US1117151A - Apparatus for the manufacture of curved stereotype-plates. - Google Patents

Description

R. C, ANNAND. APPARATUS FOR THE MANUFACTURE OF GURVED STEREOTYPE PLATES. APPLICATION FILED JUNE 11,1912.

1 ,1 17, 1 51 Patented N0v.17,1914

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' LL 0. ANNAND.

APPARATUS FOR THE MANUFACTURE OF GURVED STEREOTYPE PLATES. APPLICATION FILED JUNE 11, 1913.

Patented Nov. 17, 1914.

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R. G. ANNAND. APPARATUS FOR THE MANUFACTURE OF OURVED STEREOTYPE PLATES.

APPLICATION FILED mm. 11, 1913. 1 ,1 1% 1 51 a Patented Nov. 17, 1914.

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To all whom it may concern: I

Be it known that I, Roman-r Cnummc An NAND, of Cornwallis street, South Shields, in thecount of Durham, England, have in- Vented certain new and useful Im rovements in Apparatus for the Mann acture of Curved S-tereotype Pfates, of which the following is a specification. i This invention relates to apparatus or machines for the manui acture'of curved stereo- X employedwhich .is expandedto the required "circular form previous to the casting of the plate from a matrix secured in a curved casting back and is afterward collapsed or bent inward together with the east plate, to enable the curved plate to'be stripped by the core from the matrix without injury to the ..ldtter. .16 The invention relates more particularly to curved stereotype plate making machines of the type described in the specification of pre- United States Letters Patent granted to meNo. 887373 dated 12 May 1908, namely,

type plates, wherein a collapsible core is i I -t1on the co'l'a'p'smg of. the resilient core is v is wherein the plates are cast with the aid of such a core in a curved casting back which reciiprocates together with'a borin shell into s tions in which the casting bac and bormg shell are alternately in position opposite- 86 to the core which is collapsed and operated to bend the plate slightly, strip it from the matrix and raise it out of the casting back,

' and then descends and deposits the plate inthe boring shell when this has moved into position opposite the core, the boring-shell then carrying the plate to mechanism for boring or boring and finishing the same while the casting back returns to position for cooperation with the core to cast another plate. -Accordin to the present invention, instead, of ma 'ng the colla sible core of separate plates hinged toget er, I construct it as a continuous or non-hinged'element possessing sufiicient resiliency to permit of the small amount of flexing required for bending the cast plate inward and stripping it- I from the matrix. I also provideimproved means for cooling this core,',thy. arranging for water or cooling liquid to ow throu h j the hollow interior of a member carried yor attached to the top of the core proper and! forming the front of the pouring gate, and

' also through, a narrow space or chamber pro- .v

' B5 vided betweenthe resilient core and an innerwall or backing arranged to flex therewith in a i'ever actuated by the said cam, the said Specification mun ream. ,PatentedNov. 17,1914. Application aim Iune 11, ms. Serial in. 718,144.

bend' operation. The cooling liquid as 'preferab y admitted at one.end of the member formmg the front of 'the ouring' gate (hereinafter called the gate. rout) and led from the other end thereofto. a chin 'nel extending across the inner' fac'ei of the core and openingint-o top of the space between the core and backing, so that it spreads through the space between same .and is led oif at'the bottom of this spa'ce.-,

Accordin to "a further part of the-invenmedium of links or memliers connected to said rocking levers and to: shaft rocked by I rocking ."levers' and rocking shaft being mounted in the rocking 'frames that serve 1 for moving the core into and out of the castmgback.

' he accompanying drawings represent by" way of exam le the application of the improvements o the present invention to almachine of the general character described in my said rio'r Patent No. 887,373, only-so much of t ema'chinebeingshownasis necessary-to enable the invention to be understood.

Figure 1 is a plan 0 fthe casting back and core with the mechanism for expanding and collapsing the core. Fig. 2' is 9. correspondmg end view. Fig.3 is a section .-through the casting back and core. Fig. 4 is a detail end view of the casting back and matrix clamping means. Fig. 5 is a 1 plan view thereof. Fig. 6 is a fragmentary view looking along the arrow A Fig. 5'. Fig.7 is 'a diagrammatic view of the cam mechanism for controlling the movements of the stopper bar that closes the bottom of the castin mold. Y

' he core pro r consists of a curved plate 1 of steel, say :1 out i thick and of suficient extent circumfeientially to enable the core to be'fixed conveniently. Inside the plate 1. a lining plate '2 of steel or brass is o'fitted' so as to leave a narrow space 3, say-1" in width, for the flow of cooling water between the two .plates.

The top and bottom edges of the lining plate 2 are flanged upat 2 2 to abut agaiad; hollow castings 4, 4, extending core and formed with water channels 4, 4', u

and the water space 3, which communicates lengths no i with the channeled 4 for the length of the core, is closed at top, bottom and sides by packing material 26 (e. g. engine packing) fitted between the plates 1 and 2, the whole being secured firmly together in a watertight manner by means of bolts and nuts 5 atdintervals all around the top,, bottom and si es.

On top of the core is bolted or otherwise fixed a casting 6 forming the pouring gate front and containing a channel 7 extending for the length of the pouring gate 7*. A flexible pipe 8 admits cooling water to one end of the channel 7. From the other end of the channel 7 the water passes by a flexible pipe 8 to the top channel 4: inside the core. The cooling water thus spreads through the shallow water space 3 and into the bottom channel 1 from which .it passes away by a pipe 10. The'pipe 8 may conveniently admit the water to the top channel i at a point toward the middle of the length of the core. The back of the pouring gate is likewise cooled by a current of watersupplied to the hollow gate back 11 which in the example shown-likewise forms the clamping gripper for the top of the matrix secured in the. casting back, and for thispurpose is arranged to pivot on trunnions 12 in the top of the casting back 13. The casting back 13 re-,

ciprocates together with the boring shell (not shown) on a slide is in the manner described in'my said previous patent, as will be understood without further explanation.

15 represents the bottom gripper for clamping' the lower edge of the. matrix in the casting box, and the sides of the matrix are also clamped by loose side gages in the manner described in my said previous patent. Figs. 4, -5 and 6 illustrate such means for clamping the matrix. 150, 150 are the loose side gages disposed in, the

. casting. back 13, these being adapted to overmeans of, a projecting edge lap the matrix at the sides and being inserted in the back 13 by a seini-circular feather 151 with which they are each formed, said feathers fitting in grooves in the shell and preventing the side gages from slipping-out when released. The top and bottom edges of the matrix areclamped by the rocking gri pers 11 and 15 mounted respectively on t e spindles12 and 152 con .trolled by hand levers 12? and 152 capable of being locked in the matrix clamping o- 'sition by spring lungers v12 152 adapted to engage insuita ly positioned holes in the back '18. The topgripper 11 also serves to-clain'p thelside gages 150 and hence the side edges of the thicknessaas the matrix; formed on the p dge of. each side fgage end which therefore abutsagainatthetep gm perwhen as same P expanding the core and mounted on matrix in position, by'.

153 of the same a clampingpQsitMn. The

lower ends of the grooves in the back 13 for the feathers 151 are undercut as indicated at 15-1 and the feathers are shaped to correspond, and by this means. together'with the gripping of theprojecting edges. 153 the side gages are prevented from. springing in with the cast plate when the core is collapsed.

16 is a stopper bar for closing the cast ing space 27 during the casting operation. The bar16 also acts against the lower edge of the cast plate to strip the plate from the core into the boring shell when the boring shell comes opposite to the core, this stopper bar being rocked into and out of its operative positions by cam gear in a manner similar to that described in my said previous patent, by cam gear illustrated in Fig. 7, which shows one of the pair of cams, forked'levers and rocking arms whereby this motion is imparted to the stopper bar. The stopper bar 16 is secured to the pair of rocking arms 155 to which are linked 'forked levers.l56 the forks of which slide on the". cam shaft 157 of the machine. The levers 156 carry rollers 156 working in the grooves 1580f the cams 159 on the cam shaft 157. Fig. 7 shows only one of the said. cams, forked levers and rocking arms, it being understood that' there is a pair of eachbf these mounted parallel to each other.

17, 17- are two 'frames'inounted to rock aboutstud shafts 18 carried in the machine framing, for the purpose of swinging the core into and out-of the casting box and boring bed at the required time. These rocking levers are actuated by means of suit able cams (not shown) in a manner similar cation.

' 28, 28 are upper and lower rocking levers mounted on studs '29, 29 in the rocking frames 17, 17 v at each side or the core, and pivotally connected at their inner ends to the core as at30, 30 at suitable points to enable the core to be properly collapsed and levers 28, 28, are

c that described in the previous specifiare shaft 22 mounted in the rocking frames" v On'the shaft 22 is keyed a lever 23 carry-" ing a, cam roller 24 working in the groove,

25 of a ca n 25 serving for collapsing and the cam shaft 31 of the machine. I

lhe cycle of operation of the. machine illustrated is similar to that described in the specification of the previous patent and it-is therefore not necessary to describe it fully in detail.

ing back 13 and to have cooled sufliciently, the machine is started. When the V portion Assuming a plateto have been cast between the expanded core and the castin-no.1

of the cam groove reaches the cam roller .24. the lever 23 is rocked outward and thus through the 19 and levers 28 flexes the core slightly inward, together with the cast plate (which isconnected tothe core by ribs cast on the inner face of the plate as explained in'lthef revious specification). The plate can thus be stripped from the matrix without injury to the latter. The frames 17 17 new rock outward with the core and plate under the action of their controlling cams and thus strip the plate from the matrix in the castingback 13, which slides away so that the boring shell comes into position, opposite the core, .the frame 17 rocking in again and depositing the cast plate in the borin shell. During this interval the core an plate still remain partially collapsed, in consequence of the combined effect on. the rocking motion of the fram'es about the shaft 18 and of the contour of the cam groove 25. This is desirable in order to prevent damage to the bottom and top edges of the plate when same is swung into the boring, shell. The plate having been stripped from the core into the boring shell, the frames 17, 17 rock out againunder the action of their cams and the casting back 13 returns to position opposite the core, which rocks forward with the frames 17, 17

intopositionin the casting back and in doing so expands to circular form for the next casting operation. The next supply of metal to form a plate is then umped into the pouring gate and the machine stops. Mean while the boring shell has carried the previously cast plate to the boring, finishing and delivery mechanism. When the new plate has cooled sufficiently the machine is restarted and the cycle is repeated.

With the machine described and illus-. trated it is preferred not to break off the jet from the plate by means of a sliding member on the core, as described in the previous specification, but to break off the jet subseqfiiently after the boring shell has carried e cast plate to the position for the finishing operations. This, however, forms no part of the present invention.

It will be understood that the particular form of apparatus described and illustrated is given by. way of example and can be varied in its details without departing from the spirit of the invention.

' lVhat I claim and desire to secure by Letters Patent is 1. Apparatus ,for the manufacture of curved stereotype plates comprising a continuous non-hinged collapsible core capable of inward flexion, a casting box for cooperation with said core to cast the plates,

means for fixing a-matrix in said casting box, and means for flexing the non-hinged core inward withthe cast plate and'for expanding the non-hinged core to casting described.

shape, substantially as and for the purpose 2. Apparatus for the manufacture of curved stereotype plates comprising a continuous non-hinged collapsible core capable of inward flexion, a casting box for cooperation with said core to cast the plates, means for fixing a .matrix said castin box, and means for flexing the non-hinge core inward with the cast plate and for expanding the non-hinged core to casting shape, and means for cooling the cast plate on the core .by a current of cooling liquid applied to the inner face of the continuous flexible core, substantiallyas described.

3. Apparatus for the manufacture of curved stereotype plates comprising a continuous non-hinged collapsible core capable of inward flexion, a casting box for cooperation with said core to cast the plates, means for fixing a matrix in said casting box, and means for flexing thenon-hinged core inward with the cast plate and for expanding the nonfhinged core to casting shape, means for cooling the cast plate on the core by a current of cooling liquid applied to the inner face of the continuous flexible core and to the wall of the pouring space, substantially as described.

4. Apparatus for the manufacture of curved stereotype plates comprising a continuous non-hinged collapsibl'e core capable of inward flexion, a casting box for coiiperation with saidcore to cast the plates, means for fixing amatrix in said casting box, andmeans for flexing the non-hinged core inward with the cast plate and for expanding the non-hinged core to casting shape, a flexiblc inner backing tot-he core, spaced apart. therefrom-to form a narrow liquid chamber between the core and-backing, and means for supplying cooling liquid to said liquid chamber, substantially as described.

5. Apparatus for the manufacture of curved stereotype plates comprising a continuous non-hinged collapsiblecore capable of inward flexion, a casting box for coiiperation with said core to cast the plates, means for fixing a matrix in said castin box, and means for flexing the non-hinged core inward with the cast plate and for expanding the non-hinged core to castin shape, a hollow front gate member exten ing across the core, a flexible inner backing to the core, spaced apart therefrom to form a narrow cooling chamber between core and backing, and means for supplying cooling liquid to said hollow front gate member and said narrow liquid chamber, substantially as described.

6. Apparatus for the manufacture of curved stereotype plates comprising a. continuous non-hinged collapsible core capable of inward.flexion,-.a casting box for cooperationwith said 'core to cast the plates,'means I for fixing a matrix in said casting box, and

means for flexing the non-hinged core in ward with the cast plate and for expanding the non hingedcore to casting shape, a hol- 10W front gate member extending across the core, a flexible inner backing to the core,-

spaced apart therefrom to form a narrow cooling chamber between core and backing, a hollow back gatemember and means for supplying cooling liquid to said hollowfront and back gate members and said narrow liqpid chamber, substantially esfdescs ibed Apparatus for the manufacture 7 ciiif veds'ts 'fiiq e curved stereotype plates comprising a corn tinuous non-hinged collapsible core capable of inward fiexion, a casting box for cooper:

ation with said core to cast the platw, means for fix ng a matrix in said casting box, and

means'for flexing the non-hinged core in ward With the cast plate and for expanding the non-hinged core to casting shape, a hollow front gate memberextending across the -8. App'aratus for the manufacture of curved stereotype plates comprising a con.

tinuous non-hinged collapsible core capable of inward flexion, a casting box for coopezo ati'on with said core to cast the plates, means for fixing a matrix in said casting box, and means for flexing the non-hinged core inward with the cnst'plate and for expanding whereby the cooling liquid is led I the non-hinged core to casting shape, a hollow front gate member extending across the. core, a flexible inner backing-to the core, spaced apart therefrom to form. a narrow cooling chamber between coreand backing, 5,5

for admitting cooling l quid at one end of said front gate member, a, flexible liquid connection between then posits end,

"of the'front'gate member and t c said new row cooling chamber,*end=means for leadto ing 9% the liqliid fi chamber, Siibstagitiallfi ,9. Apparatus" t m seidijnerrow cooling s described.

l p dp at'es cbmprising a; con; timit as non-hinge collephiblecore capable es of inward flexion-,:,,qt cestingbox for eob'pei v 'atien with said coretoeast the-plates, means tor fixin a matrix in said castingbozz, end 7 mechanism for collapsing and eirpanding the core and moving the same into and out cc of the cast-mg box, said mechanism comoris ing. rocking levers (28, 28) pivoted to the core near t stop and bottom thereof, rocking frames" (17) for moving the core into' and out of the casting-box a. rocking shaft 22) mounted in said roclnng frames, links l9, l9) connected to said rocking levers 28, 28) and to said rocking shaft, a cam lever and links to expand and 00 substantially as described.

.In witness whereof,- I have hereunto signed my name in the scribing witnesses.

ROBERT OUMMING Witnesses:

THOMAS Anson), JEAN MITCHELL,

lapse the core,

iii-"manuf (2.3) on said rocking shaft, ands cem (25) for operating said rocking levers (28, 28) through said cam leveri rocking shaftpresence of two suba ANNANI): v

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