Oct. 1, 194,6. ' . N. s. WELK ' , 2,408,498 v APPARATUS FOR COOLING AND HARDENING WAX CARBON COATINGS Filed April 24,'_1944 2_ Sheets-Sheet v1 7 1. 21 ATTORN EY. Oct. 1, 1946. 2,408,498 , N. S. WELK APPARATUS FOR_COOLING AND HARDENING WAX CARBON COATINGS Filed April’ 24, 1944 2‘ Sh'eets-Sheet 2 %.UM, mm INVENTOR. @M a. ATTORNEY. , Patented Oct. 1, 1946 K‘ UNITED 2,408,498 . " _ ING. WAX CARBON ‘COATINGS I I Nelson S‘lWelk, ' Athens, Ohio; ‘assignor to The McBee Company, Athens,’ Qhi'oi a corporation ‘ Application April 24, 1944,"SerialNo. 532,524 1 Claim. (01. 101-416). 1 The transfer roller'IS is arranged closely adja~ This invention relates to presses for the appli cation of wax‘ carbon to ‘sheets of’ paper. Such cent the stripper bar I2 so as to receive the sheets from. the ?ngers I4. A suitable bridge“ I’! vsecured a press is : disclosed in Letters Patent of‘ the United States No. 1,860;95'7. , In general, such a at its ends to the side frames is arranged between the transfer roller I6 and the coolingcylinder I5 so as to guide the ‘paper from the transfer press is widely known in the art as a “Kelly” type press and is especially equipped as shown in the roller I6 to the cooling cylinder I5. aforesaid'patent for applying wax carbon spots to wax sheets. For the reason that the construc tionand operation of such a press is well knownv it is not illustrated and described herein. g . ,; ' _ At'the rear side .of the cooling cylinder I5 is a second stripper bar I8 carrying stripper members 10 I9 so formed as to strip the sheets from the cool It is the ‘principal object of 'my present inven tionto; provide such presses with an‘ improved means :to vcool the wax carbon- coating of the paper sheets-as they‘ are delivered from the print. ingv cylinder in order to, harden the carbon and 15 } ing cylinder I5 and direct them onto the top ?ightv of a conveyer 20. This conveyer as illus trated in- the drawings, is composed of .a pluralityv of: narrow fabric belts spaced apart as shown. These belts are disposed. over a roller pulley 2| journaled in the sidelframes I0 as illustrated. give-it ‘gloss prior to the ‘?nal delivery of the Disposed over the conveyer 20 is 'a roller pulley 22 sheets from the press. journaled. in the side frames I0; A plurality‘ of Qne form which they invention may assume is spaced ; string belts 23v arerarranged over. this. exempli?ed in the following description and il roller in parallelism with the top ?ight of the 20 lustrated by way ofexample inthe accompany conveyer ~20. . The bottom ?ights of , the string ing-cdrawings; in which: ~ ‘ belts 23 are spaced'slightly. above the top ?ight ~ Figrlv is a plan view of the apparatus embody ing- the preferred form of my invention, of the conveyer 20 and travel in the same direc-, > tion; at the same-speed so. that they will act to Fig.2 is a side view ofthe same. , hold the paper sheets ?atwise =0n the conveyer 20 Fig. 3 is a longitudinallsectionr taken on line 25 for delivery at the ‘end of; the conveyer for stack 3-7-3 of. Fig. 1. ~ ' 111g_ Fig. 4 is a longitudinalsection taken on line. Referring more particularly to the accompany ing-drawings, lit-indicates a pair of side frames formed as a rigid part of the printing press frame and located at the delivery end of the press. The main frame of the press, of course, carries in the . » y 7. . . so that sheets directed from the printing cylin by the transfer roller IE to the cooling cylinder I5 and thence to the .top ?ight of the conveyer 20 for delivery from the machine. It is obvious, of course, that the string belt roller pulley 22 revolves in a direction opposite from the roller 2| at the same peripheral the side frames I0 is a stripper bar‘ I2 carrying stripper ?ngers I4 so positioned that they will der I I and direct them substantially horizontally a ' der II will be transferred Extending laterally between rearwardly between the frames I0. » directionjat the proper relative peripheral speeds‘ dot and dash lines) which operates in the con strip the printed sheets from the printing cylin-r > inder.‘ II, the transfer roller I5, the cooling cylin der I5; wthe conveyer roller~_2.|; revolve in the same I'll usual manner aprinting cylinder II (shown in ventional fashion. . - 1It>should be pointed'out that the printing cyl it) _ In the present instance the printing is the ap plication of heated wax carbon to one side of a speed so that the lower ?ight of the string belts 23 and the upper ?ight of the conveyer .20 will travel in the same direction at the same rate of speed. To drive the rollers, as just described, a drive (not shown) is transmitted from the driving sheets are delivered from the printing cylinder I I _ 45 mechanism of the press proper to the shaft of the transfer roller IS. A sprocket and chain drive the wax carbon coating will be uppermost so that sheet of paper run through the press. When the the under or uncoated side of the sheet will be engaged by the stripper ?ngers I4. Arranged rearwardly of the printing cylinder at a spaced distance therefrom is a cooling cylin der I5 having its ends suitably journaled in the side frames ID. To direct the printed sheets over this cooling cylinder I5, a transfer roller I6 and a guide roller I6a are provided intermediate the printing cylinder II and the cooling cylinder I5. 55 .24 transmits a drive from the shaft of the trans fer roller I6 to the shaft of the conveyer roller pulley 2|. Spur gears 25 and 25a on the shaft of the roller I6 and'the shaft of the cooling cyl inder I5 effects driving of the latter. Spur gears 26 and 26a effect a drive between the roller pul leys 2| and 22. The shaft of the guide roller Ilia is ?tted with a sprocket l?b which engages the 2,408,498 3 4 chain of the drive 24 to effect driving of that roller. To cool or chill the cooling cylinder IS, the} latter is hollow so thata cooling ?uid or liquid may be circulated therethrough to cool or chill its cylindrical wall. For this purpose the end shafts of the cooling cylinder 16 are hollow and the sheets pass the nozzles 29 they will be stripped from the cooling cylinder l5 by the stripper mem bers l9 and will be directed flatwise onto the up per ?ight of the conveyer 20. They will be held in a ?at condition by the lower ?ight of the string belts 23 superposed over the conveyer 20. As the sheets are delivered by the ‘conveyer 20 they suitably connected at their outer ends with ?uid are, of course, stacked in the usual fashion and or liquid conducting connections so that at all times during the operation of the cylinder [6, a, 10 this can be accomplished without smearing or otherwise disturbing the carbon due to the fact cooling ?uid or liquid may be circulated there 'that it has been cooled and hardened before de through. " livery as previously described, In order to effect a rapid cooling of the carbon 0n‘ sheets passing over the roller I5, I have pro vided means for causing the sheets to be placed ‘From the foregoing it is obvious that I have provided a very simple but effective apparatus for cooling and hardening the wax carbon coating of in ?rm contact with the exterior of the peripheral ‘ sheets as the latter are delivered from the wall of the cylinder l5 during the passage of the‘ Y‘ paper printing cylinder of a press. It should be pointed sheets thereover. This means comprises a pair out that by so hardening the carbon it is given of air-conducting tubes2'l arranged parallel to glossy surface which enhances its appearance. the cylinder I 5 and ?xed at their ends to the 20 a While I have shown the preferred form of my side frames l0. One end of the tubes are con invention, it is to be understood that various nected to ?exible conduits 28 communicating changes may be made therein by those skilled in‘ With a source of air under pressure. The tubes the art Without departing from the spirit of the‘ 21 are, of course, stationarily ?xed in the frame invention as de?ned in the appended claim. ‘ as illustrated. ‘ Having thus described my invention, what I Each tube 21 is formed with a row ‘of spaced claim ‘and desire to secure by Letters Patent is: nozzles 29 directed toward the peripheral sur In combination with a printing'press for ‘print face of the cylinder l-5 at the upper side thereof. ing wax carbon on sheets of'paper, said press When air under pressure is directed to the tubes including a printing cylinder, a cooling cylinder 21 a multiplicity of ?ne jets or streams of air 30 arranged at a spaced distance from the print will emanate from the nozzles 29 and cause the ing cylinder with its axis parallel thereto and sheet directed between the nozzles and the cyl revolving at substantially the same peripheral inder I 5 to be pressed in ?rm contact with the speed, transfer means between the printing cyl cylinder. The combined effect of the air nozzles and‘ the‘ cooling action of the cylinder 15 is 'su?‘i- ‘> inder and the cooling cylinder for-transferring the sheets from the printing cylinder over the cient to cause rapid cooling and hardening of cooling cylinder, a plurality of nozzles arranged the carbon so that it will discharge from the longitudinally over the cooling cylinder to direct cylinder 15 hardened and with a glossy surface air jets towards the upper surface thereof where and may be promptly delivered from the machine and stacked. - ‘ ‘ ~ ' ' In operation of my apparatus, sheets printed in 40 the “Kelly” press and delivered by the printing cylinder H may be stripped therefrom by the stripper ?ngers l4 and transferred by the trans fer roller l6 and ‘the bridge I‘! to the upper sur face of the cooling cylinder I 5.‘ As the'sheets by sheets directed to the cooling cylinder will pass between said jets and said cooling cylinder, a conveyer for receiving sheets from the cooling cylinder and discharging them from the machine, and transfer means between said conveyer and _ said cooling cylinder for' stripping the sheets ‘ from the cooling cylinder and directing them to the conveyer, and string belts overlying the con vpass over this cylinder they will be pressed in veyer with their bottom ?ights spaced over the close ‘contact therewith by the action ofvthe air jets emanating from the nozzles 29 of the tubes‘ _ conveyer to maintain the sheets ?atwise on the conveyer. 217, This cooling action will result in hardening “ and cooling the carbon on the sheets. After NELSON s. WELK.