US1623991A - Casting device for segmental plates - Google Patents

Description

' 1,623,991 AFN 1927 H. A. w wooD CASTING DEVICE FOR SEGMENTALY PLATES Original Filed Oct, 11, 1919 4 Sheets-Sheet 1 A ril 1927.

P H A. w. WOOD CASTING DEVICE FOR SEGMENTAL PLATES Original Filed Oct. 11, 1919 4 Sheets-Sheet 2 div-Le r 1,623,991 APrll 1927' H. A. w. WOOD CASTING DEVICE F01 (SEGMENTAL PLATES dyi inal Filed Oct. 11, .1919 4 Sheets-Shet 5 V 2a 25 A- l I 1&4,

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April 12, 1927.

H. A. W. WOOD CASTING DEVICE FOR SEGMENTAL PLATES Original Filed Oct. 11, 1919 4 Sheets-Sheet 4 Patented Apr. 12 1927.

UNITED STATES HENRY A. WISE WOOD, OF NEW YORK, MACHINERY CORPORATION, OF NEW N. Y., ASSIGNOR TOTHE WOOD NEWSPAPER YORK, N. Y., A CORPORATION OF VIRGINIA.

CASTING DEVICE FOR SEC-MENTAL PLATES.

Application filed ember 11, 1919, Serial This invention relates to that type oit' casting devices which involve a segmental back and semi-cylindrical core between which a stereotype printing-plate is cast. More specifically it relates to that species of segmental plate casting machine in which the core made double. so far as I am aware the double core has always been made in the form of a cylinder adapted to be turned over for alternate casts.

The principle object of this invention is to modify this double core in such way as to permito't' pouring at the side and providing'a space for the sprue in contact with-a surface of the core member. Further objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanyingdr-awings in which Fig. 1 is an end elevation of a casting device made in accordance with this invention with the parts shown in full lines in position for casting and also showing them in o en position in dotted lines;

Fig. 2 is a side View from the direction of the arrow 2 in Fig. 1;

Fig. 3 is a plan as indicated by the arrow 3 in Fig. 2;

Fig. 4 is a central longitudinal sectional View showing the plate in position between the core andback before they are separated;

Fig. 5 is a transverse sectional View showing the position of the parts when the back is withdrawn and the core remains in casting position; v

Fig. 6 is a plan partly in section showing a modification; and

F ig. T is a central sectional View of the top of the same showing the core reversed and the end ring drawn back. I

The invention is illustrated as mounted on the usual frame 9 which is naturally employed and it is shown as involving the usual segmental back 10 movable from the full line to thedotted line position in Fig. 1, and back again by toggle l1 and operating arm 12. It is provided with the usualmati'ix-clips 13 for holding the matrix 14, the construct-ion and operation of these partsfbeing so well known that no detailed description is necessar \l ith this casting back I have provided a core member really consisting of three parts. These comprise two semi-cylindrical core elements 15 and'a central part 16.;for

31 I have provided No. 325x946. .Renewed December 27, 1920.

rigidly connecting the-two core elements '15 and spacing them apart. Each of the core elements has a semi-cylindrical castingarea as shown more fully in rig. 5 for forming the back of the cast'pla'te A which is cast against the matrix 14; when in place.

At the center of the whole structure is a shaft 17 on which is fixed a gearl8 operated by a gear 19 having an operatingh'andle 20 for turning it. The core member fcan be reversed by this means when "the back 10 is drawn down. v

The (forecasting areas are provided with small indentations2l into which the metal flows so that the cast plate will be held on the core member 15 as the latter is rotated. 'lhey are so weak however that they can be easily broken by. the simple'operation of lifting the plate off the c'ylinder by hand.

The casting ehd rings '22 as shown in Fig. 4 are pushed up to position by springs 23 against the ends of the core and can be moved back by hand levels 24 to permit the turning of the core. In this way they do not move with the core but stay in the back and the indentations 21, or some equivalent, are thus needed-to hold the plateion the core as it turns over.

A modified form is shown in Figs/t and 7 in which the semicircular end rii i-gs 25 turn with the core and plate. .In this case springs 26 mounted on bolts '27 carried by the co're yieldingly hold the end rings in position as the core turns over. Therejis a cam 28 onthe frame at the top which engages in a notch 29 in the end ring and pulls it back as shown in Fig. 7 to release the plate after the core is turned over nearly to its final position. N o indentations 21 are needed.

For the V purpose of introducing metal into the mold cavity from the pouring-pot spout a gate or hopper 32 pivotally mounted at'33 on a bracket 34secured to the side of the back 10. This gate can swing f'r'oni the full to the dotted line position in Fig. 1. When in the full line position itjfonns with the side oft'he central part 160i the core member, the sprue B of the casting as indicated in Fig. 5. It will be seen therefore that the separation of the two semicylindrical cores is provided laifgelyforthe piirpose of permitting of viding a space for this sp'rne so that the pouring can-be done from the side.

I have shown also a saw 40 mounted on a slide ll operated by a belt 42 passing over two pulleys 43 carried with the saw on the slide and two pulleys 44 mounted on stationary shafts. After the gate 32 is moved back to the dotted line position in Fig. 1 this slide is moved by operating the handle as and the saw cuts the sprue off the casting.

The operation has been practically described in referring to the elements of the drawings. The parts are located in the position shown in Fig. 1 for casting. WVhen the cast is made and set the back is drawn down and the gate 32 is drawn back as shown by dotted lines in Fig. 1. Then the power is turned on and the saw moved across to cut off the sprue B. Then the handle 20 is turned and the double core reversed, although if the form shown in Fig. 4: is used the two levers 24: have to be operated first. The plate is simply lifted off, fracturing the projections at 21. and the device is ready for the parts 10 and 32 to be moved back to the position shown in full lines in Fig. 1 against the core member for another casting.

This constitutes a very simple arrangement by which the plate can be cast from the side and is especially suitable for small plants.

Although I have illustrated and described only a single form of the invention I am aware of the fact that 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. The combination with a central member and a plurality of semi-cylindrical cores mounted rigidly on different sides thereof at a material distance apart, of a single semi-cylindrical back for casting printing plates adapted to co-operate with each of said cores, and means for moving said back radially toward and from the cores.

2. In a curved stereotype plate casting device, the combination with a curved back, of a double core comprising an element oblong in cross section having a rectangular central portion and two semi-cylindrical cores on opposite sides thereof for alternately co-operating with said back.

3. The combination with a semi-cylindrical printing plate casting back, and a longitudinal gate connected thereto for casting the sprue, of a core member having a plurality of cores for alternately entering the back, and means between the cores for constituting one wall of the sprue chamber.

4;. The combination with a casting back and a reversible core member having two casting areas each adapted to cooperate with said back to form a casting chamber, of a gate pivotally connected with the back and adapted to form a sprue chamber with one wall of the core member.

The combination with a printing plate casting back, and a reversible core member comprising a non-casting portion and a plurality of semi-cylindrical casting areas located on different sides thereof, and a gate at the side of the casting chamber, said casting areas being spaced apart sufficiently to provide a place between their side edges for receiving one side of the sprue.

6. A rotatable core member for use in casting segmental printing plates, said core member having two semi-cylindrical casting areas for two plates the axes of which are not in coincidence, said areas being provided with indentations for receiving metal and temporarily holding the cast plate in position while being reversed.

7. The combination with a casting back and a reversible core, of a gate connected with the back and adapted to form a sprue chamber with one wall of the core member.

8. In a casting box for use in casting segmental printing plates the combination of a reversible core provided with indentations for receiving metal and temporarily holding the cast plate in position while being reversed, with an end ring, and means for drawing the end ring back longitudinally.

In a casting box for casting segmental printing plates, the combination with a reversible core, of an end ring, and means for automatically drawing the end ring back longitudinally as the core nears its reversed position for delivery.

10. The combination with a back and a rotatable core for use in casting segmental printing plates, of an end ring, and means in the back for drawing the end ring back longitudinally before the core is moved from the back.

11. A stereotype plate casting machine for casting curved plates, including in com bination a double cylindroid core adapted to produce plates with extra length columns, and a drag cooperating therewith.

12. A stereotype plate casting machine including in combination a rotatable cylindroid core having a short and a long diameter adapted to produce plates with extra length columns, and a drag co-operating therewith.

13. A stereotype plate casting machine including in combination an approximately cylindrically shaped rotatable casting core having a long and a short diameter and adapted to produce plates with extra length columns, and a reciprocable concave casting member co-operating with the core centrally with respect to the long diameter of the core.

1%. A stereotype plate casting machine, adapted to produce plates with extra length o no columns, including in combination a core having a casting surface formed about an axis, the core extending at the sides past said axis, and a concave member forming therewith a casting chamber extending at the sides past the axis of said casting surface on the core.

15. A rotatable core for a stereotype plate casting machine, adapted to produce plates with extra length columns, having opposed cylindrical casting surfaces, each casting surface being formed about its own axis, the two axes being spaced apart slightly within the core, the axis of rotation of the core being between and in the common plane of the axes of the casting surfaces.

16. A stereotype plate casting machine,

7 adapted to produce plates with extra length columns, including in combination a rota-t able core having opposed cylindrical casting surfaces, each casting surface being formed about its own axis, the two axes being spaced apart slightly within the core, and a concave member co-operating' toform a casting chamber extending symmetrically about the core with respect to and past the axis of the casting surface on the core.

17. A stereotype plate casting machine, adapted to produce plates with extra length columns, including in combination a cylindroid core and a drag co-operating therewith, and means for pouring in the hot metal at a straight edge of the casting chamber with the diameter across the plate substantially in horizontal position.

18. A stereotype plate casting machine, adapted to produce plates with extra length columns, including in combination an approximately cylindrically shaped rotatable casting core having a long and a short diameter, and a reciprocable concave casting member co-operating with thecore centrally with respect to the long diameter of the core, and means for pouring in the hot metal at a straight edge of the casting chamber.

19. A stereotype plate casting machine, adapted to produce plates with extra length columns, including in combination a rotatable cylindroid core and a drag co-operating therewith, the core rotating about an axis different from that of the casting surface of the core.

20. A curved stereotype plate casting cylindroid core, adapted to produce plates with extra length columns, and means for imparting a half rotation to the core, about an axis difierent from that of the casting surface of the core, between successive casting operations to bring the cast plate to delivery position.

21. A stereotype plate casting machine, adapted to produce plates with extra length columns, including in combination a rotatable core having a cylindrical casting surface formed about an axis, the core rotating about an axis behind said axis of the casting surface, a member having a circular surface engaging with a cast plate, to hold it to the core, said circular plate-engaging surface being concentric with the axis of rotation of the core.

22. A stereotype plate casting machine, adapted to produce plates with extra length columns, including in combination a rotatable core having a cylindrical casting surface formed about an axis, the core rotating about an axis behind said axis of the casting surface, a concave member co-operating to form a casting chamber, and an end plate for the casting chamber, having a semi-circular flange projecting into the casting chamber with its convex side concentric with the axis of the casting surface to hold down the matrix, and. with its concave side concentric with the axis of rotation of the core, to hold the plate to the core as it is carried to delivery by the rotation of the core.

23. A stereotype plate casting machine including in combination a horizontally disposed core having two cylindrical casting surfaces formed about separate axes, the core having two longitudinally disposed approximately flat surfaces at the junctures of the two cylindrical surfaces, a co-operating concave casting member, and a pump nozzle discharging the hot metal at one of said flat surfaces of the core.

In testimony whereof I have hereunto affixed my signature.

HENRY A. WISE WOOD.

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