US1785164A - Multiple-stereotype-plate-casting machine - Google Patents

Description

Dec.- 16, 1930. i WOOD 1385364 MULTIPLE STEREOTYPE PLATE CASTING MACHINE Filed A rils. 192? Q SheetS-Sheet 1 MW wAxrc 7502.

Way? 3 Dec. 16, 1930. H. A. w. WOOD 6 MULTIPLE STEREOTYPE PLATE CASTING MACHINE Filed A ril 9, 1927 9 Sheets-Sheet 2 Dec. 16, 1930. 1,785,164

' MULTIPLE STEREOTYP-E PLATE CASTING MACHINE H. A. w. WOOD Filed April 9, 1927 9 Sheets-Sheet s Dec. 16, 1930. H. A. w. WOOD I 1,785,164

MULTIPLE STEREOTYPE PLATE CASTING MACHINE Filed April 9, 192". 9 sheets-sheet 4 zitozaor' ZQW A .7 6??? 7150i Dec. 16, 1930. H. A. w. WOOD 1,785,164

MULTIPLE STEREOTYPE PLvATE CASTING MACHINE Filed April 9. 192 9 Sheets-Sheet 5 Dec. 16, 1930. H. A. w. WOOD 1, 735,164

MULTIPLE STEREOTYPE PLATE CASTING MACHINE Fiied April 9, 1927 9 Sheets-Sheet 6 z \N m w 0.0 \& W\\ K fi H w I 7 JW 7 ///4 zzzzzgr v 7 P, w 1? Q; x. l v u Dec. 16, 1930. 1,785,164

' MULTIPLE STEREOTYPE PLATE CASTING MACHINE H. A. w. W000 Filed April 9, 1927 9 Sheets-Sheet 7 Ware 20 022 wfi l 5 @WQLZ F2 Dec. 16, w D

.MUL'I'IPLE STEREOTYPE PLATE CASTING MACHINE Filed April 9. 1927 9 Sheets-Sheet 8 Dec. 16, 1930. V w WOOD 1,785,164

MULTIPLE STEREOTYPE PLATE CASTING MACHINE Filed April 9, 1927 9 Sheets-5heet 9 lzraaay Jfkydiidid dz Patented Dec. 16, 1930 UNITED STATES PATENT OFFICE.

HENRY A. WISE WOOD, OF NEW YORK, N. Y., ASSIGNOR TO WOOD NEWSPAPER MA- CHINERY CORPORATION, OF NEW YORK, N. Y., A CORPORATION OF VIRGINIA MULTIPLE-STEREOTYIPE-I'LATE-CASTING MACHINE Continuation of application Serial No. 568,137, filed .Tune 14, 1922. Renewed September 22, 1926. This I application filed April 9, 1927. Serial No. 182,525.

This isa Continuation of my allowed application, Serial No. 568,137, filed June 14, 1922 and renewed September 22, 1926.

This invention relates to a machine for casting stereotype printing plates ordinarily of the curved form.

The principal objects of the invention are to provide a machine of that character which will have double the capacity of the ordinary machine without increasing the floor space or the amount of labor required and without greatly increasing the cost of the machine itself; to provide a machine of this character capable of casting two plates and a riser all in a single piece from two matrices and having means for cutting the plates apart and trimming their edges and also capable of casting a single two-page wide plate called a double truck; to provide simple and effective means for holding the adjacent ends of twomatrices set end to end but spaced apart in the casting back, which means will be capable of preventing the metal from getting in behind ,either of the matrices and which can be replaced either by a spacing piece which will not hold the double matrix when casting a double truck, or by a filling piece or bottom ring to be used for casting a single plate inone chamber of the mold; to provide for supporting this strip independently of the back and cylinder so as to remain in sta-' tionary position while the back moves from it and the cylinder rotates; to provide means for automatically pushing the two plates out, by the motion of the back in closing the mold, one farther than the other so that either one can be grasped easily for removal; and to provide in combination with the casting apparatus specially arranged saws for cutting the casting into two plates and one riser and simultaneously trimming the top and bottom Curved edges of both plates, if desired, or for trimming the extreme top and bottom curved edges of the casting if the double truck plates is to be produced and also capable of cutting off the riser and trimming the bottom curved edges of the single plate when the machine is used. for that purpose.

The invention also involves other features of construction and combinations of parts cooperating with those above mentioned as will appear.

Reference is to be had to the accompanying d rawings, in which Fig. 1 is a front elevation of a machine constructed in accordance with this invention;

Fig. 2 is a side elevation of the same, showingkby dotted lines three positions of the a Fig. 3 is a plan with the parts in the casting position;

Fig. 4 is a fragmentary plan of the means for controlling the stopping of the machine at the end of a complete half revolution Fig. 5 is a central sectional view on the line 5-5 of Fig. 3;

Fig. 6 is a horizontal sectional view on the line 6-6 in Fig. 1, showing an ejected plate lying on the upper delivery stand and a fresh cast plate on the other side of the cylinder with the mold still closed;

Fig. 7 is a plan of the matrix clamp which holds the bottom of one matrix and the top of the other during the casting operation;

Fig. 8 is an enlarged bottom plan of a filling-in piece between the two side matrix clamps casting side of the mold, showing it in the position for casting with the cast plate in position'therein;

Fig. 11 is a similar sectional view, showing the core turned around to the opposite position, the back, of course, therefore, not appearing and illustrating the cutting of the casting into parts by the saws;

Fig. 12 is a similar view showing the separation of the parts of the casting from the core;

Fig. 13 is a sectional view similar to Fig. 10 but showing only a part of the device and illustrating the use of a filling piece and bottom ring when it is intended to cast a single plate in the upper part of the mold cavity;

Fig. 14 is a view similar to Fig. 10, showing the device as used for casting a double truck plate;

Fig. 15 is a view similar to Fig. 11, showing the same plate turned half way around with the core or cylinder and the saws for trimming its ends;

Fig. 16 is a View similar to Fig. 12, showing the separation of the parts of the casting when the mold is used for this purpose;

Fig. 17 is a horizontal sectional view on the line 1717 of Fig. 1, illustrating the ejectors for separating the cast plate from the core or cylinder after it has turned around to the delivery position and indicating the relative position of the trimming saws at that time;

Fig. 18 is a similar view showing the position of the parts as in Figs. 11 and 15 Fig. 19 is a similar view showing the position of the parts as in Figs. 12 and 16;

Fig. 20 is an elevation of one of the ejector fingers for separating the cast plate from the core;

Fig. 21 is an elevation of one edge of the back illustrating the two sets of matrix clamps; I

Fig. 22 is a fragmentary view of the two matrices as used when a double truck plate is cast;

Fig. 23 is a fragmentary plan of the top of the casting box showing the upper matrix bar locking cam and connected parts;

Fig. 24 is a similar view showing the cor responding parts at the bottom; v

Fig. 25 is a sectional view on the line 25-25 of Fig. 21

Fig. 26 is a sectional view on the line 26-2G of Fig. 21;

Fig. 27 is an elevation with parts in section of an eccentric for operating the matrix clip; and

Fig. 28 is a fragmentary plan of the casting box showing the stops.

I have shown the invention as embodied in a machine of the type in which a cylinder or core is mounted to rotate on a fixed vertical axis and a semi-cylindrical back is moved laterally toward and from the core to complete the mold and open it and in which the core is rotated half a revolution to deliver the semi-cylindrical plate in a vertical position. For this purpose I have provided a frame 10 which not only serves as a supporting base as usual, but also extends to the top of the machine and has at the top a cross piece 11 provided with a steady rest for the top of the vertical column 12. By providing this top rest the column is steadied and held rigidly in central position. This is important because it assures castings of uniform thickness. ()n this column is rotatably mounted the rotary core or cylinder 13.

The frame is also provided with a pair of horizontal tracks 14 at the bottom on which are mounted rollers 15 supporting two sliding frames 16. These tracks are adjustable transversely by means of screws 9. The frames carry a cross shaft 17 at the top on which is pivotally mounted the semi-cylindrical back 18 constituting part of the mold. This back is moved directly away from the core by means which will be described below to open the mold and permit the core to be rotated to deliver the cast.

I have shown the device as located adjacent to the usual melting pot 19. The power for the machine is provided through a driving shaft 20 which by means of a worm 21 drives a vertical shaft 22 having a gear connection 23 to a horizontal shaft 24 at the top of the machine. On this shaft is a pulley 25 which preferably drives the usual mixer in the melting pot.

The shaft 24 is provided with a clutch 2G for connecting it with a separate shaft in alignment therewith having on it a bevel gear 27 meshing with a bevel gear 28 fixed to the core 13 for driving it. For operating the clutch, I have provided a lever 30 pivoted on a stud 31 on the cross piece 11. This lever has a roller 32 entering a groove in the collar 33 on 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 but a cam wheel 35 fixed on the core acts on a roller 36 on the lever 30 to hold the clutch engaged throughout practically half of a revolution of the core. This wheel 35 has two opposite notches 87 into one of which the roller 86 is pressed by the action of the spring 34 at the end of a half revolution. This draws out the clutch and stops the core without interfering with the operation of the rest of the machine. The core, of course, is started by moving the lever 30 to the position shown in Fig. 4. This provides for rotating the core or cylinder 13 through a half revolution and then automatically stopping it.

()n the shaft 20 there is a gear ll) which, through another gear, operatesa vertical shaft i1 constantly. This shaft is shown as provided with two pulleys 42 which, by means of two belts 43 passing over several idlers 4i, positively rotate two vertical shafts 45 located in bearings on brackets 16 on the frame 10. These brackets -16 are pivoted on centers 47 so that they can swing. Under ordinary circun'istances they are pinned together by a pin 18 so that they necessarily work together. In this way, the two shafts 45 are rotated always at the same speed but by two different belts. If either of them meets with any special resistance it will not interfere with the action of the other. On these shafts are mounted saws 49,49 ,49 and 49 located at the proper distance apart to perform certain functions as will appear hereinafter.

The movement of the back toward the core is performed manually by a handle 50 mount ed on a horizontal shaft 51. On this shaft are two arms 52 connected to two links 53 which are pivoted to opposite sides of the back 18.

p The swinging of the handle and the turning of the arms 52 through a short arc results F in drawing the back away from the core to the vertical dotted line position in Fig. 2. This is all that is necessary in the ordinary operation of the device to separate the mold parts for delivery of the casting. When it is necessary,

- however, to place a new matrix in the mold lines in Fig. 2. This, however,

the handle is swung way over to bring the frame 16 back to the position shown in dotted does not bring the back away in a parallel direction because the bottom of the back strikes a roller 54 rotatable on a shaft on a stationary bracket 55 on the frame. This arrests the further mo-: tion backward of the bottom of the back and brings the back over into the position indicated in dotted lines in Fig. 2. The operator can then remove the old matrix or matrices and replace them by new ones in a convenient manner. I p

Also mounted on the shaft 51 is a cam 56. This cam has a groove 57 composed of two parts which operate a roller 58 on a lever 59. The first one to act on the roller when the back is moved back from the core is so shaped that it will swing the lever at that time and move a link 60 connected with the lever and with one of the brackets 46. This motion swings inwardly the set of brackets 46 about the vertical shaft 47. Therefore, the saws on the shafts 45 will be swung inwardly toward the plate. As they rotate constantly, they will act on-theplate in a manner to be described below. When the back is drawn into the inclined position in Fig. 2, the second half of the groove 57 will not affect the action of the saws because it is concentric and leaves them in a position which they assume when the back is drawn out to the vertical position away from the core.

This invention, as stated above, is designed especially to cast a plurality of printing plates on one side of a core. The way in which'this is done is indicated in Figs. 10,11 and 12 which show a cross section of the core and back with the cast metal in the mold. The mold is prepared with two matrices M and M each of full size, i. e. the size of an ordinary newspaper page. They are located in the back and provided with a T-shaped semicircular strip 61 located in a concave space 62 in the back and having its flanges projecting into the mold cavity and over the lower edge of the top matrix and the upper edge of the lower matrix, preventing the metal from get tin 'behind them. A ouring sheet S is used at the top, as usual. 'l he bottom of the lower matrix is held in position in any of the ordinary ways.

The metal is cast as indicated in Fig. 10

' and the back is drawn away. Then the not bend the matrix at saws 49, 49, 49 and 49 are brought into positlon at the edge of the casting automatically by the motion of the back. The core is rotated now to the position shown in lgs. 11 and 18 exactly opposite to that shown. in Fig. 10. During this operation the two lower saws cut'and bevel the upper and lower edges of the lower plate P and the upper two sawsperform the same two operations on the upper plate P. Between the saws 49* and 49* there is a section W which 1s cut away from the rest of the casting and falls down below as indicated in Fig. 12 when the cast plates are retracted. The saw 49 separates the riser R from the upper plate P. This riser is provided as usual with an enlarged 'top caused by the beveled upper end of the core or cylinder 13 and is temporarily held in position by a plug 63 around which it is cast. I

If it is desired to cast a single plate of double width or the so-called double truck plate, this is done in the manner shown in Figs. 14, 15 and 16. In this case a single matrix M? is used with the same pouring sheet and the space 62 is filled by a semicircular plug or block 64 located behind the matrix so that the pressure of the metal will this point. The large double truck plate P is produced and cut by the saws 49and 49 so that the riser R is separated and the ends of the plate beveled. The saws4=9 and 49 are removed. The bottom'end is beveled by the shape of the moldand the saw 49 merely trims the edge as in Fig. 11. This plate is separated from the core, as shown in Fig. 16.

This mold will also accomplish a third object, that is, it can cast width plate in the upper position. This is shown 1n Fig. 13 and is accomplished by substituting for the T-strip 61 or the block 64 a foot ring 65. This also is of T-shape but it extends clear across-the mold cavity and holds the matrix in the ordinary mann er. lhere is a difference here in that the bottom of the cast plate P is not beveled by this foot ring but is cast flat. Therefore, the saw 49" which trims this bottom is modified so as to cut a bevel on it.

The separation of the plate or plates from the core or cylinder is accomplished by two pairs of spring pressed pivoted ejecting fingers 66 and 67. These are carried by the back and the 7 late P out are arranged farther from the ack than the other two so that they push this plate farther away from the cylinder or core. This is done so that the hands of the operator may be placed under the edges of the plates to take out either one of them first, as may be desired. These plates are pushed out respectively on the upper delivery stand 70 and the lower delivery stand 71 which are located in a position to register an ordinary single pair 67 for pushing the lower 1 with the cylinder 13 and sup ort the plates on their edges as indicated in ig. 6 especially. The upper stand is removably mounted by means of bolts so that is can be removed when not needed. It has a slot 72 for the shaft 45. It also supports two spring pressed rods 68. To these rods is secured the T-strip 61 by means of thumb screws 69. On each end of the T-strip 61 is mounted a plate 96 and on each side of the core is a filling-in piece 96 coming between two side matrix clips.

The back is provided at each of its side edges with two vertical rock shafts 75 in alignment. Each one is held in one position by a spring 73. On each of these shafts is mounted an arm 76 to which is pivoted an operating handle 77 for swinging these rock shafts in opposition to its spring. One of these handles is at the .top of each half of the back. Located on each of these shafts 75, one at the bottom and the other at the top of the back, are two arms 74. The upper one is designed for engaging the matrix bar locking cam 78 at the top and the other the bottom matrix bar locking cam 79. Turning these handles will unlock the two matrix bars 80, which are mounted on the respective shafts 75. .l

On each of the matrix bars are mounted two studs 81 having eccentrics 82 thereon. Each of these is provided with an arm 83. The two arms on each half of the back are connected by a link 84 and one of the arms 83 is provided with a handle 85 for operating the two eccentrics. Each eccentrlc is'connected by a link 86 with a stud 87 on the matrix holding clip 88. One of these clips is provided at each side of the back for each matrix. These clips in the usual way come over the edges of the matrix and on being pulled over by the eccentrlcs, clamp the matrix in position against the bars 89, as will be understood from the description and drawing of these parts. They are duplicated at the top and bottom. The clips are shaped at their adjacent edges with notches 90 for receiving the strip 61 when that 15 used. However, if the mold is to be used for casting a double page plate, the clips are lengthened outand the notches om1tted, as indicated in Fig. 22, where modified (3113)- 88 are shown.

The interior of the back is cooled by making it hollow and directing water into it in the usual way. Also the core or cylinder is provided with a central stationary tube 92 perforated at 93 on one side, that is, the s de in which the casting is poured and receiving water from a pipe 94 up through a radial opening 95 in the central column or shaft 12. In this way, the tube 92 is used to spray and cool the interior of the core on the face on which the casting is located when cast. The

Operation In the operation of the device, the handle 50 is turned over to bring the back into its inclined dotted line position in Fig. 2. The matrices and pouring sheet are inserted, the handles 85 and '77 operated to clamp the matrices on their edges. The back is swung up into the vertical dotted line position in Fig. 2 and from there pushed forward toward the cylinder or core 13 and moved up against stops10O on it to close the mold cavity all around. The metal is then introduced in the usual way through the nozzle, the water is turned on to cool the parts and then the back is moved back to the vertical dotted line position in Fig. 2. This motion leaves the strip 61 slightly separated from the core by the action of the springs on the rods 68. The movement of the back up to this position moves the saws which are constantly rotatmg over into the dotted line position in Fig. 18. Then the cylinder 13 is started to turn by the operation of the handle 30 and the closing of the clutch 26. The core rotates through exactly one-half a revolution when the roller 36 passes into the notch 37 and the rotation stops. The parts have now passed the position shown in Figs. 11 and 18. The saws have now out the casting into two plates, a riser and a waste piece, as indicated in Fig. 11, or into a single plate and riser, as in Fig. 15. If a single length plate has been cast, as shown in Fig. 13, then that is trimmed at the top and bottom. As this operation is finished, the back 18 moves again toward the core and the ejector fingers 66 and 67 mounted on the back move under the edges of the plates and separate them from the core, as shown in Figs. 12 and 19, or, of course, as shown in Fig. 16 if a double truck plate is cast. In the former case, the waste piece W drops down to the lower platform 71 which supports the lower curved plate while the upper platform 7 0 supports the upper plate. This upper platform 7 0 is removed if a donble truck plate is cast as shown in Fig. 16. The parts now come up to the position shown in Fig. 17, the saws moving away and another plate or set of plates being cast between the cylinder and back. As the back moves away from the casting, shown in Fig. 17, the fingers 66 and 67 swin back on their pivots when they touch the edge of the new casting. Of course, it will be understood that the matrix bars and clips are moved in and out in proper sequence in the manner indicated in connection with the last sheet of drawings before the mold is filled with metal.

\Vith this invention the capacity of the so-ealled Junior Autoplate machine is doubled without increasing either the labor or floor space required. The machine is also capable of use for three purposes as has been explained above. No complications are added in order to secure these results that will confuse any person who is familiar with the operation of the ordinary casting machines for curved plates. The delivery of the plates is greatly simplified and facilitated. They are left as delive ed on the delivery stands separated in sue a way that each one can be handled separately and either one can be removed before the other. The machine can be altered readily by removing the upper delivery mechanism and connected parts for the delivery of a single long plate as has been described. The manipulation of the back by sliding it away from the coreand-then tipping it over to provide for changing the matrix is also a feature of great convenience in the operation of the machine.

While a particular form of the invention has been illustrated and described it is to be understood that many modifications may be made therein by any person-skilled in the art without departing from the spirit of the invention as expressed in the claims.

Therefore I do not wish to be limited to the particular construction shown, but having fully described the invention and ascertained the manner in which the same is to be performed, what is claimed and sought to be secured by Letters Patent is 1. As an article of manufacture, a stereotype printing plate mold having means connected with the parts thereof for holdin two stereotype matrices and leaving a meta receiving space between their ends to permit casting two complete stereotype printing plates integrally connected end to end.

2. In a stereotype printing plate mold the combination with a single back having a transverse space on'the casting side, of means mounted in said space for independently clamping two separate matrices against the back.

3. In a curved stereotype printing plate mold, the combination with the mold parts forming a cavity for molten metal, and means mounted on one of said parts for holding a plurality of matrices arranged lon itudinally in alignment therein, of means or holding the edge of one matrix and preventing the metal flowing beyond it, whereby if desired a single plate can be cast in said mold. i

4. In a stereotype printing plate mold, the combination with a curved back having means for supporting and holding a plurality of separate and independent matrices, of means co-operatin with the back holding means and matrices for making a single integral doubletruck plate therefrom of double the size offan ordinary curved plate.

5. As an article of manufacture, a curved stereotype printing plate mold having means for holding a plurality of curved printing plate matricestherein for the simultaneous casting of a plurality of plates and having means whereby a multiple matrix can be supported in the same place so that a single plate can be cast of a size equal to a plurality of the first named plates. 0

6. In a casting mold, the combination with a back, and means in the back for clamping a plurality of matrices to the back by their neighboring adjacent edges, of a core co-operating with the back and matrices to produce a single casting therefrom.

7. The combination of a semi-cylindrical stereotype printing plate mold adapted for casting a plurality of semi-cylindrical printing plates end to end integrally connected in the mold, and means for holding a plurality of matrices in the mold one for each plate.

8. In a semi-cylindrical stereotype rinting plate mold, the combination wit the mold, of means for holding two matrlces 1n the mold in longitudinal alignment end to end but separated at their adjacent ends, and a semi-cylindrical ring on the convex s de of the matrix for holding the adjacent curved edges of the matrix.

9. In a casting device, the combinatlon with a, core and curved back, of a plurality of matrices supported in the back, and a strip supported adjacent to the core and adapted to enter the back when the mold is closed to clamp the adjacent ends of the matrices firmly against the back.

10. In a stereotype printing plate mold, the combination with a cylindrical core, of a segmental back adapted to co-operate to form a segmental moldcavity and adapted to carry two matrices, of a strip located substantially half way between the ends of the back and having flanges for holding the adjacent ends of the two matrices closely against the back to prevent the passage of metal behind them.

11. In a plate casting device, the combination with a core and segmental back, of a plurality of matrices supported in the back, and a strip supported adjacent to the core and adapted to enter the back when the mold is closed to clamp the adjacent ends of the matrices firmly against the back, said clamping strip being free from the back when the back is retracted and the cast plate is being delivered.

12. In a casting device, the combination with a core and segmental back, of a matrix supported in the hack,and a strip adapted to enter the back when the mold is closed to clamp the end of. the matrix firmly against the back, said clamping strip being free from the back when the back is retracted.

13. In a casting device, the combination with a core and segmental back, of a matrix supported in the back, a strip supported adjacent to the core and adapted to enter the back when the mold is closed to clamp th end of the matrix against the back, and means for yieldingly supporting said clamping strip in such position that when the back is closed against the core the strip will be forced by the motion of the back to a seat in the back and held to it by the springs.

ll. In a stereotype printing plate mold, the combination of a cylindrical core adapted to be turned on a stationary axis, and a segmental back movable in a straight line away from the core to open the mold, said back being arranged to receive two matrices in alignment with each other, said back having a space therein at a point between the two matrices. with a matrix clamping strip supported independently of the back and core, but located in position to be received in said space when the back moves up to casting position, said strip having means for holding the adjacent ends of the two matrices.

15. In a semi-cylindrical stereotype printing plate mold, the combination with the mold, of means for holding the straight edges of two matrices in the mold with their adjacent curved ends spaced from each other, said mold having a space around it between said ends of the matrices, and a filling piece for filling said space.

16. In a semi-eylimlrical steretoype printing plate mold, the combination with the mold, of means for holding two matrices in a single piece end to end in the mold, said mold having a space around it for a matrix clamping strip, and a plug in said space filling it at the back of said strip for backing it up and preventing its bending by the weight of the metal in the mold. 1

17. In a semi-cylindrical stereotype printing plate mold. the combination with the mold, of a single pouring sheet, and means for forming a single riser at the end of the mold cavity, of means beyond the end of the pourin sheet for casting a plurality of printing plates end to end, all fed from the same riser.

18. In a machine for casting two curved stereotype printing plates, the combination with means for holding two separate matrices inthe mold, whereby two plates can be cast at one casting operation connected by a slug of metal adapted to be removed from between the two plates in trimming their edges.

19. In a stereotype printing plate mold, the combination with a single back, of means mounted in connection therewith for holding two separate matrices therein, means whereby the cavity behind one matrix is fed with metal from the cavity behind the other, and means for stripping the matrices from the casting produced when the mold is opened. i

20. In a stereotype printing plate mold, the combination with the mold parts, of means whereby when the mold parts are separated a plurality of matrices will be strinned from a single casting produced in the mold comprising a clamping strip movable a. slight distance with one of said parls away from the cast plate.

21. In a stereotype plate casing mold, the combination with a core adapted to turn on a stationary axis for delivering the cast plate from the mold, with a back adapted to co-operate with the core, a track located transverse to the axis of the core, frames slidable on said track and supporting the back, whereby the back can be moved toward and from the core in a line transverse to the axis of the core, said back being pivoted on said frames, and a stop located in position to engage the end of the back after thc back has been moved a short distance away from the core, said frames being movable still further away to turn the back into inclined position.

22. In a stereotype plate casting mold, the combination with a core adapted to turn on a stationary axis for delivering the cast plate from the mold, of a back adapted to co-operate with the core, a track located transversely to the axis of the core, frames slid able on said track and pivotally supporting the back, a stop located in position to engage the end of the back after the back has been moved a short distance away from the core to turn the back into inclined position, and means for adjusting said track sideways to register the back with the core.

23. In a curved stereotype printing plate mold, the combination with a cylindrical core, of a segmental back for co-opcration therewith, and means for first sliding said back away from the core and then tilting it into inclined position and for moving it toward the core in the reverse order, said core having stops thereon for properly locating the back with respect to the core.

24. In a stereotype plate mold. the combination of a core adapted to turn to deliver the casting, with a segmental back, means for moving the back toward and from the core, a set of saws for operating on the cast ing while being swung out of the mold on the core, means controlled by the operation of said back for moving said saws into position for sawing into the casting when the back is moved to its open position, and means whereby when the back is movcd further away the saws will be kept in the same position.

25. The combination with a mold providcd with means for supporting a plurality of curved Stereotype plate matriccs and comprising a core rotatable on its own axis for delivering a plurality of integrally cast plates simultaneously therefrom, ot' a set of saws for sawing said plates apart. and mca ns whereby when said plates are delivered by the rotation of the core, the saws will cut through them as they swing through a hall revolution.

26. The combination with a machine for casting two curved stereotype printing plates connected together at a single casting operation, of a set of saws arranged to move together toward and from the casting device into a position to cut into the casting as 1t is ejected from the mold and cut the two plates apart.

27. The combination with a machine for casting two curved stereotype printing plates connected together at a single casting operation, of a set of saws arranged to move to gether toward and from the casting device into a position to cut into the casting as it is ejected from the mold and cut the two plates apart, and also cut a slug from between the tivd dates.

28, The com ination with a machine for casting 'two curved stereotype printing plates at a single casting operation, of a set of saws arranged to move together toward and from the casting device into a position to cut into the casting as it is ejected from the mold and cut the two plates apart, a nd also cut out a slug from between the two plates and bevel the adjacent edges of the plates, anda saw movable with said saws for cutting the riser from one of said plates and bevelling that edge of that plate.

29. The combination with a machine for casting two curved stereotype printing plates connected together, of a set of saws arranged to move together toward and from the casting device into a position to cut into the casting and cut the two plates apart, a saw movable with said saws for cutting the riser from one of said plates and bevelling that edge of that plate, a movable back, and means whereby when said back is moved away from the core to open the mold the saws will be moved into a position adjacent to the core for cutting into the casting as the casting is delivered.

30. The combination with a mold hav ng means for casting two stereotype print ng plates in one piece and means for separating said plates as the casting is delivered, of means for supporting said plates as they are separated comprising two stands each located in position to receive one of said plates upon it and support it as it is separated from the other and delivered from the mold.

31. The combination with a moldhaving means for casting two stereotype print ng plates in one piece, of means for se aratlng said plates as they are delivered mm the mold, and two stands each located in position to receive one of said plates upon it and support it as'it is separated from the other and delivered from the mold, both of said stands being located in horizontal position to hold I the plates upright on the curved edges of the plates.

32. The combination with a mold having means for casting two stereotype printing plates in one piece, of means for separating said plates as they are delivered from the .mold, and two stands each located in position to receive one of said plates upon it and support it as it is separated from the other and delivered from the mold, one of said stands being located at the bottom of the mold and the other between the bottom and top of the mold and both in horizontal position, and a matrix clamping strip movably mounted on the upper stand independently of the core and back and adapted to seat in the back as the back moves up to the core.

34. The combination with a rotatable core, and reciprocable segmental back having means for supporting two matrices therein, of means for moving said back toward and from the core, and yieldingly mounted fingers located on the back for engaging a plate previously ejected from the mold and push ing it away from the core.

35. The combination with a rotatable core, and a reciprocable segmental back having means for supporting two matrices therein, of means for moving said back toward and from the core, means for separating the casting into complete stereotype printing plates as it is delivered from the mold by the rotation of the core, means for-supporting each of said plates on its curved end edge, and yieldingly mounted fingers located on the back for engaging a plate previously ejected from the mold and located on the supporting means and pushing it away from the core when the mold is closed again.

36. The combination with a rotatable core, and a reciprocable segmental back having means for supporting two matrices therein, of means for moving said back toward andfrom-the core, means for separating the casting into two complete stereotype printing plates as it is delivered from the mold by the rotation of the core, means for supporting each of said plates on its curved end edge, and yielding ejecting fingers on the back adapted to engage the plates, those which come in contact with one of the plates being lon er than those which come into contact wit the other, whereby after the mold is opened and the casting delivered and cut in two, the closing of the mold again by the movement of the back up against the core will cause said separated plates to be moved from the core different distances on the supports.

37 The combination with a rotatable core, and a reciprocable segmental back, of means for moving said back toward and from the core, means for supporting the plate on its curved end edge, and yieldingly mounted fingers located on the back for engaging a plate previously ejected from the mold and locatec on the supporting means and pushing it away from the core when the mold is closed again.

38. As an article of manufacture, a curved stereotype printing plate having on the convex surface thereof two printing areas each 10 hearing the imprint of a separate full sized matrix, and separated by a smooth non-printing portion adapted to be cut away to separate the plates.

39. The combination with a semi-cylindri- 15 cal stereotype plate mold long enough to cast two ordinary plates, and two matrices therein arranged end to end, one curved end of the mold being higher than the other, of means for filling the mold from the higher end. 20 In testimony whereof I have hereunto affixed my signature.

HENRY A. WISE WOOD.

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