end thereof, thus slidably connected with bracket member 7, raises the latter into the position indicated in dotted outline in 1, and at the same time such end is carried a trifle beyond the pivotal axis of the lever itself so that the bracket member will be retained in the position indicated until the lever is again swung back to its normal position.

In the construction shown in Figs. 3 and 4 the bracket is made in two parts, viz, a lower section 11 and an upper section 12, the latter being provided with arms 13 and A, to which a bracket member ortrack 15, corresponding with bracket member 7, is fixedly attached. The upper section 12 of the bracket is pivotally connected to the lower at its forward end about apivotal axis 16 and is connected thereto at its rear end through the medium of aneccentric pin 17 that engages aslot 18 in the adjacent portion in such upper bracket section.Eccentric pin 17 is arranged to be oscillated throughthe medium of a lever 19 so that by swinging such lever from the normal position shown in i3 and 4 to an approximately horizontal position, the rear end of bracket section 12 will be raised upwardly and thebracket member 15 tilted substantially in the same way as in the first described construction, and with the same result, so far as concerns the effect on.

the inking rolls.

In the remaining modification, that shown in Figs. 5 and 6, abracket 20 is employed that is vertically slidably attached to thebed 1 through the medium ofvertical guide pins 21 fitted in aperturedlugs 22 on the inner face of such bracket, and thebracket member'or track 23 is fixedly attached to the respective arms at and 25 of such bracket. 1-111 eccentric 26, provided with ahandle lever 27, is oscillatorily journaled in a supplemental bracket or standard 2 8, and engages a transverse slot inbracket 20, so that by rocking such eccentric such last-named bracket may be bodily raised, and therewith thetrack 23, from the position of the latter shown in full lines to the position shown in dotted outline.

By means of the elements involved constitute a cam means which raises the track and also positively holds or looks it against accidental displacement, and the foregoing device in either of the several forms illustrated slight distance sufficient to hold them clear of contact with the disk, this without in any way disturbing the latter or modifying its construction. The brackets that constitute the main supporting element of the present device may be readily attached to the bed of any standard Gordon or platen printing press without requiring any special modifi cations or the removal of the press to the shop. In operation, the device is of course extremely simple, and at the same time it is compact and not liable to get in the way.

Other modes of applying the principle of our invention may be employed instead (bf the one explained, change being made as regards themechanism herein disclosed, provided the means stated by any of the following claims or the equivalent of such stated means be employed.

We therefore particularly point out and distinctly claim as ourinvention 1. In a platen printing press, the combination of a bed and a track for the passage of the inking rolls over the form, a second track independent of but adapted to form a continuation of said first-named track adjacent the ink-distributing disk, and means for raising said second track, said means also constituting a lock against accidental, displacement. 5

2. In a platen printing press, the combination of a-bed and a track for the passage of the inking rolls over the form, a second track independent of but-adapted to form a continuation of said first-named track adjacent the ink-distributing disk, and cammeans for raising said second track and locking the same against accidental displacement.

3. In a platen printing press, the combi nation of abed and a track for the passage of the inking rolls over the form, a second track independent of but adapted to form a continuation of said first-named track adjacent the inlcdistributing disk, and means for raising said second track, said means including an element movable about a fixed center and a enacting recess for said movable element.

4. In a platen printing press, the combination of a bed and a track for the passage of the inking rolls over the form, a second track independent of but adapted to form! a con tinuation of said first-named track adjacent the ink-distributing disk, means for supporting said second track, and an operating lever fulcrumed in said supporting means and engaging in a, slotto-ra-ise or lower the track.

Signed by us, this 22 day of June, 1921.

aonnar VJ. FRAC'KELTON. FREDERICK o. SIXT.

Images