US1602157A - Ink drier for printing presses - Google Patents

Description

w. A. HORNBECK INK DRIER FOR. PRINTING PRESSES Oct. 5 1926.

Filed May 12, 1925 2 Sheets-Sheet 1.

. WVENTZZQ MLTEI? ,4. Ham/BECK Get. 5 19216.

W. A. HORNBECK INK DRIER FOR-PRINTING PRESSES 2 Sheets-Sheet 2 Filed May 12. 1925 JNVENTUH [444.4 75/? A. HflH/VBEC/f Patented Get. 5, 19.226,

VVALTER A. HOENBECK, OF IPC'LFJD BLUFF, CALIFORNIA.

INK nninn' non rnrn'rrne rnr ssns.

Application flied May 12, 1925.- Serial No. 29,786.

without the interposition of blank sheets,

At the present time it is customary where hand feed is used to introduce a blotter be tween each two printed sheets, which blotters have to be removed at a later time at considerable expense for labor. My attachment does away with this method of slipsheeting, and allows the printed sheets to be stacked immediately. 1 I g It is particularlyproposed in the present invention to provide a conveyor in operative proximity to the delivery of the printing device'so that where the machine is handoperated the sheets be p aced on this conveyor by the operator, the sheets being automatically removed bythe conveyor so as to clear a space for the next sheet.

It is further proposed to provide heating veyor for drying purposes, the heating elements being preferably arranged insuch a manner that they heat the printed sheets from the top as well as from the bottom. It

the conveyor, a suitable means for stacking the. printed sheets, the said means being con structed in such a manner that sliding engagement between any two sheets isavoided, and so that each. sheet falls vertically upon the stack of sheets previously formed without rubbing on the said sheet, whichimight cause the still comparatively fresh ink to blur. 4A)

tachment will appear as the specification proceeds. V

Tliepreferred form of my invention is illustrated in the accompanying drawings, in which: V

Figure 1 shows a plan view of my attachment as secured to the delivery. table of a hand fed printing press, v

Figure 2 a front view of the device shown in Figure 1; i e V Figure 3 an end view of the same; v 1 Figure 1 an end View of a well: known type of printing press having my device attached thereto; and

elements in operative proximity to the conisfurtheiproposed to provide, at the end of Further objects and advantages of my at- Figure 5' a detail View of a pinion driving a shaft in one direction only.

' lVhile' I have shown only the preferred form of the invention I wish to have it understood that various changes or modifica-' tions may be made within the scope of the claim hereto attached without departing;

from the spirit of the invention.

My device consists principally of arc 0n veyor 1, a stacking-device 2, andmeans for heatingprint-ed sheets while they'are passed on theconveyor to the stacking device.

In Figure4 is shown the general arrangementveof" a printing press consisting in. its

principal features of the bed 3, the platen 4 mounted for operative engagement with the same, the ink fountain 6, the distributing rollers 7 and operating mechanism for the same allowing the rollers to descend from the a r-roman and to slide over the bed containing the type, and a delivery table 8, which in the hand fed type of press is placed in front of the platen within convenient reach of the operator so that the latter may I place sheets withdrawn from the platen on the said table. L'a terally of the table'fa wheel '9 is provided which in the general mechanism of the machine operates the distributing rollers, and which for the purposes of my invention is important, in so far as it is in a convenient. place to drive my mechanism, to'be described hereinafter.

As a supporting structure for my conveyor" I provide a rectangular frame 11 adapted to be secured in any suitable man ner, as'for instanceby .the screws 12', ontop of the delivery table. This frame supports- 'in spaced relation'two'rollers 18, over which endless" belts 14:. are passed in spaced rela- J tion, the surface of these belts being preferably roughened or provided with bristles so that a sheet of paper placed on the samewill readily follow the movement thereof."

Rotary motion is imparted to one of the i said rollers by means o'f-the pin-ion 16 disposed attlie end thereof and meshing with a gearwheel 17 placed below the'same, which latter: is' revolved through a bevel gear. 18

disposed on a 's haft 19 having a pulley 21 secured thereon. The latter pulley-is connecteddto the wheel 9 previously referred to 1 by meansof the belt 22;

Above the conveyorbelts there is supported antelectric heating element 23 which -is spaced from the sheet sufficiently far to "contact therewith, whereby the sheet is heated from below for effecting drying of the print thereon. A third roller 26 is provided in advance of the delivery end of the conveyor and in parallel relation to the two rollers 13, the third roller being sufficiently close to the delivery end to cause the advancing sheet to support itself by means of its own stiffness until its front edge reaches the third roller and receives additional support from the same. The third rollerreceives rotary motion through a belt 27 connecting the pulley 28 fixed to the roller 26 with a pullev 29 formed integral'with the pinion 16. The dimensions of the pulleys 28 and 29 are preferably such that the roller 26 revolves somewhat faster than the rollers 13.

From the roller 26 the advancing sheet is delivered on two fiat frames 31 disposed at the ends of two parallel shafts or handles 32, which latter are supported in the front member 33 of the frame and in suitable brackets 34. The two frames normtlly lie in the same horizontal plane, so that a sheet may be delivered on them from the conveyor and from the roller 26, the proportions and distances being such that the sheet substantially reaches from center to center of the frames while the central portion of the sheet is unsupported.

Means are provided in connection with these frames for dropping each sheet sep a-- rately through the spacebetween the frames. This is done by causing both of the frames to revolve intermittently through half a circle and in opposite directions in such a. man ner that the-two confronting edges of the two frames drop so that the paper sup- 7 ported onthe confronting sides of the frame is also dropped, while at the end of the in-' termittent motion the two frames again lie in a horizontal plane with the former under side on top.

This result is brought about by means of a mechanism operated by the wheel 36'supported on the shaft 37 having its bearing in a transverse member 38, the wheel 36 receiving rotary motion through an idler 39 from the gear wheel 4l at the end'of the shaft 19. Reciprocating motion is transmitted from the wheel 36 to two rack bars 42 and 43 mounted for engagement with two pinions 44 arranged on the shafts 32' by means of two links 46 pivoted to two pins of the revolving motion of the pins 4'? and 48, and the racks themselves ride tl .ou slots 53 on pins 54.

it will be noted that revolving motion of the wheel 36 causes the two raclrs to reciprocate in opposite directions, that is, as viewed in Figure 3, on one-half revolution of the wheel 36, both racks will be drawn in-- wardly, while on the next half of the revolution both of them will be pushed outwardly. Since for such successful operation of the two frames 31 it is necessary that each be revolved in the same direction instead of being rocked back and forth, it is necessary that the outward stroke of the two racks be rendered inoperative, which can be easily accomplished by causing the pinions 44 to be loose on the shafts 32 and allowing the shafts to be driven one way only by means ofpawls 56 on the pinion engaging with ratchet teeth 57 on the shaft, as illustrated in Figure 5.

The operation of the device will be readily understood from the foregoing description. The individual sheets of papers are placed bythe operator on the conveyor 1 and are carried individually forward on the coin veyor belts, passing first underneath the heater 23 and then above the heater 24 until they reach the roller 26 which advances each sheet further and delivers the same on the two frames 31, which latter are usually made of very light construction. During this process and in timed relation therewith, the two frames are intermittently turned through a one-half revolution so that they drop their sheets successively downwardly to form a stack underneath the two frames.

It will be readily seen that during the whole process if the sheet is placed with the wet print facing upwardly, the print itself does not come in contact with anything throughout the whole operation until the next sheet is placed on top of the same, and in making this contact the second sheet does not rub on the first sheet in any manner, but only lightly drops on the same from the top.

The advantages of my attachment should be understood. i Vhere my attachment is .sed, there 1s no necessity for the common practice of shp-sheetmg with all its waste in material and labor, and my drying process is carried out so thoroughly that immediately after one-side of the sheet of a certain job is printed the operator may proceed at once With the printing of the other side. My attachment offers particular advantages when used in connection with an automatic feeder, since the rapidity of progress in the latter makes it impossible to use the old method of slip-sheeting. A necessary consequence of this condition thus far was that really first-class paper could not be used in connection with an automatic feeder, since the ink would not dry sufficiently fast. here my mechanism is used, the device can be made to operate with the same rapidity with which the sheets are delivered from the press so that theme of my attachment makes possible the use of any grade of paper'in connection with an. automatic feeder.

I claim: I A sheet receiving and delivering device comprising two revolvably mounted parallel shafts having fiat supporting elements secured to one end thereof, pinions arranged on the shafts so as to transmit motion thereto in one direction, racks supported for engagement with the pinions, a revolving wheel having diametrically opposed pins projecting therefrom and means connecting the two pins to the two racks for reciprocating the latter in opposite directions.

WALTER HORNBECK.

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