US2255254A - Slug casting machine - Google Patents

Description

J. H. HILPMAN' SLUG, CASTING MACHINE Sept. 9,1941.

Filed Aug. 3, 1940 7 Sheets-Sheet l [.{VVENTOR BY W I x I A 7 TORNEYS.

Sept. 9, 1941. J. H. HILPMAN SLUG CASTING MACHINE Sheets-Sheet 3 Filed Aug. 3, 1940 147717 ALETQi Sept. 9, 1941. J. H; HILPMAN' 2,255,254

SQLUG CASQTING MACHINE I Filed Aug 5, 1940 '7 Sheets-Sheet 4 INIVENTOR A T E161 Sept. 9, 1941'. J. H. HILPMAN SLUG CASTING MACHINE Filed Aug. 3, 1940 7 sheets-sheet a INVENTOR M{ ATTOR 5Y5.

Sept. 9, 1941. J. H. HILPMAN SLUG CASTING MACHINE Filed Aug. 3, 1940 '7 Sheets-Sheet 7 v R Y WW E. m V .mww W,

ter kind in machines of this Patented Sept. 9, 1941 H E in:

assignor to corporation of New Mergenthaler York Application August 3, 1940, Serial No.

Linotype Company, a

'43Claims. ;(01. 1994s) This invention relates to slug casting machines, such as Linotype machines of 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 transferredto a slotted mold for the casting of a type bar or slug,

and the matrices and spacebands thereafter separated and returned .to the magazines from which they started. More particularly, the invention relates to machines of this character equipped withouadding and centering devices, in order that handle not only lines of full length as ordinarlly, but in addition lines of less than full length (regardless of their actual length) lines of the latcharacter being composed merely with the matrices necessary 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 rolander Patent No. 1,971,400, datedAugust 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 themold 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 oppo site 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 righthand jaw or the left-hand jaw from the verti: callymovable member, so that one or the other may be operated independently for quadding at the right or at the leitas may be desired. When both jaws are disconnected, as they may be, the machine is free to function-in right-hand jaw being left normally stationary and the left-hand jaw being adjustable by the customary devices. 'When'the clamping jaws are moved into contact with the composed line, the

vertically movable member is locked in its downwardly moved position by means of a toggle clamp actuated by a lost motion device included in the operating connections and, after a casting operation, the toggleclamp is released, allowing the vertically movable member to ascend and restore fii only, the'line by a distributing mechanism" 1 the machine may.

the usual way, the

before. the line .the grip element .tuated upwardly the clamping jaws to their positions of maximum separation.

An improvement upon the aforementioned toggle clamp is disclosed in the Mead PatentNo. dated September '7, 1937, wherein the grip element is alloweda limited'deg'ree of movement while still in engagement with the vertically movable member to allow the latter to be ac- -for a small distance to permit the slight backing off of the line clamping jaws has been lifted clear of the jaws, later (after the line has cleared the jaws) beingdisengaged from the vertically movable member to permit it to ascend to its uppermost position and returnthe jaws to their positions of maximum separation.

and Mead patents referred to, vcontemplate the closing of the jaws against the composed line under pressure and thereafter eifecting a positive separadistance for the free expansion of the spacebands in justifying the line, the justification pressure being sufficient (as to compress to prevent metal squirts or J35 ,tice, however, to

It is notv the pracquadded lines, whether or not they contain spacebands except in certain instances such as; for so-called straight-line indention, when the jaws are backed off from line contacting position to abut against fixedwstops. In the absence ofjustification, the line closing pressure of the jaws is .not always great enough the. matricesin the .line sufiiciently the production of hair lines on the cast slug. For example, the line clamping jaws are supported looselyenough so that'under normalline 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 line tightly between the jaws.

at one, or both .ends of the line between the end,

matrices and the matrix engaging faces of the jaws throughwhich. metal can squirt when injectedinto the mold for casting, The other difficulty, the production of hair lines on the .slugs, maybe due to several causes, chief. among which is that arising from 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 engage rnent. If this were true of one or twomatrices closing pressure might squeeze the for connecting the jaw spreading power means to the lever for actuating the vertically movable member;

Figs. 9 and 10 are comparative views of a portion of the justifying mechanism and the means for disabling it;

Fig. 11 is a sectional View of the locking device for the vertically movable member, taken on the line H-l I of Fig. 14 and looking in the quadding as usual and then apply a supplemen- 10 direction of the arrows; l pr s r hr h h j w m vme means to g. 12 is a view, partly in elevation and partly urge the aw inwardly from its line contacting in section and taken substantially on the line position to squeeze the line tight enough to insure I 2l2 of Fig. 14, of the ver tically movable memthe straightening and complete sidewise conher and its locking device; tact of all matrices composed therein Such g. 13 is a sectional view of the locking device line squeezing pressure also serves to straighten similar to that shown in Fig. 12 but showing the t e Jaws so that their matrix engaging faces parts in diiferent relative positions; make complete contact with the side faces of the Fig. 14 is a top plan view of the locking device' end matrices. Fig 15 is a front elevation of the means for In carrying out the invention, the power means conditioning the interponent for backing ofi the jaws from their line contactg. 16 is a perspective view of some of the ns p s n 1s u d to p du h qmslt parts of the conditioning means, showing them supplemental pressure, there being employed an in separated relationship; and ad ustable interponent which under one settm Fig. 17 is a side elevation of a modified form connects the power means to the vertically mOv- 5 of jaw closing cam. able member to back off the aws for ustified The matrices X and the expansible spacelines and which, under another setting, connects bands Y are composed in line 111 the assembler e power means to the toggle clamp for urging 1n the usual way, and trans erred to a vertically e Jaws inwardly from line contacting posltlon movable transportei or first elevator, which 0 Squeeze l' fi lines he nterponent s thereupon descends to position the line b tween adius d m n l y to ap he power means the left hand aw E! and the light hand aw F selectively to perform either of its functions. A (Figs. 2, 9 and 10) and in front of a slotted mold kin d vice 1s provided WhlCh normally is (not shown). The mold then advances from the operatlve o l k he hne iustlfying mechanism rear and into contact with the line and with against operation, and this locking device also the two clamping aws for the slug casting opls controlled y h mterponent and rendered eration, the line, prior to casting, being aligned 1 Derat1ve when the aws are to be backed off and justified 1n the same manner as when the for a line splead. For regular machine operamachine is being operated under the usual conti n. p visi s mad f nd r n th lockin ditions After the slug has be n cast, the mold d f e in p ra ive during each cycle of the mais carried from its horizontal casting position Fig. 2 is a front elevation machine, showing certain of in Fig. 1; v

Fig. 3 is a view of some of the parts shown in;-- Fig. 1, illustrating the operating connections for the vertically movable member and its locking device;

Fig. 4 is a shown in Fig.

of a portion of the the parts included movable member;

Fig. 8 is a sectional view of the interponent 75.

each other to reoriginal positions of maximum the composed line positioned turn them to their s parat onince between the jaws may vary in length, the actual extent of movement of the rod H will, of course, vary accordingly, and hence provision is made for such varied movement of the rod in its actuating connections, as will presently appear.

A suitable device, in the nature of a segmental grooved member H is provided at theupper end of the vertically movable rod H for connecting the jaws thereto, this grooved member being adjustable so as selectively to connect either or both jaws to the rod, as desired, for quadding at either end of the line or for centering. The manner in which the member is adjusted has no concern with the present invention and nothing further will be said about it here.

The rod H is slidable in suitable bearings B and B in the fixed frame. At its lower end, the rod H is connected by a link H to theforward end of a lever H having a hub portion H journalled on a pivot rod H carried by a bracket 13 secured to the vise frame (Figs. 1, 3, 6 and '7). Fixed to and depending from the hub portion H is a barrel or cylinder H containing an expansion spring H" pressing upwardly against a lug H projecting forwardly from the hub portion of a second lever H also journalled on the pivot rod H The lifting tendency of the spring H is resisted and overcome by the engagement of a stop lug 1-1 on the hub portion of the second lever H with a stop lug H formed on the hub portion of the firstlever E the effect of this arrangement being to cause the two levers to move in unison until the first lever is arrested by the rod H as the jaw or jaws, whichever is connected thereto, banks against the composed line.

The second lever H is connected at its rear end by the roller and groove connection H to the forward end of a bent lever H journalled on a pivoted rod H fixed in the main frame, a tension spring H being connected to the lever in advance of its pivot and serving constantly to move it downwardly at its forward end. The lever at its rear end is provided with a roller H 'tracking upon the periphery of an edge cam M fast to the main shaft M of the machine.

From the foregoing construction, it will be seen of the cam M (which is always which makes one complete rotation at each cycle of operation of the machine) is imparted the train of connections just described, to move the rod first effect the inward or closing movement ofthe jaws E and F, and then upwardly to eifect the outward or separating movement of the jaws. Since, as already stated, the downward movement of the rod H will vary according to the length of the composed line positioned between the jaws, its actuating connections must be arranged to yield as the rotation of the cam continues, and this yielding isprovided for by the lost motion which takes place between the two levers H and 1-1 the latter acting on the former through the expansion spring H" which, of course, will be compressed to absorb the lost motion. The lever H being thus permitted to partake of a full rocking movement,- may be (as it is) positively connected to the cam operated lever H.

In order to lock the rod H in its downwardly moved position, there is provided a toggle member J (see Fig. 11) enclosed within a box or housing B 'which carries the bearing B before alluded to. This toggle member operates a clamp or grip element 5 arranged to contact with a sleeve'H carried by the rod H and which, for purposes oi. the present description, may be assumed to be integral'with the rod- 1-1. Associated with the toggle is an actuating link J provided at its upper end with an adjusting'screw J arranged to bear upon the toggle joint. At its lower link J is connected by a turn buckle link J (Figs. 1, 2, 3'and6) to the forward upwardly bent of the lever H before referred to. As will be noted, the link is slotted as at J ,'so as to straddle the toggle joint, being encircled within the box 7 spring J 6 which normally presses upwardly through a pin or stud J' on the toggle joint to maintain the grip element J? in inactive position. 7

It will now be seen that the toggle member J is operated by reason of the lost motion which takes place between the two levers H and H it being remembered that the former lever is the one connected to the rod H. In other words, after the lever H is arrested in its movement by the cessation in downward movement of the rod H (due, of course, to the contact of the jaws E and F with the opposite ends of a composed line) the lever H continues to move to its full extent under the influence of the rotary cam M which acts in the meantime to continueits drawing down ofthe link J The length of the link (or what amounts to the same thing, the position of the screw J thereon) is such that, during the last portion of the movement of the lever H the screw is moved within the box and caused to actuate the toggle member J so as thereby to press the grip element J under heavy pressure against the sleeve H and lock the rod H securely in its downwardly moved position.

Actually, the rod H and its sleeve H are not connected together as one, provision being made for a slight relative movement between the rod and the sleeve after the latter has been locked by the toggle member in the downwardly moved or line clamping position of the rod, in order to allow for a limited line spread during justification. Referring particularly to Fig. 12, it will be noted that at its loWer end, the rod H is provided with a fixed collar in threaded on the rod and which contains an expansion spring h encircling the rod H and pressing upwardly on the lower end of the sleeve 1-1 This lifting tendency of the spring, however, in the downwardly moved position of the rod, will be resisted and overcome V rotatably mounted on the sleeve H at its upper end and arranged in position to engage a collar V fixed to the rod H. When the cam V is set with its high point in contact with the collar V it will, by reacting against the collar and over the opposition of the spring h hold the sleeve 1-1 in contact with the second collar h at the lower end of the rod. Under such a setting of' the cam, as will now be evident, there can be no relative movement between the rod and the sleeve, and the two parts function as if they were rigidly united, which is the condition that should exist when casting from lines without spacebands. On the other hand, when the cam V is set, say to bring its lowest point into contact with the collar V then the sleeve H in the downwardly moved position of the rod H will be raised by the spring n out of engagement with the collar h, and the clearance thus provided will determine the amount of the relative movement which can take place between the rod and sleeve after the locking of the latter by the toggle member J in the manner before described, This is a condition which should exist permit the mairimum spread its lowest and highest points.

The cam V may be set either manually by adjustment of the arm V to different set posipresently appear, when tion, the link H is moved rearwardly after the sleeve H has been tained spacebands.

Going b ck to the actuating connections, the link H is connected by a long tension spring M which controls the jaw closing and jaw opening movements of the rod H.

As will be noted (Figs. 1 and 17), the relation of the two cams M and M is such that, shortly after the former has be caused and rock the conand H clockwise to draw the the machine is in opera- 0 jourby the lever H serving to locate the parts in their proper positions. In order to move the link H forwardly to its original or normal position the link is provided with a long rod H extending through the spring H and connected at its rear end by a pin and slot connection H to the lever H he play of the pin and slot connection H is such that the actuating move ment of the lever H will always be transmitted necessary perhaps, the is slidably supported at its forward end in a bearing formed in a bracket M attached to the fixed machine frame.

allow the line clamping jaw to the removal of the line. Accordingly, the grip element J is formed with teeth 7' adapted to engage with teeth h vid be backed off for adapted by its rocking movement to force the block J inwardly or allow block J and the with grip element J from engagement h on the sleeve H to allow the drawal of the with the teeth latter to rise and return the line clamping vjaws to their positions of maximum separation.

The justification of the composed line is effected in the usual way bya two-stage upward thrust of the bar K (Figs. .9 and 10) againstthe lower ends of the long or pendant wedge sections 1 of the spacebands Y to .force the sections upwardly between the matrices and expand the line tightly between the jaws E and F. Thebar K is carried at the upper ends of two spaced vertical rods K and K sliding in upper and lower bearings B and B respectively, of the fixedframe B. Below the upper bearings E the rods K and K are formed with collars k and k respectively, and the ends of two justification levers (one lever K only being shown) engage beneath the collars k and k in raising .the rods and K successively during justification. When spacebands Y are present in the composed line, they limit tion bar K can rise, but if without spacebands, the bar of a full stroke, the upper limit of which is determinedby the banking of the upper ends k .of the collars 7c and Te against the bearings B A5 thus far described, the parts and their .operation, except as hereinafter noted, are or may be the same as set forth in the Mergenthaler Patent No. 436,532, the Frolander Patent No. 1,971,400, and the Mead Patent No. 2,092,220, all before referred to.

Coming now to the present improvements: The link H is not permanently secured to the jaw moving mechanism but is adapted to be .se-

the line is composed K is free to partake lectively connected thereto during the machine 1 To this end, an interponent P (Figs. '7, 8 and 15) is provided at the forward end of the link H and the latter is pivotally mounted for vertical rocking movement on a pin 71. projecting from the sliding rod H terponent P presents a lower portion P provided with a tooth p projecting from its bottomedge and adapted to engage with one or another of three teeth h formed at the free end of the upstanding arm H of the lever E H occupies its lower position. As best shown in Fig. 8, the interponent section P is carried by an adjusting screw P threaded intoa boss 12. the adjusting screw passing through a compression spring? between the inner end of the section 1? and the boss.

The adjusting screw P is formed with a knurled head 11 by which fit may be turned manually, and is provided with a circular flange p notched at .spaced intervals in its periphery to receive holds the screw in different set positions. The purpose of the adjustable mounting of the sec tion P will be set forth hereinafter.

Normally, the link H and interponent P cupy a raised position as shown in Fig. 3 with the tooth p disengaged from the teeth h on thearm H being held up in that position by a lever Q (see particularly Figs. 1, 3, 4 and 5) mounted to rock on a pivot Q}. When the jaw closing lever H is moved to the position. shown in'Fig. 1, its idle position, a spring Q (Fig. 5) rocks the lever Q counter-clockwise (looking from the front of the machine) and a roller q carried by the lever engages the link H and rocks it upwardly about its pivot clear of the teeth h Considering .only the structure thus far scribed, when the lever H is rocked downwardly bythe lever H to pull down on the-rod Hand effect the quaddingmovementofthe jaw (or the extent to whichithe justificae The 'inwhen the link a leaf spring which H h to carry the .tooth p both "jaws when centering), the arm H rocks idly in a clockwise direction (as viewedin Fig. 3). Thereafter, as the lever H completes its stroke and effects the locking of the rod H in its downwardposition, its forward end engages the lever Q, overcoming the action of the spring Q and rocking the lever Q clockwise (Fig. 5) to allow the link H to tooth .p of the interponent other of the teeth h on the arm H depending upon the extent to which the arm H hasbeen rocked. Subsequently, when the drawn rearwardly P with one or anrod H and move position to permit expansionof the line by the spacebands during justification, all in accordance with'the disclosure of the Frolander patent referred to.

Whenever aline of matrices is to bequadded (or centered) and expansion of the line by the not desired, the jaw spreading power mechanism ust described is utilized to urge the jaw inward from line contaotingposition to squeeze the 'line, For this purpose, an upper portion 7 of adetachable block P (Figs. 1, 3, 4, 6, '7, 8 and 15) provided with a shoulder 10 is adapted'toen gage the hooked end of an arm S when the link H is in its raisedposition. 'fter the quadding movement of the jaw has taken place, if the link H remains in its raised position (being prevented from dropping by means to be described hereinafter), when it is moved rearwardly by the spring H it carries the block P with it and imparts a longitudinal movement to the arm S, which arm is free-to partake of such movement by virtue of a pin and slot connection S by which it is supported at one side of the housing B The following end of the arm S is bent to provide a lip S arranged to engage in back of a hooked arm S pivotally suspended from thefree end of the aforementioned arrn'J (see Figs. 12, 13 and 14) The hooked arm S engages a'roller S mounted on a fixed pinS between the housing B -and a member S which holds the arm S against sidewise-displacement; Hence, when the arm S is moved rearwardly in themanner stated, the lip S engages and rocks the hooked arrn S However, the roller S riding on the surface S of the hooked arm 8 cams the later downwardly and rocks the lever J from theposition shown in Fig. 13 to that shown in Fig. '12. This move? ment of the lever J forces the grip element J downwardly and, since the latter is already inengagementwith the sleeve H", the sleeve also moves downwardly, carrying the rod 'H with it and causingthe jaw to squeeze the composed line of matrices under the pressure of the spring H, which pressure is and arrangement of the parts described. When the shaft H is returned to its forward position, a spring S exercises itself to drawthe arm S forward and allow the'hookedarm S to rock back to its original position as the lever J is raised by the grip element J in responsetto the expansion of the spring-7 When the composed line is squeezed instead.

of expanded, the justifying mechanism is disabled by locking the justification upward movement. Referring to Figs. 2, 9 and l0,two locks Z and Z are-provided to prevent both first and second 'jnstificationfrom taking place, alock being providedifor each of'the rods K .andK because. of the independent actuation drop and thus engege the of the interponent P in the form greatly multiplied by the form,

bar K against S, is placed under tension and the link Z is lowered to allow the weight Z to hold the locks Z and Z in their active positions. Hence, whenever the link H lower interponent portion P the lever arm H to efiect the jaw spreading P allows the spring Z to contract and rock the lever Z counter-clockwise (Fig. 3) to raise the link Z and through the levers Z and Z withdraw the locks Z and Z to their inactive positions, so that justification can take place.

may be pointed out now that while there is a arm'e of the bell-crank Z and rocks it in a counter-clockwise direction (Fig. 10). This rocking of the bell-crank Z acts through the pin 2 to rock the bell-cranks Z in a clockwise direction and carry the locks Z and Z to their inactive positions. After the casting operation, when the rod H is raised again, the weight Z Turning, now to the mechanism for ing the quadding device either to spread the jaw V engage with when the link H is released by the leposition. More speis in the position and the link H drawn rearwardly, the arm S is engaged by the and carried with it to rock the hooked arm S and grip element J thereby moving the the jaw inward from squeeze the line unand at der the multiplied pressure of the spring H Because the link H and and block P remain in their raised positions, the lever Z is undisturbed (the block P merely moving fore-and-aft relatively thereto) and the justification bar locks Z and Z remain in their active positions to prevent justification. I

When the control lever T is adjusted to the intermediate notch t indicated as the setting for Min. spread (minimum spread), the block T occupies its intermediate lateral position with the right hand portion 1: only thereof in position to underlie the tooth p of the interponent P. With this setting of the block T, if the arm H is rocked clockwise (in Fig. 3) during the jaw closing movement sufficiently to carry the recess i forwardly beyond the tooth p, the top surface of the block T becomes eflective to maintain the link 1-1 in its raised position after its release by the lever Q and bring about a line squeezing operation through the spring H On the other hand, if the rocking of the arm H is not sufiithe top surface of the block effecallows the tooth p to clear the block T and permit the link H to drop, thereby (l) engaging the tooth p with a tooth h on the arm H (2) allowing the spring Z to rock the lever Z counterclockwise (in Fig. 3) to raise the link Z and move the locks Z and Z to their inactive positions so that justification can take place, and (3), when the spring H comes into operation, drawing the linkH rearwardly and this time rocking thelever arm H counterclockwise to raise the rod H and back OK the jaw or jaws from its or their line contacting position or positions to permit the line to be expanded by the spacebands. This action of the parts takes place only in the case of lines that are composed to within a predetermined extent short of full line length such that the spacebands can expand full justified length. If it is inlength line, but for one reason or another the line has not been composed to within the predetermined range mentioned, then the jaw moves inwardly sufficiently before it contacts the line to bring the top surface of the block T into position below the tooth p of the interponent P and thus acts to maintain the link H in its raised position with the result that the subsequent operation of the link through the spring H effects a line squeeze rather than the backing on of the jaw to its full line position. has been made to the fact that the portion P of the interponent tooth p is mounted on an adjusting screw. This is for the purpose of locating reference to the forward end of the top surface of the block T to vary the extent to which the block must be moved forward before the surface becomes efiective. In other words, if a full length line is thirty ems, the adjustment could be such that unless the jaw moved inward more than, say, three ems, the block T would not be moved forward far enough to render the top surface effective and the recess 2& would allow the link H to drop and engage the tooth p with one of the teeth hfi for rocking the arm H to back off the jaw to full line position. However, if the full length of the line were, say, fifteen ems, the adjustment could be such that a jaw closing movement of more-than one and one-half ems would render the top surface of .the block eifective to prevent the backing off of the jaw. Such a setting would be required, too, if the machine were conditioned to cast a full thirty em line or else tocenter theline, for in the latter case a movement of more'than one and one-half ems for each jaw would constitute a total movement or more than three ems for both jaws. From the foregoing, it will be clear that difierent adjustments of the interponent section P can be made to vary the relationship of the tooth p to the forward end of the block T to meet all requirements.

The third position of the control lever T i. e., in the notch t indicated as the position of Max-.4 spread (maximum spread), locates the block .-T in its extreme left-hand position clear of the side edge of the tooth p. This is the setting employed when a line spread is desired for a quaddedline and is intended for use primarily in connection with the so-called straight-line indention wherein the jaw is moved for quadding and, regardless of the actual length of thecomposed line, is backed off to abut against a fixed stop and the line then expanded by the spacebands to fill out the space between the jaws. Straight-line indention is a recent development familiar to those versed in the art and suifice it to say that it is employed for casting successive quadded lines sired the Mead Patent No. 2,166,170, dated July 18,1939.

It will now be clear that, regardless of whether or not spacebands are contained in the composed line, the jaw spreading and justifying means are both disabled and the supplemental line squeezing-pressure is applied except for straight-line indentation or when casting from a line composed within a predetermined extent but of full line measure.

Whenever the machine is conditioned for quadding or centering and the control lever T is set in the No spread position, the jaw spreading control arm V must be located in its upper position as shown in Fig. 12, its zero setting, so that the high point of the cam V engages the collar V and prevents relative movement between the-rod H and sleeve H otherwise the line squeezing pressure will be ineffective, since it will berecalled that that pressure is applied through the sleeve H and, of course, the sleeve and the rod H must be conditioned to move in unison. For straight-line indention, when the controllever T is set for Max. spread, the control arm V to engage the iow'point of the cam V with the collar V andseparate the lower end of the sleeve Hi and the collar is to provide for maximum relative movement between the sleeve and the rod H for backing oil": the jaw prior to justification. A like setting of the control arm V is made when the control lever T is set in its intermediate position for Min. spread. It is pointed out, however, that while a single cam V has been shown in the drawings, a difierent and quick acting cam is employed for minimum spread, because the relative movement (maximum) between the rod provided for by the cam V must be reduced completely in response to a three em inward movement-only of the'jaw from its full line position. Actually, the commercial equipment embodying the present improvements includes but a single cam V, adapting the machine either for No spread and Maximum spread or else for No spread all three, and for this reason the single cam has been sh0wn.- However, contemplates the-provision of quick detachable interchangeable cams, or-a shiftable multiplecam;

of uniform length, but see if deis set in its lowermost position.

H and the sleeve H and flviinimum spread, but not for the present invention' engage the grip H As the roller line squeezing movement of the jaw, as the case may be. Thereafter, the roller the high portion m appended claims.

Having thus described my invention, what I claim is:

slug casting machine including, in combia pair l. A nation, of line clamping aws movable wardly to squeeze the line.

A s! bination,

5. A combination according to claim 4, wherein "the selective operations of said means is conincluding a vertically movable rod for one toward the cluding a vertically movable rod for effecting such quadding movement of the jaw, means for locking the rod to hold the jaw in its line contacting position, and means for applying a line squeezing pressure on the jaw through said rod locking means.

7. A slug casting machine including, in combination, a pair of line clamping jaws movable one toward the other in quadding, mechanism such quadding movement of the jaw, a locking device engageable with said rod to hold the jaw in its line contacting position, said locking device being movable when in engagement with the rod,

and pressure applying means acting on said looking device and the rod to urge the jaw inwardly from its line contacting position for squeezing the line.

8. A slug casting machine including, in combination, a pair of line clamping jaws movable other in quadding, mechanism including a vertically movable rod for effecting such quadding movement of the jaw, a locking device engageable with said rod to hold the jaw in its line contacting position, said locking device when in engagement with the rod, and pressure said locking device and the rod before casting to urge the jaw inwardly from its line contacting position for squeezing the line and after casting to relax the pressure on the jaw before the lock is released.

9. A combination according to claim 6, wherein the pressure applying means comprises a train of connections actuated by a cam on the main shaft of the machine.

10. A combination according to claim 6, wherein the pressure applying means comprises a train of connections actuated by a cam on the main shaft of the mac he, and including a movable-interponent for disabling said train of connections at will.

11. A combination according to claim 6, wherein the pressure applying means comprises a train of connections actuated by a cam on the main shaft of the machine, and including a movable interponent controlled automatically by the extent of quadding movement of said rod for disabling said train of connections.

- 12. A slug casting machine including, in combination, a pair of line clamping jaws movable one toward the other in quadding, a train of connections between said jaw and the main cam shaft of the machine for effecting the quadding movement of the jaw, and a second train of connections between the jaw and said cam shaft for applying a line squeezing pressure on the jaw when in quadding position.

13. A combination according to claim 12, wherein some of the elements of said trains of connections are common to both trains.

14. A combination according Y to claim 12, wherein said trains of connections include a vertically movable rod connected to the jaw and common to both of said trains, and including means to prevent actuation of the rod through the last mentioned train of connections when a line squeeze is to be avoided. v

15. A combination according to claim 12, wherein said trains of connections include a ver- 7 common. to. both automatic means controlled by the extent of tically movable rod connected to the jaw and of said trains, and including movement of the rod to prevent the actuation of said rod through the last mentioned train of connections when a line squeeze is to be avoided.

Q 16. A combination according to claim 12, wherein said trains of connections include a vertically movable rod connected to the jaw and common to both of said trains, and including a movable interponent adapted in one position to establish one connection between, the second mentioned train of connections and the rod to .move the rod in one direction for spreading the jaws, and in another position to establish a different connection between said train of connections and the rod to move the rod in the opposite direction to urge the jaws inwardly for squeezing the line.

17. A combination according to claim 12, wherein said trains of connections include a vertically movable rod connected to the jaws and common to both of said trains, and including a movable interponent adapted in one position to establish one connection between the second mentioned train of connections and the rod to move the rod in one direction for spreading the jaws, and in another position to establish a different connection between said train of connections and therod to move the rod in the opposite direction to urge the jaws inwardly for squeezing the line, and an element adjustable to differentset positions relatively to said interponent and adapted thereby to control the position of the interponent.

18. A slug casting machine including, in combination, a pair of line clamping jaws movable one toward the other in quadding, mechanism including a vertically movable rod and .a sleeve mounted on and movable with the rod in effecting the quadding movement of the jaw, means for locking the sleeve and rod when the jaw is in its quadding position, means for permitting a relative movement between the rod and sleeve, and pressure applying means selectively connectable to the rod and to the locking means, said pressure applying means when connected to the rod being operative to effect a movement of the rod relatively to the sleeve to back. off the jaw from its quadding position to permit the line to be expanded by spacebands to a corresponding extent, and being operative when connected to the, locking means to eifect a movement of the sleeve and rod in unison to urge the jaw inwardly to squeeze the line. i

, 19. A slug casting machine including, in combination, a pair of line clamping jaws movable one toward the other in quadding, mechanism for eifecting such quadding movement of the jaw, automatic means operable, under one condition, to move the jaw outwardly a limited distance from its line contacting position to permit theline to be expanded by spacebands to a correspondingextent and, under another condition, to urge the jaw inwardly to squeeze the line, justifying means for expanding the spacebands, and an automatic locking device for permitting the operation of the justifying means under said first mentioned condition and for preventing its opsaid second condition.

1 A slug casting bination, a pair of line clamping aws movable urge the jaw inwardly to squeeze the line, justifying means for expanding the spacebands, a locking device normally operative to prevent the means for releasing the locking device during the machine operation to permit justification to take place except when said mechanism is conditioned to squeeze the line.

22. A combination according to claim 21, in-

cluding other means for releasing said locking line contacting position, said locking device being movable when in engagement with the rod, a spring controlled in its operation from the main ing device and the rod to urge the jaw inwardly from its line contacting position for squeezing the line.

24. A combination according to by said spring.

25. A combination according to claim 23,

spring, a swinging lever actuable by the movement of said arm and pivoted to a second levere engageable with said locking device, and including a camming element arranged to be engaged by said swinging lever and as the latter swings effect a rectilinear movement thereof for rocking said second lever to depress the looking device.

. 26. A slug casting machine including, in combination, a pair of line clamping jaws movable one toward the other in quadding, mechanism including a vertically movable rod for effecting such line contacting movement of the jaw, pressure means operative thereafter through said rod either to back ofi the jaw to permit expansion of the line by spacebands or to urge the jaw inwardly to squeeze the line, a movable interponent for selectively connecting said pressure means to said rod to perform one or the other of saidfunctions, and a manually adjustable block adapted tobe moved into and out of the path of said interponent to prevent or permit movement of the latter in controlling the selective functioning of said pressure means.

27. A combination according to claim 26,

ment of said rod.

29. A combination according to claim 26,

ment of the interponent and thus selectively con- 31. A slug casting machine including, in combination, a pair of line clamping jaws movable one toward the other in quadding,

locking device for locking is in contact'with the line;

controlled from the main cam shaft of the machine and connectable to said short lever or to said locking device respectively to move the rod for backing off the jaw to permit expansion of the line by spacebands or for urging the jaw inwardly to squeeze the line, a vertically movable interponent normally maintained by a swinging lever in a raised position for connecting the spring pressure means swinging lever being supported by said longer lever to maintain the interponent in its raised position and being released by the jaw closing movement of said longer lever to permit the interponent to drop to a lower postion for connecting the spring pressure means to said short lever.

32. A combination according to claim 31, including a block carried by said short lever, the block being arranged to underlie said interponent and being adjustable to any one of three set positions, said block being formed with a top surface having a recess cut in one corner of its forward edge and the block, in one set position, standing clear of the interponent to permit movement of the latter for connecting the pressure means to said vertically movable rod to back off the jaw and, in a second position, having the unrecessed portion of its surface underlie the interponent to prevent movement thereof and maintain the connection between the pressure means and said rod for urging the jaw inwardly to squeeze the line and, in a third position, being located with the recessed portion of its surface underlying the interponent, whereby the recess allows the interponent to drop to connect the spring pressure means to the short lever to back off the jaw when the jaw closing movement of the short lever is insufficient to move the block so that the unrecessed portion thereof underlies the interponent and maintains it in its raised position.

33. A slug casting machine including, in combination, a pair of line clamping jaws, justifying mechanism for expanding a composed line of matrices between the jaws by spacebands, means for moving said jaws toward one another in quadding, and an automatic locking device independent of the line for locking the justifying mechanism to render it inoperative to expand the line when the latter is quadded.

34:. A slug casting machine including, in combination, a pair of line clamping jaws, justifying mechanism for expanding a composed line of matrices between the jaws by spacebands, said mechanism including a bar engageable with the spacebands and mounted on two vertically movable rods, means for moving said rods independently of one another during justification, means for moving said jaws toward one another in quadding, and an automatic locking device for looking both of said vertically movable rods to prevent justification of the line when the latter is quadded.

35. A combination according to claim 33, wherein said locking device is normally operative to prevent justification, and including means for rendering the locking device inoperative during regular machine operation.

36. A combination according to claim 34, wherein said locking device permits a limited movement of said justifying bar for the purpose stated.

37. A slug casting machine 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,

to the locking device, said,

means for urging said jaw inwardly from its line contacting position to squeeze the line, justifying mechanism for expanding the line between the jaws by spacebands, and automatic means to lock the justifying mechanism against operation when the line squeezing means is active.

38. A slug casting machine 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, automatic means operable, under one condition, to move the jaw outwardly a limited distance from it line contacting position to permit the line to be expanded by spacebands to a corresponding extent and, under another condition, to urge the jaw inwardly to squeeze the line, justifying mechanism for expanding the spacebands, and automatic means to lock the justifying mechanism against operation when a line squeeze is applied and to permit its operation when the jaw is moved outwardly from line contacting position.

39. A combination according to claim 37, wherein the justifying mechanism includes a bar engageable with the spacebands and mounted on two independently actuable vertically movable rods, and wherein two locks are provided, one for each rod, to prevent the independent actuation thereof.

40. A combination according to claim 38, wherein said locking means is normally active to prevent justification, and is automatically rendered inactive for regular machine operation and when the jaw is moved outwardly from its line contacting position in quadding.

41. A combination according to claim 38,

wherein said locking means when active permits a limited movement of said justifying bar for the purpose stated.

42. A slug casting machine 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 including a vertically movable rod, automatic means operable through said jaw moving rod, under one condition, to move the jaw outwardly a limited distance from its line contacting position to permit the line to be expanded by spacebands to a corresponding extent and, under another condition, to urge the jaw inwardly to squeeze the line, said means including a spring controlled from the main cam shaft of the machine and a movable interponent for selectively connecting the spring to one or the other of two trains of connections leading to the jaw moving rod, a justification bar engageable with the spacebands and mounted on two independently actuable vertically movable rods, two locks normally engaged one with each of said bar supporting rods to prevent the actuation thereof, the locks being connected to one another to operate in unison, and connections between said interponent and the locks to control their release by the movement of the interponent, whereby the locks are rendered active to prevent justification when a line squeezing connection with the jaw moving rod is established by said interponent and are released to permit justification when the interponent is moved to establish a connection with the jaw moving rod to move the jaw outwardly from its line contacting position.

43. A. combination according to claim 42, including means for effecting the release of said locks by the idle movement of said jaw movin rod during regular machine operation.

JOHN H. HILPMAN.

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