US1687414A - Automatic multiple plate-casting machine - Google Patents

Description

Oct. 9, 1928.

H. A. W. WOOD AUTOMATIC MULTIPLE PLATE CASTING MACHINE Original Filed Nov. 9. 1922 l0 Sheets-Sheet l OC.` 9, H. A. w, WOOD AUTOMATIC MULTIPLE PLATE CASTING MACHINE original Filed Nov. 9. 1922 10 Sheets-Sheet 2 NNN @N a G NNN 4@ Oct. 9, 1928.

H. A. W, WOOD AUTOMATIC MULTIPLE PLATE CASTING MACHINE Original Filed NOV. 9. 1922 10 SheeCS-Sheeb I Il 'dl-11.

10 Sheets-Sheet 4 H. A. w. woon AUTOMATIC MULTIPLE 'PLATE cAsr'N'a MACHINE Original Filed NOV. 9. 1922 QN. WN Nu@ IUTO|MM G bm. QNI u fr .NQ Mm. z f I mw -L mm Nm ,E wma ..-W N5 J www Om. N .Wm e NN n wa@ w QN ,|1 l l\\ M Nm. Ilw a @l m b@ Q l H L? @w [1F A /w m\ Oct. 9, 192s.

Oct. 9, 1928.

H. A. W. WOOD AUTOMATIC MULTIPLE PLATE CASTING MACHINE original Filed N`ov. 9. 1922 lO Sheets-Sheet 5 mm QE @NN @NN .ANN

EN EN H.- A. W. WOOD AUTOMATIC MULTIPLE PLATE CASTING MACHINE Oct. 9, 1928.

10 Sheets-Sheet 6 Oct. 9, 1928..

H. A. W, WOOD AUTOMATIC MULTIPLE PLATE CASTING MACHINE Original Filed NOV. 9. 1922 lO Sheets-$116.91', '7

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H. A. W. WOOD AUTOMATIC MULTIPLE PLATE CASTING MACHINE Nov. 9. 1922 10 Sheets-Sheet 9 Original Fil l f D9- www.

Oct. 9, 1928.

` H. A. W. WOOD AUTOMATIC MULTIPLE PLATE CASTING MACHINE 1Q sheets-sheet 1o Original Filed Nov. 9. 1922 Patented Oct. 9, 1928. Y*

HENRY A. WISE woon', OE NEW YORK, N. Y., AssIeNOE.A To woon NEWSPAPER MA- CHINEEY CORPORATION, OF NEW YORK, N. Y.,;A CORPORATION OE VIRGINIA.

AUTOMATIC MULTIPLE PLATE-CASTING MACHINE.

Application filed Nevembere, i922, serial No. 593,745. Renewed February 18, 192s.

This invention relates to a machine for caste ing stereotype printing plates of thecurved variety. I have illustrated this invention in a form in which it embodies certain features shown, described-and claimed in my co-pending application for patent, Serial Nos. 568,-

137 and 574,377, filed respectively on the 14th day' of June and the 12th day of July, 1922.

rilhe principal objects of the present invention are to apply to the latter of said two devices means for continuously operating the lmechanism for controlling the core and keeping it under automatic movement; 15o pro-l vide means for automatically closing the mold, pumping the metal into it, causing the necessary pauses for the casting and cooling and thehalf rotation for delivery, Opening the mold and sawing thezends of the casting to. Vprovide a back member in two parts7 each carrying a matrix and capable of being` rotatedeither separately or togethensaid backs being capablev of carrying a .single double truck matriX and when. so acting capable of casting double width plate; to provideautomatic mechanism for Vturning the two backs separately or together to bring them into casting position, holding the same stationary during the casting operation and moving them'bacl; for the stripping of the matrix or matrices and the delivery of the resulting plate or plates; to provide means by which the machine can be timed to 'maintain a given rate of production so that no manual work need be done in connection with its operation except to remove the cast plates and risers when theyare automatically delivered and to replace' old matrices with vnew oneswhenever needed; also to provide automatic means wherel y the pump will be operated without the necessity of supervision but under such control that the man can arrest the operation of the pump by hand operated'means whenever desirable; to provide means for quadrupling the output of the previous machines of this general type withoutfincreasing their siiace or materially increasing rthe labor required to operate them; and to combine the features shown in my above mentioned applications and render thev several operations automatic. e

` The invention also involves improvements in the features of construction andin the com# binations of parts affecting 'the above results.

drawings, in which.

.for rotatingthe back;

Fig. 9 is a'section thereof on the line 9 -9 Fig. 10 is a section of the mold o n the line Fig. 6 is a sectional view on the'line 6&6

of Fig. 5;

F 7 is a side view ofthe machine;Vv Fig 8 1s a plan of details of the mechanismV Fig. 11 1s an enlarged sectional yview showing water connections;

Figj12 is a section -on the line 12412 of Fig. 11;

Fig. 13 is a section onfthe line 2131-13 :of Fig. 1

Figs. 14e and 15far'e plans of two mechanis'msy for operating clutches', thearrows '14 and 15 in 13 indicating their respective locations;

Fig.l 1G is a sectiononthe line 16-'16 of Fig. 17 is a. section on the line 17-17 of Fir. 16;

Fig 18 is a section showing filling piece when the upper back is used only;

Fig. 19 is a section showing filling piece when only one matrixis used inV both backs for one large plate;y i

Fig. 20 is afplanof the several cams;

Figs; 21 is a'section on line 21%21'Fig. 3 showing the Way'tlie cam shaft and npright .shaft for operating the core are connected to the main driving shaft ;A Y

UNITED STATES PATENT OFFICE. l

Fig. 22 is anA elevation shov'vingn the operation of'saw cam; i

Fig. :'23 is plan thereof ns'indicated by the arrow Q3 in Fig. 22; Y

FigLQi is a partial plan ofthe pump mechanism and carriage, showing mechanism for throwing the pump outof Operation; F25. is Ya section O11 the. line 25e-25, of Fig-24.: A Fig-26 is a side view of thepump cam;

Fig. 27is a side .view oft-he coregwith its driving mechanism and clutch camj; Reference is to be had tothe accompanying Fig. '-28 is a side viewof Carriage camand Fig. 29`is a rear elevation of shaft and mechanism for operating the carriage;

Figs. 30, 31 and 32 are detaiis of lthe disc for-throwing the clutch into neutral or normaloperating position; see arrow 30 in Fig. 29; and y y Figs. 33, 34, 35 and36 are diagrammatic views showing the operation of the machine.

I have shown the invention as applied to 'a machine or mold for casting curved stereotype printing plates in which machine the core is mounted to rotate on a fixed vertical aXis'to cooperate with a semi-cylindrical vertical back movable laterally toward and from the corel to complete the mold and open it. Although this invention is capable of being used in other ways, I have shown it as being rovided with acore saws and back such as shown and described in my co-pending appli cations above mentioned. The core is r- Vtated half a revolution to deliver the semid 'cylindrical cast plate in a vertical position.

The main frame 10 has a hollow support 11 for the bottom of a vertical column 12; 0n thisv column'is rotatably mounted the rotary core or cylinder 13. This core is cooled by introducing` water through a passage 14 into the bottom of a central stationary tube 15 perforated at16 throughout one half of its circumference and vfrom end to end of the casting chamber. The perforations are used to spray water on the interior surface of the core which is located on the side on which the casting is to be made. The core turns but :j two parts connected by a breaking pin 25.

The shaft 24 is provided `with la clutch 26 for connecting it with aseparate shaft 29 in alignment therewith. A bevel gear 27 on the .shaft 29'ineshes with a bevel gear 23 fixed to the core 13 for driving it.

A lever 30 is pivoted ona stud 31 for operating the clutch. The lever has a link 38 provided with a yoke 32 entering a groove 33 in the sliding portion of the clutch for connecting and disconnecting the latter. A spring 34 normally holds the lever in a position for disconnecting the clutch. .A cam wheel 35 fiXed'on the core 13 acts ona roller 36 on the lever 30 to hold the clutch engaged throughout 4half of a revolution of thecore. This wheel 35 has twonotches 37 into either of whichthe roller 36f is pressed by the action of the spring 34 at thel end of a half revolution.l This draws out the clutch and stops the core without interfering with the operation ofthe rest of the machine. This provides for rotating the core or cylinder 13 through a half revolution and then aiiton matically plications. v Y

It has been statedthat one of the important features of this invention is to provide automatic means for controlling the various operations. LFor this purpose, the driving stopping it accordingtosaid apshaft 2O is connected; bv a worin and'worniy shaft and, ofcourse, in accordance with vthe gearing, rotate once for each half rotation of the core. y Y

The clutch cam 126 is provided with an internal cainsurface having aprojection 127 which constitutes' its operating means and works once for a short time during each revo*- lutioii. n which supports one end of lthe'shaft 125 is a fixed arm 128 which carries at its end a lever 129. One end of this lever has a roll 130 around which the cam 126 travels and which is moved downwardly once during each rotationby the projection 127. The other end of this lever k129 is connected to ya link 131 which operates the yoke 32 connected with the link 38 whichoperates the clutch 26. This clutch will be closed automatically by the projection 127 at a definite point'in the rotation of the shaft 125. After closing, the

. clutch will remain closed until opened by the spring 34 which normally tends to open it all the time and which is allowed to act when either one of the notches 37 comes into tion to' receive the roll 36. Then the clutch osi-v Extending' up "from fthe bearing will open andstay open until operated again Y by the projection 127. This provid-es for the automatic rotation of the core a half revolution, its automatic stopping at that time and starting up again without the attention of the operator.

0n the shaft 20 there is a gear 40 which,

through another gear 39, operates a vertical shaft 41 constantly. This shaft isV shownas proper distance apart to bevel and trim the curvedv edges ofthe two plates whiley on thc core and separate the riser.

AThe sawV Cam 149 has a cam groovewhich operates on a roller 140 located on a lever-141 that is pivoted at 142 to swing onits pivot. The upper end of this lever is; moved back slidable on the shaft.

and forth obviously and is connected by a link 143 with one of the pivoted brackets These brackets are pivoted on the shaft 47 but they are intended to operate together and for that purpose a stud 146 is provided connecting them.

The two parts of the shaft 41 are connected to each other in alignment by a collar 147 y The collar has screws 148 for engaging flat surfaces 145v on the two parts of the shaft. Vhen the collar is allowed tol drop down to its normal position shown in l? 4 it will connect these parts together so that they will rotate absolutely in unison. Then it is desired to introduce the lower belt 4S, this collar 147 is raised to the dotted line position in Fig. 4 and then the belt can be slipped in edgewise between the adjacent ends of the two parts ofthe shaft/41.`

kThe cam 149 actuates these brackets -46 t0 move the saws between the two positions shown in Fig. .86 and to bring them into the dot and dash line position shown therein at theftime when the mold is open andthe cylinder 13 is about to deliver the casting,

Extending outv from the frame 10 in a radial direction with respect to the core is a platform 61 having two flat surfaces 62 at its sides constituting` tracks. On these tracks run rollers 63 which are mounted on and support the slide 64 carrying the double back'48. The frame 10'y is provided with adjustable guides 65 which bear against the sides ofy this slide 64 and prevent its moving sideways and guide the back to proper positionv to register with the core as described above.

r'lhe double back 48 is moved toward and from the core by a horizontal shaft 51. On this shaft are two arms 52 connected bytwo links 58 with the opposite sides of a slide 64 on which thcbackA 48 is mounted. The turn ing of the arms 52 through a short arc results in drawing the slide 64 and back 48 away from the core to the full lineposition of the hack 48 in Fig. necessary in the ordinary operation ofthe device to separate the mold parts prior to delivery of the casting. Y

The carriage cam 151 operates a roller 1F 2 on a. lever 158 pivoted at 54 and therefore reciprocates a link 55 connected with the outer end of this lever. This `link is arranged horizontally as shown an d its further end connected with an arm v56 which is pivotally mounted on the shaft 51 and is free to swing thereon. the showing of the extreme positions in full and dotted lines inFig. 28y that this arm 56 merely oscillates and does not rotate. 'On the shaft 51 is a double clutch 57. lVhen this clutch is moved tothe right hand-position shown in Fig.` 29, it clutches the shaft 51 to the arm 56 and this shaft oscillates with the arm.l This is the ordinary operation and it results in drawing-v the carriage back at each This is allthatis It will-.beobvious from K the half rotation of the core. rlhen the back moves 'toward the core again automatically phy the completion of the other half of the oscillationof this arm 56.

`The clutch 57 is operated through a leverV 58, link 59 and hand lever 60. It is the right hand position of this lever 6,0 indicated in dotted lines in Fig. 29 which has just been described. The shaft 41 through hevel gears 98 drives a shaft 94 which through gears 89 drivesfa horizontal shaft 100. On the shaft 100 is a worm* 161 meshing with a worin gear 162 loose on the shaft 51. If the yclutch collar` 57 `is moved tothe left in Fig-29 by moving the lever 60 over to the left hand dotted -line position it will' clutch the shaft 51 to this gear ,-162 and causethe shaft 51k to be rotated by power'from the rotating shaft 100. y n

- On the end of the vshaft 51 is a disc 163 .having two teeth v164 and 165 oppositely located thereon each/provided with a slanting rear surface and an abrupt front surface and one of them being twice as high as the other.

f Thisdisc is'fiXed to the shaft to rotate with it and .when the lever 60 is moved over tothe position toA clutch the shaft to the positively and constantlydriven worm 161, a projection 166 on the Alever will be located up against the edge of the disc in the path of the vtwo projections 164 and 165. These are so located that after the 'shaft' 5.1 vhas rotated half a,

revolution, which it does while the shaft is also rotating a half revolution, the smaller projection 164 will engage the projection 166 and move the lever 60 back to the `neutral position shown in full lines. The result of this is to move the slide 64 back'to the dotted line position shown in Fig.34 to permit of the ico removal, exchange or replacement of 4the 1 matrix or matrices.

At this time the carriage 64 is left in stationary position, notbeing acted on by either the oscillating or the rotating mechanism and it will not bestarted up in any way until the operator moves the lever 60. Then he has got the new matrix or matrices properly lo- Y cated in Vthe back he swings the lever 60`back to the left behind the small projection 164. That causes the shaft 51 to be positively turned through a half a revolution in order to bring the back up to the position shown llo in Fig. 35 ready for casting'. lVhen that mo- A tion is completed the long projection 165 strikes the projection 166 and Vmoves thelever 60 clear over to the right to the dotted line position shown there. This forces the clutch out of. enga-gementl with the worm gear 162 through the neutral position shown in full lines in Fig. 29 and over into the right hand positionA in which it engages the clutch teeth on t-hehub of the `arm 56. Thereafter the back continues to reciprocate from the position shown in Fig. 35 to the fullliiie position shown in Fig. Sil and back again without further attention.

rlhis invention, as stated above, is designed to cast a plurality of printing plates on one side of a core. rllhe mold is prepared with two matrices M and M located in. the back and provided with a T-shaped'semi-circular strip 66 located in a curved siace 6'? in the back and having its flanges projecting` into the mold cavity and over the lower edge of the top n'iatrix and the upper odge of the lower matrix, preventing the metal from getting behind them. A pouring sheet S is used at the top, as usual. The bot-tom of the lower matrix is held in position in any of the ordinary ways.

Thenietal is cast and the back is drawn away. Then the saws 49, 49, l9b and 49' are brought into position at the edge of the casting;` automatically. The core is rotated now to the position shown in Fig. Sel exactly opposite to that shown in 85. During' this operation the two lower saws cut and bevel the upper and lower edges ofthe loweiI plate P and the upper two saws perform the saine two operations on the upper plate P. Be-

tween the saws 49u and 49 there is a section which is cut away from the rest of th-e casting' and falls down below when the cast plates are ejected. The saw 49 separates the riser R from the upper plate l). This riser is provided as usual with an enlarged top caused by the beveled upper end of the core or cylinder 13.

If it is desired to cast a single plate of double width or the so-called double truck plate, a single matrix M2 is used with the same pouring sheet and the space 67 is filled by a semi-circular plug,` or block 68 located behind the matrix so that the pressure of the metal will not bend the matrix at this point. The large double truck plate P2 is produced and cut by the saws 49 'and 419C so that the riser is separated and the ends of the plate beveled. The saws 49a and 49" are removed.V rihe bottom end is Vbeveled'by the shape of the mold and the saw 49 merely trims the edge.

rilhis mold will also accomplish a third object, thatis, it can cast an ordinary single foot ring' 69.

width plate in the upper position. rllhis is shown in Fig. 18 and is accomplished by substitutiiig` for the T-strip 66 or the block 63 a This also is of n`i`-shape but it extends clear across the mold cavity and holds the matrix in the ordinary in aniicr. rlliere is a difference here that the bottoni of the cast plate l2 is not beveled by this foot ring;` but is cast flat. llherefore, the saw 4&9 which this bottom is employ-ed to cut a bevel on it.

'The separation of the plate or plates from the core or cylinder is accomplished in any desired way. These plates are pushed out respectively 'on the upper Vdelivery stand 70 and the lowerdelivery stand ril which arelocated in a position to register with the cylinder l5 and support tlierplates onl theiredges. The upper stand is removably mounted by means of bolts so that it can be removed when not needed. r

rl"he back is provided at each of its side edges with a vertical rock shaft 75. The matrix bar 8O which is mounted on the shaft carries the matrix holding' clip'SS.V A@ne of these clips is provided at each side of the back for the matrix. 'lf'hesc clips in the usual way come over the ed ges of the matrix and on being,I pulled over clamp the matrix in -position agaii'ist the bar 80. i 1

As has been'statec the baclr i8 mounted to move toward and from the core both for the purpose of separating the bacx from the cast plates on the core and for the purpose of drawiiike,` the bacli out frenough to permit of exchange of matrices.

ylhe hac-lr is of double formation. having two seii'ii-cyliiidrical mold concavities or casting surfaces on'opposite sides, each one pted to hold two matrices in the manner tical stationary shaft and support which is mounted .on the slide 6a which moves baclr and forth on the t-racls. 1

Extending through this support 90 is a cooling water inlet 89 havingtwo radial ports each located at the bottom of one of the two mold cavities. On opposite sides are two pairs of water coolingvpassages'91 cast in each part of the back itself. All of thesepas sages are of semi-cylindrical formation, surrounding the semi-cylindrical mold surfaces. Each one is provided with a radial outlet port 92 at the top and a radial inlet port at the bottom. The two parts are journalled on each other at the center and their water 'cooling passages register.

The box is alsoprovided with a longitudinal passage 92 for allowing the water to drain out. lThis passage extends out hori- Zontally at thetop to forni a radial port so that when the back is swung'around the stationary support 90, the port 93 will register at the top with one of the ports 92 and the -iiilet 89 will register similarlyV in certain positions. The top of the passage 93 extends toward the core and therefore the water will circulate in the water passages 91 which extend toward the core; that is, the ones which are ready for casting, or are in the act of-casting.' `These casting surfaces are cooled there` fore while the opposite ones arenot. i

On the bottoni of the back is fixed agear 95 which is operated by a bevel gear 9S on a transverse `shaft 97. A worm and Vworin wheel 99 drive the shaft 97from the shaft 100. The worin l99 is slidingly keyed to the shaft and these wheels 99 travel along this which has been indicated above. Each partV is mounted to turn independently on ver- 7 isernia" l shaft 100 with the back 48. They are always in mesh and always rotating constantly, but the 'shaft 97 iscOnnected with the worm lwheel by a clutch 101 operated by a lever y109 connected by a link 102 with a lever 103 pivoted to it and supported on the slide 64. The other end of the lever is provided with a roll or projection 106 adapted to be engaged normally in either one oftwo diametrically'ops poste notches 107 on a disc 110 on the bottom of the rotary back 48 to lock it against rotation. `When the clutch is connected, the back is rotating. As soon as the back is .rotated half a. revolution the roll 106 comesinto regis- `tration with one of the notches 107 andis forced into it by a spring 108; This discon nects the clutch and stops the rotation.

Many of the above described features are shown in substantially the form'illustrated in my above mentioned co-pendingy applications and claimed therein. Therefore, they are not claimed in this case except as they are changed herein or` enter into 'combination withthe novel features described herein.

As stated above, 1 have shown the machine will work together when two plates are being:

cast or a single plate of double width and so that either one o-f them can be caused to work alone, if only one single width plate is tobelv cast 1 connect the shaft 100 with mechanism at the top foi' operating the upper half of the back of a similar nature to the' mechanism shown in F ig. 15 and just described. pFor that purpose 1 have shown a bevel gear 111 on the shaft 100 meshing with a similar gear 0n a vertical shaft 112. This vertical shaft eX- tends up beyond the top o-f the'back and by bevel gears 113 drives a horizontal shaft 114 similar to the shaft 100 and acting in the same way. This shaft 114 is connected by worin and gear 115 with a horizontal shaft 11G through a clutch 117 operating in the same manner as the clutch 101. For operating this clutch 1 provide a lever 203 Vconnected withr a bell crank 119 which has a pin 118 for act-uating the clutch 117. This lever 203 is oper-l ated the same way as the lever 103 and co-op crates with a ring 1,20 on the top of the back having notches similar to the notches 107 and having the same functions. The shaft 116 drives the upper half of the back through a gear on the upper end thereof operating like the gear 95 below. It will be understood that the lower gear operates the lower half of the back independently of the upper half but ordinarily the two gears are connected together through Vthe 'shaft 112 andclutches 101 and 117 so thatvthey Operate together., Either one can be thrown'into operationV by is desired to cast a Asingle plate' y the backs 48, Fig.,7, must be held in align-f n ment while being rotated. s vTo accomplish this, the backs 48 'are locl'redtog'ether by pin 197 which passes through 'lugs 198, one at-v tached to the upper back 48 and theother attached to the lowerback 48. l When thebfacks 48 y are connected by pin 197 for casting 'a' double truck plate and it is'desired to rotate Ythe backs,pthis` rotation is v.accomplished by voperating lever 103, Figs. l13 and 15, at the bottom of the lower back, the mechanismV in Fig. 14 being disconnected by withdrawing' a' pin 199 which connects lever 203 and 119. A Cotter pin is used merely to hold pin 199 in place. Being thus' V disconnected, clutch 117 held out of gear b 'spring 4196 operating through lever 119 an pin 118. Ordinarily the ymechanism in F ig.' 14 is used to operate rotation of the upper back 48,' and the mechanism in Fig. 15 is used to operate rotation of the lower back 48. j

Another feature of this invention consists inthe automatic control of the umpin the ine'tal pot l19. This is a' pump'of well known kind employing' a cylinder 171,"21 piston172 operated by a'rodv 173 and lever 174. The lever is connected by alink 1j75 with a v lever 17 6 having a rollr177 operatinginfa groovev in 'the cam170. As the earn s'haft`125` rotates constantly, the, plunger l17 2 als'owill opepi-ate upwardly each'time the core 13 comes to a stop to eject the charge'of metal through the spout 178 into the mold. InV order to prevent the discharge of metal into the mold space when the mold is not 'closed in spite of the Afact that the piston 172 Lcoiitiniies to operate,"l .inake use of a. port 179' in thegtop of the .'cylinderf171 and a valve 1:80 for closing the port. This valve norinally is closed and the' pump' operates in the manner above described Awhen is closed but wh en the valve 180' is. openedgthe reciprocation of the piston 172 can take place withoutV discharginganyV metal. becauseA in thatV case the metal will flow through the port 179 instead of being liftedv into and discharged,through the spout 178. F or operating thev'alve 180 'I provide the 'carriage 64 witha frame 181 havingl a'. cam

182 thereon. This vframe is provided with a hub slidable on the shaft 100 and wheneverthe carriage 64 moves back Yto the position shown in full lines in Fig. 34, as itis ordina/ris ly in the casting operation, the cam 182 will move back with vit without performing any v'funct'ion., But when the carriage moves 'back beyondv this positionin' order to get into the dotted line position in;Fig. 34`lthe Cain will engagea r'oll 183 onfanarin 184 on a. vertical shaft 185. This shaft has at the topan arm' 186 connected by a' link 187 with a bellcrank l.188. `A spring 189 normally holds the bell crank out of operative position but when the cam moves the roll 183 the bell crank is forced down to engage a collar 190 on the valve stem 191i tov force the valve 180 down into open position and prevent the discharge of metal by the pump. rIhis occurs, of course, when the sha-tt 51 is being rotatedl by the worm 161. l e Y From the diagram shown in Fig. 33 it will be seen that the sequence of operations is such that a plate or set of plates can be cast every fifteen seconds by this machine. Starting at the point marked zero it takes one second to close the mold and then one and a halt v seconds to pump the metal intoit. The parts then continue to operate for ten seconds while the casting is being cooled. It then takes one second to open the mold and then one and one halt seconds tol swing the core around and vbring the plate into position for discharging and to sawthe riser off and trim the ends of the plates. The total time consumed is {ifteen seconds for a cast or set of two casts.

The operation will be understood from .what has been stated and particularly from an inspection of the diagrammatic views on the last sheet ot drawings. It will be lseen from what Yhas been stated that this invention can be applied Vto a machine having a back member of two parts, each carrying a `matrix capable of being rotated either automatically together or one of them singly and that the two parts are capable of carrying a single or`double page matrix for casting a double width plate, and that the opening and closing of the casting box isalso done entirely automatically and without the interpositionof any hand operation. The operator does not have'to control the action of the machine unless he wishes to move out the back to change the matrix. Otherwise it will go through the sequence of operations indicated iii Fig. 33 over and over in an entirely automatic manner. The ina-chine can be timed to maintain a good rate of production and no hand work need be done in connection with its operation except to remove the plates and vrisers when they are deliveredand to replace the old matrices with new ones. The pump also operates automatically and its control also is automatic as stated to prevent discharging metal when the mold is open. This permits oi' a very material increase in the out- .putoi the stereotype machines now known without increasing the loor spa-ce or materially increasing the labor used to operate them.

Although I have illustrated and described only asingle form lof the invention, I am aware of the` fact that modifications can be lmade 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 limitedvto all the details of construction herein shown-and described but what I do claim is Y y 1. In a stereotype printing plate' mold, the combination with a core, of a back cooperating therewith and having. a length sufficient to receive two stereotype printing plate matrices therein in alignment, said back consisting of two parts'in axial alignment, each rotatable independently vot the other.

2. In a stereotype printing plat-e mold, theV combination with a core', of a back co-operating therewith and having a length suihcient to receive two stereotype printing plate matrices therein in alignment, said back consisting of two parts in axial alignment, one

ing the two rotatingmeans to cause the two.

parts to 'rotate in unison.-

t. In a multiple stereotype platev casting machine, the combination withl a'core rotatable on an axis for delivering a casting out ot the mold, and aback cooperating therewith and consisting of two parts, ot a nonrotatable shaft on which both parts of said back are independently rotatable, means 'for' moving said back away trom the core, means whereby when the back is moved to its limiting position both parts of the back will be connected with asource of power and iotated, and means for automatically stopping the rotation ot' each part of the back independently when it has completed a half revolution. y

5. In a multiple stereotype plate casting machine, the combination with a cere and a back cooperating therewith and consisting of two parts, of a non-rotatable shaft on.

which both parts of said back are independently rotatable, means whereby bothY parts ot the back will `be connected with a source of power and rotated, and means for auto- 5 matically stopping the rotation of each part of the back independently when it has conipleted a halt revolution, each of the last named means being capable o' being thrown outof action manually.

6. In a multiple casting machine, the combinationy with a core and a back Yconsisting' .l

'of a plurality of parts in axial alignment each adapted to receive an independent matrix and each adapted to cooperate with the core, ot a non-rotatable sha-ft on which both parts ot said back are rotatably mounted,

'means for moving said bach away from the core, a bottom and a top shaft each oonnectedl with one of the parts'of the baokifor rotating it, a clutch on each shaft, a shaft for connecting said clutches, means whereby when the hack is moved baci; one otl the lirst named shafts will be connected with a source of power' and rotated, and independent meansfor operating the two clutches. n

'7. ln. a mold tor casting a plurality of stereotype printing plates, the combination of a convex eore and a hack comprising a plurality ot parts each having a casting surface thereon for cooperating with the core,

with means on which each part of the back' is adapted to turn independently, one part of the haelt being joui-na led on the other, means for i'ntrofflueing water t'or cooling purposes into the interior oi'f one et said parts behind its casting" surface, and means extending through said part for allowing the water-to circulate into the other part behind the cast ing surface thereof.

8.' ln amultiple stereotype platefcasting machine, tne combination with a core rotatable on an axis for delivering a casting-out et the mold, and a haelt cooperating therewith and consisting of two' parts, of a *non- L 1 .if i f' rotatable shalt on` which both parts vvorsaid bach are independently rotatable, means for,V

moving said back away from the core, means whereby when the baclris moved t-o its limiting positionboth parts ot the'bael; will he Connected with a source of 'power and rotated, means t'or automatically stopping the rotation of each part of the baci; 'independently when it has completed halt revolution, a set oi constantly rotating saws, and means 'for the core to out into the cast when the core rotates to deliver it.

S). ln mold tor casting a stereotype printing plate, the combination with aback, of a rotatably mountedcore adapted to cooperate therewith, a constantly driven shaft, a clutch tor eonnectin the shai't with the core tor rotating the core,means rotatable in unison with said shalt tor automatically throwing in said clutch at delinite point in the rotation otI said shaft, a sawy mounted to move toward and trom the core` and means mounted to rotate with said shaft for autol matically moving the saw toward the core to cnt into the Vcast when the clutch is i a Camshaft. connected with said shaft to rotate therewith, a cam on said shaft, a roll operating on said cam, a leverv for tlfiro-wmg the clutch, means connected with and `operv ated by the roll for operatirn'gl said Yleverto throw .the clutch 1n, a set of saws mountedV automatically vmoving said saws toward y sition to cut into the casting as'it is ejected :trom the mold and trim the curved edges of the plate, a cam shat't, a cam on the cam shaft for automatically controlling the opening and closing of the mold, a saw cam on said shaft, and means operated by Said saw cam tor movingl the saws into operative position automatically and periodically.

l2. ln a stereotype plate easting'machine, the combination of a core adapted-to turn to deliver the casting, a segmental back, and

sliding traine on which said hack is mounted, with a shattf connected with said frame `tor moving the hack toward and from the core, a cam shaft, a cam on the cam shaft for controlling the operation of the first named shaft, Saws tor operating on the east plate while located on the core, and a cam on said cam shaft/having connections for moving saidsa-ws toward the core. as the back starts to move away.

` 13. In a curved stereotype. `plate casting machine, the combination with a curved back anda shaft, of a core, a clutch for Connecting said shaft with the. corev forv rotating it, a

cam shaft connected with said shaft to ro.

tate therewith, a cam on Said shaft, a roll operating on said cam, ailcver for throwing the clutch, means connected with and operated by the roll for operating said lever to throw the clutch in, a set of saws mounted to move bodily toward the core to enter a cast thereon, means for rotating said saws constantly, a second cam on the `cam shaft connected with said saws to move them toward the core when the clutch is thrown in, and a thirdcam on said cam shaft connected to draw the vback away from the core. just be orethe core turning cam'starts tov turn the 'f core to deliver a cast. 14. In a mold for casting a curved stereotype printing plate, the combination with a back, ot a 'rotatably mounted core adapted to cooperate therewith, a Aconstant-ly driven shaft, a Clutch for connect-ing the shaft with the core for rotating the oore,lmeans rotatable in unison with saidv shaft for automatically throwing in said clutch at a definite point in the rotation ot' said shaft-,a saw mounted to move toward and from the core, means i mounted to rotate with said shaft for antov4 matieally` moving the.y saw toward the core' to cut into the east when the clutch is thrown in,-and means operated by said'sha-t for periodically and automatically separating the bach from-the.V core.v

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15. In a curved stereotype plate casting mold, the combination with a cylindrical core and a double semi,-cylindrical back, of means for periodically, automatically and repeatedly separating the. baci; from the core, means for disconnecting` the back from the separating means, and means adapted to be operated by the separating means for turning the hack around to present the other part of it to the core.-

16. In a stereotype plate casting mold, the combination with a core and a bach having` two concave casting` faces oppositely located thereon, of means for repeatedly separating;` the baci; and core, manual means for disconnectingv the back from the separating;` means, and moans controlled by said manual means for automatically turning` the hack exact-ly half Way around when the mold parts are separated. Y

l?. In a stereotype casting' mold, the combination of two mold parts adapted to form a complete mold when brought together, one of said parts being adapted to carry a castw ing matrix, means for repeatedly moving the latter part directly aivay from the other for freeing` the casting and returning it to cast.- ing position automatically, automatic means for moving said part in another direction for Xposintgv its inside casting surface. and alloW- ing` the-,convenient inspection orlenchange of its matrix, and manually controlled means for connecting either of said means with a source of power but not both at the same time.

I8. In a curved stereotype plate casting mold, the combination With a convex core adapted to have a plurality of plates cast on different faces thereof, of a baclrhavinga. plurality of concave casting surfaces each adapted to carry a matrix and tol cooperate with one of said surfaces of the core, means for moving,l the back toward and from the core to close and open the core vautomatically as long as desired, means for moving said back further from the core to permit inspection of the matrix, a shaft for operating,` each of the last tivo means, a clutch for connectingl either of said means with the shaft, means: for turning the back to bring` another of said casting surfaces thereon into registration With the core to complete the mold, and automatic means for operating the last two named means.

y19. In a stereotype plate cast-ing mold,.the combination with al core, means for moving said core for deliverino' a cast plate, and a back for cooperating with the core, of means for drawing the back awayifrom the core and returning it automatically to open and close the mold, means for moving the back to a point beyond the ordinary open delivering position, a hand lever, and means operated by the hand lever for connecting,` the back with eitherl of said means at will,

20. In a stereotype plate casting mold, the

combination With a core, means for moving said core for delivering a cast plate, and a.

back having a plurality of casting` surfaces for cooperating` With-the core, of means for drawing the back turning,` it automatically to open and close the mold, means for moving the back to a point beyond the ordinary open delivering position and turning the back automatically through a predetermined angle to bring another face of said back into .registration With the core, a hand lever, and means operated by the hand lever for connecting` the backY with either ofsaid means at Will.

2l. In a stereotype plate castifngmachine, the combination with a core and a reciprocable back, of a shaft, means on said shaftconnected with said back fo-r reciprocating` it, a cam shaft, a cam on the cam shaft, means for connecting said cam for operating said means as the cam rotates, a gear loose on the first named shaft, means for rotating said near constantly, and means for clutching the shaft to the gear so as to rotate said shaft and reciprocate theback through a longer path o-f travel. A

In a stereotype plate casting machine, the combination With a core and aV reciprocable back, a shaft, an arm loose on said shaft connected With said back for reciprocating it, a cam shaft, a cam on the cam shaft, means for connecting said cam with said arm for oscillating the arm as the cam rotates, a clutch" on the first named shaft, manual means for connecting said clutch With thev arm for causing; the shaft to oscillate and the back to reciprocate, a gear loose on the first named shaft, means for rotating said gear constantly, and means for clutching the shaft to the gear so as to rotate said shaft and reciprocate the back through a longer pat-h of travel.

23. In a stereotype plate casting machine, the combination with a core, of a back, a shaft, an arm loose on said shaft connected with said back for reciprocating` it, means for connecting said arm with a sourceof power for oscillating the arm, a clutch on au'ay from the core and re-r the shaft, agear loose on the shaft, .means for rotating said gear constantly, saidV clutch having tivo faces and movable to threeV po-VV sitions m one of which it 1s neutral andthe gear and the arm atthe therewith and disconnected therefrom, means for rotating said shaft adapt-ed to be con-v nected therewith and .disconnected l.therefrom, a clutch for connecting either the oscillating or the rotating means with the shaft but not both at the same time, a lever for operating said clutch, whereby when the lever is in neutral position the back will not move, when the lever is in one eXtreme position the back will be reciprocated through a short path for opening and closing the mold, and when 'the lever is in the opposite extreme position the back will be reciprocated through a longer path so as to draw it a distance away from the mold to permit inspection and replacement of the matrix.

25. In a stereotype plate casting machine, the combination with a core, of ka back, a shaft, means for connecting theshaft with the back to reciprocate the back fro-m the shaft, means for oscillating said shaft, means for yrotating said shaft, a clutch for connecting either the oscillating or the rotating means with the shaft, a manually-controlled lever for operating said clutch,.whereby when the lever is in neutral position the back will not move, when the lever is in one eXtreme position the back will be reciprocated through a short path, and when the lever is in the opposite extreme position the back will be reciprocated through a longer path, and means for automatically disconnecting the rotating means from the back after the back has been drawn away to the limit of its re\ ciprocation.

26. In a stereotype plate casting machine, the combination with a core, of a back for cooperating therewith, said b'ack'being movable toward and from the core, a shaft, means for connecting the shaft with the back to reciprocate the back from the shaft, means for oscillating said shaft, means for rotating said shaft, a clutch for connecting either the oscillating or the rotating means with the shaft, means whereby the back can be prevented from moving, or will be reciprocated through a short path for opening and closing the mold, or reciprocated through a longer path so as to draw it away from the mold to permit inspection and replacement of the matrix, means for automatically disconnecting the rotating means from the back when the back has been drawn away to the limit of itsy reciprocation, and means forrotating the back a half revolution automatically when again connected with the rotary means.

27. In a stereotype. plate castingmachine, the combination with a core, of a back, a shaft, means for connecting the shaft -with the yback to reciprocate the bacl from the shaft, means for oscillating said shaft, means for rotating said shaft, a clutch for connecting either the oscillating or the rotating means with the l shaft, a manually-controlled lever for operatingsaid clutch, whereby when the lever 1s in neutrall position the back will not move, when the lever is in one eXtreme position the back will be reciprocated through a short path, and when the lever is in the opposite extreme position the back `will be reciprocated through a longer path, and adisc on said shaft having two opposite teeth thereon, the lever having a tooth in position to be engaged by one of said teeth upon the completion of half a revolution to move the lever away from its position for connecting the shaft with the rotating means operative when the back has been moved to the limit of its reciprocation.

28. In a stereotype plate casting machine, the combination with a core, ofv a back, a shaft, means for connecting the shaft with the back to reciprocate the back from the shaft, means for oscillating said shaft, means for rotating said shaft, a clutch for connecting either the oscillating or the rotating means with the shaft, a manually-controlled lever for operating said clutch, a disc on said shaft having two opposite teeth thereon, one longer th an the oth er, the lever having atooth adapted to be engaged first by one of said teeth and then bythe other each after a half revolution to move it from a position for connecting the shaft with the rotating means, the short tooth being just long enough to return the lever to neutral position, and the long one being long f enough to return the'lever tothe opposite extreme position and clutch the shaft to its oscillating means. v p l 29. In a stereotype plate casting machine, the combination with a core and a reciprocable bach, of a shaft Vfor reciprocating the back, separate means'for oscillating and rotating vsaid shaft, a clutch for .connecting the shaft with either thek rotating or the oscillating means, a lever'for controlling the clutch having a tooth onit, vand a disc on the shaft having two opposite teeth of different lengths for engaging said tooth, one of them being adapted to return the lever to neutral position and the other to return it to its opposite extreme position to clutch the shaft to the oscillating means, whereby-when the lever is operated to connect the shaft with the rotating means the shaft will be rotated half a revolution and the back will 'be' drawn away from the mold to its extreme position and then the clutch will be moved to disconnectthe shaft from thev power to permit of inspection and exchange of matrices, and whereby if the lever is again moved to connect the clutch with the rotating means a second half'revolution of the'sliaft will causethe back to bereturned to casting position and the lever to be thrown over into its opposite extreme position to clutch the shaft to the oscillating means, whereby the back will thenbe' connected with the means for opening and closing it automatically.

V30. Ina stereotype plate casting machine,

the combination with a core, of a concave back,

a slideV onY whichfsa-id back in1mounted, a

shaft, an arm loose on said shaft connected with said slide for reciprocating it, a cam shaft, a cam on the cam shaft, means for connecting said cam with said arm for oscillating the arm as the cam rotates, a clutch on the first named shaft, manual means for connecting said clutch with the arm for causing the shaft to oscillate and the slide to reciprocate, and another cam on the cam shaft having connections for rotating the core a revolution to each full reciprocation of the slide.

31. In a stereotype plate casting machine, Jhe combination with a core, of a concave back, a slide on which said back is mounted, a shaft, an arm loose on said shaft connected with said slide for reciprocating it, a cam shaft, a cam on the cam shaft, means for connecting` said cam with said arm for oscillating the arm as the cam rotates, a clutch, means for connecting said clutch with the arm for causing the shaft to oscillate and the slide to reciprocate, another cam on the cam shaft having connections for rotating the core a half revolution, a third cam on the cam shaft, a pump for introducing metal into the mold, means on said pump for rendering it inoperative, means on the cam shaft for operating` the pump con# stantly, and means movable with the slide for rendering the pump inoperative when the back is moved to its extreme retracted position.

32. In a stereotype plate casting machine, the combination with a core, of a back, a shaft, means for connecting the shaft with the back to reciprocate the back from the shaft, means for oscillating said shaft, a clutch for connecting the oscillating means with the shaft, a lever for operating said clutch, .whereby when the lever is in neutral position the back will not move and when the lever is in one eXtreme position the back will be reciprocated through a short path for opening and closing the mold, a metal pump for introducing metal into the mold, means for constantly operating the piston of said pump, a cam operating with said back, a lever having its end ink a position to be engaged and operated by said cam when the back is retracted to its extreme position, and

means connected with said lever for render.

ing said pump inoperative in spite of the continuous operation of its piston as long as the back remains in said position.

33. In a stereotype plate casting machine, the combination with a core, of a bach, a shaft, means for connecting the shaft with the back to reciprocate the back from the shaft, means for oscillating said shaft, means for rotating said shaft, a clutch for connecting either the oscillating or the rotating means with the shaft, a manuallyfcontrolled lever for operating said clutch, whereby when the lever is in neutral position the back will not move, when the lever is in one eX- treme position the back will be reciprocated hrough a short 'path for opening and closing the mold, and when the lever is in the opposite eXtreme position the back will be reciprocated through a longer path so as to draw it Yaway from the mold, a metal pump for introducing metal into thc mold, means for constantly operating the piston of said pump, a cam operating with said back, a lever having its end in a position to be engaged and operated by said cam when the back is retracted to its eX- treme position by said rotating means, and means connected with said lever for rendering said pump inoperative in spite 0f the continuous operation of its piston as long as the baclr remains in said position.

34. ln a stereotype plate casting machine, the combination with a core, a back, and a pump, of means forrautomatically moving the back against the core, means cooperating` therewith for then automatically operating the back moving means to draw the back away from th-e core, means for automatically operating the pump to fill the mold, means for automatically turning the core a half revolution timed `to operate as soon as the back moves away to deliver the cast plate, constantly rotating saws, and means timed'to operate when the core starts to turn for moving the saws into a position to saw through the plate as it turns on the core. f

35. The combination with a mold for cast-y ing a curved stereotype printing plate, of a setof saws arranged to move together toward and from the casting device into a Vposition to out into the casting while it is being ejected from the mold and trim the curved edges of the plate, means for automatically controlling the opening and closing of the mold, and means for moving the saws into operative position automatically and periodically.

36. In a stereotype plate casting machine, the combination of a core adapted to turn to deliver the casting, a segmental back, and a sliding frame on which said back is mounted, with al shaft connected with said frame for l moving the back toward and from the core, a cam shaft, a cam on the cam shaft for controlling the operation of the first named shaft, saws for operating on the cast plate while located on the core, and means for moving said saws toward the core as the back starts to move away.

87. ln a curved stereotype plate casting machine, the combination with a curved back and a shaft, of a core, a clutch for connecting said shaft with the Vcore for rotating it, aV cam shaft connected with said shaft to rotate therewith, a cam on said shaft, a roll operating on said cam, a lever for throwing the clutch, means connected with and op* erated by the roll for operating said lever to throw the clutch in, a set of saws mounted to move bodily toward the core to enter a cast thereon, means for rotating said saws liti

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