US1110723A - Printing-machine. - Google Patents

Description

G. SPIESS.

PRINTING MACHINE.

APPLIOATION FILED MAR. 7, 1913.

1,1 10,723, Patented Sept. 15, 1914.

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PRINTING MACHINE.

APPLICATION FILED MAR. 7, 1913.

1,1 10,7281. Patented Sept. 15, 1914.

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G. SPIESS.

PRINTING MACHINE.

APPLICATION FILED MAR. 7, 1913.

1,1 10,?23. Patented Sept. 15, 1914.

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GEORG SPIESS, OF LEIPZIG-REUDNITZ, GERMANY.

PRINTING D'IACHINE.

Specification of Letters Patent.

Patented Sept. to, 1914i.

Application filed March 7, 1913. Serial No. 752,744. 1

certain new and useful Improvements in Printing-Machines, of which the following is a specification.

The printed matter in business books such.

as ledgers and the like has hitherto been produced in two separate stages inasmuch as the heading of all sheets is produced in one printing operation and the foot on each sheet in a separate or second printing operation.

Attempts have already been made to print the head and the foot on a sheet in one single operation simultaneously, but it Was found that too large a fundament or platen became necessary for that-purpose.

Since business books of the kind referred to are as a rule of exceptionally large size, it was inconvenient for the sake of printing say only one line at the top and one line at the bottom of such sheets to mask the greatest portion of the platembecause this manipulation necessitates an excessive amount of labor and time particularly in connection with cylinder presses.

Moreover, considerable inking losses had to be put up with; since high speed presses for such large printing forms must necessarily be provided with a correspondingly large inking device. If it is further considered that high speed presses generally require for their working three to five horsepower and for their attendance a person who as a rule must be experienced and therefore demands a relatively high wage, it is evident that for the purpose of printing business books where only a top and bottom line on each sheet are necessary the method referred to would be rather extravagant. Now this inconvenience arising out of the old method would be the more accentuated the smaller the surface to be printed and since a large number of'business books are now produced in small sizes it may be assumed thatabout 70 70 of the whole production of business books would have to be effected in a most uneconomical manner, ,These drawbacks are to be overcome according to the present invention by the arrangement on the printing head or die of the machine of difierent printing forms which are located side by side and are alternately put into action.

The invention is illustrated by way of example in the accompanying drawings in which: Figure 1 shows a front elevation and Fig. 2 a side elevation of a printing machine constructed in the improved manner. Figs. 3, 3 and 3 indicate separately the position of the printing forms with' regard to the masking sheet and to the sheet to be printed. Fig. 4 is a partial front view and Fig. 5 a partial plan of a portion of the press on a larger scale. Fig. 6 is a partial elevation of a somewhat modified form. Fig. 7 shows in elevation the operating mechanism for the inking device. Figs. 8 and 9 illustrate in lateral elevation the sheet feeding mechanism. Figs. 10 and 11 show in detail in elevation and plan view respectively the de vice for preparing the masking sheet.

In the constructional example shown the sheets A to be printed are fed individually by any known feeding device against a retractable stop and suitably registered, after which they are placed on the platen G and moved forward until they are in contact with the retractable stop D. tion the first impression is made by producing for instance the head of the debit side. The sheet is then mechanically moved to the next stop in whichposition it receives the second imprint or the foot of the debit side. Where the accounts are divided the stops of course would have to be adjusted accordingly.

For the purpose. of inking the printing forms F and G an inking device is arranged on a suitable slide which is provided With teeth adapted to engage with the teeth of a toothed segment whereby it receives a reciprocatory movement, as will hereinafter be more specifically described.

The fgrms F and G for printing the head and foot are located side by side bn the die E. Between this die and the platen C is a frame H which is movable and serves as a carrier ofa sheet of paper or like material.

In this posi- I forms G are,.as will be seen arranged be-- "so as to enablethe forms G to make an im- The disp-lacement'of this frame is effected by means of a bell crank lever I which is operated by a cam K.

The frame H-is always so adjusted that the printing form which should not make an impression on the sheet is caused to descend on the masking sheet R in the frame H, thus producing an impression on thelatter sheet, whereas the other printing form is free to pass through the frame or masking sheet and produces the required impression on the sheet to be printed.

The masking sheet R which is suitably fixed or stretched within the frame H may, if desired, be provided with suitable openings according to whether two or more prlnting forms are required to pass therethrough. I r v The position of the printing forms with regardto the frame H and the sheet A to be printed will be' clearly understood from an inspection of Figs. 3, 3 and 3 The printing forms'F are in this case supposed to pass freely through the openings R in the frame H or the masking sheet and to make their impression Ion, the sheet A located underneath, whereas the printing tween the openings R and S so that their impression is masked bythe frame H and is therefore not made on the sheet A. If it were desired to have the positions changed pression on the sheet A the frameH would be advanced; until its openings S register with or are located immediately beneath the forms G. The sheet A, however, isfadva nced beneath these openings S until the required parts are situated beneath them When the se'cond formsfmay be caused to descendon thepaper. For this second printing position on the sheet A retractable stops may be arranged to which the sheet may be conveyed by suitable bands or other known convenient devices. Y

. It'will therefore be seen that the printing of the head and foot on account sheets of business books may thus be effected during one single passage of the'sheet'through the machine, since the sheet is mechanically advanced and at the same' time the 'masking' sheet .owin Qto the adjustment of the frame i H is cause .to mask one or the other of the printing forms.

In the place of a masking sheetprovided with openings or cut out portions individual paper stripsmay, if desired, be arranged in the frame H of only such width as will be elastic means, as shown for instance in Figs.

4 and 5. It will be seen that when the masking sheet thus held is brought between the printing forms and theplaten C it will recelve the impression from the masked printing form while pressed down on the sheet A underneath it preventing the latter, how ever, from receiving the impression. Thus the masking sheet not only receives the impression from the printing form, which should not print on the sheet A, but it also holds the latter sheet firmly down on the platen while the other printing form produces its impression thereon.

In the particular example illustrated in Figs. 4 and 5, the frame H is supported on coil springs T so that it may rise to its initial position immediately the printing die is drawn up by the machine.

In the constructional form shown in Fig. 6, the printing forms F and Gare arranged in a similar manner on the die E asbefore. The platen C is in this case provided with a divided portion consisting of two parts M and N which are vertically adjustable. Their adjustment in the verticaldirection is effected by a sliding wedge O which iscon nected to a rocking arm P. In Fig.. 6, the

.section M is shown raised and it will be understood that the sheet inserted at this point would receive the impression onlyfrom the printing form F. To enable the printing form Gto print and at the same time to mask the printing form F the wedge 0 is drawn back until the platen section N has risen above the section M. also with this constructional form it is possible to print the head and foot of a sheetin a single passage of the sheet through the machine, at different points alternately and it is quite immaterial whether the sheets are large or not and how far the impressions are distanced one from the other.

Thushook 2 which is-under the influence of a spring 3. The double armed lever Z carries a pin I working in a slot 5 in the lever 1. So long as the pin 4 moves freely within the guide slot 5, the inking device 1s not actue ated, but as soon as the pin ,4 reaches its highest position it is engaged by the coupling hook 2, after which the movementof the lever Z is transmitted to the segment Y and consequently to the inkingv carriage.

10. Suitable projections 11 on these rocking arms extend into the path of respective cams arranged on a cam disk 12. The cams on this cam disk are so arranged as to cause the cams during one revolution of the cam disk to actuate the rocking arms successively and thereby to withdraw the stops D. D and D consecutively.

In printing machines of this kind, moreover, the sheet to be printed must 'be ad- .vanced intermittently and to this end a deboard or some other stiff material.

vice as shown by way of example in Fig. 9

is by preference employed according to this invention. The sheet A as itcomes from the pileis fed by the feed roller B, first of all to the first stop I), in which position the first impression is produced. Immediately after this operation the sheet is fed successively against the stops D and D for enabling the next following impressions to be produced at different points on the sheet. To this end I provide on an axis 13 a rocking arm 1 1 with a second arm '16 on the same shaft 13 which by means of a link 17 is connected to a double armed lever 18. The latter carries a roller 19 which is in contact with the circumference of a cam disk 20. This cam disk is mounted on a shaft 21 rotating at half the speed of the main driving shaft. Several such cam disks are arranged on shaft 21, that is to say, as many as there are stops or stages through which the sheet is to be advanced. According to the number of cams, the lever arm '18 during one revolution of the shaft 21 will be rocked repeatedly and this movement is transmitted to the arm 16 and the shaft 13 and consequently to the roller 15 which every time is thus caused to descend into contact with the feed roller B and advance the sheet A, as will be readily understood.

In order to facilitate the preparation of the printing support and thereby to save as much time as possible, it is preferable to make use of a preparatory carrier, a construction of which isshown by way of example in Figs. 10 and 11. This carrier 22 which is to be interposed between the platen C and the printing die E consists of cca rl'ld- 1S carrier or a sheet stuck on to it is then usedto receive the first impression. It is then withdrawn from the machine and tissue paper or other known means -are used to cover up those parts of the impression which are blurred or not clear enough. This being done the carrier is reinserted in the machine with a covering sheet above it, which may, for instance, be glued with its forward edge to a plate 23 and new the printing may take place. The use of a special carrier of this kind enables the preparatory work to be carried out outside of the machine in the most precise and-quick manner.

hat I claim and desire to secure by Letters Patent is 1. In combination in a printing machine of the class described, a printing head, a plurality of printing forms located side by side and stationary thereon, means for alternately rendering ineffective the printing forms independently thereof, and means for brin ing said printing forms into printing operation at difi'erent points on the sheet to be printed during a single passage thereof through the machine.

2. In combination in a printing machine of the class described, a printing head, a plurality of printing forms thereon, a platen, masking means for alternately rendering ineffective the printing forms, and sheet feeding means for bringing said printingforms into printing operation at different points on the sheet to be printed during asingle passage thereof through the machine.

3. In combination in a printing machine of, the class described, a printing head, a pinrality of printing forms thereon, a platen, a withdrawable carrier thereon, and masking means operable alternately upon the printingv forms.

1. In combination in'a printing machine of the class described, a printing head, a plurality of printing forms thereon, a platen, an oscillatory frame between the head and 'the platen, and a masking sheet carried by said frame for allowing only one printing form to print at a time.

' 5. In combination in a print-ing machine of the class described, a printing head, a plurality of printing forms thereon, a platen, a frame between the head and the platen, a masking sheet, and elastic suspending means for suspending said sheet from said frame.

6. In combination in a printing machine of the class described, a printing head, a plurality of printing forms thereon, a platen, masking means for said forms, and means for controlling the advance movement of the sheets to be printed comprising a cam disk, a plurality of rocking arms actuated by said disk, and stops on said arms.

7. In combination in a printing machine of the class described, a printing head, a

In testimony whereof I have aflixed my signature, inpresence of two Witnesses.

'GEORG SPIESS.

Witnesses PAUL SHREGKENBERGER, RUDOLPH FRIOKE.

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