US2083911A - Liner for type slug casting machines - Google Patents

Description

June 15, 1937. J. W, HEMLIN ET AL 2,083,911

LINER FOR TYPE SLUG CASTING MACHINES Filed July 5, 1934 jig! Patented June 15, 1937 UNiTED srsrss PATENT OFFiiQE Jiohan Walfrid Hemlin, Stockholm, and Carl Arvid Andersson, Sundsvall, Sweden Application `luly 3, 1934, Serial No. 733,550 In Germany July 17, 1933 4 Claims.

Our present invention relates to type slug casting machines and more particularly to means for adjusting the length of the type line in such machines.

The principal `object of our invention is to provide an improved movable liner for use in combination with a mold for a type slug casting machine and to eliminate the drawback of liners hitherto used which resides in the necessity of removing theV cap of the mold every time it is desired to vary the length of tie line, a procedure which, of course, is cumbersome and time-wasting.

Another object of our invention is to provide a tool to be used in combination with our new movable liner to facilitate the correct adjustment of the liner.

With these and other objects in view our improved liner which is in known manner reciprocable in the longitudinal direction of the slo-t of the mold is adapted to be held in position by frictional engagement with the opposed sides of the slot, said frictional engagement being, preferably, effected by means of a spring secured to the liner and engaging one side. of the slot, preferably the side which is provided with the usual grooves opening on the edge of the slot.

On casting the slug the liner will be secured to the slug by the casting metal entering a recess provided in the liner, simultaneously as the metal enters the grooves on the side of the slot, thereby preventing displacement o-f the slug.

Our new tool comprises a graduated bar and a member slidable thereon and having a portion to be brought into engagement with the liner, e. g. the recess thereof and abutting surfaces to be brought into engagement with the mold and a stationary end forming means or liner.

Our invention will be more fully described with reference to the accompanying drawing in which connection also other features characterizing our invention will be set forth.

In the drawing:-

Fig. 1 is a front view of a mold having our new movable liner inserted into the mold slot.

Fig. 2 is a top View of the mold with the cap removed and with a tool shown by dash and dotted lines for the adjustment of the movable liner.

Figs. 3, 4, and 5 are a top plan View, a side end View and a front end view, respectively, of the movable liner.

Fig. 6 shows the movable liner connected with part of a slug.

Figs. '7, 8, and 9 are a top plan View and end views, respectively, of the adjusting tool.

The movable liner consists of a metal plate I and a spring 2 connected to the plate I, said spring 2 being somewhat curved in direction from 5 the plate surface so that the central part of the spring rests against one side wall of the mold slot 3. The thickness of the plate I is fitted to the width of the slot 3 of the mold d, so that the plate I can readily slide in the said slot but, owing to 10 the pressure of the spring 2 against the wall of the slot, is prevented from unintended displacement. The plate I is provided with a recess 5 extending over the whole width of the liner and limited at one side by the thicker head portion of the plate and at the' other side by anged portions 6 o-f the plate. The cast type metal iills out the slot 5 so that the slug 'I (Fig. 6) to the left of the movable liner (Fig. 1) rigidly engages said liner but may bereadily removed from same at the removal of the liner from the mold. The usual grooves 8 in one side wall of the mold slot are filled by the cast metal of the slug l so that corresponding ribs 9 are formed on the slug which ribs by engagement in the grooves 8 hold the slug and the movable liner in position. The width of the recess 5 in the movable liner is greater than the distance between two consecutive grooves 8 so that in every position of the liner the recess embraces at least one groove 8 in the side wall of the mold slot, causing the movable liner to be rmly secured in position afte the metal has solidified in the recess 5. f

The movable liner I is inserted into the mold slot 3 from the front side of the mold and is 5 thereafter moved to a position corresponding tothe desired length of the line. This lateral displacement may, of course, be performed in any suitable manner, but, preferably, the tool illustrated in Figs. '7 to 9 may be used for this pur- 40 pose. This tool consists of a graduated bar IU and a member I I slidably mounted thereon. The sliding member I I is provided with a latch I2 which by the action of a spring is maintained in engagement with tooth spaces I3 on the edge 45 of the bar I0. The adjusted position of the slidable member II is indicated by a pointer Ill cooperating with the scale on the bar. The slidable member is also provided with a tongue I5 adapted to engage the recess 5 of the movable liner I. At its one end (the right one in the drawing) the bar is provided with a projection I6 having an abutting edge I'I at its end and a shoulder I8 on its rear side, said shoulder being in alignment with an abutting edge I9 on the slidable member II. The graduation on the bar I0 may indicate the length of the line in known units and is dimensioned with respect to the usual shrinkage of the type metal so as to obtain the proper length of the cast and cooled line.

For adjusting the desired length of the line the movable liner is inserted into the mold slot 3, as shown in Fig. l. After adjusting the slidable member of the tool (according to Fig. '7 on 14 known units) the tongue I5 of the tool is put into the recess 5 of the movable liner I. The abutting edge i9 of the slidable member II and the shoulder I8 on the projection I6 are brought into engagement with the front face 20 of the mold and the tool is moved to the right until the abutting edge I'i engages the xed end forming means or liner 2| at the right end of the mold slot.

During the casting of the slug the movable liner is secured in the slot by the pressure of the spring 2 against the wall of the slot. A slug is formed to the left of the movable liner I (Fig. 1) between same and a xed liner 22, said slug with its right end portion engaging the movable liner I so as to secure same in position during the subsequent casting of the type lines.

What we claim isz- 1. The combination with a mold having a slot with opposed sides and spaced grooves on one side opening on the edge of the slot, of a movable liner having a spring secured thereto adapted frictionally to engage one side of the slot so as to maintain the liner in engagement between the opposed sides of the slot, said liner being reciprocable in the longitudinal direction of the slot and having a recess adapted to be lled out with type metal to be rigidly connected to the slug at the side of the liner, said recess having a width greater than the distance between two consecutive grooves.

2. The combination with a mold having a slot with opposed sides and grooves on one side opening on the edge of the slot, of a movable liner reciprocable in the longitudinal direction of the slot and having a transverse head portion, a transverse ange having an opening and a recess between said head portion and said iiange, said recess being adapted to be iilled out with type metal to be rigidly connected to the slug outside said ange, and a spring secured to said head portion adapted rictionally to engage the grooved side of said slot so as to maintain the liner in engagement between the opposed sides of the slot.

3. A movable liner for the mold of a type slug casting machine adapted to be adjusted by means of a tool, there being an open slot between the sides of said mold when the latter is in assembled condition, said liner comprising a plate inserted through said slot between the sides of said mold and movable therebetween longitudinally with respect to said slot to determine the length of a cast line, and being provided with a recess portion upon said plate opening in the same direction as the open front of said slot and adapted to cooperate with and be engaged by said tool whereby to effect movement of said plate to a desired position longitudinally of said slot, while said mold remains in assembled condition.

4. A liner for a type slug casting mold according to claim 3, wherein molten metal from a cast slug extends into the recess portion upon removal of the tcol, and upon congealing is rigidly unitary and integral with the metal of said slug.

JOHAN WALFRID HEMLIN. CARL ARVID ANDERSSON.

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