US1545047A

US1545047A - Stereotype-plate-casting machine

Info

Publication number: US1545047A
Application number: US445781A
Authority: US
Inventors: Evensen William
Original assignee: GOSS PRINTING PRESS CO Ltd
Current assignee: GOSS PRINTING PRESS Co; GOSS PRINTING PRESS CO Ltd
Priority date: 1921-02-17
Filing date: 1921-02-17
Publication date: 1925-07-07
Anticipated expiration: 1942-07-07

Description

July 7, 1925-.

' 1,545,047 w. EvENsEN STERBOTYPE PLATE CASTING IIACHINE Filed Feb. 17, 1921 -5 Sheets-Sheet 1 vJuly 1, 192s. .1,545,041`

W, EVENSEN STEREOTYP PLATE CASTING MACHINE 'Filed Feb-.'17, 1921 5 sheetssneet 2 July 7, 1925. 1,54504'7 w. EvENsEN STEREOTYPE PLATE CASTING MACHINE FIe'd Feb. 17, 1921 5 Sheets-Sheet 5 July 7, 1925. 1.545.041

wf EVENSEN STEREOTYPE PLATE CSTING MACHINE Filed Feb. 17. 1921 5 sheets-snaai 4.

July 7, 1925.

1,545,047 w. EvENsEN STEREOTYPE PLATE CASTING MACHINE Filed Feb. 17, 1921 5 Sheets-Sheet 5 I I? I I I .I I l I I I r I I I S I I I I I I fl I I I I I I e I Q I I I I Q l al I l I z I l I I I I I I I I D I l I I I I I I I I I I I I I I I I I I MAA hh.;

WMM I Af n l I I I I i I I I l I I I I I I I I I I I I l I I I I I I I I I I I I I I I I I I I I I I I l I I I I I I I I I I I" I I I I I: I

I I D I Patented July 7, 1925.

WILLIAM EVENSEN, I sarees@ ILLINQ-Is, ASSIGNQII e@ sass aIaII-ae ,IMSS

www?, AIQORPORAIIQN QI ILLINOIS- ,sIEIiEQIIIfI-PIAIE-GASIIIIG MACHINE Application file d February lhlgl. Serial Nja 41.153951.

To all who/it t may concer/1:

Be it Iknoivn Athat l, IVVILLIAM EvnNsnN, a citi-Zen of the United'States, residing at @hic-ago, inthe connty ot Cook and State of yIllinois-'have madecertain new and use- -ful:improvements `in 'StereotypeaPlateasting -li/lacliiiies, o" Iwhich lthe following Ais a specification. i

` AThe inventionrelates to stereotype plate casting machinesfand more-especially to improvenients in the casting n'iechanism proper, that is,the elements constitutingthe casting cham-ber andthe parts *cooperating therewith.

Objects and advantages ofthe `invention willibe setfforthinpart hereinafter and in part ivill loe obviousheretrom/Q or 'be learnedby practicewith the invention, Jthe sameheing realized and attained by means of `the instrnnientalities and combinations pointed out'in-tliefappended claims The invention consists inthe novel parts, constructions, arrangements, combinations and improvements iherein shoivn and described,-

The accompanying drawings, referred Vto herein and constituting .a partfliereoi,'illustrate one embodiment .ofthe invention, and together with .the description, serve :to eX- plain fthe principles of. the invention.

Of :the V`drawings I* A I'Fig.` l is ,an,cndelevatioin.with parts-vin vertical transverse section, of a casting machine embodyingl the vpresent Ainvention g FigrQ isa fragmentary, enlzjvrgeddetail, in transversesection, of the Acasting core, pump ,nozzle andthe drag, which are shoivn at the upper central part oi' Fig. -l,hnt showing Vthem in casting positionjust after' the plateihas'beenrcast;

Fig. 3 is an elevation of the casting' cyl'- inder or core,-lo.oling,thereatffrom tlileilei't in VFignfla'nd Vfrom the bottom in Fig. fl, the partsat the` right of the figureloeingf shown in vertical central Section;

xliig. iris adetacliedidetail, in top plan, ofthe'castingicorea the .matrix holding clips and associated parts,-looking at-Figs. 2 and 3 lfrom tlieitop;` i i F ig. 5 is a perspective of the end ring of the casting chamber, showing especially the `guide and shoulder for the plate,'vvh en it is being rotated from casting to 'discharge Pstin.; .V ,i g yig. Gis` a fragmentary detail in front elevation of the.pumpnozzle; Y u

-7 is'a" "fiagnieiitarytop plan corresponding teilig'. 8; and A i Fig. V'8 is a transverse section online'lw o'IFigsf and-7. 'i A' YIn casting` l'hemi-cylindrical stereotype plates for rotary printing presses, itis clustomary tohave -the cylinder or core of the casting machine. off vsliglitlyless diameter than the'iorm or plate cylinder of the printing press, so that the stereotype plate` ivlien pnt' on the press Will spring` `over the plate cylinder and hold tightlylto tlievcylinder. Fnrthermore, in practical Worl\,;in"inaling up the formsjcomposed usually or mostly of'linotype slugs, thecolumns as made up are frequently :over-length. By Way of ein ample,'in a page havingcolumns of twenty inches standard lelngtli, the lpages as actually made up, andthe n'iatrix'sheets made therefrom, Will have Ithe columns running to twenty" andlive-eighths inches long; also, the standard twenty-one inches column pages will often run to 4about tvventyfone and three-quarterinches in length, ,asrivillv also the twenty-tivo yinch column pages.

The foregoing is a practical example of the application of the invention under the presentpractice of casting plates' Withthe columns entending aronnd the press cylinders. The -invention is also applicable to produce eXtra long plates set in pages Withoutcolumns. Also, if the columns run along the cylinderf the invention ivill produce columns o'f'extra Width, or an eXtra column ontl1eplateas the case maybe. The'in'- vention provides afuovel relation of the plate tothe casting mechanism, andA the reierencein the description .and claims to a fui plate with extra length columns will be understood, as expressing the present most practical application of the invention.

By reason of the over length of the pages, and by reason of the relative smallness of the casting core, and also with the risers at each end of a plate in a machine where the metal is poured at a straight edge of the casting chamber, it is frequently found that the plate will extend about the casting core for an appreciable distance more than a semi-circumference of the core. In such case, the plate is sprung in removing it from the casting core, and consequently will not lit. tightly on the press cylinder. Also, the casting machines as ordinarily built are either unable or not well adapted to casting plates of such eXtra column length.

According to the present invention, the core of the casting machine is composed of two heini-cylindrical parts, with their axes parallel but slightly separated from one another, the core, however, rotating about an axis in the common plane of, parallel to, and equally distant from, the axes of the two heini-cylindrical parts of the casting core. The exterior of the core is a continuous surface, so that the core may present a casting surface at the casting chamber and a cast plate at delivery position by a half rotation of the core for each casting op* eration.

By way of example, with columns of the length already stated as being in common practical use, to provide for the extra length required, the axes of the heini-cylinders would be about iiveeighths of an inch apart. lVith a casting core so constructed and with the exemplary dimensions given, which as stated are those or some of those frequently found in newspaper press rooms, the stereotype plate will extend very little, probably about only one-half inch over the center of the core, which with the construction described permits the overlength plates to be cast and avoids injurious springing of the plates in removing them perpendicularly away from the core.

Referring now in detail'the embodiment of the invention illustrated by way of eX- ample in the accompanying drawings, the invention is shown applied to a stereotype plate casting machine having a horizontally disposed, rotatable core, with the concave casting member located beneath the core and reciprocable upwardly to, and downwardly away from, casting position. The core makes a half rotation, to bring a cast plate to its top side preparatory to delivery thereof, and to present the other casting surface at the bottom side of the core, ready for casting` the hot meta-l being poured at one of the straight edges of the casting chamber. Such a machine may be of the general form shown in applications Ser.v No.

407,984 and Ser. No. 407,985 of Joseph J. lValser liled Sept. 3, 1920, and is illustrated in Fig. 1 of the present drawings.

As the present invention relates to the casting mechanism, only an end view of the entire machine is shown (Fig. 1), illustrating the general form and arrangement of a casting mechanism of the kind already described, although it will be understood that in many of its features, the invention is applicable to casting machines of other forms and constructions. y

As so embodied, the machine comprises a casting core 1 having a shaft or

pintles

2 and 3 projecting from the ends thereof, and journaled, as usual in the machine frame. Cooperating with the core 1 is a concave or drag member 10, these two constituting the main elements of the casting chamber. In the embodied form, the casting core 1 makes L half rotation for each castingr operation, the core carrying the plate with it from casting to delivery position, and the concave 10 is located on the under side of the horizontally-disposed casting core and reciprocates vertically up to, and downwardly away from, the casting position.

Suitable matrix-stripping devices are provided for stripping the matrix from the cast plate m as the member 10 recedes from the casting position, and these may be automatically spring operated, and may be of the general form shown and described in application Ser. No. 408,203 of Albert A. Henzi, filed Sept. 11, 1920. The matrix clamps are shown in the matriny stripping position in Fig. 1 and are shown in casting position in Fig. 2, and need not be described in detail.

Suitable mechanism is provided for imparting the periodic or successive half rotations to the core 1, and this mechanism may be of the forin shown in the lValser application referred to, and certain parts thereof are indicated by reference numeral 11 in Fig. 1 of the present drawing. This mechanism is driven from a generalr driving and cam shaft 12. The drag or concave 10 may be reciprocated to and from casting position in any suitable manner, and as shown, is provided with guideways 13 and 14, running on guides formed in the machine frame 15. Mounted on the underside of the drag 10, and centrally thereof, are longitudinally spaced-apart cam rollers 16, which cooperate with cams 17. Cams 17 are mounted upon and rotate with the shaft 12 to impart the described movement to the concave casting member 10. V

In Fig. 2 of the drawings is shown in detail the present preferred embodiment of the casting core or cylinder. The casting core has two opposed casting faces, each formed about its own anis, the two axes being spaced apart ,-whereby the core somewhat longer on the diameter passing through the centers of the twocastingk faces than on the diameter whichl is perpendicular to* said rst-inen;

tioned diameter. Thecore presents a coni tinuous'external surface, having two coinparatively or substantially flat areas, one at' each side, between the'semi-cylindrical surfaces just described. The core rotate'sabo'ut an-'axis located between and in' the *connnon plane of the respective axes of the two semi# cylindrical casting parts already described.

'iis embodied, and consideringthe ycorevn the position shown in Fig. 2, the upper cy#- lindrical portion of the corel is castor Inachined, or otherwise linislred, about' an aXisj theidistances"25+26, 2524 and 25l+28` advantages' of the machine in taking oare of extra-long plates when this is found'to be necessary or' desirable.

The other heini-cylindricalA parto'il the`- core has its axis at' 29,"v they distances Ztl- '30,-

31 andZl-S-Z being radii of the'henii-- cylinder, the seinicircurnlierence thereoffbef-- ing represented by the line S'lS-O-BZ. This represents'A the ot'herpla'te castingY surface,

or rather thegreater part thereof, the plate' extel'iding past at either of its horizontal sides in the manner already explained in connection'with the other casting surface.

The central section oi the coreinayA be4 regarded theoretically as af'rectangula-r solid block interposed between' the two equal heini-cylinders to space theni'apart along one diatneter thereoi'l while leaving the difarnet-er perpendicular to ysaid irstlnientioned diameter unchanged. Thisconstruction may be convenientlystyled'theoretically a cylin droid, although in a practical embodiment 'it' may not be precisely ot; that forni. In

Fig. 2 the linesY 2T-Sil and 28-32 may b e straight or substantially straight,.and the corresponding areas along the cylinder?, may be d dat orapproximate-ly, or substantially dat;

The' core rotates about an aXis disposed longitudinallyvv thereof at the centralpoint ofil its long diameter ordimension, represent edby'the line 26-30 inlig. 2,' whichwould be an axis parallel to the axes 25 and. 29* and lying n'ndway` between thein, and in their rornin'onpiane.` lt willibe understood that in actual practice there niay notrbe strict conformity to the geometricall termsl and constructionv` although such a description' isdeeinedbest adapted to explain-the principle of the invention.

As stated, the cast platerc is carried troni the casting position todelivery position by; Toward the.

the'h'alf rotation-ot-the corel.

close of this inoiffelnent of the core, as shown in Fig. 1,' the leading'straight edgev of' the plate a' strikes a stop 39, and at the'saine time a traveling stop or pusher l0, mounted in guideways oi" a pivoted' connecting rodI Ai2`tln'ough a cani and lever mechanism (not s'lio\vn)ltioni the shaft l2, enters beneath the rear or following straight edge of the plate ze and then liits the plate upwardly lironi the cylinder l to the position shown in Fig.r l, ready for delivery. J ust prio-rto the'haltrotation oi' the casting core l, the concave l0 begins its downward movement, the n'iatrixy 'being strippedironi the plate as shown in Fig. l.A

T he concave l0 then nioves baokand just after the core l has come to-rest itis back in casting position'. It it is desired to change the matrix sheet g/this can be donewhen the concave l0 is in recedent position.

Suitable end plates, or end rings asthey are' usually called, .are provided to forni or liniit the senil-circular ends oi the casting chamber, andatthe the removal of the cast plate from the casting position with -a rotating core of the form described, and providing` also for the delivery of the plate `bylifting it slightly ironi the core and then moving it away in a direction longitudinal of Ithe' core.

its embodied, at what may be conveniently termed the oi'ltsid'e end of the plate (Figs. 3 and et), an end plate 50 is provided of, er approximately of, semi-circular iorn'i, mounted independently of the rotating cyl# inder, and bearing against the lower half of the ila-t end of the core l, the outer periphery 5i of said end plate bea-ring against thedrag.

or concave lO'and the inner flat face 5210i the end plate bearing against the flat side or endet' the core cylinder l. rlhe ring thus constitutes a closure 'tor this end of the castingchaniber and always remains in operative position at the casting:chamberr` as it does not rotate with the core.

The end pla-te 50, in addition to clos-ing that` endfoif the casting chamber 'and holding down the curved end of the niatrix sheet y, is also designed and intended to hold the platem in position on the core l during thel rotation oi' the core, as thefplate is thereby carried upwardly to delivery position on the top side or just above the core. Due to the factthat the cast stereotype plate a' during the rotation of the core is not moving aboutits own axis 29, but is-ino-ving about the axis oi' rotation 33 of the core, the ceni tral part oft the plate follows apath lying outside. ot' the circumference ot the plate :a when in casting position.

For the purpose indicated. and in view ot' the described movement of the plate, the endplate 50i' (Figs. 8 and 5) is provided with a projection or- Flange 53. extending from the dat side oi the endV plateinto the and reciprocated by means`| same time providing for lill) lill casting chamber just over the end of the matrix y, and formed and proportioned so as to form a shoulder in the curved end of the plate c as shown in Fig. 3. This flange 53 is thickest at the lowermost pointA of the core, that is, at the central point of the curved or arcuate end of the casting chamber, and decreases in thickness outwardly towards the ends of the ring 50. as shown in Fig. In other words, the outer curved or peripheral face of flange 53 is concentric with the center 29 of the casting surface of the core and of the concave 10, while the inner curved or peripheral face of the ring, along which the corresponding shoulder in the stereotype plate slides during the rotation of the core, is a semi-circumference; or approximately a semi-circumference concentric with the axis 33 (which it will be recalled is the axis cf rotation of the core) thereby providing a continuous. true bearing surface for the central point of the shoulder on the plate m until the plate is about half way through its rotational movement with the core 1.

ln the embodied form of mounting, the ring 50 is mounted upon the machine frame and is spring-pressed against the flat end of the core 1. As embodied. it is provided with a pluralityT of recesses, preferably three in number, into which project pins 60, which support the end plate in its general position but permit sufficient movement thereof to insure tight closing of the end of the casting chamber. Mounted upon the machine frame 61 is a semi-circular hub or flange 62. fitting closely around and back of the ring 50. The pins have enlarged screw-threaded outer portions which are screwed into threaded sockets 65 in the machine frame 615 the pins 60 projectingtherefrom through apertures or recesses in the frame and through corresponding recesses or apertures 6 4 in the hub or flange 62. Nested within the aper-V tures 64 andV coiled about the pins 60 are springs 66, which press against the outer flat. side of the ring 50. and press it lirmly against the Hat end of the core 1.

The cooperating mechanism at the opposite end of the casting chamber, as embodiech comprises an en d ring, or preferably two segmental and approximately semi-circular end plates, with their ends somewhat separated, mounted opposite each other upon the same end of the core 1. The two end plates are independently adjustable longitudinally of the core 1, to provide allowance or adjustment for matrix sheets and pages of different width. As embodied.y for the lower half of the core as shown in Fig. 3 an end plate or ring is mounted upon the cylindrical exterior and at one end of the cylinder or core 1, having a somewhat undercut or bevel annular front wall 71 for giving proper form to the adjacent end of the plate.

The ring or end plate 70 is made adjustable longitudinally of the cylinder, and for this purpose it is attached to the cylinder by screw bolts 75, passing throughV elongated slots or openings 72 in the end plate 70, the heads of the screw bolts being countersunk in the plate 70. rllhe longitudinally-disposed slots T2 permit of adjustment of the end ring 7() longitudinally of the cylinder to accommodate matrix sheets of different widths corresponding to different page widths of the form. The outer cylindrical face or periphery 7 3 of the ring presses closely against the inner surface of the concave 10 when the latter is at casting position, to close that end of the casting chamber, and the ring is slightly undercut at 7 4 to clamp and protect the end of the matrix sheet y, in a Well known manner. The corresponding end ring or plate 70 upon the other half or casting surface of the core 1 may be similar in form and construction, and need not be described in detail.

It will be noted from the foregoing that at its delivery end7 that is the end at which or toward which the plate is delivered longitudinally of the cylinder into the trimming mechanism, the end plate or ring 50 is always at the casting position, and the cylinder or core 1 is free from any rejection at that end. Thus but a very slig t raising of the stereotype plate fr; away from the cylinder or core 1 is essential before starting the longitudinal movement of the plate parallel to the cylinder and toward the trimming mechanism or other place of delivery as the case may be.

The relation of the matrix holding and stripping clamps to the foregoing mechanism is clearly shown in Figs. 2 and 4. The inner jawV 78 is provided with lugs 79, rotatably mounted upon a shaft 80, which is carried upon brackets 81, formed upon the frame of the drag or concave 10. A suitable helical spring 82 is coiled about the shaft and impels the clamps into the matrix stripping position of Fig. 1. The cooperating matrix clamping jaw 83 is slidable on the top of the jaw 78 to grasp and to release the matrix y, and is held in matrix-clamping position by suitable means, such as clamping bolts 84, although in actual practice some more quickly-operating device is usually employed. The faces 85 of the clamp constitute a closure for the straight edges of the casting chamber, and will also lit tightly over the straight ends of the end plates or rings 50 and 70. This action is possible with respect to the plates 7() by reason of the spacing between the ends of the two plates circumferentially about the cylinder.

The embodied form of means for supplying the'hot stereotype metal to the casting chamber and devices cooperating therewith,

Sil

Uil

together rtv-iththe novel devices-for increasing their efficiency, comprise a pump of suitable form and a furnace or other means for maintaining` .a supply of hot metal. So far as concerns the present invention, the general features thereof may be of any suitable ornconvenient form. As herein shown they are of the general form illustrated and described in the lvalser `application Ser. No. 407,985, .tiled September 3, 1920, already referred to. vThe meltingpot -`or furnace is indicated. in thel present drawings by l and the `pump by 91, the `pump being,` automatically operatedfby .means .of a pivoted conneci'sinp,- rod 92, a lever93, a rod 94 and a lever 95, from a cam 96.

Referring non7 in detail to the features of they present embodiment, :which .relatel to this particular mechanism (Figs. 1, 2, 6, 7 and 8),.'the ',topfmatrizr clamp 83, on the pump side ofthe machine, is provided with a narrcmelongated slot 97, through Which the hot metal is poured into the casting chamber. lAbout the edge of slot'9? there is providedY a beaded edge, or -itted `bearing surface`98,which surrounds the slot and is adapted-to cooperate With a bead, or .litted bearing surface, on the pump nozzle (Eig. 2), of.corresponding shape and size. The details of thek pump` nozzle are shown in Figs. 16, 7 and 8. The pump vnozzle has its orifice or-.throatlO of narrow, elongated shapeto correspond to the slot 97 ,inthe matrix clamp, the hot metal flowing through `from the interior 105 of the nozzle and through the slot 97 into the casting chamber.

Formedioni-the underside of the nozzle-99 is acooperating1 beadorjlitted bearing surface 100, Which is, as stated, of thesameior correspendingy form and dimensions as the bead 98 on-the clamp, so that when the nozzle is atcasting position, `thebeads 98 and 100 are in registry and close contactwith each other. as shownin Figz. Formed, also on the upper vface of the clampf83 is a bead orffitted bearing surface 101, and a bead or fitted bearing surface .102 cooperating therewith is formed on the underside of the pump nozzle 99, these tivo beadsregistering and engaging together during` the metal pumping action throughout the entire Width of the nozzle to steady and v.hold the pump in ,position and to keep the matrixclamp in proper alinement.

':Formed also upon ythe upper front-face of thenozzle is a like bead, or `fitted surface, 103, which is shaped to fitl closely andtruly against the side of the core, as shown in Figu. This bead extends for the Whole Width of the nozzle orifice or throat and then downwardly along both sides of ythe orifice, as `shown in` Fig. .2, making a ,tight closure around the sides and top off-the ythroat against ythe surface of the corel. The lower lip of the orifice is cut away or recessedinwardly .as shown A`at 101110 rpermit the flowing `.hot metal, Which isfforced throughthe interior .of the pump'nozzle to oiv .down into thecastinglchamber. i

One of the advantages iof the'castmg ocre of hthe lpresent invention isthatitfavoids,0r remedies the objection ,or 1diszulv antage,lof too `greatJ1 an averliangl from 'the `ends ,efjthe arcuate .ribs .on ythe .back of. the .stereotype plate to theadjacent straightdgeof the plate. rlfliis,,overle-ng.in the usualfrom ogf plate .is especiallylong when tliemollnnlns are somewhat overlength, `as V,already eX- plained. `The longxover. hang .is ,objectionable `and detrimental for ythe reason 'that vthe unsupported `area .betweentheends *of the ribs andthe straightedge fofthe plate will spring` when mounted .on .thepr,es s. and iinpair theprinting thatl p art of, thex plate.

The length rof :the .ribs is ,governed by. .the location `of thepump noz'j/ile.or mouth .upon (i1-.against theside of therastingeore. wThe nozzle should be clearof the rib-.termingerecesses ofathe topHhalf/of.thecore ilhe additional space provided .in the central 0f the surface` Aof `the core, .when .fthe'castingl positionpermitsthe ribfforI/ning recesses to be lengthened by ,a Ilike,amount or ,dis tance, andthus additional llength off-the, yribs 110I brings, their ends .Within effective 5 porting. distance ofthe ystraightedges of the plate ce, .even .when .the vplate 1isof tsufcient/size to accommodate-,the .extra-length columns. V e I l ln the yoperation. ofthe machine, .When-the stereotype plate .is lifted vertically 4.from the core at delivery ,.pcsition, i asnalreadyidescribed and ,as shown ,inlfi 1, Wi th ,thex end rings on the core of -theform described and shown, the stereotypmplate x -will move slightly endivise during the lifting-moyement .so .that ,its edge will ,come out from under the. bevelededge .of theendv ringl vor plateO, theribfforming recessesllO inthe ccrrehaving` ia .greater angle than the beveled edge 71ofmtheend ring 70thusavoiding any tendency to alockingaction during ,the lifting of the stereotype plate.

From all the foregoing it willjbe understood that a mechanism has been .provided which realizes the objects and advantages fsetforth, together with otherobjectsand advantages. :It will` also be understoodqthat rthe invention inl its broader aspects isnot limited -to -the specific mechanisms .shown and described ,but departures may be made .therefrom Within ythe scope of `the accom- 'panying claims Without f deliiarting :from xthe principles ofthe invention andnfithout sacrificing fits chief advantages.

What l claim is:

1. A stereotype plate` casting,` machine, adapted to `produce plates with extra length columns, including in combination a lcore havinga casting surface formed about an les 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.

2. A stereotype plate casting machine, adapted to produce plates with extra 'length columns, including in combination a rotatable 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 cooperating to form a'casting chamber extending symmetrically7 about the core with respect to and past the axis of the casting surface on the core.

3. A stereotype plate casting machine. adapted to produce plates with extra length columns, including in combination a core having a casting surface formed about an axis, the core extending at the sides past said axis, a concave member forming therewith a casting chamber extending at the sides past the axis of Said casting surface on the core, andV means for pouring in the hot metal at a'straight edge ofthe casting chamber.

4:. A stereotype plate casting machine,

adapted to produce plates with ext-ra length columns, including` in combination a rotatable 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, a concave member cooperating to form a casting chamber extending symmetrically about the core with respect to and past the axis of the casting surface on the core, and means for pouring in the hot metal at av straight edge ofthe casting chamber.

5. A stereotype plate castingV machine, adapted to produce plates with extra length columns, including in combination a core having a cylindrical casting surface formed about an axis, the casting surface extending lbackwardly past the axis, a concave member cooperating to form a casting chamber, and means for pouring in the hot metal at a straight edge of the casting chamber and back of said axis. Y

6. A stereotype plate casting machine, adapted'yto produce plates with extra length columns, including in combination a core having two cylindrical casting surfaces, each formed about its own axis, these axes being spaced apart, a concave member forming a casting chamber extending back of the axis of the casting surface at casting position, and means for pouring hot metal into the casting chamber back of said axis.

7. 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 withthe axis of rotation of the core.

8. 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 cooperating to form a casting chamber, and an end plate for the casting chamber, 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.

9. A stereotype plate casting machine, adapted to produce plates with extra length columns, including in combination a rotatable core having two cylindrical casting surfaces, each formed about an axis, the axes being'spaced apart, the core rotating about an axis between and in the common plane of the first-mentioned axes, a concave castin member `cooperating successively with sai casting surfaces of the core, and an end plate for the casting chamber having a circular surface engaging a cast plate to hold it to the core, said circular plate-engagin surface being concentric with the axis 0 rotation of the core. l

l0. A stereotype plate casting machine adapted tov 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 cooperating to form av 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 ma.- trix, 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.

l1. A stereotype plate casting machine in cluding in combination a horizontally disposed core having two cylindrical casting surfaces formed about separate axes, the core having two longitudinally disposed approximately fiat surfaces at the junctures of the two cylindrical surfaces, a cooperating concave casting member, and a pump with a nozzle discharging the hot metal at one of said flat surfaces of the core.

12. A stereotype plate casting machine including in combination a horizontally disposed core having two cylindrical casting `surfaces formed about separate axes, the

eeie having two longitudinally disposed approximately flat surfaces ai the junetuies of the two eylindiieal surfaces, a cooperating concave casting member, and a pump with a nozzle pressing against and discharging Jche hot metal at one of said flat surfaces of J[he core.

13. In a stereotype pla-te Casting inaehine, a core in the shape of a cylindioicl, and an end plate having a crescent` shaped flange, l0 Coopeifatine,` therewith.

A. In a stereotype plate casting machine, a eoi'e in the shape of a eylindioicl, and a spi'iiign'essed encl plate having a crescent shaped flange, cooperating therewith. 1f

ln testimony whereof, l have signed by naine to this specification,

WILLIAM EVENSEN.