US2051804A - Typographical slug casting machine - Google Patents

Description

1936. c. A. ALBRECHT 2,051,804

TYPOGRAPHICAL SLUG CASTING MACHINE Filed Feb. l4, 1934 9 Sheets-Sheet l Aug. 25, 1936. c. A. ALBRECHT 7 2,051,804

TYPOGRAPHICAL SLUG CASTING MACHINE Filed Feb. 14, 1934 9 Sheets-Sheet 2 Aug. 25, 1936. c. A. ALBRECHT 2,051,804

TYPOGRAPHICAL SLUG CASTING MACHINE Filed Feb. 14, 1934 9 Sheets-Sheet s Aug. 25, 1936.

c. A. ALBRECHT Filed Feb. 14, 1934 9 Sheets-Sheet 4 54% l 42 p 57 a 8 [m/emfm." 5.42. M

Aug. 25, 1936. c. A.--ALBRECHT 2,051,804

TYPOGRAPHICAL SLUG CASTING MACHINE Filed Feb, 14, 1934 9 Shets-Sheet 5 Fly 16.

Fly. 12

Aug. 25, 1936.

C. A. ALBRECHT TYPOGRAPHICAL SLUG CASTING MACHINE Filed Feb. 14, 1934 9 Sheets-Sheet 6 Aug. 25; 1936. c. A. ALBRECHT TYPOGRAPHICAL SLUG CASTING MACHINE Filed Feb. 14, 1934 9 Sheets-Sheet. 7

I l l I l L-l [mr'enior (1Q. W BY W:

Aug. 25, 1936. c. A. ALBRECHT 2,051,304

TYPOGRAPHICAL SLUG CASTING MACHINE 7 Filed Feb. 14, 1934 9 Sheets-Sheet 8 a2 03 77 rzyza. 9/ 1 .31. P |l\ LAM-m Aug. 25, 1936. c. A. ALBRECHT TYPOGRA PHICAL SLUG CASTING MACHINE 9 Sheets-Shet 9 Filed Feb. 14, 1934 Patented Aug. 25, 1936 UNITED STATES TYPOGRAPHICAL SLUG CASTING MACHI Christian Augustus Albrecht, Berlin, Germany, assignor to Mergenthaler Linotype Company,

Brooklyn, N. Y.

Application February 14, 1934, Serial No. 711,119 2 In Germany February 1'7, 1933 45 Claims.

In matrix composing and line casting machines, in which the composed line is clamped between two vise jaws for presentation to the casting mechanism, it has already been proposed, when casting lines of shorter length than those corresponding to the length of the casting mold -slot, to move the vise jaws relatively to one another by a special operating mechanism, so that, according to the adjustments made, the line will be centred or quadded to one side or the other of the cast slug. In arrangements of this kind, it has already been proposed, to subject both jaws to longitudinal displacement and to control them by a vertically movable rod actuated by levers or links. This rod operates through a disc or collar upon studs carried by levers connected to the adjustable jaws, the said disc or collar being provided with gaps which can be positioned, by rotation of the collar, to actuate either or both of the jaws. When both jaws are operated'the line will be centred, when either jaw is operated independently the line will be quadded to one side -or the other, and when both jaws are disconnected, the device will be inoperative.

The object of the present invention is a further development of this arrangement and. more especially is productive of a considerable simplification of the operating mechanism of the controls, the connecting and disconnecting means, and the pump operating mechanism connected with the said arrangement. The specific improvements 'according to the invention are fully set forth in the detailed description to follow, and illustrated in the accompanying drawings:-

In the said drawings, which illustrate by way of example, different constructional forms of the devices according to the invention:--

Figure 1 is a front elevation of the pertinent parts of a machine showing the application thereto of one constructional form of the invention;

Figure 2 is a view similar to Figure 1, showing the devices in an inoperative position; 7

Figures 3 to 6 are horizontal sections, each taken on the line 3 -3 of Figure 2, showing certain of the parts in respectively different positions of adjustment; I

Figure 7 is a side elevation of part of the rod represented in section at the left-hand side of Figures 3 to 6; v

Figure 8 is'a front elevation, partly in section,

I of a portion of the mechanism shown in Figures 1 and 2, drawn to a larger scale than the said figures;

Figure 9 is a side elevation of the upper part of Figure 8, as seen from the left-hand side of that figure;

Figure 10 is a section taken on the line Ill-l0 of Figure 9, as viewed in the direction of the arrows of that figure;

Figure 11 is a sectional plan view line llll of Figure 8; V

Figure 12 is a left-hand side elevation of the lower part of Figure 8;

Figure 13 is a vertical section of a portion of Figure 1 on an enlarged scale;

Figure 14 is a plan of the parts shown in Figure 13;

Figure 15 is a vertical section taken on the line 15-45 of Figure 1, as seen in of the arrows;

Figure 16 is a front elevation of supplementary means for facilitating the alternate setting of full lines and lines to be quadded;

taken on the Figure 17 is a side elevation of a portion of;

Figure 16, but drawn to a larger scale;

Figure 18 shows a portion of Figure 16, partly in sectionand "drawn to a larger scale;

Figure 19 is a front elevation of a modified form of the means shown in Figures 16 to 18;

Figure 20 is a plan thereof, partly in section;

Figure 21 shows a portion of Figure 19 with the parts in respectively different positions;

Figure22 is a front elevation, similar to Figure 1, but partly in section, showing a modified constructional form of certain of the parts;

Figure 23 is a horizontal section taken on the line 2323 of Figure 22, drawn to a larger scale;

Figures 24, 25 and 26 illustrate, on a still larger scale, various positions of adjustment of the means controlling the inward movement of the Ja s;

Figure 27 illustrates, also on an enlarged scale as compared with Figure 1, the jaw-tightening ratchet mechanism and part of the pump stopping device controlled thereby;

Figure 28 is an enlarged front elevation, partly in section, of a modified constructional form of the gearing connecting the ratchet mechanism with the rod controlling the movement of the.

aws;

Figure 29 is a diagrammatic side elevation of the justifier operating devices, and

Figures 30 and 31 are respectively a front elevation and a vertical section of a special constructional form of the guideway for the clamping aws. V

In the drawings, l is the so-called vise frame, which, as customary, is pivotally mounted in the machine frame by studs l and 2, 3 are the the direction 15 particularly Figure 13) 2 the handle is shown adjusted to its tion indicated inFigures 3 of turning. Th r 131 or integralwith, two downwardly extending see line-clamping jaws which are slidably guided in the vice frame I. To enable the jaws to be moved for centring a short line, or for quadding a short line either to the right or to the left, and to close the portion of the mold slot not closed by the line itself, these jaws are pivotally connected to levers 6 and 1 respectively by two links 4 and 5. The levers 6, I, are respectively pivoted on the vise frame by studs 8 and 9. Fast to the respective levers 6, l, are arms l and H. The arm carries a pin I2 (Figures 3 to 6), and the arm ID has at its forward end, an aperture through which is adapted to pass a pin |4 carried by one arm of a two-armed lever 3. The lever i3 is also pivoted on the stud 8, but is free to move axially thereon, and its free end is engaged within an inclined slot l5 inja vertical rod l6 (see particularly Figure '7). The raising and lowering of the rod |6 thus moves the lever to and fro along the stud 8, therebyeither re'- tracting the pinto the position in which it is shown in Figure 3, or protruding it beyond the face 'of the lever It] to the position in which it is shown in Figures 4 to 8.

The two pins l2 and M are located in a plane lying between 'two discs H and I8 which are rigidly secured to a vertically movable sleeve vf9, which may be turned so as to bring the discs into one or another of the three positions shown in Figures 4 to 6. A segment of the upper disc I? is cut away so that, according to the angular position of the discs andthe position of the pin M, the pins l2, l4 and levers IO, N, may be selectively actuated by vertical'movement of the sleeve l9. This will be understood by reference to Figures 3 to 6. Figure 3 shows the position in which neither of the pins will be engaged by thedisc Figure 4 that in which only the pin I4 will be so engaged; Figure 5 the position inwhich both pins will be engaged, and Figure 6 the position in which the pin 12 only will be engaged.

The turning of the sleeve 19 is effected by a toothed wheel 26, the hub 2| of which is 50mnailed in a bearing 22 on the vise frame, (see A set screw 23 in said bearing, engagesa circumferential groove in the hub 2|,so thatthe wheel 20 is permitted to turn but is held against'axial movement. The wheel 20 engages'a vertical groove. 28 in the sleeve l9 by a key or feather 20 so that the sleeve can move axially relatively to the wheel but must mo'veangularly therewith. The wheel 20 meshes with a rack '24 on a slide"25, which latter carries "a second rack 26 (Figures 1 and '2), meshing with a toothed wheel "2. The toothed wheel 2'! is rotatable on a stud fast on the vise frame and can bead-juste'd, by means of acraink'handle 28, to three different positions in any one of which it can be locked by a spring plunger 29 engaging an appropriate hole in a fixed segment 30. In Figure 1 the crank handle 28 is shown 'in its central position appropriate to the position of the disc I illustrated in Figure 5, while in Figure topmost I1 and I8 to theposiand 4. When the handle 28 is in the third position (not shown) in 'wh'ichit isdirected downwardly, the disc I! will beipositioned as in Figure 6-so that it "can act only upon the stud 12.

The sleeve l9, guided in the bearing 22,"encircles a rod 3| relatively to 'whic'h'it is capable is rigidly connected 'to,

position for settingthe discs the fiat face 39 of the rod section 33 and thereends of two springs fFigure 1 2, it will contact swing -'the=detent '5|l =in thedirection indicated by the arrow in Figure 11, out of engagement with tions 32, 33; the complete rod thus constituted is designated by the numeral 3| where hereinafter referred to as a whole. The section 32 has a di ameter larger than that of either the section 33 or the section 3|. Two shoulders are thus formed, 5 the upper one of which engages the lower end of the-sleeve l9 and, together with a disc 3| secured to the top of the section 3 I, prevents relative longitudinal movement of the sleeve. The lower shoulder 32 co-operates with a detent 34. This detent is pivotally mounted upon a shaft 35 (Figure 8) and has pivoted to it a bar 36, which, as shown in Figure 2, has a U-shaped slot 31 through which passes a pin 38 fast to the vise frame. By engaging the respective ends of the slot over the pin the bar can be locked in one or other of the two terminal positions shown respectively in Figures 1 and 2. In the position indicated in Figure 2, the detent 34 is in engagement with the shoulder 32 and the rod 3| thereby held against downward movement, whereas, in the second position indicated in Figures 1 and 8, the detent 34 is withdrawn and leaves the rod free.

The rod section 33 has a flattened portion 39 against the surface of which (see particularly Figures 8 and 12), a roller 40 is adapted to bear. This roller 40 is eccentrically mounted on a shaft 4| to which is fast a lever 42 carrying two abutment screws 43 and 44. The lever 42 is con- 30 strained to move clockwise, as viewed in Figure 12, by a spring 45. The screw 44 limits the said clockwise movement by contacting with an abutment "surface formed on the vise frame. The second abutment screw 43 is engaged by the front end of the justification lever 46 during the latters descent.

The justification lever 46, when at rest, is in some extent depressed by it against the action of the spring 45. In consequence of the eccentricity of the r0ller 40 to the shaft 4|, said roller, when the lever is depressed, will be pressed against by securely clamped and temporarily lock the rod in position. The supplemental downward movement of the justification lever 46 is effected for this purpose by an additional cam surface on a the justification cam,

and in Figure 12 the lever 46 is shown near the completion of its descent.

At the lowerendof the rod section 33 is mounted a cross bar 41 to which are attached the upper 48, whose lower ends are connected to two arms or'brackets 49 fast to the vise frame. The springs 48 constantly tend to pull downwardly the rod 3| and the parts associated therewith. "In order to lock the rod against the action 'of'the springs 48, a further detentfSU is provided, the form and action of (30 which will be explained by reference to Figures "8, 11 and 12. The detent 50 is pivoted to swing in a horizontal 'plane about a fixed stud "5| on the vise frame; "it is in the form of a hook' 'shaped flat plate and is adapted to an annular recess" 52 in the engage edgewise'with rod section 33, under the influence of a spring 53. At one end the detent-50 is provided with adownwardly extending arm 54 'in'a position to be engag'edbythe justification lever 46. When the latter is moved upwardly'beyond the'position in which it is shown in with the arm 54 and the annular recess 52, thus releasing the rod 3| which, provided the detent 34 is in the disengaged position shown in Figure 1, will be drawn down by the springs 48.

The raising of the rod 3| and its associated parts, and the extending or re-energizing of the springs 48, are effected by the lever 55, which raises the first elevator to its topmost position. This lever 55 is of known form and only a portion of its front end is represented in the drawings. As shown inFigure 15, said front end is pivotally connected to one end of a link 56, whose other end is connected to the first elevator 88 by a pin 51 and slot 58. A tension spring 59 interposed between the link,56 and the first elevator 80, normally holds the pin 51 against the upper end of the slot 58, and retains it in that position during the ascent of the first elevator. The first elevator cam is provided with a supplemental cam surface to give the lever 55 an upward movement in excess of that required to bring the elevator to its topmost position. During this excess movement, which is permitted by the pin and slot connection 51, 58, and the extension of the spring 59, the lever 55 contacts with the lower end 60 of the rod 3| and raises the latter against the action of the springs 48.

The rod section 32 is provided with a Vertical rack 6| (Figures 1, 2 and 8), with which engages a pinion 62 on the shaft 35, said shaft being carried by a bracket 63 fast to the vise frame. The shaft 35 has fast on it a ratchet wheel 64 which serves, in co-operation with a pawl 65, for locking the shaft as hereinafter described. The locking pawl 65 is pivoted at 61 to a lever 68 loosely mounted on the shaft 35, and which lever has fixed to it a pin 66 adapted to bear against the outer edge of the detent 34. A spring 66 fastened at one end to a pin I56 on the side face of the pawl 65 and at the opposite end to a pin 66 on the adjacent side face of the lever 68, holds the pawl against the pin 66 and out of engagement with the ratchet 64, and a spring 69 acting on the lever 68 normally maintains the pin 66 in engagement with the detent 34. When the detent 34 is brought into the position in which it is shown in Figure 8, the lever 68 and pawl 65, through the pin 66, are moved as a unit against the action of the spring 69 to bring'the lever and an extension I55 on the pawl into the path of a collar 18 on the justification rod 11.

The metal pump of the machine is locked in the usual manner by the pump stop lever 15, which just before each casting operation, is actuated towards the right, as viewed in Figures 1 and 2, to release the pump. According to the constructional form of the invention now being dealt with, this release is effected through a lever 13 pivoted at 14 to the vise frame, by the connections next to be described. The lever 68 (see Figure 10) is provided with a pin 18, and upon the shaft 35 is loosely mounted a further arm 1| formed with a shoulder 12 against which the pin 18 is caused to bear when the lever 68 is turned in the direction indicated by the arrow in Figure 10, or counter-clockwise in Figure-8. The arm '1I (Figures 1, 2 and 8) is pivotally connected to the lower end of a vertically guided bar 12 whose upper end is pivoted to the lever 13, the free end of which, in known manner, bears against the pump stop lever 15. A spring 16 normally holds the lever 13 in its inactive position. Near the completion of the justification operation, when the pawl extension 65 and the lever 68 are successively engaged by the collar 18 ,on the justification rod 11, the pawl is brought "into engagement with the ratchet 64 and the .with therelease of the pump, the locking pawl 65, 5

then in engagement with the ratchet wheel 64, will be rocked by the movement of the lever 68, and the said wheel, together with the toothed pinion 62, will be moved clockwise as viewed in Figure 8, so. that, through the rack 6| and springs 10 48, the rod 3| will be depressed, and the jaws 2, 3, therebytightened on to the composed matrix line located between them;

The longitudinal movement of the vertical rod I6 is effected by the locking detent 34 through 16 an arm 19 connected to the said detent.

The operation of the parts so far described is as follows2-When it is desired to operate the machine normally the bar 36 is moved to the positionl in which it is shown in Figure 2, so that 20 the detent 34 looks the rod 3| in its raised position. Consequently, although each operative movement of the justification lever 46 brings the detent 5D, 54 out of engagement with the rod 3|, said rod will remain stationary.v Moreover, in the 25 inactive setting of the parts, the lever I3, through the rod I6, has been moved to the position shown in Figure 3, the pin I4 being thereby retracted, and the disc I1 is independently adjusted to the position indicated in Figure 3, out of engaging 30 relationship to. the lever II; hence the levers I5,

, II, and the jaws 2, 3, are free to move inde end- I9, determined by the position of the crank handle 28, the disc I1 when descending will take with it either one or both of the pins I2, I4, and thus ;45 move one or both of the vise jaws 2, 3, inwards to bring them into contact with each other or with the respective ends of the composed line between them.

During the downward movement of the rod 3!, ,50 i. e., when either or both of the jaws 2, 3, move inwardly, the shaft 35 will be turned idly by the engagement of the rack bar 6| with the toothed wheel 62. Shortly after the completion of said downward movement, however, the collar 18 on -55 the justification rod 11, contacts with the pawl 65 and immediately thereafter with the lever 68, so that its pin 1Il.will rock the lever 1| downwardly and the locking pawl 65, also carried by the lever 68, will act on the ratchet wheel 64. 0

The pump will thus be released through the lever 1I, so as to permit the casting operation to take place, and downward pressure will be applied to the rod 3| through the toothed wheel 62 by the action of the pawl 65 on the ratchet wheel 64, 5 to tighten the jaws on the line.

After casting, the first elevator in the wellknown manner raises the composed line out of the vise to enable it to be transferred to the distributing mechanism. However, before them line is removed from between the jaws, the justification lever 46 willhave completed its downward movement, and brought the brake lever 42 into its active position to temporarily hold down the rod 3|. This prevents the two jaws 2, 3, from violently contacting with each other under the action of the springs 48, when the matrix line is removed from between them.

After the first elevator has reached its uppermost position, the first elevator lever 55, by its supplemental upward movement permitted by the spring 59, raises the rod 3|, the brake lever 42 having in the meantime been released by an upward movement of the justification lever 46, until the detent 58 again enters the groove 52 of the rod section 33, the springs 48 being thus extended and the parts retained in the normal position preparatory to the initiation of the next cycle of operations. The device continues to operate at every operativecycle of the machine until the rod 3| is again locked and the pins I2 and M are again released by returning the bar 36 and the crank handle 38 to the position in which they are shown in Figure 2.

When casting alternately lines of full length, (i. e. lines not to be quadded or centred) and shorter lines to be centred or quadded, it is not necessary to throw the device out of action for alternate casts by shifting the bar 36. Under those conditions, however, it may happen that full-length lines or lines to be quadded, which contain spacebands, may be so tightly clamped by the jaws, that the 'justifier cannot actuate the spacebands to effect proper justification. In order to overcome this difficulty the mechanism illustrated in Figures 16 to 18 may be provided. According to the arrangement there shown, an additional ratchet wheel Si is fixed to the shaft 35, and a pawl 82 adapted to engage therewith is pivoted to the inclined link 83 which, as ordinarily, serves'to control the justification bar 84. The action of the pawl 82 on the ratchet wheel 8| is controlled by a cam-shaped shroud 85 rigidly attached to the machine frame, as by a bracket 86. The shroud 85 is formed so that the pawl 82 can engage the ratchet wheel 8| only when the link 83 reaches a certain position and so as to ensure that the ratchet wheel can be turned to a definite extent only. The pawl is disengaged from the ratchet wheel on further movement of the link 83 by an inclined surface on the shroud 85. If for constructional reasons the shroud 85 cannot limit sufficiently the rotation of the ratchet wheel 8| under the action of the pawl 82, there may be provided, as shown in Figure 18, a segmental slot in the hub of the wheel 8| and a pin on the shaft 35 extending .into the slot, the arrangement being such that the ratchet wheel 8| will turn idly to the extent of the play permitted by the slot before taking the shaft 35 with it. According to this arrangement, shortly before the justification bar 84 comes into contact with the feet of the spacebands to effect the expansion of the latter, the pawl '82 will engage the ratchet wheel 8| and turn it together with the shaft 35, which is then not locked by the pawl65, as such locking takes place, as previously explained, at the completion of justification. The shaft 35 when thus turned by the pawl 82, takes with it the toothed wheel 62 and the latter through the rack 6| raises the rod 3|, thus moving the two jaws 2, 3, outwardly to slacken the line to the required extent.

While slackening of the line as just described 'for the purpose of permitting justification to take place, is necessary in the case of full-length lines,

means for preventing the outward line-slackening movement of the jaws'in the-case of lines which are to be centred. Such means are illustrated in Figures 19, 20 and 21. V

In this construction the pawl. 82 has a roller 82%, bearing on the :cam-shaped shroud 85, which controls .the actuation of the ratchet wheel 8|,

as in the arrangement before described.

For the'angular adjustment of the sleeve IS in this constructional form of apparatus, the handle 28, instead of being in theform of a crank aspreviously described, -is inthe form of a lever faston a shaft 28 to which is secured a lever 28* connected'byalink 28 (shown in dotted lines in Figure 10) to the rack bar 25.

The lever 28 has a cam arm Hi1, arranged to engagea slide I88 constantly held in contact with i the cam arm by a spring I89. The slide 108 has a downwardly directed arm H] which is forked at :its extremity to engage a stud onaslide -|'|2 movable laterally, in a fixed guide, towards andaway from the pawl'82. When the cam arm -|8| occupies the intermediate position in which it is-shown in full lines in Figure 20, the slides 38, H2, will be in their rightmost positions as viewed in that figure, so that, through the roller 82*, the pawl 82 (as'shown in Figure 19) is held outof engagement with the ratchet wheel 8|. 0n the other hand, in'the extreme left and right positions of the hand lever 28, (the latter being indicated in dotted lines in Figure 20) the cam arm I81 permits the slide |88 to move leftward, under the-action of the'spring I89, the roller 82 then engaging with the shroud 85 (see Figure 21) so that theslackening of the line is effected in the manner described above.

It will now be understood that when full-length lines only are required to be cast, the quadding and centring apparatus according to the invention can be thrown out of action, and that when casting alternately full length lines, or shorter lines to becentredor'quadded, the apparatus may remain operativelyconnected. In the latter case,

when dealing with full length lines, the beforedescribed'means for tightening the jaws on to the line would remain operative, although such tightening of the jaws is not actually required in the case of full lines because one of the jaws (usually the left-hand jaw) bears against a stop which is adjustable for the length of line required, and

cannot yield, and therefore the line is properly out by justification is so calculated that it will approximatelycorrespond to the justification capacity of the spacebands present in a normal line of the required'length'for example, 1 em for short lines, 2 ems'for lines of medium length, and 3 ems for long lines.

The arrangement provided according to the invention, therefore, is designed to be adjusted for one, two or three ems maximum slackness, and

prevents the operation of the device for tightening'the'jaws after justification, when the amount of space to be filled out by justification does not exceed one, two orthree ems as the case may be.

If this amount is exceeded, then the line will be automatically centred or quadded; but, if these amounts are not exceeded, the line will be cast as a full line, except in the case of the spacebands being too few to take up the amount allowed for justification when the pump stop will become operative and the line will not be cast at all. If, with the application of the device according to the present invention, it is desired to obtain a centred or quadded line, although there is less than the pre-selected amount of one, two or three ems available in the line, the remaining portion of the mounted thereon apivot 88 on which is carried a three-armed lever 90 which, by means of a handle -89 may be adjusted to four different positions.

When the lever 90 is in the position in which it is shown in dot-and-dash lines in Figure 22, the

device is inoperative, while the positions indicated at I, II, III, correspond with the respective lengths of line required to be dealt with by the machine.

The position I, in which the lever 90 is represented in full lines in Figure 22, is that intended for short lines, position II for mediumjlength lines, and position III for long lines.

The pawl 65 is, in this constructional form, carried by an arm SI on a pivot 92 (see particularly Figure 27). The arm 9i carries a pin 93 against which is adapted to bear a projection 94 fast to the lower arm of the three-armed lever 90. The

position (I, II or III) occupied by the three-armed lever 90 therefore determines the level at which the projection 9 3 will hold the pin 93 and arm SI, and the position of the pawl I35 relatively to the toothed portion of the ratchet wheel 64. The operative positions of the pawl 65 corresponding to the positions I, II and III of the lever 90 are shown respectively in Figures 24, and 26. The pawl 65 normally bears on a toothless part of the ratchet wheel 64. When the lever 90 is in the 1 position I, the distance of the pawl 65 from the nearest ratchet tooth will be comparatively small, as indicated in Figure 24, but for the positions II and III (Figures 25 and 26) it will be progressively greater.

This mechanism operates as followsz-When short lines are to be composed, the lever 90 is adjusted to the position I. The operator when he intends to cast full lines (no-t quadded or centred) must be careful that the line, as composed, is not more than one em short of the desired full-line length. After the composed line is sent away with an allowance for justification up to one em, and is justified, the rod 3| will first be released through the justification lever as above described, and the vise jaws will tend tomove inwards un-- der the action of the springs 48.

If the space left in the line is at the most one em, the jaws and the rod M will make only a small movement and the consequent clockwise rotation of the ratchet wheel 64, as viewed in Figure 24, will be so small that no tooth thereof will be brought within range of the pawl 65, so that justification can proceed in the ordinary manner, the left-hand jaw bearing against its stop, as ordinarily, and a full line will result. The pawl 65, under these conditions, remains inoperative.

Corresponding action will take place when, for medium or long lines, the lever 90 is adjusted to the position II or III, the extent of the downward movement of the rod 3I and of the clockwise ro-' tation of the ratchet wheel 64 with the detent 65 still on the toothless portion being corresponding? ly greater, so that two or three ems may remain to be taken up by justification of the line without any tooth of the wheel 64 being engaged by the pawl 65.

If the line, whenthe lever 90 is adjusted to the position I, is more than one em short, or if, when the lever is adjusted to the position II or III the line is more than two ems or three ems short, the rod 3| will descend far enough to enable the pawl 65 to operatively engage the ratchet wheel 64, and consequently, at the end of the justification operation, the said wheel will be turned by the pawl 65, the rod 3I will be pulled further downwardly and the vise jaws will be pressed tightly against the line. This will result in a centred or quadded line being cast. When the lever 90 is adjusted to the out position, that is, the posi tion in which it is represented in dot-ancl-dash lines in Figure 22, the pawl 65 will be brought entirely out of engaging relationship with the ratchet wheel 64.

The actuation of the pawl 65 is efiectedby the justification lever 46, or a collar on the justification rod 11, coming into contact with the lower hook-shaped end 95 of said pawl and turning the latter together with the arm 9|. During the said movement, the pin 93 will engage the free arm of a two-armed lever 96 pivoted at 91 to the vise frame and whose second arm, through a link 98, is connected to a bell-crank lever 99,

which is pivotally connected to the lower end of a vertically movable rod I00,- as shown in Figure 22. This rod I00 serves to operate the pump stop, for which purpose it is connected to a vertical slide IOI which is adapted to co-operate with a horizontal sliding rod I02. The slide IOI is formed with two recesses one above the other.. When the rod I02 is in engagement with one of these recesses, the pump stop lever 15 is in its locking position.- When the line is justified, the slide IOI will be pulled downwardly through the swinging movement of the arm 9|, andwhen justification takes place in the ordinary manner, the sliding rod I02 will reach the raised portion of the slide IN and. the pump will be free to operate. If a the path travelled by the justification mecha-.

nism is in this case comparatively large the arm 9 I, and with it the mechanism actuating the slide IOI, will be moved to a comparatively large extent, so that the sliding rod I02 will drop from the raised portion of the slide IOI into the notch I03, and the pump will consequently again be locked.

It may happen that the pawl engages very closely and Without any play, one of the teeth of the ratchet wheel 64 and that the said wheel cannot turn. The result of this is that, when justification takes place, the pawl 65 cannot'move and the slide IGI will not be actuated, so that the pump remains inactive and no cast is made. In order to overcome this difiiculty, the rack engaging the wheel 62 is formed on a special sleeve I04, which, as shown in Figure 28, is capable of moving to a slight extent on and relatively-to- Two springs I05, I06, hold the said' This arrangement renders it possible for scribed, inasmuch as the said pawl will cause the sleeve IM to be depressed by the wheel 62, against the action of the spring. I05, when the shaft 35 begins to turn. Through this movement the slide IflI will be pulled downwardly and the pump will be released as previously described. The second spring IE6 is intended to give the rack bar a certain flexibility in the other direction, namely, when the before-described pawl 82, through close engagement with the wheel BI is unable to perform any movement. This happens when a line is so tight that movement of the jaws for slackening purposes is not practicable. The pawl 82 then becomes fast in the ratchet wheel ill and breakage would occur when justification takes place. Such breakage, however, is prevented in this case by the spring I06 yielding for, although the rod 3| remains stationary, the ratchet wheel 8| will be moved under the action of the pawl 82.

Obviously the springs I05 and I06 must be of suflicient strength to prevent them fromyielding when the pawl 65 or 82 operates ordinarily. These springs may be substituted by a spring. engaging either the wheel 62 or the wheel 64 and a. spring engaging the wheel 8|.

In carrying out the invention, more especially when dealing with the alternate production of full. lines and linesto be centered, the usual justification operating spring, by which the justifica- "tion lever ismoved, may not be sufliciently strong to effect satisfactory justification by reason of the additional pressure exerted on the matrix line by the centring device. The employment of a stronger spring is not practicable, because the. pressure exerted by such a spring, through. the justification lever, against the cam disc-which operates it would result inundesirable wear of the cam and, further, the counter-pressure exerted upon the main shaft would at timesbe sov great that it might affect the regular working of the machine.

It is, therefore, a feature of the present invention to provide counter-balancing: means for the justification mechanism while leaving the justification spring at its normal strength. The preferred constructional form of this feature of the invention is illustrated diagrammatically in Figure 29., wherein I I3 represents the main frame of the machine, M4 the main shaft which carries the cam I:I5.which. controls the justification lever G6. The said lever is pivoted to the machine frame at H6 and. carries a. roller I'II bearing against the cam. I-Iil under the influence, of a spring II 8:- acting through a rod H8. The front end of the justification lever 46 is fork-shaped and embraces the respective rod 11- of the. justification mechanism, which: it operates through a collar or projection. such as I8, in the well-known manner.

The counter-balancing means provided according to this constructional form of the device is in the form of an additional spring [20' adapted to urge the lower end of the. rod 11 upwardly. This spring. I-2Il is of such strength that at the. instant at which the justification lever 4.6 comes into contact. with the collar I8, the, weight: of the justification mechanism is, practically completely counterbalanced. The spring IIBJ, being thus relieved of the weight of the mechanism, will exert sufficient power on the. spacebands, through the justification bar 84, to readily efiect proper justification.

As there are two justification rods (11.; 8.1), in parallel relationship, two springs I20.- could be provided in place of a. single. spring of greater strength. Moreover, counterweights or other means for exerting upward pressure on the rods could be substituted for springs.

Further, in order to reduce friction and thereby secure smoother operation of the apparatus, the laws 2, 3, may beguided by rollers. A constructional form of such a roller guiding arrangement is illustrated in Figures 30 and 31 applied to the vise jaw 2. This jaw, like the jaw 3, is attached in the usual manner to a block I2I which is guided in the vise head. The block I2I may be provided with rollers I22 which run along the lower guiding surface of the vise head, or rollers I23 running along the upper guiding surfaces, or with rollers I22 and I23 as shown engaging both guiding surfaces.

It is to be understood that the particular constructional forms of the devices hereinbefore described and illustrated in the drawings are selected only as convenient examples of the means for carrying out the invention, and that modifica tions in the said forms may be made without departing from the invention. For example, instead of the rod I6 engaging with the lever I3, through the inclined slot I5, a lever connection could be substituted, and the device could be operated by levers other than the justification lever. Any other suitably operated lever already on the machine might be employed, or a special lever. controlled from the cam shaft.

Having described my invention, I declare that what I claim and desire to secure by Letters Patent is:-

1. In a typographical slug casting machine, the combination with a pair of jaws between which a composed line is clamped, a rod reciprocable to move said jaws towards and from each other and means for selectively coupling the line-clamping jaws with the rod, of a primary locking device for maintaining the rod in its normal position of rest and adapted to be thrown into and out of action at will and a secondary normally active locking device for the rod adapted to be released by a periodically operated member of the machine during each operative cycle.

2. In a typographical slug casting machine, the combination with a pair of jaws between which acomposed line is clamped, a rod reciprocable to move said jaws towards and from each other and means for selectively coupling the line-clamping jaws with the rod, of a primary locking de- Vice for the rod adapted to be thrown into and out of action at will, and means adapted automatically to break the connection between one of the jaws and the rod when the primary looking device is rendered operative.

3. In a typographical slug casting machine, the combination with a pair of jaws between which a composed line is clamped, a rod reciprocable to move saidjaws towards and from each other and means for selectively coupling the line-clamping jaws with the rod, comprising a disc angularly adjustable on the rod and two levers each having one arm connected to a respective jaw and a pin on its other arm adapted to engage beneath said disc, of a primary locking device for the rod adapted to be thrown into and out of action at will and means adapted automatically to move one of the pins out of engaging relationship with the disc when said primary locking device is rendered operative.

4. In a typographical slug casting machine the combination of a pair of jaws between which a composed line of matrices and spacebands is clamped, a justification lever by which the spaceplh bands are expanded to justify the line, a reciprocable rod spring-actuated to move the lineclamping jaws towards the line, means for selectively coupling the line-clamping jaws with the rod, supplemental rod-actuating mechanism operated by the justification lever to tighten the jaws against the line after the jaws are closed thereon, and a normally active locking device for the rod adapted to be released by a periodically operated member of the machine during each operative cycle.

5. In a typographical slug casting machine the combination of a pair of jaws between which a composed line of matrices and spacebands is clamped, a justification lever by which the spacebands are expanded to justify the line, a reciprocable rod spring-actuated to move the lineclamping jaws towards the line, means for selectively coupling the line-clamping jaws with the rod, supplemental rod-actuating mechanism operated by the justification lever to tighten the jaws against the line after the jaws are closed thereon, and a. normally active locking device for the rod adapted to be released by the justification lever during each operative cycle.

6. In a typographical slug casting machine, the combination of a pair of jaws between which a composed line of matrices and spacebands is clamped, a justification lever by which the spacebands are expanded to justify the line, a reciprocable rod spring-actuated to move the lineclamping jaws towards the line, means for selectively coupling the line-clamping jaws with the rod, supplemental rod-actuating mechanism comprising a ratchet wheel and a pawl operated by the justification lever to tighten the jaws against the line after the jaws are closed thereon, a primary locking device for the rod adapted to be: thrown into and out of action at will, and means adapted to move the pawl of the supplemental rod-actuating mechanism into and out of engaging relationship to its ratchet wheel when said locking device is moved to inactive and active position respectively.

7. In a typographical slug casting machine, the combination of a pair of jaws between which a line is clamped, a rod reciprocable to close and open said jaws, means for selectively coupling the line-clamping jaws with the rod, a locking device normally active to retain the rod in a normal position in which it holds the jaws apart, means adapted to release said locking device during each operative cycle of the machine to permit the jawclosing movement of the rod, and means adapted .to return the rod to said normal position atthe completion of each operative cycle.

8. In a typographical slug casting machine, the combination of a pair of jaws between which a lineis clamped, a rod reciprocable to close and =open said jaws, means for selectively coupling the line-clamping jaws with the rod, a locking device normally active to retain the rod in a normal position in which it holds the jaws apart, means adapted to release said locking device during each operative cycle of the machine to permit the jawclosing movement of the rod, means adapted to return the rod to said normal position at the completion of each operative cycle, and a brake device rendered operative to lock the rod when the composed line is removed from between the jaws after casting and prior to the return of the rod. to normal position.

9. In a typographical slug casting machine, the combination of a pair of jaws between which a line of matrices and spacebands is clamped, a

justification lever by which the spacebands are expanded to justify the line, a reciprocable rod spring-actuated to close the line-clamping jaws;

means for selectively coupling said jaws with the rod, a locking device normally active to lock the rod in said normal position and adapted to be released by movement of the justification lever to permit the jaw-closing movement of the rod, a

periodically operated lever adapted to return the rod to normal position after removal of the line from between thejaws, and a brake device actuated by the justification lever to temporarily lock.

the rod against jaw-closing movement during the period between the said removal of the line and clamped, a justification lever by which the spacebands are expanded to justify the line, a pump stop lever operable to release the pump when a line is properly justified, a reciprocable rod spring-actuated to move the line-clamping jaws towards the line, means for selectively coupling,

the line-clamping jaws with the rod, supplemental rod-actuating mechanism operated by the justification lever to tighten the jaws against the line after the jaws are closed thereon, and. connections from said supplemental rod-actuating mechanism to the pump stop lever adapted to release the pump simultaneously with the actuation of said supplemental rod-actuating mechanism.

12. In a typographical slug casting machine,

the combination of a pair of jaws between which a composed line of matrices and spacebands is clamped, a justification lever by which the spacebands are expanded to justify the line, a pump stop lever operable to release the pump when a line is properly justified, a reciprocable rod spring-actuated to move the line-clamping jaws towards the line, means for selectively coupling the line-clamping jaws with the rod, supplemental rod-actuating mechanism operated by the justification lever to tighten the jaws against the line after the jaws are closed thereon, connections from said supplemental rod-actuating mechanismto the pump stop lever adapted to release the pump simultaneously with the actuation of said supplemental rod-actuating mechanism, a primary locking device for the rod adapted to be thrown into and out of action at will and a secondary normally active locking de- 7 vice for the rod adapted to be released by the justification lever during each operative cycle.

13. In a typographical slug casting machine, the combination of a pair of line-clamping jaws, a rod reciprocable to close the jaws onto a composed line of matrices and spacebands located between the jaws and to open the jaws, means for selectively coupling the line-clamping jaws with the rod, a normally active locking device for the rod adapted to be released by a periodically operated member of the machine during each operative cycle, means adapted to justify a line held between the jaws, and means actuated by Mild for quadding or for centring a composed 'the jaws, means actuated by the justification "*posed line of matrices and spacebands located the justification means adapted to spread the line-clamping jaws slightly apart immediately before justification.

14. In a typographical slug casting machine, the combination of a pair of line-clamping jaws, a rod reciprocable to close the jaws onto a composed line of matrices and spacebands located between the jaws and to open the jaws, means adjustable for selectively coupling the jaws to the line, a normally active locking device for the rod adapted to be released by a periodically operated member of the machine during each operative cycle, means adapted to justify a line held between means adapted to spread the line-clamping jawsslightly apart immediately before justification, and means adapted automatically to render said jaw-spreading means inoperative simultaneously with the setting of the rod-and-jaw coupling means for centring.

15. In a typographical slug casting machine, the combination of a pair of line-clamping jaws, a rod reciprocable to close the jaws onto a combetween the jaws and to open the jaws, a member adjustable to selectively couple the jaws to the rod for quadding or for centring a composed line, a normally active locking device for the rod adapted to be released by a periodically operated member of the machine during each operative cycle, means adapted to justify a line held between the jaws, ratchet and pawl mechanism actuated by the justification means to spread the line-clamping jaws slightly apart immediately before justification, a slide adjustable to hold the pawl of said mechanism out of engagement with the ratchet, and connections between the adjustable rod-and-jaw coupling member and said slide adapted to move the latter to active position when adjusting said member for centring.

16. In a typographical slug casting machine, the combination of a pair of jaws between which a composed line of matrices and spacebands is clamped, a justification lever by which the spacebands are expanded to justify the line, a reciprocable rod spring-actuated to move the lineclamping jaws towards the line, means for selectively coupling the line-clamping jaws with the rod for quadding or centring a composed line, supplemental rod-actuating mechanism operated by the justification lever to tighten the jaws against the line after the jaws are closed thereon, means adapted to render the supplemental rod-actuating mechanism inoperative during the production of full lines when the device is set for quadding or centring, and a normally active locking device for the rod adapted to be released by a periodically operated member of the machine during each operative cycle.

17. In a typographical slug casting machine, the combination of a pair of jaws between which a composed line of matrices and spacebands is clamped, a justification lever by which the spacebands are expanded to justify the line, a reciprocable rod spring-actuated to move the lineclamping jaws towards the line, means for selectively coupling the line-clamping jaws with the rod, supplemental rod-actuating mechanism operated by the justification lever to tighten the jaws against the line after the jaws are closed thereon, said mechanism comprising a pawl and ratchet wheel toothed over only a part of its periphery, andmeans adapted to-adjust the'pawl to a position in which when actuated it will moveidly over the untoothed' part of the ratchet wheel. 18. In a typographical slug casting machine,

the combination ofa pair of jaws between which a composed line'of matrices and spacebands is clamped, a justification lever by which the spacebands are expanded to justify the line, a recip-- rocable rod spring-actuated to move the lineclamping jaws towards the line, means for selectively coupling the line-clamping jaws with the rod, supplemental rod-actuating mechanism operated by the justification lever to tighten the jaws against the line after the jaws are closed thereon, said mechanism comprising a pawl and 19. In a typographical slug casting machine,

the combination of a pair. of jaws between which a composed line of matrices and spacebands is clamped, a justification lever by which the spacebands are expanded to justify the line, a reciprocable rod spring-actuated to move the lineclamping jaws towards the line, means for selectively coupling the line-clamping jaws with the rod, supplemental rod-actuating mechanism operated by the justification lever to tighten the jaws against the line after the jaws are closed thereon, said mechanism comprising a ratchet wheel, an arm adapted to rock about the axis of the ratchet wheel and a pawl. pivoted to said arm, and an independently pivoted lever bearmg against and adjustable to vary the angular position of said arm relatively to the ratchet. wheel to ensure the engagement of the pawl with.

the ratchet wheel teeth in different positions. to

a composed line of matrices and spacebands is.

clamped, a justification lever by which the spacebands are expanded to justify the line, apump stop lever operable to release the pump when a; line is properly justified, a reciprocable rod spring-actuated to move the line-clamping jaws towards the line, means for selectively coupling the line-clamping jaws with the rod, supplemental rod-actuating mechanism operated by the justification lever to tighten the jaws against the line after the jaws are closed thereon, said mechanism comprising a ratchet wheel, an arm adapted to rock about the axis of the ratchet wheel: and a pawl pivoted to said arm, and an independently pivoted lever bearing against and adjustable to vary the angular position of said arm, and connections from said pawl carrying arm to the pump stop lever adapted to release the pump when the arm is moved to tighten the jaws on a the line, means for selectively coupling the lineclamping jaws with the rod, supplemental rodactuating mechanism operated by the justification lever to tighten the jaws against the line after the jaws are closed thereon, and connections from said supplemental rod-actuating mechanism to the pump stop lever adapted to release the pump simultaneously with the actuation of said supplemental rod-actuating mechanism, said connections including a yielding member permitting the rod-actuating mechanism to move for the purpose of releasing the pump when the jaw-control rod is held stationary by a properly justified line.

22. In a typographical slug casting machine, the combination of a pair of jaws between which a composed line of matrices and spacebands is clamped, a justification lever by which the spacebands are expanded to justify the line, a pump stop lever operable to release the pump when a line is properly justified, a reciprocable rod springactuated to move the line-clamping jaws towards the line, means for selectively coupling the lineclamping jaws with the rod, supplemental rodactuating mechanism operated by the justification lever to tighten the jaws against the line after the jaws are closed thereon, said mechanism comprising a ratchet wheel, an arm adapted to rock about the axis of the ratchet wheel and a pawl pivoted to said arm, and an independently pivoted lever bearing against and adjustable to vary the angular position of said arm, connections from said pawl carrying arm to the pump stop lever adapted to release the pump when the arm is moved to tighten the jaws on a properly justified line, and a yielding connection between the supplemental rod-actuating mechanism and the rod, permitting the pawl-carrying arm to move when actuated to close the jaws against a tightly justified line.

23. A combination according to claim 13, characterized by a yielding connection between the jaw controlling rod and the jaw-spreading means to prevent damage when the latter is actuated against a full line.

24. In a typographical slug casting machine, the combination with a pair of jaws between which a composed line is clamped, guides along which said jaws are movable, roller bearings for the jaws within said guides, a rod reciprocable to move the jaws along the guides towards and from each other, and means for selectively coupling the jaws with the rod.

25. In a typographical slug casting machine, the combination with a pair of jaws between which a composed line of matrices and spacebands is clamped, a spring-loaded justification lever by which the line is justified, justification devices actuated by said lever to expand the spacebands, a rod reciprocable to move said jaws towards and from each other, means for selectively coupling the jaws with the rod, means constantly tending to actuate the rod to move the jaws towards each other, a locking device normally acting to prevent such movement, means adapted to release said locking device prior to justification during each operative cycle and means adapted to counterbalance the weight of the justification devices during justification.

26. In a typographical slug casting machine, the combination of a pair of line clamping jaws, light pressure means acting constantly to move the jaws toward one another, means for selectively coupling the jaws with the jaw moving means, a locking device normally active to retain the jaws in their open line receiving position, means adapted to release said locking device during each operative cycle of the machine to permit the closing of the jaws against a line of matrices, and means for preventing the further closing of the jaws when the line is removed after casting.

27. In a typographical slug casting machine, the combination of a pair of line clamping jaws, light pressure means acting constantly to move the jaws toward one another, means for selectively coupling the jaws with the jaw moving means, a locking device normally active to retain the jaws in their open line receiving position, means .adapted to release said locking device during each operative cycle of the machine to permit the closing of the jaws against a line of matrices, means for preventing the further closing of the jaws when the line is removed aftercasting, and means for returning the jaws to line receiving position at the completion of each operative cycle.

28. In a typographical slug casting machine, the combination of a pair of line clamping jaws, light pressure means acting constantly to close the jaws against a line of matrices and spacebands positioned between them, justifying means for expanding the spacebands to justify the line, means for selectively coupling the jaws with the jaw closing means, a locking device normally active to retain the jaws in their open line receiving position, said locking device being released I by the action of the justifying means during each operative cycle of the machine to permit the closing of the jaws, and means for preventing the further closing of the jaws when the line is removed after casting.

29. In a typographical slug casting machine, the combination of a pair of line clamping jaws, light pressure means acting constantly to close the jaws against a line of matrices and spacebands positioned between them, justifying means for expanding the spacebands to justify the line, means for selectively coupling the jaws with the jaw closing means, a locking device normally active to retain the jaws in their open line receiving position, said locking device being released by the action of the justifying means 1 during each operative cycle of the machine to permit the closing of the jaws, means controlled by the justifying means for preventing the further closing of the jaws when the line is removed after casting, and means for returning the jaws to line receiving position at the completion of each operative cycle.

30. In a typographical slug casting machine, the combination of a pair of jaws between which a composed line of matrices and spacebands is clamped, a justification lever by which the spacebands are expanded to justify the line, a pump stop lever operable to release the pump when a line is properly justified, means for moving the line clamping jaws towards the line, means for selectively coupling the jaws to said jaw moving means, supplemental means operated by the justification lever to tighten the laws against the line after the jaws are closed thereon, and connections from said supplemental means to the pump stop lever adapted to release the pump simultaneously with the actuation of said supplemental means.

31. In a typographical slug casting machine,

the combination of a pair of line clamping jaws,

active locking device 'to retain the jaws in their open line receiving position adapted to be released by a periodically operated member of the machine during each operative cycle, means adapted to justify a line held between the jaws, and means actuated by the justification means adapted to spread the line clamping jaws slightly apart immediately before justification.

32. In a typographical slug casting machine, the combination of a pair of line clamping jaws, light-pressure means for closing the jaws onto a composed line of matrices and spacebands located between the jaws and to open the jaws, means adjustable for selectively coupling the jaws to the jaw closing means for quadding or centering a composed line, a normally active locking device for retaining the jaws in their open line receiving position adapted to be released by a periodically operated member of the machine during each operative: cycle, means adapted to justify a line held between the jaws, means actuated by the justification means adapted to spread the line clamping jaws slightly apart immediately before justification, and means adapted automatically to render said jaw spreading means inoperative simultaneously with the setting of the adjustable jaw coupling means for centering.

33. In a typographical slug casting machine, the combination of a pair of line: clamping jaws, light pressure means for closing the jaws onto a composed line of matrices and spacebands located between the jaws and to open the jaws, means adjustable to selectively couple the jaws to the jaw closing means for quadding or centering a composed line, a normally active locking device for the jaw closing means adapted to be released by a periodically operated member of the machine during each operative cycle, means adapted to justify a line held between the jaws, mechanism actuated by the justification means to spread the line clamping jaws slightly apart immediately before justification, a movable member for rendering said mechanism'operative or inoperative, and connections between the adjustable jaw coupling means and said member adapted to actuate the latter to render said jaw spreading mechanism inoperative when adjusting said jaw coupling means for centering.

34. In a typographical slugcasting machine, the combination of a pair of jaws between which a composed line of matrices and spacebands is clamped, a justification lever by which the spacebands are expanded to justify the line, light spring pressure means for moving the line clamping jaws towards the line, means for selectively coupling the line clamping jaws with the jaw moving means for quadding or centering a composed line, supplemental jaw moving mechanism operated by the justification lever to tighten the jaws against the line after the jaws are closed thereon, means adapted to render the supplemental jaw closing mechanism inoperative during the production of full lines when the device is set for quadding or centering, and a normally active locking device for retaining the jaws in their open line receiving position adapted to be released by a periodically operated member of the machine during each operative cycle.

35. In a typographical slug casting machine, the combination of a'pair of jaws between which a composed line of matrices and spacebands is clamped, a justification lever by which the spacebands are expanded tojustify the line, light spring actuated means for moving the line clamping jaws towards the line, means for selectively coupling the line clamping jaws with said jaw moving means, supplemental jaw closing mechanism operated by the justification lever to tighten the jaws against the line after they are closed thereon, said mechanism comprising a pawl and ratchet wheel toothed over only a part of its periphery, and means adapted to adjust the pawl to a position in which when actuated it will move idly over the untoothed part of the ratchet wheel.

36. In a slug casting machine, the combination of a pair of line clamping jaws, means for moving one of the jaws into contact with a composed line of matrices and expansible spacebands, means for expanding the spacebands to justify the line, and means actuated by the justifying means for moving said jaw outwardly a limited distance to permit the line to be expanded.

37. In a slug casting machine, the combination of a pair of line clamping jaws, one movable toward the other for quadding, means for effecting such quadding movement of the jaw to bring it into contact with a composed line of matrices and expansible spacebands, means for expanding the spacebands to justify the line, and means actuated by the justifying means for moving said jaw outwardly a limited distance to permit the line to be expanded.

38. In a slug casting machine, the combination of a pair of line clamping jaws movable equidistantly toward each other for centering, means for effecting such centering movement of the jaws to bring them into contact with a composed line of matrices and expansible spacebands, means for expanding the spacebands to justify the line,

and means actuated by the justifying means for moving said jaws outwardly equal limited dis tances to permit the line to be expanded.

39. A combination as in claim 36, including means actuated by the justifying means to clamp the jaw tightly against the justified line.

40. A combination as in claim 36, wherein the justifying means acts successively to actuate means for moving the jaw outwardly, to expand the line a corresponding extent, and to actuate means for clamping the jaw tightly against the expanded line for casting.

41. A combination as in claim 36, wherein the justifying means acts successively to actuate means for moving the jaw outwardly, to expand the line a corresponding extent, to actuate means f0 clamping the jaw tightly against the expanded line for casting, and to operate means for preventing the further inward movement of the jaw when the line is removed after casting.

42. A combination as in claim 36, wherein the jaw closing means comprises light pressure means acting constantly to move the jaws toward each other and including a normally active locking device for maintaining the jaws in their normal line receiving position and adapted tobe released by a periodically operated member of the machine during each operative cycle.

43. In a slug casting machine, the combination of a pair of line clamping jaws, means for selectively closing one or both of the jaws upon a composed line of matrices and expansible spacebands for quadding or centering, justifying means for expanding the spacebands to justify the line, means for conditioning the machine for quadding or centering, means controlled by the justifying means to effect an outward movement of the jaws from line closing position to spread the jaws for expansion of the line, and means for rendering Ariana-aw.

machine is conditioned for centering.

44. In a slug casting machine, the combination of a pair of line clamping jaws, means for moving one of said jaws inwardly from its line receiving position intocontact with a composed line of matrices and expansible spacebands for quadding, means for expanding the spacebands to justify the line, and means controlled by the justifying means and dependent upon the extent of inward movement of the jaw to permit quadding or to return the jaw to normal line receiving position to allow the line to be expanded to full length.

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