US2642180A - Slug casting machine - Google Patents

Description

June 1953 J. R KRUSBERGER SLUG CASTING MACHINE 4 Sheets-Sheet 1 Filed Sept. 20, 1949 J. F. KRUSBERGER 2,642,180

' SLUG CASTING MACHINE June 16, 1953 4 Sheets-sheaf 2 Filed Sept. 20. 1949 IN VENTOR June 16, 1953 J RKRUSBERGER I 2,642,180

SLUG CASTING MACHINE Filed Sept. 20, 1949 I I 4 Sheets-Sheet 3 INVEN TOR TTORNEYg J. F. KIRUSBERGER 2,642,180 SLUG CASTING MACHINE June 16, 1953 4 Shets-Sheet 4- Filed Sept. 20, 1949 I 'INVBNTOR ATTORNEYS Patented June 16, 1953 SLUG CASTING MACHINE Joseph F. Krusberger, Brooklyn, N. Y., assignor to Mergenthaler Linotype Company, a corporation of New York Application September 20, 1949, Serial No. 116,700

This invention relates to slug casting machines, such as Linotype machinesof the general organization represented in United States Letters Patent to O. Mergenthaler No. 436,532, wherein circulating matrices and expansible spacebands' are composed in line 'by the manipulation of a keyboard, the composed line transferred to a slotted mold for the casting of a type bar or slug, and the matrices and spacebands thereafter separated and returned by a distributing mechanism to the magazines from which they started. More particularly, the invention relates to machines of this character equipped with quadding and centering devices, in order that the machine may handle not only lines of full length as ordinarily, but in addition lines of less than full length (regardless of their actual length), lines of the latter kind in machines of this character being'composed merely with the matrices necessary for the printed matter and indented at the left or at the right end of the line or centered as desired.

A machine so constructed is disclosed in the Frolander Patent No. 1,971,400, dated August 28, 1934. In the machine therein disclosed the movable supports for the two line clamping jaws '(the latter being made long enough to perform their required functions of closing the mold slot at the front) are actuated through two distinct trains of connections from a vertically movable member controlled from the main shaft of the machine. When both jaw supports are connected to the member, they are, prior to casting, moved equidistantly toward each other until arrested by the contact of their respective jaws with the opposite ends of the composed line (for centering) and later, after casting, restored to their original positions of maximum separation. Due provision is made for disconnecting either the right-hand jaw or the left-hand jaw from the vertically movable member, so that one or the other may be operated independently for quadding at the right or at the left as may be desired. When both jaws are disconnected, as they may be, the machine is free to function in the usual way, the right-hand jaw being left normally stationary and the lefthand jaw being adjust- 8 Claims. (Cl. 199-50) to ascend and restore the clamping jaws to their positions of maximum separation.

An improvement upon the aforementioned toggle clamp is disclosed in the Mead Patent No. 2,092,220, dated September 7, 1937, wherein the grip element is allowed a limited degree of movement while still in engagement with the vertically movable member to allow the latter to be actuated upwardly for a small distance to permit the slight backing oil of the line clamping jaws before the line has been lifted clear of the jaws,

the grip element later (after the line has cleared the jaws) being disengaged from the vertically movable member to permit it to ascend to its uppermost position and return the jaws to their positions of maximum separation.

The disclosures of the Frolander and Mead patents referred to, contemplate the closing of the jaws against the composed line under pressure and thereafter effecting a positive separation of the jaws for a limited distance for the free expansion of the spaceb-ands in justifying the line, the justification pressure being sufiicient as in regular machine operation) to spread out the line tightly between thejaws. It is not'the practice, however, to justify quadded line's, whether or not they contain spacebands, except in certain instances such as for so-called straight-line locked in its downwardly moved position by means of a toggle clamp actuated by a lost motion device included in theoperating connections and, after a casting operation, the toggle clamp is released, allowing the vertically movable member indention, when the jaws are backed oil from line contacting position to abut against fixed stops. In the absence of justification, the line closing pressure of the jaws is not always great enough to compress the matrices in the line sufficiently to prevent metal squirts or the production of hair lines on the cast slug. For example, the line clamping jaws are supported loosely enough so that under normal line closing pressure they may contact the end matrices of the.

line in a tilted position and thus fail to engage the matrices throughout their full height. This leaves a space at one or both ends of the line between the end matrices and the matrix engaging faces of the jaws through which metal can squirt when injected into the mold for casting. The other difiiculty, the production of hair lines on the slugs, may be due to several causes, chief among which is that arisingfrom the fact that as a result of continued use the matrices warp or otherwise become bent, or in the case of the thinner matrices they may not be straight even when new, and, hence, they do not stand in sidewise contact throughout their full extent when composed in line and must be compressed into tight engagement. 'If this were-true of one or two matrices only, the line closing zpressure might squeeze the line sufficiently to straighten the matrices, but when one-half or more of the total number of matrices in the line must be straightened to obtain a tight lock-up, as is frequently the case, the line closing pressure may be far from adequate.

To obviate this condition, it has been proposed (see Hilpman Patent No. 2,255,254) to'move the,

improve upon the quadding and centeringdevices of the earlier patents cited, with the idea of simplifying the mechanism heretofore employed in performing the various functions mentioned and of rendering the quadding and centering operations more effective. These improvements will best be understood from the detailed description to follow.

Referring to the drawings:

Fig. 1 is a front elevation of the casting mechanism of a Linotype machine, equipped with the present improvements, certain portions being broken away and other portions shown in section to reveal structural details; 7

Fig. 2 is a vertical section taken on the line 2-2 of Fig. l; a

Fig. 3 is an end elevation (taken from the left in Fig. 1) of the quadding and centering mechanism as shown in normal position and set for a quadding operation;

Fig. 4 is a front elevation of the parts shown.

in Fig. 3; r

Fig. 5 is a horizontal section taken 5-5 of Fig. 4;

Fig, 6 is a vertical section takenthrough the on the, line locking devices for the jaw operating rod and,

The matrices i and the expansible spacebands 2 are composed in line in an assembler in the usual way and transferred to a. vertically movable transporter or first elevator 3, which thereupon descends to position the line between the left-hand jaw i and the right-hand jaw 5 (see Figs. 1 and 2) and in front of a slotted mold 6 indicated by the dotted lines in Fig. 2. The mold then advances from the rear into contact with the line and with the two jaws for the slug casting operation, the line, priorto casting, being alined and justifiedin the same manner aswhen the machine is being operated under the usual conditions. Thereafter, the mouthpiece of a melting pot (not shown) is advanced from the rear into contact with the rear face of the mold and molten metal then injected into the mold for the casting'of theslug against thecomposed' line. Afterthe slughas been cast, themelting 4 pot is moved rearwardly out of contact with the mold and the latter likewise moved rearwardly out of contact with the composed line, whereupon the mold is carried around from its horizontal casting position to a vertical ejecting position by a three-quarter rotation of the mold disk 1, the first elevator in the meantime being raised to deliver thecomposed line to the matrix and spacebanddistributing devices and finally coming to rest in its original or line receiving position.

For movement to and from casting position, the melting pot is mounted upon a pair of supporting arms 8 (only one of which is shown in the drawings) pivoted at their lower ends upon a transverse rode. in the fixed vise frame ID.

As more fully shown and described in the Frolander patent above referred to, the two jaws A and, 5 are mounted for movement in the vise frame in the customary manner, being carried by H which may be connected at its upper end to the respective jaws through the medium of two small but oppositely disposed bell crank levers l2 and I3 pivoted at M and I5 to the vise frame, the longer arms of said levers being connected by short links it and H to the supporting blocks for the respective jaws, and the shorter arms of said levers bein arranged for connection to or disconnection from the rod H. According to this arrangement,.when the rod H is moved downwardly from its uppermost position (which is its normal position of rest), it will move the two jaws equidistantly toward each other (assuming both to be connected to the 'rod) until they contact with the opposite ends of the composed provision is made for such varied movement of the rod in its actuating connections in the usual way.

As also more fully shown and described in the Frolander patent, asuitable device in the nature of a segmental grooved member 58 is provided at the upper end of the rod 1 i for connecting the jaws thereto, this grooved member being adjustable by'a handle 59. through a rack and pinion arrangement 26 so as selectively to connect either or both of the jaws to the rod as desired for quadding at either end of the line or for centering. A second handle 2:, pivoted at 22", and

operatively connected with a coupling pin '23 associated with the grooved member 18, serves to disconnect the rod H from both jaw operating levers for-a regular machine operation. The two handles, through theiractuating connection, thus constitute means for conditioning-the machine for a quadding or regular machine operation, as may be desired.

'The rod l I is slidable in upper and lower-bearings in the vise frame and is operated through a train of connections, indicated generally by the reference numeral 26, from an edge cam (not shown) fast to the main shaft of the machine;

.- This cam; which'makesione complete rotationat each cycle of-operationofthe machine, acts to movethe rodafirst downwardly to effect the inward or closing movement of. the jaws. andthen upwardlyto effect the outward -or..separating movement'ofthe'jaws.

Thejustification of the composed line is effected in the usual way by a two-stage upward thrust of the bar 21 against lower ends ofthe longer or pendant wedge sections of the spa'cebands to force them upwardly between the matrices and to ex'-. pand the line between the clamping jaws. The bar 2-'|'is'carried:'at the upper ends of two spaced vertical rods 28' and'29 slidable in upper and lower bearings in the vise frame. Between the bearings, the rods are formed with collars 30 and 3|, respectively, and the ends of the two justification levers (one lever 32 only being shown) 'engagethe col-' lars from below in raising the rods successively during justification. When spacebands are present in the composed line, they will limit the extent to which the justification bar can rise, but if=ithe line is composed withoutspacebands, the baris free to partake of a full stroke, the upper limit of which is determined by the banking of the upper :ends of the collars 30 and 3| against the upper bearings for the respective rods 28 and29. a

As thus far described, the parts and their mode of operation, except as hereinafter noted, are or may be the same as set forth in the aforementioned patents, see in particular the Hilpman Patent N 0. 2,255,254, which discloses what was at the time the most modern development of the quadding and centering device in use on commercial machines.

1 Coming now to the present improvements:

A new formof locking device is provided 'to hold the rod II in its downwardly moved position during a quadding-or centering operation. This locking device comprises a plurality of pawls or detents 40 (four shown by way of example) disposed horizontally one upon another in vertical stack formation and enclosed within a box or cage 4|. The detents are each formed at their rear ends'with a series of uniformly spaced rack teeth for engagement with similar but oppositely disposed rack teeth 42 formed directly in the rod The teeth 42 extend practically throughout the length of the rod II or, in any event, for a distance equal to the full extent of movement of the rod for quadding or centering. The spacing of the teeth on both the rod and detents is of the orderof .084", which enables the teethjto be made strong enough to'resist shearing under the heavy line squeezing pressure Gater to be described) which is applied through the rod. Such wide spacing of the teeth is permitted by arrangingthe teeth on the detentsin stepped or staggered relation as'between thedetents, such stepping or staggering being of the order of .021" and thus insuring engagement of at least one of the detents with the rod in any given position of the rod within that small dimension. This is clearly depicted in Figs. 7 and 8, whichshow the first and third detents (counting from the top) fully engaged with the rod in slightly different positions thereof. As will be evident from the drawing, the rack teeth Of'both the rodand detents are bevelled to facilitate their mutual en,- gagement, this bevelling acting (if need be) to depress the detents as a unit (as permitted by upon which the detents are supported, a front wall 4| formed with rows of holes or perforations to receive the protruding ends of springpressed plungers 4| which constantly press rearwardly on the detents, side walls 4| which guide the detents attheir opposite edges in their forward and rearward movements, and two rear flanges H which engage shoulders formed at the rear ends of the detents and which limit the rearward movement of the detents under the influence of the spring-pressed plungers. Normally, or when the locking mechanism is inactive, the cage 4| is held forwardly in the position shown in Fig. 6, with all the detents in alinement andwith their teeth clear of the teeth on the rod However, when the locking mechanism is operated, the cage 4| is pushed rearwardly to engage one or another of the detents with the rod I I, that particular detent being the one whose teeth will accurately mesh with the rack teeth on the rod and the others (whose teeth do not so mesh) being permitted to yield with reference to the cage (see Figs. 7 and 8).

The cage 4| is mounted for such backward and forward movements in a housing 43 which contains the upper bearing 25 for the rod At its forward end, the housing 43 is provided with a fixed nut 44 into which is threaded a short rotatable screw 45 formed at its rear end with a grooved stem portion which makes a swivel connection to a plate 46 attached to the cage 4| (see Figs. 6 to 9). As will be evident from the drawings, when the screw is rotated in one direction the cage 4| will be forcedrearwardly to engage the detents with the rod whereas when the screw is rotated in the opposite direction the cage will be drawn forwardly to disengage the detents from the rod.

Instead of being operated by the jaw moving mechanism, as in the prior patents mentioned, the new locking mechanism is operated by independent mechanism which, in the preferred embodiment illustrated, includes two sets of connections, one set actuated by the melting pot as it is swung into casting position and which effects the lockinga'ction before casting, and the other set actuated by the first elevator as it is moved upwardly from casting position and'which effects the unlocking action after casting. V

Referring first to the pot actuated connections: Pinned to the forward end of the screw 45 is a double-armed lever 50 having one arm connected by a'bent vertically disposed link 5| to the free end of a bent arm 52 extending forwardly from one end of a short transverse rock shaft 53 journalledin a fixed bracket 54 attached to the vise frame. Extending downwardly from the opposite the mounting later to be described) in insuring full engagement of the teeth in anyposition of therod;

-The box or cage 4.| presents a bottom wall .4 is

end of the rock shaft 53 is a right angular arm 55 formed at its free end with a laterally projecting plate 55 contacted by a roller 51 journalled in the lower end of an arm 58 pivotally suspended, as at 58, from the justification locking lever |-|l4 later to be described. When the machine is conditioned for a quadding or centering operation, as'depicted by the full lines in the drawings, the arm 58 will stand in front'of and be engaged by a spring-pressed plunger 59 mounted in a bracket,

50 clamped, as at 6|, to one of the pot supporting legs 8. Consequently, when the melting pot is swung forward to casting position, the plunger 59 will move the parts from the full line position shown in Fig. 3 to the dotted line position shown therein, lifting the link 5| and turning the lever 50 in a clockwise direction as viewed from the front: (see dotted lines in Fig. 4), thus imparting a similar rotation to the. screw 145: and causing the latter to engagethe locking detents withth vertically movable rod ll. 4

A- long off-center tension spring 52 is employed tovhold the partsin oneiposition ori-the other. This spring is anchored at its upper end tota pin 63 projecting laterally .from' the, supporting bracket 54 and is attached at its lower end to a' pin 64 projecting laterally from thefreeendof an arm 65 depending from the rock'shaft'53 be.- hindthe arm 52. As will be noted in Fig. 3,- when the parts are in their normal position, as shown by the full lines, the spring 62 will be disposed rearwardly of the axis of the rock shaft. 53,. but when the parts are in their operative position, as. shown by the dotted lines, the spring will-be dis. posed forwardly of the axis of-the rockshaft. The extent of movement of the pot actuated plunger 59, therefore, need only besufiicient to move, the spring 62 past dead center, the spring. thereafter having sufficient force to complete the movement of the parts. In this connection, it is pointed out that a stop pin 66 located on the fixed housing 43 (see Fig. i) limits the turning movement of the screw operating lever 50 in one'direction, while a stop lug 51*, carried by thelink i and arranged to bank upon the upper surface;

of the housing (see. Fig. 3), limits the turning movement ofsaid lever in the opposite direction.

Referring now to the connections actuated by the first elevator: Projecting forwardly from the screw turning lever 50, in overhanging relation thereto, is a cam plate formed on the upper end of the arm opposite that to which the lifte ing link 51 is attached. Tocooperate with the cam plate, the first elevator-is; provided with a small rocking lever H pivotedto the elevator at T2 and held normally in horizontal position by a spring 73 and set screw 14. At the rear, the lever is formed with an upstanding bevelled finger I5 which is arranged to engagethe under faceof the cam plate 10 when the screw turning lever-occupies the position indicated by the dotted lines in Fig. 4, which position is the one to which the lever will be turned by the pot actuated connectionsin engaging the locking detents-40-with the vertically movable rod H before casting. After casting, when the firstelevator moves upwardly to lift the composed line from between thejaws for distribution, the finger 15, by its engagement with the cam plate 79, will rock the screw turning lever fillback to its-original position and thus effect the. disengagement of the locking detents' from the vertically movable rod. Th sreverse rotation of the screw turning lever is timedito take place before the composed-line has -moved the pivotal mounting of the lever 1i, while perhaps unnecessary, is intended to permit it to rock.

out of the way of the cam plate 10 during the downward movement of the firstelevator in the event that the cam plate at such time stands in the path of the finger '15.

Like the single locking detent of theJ-Iilpmanpatent several times referred .t0, th e locking detents 400i the present invention are mounted in the housing 43 not only for a rearward and forwardmovement, as above describedbut'also for a limited vertical or upwardand downward movement with; reference: thereto, itbeingnoted;

that. the grooved stem. portion; of th screw is designed to permit such upward and downward movements without breaking its swivel connec- 8| contained withirrthe plunger, all as clearly shown inFigsLB to 8; As amatter of convenience inmaking adjustments-or repairs, the plunger 86-,is provided witha handle 82 extending down-. wardly through an opening in the bottom wall of the housing.

The'downward movement-of thelocking detents v; is; effected after they; have been engaged with the.,vertically movable ,rod. 1 l and CORSB-r quently is-impartedito, saidzrod in order-to. force the; clamping jaws. inward." from, their line'cona tacting, positions to. squeeze the line before the; casting operation. The mechanism employed for. the purpose is; substantially, the same as, that, more fully shown and described in said Hilpman patent, comprising a-foreeand-aftslide 90 having a pin and slot connection 91 with thehousing The rear 43 at oneside thereof (Figs. 3 and 4). end of the slide 90 is hook-shaped to cooperate with -.a hooked plate 92, carried by a spring-actuated link 93- controlledv by a cam (not shown). onthe maincam shaft of the machine. At its forward end, the slide v9i] isbent to provide a lip 94 arranged to engage-in front of a cam arm 95 pivotally-suspended from the free end of a lever. 95 pivoted at v91 to the housing 43 at the.

side opposite that on which the slide Silis located.

The lever 96 overlies the housing 43 and is formed with a lug which; passes through the top of-the housing ancl bears upon the uppermost detent 40. The camarm-Siengages a roller 98 mounted on a fixed pin between the housing and a strap 99-which holdsthe arm, against sidewise movement. According to this arrangement, when the slide90 :is moved rearwardly by the link 93 (which isactuatedby a powerful spring), thelip. 94 engagesandrocksthe cam; arm 95 which, by its engagement with the roller '98, draws the lever 96 downwardly'to apply the full downward pressure of the actuating connections to thelocking detents and through them to the rod l I. After the casting;operation-, and when. they operating link-.93 -.i's-restored to its original position under cam-control, a. spring lflll-exercises itself to draw the slide 9D-forward and allowthe. camarm 95 toroclo back to its original position as the lever- 96 is raised by thelocking detents 40. in response to the upward pressure ofthe spring plunger 80. It is this. upward movement of the lockingdetents which releases the pressure on the ,composed line while; they are still engaged with the rod H .and before the first elevator lifts the line from between the clamping jaws. For amore detailed description of this line squeeze action, reference may be had to the Hilpman patent.

According to the present improvements, when the composed line is quadded or centered, the

justification mechanism is-disabled by locking the justification bar 21- againstzupward thrust,

Referring to Fig l, two locks")! and I02 areprovided to .prevent'bothfirst and second justificationsfrom taking place, a lockbeing provided for each of the justification rods because of the inmi ideatee' abate eib'io'tk "lll3'carried by the juse; fica'tion 06129. As shown, theilocklfll is formed at the -end or "the" lbi er arm era bell e ik lever [04 pivoted to'theviseframe as-at l 05,wh1le thelocklflZ is termed-ante fre'e'end-of a long lever lll'fifpivotedjtothe vise' frame at 101. i The twofllevers are-connect'ed'bya link I 08 to move in I thei'spirit ofithe inventioniasset forth in the appended claims."

unison into and out 'f their active positions The shorter arm fl'fl of the bel-lierank leverm4; is honneetedbyfan upright link "I 10 to a smaller. bell' crank lever-H l ,which turnis connected by' a'link I I2 'tothe'ihahdle-ZI before referred to;

"The I arrangement of the parts i's such that" when the handle 2 l-is'opera ted to couple tlie'ver lr mev ble red '1 t the i'i Operating levers l2 and l3 fora'qi1adding or centering operation, the levers I04 and I06 will be rocked to locate-the locks IM and I02 in their active position, as shown'b the full linesin the drawings, whereas when the handle is operated to uncouplethe rod H from the vise -jaw operating levers fora -regular 'maehme operation, the levers will be rocked to locate the locksin their inactive; position, as indicated part by the dotted lines in Figs. 4 and 5. It may be pointed out that aslight upward mb'veme t of the justifica'e tion; bar- 2 1 istperinittedjbefore the locks Hill; and H12 become effective, this being desirable if any spacebands happen to be present: in the line because the bar will raise the long wedge sections thereof a slight amount sufficient toinsure that their upper ends extend above the routing notches 1 of the matrices and cut off any possible leakage of molten metal at this point during casting.

As a further feature of the invention, it is proposed to disable the lockfing mechanism for the vertically movable rod II during a regular machine operation, the idea being to avoid undue wear on the rack teeth formed on the rod and on the locking detents. This is accomplished, in the preferred embodiment illustrated, by the pivotal mounting previously referred to of the roller arm 58 (forming part of the pot actuated connections for the locking detents) upon the longer arm of the bell crank lever I04 carrying the lock H]! for the justification rod 28. Due to such mounting of the arm 58, it will be carried into and out of engaging relation to the spring plunger 59 carriedby the pot leg,according to the conditioning of the machine. In other words,

when the machine is conditioned for quadding' or centering, as indicated by the full lines in the drawings, the roller arm 58 will be located directly in frontof the plunger 59 and will tran'smit the rocking motion of the melting pot to the locking detents 40 to engage them with the verof the locking device.

3. A slug casting machine according to claim tically'movablerod II. On the other hand, when the machine is conditioned for a regular machine operation, the roller arm 58 will beshifted to the left out of engagin relation to the plunger 59 (see the dotted lines in Figs. 4 and 5) and thus fail to transmit the rocking motion of the melting pot to the locking detents, which consequently remain at rest and out of engagement with the rod. In this connection, it may be noted that, during the shiftin movements of the arm 58, the roller 51 carried thereby will slide along the plate 56, which is made long enough for the purpose and which thus maintainsthe arm in proper position at all times ingly spaced rack teeth for locking the rod after movement to hold the jaw in its line contacting position, said detents having their teeth disposed The foregoing improvementshave been shown merely by way of example and in preferred form. Many variations and modifications will be obvious to those skilled in the art and come'within I-Iaving F thus "described.- my"? 'vention, what I claim is}; i' I Aslu-g casting machine equipped with aligning'rnechanism for the composed line and with a melting pot movable to and fromoasting positionvland including-in combination, a pair of line clampingfj'aws movable one toward the other in quadding, mechanism for effecting such qu'ad--= ding movement of the jaw, 'a lockingdevice to hold the j'avv'iri'itsline contacting position;- and meansindependent of the jaw moving mechalnislm'and actuated by the movement of the melting pot-to asurig; osition? for effecting the engageaction as takenplaee} Ina slu casting ment-1 f the-locking device fafter the aligningmachinefequipped with aligning mechanism for the" composed line and with a meltingpot-rnovable to and'from casting position as well as with a transporter to carry the composedline toand from casting position and including, in combination,- a pair of line clamping jaws movable one toward the other in quadding, mechanism for effecting such quadding movement of the jaw, alocking device to hold? the jaw igits' "linefg'contactingiposition,

means-independent of the jaw moving "mechanism and actuated by the movement of the melting pot to-ca'stin-g position for effecting the engagement of the locking device after the aligning action has taken place, and means actuated by the movement of the line transporter from casting position for effecting the disengagement 1, including means for disabling the pot actuated means to render the locking device inactive during a regular machine operation.

4. A slug casting machine equipped with aligning mechanism for the composed line and with a melting pot movable to and from casting posifor looking the justifyin mechanism to render' it'inoperative to expand-the line .Whenthe latter is quadded, and common manually adjustable means for rendering the pot actuated means inactive and the justifying mechanism active during a regular machine operation.

5. In a slug'casting machine equipped with a pair 'of line clamping jaws'movable one toward the other in quadding, the combination of a vertically movable rod for effecting such quad-i ding movement of the jaw, said rod being provided with a series of uniformly spaced rack teeth, a plurality of detents having correspondin stepped relation to insure the engagement of one or another of the detents with the rodin minutely varying positions of the rod, a cage in which the locking detents are mounted and in which they are arranged horizontallyone upon another-in vertical stack formation but with engagement of'thedetents with and fromthelo vertically movable rod-and,slidable vertically in; opposite directions to. apply oppositevertical thrusts to the jdetents while engaged with the. rod; means: forefiecting such horizontal, move;

ments of the cage, and additional means-for efl5 fecting such: vertical .movements of the cage;

6. The combination according, to. claim 5, whereinthe means for effecting, the horizontal sliding, movements of the cage .include a rotatable screw, saidscrew being threaded inthe fixed 20 housing and having a hub portion which is con-. nected by a swivel to the cage.

7. In a slug casting machine. equipped .witha. melting pot movable to and from casting position and with a pair of line clamping jaws mow--25 able one toward the other in quadding, the combination according to claim 6, wherein the means for effecting the horizontal sliding movements ofithe'zcageincludeconnctions operated: by the movement of the melting potxto casting positl0l1 -f0f rotating the screw in one direction:

8.- *In a' slug casting machine equipped with a 1 melting pot movable .-to and from casting position, a, transporter: for. carrying the composed line to and from castingposition, andapair; of, line clamping, jaws-imovable one towardthe'; other in :quadding, the combination according to-= ,claim': '7, wherein the :means foreffecting the horizontal sliding; movements of-v the cagein-. clude connections operated, bythemovement of the-line transporter .from casting-position forrotating the screw in the opposite r-direction.

. JOSEPH F. KRUSBERGER:

References Cited: in. the -;file. or this i patent UNITED STATES PATENTS;

Number Name Date' 7 1,941,378 Andrew Dec. 26,1933 2,053,232 Willis Sept. 1, 1936 2,092,220 Mead Sept. 7, 1937 2,100,507 Haywardnet'al. Nov. 30,1937 2,116,035 Mead May 3, 1938 2,166,170 Mead July 18, 1939, 2,255,254

Hilpman Sept. 9, 1941.

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