US1494251A - Mold for line-casting machines - Google Patents

Description

. 1,494,251 G. A. JONES 1 MOLD FOR LINE CASTING MACHINES Filed Dec. 12. 1922 INVENTOR .fines ww/aw f ATTORNEY Patented May 13, 1924.

GEORGE A. JONES, O'F BALDVJ'IN, YORK, A'SSIGNOR T ENTERTYPE CORPORATION,

' 0F BROOKLYN, NEW YORK, A CORPORATION OF NEW YORK.

MOLD FQR- LINE-GASTING MACHINES.

Application filed December 12, 1922. Serial No. 606,491.

To all whom it may concern Be it known that I, G-nonen A. JoNEs, a citizen of the United States, residing at Baldwin, in the county of Nassau and State of New York, have invented certain new and useful Improvements in Molds for Line- Casting Machines, of which the following is a specification.

The present invention relates to improvemerits in line casting machines and more particularly to those of the class employing a mold in which a slug 'ortype bar is cast, the mold usually comprising a body which is mounted on a mold wheel or disk,

a cap, and a. pair of liners which are interposed between'the body and cap and determine the thickness or body size and the length or measure of the slugs or type bars cast therein, one of the liners being adjustable or interchangeable-with other liners of other lengths, whereby the length or measure of the slugs or type bars may be varied, as required.

One of the primary objects of the invention is to provide novel and improved means for clamping the mold cap andliners to the mold body, whereby these parts are securely and accurately held. in proper relation, so that they are not liable to displacement incident to the ejection of the slugs or type bars, or other operations, these results being attained particularly in those instances where the adjustable or interchangeable liner extends inwardly to or beyond the longitudinal center of the mold for the cast of SlflflfS or type bars of very short length. Furthermore, these results are at tained without distort-ingrthe mold wheel or disk on which the mold is carried.

Another primary object of the invention is to provide a mold of the class described which is capable of producing satisfactorily slugs or type bars which are without the ribs which are usually produced on one of the sides of the ordinary slugs or type bars;

or in other words, it is capable of producing slugsor type bars, the sides of which are parallel and ribless, the liners being: provided with means for preventing displacement of the slugs or type bars within or from the mold until they are ejected therefrom at the proper time, the liners being so clamped between the mold cap and body as to prevent displacement of either of them, incident to the ejection of the slug or type bar when this operation is performed by the ejector.

To these and other ends, the invention consists in certain improvements and com b-inations and arrangements of parts, all as will be hereinafter more fully described, the features of novelty being pointed out particularly in the claims at the end of the specification.

In the accompanying drawing Figure 1 is a perspective view of the cap of a mold constructed in accordance with. the present invention;

Figure 2 is a front elevation of a mold constructed in accordance with the present invention, the same being shown applied to a mold wheel or disk of the kind commonly used. in line casting machines;

Figure 3 is a detail view showing a slug or type bar and the adjacent end of one of the liners; and

Figure 41 represents a section taken transversely through the mold and the mold. wheel, on the line 44 of Figure 2.

Similar parts are designated by the san'ie reference characters in the several views.

The presentinvention is applicable generally to line casting machines of various types adapted to produce slugs or type bars, the invention being more particularly applicable to line casting machines of the linotype class wherein,-as is well understood by those familiar with the art, the mold receives a charge of molten metal from the mouth-piece of a metal. pot which is brought against the hack ofthe mold, while a line of matrices is presented to the front of the mold, the slug or type bar thus cast in the mold being ejected therefrom by a.reciprocatory ejector blade which enters the rear side of the mold cavity and pushes theslugor type bar forwardly and thus out of the mold. The preferred embodiment of the invention is shown in the present instance as applied to a mold especially adapted for use in connection with line casting, machines of the class just described, but it is to be understood that the invention is not re stricted to "the precise construction shown, as equivalent constructions are contemplated and these will be included within the scope of the claims.

In the present instance, the mold comprises a mold body 1 which is suitably secured to a mold support 2, this, in the present. instance, being the rotatable mold wheel or disk of the kind used in line casting machines of the linotype class and which serves to carry the mold to the casting position for the casting of a slug therein and then to the ejecting; position for the ejection of the slug therefrom. The mold also comprises a mold cap 3 and liners 4: and 5, these liners being interposed between the mold body and cap and determining the thickness or body size and the length or measure of the slugs or type bars which are cast in. the mold cavity 6 which is formed between the inner ends of the liners and between the mold body and cap. In molds of this general class, the lefthand liner 4 is usually adjustable longitudinally or isinterchangeable with other liners of different lengths, so that the length of the mold cavity or slot 6 may be adjusted according to the measure ot the slug or type bar, as may be required. It will be understood that in using a mold oi this type in line casting machines of the linotype class, a line of matrices is presented to the front of tllG'lUOlCl or to the left-hand side of the mold, as it appears in Figure t, and that the molten metal is injected into the mold cavity or slot from the mouthpiece of a. metal pot which is presented to the rear side of the mold or to the righthand side of the mold, as it appears in Figure 4.

The mold cap, liners and body are clamped and thus secured together at the ends of the cap and body, by suitable means which enables the mold cap to be removed, liners of different thicknesses or lengths to be in serted. and these elements clamped and thus secured together. Preferably, bolts 7 are employed for this purpose, these bolts extending; through the ends of the mold cap and body and the outer ends of the inter posed liners and being adjustable for the purposes above mentioned. The bolts 7 or other clamping: means acting at the ends of the mold cap and body serves satisfactorily to hold the liners in place when both liners are short, but such clamping means is incapable of performing-this Function properly when a relatively long liner is employed which extends to or beyond the middle the mold, as is the case, for example, with the liner 4, which, as shown in Figure 2, extends beyond the center of the mold, in order that the mold slot or cavity 6 may be set for the casting of slugs or type bars of short. measure. hen a long" liner, like the liner 4,- in Figure 2, is employed, the mold cap, it constructed in the usual way, will bend or become sprung slightly under the strain imposed upon it by tightening of the clamping bolts 7, so that while the intermediate portion or the cap bears on the inner end of the liner 1-, the greatest pressure is applied to the outer ends of the liners l and 5 which are in immediate proximity to the clamping bolts, and hence the diminished clamping action produced on the inner end of the liner 4;, in consequence of the bending or springing of the cap, is insufficient to maintain the liner 4 in its accurately set position, and hence such a liner would be subject to displacement, resulting in the production of faulty slugs or typebars. The present invention pro vides means for effectually maintaininglong liners, like the liner at in the present instance, from displacement relatively to the cooperating parts of the mold, and, moreover. the means provided by the present invention is capable of accomplishing this result without straining or distorting the mold carrying wheel or disk. Preferably and as shown in the present instance, this result is accomplished by forming a slot or other suitable space 8 between the wall 9 ot the mold, cap which defines the top wall ot the mold cavity and the web or rib 10 which is united to the top of this wall, and by pro viding a screw 11 of sutiicient size, or other suitable means for relatively spreading the intermediate portion of the wall 9 away from the web or rib 10, so that the lower face of the wall 9 at a point midway of its length will be bowed or ofi'set slightly below the end portions of this face. When a screw, such as the screw 11 is used for this purpose, it is threaded into the intermediate portion of the web or rib l0 and its ends abut against the upper side of the wall 9 at or approximately midway of its length, as shown, the screw being tightened in order to ofiiset or how downwardly the lower face of" the wall 9 at a point intermediate its length, By constructing: the mold cap substantially as just described. relatively long liners, such as the liner 4: shown in Figure 2, can be immovably held in accurately set portion, notwitistanding that the liner may extend beyond the center of the mold. lVhen such a liner is to be used in the mold, the screw 11, or other means used tor the purpose, may be operated to bend or spread the middle portion of the wall 9 to a slight degree downwardly from the web or rib l0, and after the proper liners have been inserted, the bolts 7 are tightened. The downward ct't'set given the middle portion of the wall 9 of the mold cap causes this portion of the mold cap to bear on the inner end of the liner which extends to or beyond the center or the mold and as the bolts '7 are tightened, the ends ofthe cap are brought into clamping engagement with the outer ends of the lil'ier's, the liners being thereby secured with in the mold, and the inner end of the long liner, like the liner 4 in the present instance, is clamped by a pressure which is greater than that applied to the outer ends of the liners, and hence edgewise displacement of the inner end of the long liner, under'action of the ejector in ejecting a slug or type bar from the mold, or from other causes, is effectually prevented.

The present invention also enables slugs or type bars to be produced,wi'thout ribs on either side. Herctofore it has been the practice to employ a mold cap having grooves formed in its lower face at a right angle to the length 'of the mold slot, so that the type bars cast therein have" ribs which are trimmed to bring the sides of the type bar into parallelism. Type bars having ribs of this kind are suitable for some classes of composition, but there are other classes of composition which require type bars which are smooth on both sides orwhich are without ribs on either side. For example, it is necessary in some instances to cut the type bars so that they may be fitted or pieced around initial letters, blocks or the like, and the cutting of such type bars at points between adjacent ribs produces an overhang beyond the last rib on the type bar, causing difficulties to arise, and it is desirable to use type bars which have no ribs on either side, this being especially true, where type bars are to be cast with rules or borders on the edge and require cutting and mortisin'g; Type bars with parallel sides and without ribs could not be produced satis-- factorily in molds of the kind commonly used, but without grooves, as the smooth rectangular mold cavity or slot that would be required would permit the type bar to attach itself to the line of matrices against which it was cast and the type bar would be withdrawn from the mold when the mold receded from the line of matrices, thereby interfering with the regular performance of the trimming, ejecting and subsequent operations of the machine. The present inven: tion provides a mold construction which enables ribless or smooth-sided type bars to be produced satisfactorily in line casting machines of the class now generally used, means being provided for immovably holding the type bar within the mold until ejected therefrom by the operation of the ejecting mechanism of the machine. Pref.- erably and as shown, the inner ends of the liners at and 5 are provided with a suitable number of inwardly extending teeth or projections 12 and 13 which becomeeinbedded in the respective ends of the type bar which is cast in the mold. These'teeth or projections may be of any suitable shape, but chisel edge projections extending parallel to the plane of the-mold slot and transversely to the length thereof-are preferably used, so that these projections will readily cut themselves through the respective end edges of the type bar when the latter is forced out of the mold by the ejecting mechanism. The inner ends of the liners may also be formed with the usual projections 14? and 15, which are located adjacent to the rear side of the.

mold and serve to prevent rearward displacement of the type bar under the force applied by the mouth-piece of the metal pot in detaching itself and moving rearwardly away from the mold. These projections 14 and 15 on the liners form recesses-16 and 17 in the ends of the type bar, as shown in Figure 3, the type bar in this figure being designated T, and it is preferable toso construct the teeth or projections 12 and 13 that they project no further into the ends of the type bar than do the recesses 16 and 17. 1V hen the type bar is pushed forwardly and thus ejected from the mold by the operation of the ejecting mechanism of the machine, the teeth or projections 12 and 13 cut their way rearwardly through the respective end edges of the type bar, the resulting grooves formed in the ends of the type bar leading into the recesses 16 and 17, formed in the rear corners of the type bar by the projections 14 and 15. The format tion of these grooves, however, does not alter the accuracy of the length of the type bar, as these grooves are contained within the length of the type bar, as determined by the distance between the inner ends of the liners, and the slight burs or edges thrown up by the cutting through of the projections 14 and 15 are contained within the recesses 16 and 17. The force applied to the liners of the mold, incident to the cutting of the teeth or projections 12 and 13 through the end edges of the type bar while the latter is being ejected, is effectually sustained by the liners when the latter are appropriately clamped in the mold, as, for example, by the clamping means substantially as hereinbefore described.

By so forming the cap that'the interme diate portion of the rib and the base on which the mold face is formed are relatively 1 unattached, divided or split so that they are capable of being spread apart, and providing suitable means by which these parts are relatively spread apart in a direction transverse to the mold face on the under side of the cap, the intermediate portion of the mold face on the cap can be offset or deflected downwardly or toward the face of the mold body sufficiently to produce, when the end clamping devices are tightened, the necessary "pressure upon the inner ends of the liners toprevent displacement thereof during the operation of theejector in pushing the slug or type bar from the mold, this being particularly necessary when a liner is used which extends inwardly to or beyond the center of the length of the mold. Inasmuch as this offsetting or deflection of the face of the cap is produced by means which acts within the cap itself, no strain is imposed on the mold wheel or support which would tend to distortit.

By providing the inner ends of the end.

liners with teeth or projections substantially as herein described, it is made possible and practicable to cast slugs or type bars which are ribless or have parallel. plane sides, as these teeth or projections function to prevent forward movement or displacement of the slub cast in the mold until the ejector of the machine operates in the regular way to remove'the slug from the mold. The improved means for clamping the end liners in place, as hereinbefore described, is particularly suitable for use in conjunction with liners havingsuch slug-retaining teeth, as the liners will be held so securely in place as to avoid their displacement under the force applied by the ejector inremoving the slug from the mold.

I claim as my invention 1. A mold of the class described comprising a body part and a cap part having op posed faces to receive liners and to form a mold cavity between them, one of said parts having portions capable of being relatively spread apart to deflect the middle portion of its face toward the opposed face of the other part, meansfor relatively spreading the portions of said part, and means for clamping the ends of said parts against liners interposed between them.

2. A mold of the class described comprising a body and a cap having faces to receive liners between them and to form a mold slot. the cap being partially divided in a longitudinal plane which is substantiallyparallel to the mold slot, means for relatively:spreading apart the divided portions of the cap, and means for clamping toward each other the ends of the cap and body. I i

3. A moldof the class described comprising a body and a cap having faces to define the sides of a' mold slot, and liners adapted to be interposed between the faces of the body and cap and to define the ends of the mold slot, the cap being partially split longitudinally in a plane removed from the face of the cap, means for relatively spreading the split portions of the cap in a direction transversely of its face, and clamping means located to act on the ends of the cap.

1. A mold of the class described comprising a mold body and cap having faces to define the bottom and top of a moldslot, liners adapted to be interposed between said faces and to define the ends of the mold slot, means operative wholly within the cap for offsetting the intermediate portion of its face relatively to the end portions of said face in a direction toward the face of the mold body, and clamping means cooperative with the ends of the cap to clamp the same and the liners against the body.

A mold of the class described comprising a mold, body and cap having faces to define the bottom and top of a mold slot, liners adapted to be interposed between said faces and to define the ends of the mold slot,

the cap embodying a, base on one side of which. the face of the cap is formed and a rib projecting edgewise from its opposite side,.the ends of the rib being joined to the end portions of the base and the interme diate portion of the rib being unattached relatively to the intermediate portion of the base, meansfor spreading apart the intermediate portion of the base relatively to the intermediate portion of the rib, and clamping means to act on the ends of the cap to clamp the latter and the liners against the body. I h

6. A moldof the class described comprising a body and a cap having faces to form the bottom and top of a mold slot, liners adapted to be interposed between said faces and to define the ends of .such slot, the cap being divided longitudinally for a part of its length, means connecting the divided portions'of the cap for relatively spreading themin a direction transversely of thefacc of the cap tov offset the intermediate portion of said face toward the face of the body, and clamping means to cooperate with the end portions of the cap to clamp the same and the liners against the body.

7. A mold of the class described comprising a body, cap and end liners which define the sides and ends of a mold cavity, the inner endsof the liners having means for holding a slug in the mold cavity from dising a body, a cap and end liners which form a mold cavity having plane parallel sides, and projections on theinner ends of the liners adapted to become embedded in the ends of a slug cast in the cavity and to hold the slug against edgewise displacement in either direction transversely of the mold. i

9. A mold of the class described compris ing a body, a cap, and end liners which form a mold cavity having plane parallel side walls, the liners having teeth projecting inwardly from their inner ends into the cavity. to become embedded in the respec tive ends of a slug cast therein, said teeth being adapted to cut through the respective ends of the slug when the latter is ejected from the cavity.

10. A mold of the class described eon1prising a body and cap having plane parallel faces to define the top andbottom walls placement in either direction laterally there 8. A mold of the class described compris- 1 ing from their inner ends adapted to become embedded in the ends of the slug and to prevent displacement of the latter in an op- 10 posite direction.

In testimony whereof I afiix my signature.

GEORGE A. JONES.

Images