US1783345A - Stereotype-plate-cooling apparatus - Google Patents

Description

Dec. 2, 1930. o. c. RoEsEN STEREOTYPE PLATE COOLING APPARATUS Filed March 5, 1927 2 Sheets-Sheet l 7 /////////J//J/ f Dec. 2, 1930. o. c. RoEsEN.

STEREOTYPE PLATE COOLING'APPARATUS Filed March 5, 1927 2 Sheets-Sheet 'zo l by 'a separate means;

.. osoAR CHARLES ROESEN,

ing 'drawings in which Patented Dec. 2, 1930 l UN`Il'1V-fll`1r fSTA'rES PATLENT` o1-Ficfa or BROOKLYN, iirEWYoRK, As'sIGNoR To Woon Nnwsranni?.V

MACHINERY conroneriomoir Naw YORK, N. Y., A conronATIoN F viRGrINIAV sTEREomYPE-rLnrE-oooiirne APPARATUS- AIipii'ciio-n i'iea Maren 5,

\ This inventionrelates tok the cooling of cast stereotype printing plates after they aire Cast. Y Y

' The principal object of :the invention is to utilize lthe period during which the plates ltravel from thefcastiiig room to the press room, orth'eir'equivalents, for'c'ooling the plates landYto provide practicaland simple mechanism for that purpose.L

"Other oh'ectsand advantagesk of the invention willappeai Vhereinafter.V VReference is to" be had to the accompany- 1 is a side viewfpartlyin section-of one enibodir'ne'n't of this invention;

F ig. 2 is a similar View shovviiigzanother Wayof cooling the plate in accordance with this invention; l Y

Fig. 3 is'arsi'mil'a'r view of a forni of the invention in which the platesV areimlnersed Fig.` 4 is a similar view of a fourth constructionffor thispurpose5fand 5' is an `end viev7 of'thefniechanism showninFig. Y" 'V When a newly cast: plate is delivered from the lcastinginachine, `it is toofhot to;l be handled by the` operator unless 'sonieforni 'of cooling, is provided; `Several methods of oolingshave been" devised' for this purpose, butthe presentinvention relatesto the Vcool'- ing fof the plate whilefittravels from the casting room to the press yrooin, soth'at no time really'is lost bythe cooling process, the

cooling all taking effect Vwhile the'plate is travelling-froth 4ione position to the other,

where ithasto Atravel anyway.

`One of the simplest 'forms 'of :cooling is shown inFig. l. In this figure'thepla'te P is taken upbyan'endless chainconveyor'l() passing around sprocket ,wheels` 11"'an'd driven by a motor 12. AThis conveyor is pro*- vided withlugs 13 at intervals-which, upon coming around intol contact'with the plate located over the'conveyor,vwillwengage the. rear edge Vand. inove the rplate"along a pair` `of angle iron guides or "tracks/l. These. guides or tracks 14 extend Vfr orna.point adjacent' theA 'cafstingfapparatus iiijtheeasting ''Y Mid itliepl; are? dllvd ''l l'l- 1927. seriai No. 173,159.

usedv ordinarily for Vtakingthe plates from i the casting 'rooin to the press roonfror at least frorn one placeto another. This con: veyor valso1takes up the plate shown at the left in Figvlin the casting room,.the plate being delivered to it, preferably by the casting machine, inf p'ositionto be engaged by the lugs 131.- The plate slides alongA with its edges on the two tracks 14 toja position indicated at the 'rightlwhere itentersv the press rooin and istaken oifthe conveyor vby hand and utilized in the ordinary way.V The conveyor is endless, passing :back to: the starting position 'in the usualwayr 1 For the purpose of' utilizing the time re- 'quired for takingthe plate freni the posi" tion 'shown'at the left in Fig. llto thatshown at'the right, I einplfoy a tank 15 filled with water, preferably. Instead of' having l thev tracks 14 straight from one position to the other, Iv deflect the tracks down into .the tank so `that the pla-te is forced to travel `down through the water for cooling it and npagain tothe proper level for delivery. The chains ofcourse pass through vthe same curved path. In this vway-th`ep'late's arel cooled while they travel from the casting ro'oin to' the press room and notinie'is wasted in special cooling It is not necessary to irnnierse'the plates in water and inFig. -2 I' have shown a `modification vof the forinshown in Fig- 1 ini-Which. the sarneconveyor and tracksare used except that they are 'not `deflected from the horizontalpath." Insteadof going through a tank "andbeing `:ilr'iinersed they I plates are? lpassed over a saddle '20 which 'is supplied'with 'coolingvwatr through-\'a"pi1:ie21. f The saddle is provided with perforations22 through which the water is discharged on the surfaceofthe saddle te come ntecentact with the inside of the plate. 'The' saddle is provided with grooves 23 `for receiving it and draining it oli' so aS-to Cool the platelon the interior. In

this case the plate passes along a. straight path, preferably. The saddle may be of any desired length to secure the necessary cooling between one end of the conveyor and the other.

Another form of the invention is shown in Fig. 3. Tn this case the plate is taken along a straight track 24 formed of angle irons or the like, by a chain conveyor 25 which has only al short travel. The conveyor takes the plate from the point at which it is deposited by the casting machine and, by means of its lugs 13, moves it on a cradle 26 as indicated in the drawing. This cradle at this time is located at the level of the tracks 24 and in line with them. The plate is simply pushed on it by the action of the conveyor.

This cradle is pivotally hung from one pair of arms of a reel 27 which is mounted on a shaft 28. On the shaft is a worm wheel 29 operated by a worin 30 on the shaft of a motor 31.

The electrical connections are not shown in full but when the plate is moved into the position shown on the cradle 26 at the left; the lug 13, coming around underneath the end ofthe conveyor, closes a Contact 32. This Contact is located in the motor circuit and closes that so as to start the motor. It will be seen that th-e conveyor 25 travels continuously through its motor 12. Now the reel composed of the arms 27 starts to rotate in the direction indicated by the arrow and moves around until the plate just deposited in the cradle reaches the position at the bottom. This reel is located over a. tank 15 such as shownin Fig. 1 and the rotation of the reel immerses the plate. At this point a. lug 33 on another arm of the reel comes int-o contact with a limit switch 34 which breaks the circuit and stops the motor and therefore the reel in that position.

By this time another plate comes along the conveyor 25 and is moved on' to the next cradle 26 and the contact 32 is again closed which starts the motor and the reel again. The reel rotates through a third of a revolutionV in the form shown and then stops and the plate we have been describing comes up to the position indicated at the right hand side of the figure, where it hangs horizontally as shown. Now when the reel starts the next time, an arm V35 on the cradle comes into contact with a fixed stop 36 and during the first part of this third of a rotation the cradle is tilted to the dotted line position. The plate then slides ydown ther cradle by. gravity on a series "of rolls 37 vwhich are arranged in in-` clined position and finally on va track 38 which `is like the track 24. The two lower edges of the plate rest onthe two angle irons, forming the tra-ck. Here the plate is picked up by another'conveyor 39 and carried therefrom to the press room. Y

It will be seen that'the revolving motion of the wheel is intermittent and is started and stopped automatically by the actio-n of the inrcoming plate and the reel itself through the two switches 32 and 34. In this way all the plates are cooled the same length of time and come into the press room in substantially uniform condition and ready for the press.

The same invention can be carried out in other ways, one of which I have illustrated in Figs. 4 and 5. In this case the plate P is brought down an incline by the action of a conveyor 40. It is deposited on an inclined platform 41 mounted on the top of a stationary disc 42, which disc also is inclined to give the platform its proper inclination so that the plate will slide down it by the action of gravity. This disc 42 has an opening 43 large enough to allow the plate to pass through it, this opening being slightly off center. The end of the plate enters the opening and comes up behind the wall of a drum 44. This drum is mounted o-n a shaft 45 arranged atfright angles to the plane of the disc 42 and therefore on an inclination. It is operated continuously by a motor 4G through worm gearing 47. This drum is provided with openings 48, shown as four in number. rThey are at the same distance from the center of the shaft 45 as the opening 43 and have the same shape. A

lVhen the drum comes around in its rotation so that an opening 48 registers with the opening 43, the plate will slide down into this opening 48 and come up against a disc 49 which is like the disc 42. It is located parallel with it and is provided with one opening 50 which is centrally aligned and therefore out of alignment with the opening 43. Therefore the plate when it comes down through the opening 48 engages the disc 49 and cannot pass out .through the opening 50, but is forced to rotate around the drum 44. Then it passes into a tank 51 and as the parts do not fit closely, it immerses the plate in water in the tank for a definite period of time and then brings the plate up. When it reaches the top, the plate will eventually register with the opening 50 and pass out through the same o-n an inclined shelf 52 down on an inclined series of rollers 53 to a conveyor 54 to be delivered wherever desired. The openings 43 and 50 are larger than the plate to allow the drum to move through a part of a revolution without rubbing the plate against the edges of these openings. The drum of course rotates slowly.

n all forms ofthe -invention shown, the same advantages are secured4 as expressed above, and the amount of cooling is uniform for the dierent plates so that they all reach the press room in the same condition of coolness and ready for use.

Although I have illustrated and described onlyfour forms of the invention I am aware of the fact that other modifications .can be made therein by any person skilled in the art without departing from the scope of the invention as expressed in the claims.

Therefore, I do not wish to be limited to all the details of construction-herein shown and described` but what I` do claim is 1. In a'device of the character described, the combination with a conveyor and tracks for supporting the straight edges of stereotype printing plates, Vthe conveyor being ar. ranged to move the plates along the tracks, of means located adjacent to the tracks for subjecting the plates to the action of a cooling medium as they pass along under the iniluence of the conveyor; i

2. In a plate cooling machine, the com-V y bination withl two conveyors separated from each other, the first conveyor beingadapted to take a plate from the casting room vand move it along a certain distance, a plate immersing vmechanism in position to receive a plate from the irst conveyor and move it down into a tank of water to cool it and up `again to deliver it, the second conveyor being located at the other end of the machine in position to receive the plate from the immersing device and deliver it.

'8. In a plate cooling machine, the combination with a feeding conveyor and adelivery conveyor for the plates, of a rotary member located between them and adapted to receive the plates, av cooling tank below said member into which the plates 'are passed by its rotation and out oit which they are moved by therotary member .on the opposite side of said tank into positionto be deposited on the delivery conveyor. n

l. In a plate cooling machine, the-combination with a reel, of a series oit' cradles pivotally mounted on the arms of the reel and hanging down in a horizontal position to receive a plate, means for rotating the reel intermittently so as to immerse a plate located on one Vof the cradles in a tank of water below and to move another cradle into receiving position and then stop, and means for automatically starting and stopping the reel in proper position forvreceiving and delivering the plates.

5. In a plate cooling device, the combination with a tank having'cooling Water therein, of a reel located over the tank and having arms projecting therefrom and cradles connected with said arms, of a motor for rotating the reel having electrical connections by which, when the reel rotates to a position in which one cradle is in position to receive a plate, the motor and reel will be stopped and, when the reel is started, it will be turned to bring'that plate down into the tank for cooling it.

6. VIn a plate cooling device, the combina- Y tion with av tank having cooling water therein, of a reel located over the tank, a motor for rotating the reel having circuits for controlling it, said reel having a series of pivotally depending cradles for receiving and holding the plates to be cooled, the reel having means for stopping the motor when one of said cradles reaches receiving position, means for delivering a plate to a cradle in receiving position, and means on the deliver-V ing means for starting theV motor when the plate is so delivered, whereby the plate will be lowered down into the tank to cool it.

' 7 In a plate cooling'device, the combination With a cooling tank, of a reel located above it and having a series of cradles for receiving' the plates, means for delivering a Vplate to a cradle in receiving position, said means having means for starting the motor when the'plate is so delivered, whereby the reel will rotate and immerse the plate in the tank, means on the reel for stopping the motor when another cradle on the reel reaches the position to receive a plate, and means whereby when each cradle reaches delivery position it will be inclined to deliver the plate Y out of the cradle by gravity.

8. In a plate cooling device, thecombination with a cooling tank, of a reel located above it and having a series'of cradles for receiving the plates, means for delivering a plate to a cradle in receiving position, whereby the reel willv rotate and immerse the plate in the tank, and means whereby when eachcradle reaches delivery position it will be inclined vto deliver the plate out of the cradle by gravity.

In testimony whereof I have hereunto af- Yfixed my signature.

OSCAR CHARLES ROESEN.

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