US1066645A - Printing-press. - Google Patents

Description

D. J. MORRISSEY.

PRINTING PRESS.

APPLICATION FILED SEPT. 11, 1911.

1,066,645. Patented July 8, 1913.

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fddziwi/zkrg g? fwe W D. J. MORRISSEY.

PRINTING PRESS.

APPLICATION rILnn SEPT. 11, 1911.

,1 ,O66,645. Patented July 8, 1913.

3 SHEETS-SHEET 2.

D. J. MORRISSEY.

PRINTING PRESS.

nrmou'mn nusn sun, 11, 1911.

1,066,645. Patented July s, 1913.

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UNETEE STATE PATENT oriuon BAVID J. MORRISSEY, OF ST. LOUPS, MISSOURI, ASSKGNOE 6F ONE-HALF TO EON F. GURBAN, OF ST. LOUIS, MISSOURI.

?RI N'.PING-PRESS.

Specification of Letters Patent.

Patented July 8, 1913.

T all whom it may concern Be it known that 1, DAVID J. Mon ussnv, a citizen of the United States, residing at St, Louis, Missouri, have invented a certain new n useful Imp eme in Printing- Presses, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it ap? pertains to make and use the same.

This invention relates to printing presses of the type which comprise an oscillating fly for receiving the printed sheets from the 7 the press at a comparatively slow speed.

E e wh n he pre s is um ing a a slow sp ed t e ee W l SQ adly that t is n t pr a le to use a mechanical feeding de i e feri eding the he t from he table and therefore has heretofore been necessa y e fe d he sh et man lly f m th table when thin sheets were being run through the press, Various attempts have been mad to rem y hi fe such, for example, as providing the press with a memher or members that pressed the heets downwardly onto the fly, ut su h d vices hav no pr e atisfa t y au e h y blurred or smeared the wet ink on the sheets.

One object of my invention is to provid a printing press which so designed that the sheets willnot curl up or wrinkle on h y Qr memher whi h tra sfers thesh e fromthe cylinder to the table on which the sheets are piled, thereby permitting the pr s t b r n at a high spe d;

Another object is to provide a printing pr ss. f the chara te e rred to i hi h the means that revents the sheets from wrinkling or our ing up Q1} 116 fly has no tendency to bl'un or smear the wet ink on the sheets.

Other ohiects and desirahle features of my nven on W 11 he heremafl r pointed Briefly stated, my invention consists in a printing press provided with means for directing jets of air or a current of air onto the sheets when they pass from the cylinder onto the fly so as to cause the sheets to lie flat upon the fly. Various means may be used for accomplishing this but I prefer to equip the press with a perforated'pipe arranged transversely of the press above the fly, the air being supplied to said pipe from any suitable source.

Figure 1 of the drawings is a vertical longitudinal sectional view of a printingpress constructed in accordance with my invention; Fig, 2 is an enlarged perspective view ofthe transversely arranged air-pipe from which the jets of air emerge and a portion of the fly which transfers the sheets from the cylinder to the table; Big, 3 is an enlarge'd elevations} view of said ai,-, ipe F g f is a an ver e sect onal v ew of seid" a r-pipe; Figa erti l ngitudinal sect onal view of a press constructed in ccordance with my in vention an Provided with a p mp for f r ing air o he ails.

p pe; and Fig- 6 is a view il us rat ng h a ery of p in ng pr e n be equippedwith air-pipes for directingjets of air onto the sheets as they pass from the cylinders of the presses onto the flies,

Referring to Fig. l of the drawings which illustrates one form of my invention, A desna e h cylinde of a Prin ing Press that pere es w th a r d o at n y' erri 3 hich is mo d e f rth, -y eans of a gear that i hifted into an u 9 n agem n h ra ks D an on he type-carrier. An oscillating fly F is emp y d for receiv ng h h t from e cylinder A an transferring them to a table G on h h the she -s a a r nged n a p le; sa d fly b ng ro ked r oscill ted b ck and forth as in ica ed y th errews in Fi by a ui hle m ans n t shown wh ch is QQWM Qd by reteting Shaft lthat extends 100 transversely of the press, he y herein sh wn consis s a 'a m ntali y o spa d ger as shawl; i F. 2, but t wil f course, he .Qb ieu that that pa cu a e strnction of the fly and the other parts of 105 the press are immaterial so far as m broad idea is concerned.

The means which I prefer to use for preventing th sheets from wrinkling or curling up nsis s of an a r-p p H ar ang d tran 1.1

versely of'the press above the cylinder A and adjacent the front end of the fly F when said fly is in receiving position, as

shown in Fig. 1, said air-pipe being provided with slots or orifices which are so arranged that currents or jets of air will be directed downwardly onto a sheet a; when it passes from the cylinder onto the fly and thus cause the sheet to lie flat upon the fly. The air-pipe H is preferably provided with two rows of orifices 2 and 3, the orifices 2 being arranged on the under side of the airpipe and the orifices 3 being arranged on the front side of the pipe H and inclined downwardly slightly, as shown in Fig. 4. By constructing the air-pipe in this manner I distribute the air uniformly over thesheet and cause the sheet to hug the fly closely, practically throughout the entire length and emerge from the orifices 2 acting to force -the sheet downwardly onto the fly as soon as the sheet passes onto the fly and the jets of air which shoot forwardly and. downwardly from the orifices 3 acting to hold the sheet down on the fly while the sheet is moving toward the inner end of the fly, as shown in Fig. 1.

A printing press of the construction above described can be run at a high speed even when thin sheets are being fed through the press because the air which emerges from the air-pipe H holds the sheets down upon the fly and prevents them from wrinkling or curling up in such a manner that they will fold under or wrinkle when they drop from the fly onto thepile 3/ on the table G. Therefore, it is possible to use a mechanical feeding device for feeding the sheets from the table G because all of the sheets in the pile lie perfectly flat. My invention not only makes it possible to run a printing press to its full capacity but it also tends to prevent the sheets in the pile y from sticking together, this being due to thefact that the air which is. discharged onto the sheet tends to cling to the sheet when the fly swings over and thus remains trapped in the form of a thin film on the under side of the sheet when it is deposited on the pile y.

The air-pipe H is preferably supported by arms 4 on a rock shaft 5 that extends transversely of the press but any other suitable means could be employed for supporting the air-pipe. In the form of my invention shown in Fig. 1 the air which is supplied to the air-pipe H is obtained from the pneumatic buffers which are employed for absorbing the shocks of the reciprocating type-carrier or bed B of the press. Said buffers are of well-known construction and consist of pistons 6 on the type-carrier B that pass into and out of'cylinders 7 and thus compress the air in said cylinders. Pipes 8 lead from the cylinders 7 to a storbreadth of the fly, the jets of air which,

with a valve 11 for controlling the supply ofv air to the air-pipe H. The air which is compressed and forced into the storage tank 9 at each cycle of operations of thepress is prevented from escaping from said tank by means of check-valves 12 in the pipes 8 and, if desired, an intermittently-operated valve 13 can be arranged in the pipe'lO so as to automatically cut off the flow of air from the air-pipe H after a sheet has passed from the cylinder A onto the fly andthus prevent the air from being wasted while the fly is transferring the sheet from the cylinder onto the table G. One convenient way of operating the valve 13 is to provide the shaft 1 with a cam 14 that cooperates with an arm 15 on the stem of said valve to move the valve in, one direction, the valve being moved in the opposite direction by means of a spring 16, as s own in Fig. 1.

Another way of supplying air to the airpgpe H is shown in Fig. 5 wherein a pum is employed for forcing air through the pipe 10, said pump being operated by a belt 17 that passes over a pulley 18 secured to one of the rotating shafts of the press as, for example, the shaft 19 which carries the gear C that moves the type-carrier or bed B of the press. In case it is desired to equip a battery of presses with air-pipes H a compressor Ran be used for supplying air to a header 20 fromwhichb ranches 21 lead to the air-pipes H of the different presses, as shown in Fig. 6. It is immaterial so far as my broad idea is concerned what particular means is employed for supplying air to the device which discharges the air onto the sheets, and the particular construction of the air-dischar ing device is also immaterial. Therefore, do not wish it to be understood that my invention is limited to the means I claim as new and desire to secure by Letters Patent is:

A printing presscomprising a cylinder, a reciprocating type-carrier or bed that cooperates with said 0 linder, an approximately horizontally disposed oscillating fly for receiving the sheets from the cylinder and transferring them to the table of the press, pneumatic buffers for absorbing the shocks of said typecarrier, a device for directing air downwardly onto the sheets which lie upon the fly so as to force them against the fly, a storage tank for supplying air to said device, a connection between said In testimony whereof I hereunto afiix my storage tank and said pneumatic hutfers signature in the presence of two Witnesses, whereby the air which is compressed 1n said this seventh day of September 1911.

bufl'ers is supplied to said tank, and an in- DAVID J. MORRISSEY. 5 termittently operated valve for controlling Witnesses:

the flow of air from said storage tank to WELLS L. CHURCH,

said air-supplying device. GEORGE BAKEWELL.

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