US887372A - Apparatus for casting curved stereotype-plates. - Google Patents

Description

No. 887,872. PATENTED MAY 12, 1908.

R. G. ANNAND.

APPARATUS FOR CASTING GURVED STEREOTYPE PLATES.

13 SHEETS-SHEET 1.

APPLICATION FILED JAN. 17, 1907.

WITNESSES:

No. 887,372. I I PATENTED MAY 12, 1908.

APPARATUS FOR CASTING CURVEDSTERBOTYPB PLATES.

APPLICATION FILED JAN. 17. 1907.

Fig.

WIT/YESSES No. 887,372. PATENTED MAY 12, 1908. 12,0. ANNAND.

APPARATUS FOR CASTING GURVED STEREOTYPE PLATES.

APPLICATION FILED AH.17. 1907.

J '13 SHEBTSSHEET 3 Fzy. 3

fNvENTOR:

fimm M I No. 887, 372. V PATENTED MAY 12, 19 08.

R. G. ANNAND. APPARATUS FOR CASTING CURVBD STERBOTYPE PLATES.

o .17, 1907. armour I rILBn IL] I 13 SEEETS SHEBT 4' lA/VE/VTOR:

wmwsssfs: Q I W WI No. 887,372. PATENTED MAY 12, 1908.

' R. C. ANNAND.

APPARATUS FOR CASTING OURVED STEREOTYPE PLATES.

APPLICATION II 17. 1907.

LED JAN 13 SHEETS-SHEET 5,

WITNESSES:

PATENTBD MAY 12, 1908.

rm. ANNAND. APPARATUS FOR @ASTING} GURVED STBREO'IYPE PLATES.

JAPP LIQAT'IOR FILED JAN. 17. 1907. m SHEETS minim 6| WITNESSES:

No. 887,372. i PATENTED MAY 12, 1908 R. 0. ANNAND.

APPARATUS FOR CASTING OURVED STEBEOT YPE PLATES.

.17 19 4 APPLIOATION LILED JAN 07 13 SHEETB SHEET 7 No. 887,372. PATENTED MAY 12, 1908.

R. o. AIN'NAND.

APPARATUS FOR CASTING GURVBD STBREOTYPE PLATES.

APPLIOATIOH FILED JAI. 17, 1907. 1 HEBETB BHEET 8 Fig. /2.

,WITNESS ES: W 2 g 2 URVED STEREUTYPE PLATES.

APPARATUS FUR CASTING 13 SIIEETS SEEET 9:.

APPLICATION TI W/TNESSES:

No. 887,372. PATENTED MAY 12, 1908. R. G. ANNAND.

APPARATUS FOR CASTING CURVED STEREOTYPE PLATES. APPLIOATION FILED JAN.17, 1907.

13 SHEETS-SHEET 10 lNVL-NTOR:

WITNESSES:

N0. 887,87". I PATENTE MAY :2, 1908. B. O. ANNQLJD.

A'QUS FOR CASTING GURVED STEREOTYPE PLATE.

APELIUATION FILED JANET! 1907- APPA No. 887,372. PATENTED MAY 12, 1908. R. G. ANNAND.

APPARATUS FOR CASTING GURVED STEREOTYPE PLATES.

APPLICATION FILED JAH.17. 1907, v

13 SHEETS-$HEET l2 No; 887,372 PATENTED MAY 12, 1908. R. G. ANNAND.

APPARATUS FOR CASTING GURVED STEREOTYPE PLATES.

PPL TI 1 J .17. 1907.

A IOA 0N ILED AN 13 SHEETS-SHEET 13 INVENTOR:

WITNESSES;

' matrix to the solid concave part or shell of- ROBERT cUMMiN' ANNAND, or SOUTH snrntns, ENGLAND.

Specification of Letters Patent.

. APPARATUS FOR CASTING CURVED STEREOTYPE-PLATES.

Patented May 12, 1908.

Application filed January 17, 1907. Serial N 0. 352,695.

To all whom it may concern:

Be it known that 1, ROBERT CUMMING ANNAND, of South Shields, England, have invented certain new and useful Improvements in A paratus for Castin Curved Stereot pesP ates, of which the to lowing is as eci cation.

his invention aims to provide improved apparatus whereby semi-circular or curved stereotype plates can be rapidly produced.

-Morc particularly the improvements apply to power driven machinery for auto matically casting or automatically casting and finishing such plates, but as will be apparent hereafter certain of the improvements described may be used in curved stereotypev casting or casting and finishing apparatus operated partly or entirely by hand.

In apparatus as hitherto used for the production of semi-circularstereotype plates it has not been possible to clamp or fasten the the casting mold, so that it can remain in this position while the desired number of plates are being cast and removed. The usual practice is to arrange the casting mechanism so that the matrix with the side gages is drawn out of the casting box attached to the newly cast plate and the matrix has to be stripped from the late and reset in position in the casting ack. As this has to be done each time a plate is castit consumes much valuable time and greatly reduces the output ofthe machine.

A leading feature of the invention is the provision of means whereby any desired number of semi-circular or curved stereotype plates can be cast and stripped in succession from a matrix clamped or :[lxed in a rigid continuous casting shell, without injur to the matrix. This is effected by bending the cast plate inwards .on the mandrel to a suflicient extent to enable it to be stripped by' the mandrel from the matrix, leaving this fixed in the casting shell. I a The invention further comprises means for thus bending the cast plate and stripping it from the matrix.

A further part of the invention consists in clalnpingor securing the top, bottom and side gages in a semicircular or curved casting box so that they will retain the matrix in the casting position while the late is bent inwards on the mandrel and wit idrawn therein from the casting shell. Such bending of the plate on the core may be effected by constructing the core so that it can be collapsed after the plate has been cast, a suilicient connection between the cast. plate and the core being provided to cause the plate to partake of the collapsing motion and thus move away from the matrix to enable it to be stripped therefrom with the core when this is moved out of the casting box or shell. Or a non-collapsible core may be emploved and means may be provided whereby when the core is moved out of the castin box after the plate has been cast, the plate 15 at first delayed from following its motion so. that clearance is created between the core and casting box to allow of the ilate being bent inwards on the core, this bending being effected as the core moves out of the casting shell.

The invention further comprises the combination with a stationary casting shell and a reciprocating boring bed, of a movable core adapted to be rolled, rotated, or swung with the cast plate adhering thereto out of the casting position in a casting shell direct into the boring bed, the plate being deposited by the core into the borin bed which comes opposite to or at a lower revel than the casting box.

,The invention further consists in details of construction and combinations of parts which will be hereinafter fully explained in detail.

In the accompanying drawings -Figures 1 to 15 illustrate a machine constructed in accordance with the invention for automatically casting and finishing semicircular stereotype plates. The melting pot and pump and their position with rcs ccl to the machine are shown in Figs. 7 am 8. For the suite ol clearness they are omitted in the other figures. .Fig. 1 is a side elevation of the machine. Fig. 2 is a part plan of the machine looking in the direction oi the arrow A,Fig. 3. Fig. 3 is an end elevation of Fig. 1 looking on the end at which the main drivinggcar is situatedl Fig. 3 is adctail longitudinal section on a larger scale of the cum drum and reciprocating boring shell. Fig. t is a detail sectional end elevation showing the reciprocating boring bed and boring and delivery cylinders together with the means for reciprocating the boring bed. Fig. 4* is a detail end elevation showing the boring shell 23 in its l boring position under the boring cylinder47 end of each cycle.

with the tracks 51 and 56 hereafter referred to registering. Fig. is a section on line .B-B, of Fig. 1. Fig. 6 is a separate viewi and elevation illustrating" mechanism for automatically at the proper eriod to :supply molten metiil to the casting 02;, Figs. 7 and 8 being views of the general lines of the machine in side elevation and plan respectively, and 9 yiews in' seotionel side elevation and. ion. "illustrating means for clamping the mettix in the cesting shell. Fig. is e'ii o-gremmetic i new illustrating the mode oi stripping the cast late from the matrix, clelivetmg into the ee-[1g shell and breekieg 7 Figs. 16 and 17 are a port longituciiieel seotion and an end elevation illustrating modified form of collapsible oore. pert sectional View correspon I I showing this form of core applied to the some machine with thenec'esssry modifzcgitionot" the mechanism for'ope'reting t s core v19 is a diagram showing the mode of sepsmtin the newly cast plate fro the stopping the machine at the Figs. 7, 8, 9 and 10 illus- 't'rate the mechanism for operating the porno oi? the jet.

, iiig box, tlieiehy casting a plate.

Means to cause the aforesaid boi'ihg shell I to move under the cutters which trim the streight'edges of the newly eastplate, and then to sto under s revolving loiode which bores the p etc,

to cause the plate to revoive about its axis curvature after having been bored a second set of cutters which so as to trim the cii'c il the finished ts oie.

i" e gee end finally to deliver hate or. toes suitably placed the completion of s plots.

The snows ill fii st ties-exi es the gene e1 construction and i l he mochineencl often/voids iersted to bend the casting eoroi irises four lowe frames l 2, 3. Frame suppo' ts brec ie'ts 5, 6,- 7 which core the main driving gear. This consists fast and ioose pulleys 8 and. 9 on the driving shaft '14). This 'iattei is geared up to s ooiintershoft 1 13cm respective shafts. 0n the driving "l it iO/is av Worm l i vhich drives a. Wheel 2-5 the shaft of the boring and self-* cylinder deserihed. later.

H iooseiy mounted miter Means to stop the wholemechsiiism after on the. zlmwings indicate the direction of motion oi the posts.

. the masons Wheretrizg widths by toothed wheels 12,

and :Telivering 1t by the coreinto the loorh'ig' shell by the modified mechenis of Fig. wheels i6, 17 washing with a initerwheel 18 Fig. 20 is esimilar View to Fig. ISillustrating {keyed on the shaft 19 of the coin, (lIUDIQO I another means of bendin end stripping the (see Figs; 1, 2 or .l 3). The miter Wheels 16, plate from the matrix While employing snow are (hit. sltemateiy opposite direccoliapsible mandrel. Fig. 20 is e sectional i tions clutch 2i sliding on keys on the deteii showing the fixed-stopper oer 197 on shaft 11 and eui ometiceily operated at the 5,5 the core Fig. 21 is -e corresponding 1 proper period 9. com groove 2 formed in plan. Fi 22 is a. similziilview to Fig. .20 e toothed whee. showing t e coreremoved $13021 the mole. end 1 the clutch 21 to the plate bent. Fig. 22 is e detail Vl8WlllHS- i moo. .teo on the ironic treting the projections 206 formed on the owe-i" end ofwhich moves the and l operate a rolier inned to a.

3 l .39 plate. Fig. 23 is an. end elevation similar to h alternately into eiigegement with the 11 Fig. 20 and SllOWlIlP the method of bending miter Wheels i? so that the miter Wheel and stripping the ete applied to a casting I 18 and drum are driven alternately in 0; machine operated y hand. j i I directions. f-"Referring to Figs. i to l5, the machine I ii the sitting box bolted to 55'-'iilustrated comorises a continuous casting 1 .nd .2 whicheiieircie it. at each shell in which t e matrix is firmly fixed, a I melting pot with a Limp e. boring and ti'immini; mine and elivery mechanism. the wirhole adopted to produce and deliver some so pletely finished stereo plates.

The inechine provides the toiloviring eutomiitic mechanism .-.Meons fo removing the newly cast plate from the casting shell direct to a boring sheii in which it gem-ems tili trimmed aiong its shell 23 into the casting shell 72 for casting the plate and from the casting shell into the boring shell to deposit the cast plate. To enable the plate on the core to strip lrom the fixed matrix without injuring the same. the

core to enable the plate to strip from the matrix.

The boring shell 23 is at a lower level than the casting shell. It slides on upper and lower members of the frame -'l and is reci no cated by the cam drum upon whicn it rides by means oi bearings 24, 24 (Figs. 2 and 5) bolted to kee ) S 35, 25. Further support is provided by the strut 26 which takes part of the heavy strains exerted in boring.

27, 27 (Fig. 5) are ordinary wedge adjustments for the boring bed to compensate for the wear of the sliding parts.

The mechanism which controls the move ments of the cast date until it is deposited bythe core into tic boring shell is all cell tered on the frames 1 and 2 and is driven 'i'ronin a pinion 28 keyed on the shaft 19 of the cam drum throiwh a set of reducing gears 29, 29*, 30, 31, 32, the last of which is keyed on a shaft 33 at the casting shell side of the machine and serves at the same time as a crank disk, having an equal throw with another crank disk 54 mounted on the shaft 33. As the drum 2() is driven alternately in opposite directions through clutch 21, the crank disks 32, 34 have an oscillating motion (amounting to five-eighths of a revolution each way in the machine illustrated). This motion tr ansferredby the links 35 to the/ shaft 36 of the collapsible core which is thus made tb cscillate about the central shaft 37 to which it is connected at each end by levers 38, 38. A balance weight 39 is attached to the shaft 37 by arms 40, 40.

While the shaft 36 oscillates. the collapsible core 41 revolves, this motion being produced by the meshing of the gear wheels 42, 42, keyed at each end to the shaft 36, with the segmental racks 43 bolted t o the frames 1 and 2. may be provided if desired on the toothed wheels'and racks to prevent them engaging too deeply the guides 42- on the spur wheels running on the guides 43 on the, racks which are struck fromthe same center as the racks.

and the plate is carried by the core and deposited in the boring bed; the combined n1otlOHx of rotation and translation further en ables the jet to be broken oil' in the manner hereinafter described.

The reciprocating motion is imparted to the boring shell by means of a spiral groove l- 'l formed in the surtace ol the drum Lit) in which works a roller 45 carried by the boring shell. The drum 30 being rotated alternately in opposite directions as described, the boring shell is driven from end to end of the lrainc l with periods oi rest at each end, these being provided for by coi'icentric portions 44 of the groove A l in conjunction with the action of the clutch 21. 'loolsor cutters disposed in the usual way in boxes 4-5, 46 (Fig. 2) above the path of the boring shell trimthe straight cdgesol' the plate as the boring shell slides under them alter receiving the plate from the core.

-17 (Figs. 1 and i) is a boring and delivering cylinder mounted GOI'MO'IIiLIlt'tlll) with the boring shell at the outer end of its travel. T his cylinder is driven continuimsly while the machine is working the worm 14 meshing with the worm wheel 15 on the shaft 48 of said cylinder which is mounted in bearings 49, 50 formed respectively in the l ramo 4 and in a bridge 51 connected to the two sides of the frame 4. 'llhe'cylindcr 47 carries a boring knife 52 and an. automatically retractable driver bar 53 at opposite sides and is Formed with segmental ribs 5-1 which strengthen the part and serve to support the plate during the trimming of its circular edges and its delivery; The mechanism is arranged and. the speeds are regulated so that the boring shell moves from its position of rest opposite the casting box to its position of rest under the boring cylinder 47 While the boring knil'e de scribes the are C, Fig. 4. 55 is an end gage on the boring cylinder l7 and which may be longitgidinally adjustable by any convenient means to provide for plates of dill'erent widths of page. A semicircular lip 56 is provided on the boring shell 23, which lip keeps the plate in position in the shell while this is traveling,

and coacts with the gage 55 to guide the l justable longitiuliinilly oi the boring cylinder Guldes or bearmgsurfaces 42 -13 l7 to suit dill'crent sizes of pages.

5S-is a stopper bar arranged to slidcinwards on the upper member of the frame 4- at the end opposite the casting shell and 5%! is a stopper bar similarly arranged to slide on the frame 4 at the trimming and delivery end of the machine. "he bar coacts with two iixed stopper bars 60 bolted to the lower member of the frame l to hold and strip the plate into the boring shell 22-; from the core 41 when this swings to deliver over the plate into the boring shell and the bars (it) also prcvent the plate from sliding outv ol the boring shell.

The stereo plate is cast with small abutment faces at each end as will be explained 1 plate.

with respect to Figsand 14, these re;

jections beingsituated at about the 'ne" Where the jet of the cast platebegins, so that shoulders are formed at each side. of-theand rolls the plate The core swings when the stopper bar 5 nto the boring shell 1S retracted, the abutment, faces on the plate rolling clear of the bars fiO'and coming up :under or behind the inner corners 60 of bored at the left hand end.

these bars, the boring bed 23-beigins to slide'away, so '1 that the plate is then an lied to the boring end er 'ch-mQvement-the left "50 (Fig.2)

- themachine,

"tdmanipulate the plate these here when; the plate is in the boring shell, the je bein hen located between ere t e jet is broken-oil before .ee to slide in'the borof the machine in hand stopper bar prevents the plate slipping out of edbyravity. The edge of the is ormed a'sa sto per bar to ar purpose at the ot er end of at which end the sliding stopper bar 59 serves to hold the plate in'.the boring shell during the boring operation. The stop per bars 58 and 59 are operated to engage and release the plate at the proper times through the medium of a cam 62 secured to a toothed wheel 63 running on a stud 64 in the frame 4 and driven by a pinion 65 keyed on the shaft 48 of the boring and delivery cylinder so that it revolves continuously while the machine runs. The cam,62 by means of a roller 68 and lever 69 imparts rocking motion .to the shaft 70 which works onbosses 71, Figs. Z'and, 3, cast on the frame 4, and thence by levers 72 to the stopper bars 58,59 which the delivery table 61 serve a r have projecting bosses 73 connected to the levers72 by a stud and slot connection indicated-at 74 in Figs. 3 nd 5.v vThe stdpper bars 53 and 59, are sli -in and out at the proper'tirnes on the frame; so that their for- Ward-edges come over the upper edge of the cast plate in the'boring shel The bars,58, 59 are guided in their sliding motion by T-pieces '75 screwed to the frame 4 and passing through slots 7 6, the edges of which they overla so that the bars when 'slid forward can iold the plate rigidly in position in the boring shell in the respective positions thereof, that is to say when the plate is beingstri ped from the core at the right hand end of l hg. 2 and when it is being The retractable driver bar 53 on the boring cylinder acts in conjunction with the sto per bar 59 and that formed by-the-edge of the delivery table 61 in the boring and trimming of the curved edges. While the shell 23 is sliding with the plate into the boring position'the driver bar 53 is describing are D, Fig. 4, but it is retracted and describes this are with a snialler radiusthan that of the plate, so that it clears it. The bar 53 is automatically projected and retracted as follows-:-77 are inclined slots in the bar 53 adapted to slide over bolts 78 by the boring and delivery cylinder 47. pin passing through an inclined slot 81 in 79 and screwed to the bar 53. 32 is a springpressed -rod sliding in holes in the ribs 54 and engaged by the pin 80 which also Works in the slot 83 in abhor-84 fixed on the rod 82. It will be seen that a movement of rod 82 to right or left-of Fig. 2 will project or retract the bar 53. This is shown in the projected position with the spring 85 com ressed. It is always held in this position when describing are C, the spring rod, being kept pushed back during this portion of the revolution of 4.7 by a semi-circular track 51*provided on the bridge 51 for the end of the spring rod. For the are D a simil when the shell 23 is inthe boring position, the track for the end of the spring rod being provided by the semi-circular lipv 56 which then forms a continuation of the track on the brid e 51. In any other position of the boring s ell the s ring 85 is free to push the rod outwards set at while describing are D the bar 53 is retracted, its outer edge coinciding with that of the Wing 79.

seen that when the boring shell '23 is in its end position under the boring cylinder 4! the semicircular track 51 on the bridge 51 circular lip 56. on the'boring shell 23, so that a circular, track is formed, which keeps the spring pin 82 pressed back duringthe rotatlon of'this pin with the boring cylinder.

'When the boring shell is-in the boring sition under the borin u driver bar 53 is projects the knife 52 on the boring cylinder bores the inside of the cast plate in the first half ofthe revolution (are C) and the rojected driver bar 53 then comes against t e straight edge of the describing the are D, pushes t of the boring shell on to. the boring cylinder as shown at J, al, Fig. 3, the cutters 57 trimming plate rotates.

e plate out bar 53, when rejected, to clear the stopper bar '59 and tahle manila, drivingthmplate round.

. The machine the finished plate has been pushe moment'desired. This is effected hand at any anisin shown in vF 6 for throw by the mech the driving 89 is the str' loose pulley 9.

rying oell' fork 90 and keyed on. the' s indIe 91 sliding with a feather in bosses Q2of the The end of the spindle v brackets '5' and 6 the bar is attached to the Wing 79 of SOis a' ar operation takes place On reference to Figs. 2 and 4", it will be 95 registers with the track formed by the semicvlinder and the late and, in

ribs 54 of the the curved edges as the There are gaps and projections 86, '86 in rojec;

ivery table the driver is automatically'sto pedwhen d on to the ribs 54 as explained or it can be stopped by,

belt from the fast ulle 8 to the} 9?? car-j von the cam 62 in each revolution thereof.

The gear wheel 63 and cam 62 may make one revolution in the complete cycle of the machine and the block 94 then pushes the finger 93 and spindle 91 to the right and throws the belt on to loose pulley 9 and the machine stops, the block 9-1 being by this time just clear of the finger, so that the striking lever can be moved to the on position by hand. As the finger is clear of the block at every moment of the cycle except when the plate is being rotated out of the boring shell to deliver it as explained, the machine can be stopped and restarted by. hand during any of the trimming processes if desired.

The casting box is supplied with molten metal from an ordinary form of melting pot 05 and pump, Figs. 7 and. 8, the details of which are well umlerstood, the pumpbeing operated to pump the metal into the casting box 22 through an arm 05* by the descent of a weight 96 suspended from a steel rope 96 and attached to the piston-rod of the pump. The steel rope passes round three pulleys 97, 07 to a tripping mechanism shown separately on a larger scale, Figs. 0 and 10, Fig.

0 including a portion of the frame 1 and thensr illatnu; shaft 33 while Fig. 10 is an end view of Fig. 0 with the driver 9% omitted. The driver 08 is secured to the shaft 33 by a set screw and it carries two pins 90 and 100.

The rope is secured to a grooved pulley 101 which runs free on the. shaft 33 adjacent to the driver 08 and has a rectangular piece 10 let into its circumlcrcnce, which piece serves as an anchor for the rope an as a stop, enabling pin Hill to drive. the )ulley in the direction of the arrow K. The catch 102 works on a pin 103 screwed into frame 1 and has a spring 101 which tends to press it into the position shown in dotted lines, Fig. 10. As the driver 98 rocks with the shaft 33 the pin 1H0 drives the pulley- 101 round by the )llH "101" and thus winds 11) the row and raises the weight so, until anchor piece 101 is caught by the catch 102. ()n the relnrn ol' the driver with the shaft 33 the pin 00 prshes back the catch 102 to the position shown in full lines and causes it to release anchor piece 101, whereupon the weight.

descends, turning the pulley till the anchor piece strikes pin 100 which will now be again in the position shown in Fig. 10.

.1 will now proceed to describe the details of the machine whereby the matrix is secured in the casting box, the )late temporarily bent so as to be cleared from the matrix before moving out therefrom, and whereby the jet is automatically broken off in lhe boringshell 23 by the return ofthe core therefrom.

The method of. fixing the matrix in the shell is shown in Figs. 1'3 and 14. 105, 105 are loose side gages disposed in the casting shell 22, these being preferably arranged to overlap the margins of the matrix about an inch and being inserted in the shell 22 by a semi-circular feather 105 with whichthey are each formed, these engaging in grooves in the shell and preventing the side ga es from slipping out when released. Any 1. esired number of similar grooves may be provided in the shell to allow the gages to be set for platesof difi'erent'widths.

Portions of the main frames 1 and 2 are shown in Fig. 14 and through these are threaded spindles 106 107 on which are centered gri pers 108 109 to hold the straight edges of t 1e matrix 110 which is thus gripped against the shell 22 at M and N along its straight edges, and between the end gages and the shell at its curved edges. Grlpper 109 also serves'as a sto per bar, com letely filling the gap between t e shell and tl ie core when this 1s in casting position, and together with the end gages forming a metal-tight box only open at the top. Rripper 108 is a casting having a channel 111 for circulating cooling water in the known way and fitted with a steel gripping bar 112 running the full.

Also screwed wedge-s iaped part 115 fastened fiij'the core- 41 (Figs. 3 am 5) and extending across the core. The ends 114 of the mouth-piece abut against the ends-of the side ga es 105 and lock these in positlon, causing/0 em to grip the matrix. in-position tii'grip t e matrix and lock the side gages by 108, by means of eccentrics 116 l 17 working in forks 118 119 attached to the respective grippers; Eccentric 116 is held by brackets 120 carried b the shell 22 and is operated by a handle 121 raving a facing 122 formed to abut against a facing 123 on the shell. By throwing the handle over, the co centric rocks the fork and grip er 108 into or out of its locking position ant the facings .122 123 are so arrarwed that when the gripper has been rocked into gripping position the handle abuts against 123 and. locks the gripper 108 in position. The gripper 109 is arranged to be opened and locked in the same way by the eccentric 117 the bearings f winch are in the main frames 1, 2, theecccntric 117 being operated by a handle 124 with a facing 125 coacting with a facing 126 on the frame 1. The ends 114 of'the mouth iece project inwards a short distance beyom the usual bevel on the end gages 105 (see Fig. 14)

so that small triangular abutment faces 127 are produced at the sides of the jet. These faces serve as before explained to abut against the corners of the stopper bars 60,

60, and )revent the-plate slipping out-of the boring s ell.

I will now describe with reference to Figs.

The grippers 108 109 are locked 11 end 12 in the comet-me else? of slightly above the same sh eis presses smell sharp angle or recess t ding across the get while the edge of ripper be? 112 IS edspteot to form e co a t Z; csstingshell V spending sharp angle across the opposite as meme in two i e of jet at the line of breakage so as to the hinge i -ftete hreeking oil, of the The core 130 attached formed with the usual parallel lower segments grooves into which the metal runs. to form ere circemferent. Aug isrthe rihs on the inner fece of the cast lete, ranged toelicle in i which they but the grooves in the core are marvel and. can be bolted, so the: the ediecentedges of slightly undercut as indicated at 14?, the two segments -11 -1* may be set 12 in which 41 inclicetes the Core, 148 the This up into cont-sot to com e lo: Wear or metal of the plate and 110 the matrix. when otherwls seqmr 3:2 is s pm undercutting provides s'uflicient connectiongages lecked as ex; l'sined;

with reference to Fi s. 13 and 14 and t e nose expanded and moved into position in the use ling shell 22, the operation of the machine is follows 2-starting 5mm the commence ment of the cycle, while it begins with the plate: Assuming this piste to have been formed on the l'r'ege memhel 130; this pin has one partefeircill se*tion, centei which is 128, pI'oj-ec i1 0 the hinge ember 129, and the other of elongated seclien 132*, so as to have s pi'cper hearing sus face as i; slides in a slot 133 in e bracket 13% supported by the shaft and revolving therewith. This bracket operates links 135, 135, each centered at one end on the brsolcet While, the other end works over ecceniric bushes 136 on the studs 13?. The eoeeniine ity of the bushes 536 provides etljustl it so that on t l l l l y is further l l l operation of the control mechanism the segments be forced and to be solid enough to be manipulated,

Q the machine is star ted by pushing over the The links are in the po- 'gs. 3 and 5, and because the rental is sli htly past (to the left in Figs. and 5) the ine'joming thecenters T and? the core is firmly locked in the cestine peeition. The center V cannot move ferto'eiito the left because the train of gear 28 031 contfolling it is. stopped b the roller.

apart or less as he (l.

- will be umlcisteocf that the shove Q SCilpiluIl refers to one end of llie core. the mechanism being duplicated at the other and striking lever 89 sition shown in 1 ens-ft and hrs-chess cgm move in eclion of tile slots 133 zfiid by this 137 end consequently er together, or

2* movement the studs "Hie-n ts are moved clos of-the casting shell 22, the motion required to the core apart into the rt. The expansion of the core which drives the boring shel .23 and which egeinst l3l1\- action of springs 138 is 'now it the eml of the groove is the-drain provided at each {211i f the core and pieced. 20 The shaft is also eccentric With re between one of the egments and th washers erd to the center sing so on account force the segments 0 c of J o mected to the other s 139 of spring rods 34 es 141. 142 is s grovsogment by pins and ey ity catch providedet cech end of the core and proper castii g position. As the crank wheel WlUCll WUZkS between the bracket 134 and e 32 and crank dish 34 begin to move in the.

in 143 and falls into en' eucmentwith direction of the arrow R Fl s. 3 and 5 the 7 O I 9 nose 144 on the hreeliet w lien the core has centerT of shaft 36 moves towards egosition delivered the slate into the bonn shell and concentric with the castin shell. .V'hen It position the outer ends of the to the p1ns l32 and rough the linksarrives at this slots 133' have moved '1;

the brackets 134- have t ll closed up the core as the diegrem'Fig. 15, drsggingwith it the newly cast-{plate 152, Fig. 1-5 which is thus bent inwen s away from the matrixet the top end'bottom. The plate is now freevfrom the matrix except in the viejnit of thehin e point 128. Further motion ol' the links-:15

sterts the core rolling and the plate finallyleaves the matrix, bemg rolled aWey by the-- action of the spur wheels 42 and segmental.

racks 43 through position H into the bone shell. So long as tlnues, the shaft 36 remains mincentsie with.

the core is then prevented 145 is a groove formed in the core near the hinge joint, led with asbestos or like hould leak past expanded, so that from cellepsing. the segments of and adapted to be ii, packing so that if any metal 5 the joint it will he stopped by tl e pat-kin and not interfere with the pmpei' Working of the segments The core lies stteo hed to it the wedge shape-kl pie-2e or lip 115, Figs. 3 and 5 (omitted in l and. 12) which shuts against mouth-piece ends 114 of the gri per 108 snzl closes the pouring specs st 5 1e iron-t when the core is in casting position. 146 is a steel knife edge of the usual kind inserted in the core behind the wedge shaped piece 31 end extenemg {LET-9S5 and shown at position I in this rolling oi' the core con the core and shortly before the shaft 36has completed the forward oscillation the plate rolls into the boring shell and under the fixed stopper bars on as explained the head oi the jet describing the curved path indicated by dotted lines 148). In the further forward motion ol shaft 36 to complete the oscillation, the center T of the core shaft 36 again i'noves r(- latively to the core, which therefore expands again with the plate bending it back to shape or approximately so and the gravity catches 142 fall into engagement with the noses 14 i and stopper bar 59 which had been drawn back to allow free movement for the plate, moves forward over the edge of the plate. 'hleanwhiic the links 35 have come to the end of their stroke. and the action is now reversed, the eiiect of which is to strip the plate from the core and to break off the jet.

The stripping of the plate from the core is effected by the stopper bars 58 and (30 which prevent the plate from rolling back with the core. The breaking of the jet is eii'ected as indicated in Fig. 15 by the wedge shaped mouthpiece component- H5. This. as the core to ls back describes the dotted path 150 and presses the jet down over the edge l51 of the boring shell aft about the line of the sharp angles formed therein by the knife 116 and gripper bar 112 so as to breakit ofi', as shown at position HI, Fig. 15. The core is reyent'cd from collapsing in its return rol ing motion by the gravity catches 142 which remain in engagement with the noses 144 and fall out of engagement when the core has rolled back in to the casting shell 22,1ii which position the brackets 134 kee it expanded ready for the .next cast. "v iile the core completes its return to the casting position the boring shell 23 slides away to the boring position at the other end of the machine, the straight edges of the plate being trimmed by the tools in the boxes 46 as the boring bed slides under same. As soon as the core has returned into the casting shell, i. e. on the completion of the back oscillation of shaft 33 the tripping nim-hanism described with roteence to Figs] to 10 comes into action to relcaso the weight 96 which descends and the pump delivers the molten metal into the moid for the next cast. Siniultaneously with this last action the boring knife 52 begins to bore the plate in the boring shell and while this boring and the subsequent driving oi the driver bar 53 are taking place the new cast is cooling in the casting shell. Almost immediately the plate is in position under the boring cylinder 47 the knife 52 which has already made a revolution since the commence ment of the cycle, enters the shell and bores the plate, which is meanwhile held by the bar 59 which slides into position at the same time. the bar On the completion oi 53pass through the gaps 88 01" the delivery table 6] and come against the lower edge of the plate and drive it out of the boring shell round to a position J J Fig. 3 on the ribs 54 oi the boring cylinder, thetools 57, 57 trimhung the curved edges as the plate rotates.

The stopping mechanism before described now arts and operations cease, the cycle being complete. When the machine starts on a second cycle the plate is delivered on to the table- 61, the leading edge oi the plate being prevented from further rotation by the promachine ends with a plate cast in the mold:

Thus while time is economimed the attendant l.

can always make sure that the cast plate has cooled and set sulhciently to hen r mampuhttion before starting the machine in the cycle.

I will now describe the moi-lil'ied lorin ot collapsible core and its operating meehanism as illustrated in Figs. 16 to it). This core consists of two segments 152%. 153 the upper of which carries the usual wedge shaped complement l 15 for the mouthpiece and is hinged as before, but with a di'tl'er nt form of hinge. The members 154, 155 of this form have semi-circular bearing surfaces 156 both of which encircle the pin 157. To hold the whole together, a split collar 158 is used, the pressure of which is adjusted by a screw 15!). The shaft 160 of the core corresponds with, the shaft 36 of the original arrangement and is carried by the links 35, 35 and connected to the spur wheel 32 and crank disk 3i as be- 'l'orc except that the eyes by which the links 35 are connected to the studs 35 on i the wheel 32 and crank disk Zi-t are slightly slottedat, 160 In the present arrangement however the shaft 180 is rigidly fastened in bosses 161, 161 of the lower segment.

'pi'evious arrangement eifect the mine rolling Spur A wheels 4-2 mounted on the shaft as in the motion oi the core by engaging similar racks =13 ouides or bearing surfaces 1t2 being provided on the spur wheels so as to 'r'un on curved giiidcs 163 on the racks (Fig. 18) to prevent the spur wheels and racks engaging too deeply. 164 is a can! having a slot Hi5.

and forms a path for the roller lti'z'which re volves freely on a stud 168 which projects-- through a slot 169, struck from the hinge center, in the spur wheel and guide. An identical arrangement of cam mec'lnmism is pro vided at the other end of the core, the cams being attached at each side-to a link 17?,- these links being centered. on a shaft 171 set in.

eccentric bushes 'l72 Working in the frames 1 and 2.

the boring the projections 86" of the driver bar hung from this shaft by arms 40, 40 as before.

The weight 39 to balance, the core 18'

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