US1941848A - Perforating attachment for printing presses - Google Patents

Description

Jan. 2, 1934. s. MEcKLl-:R 1,941,848

PERFORATING ATTACHMENT FOR PRINTING PRESSES Filed March 21', 1932 l, l 'lf/7 is brought into contact with the paper.

Patented Jan. 2,

Tes

PRINTING PRESSES Y Samuel Meckler, St. Paul, Minn.y Application March 21, 1932.` SerialV No. 600,143

2 claims. (ci. 164-98) My invention relates to a new and useful scoring and perforating device adapted for use simultaneously with the l printing process of `such presses. g v v Y The main object is to provide a device for positively and Yeiiciently Y perforating paper run through a printing press, said perforating means adapted to be mounted" in a' chase in proper prefdetermined position relative to the type mounted in the chase in the usual manner well known in the printing field. A further object is to produce scoring or perforations which are clear and not inked, a feature hitherto not accomplished as far as IV am Y aware. Other objects and advantages 'of my device are hereinafter fully set forth and illustrated in the accompanying drawing, in which,-

Figpl is a partly perspective iront view of a printing press with: one of my perforating devices in operative positions, only such parts of the press being shown as are deemed necessary for-a clear Lmderstanding of the device..

Fig. 2 is a face viewof one oi my devices in a preferred form.

' Fig..3` is a longitudinal sectional view as on line 3 3 in Fig. 2,` and including a platen 9.

Fig. 4 is a detail View of the left hand end portion of Fig. 3 with the perforation blade in actual contact and making a row of perforations in a "sheet of paper. Y

Fig. 5 is a cross sectional view as on line 5-5 in Fig. 4 but modied to show a scoring blade instead of a perforating blade. v

Referring to the drawing by reference numerals, I have illustrated in Fig. 1 such parts ofv a press pertaining to the use of my device and will be readily understood to any one familiar with press construction.

6 is the ink distributing plate for the usual inking rollers (not shown) reciprocable over its surface, said rollers inking the type, designated '7, xed in the usual manner in a quadrangular chase 8. 9 is the main platen on a sheet of paper 10 and is retained by grippers 11 while the type Obviously the type area is within or between the grippers 11.

My device comprises an elongated metal bar 12 of suitable length, said bar being actually a deep channel bar with anV elongated central slit or opening 12A extending inwardly from its face to a bottom 12B and to integral end walls 12C. In Fig.r1 such bar is shown mounted horizontally in chase 8 and over a certain area of type 7 both retained removably in the chase by the wedge like blocks 13 well known to printers. The depth of perf orating Y wardly of which it consists of a straight shank;

bar 12 is less than the height of the type, the :facev of saidtype being indicated by dotted lines 14 inr Fig. 3 in which the type is approaching the paper 10 downwardly.

Within the slot 12A'is reciprocably retained a 60 smallerand likewise slotted bar 15 having integral solid :end walls 15C and an outwardly opening slit 15A in which is rigidly andfremovably'retained a blade 16 by means of set screws 41*?. The exposedY edge of this blade normally protrudes from the inner bar beyond and parallel to the aceothe main bar as clearly, illustrated at B in Fig. 3 but not as far out as Vthe vface of the type (14); saidA edge for perforation purposes comprising aline of prongs or serrations designated S. yThe just A described`A parts are assumed to be-intiallyI inthe relative retracted positions shown'in Fig. 3, bar 15gV bearing inwardly against bottom 12B oi the main bar12'.v l V -W At each end wall `12C Vis provided a reciprocable shoe member 18 each" slidably bearingv against the inner surfacefof its wall- `12C andl having an exterior enlargement or foot ISF in-y Interposed between each cain andthe Yadjacent 80 end of -innerbar 15 ispivotally mounted at 19 a` rocking cam member 20 each having a beam lever action on its pivot 19 whichkis iixed inthe side walls of main bar 12. The tapered inner end of each of said rock member or cam 20 contacts loosely, and both simultaneously in slight depressions or notches 21 of a shoe118 and the endy wall 15C of inner bar 15. The outer end of each Vcam is also reduced and formed with an integral knob 20K adapted to engage loosely in an inwardly opening cavity 18K of the adjacent shoe. The shoes 18 project outwardly normally from the face of bar 12 and are pressed or impeiled outwardly each by suitable spring means such as a coil spring 22. Obviously this outward pressing of the shoes keeps the members 20 in the inclined positions shown in Fig.Y 3 and the bar 15is retained in innermost retracted position in bar 12.

In said Fig. 3 the bar is assumed to be pressing 100 down toward *a paper 10 to be printed.` The springs 22 hold the shoes 18 in projected position and the bar 15 simultaneously retracted by means Iof the cam members 20. The shoes 18 Contact rst with the grippers 1l or correspond 105 ing members, the type in the chase continueA down toward the paper. Obviously as the type move down with bar 12 the shoes 18 arepressed inwardly rocking the cam 20r simultaneously and the said latter rocking movement pro- 11,0v

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