US2442246A - Stereotype casting machine - Google Patents

Description

May 25, 1948. w. o. PETERSON 2,442,246

. STEREOTYPE CASTING MACHINE Filed Oct. 15, 1945 4 sheets-sheet 2 May 25, 1948. w. @PETERSON STEREOTYPE CASTING MACHINE 4 Sheets-Sheet 3 Filed 0G13.4 l5, 1945 May 25, 1948. w. Q PETERSONl 2,442,246

STEREOTYPE CASTING l MACHINE asy toprovide a metal tig-ht compartment.

Patented May 25, 1948 UN [TED STATES PAT ENT OFFICEV STEREOTYPE CASTING MACHINE Wayne Peterson, Moorhead, Minn. Application October 15, 19245,.Serial No. 622,284'

lower plate first bein a.4 horizontal. position and the upper. plate raised-omits hinges. to a. substantially vertical position.Y so thatv the workcan be laid out onthe smooth. surface of the lower plate. The matrix is then placed. inL a central position on'theface-offthe-lower plate, the closure forming strips or bars placed. about the three sides of the matrix, leaving the rear end open, andlacover paper placed over the closure strips. The upper'plate is then lowered into .position so as toroverlie the cover paper. Pressure is then applied between the upper .and lower plates so The platten is thenY raised to `a vertical .position and the metal poured .intoy the open ended mold cavity;

It isimportant that the pressure brought to vbearagainst theplatesfbe uniform in` order that the-metal. slug being. cast therein, is of uniform thickness;A for .if it` isnot' uniform the. ink.. will not be of uniform shadewhen the slug is subsequently used `for printing purposes.

In all casting' box-es heretofore devised, the clamping 'pressure between the plates has not been. suchl as to bring uniform pressure between thefplatesfat all points, with the result that the slug cast thereby` has been very irregular in thickness, sometimes even tothe point of being unuseable means y.whereby the platten is. locked against 4 Claims. (Cl. 22-5l tilting movements when the upper and lower plates are not clamped together; Y

A stillfurther objectof'myinvention is to provide an improved pouring `spout on the metal container. p

A still further object of" my. invention is .to provide a novellarrangement ofthe metal box, heater, and scorcher platten whereby .the heat utilized for the heating of the metal' may Valso be used for heating the scorclier. platten.

A still further object of my invention is the provision of a novel scorcher platten.

The ab'ove and still further objects' of my invention will'. become apparent from `the following specification andthe attached drawings.

Referring to the drawingsY wherein likercharacters indicate 'like parts throughout the several views:

Fig. 1` is a front perspective'of'my novel device showing 'the' casting platten in a horizontal position;

Fig. 2V is a perspective illustrating 'the tilted metal pouring' position of the castingv platten;

Fig. 3` is a still further perspective view/show'- .ing the lower .plate in a horizontal position, locked against. tilting movements; but withy vthe `5--5 of Fig. 4;

Fig. 6` is .a sectional view taken on the line 6--6 of Fig. 4; K

Fig.. '7 is a sectional view taken on the line 'I-1 of Fig. 6;

Fig. 8V is a fragmentary sectional view taken ontheline 8-"8 of Fig. 4;

Fig. 9 is a fragmentary' sectional view taken on the line 9 9' of Fig. 4*; and 1 A 1 Fig. 10 is a fragmentary sectional view taken on the line I'U-IO' of Fig. 4.

Referring with greater particularityto the drawings,l .the numeral .I indicates a frame'structure in its entirety, generally rectangular kin form, and comprising laterally spaced substantially parallel side members 2, a rear-end member 3, and a front end member d. Side members 2 and end members 3 and li are preferably, and as shown, cast separately and secured `t-ogether by bolts or the like' 5. Side members 2 are generally L-shaped in form so as to provide a pair of upwardly projecting laterally spaced flanges 6 at the forward end of the'rframe I. Frame I is shown as being supportedby Alegs 'I, oneo'n each Acorner thereof.

A pair of horizontally disposed rails 8 are shown as being secured by means of bolts 9 or the like to the inside faces of side members 2 in opposed relationship. Washers 9a space rails 8 from side members 2. A casting platten made up of a lower plate I0, having a flat upper surface II, and an upper plate I2, having a flat lower face I3, is positioned between spaced side frame members 2. Plates I and I2, shown as being generally rectangular in form, are of cast iron or other suitable material and are provided with a plurality of outwardly projecting reinforcing ribs I4. At the forward end of lower plate I9 are a pair of spaced upstanding flanges I 5 which are secured thereto by means of threaded bolts I6. Flanges I5, as shown particularly in Fig. 4, have vertically extended slots I1. Projecting outwardly from the forward end of upper plate I2 are a pair of trunnions I8 which are adapted to project through and slide in elongated slots I1 so as to allow substantial parallelity of the plates I0 and I2, at varying spacings.

Projecting rearwardly from lower plate I0 are a pair of spaced handles I9; and projecting laterally outwardly from the rear edges of upper plate I2 are a pair of handles 20. Secured to the longitudinally extending, downwardly projecting side flanges 2I of lower plate I0, by means of bolts or the like 22, are a pair of laterally spaced castings 23. Castings 23 have outwardly projecting trunnions 24 which are equipped at their' ends with rollers 25 which ride on rails 8. Rollers 25 are secured to trunnions 24 by shoulder screws 25a. Castings 23 have 'downwardly and rearwardly projecting arms 26.-

A pair of guide arms 21 are shown as having their rear ends pivoted to the rearwardly projecting end of arms 26 (see Fig. 4). The front ends of guide arms 21 have a pivotal connection at 28 to opposing bosses 28a projecting inwardly from side members 2. Guide arms 2'I in cooperation with arms 26 and `trunnions 24 insure downward tilting of the forward end of the platten as it is rolled in a forward direction on rails 8. Furthermore, the guide arms 21 hold the platten against torque twisting movements as it is raised to and from the dotted line position indicated in Fig. 4. Journalled for limited rotary and up and down movements Vin bosses 29 are clamping rods 30 having laterally offset latch lugs or fingers 3l at their upper ends. A pair of clamping bars 32 are secured to, but spaced from the under surface of lower plate I0 by means of stud shafts 33 and adjustable wing nutsv 34. Interposed between the wing nuts and under surface of bars 32, as particularly shown in Fig. 9, are washers 35. Interposed between the clamping bars 32 and the under surface of bottom plate III are coil springs 36.

As shown particularly in Fig. 6, clamping bars 32 are in laterally spaced parallel positions, one located Vforwardly with respect to trunnions 24, and one spaced rearwardly with respect to trunnions 24. The extreme outer' ends of clamping bars 32 project outwardly beyond the side edges of bottom plate I0 and the clamping rods 39 are journalled in each end thereof for limited rotary and axial movements. Secured fast to the bottom ends of clamping rods 30 are collars 37. As shown in Figs. 8 and 9, the collars 31 which are secured to clamping rods 30 located forwardly of the trunnions 24, have lock lugs or'fingers 38 which are laterally offset andare at approximately right angles tothe latch lugs 3i carried by the upper ends of clamp'nlg'rods 30. It.wil1

be noted by reference particularly to Fig. 2 that the collars 31 positioned rearwardly of the trunnions 24, are not provided with lock lugs. It will also be observed that lock lugs 3B are adapted to overlie and rest upon the rails 8 in one position of the rotatable clamping rods 30. Carried by all four of the collars 31 areinwardly projecting laterally offset crank arms 39.

Centrally pivoted to the under surface of lower plate I0 by means of av headed bolt 40, and positioned adjacent the rear edge thereof is a lever 4 I. A5 shown, particularly in Figs. 1 and 2, lever 4I is positioned near the side edge of lower plate I0 so that its-outer end terminates in a handle portion 42 laterally outwardly of plate I0 and frame I. The inner end of lever 4I terminatesbeneath plate I0 approximately midway between the side edges thereof.

A pair of diverging links or rods 43 have ab common pivotal connection 44 at their rear endsi to the inner end of lever 4I. The forward ends' of rods or links 43 are pivotally connected at 45 to the two opposing crank arms 39 positioned forwardly with respect to the trunnions 24.

A pair of parallel links 46 have their for-- ward ends pivoted at 45, the same pivot as used by the forward ends of links 43, and have their' rear ends pivoted at 41 (see Figs. 6 and 4) to the crank arms 39 positioned rearwardly with respect to trunnions 24.

Secured by means of headed bolts or the like 48 to the under surface of bottom plate I0, adjacent its rear edge, is a tubular metallic casing 49 which has a reduced neck portion 50 into which is threaded a shaft 5I. The outer end of shaft 5I carries a hand wheel 52. The inner end of shaft 5I has an enlarged head 53 (see Fig. 6) which abuts against a reduced metallic outer end 53a of a fluid lled master bellows 54. Bellows 54 is of the type which expands and contracts longitudinally of its axis andv is provided with an internal coil spring which tends to cause it to expand to its longitudinal limits when the head 53 is in a retracted position. It will be observed that casing 49 is in approximate alignment with the lever 4I and has its reduced neck portion 50, shaft 5I and wheel 52 projecting laterally outwardly from the opposite side edge of lower plate I0. Connected to the inner end of master bellows 54, is a reduced tubular neck 55 to which is secured a conventional fill-cock 56. A tube 51 is connected between the tubular neck 55 and a central distributor 58. Radiating from distributor 58 are four pipes or tubes 59, as shown particularly in Figs. 2 and 6.

Referring now particularly to Figs. 5 and 9 it will be observed that four bellows, each bearing the number 60 are interposed between the lower plate I0 and clamping bars 32, one adjacent each of the ends thereof. Bellows 60 while somewhat smaller than the master bellows 54 are of the same general design. The upper ends of bellows 60, as shown in Figs. '1 and 9, are received in circular recesses 6I in theunder face of lower plate I0 and the lower ends of bellows 60 have reduced tubular necks 62 which t snugly into vertical openings 63 in the clamping bars 32. The outer ends of pipes or tubes, 59 extend, as shown particularly in Fig. 7, through openings 64 inthe opposing side edges of clamping bars 32 and make iiuid tight connections with the tubular necks 62.

Projecting outwardly from one side of frame member 2, immediately below one of the upstanding flanges 6, is a gas pipe 65 lon theend of which is a conventional valve 66. Valve 66 has conynected thereto a pipe (i1 whichleads @to ajgas vsource or `the like, :not shown. After :passing `through opstanding ilange I,pipefI51is'-bentat right angles and extends-upwardlyin close dproximity therewith `to a point approximately midway its height, where it ttedlan elbow 68. A perforated pipe 69 extends horizontally from elbow 68 totheopposite npstandingange 6 where it is provided with'a closedzend.

Positioned immediately over the horizontal gas .pipe 69 is an elongated metal ymeltimf. pot JI! which is equipped at :its ends with trurnnions 'IUI which are journalled f'orrotation `in the Lopposed upstanding danges `E adjacent their 'upper zends.

As shown in Fig. l, one. of the 'tiunnions 13k :pro-

jects through the flange 6 'and is equipped 'with a normally upstanding icrank .acting handle :12. As show-n trunnions 1t,1uponwhichthemetalpot rotates, are laterally oset with respect'. :to the axis of said pot so .as to causefpot. 10 to normally vtend to rotate in a direction kopposite :its spout T3. For the purpose `oi retaining'the :putin a level condition I provide v'an outwardly flanged upper edge 154i which overlaps/and rests'upon the topedges of the upstanding iangesli,l except when the spout edge is lowered.

A scorcher platten made up cidad-matched upper and lower plates 15 and 16 are .secu-red to the forward edges of .flanges '6 means of a pair of forwardly extending relatively elongated brackets 11 at their lower endaand .a pair of forwardly extending relatively shorter :brackets 15B; at their upper ends. 'The difference :in length of the brackets 11 and 'lill'zcauses the scorcher platten `to assume the inclined position :illustrated in Fig. 4.

Upper and lower scorcher plates Yl5. and'l are connected at their opposite. edges adfacent each corner by links 19 which have pivotal connections at their opposite ends with opposite plates. One of the links T9 vprojects upwardly and outwardly at one endV to. `provide a handle portion 80. It should'be observed thatthelinks 1tI are angularly disposed with `respect tothe plane of plates 15 and 16 so that when the harrdle portion 3Uv is depressed, .thelinlss-fare brought into a substantially right: angle position respect thereto, and: the platesare separatedilhut retained inl parallel relationship.

A-n important feature ofthe pouringspout'fl of metal box 'If is the vcentrally 'located rih for tongue 8l which causes the molten; 'to spread out andi be equallytdistributedl tol allzzparts of the mold cavityV into which the metal isxbeing poured.

Operationv As in any machine, oi this type, when it is desired to cast a slug, the upper and lower plates I0 and I2 comprising the platten, are first placed in the horizontal position indicated in- Eig.. l.

In my novel structure thev plates are then unclamped by pulling handle 42' of lever II'I toward the rear of' the machine Yaswindioated in Fig. 3, thus rotating clamping rods 3B approximately 90 to a position where the latch lugs 3| do notfover# lap the edges of upper plate If2` Simultanepus movement of clamping. rods, 3-,0f'isV made possible through links 43 and 6 and; their pivotal; oonnections with crank arms 351i.

At the same time that latch lugs 3I aremoved so as to unlock upper plates lIlIY :and I2, lock lugs 38 are moved intoapositionoverlying 58, thus locking the forward end of the plates against pivotal movements and enabling the upper plate i6 l*[2 .to .fbe opened `.vertically yon its hinges to 'the position @indicated in -Fig. V. -It :should be here mentioned-that 'the rear end-of the platten rests upon the top of Yrear `frame member 3 so vas to give it greater stability.V

Prior to the use Vof the cardboard mat or matrix, Aidentilied by the letter A, it is customary to vplace the same in a 4scorcher .platten where it is thoroughly dried. In my novel scorcher platten, which is heated by the same burner which melts the `stereotype metal, see Fig. 4, it is only necessary to pull the handle '80 to the dotted line position shown in Fig. -4 so as to raise the upper plate 15 `to the dotted line `position thereshown. The matrix is then placed between the inner surfaces of the plates 15 and 16, which surfaces are normally covered with asbestos 'or the like, and the action of gravity forces thel plates rmly together as the handle Sois released. When 'the matrix A is dry, it is placed on the upper surface H of lower plate ill). The closure vformi-ng strips or bars B are then laid around two sides andthe forward end of the mat, and the cover paper C placed vover the top of the. closure strips. Upperplate I2 is then lowered into the position indicated in Fig. '1, and handle-42 of lever 4-I moved in a forward direction vthereby simultaneously turning all four of :the clamping -rods 30 'approximately 90, in which position the latch lugs 3:I overlap the edges of upper plate i2, and the lock lugs 38 are swung free from a position overlying rails `8.

Priorto elevating the matrix to the metal pouring position' indicated in Fig. l vit is necessary to securely clampzplates HI andl I2 together. `To acxzoifrmlish this. rwith vmy novel device it is vonly necessary to turn hand wheel 52 in a direction to cause shaft 5l to move inwardly, thereby compressing bellows 54. When bellows is'compressed the ilu-id therein is forcedthrough pipe 51 intordistributorx58 and out through radiating tubes or pipes Eiland into the bellows 6d. Forcing, otfluid'intobellows-GUcauses them to elongate and exert 'downwardforce upon clamping bars 32. Downward movement of clam-ping bars 3? also causes downward movement of the clamping rods 30 and` latch lugs 3ll through rigidly attached collars 31. With the plates I0 and I-Z securely locked together it is `now safe to place them in pouring position. This is done by merely lifting upward on handles :I9f or- 201 Whenthemetal has beenpoured into the mold cavity-and allowed to cool suiiiciently, the plates Vttl and YI2 are again returned' to a horizontal positioncand hand` wheel 52 turned in a direction to eitherzallow'or cause master bellows-5ft to ex- .pand, thereby simultaneously causing the four smaller: bellows [i0 tofcontract. 'Contractionof .the-smaller bellowsnoffcourse, releases the pressure on the' clamping bars- 32 andy clamping rods '3.0. Clamping latches; SIlma-y then be turned ap- K proximately 905x tota point where they do not Ycin/en plate C;

Adjustment of thumb nuts-3ftso as vto-vary the rtension-of coil: spring 36.. makes it possible' to obtain such a deg-reeroiruniformity of pressure novell-device the slugs cast thereby do not vary in thickness more than one thousandth of an inch.

With machines of this type it is often desirable and necessary to cast slugs of various thickness and for this purpose I provide a reversible seat for latch lugs 3l in the form of cross sectionally circular inserts 83 screwed into the upper face of upper plate l2 by means of Allen screws 84 or the like. Seats 83 have one segment thereof 85 of a low level and the other segment 86 of a high level. When a thick slug is to be cast, the latch lug 3l is allowed to rest on the lower segment 85 whereas if a thin slug is to be cast the seat 83 is reversed so that the latch lug 8l sit upon the higher segment 86.

What I claim is:

1. In a device of the kind described, a frame having laterally spaced Walls, elongated horizontally disposed rails secured to the walls of said frame in-opposed relationship, a rectangular casting platten made up of lower and upper superimposed plates, a hinged connection between said lower and upper plates, roller equipped trunnions projecting from opposite sides of said lower plate and mounting said plates for limited sliding and tilting movements on said rails, a pair of clamping rods carried by said lower plate and positioned on opposite sides thereof forwardly of said trunnions, a pair of clamping rods also carried bysaid lower plate and positioned on opposite sides thereof rearwardly of said trunnions, laterally oifset latch lugs on the upper ends of said clamping rods, means for simultaneously turning said clamping rods to and from operative positions wherein the latch lugs carried thereby overlap the edges of the upper plate, means for simultaneously applying uniform clamping pressure to the clamping rods whereby to securely clamp said upper and lower plates together when the latch lugs are in operative position, and a lock lug carried by one of the forwardly positioned clamping rods and adapted to overlie an edge of the adjacent rail and lock said platten against tilting movements when the rst mentioned latch lugs are in inoperative position.

2. In a device of the kind described, a frame having laterally spaced walls, elongated horizontally disposed rails secured to the walls of said frame in opposed relationship, a rectangular casting platten made up of lower and upper superimposed plates, a hinged connection between the forward ends of said lower and upper plates, roller equipped trunnicns projecting from opposite sides of said lower plate and mounting said plates for limited sliding and tilting movements on said rails, a pair of clamping rods carried by said lower plate and positioned on opposite sides thereof, forwardly of said ytrunnions, a pair of clamping rods also carried by said lower plate and positioned on opposite sides thereof rearwardly of said trunnions, laterally offset latch lugs on the upper ends of said clamping rods, means for simultaneously turning said clamping rods to and from operative positions wherein the latch lugs carried thereby overlap the edges of the upper plate, hydraulic means for simultaneously applying uniform clamping pressure to the clamping rods whereby to securely clamp said upper and lower plates together when the latch lugs are in operative position, and lock lugs carried by the forwardly positioned clamping rods overlying the .edges of the adjacent rails and locking the forward end of said platten against downward tilting movement only when the Vfirst mentioned latch lugs are in inoperative position.

8 3. In a device of the kind described, a frame, a rectangular platten comprising upper and lower hinged plates mounted on said frame, trunnions projecting from the opposite sides of said lower plate and mounting said platten for limited sliding and tilting movements in said frame, a pair of clamping rods carried by the lower plate and positioned on opposite sides thereof forwardly of said trunnions, a pair of clamping rods carried by said lower plate and positioned on opposite sides thereof rearwardly of said trunnions, latch means on said clamping rods, means for simultaneously turning all ofsaid clamping rods to and from operative positions wherein they overlap the edges of said upper plate, a pair of transverse clamping bars carried by said lower plate and spaced from the under surface thereof, the outer ends of said clamping bars journalling the lower ends of said clamping rods for rotary and axial movements, stop collars on the lower ends of said clamping rods immediately underlying the ends of said clamping bars, a source of iiuid pressure connected to said lower plate, and devices interposed-between said clamping bars and said lower plate and operatively connected to receive fluid pressure from said source, whereby to clamp said plates together when said latch means is in operative position.

4. In a device of the kind described, a frame, a rectangular platten comprising upper and lower hinged plates mounted on said frame, trunnions projecting from the opposite sides of said lower plate and mounting said platten for limited sliding and tilting movements in said frame, a pair of clamping rods journalled in opposite side edges of said lower plate and positioned forwardly of said trunnions, a pair of clamping rods journalled in the opposite side edges of said lower plate and positioned vrearwardly of said trunnions, latch means on said clamping rods, means for simultaneously rotating all of said clamping rods to and from operative positions wherein the latch means carried thereby overlap the edges of said upper plate. a pair of laterally spaced transverse clamping bars carried by said lower plate and spaced from the under surface thereof, the outer ends of said clamping bars journalling the lower ends of said clamping rods for rotary and axial movements, stop collars on the lower ends of said clamping rods immediately underlying said clamping bars, a master fluid pressure operated bellows connected to said lower plate, and actuating bellows interposed between said clamping bars and said lower plate and operatively connected to receive fluid pressure from said master bellows whereby to clamp said plates together when said latch means is in operative position.

WAYNE O. PETERSON,

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 352,447 Caps Nov. 9, 1886 457,897 Cummings Aug. 18, 1891 466,366 Partridge Jan. 5, 1892 1,536,089 Fisher May 5, 1925 1,863,480 f Huck June 14, 1932 1,981,131 Wagner Nov. 20, 1934 2,070,488 Korsmo Feb. 9, 1937

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