US1982033A - Typographical casting machine - Google Patents

Description

Nov. 27,1934. A. J. STOUGES 1,982,033

TYPOGRAPHICAL CASTING MACHINE Filed Sept. 24, 1932 5 Sheets-Sheet 1 A. J. STOUGES TYPOGRAPHICAL CASTING MACHINE Nov. 2?, 1934.

Filed Sept. 24, 1932 5 Sheets-Sheet 2 utn INVENTOR A TTOR/X YS Nov. 27, 1934. A. J. STOUGES 1,982,033

-' TYPOGRAPHICAL CASTING MACHINE Filed Sept. 24, 1932 5 Sheets-Sheet s [N VENTOR ml lull I; LB l f 1/: M I I ,1 H ATTORNEYS ss'roueas 119982333 TYPOGRAPHICAL CASTING MACHINE Filed Sept. 24, 195 2 5 Sheets-Sheet 4 myrr w /NZENTOR 9 M ATTOR EYS Nov. 27, 1934. A. J. STOUGES 1,982,033

TYPOGRAPHICAL CASTING MACHINE Filed Sept. 24, 1932 5 Sheets-Sheet 5 "FIE; 6

INVENTOR Patented Nov. 27, 1934 UNITED STATES PATENT orriciz TYPOGRAPHICAL CASTING MACHINE Anthony Joseph Stouges, Queens Village, N. Y.," v

assignor to Mergenthaler Linotype Company, a corporation of New York I Application September 24, 1932, Serial No. 34,646

4s clanilsL (cl. 199- 54) This invention relates to typographical casting machines, such as linotype machines of the general organization represented in U. S. Letters Patent to O. Mergenthaler No. 436,532, wherein Y 5 a melting pot is arranged to deliver molten metal into a slotted mold and up against a composed line of matrices to produce a type bar or slug bearing on its edge type characters corresponding to the intaglio characters of the matrices. In these machines, the molds (usually four in numher) are mounted in a rotatable wheel or disc in the printing faces of the slugs and, unless removed, cause corresponding imperfections in the printed matter. Such imperfections are due largely to slight irregularities or unevennessin the bottom surface of the matrix cavities or characters and, although extreme care and accuracy are observed in the course of matrix manufacture, the degree of perfection attained in punching 0r forming the characters is governed more-or less by variations in the grain of the metal used and is, therefore, very uncertain. In overcoming the above difficulty, it has heretofore been the common practice to rub the printing faces of slugs upon an emery coated block before assemblage in the printing forms. This practice, however, requires that each slug be handled and inspected separately, and is slow, tedious, and otherwise objectionable.

The present invention aims to dispense entirely with all such manual operations, and contemplates means for automatically finishing. the printing faces of the slugs while they are still in the mold. To this end, specifically, the machine is equipped with a high speed power driven rotary face cutter mounted on a fixed bracket at the front of the machine in position to act upon the printing faces of the slugs as the latter are carried by the rotation of the mold disc from casting to ejecting position. The cutter is preferably driven by an electric motor and is mounted so as to be automatically movable into and out of slug trimming position as the electric motor is started and stopped, respectively. The trimmed slugs not only present an even and level printing face, but, in addition,-a superior printing face because of the trimming operation which hardens the type characters and eliminates the porosity so common in the past.

'In the accompanying drawings, the invention is shown merely in preferred form by way of example and as applied to a commercial linotype machine, but obviously many changes and variations may be made therein and in its mode of adaptation, which will still be comprised within its spirit. It should, therefore, be understood that the invention is not limited to any specific form or embodiment, except insofar as such limitations are specified in the appended claims.

Referring to the drawings: 7()

Fig. 1 is a front elevation of a portion of a linotype machine embodying the present improvements;

Fig. 2 is a side elevation (looking from the left) of the parts shown in Fig. 1; I v

Fig. 3 is a vertical view showing the internal construction of the improved cutter unit;

Fig. 4 is a front elevation of. the cutter unit, partly in section, taken on line 44 of Fig. 3 looking in the direction of the arrows;

Fig. 5 is a top plan view of the parts shown in Fig. 1;

Fig. 6 is a top plan View, partly in section, showing the disposition of the cutter relative to the front face of the mold;

Fig. 7 is a rear elevation taken on the line 7--'7 of Fig. 3 looking in the direction of the arrows, and showing the housing in which the cutter is enclosed;

Fig. 8 is a side elevation of the cutter unit taken on the line 8- 8 of Fig. .1;

Fig. 9 is an elevational view of a section of the cutter; and

Fig. 10 is a vertical sectionthrough the cutter taken on the line 10l0 of Fig. 9.

After the composed line of matrices has been delivered to the vertically movable line transporter or first elevator and presented thereby in front of the slotted mold (such as the mold 11) carried by the rotatable wheel or mold disc A, the disc is advanced bodily from the rear to carry the aligning rib of the active mold into engaging relation with the lower projecting ears of the matrices preparatory to the justification of the line and the alignment of the matrix characters with the mold slot. At this time the front face of the mold is out of contact with the matrix line although closely spaced therefrom (about 1/64), the final lock-up or sealing of'the mold slot by the matrices being subsequently effected by the spring tension, forces the mouthpiece of the met- 'depth'mold at such time.

al pot against the back of the mold and moves the disc A and its supporting slideC, independently of their controllingmechanism, forwardly to close the small gap between the matrix line and the face of the mold.

Molten metal is then forced into themold by one or more spring actuated metal pot 'plungers, and after the slug is cast the mold slide C is retracted to carry the mold out of contact with the line and the disc A then given a three-quarter turn in an anti-clockwise direction to carry the slug from the horizontal casting to the vertical ejecting position, During such rotation of the disc A, the active mold is swept past a stationary back knife which is arranged behind the disc and adapted to trim off any burrs or surplus type metal that may adhere to the rear edge of the slug.

So .far as described, the parts, their construc, tion, and mode of operation, except as hereinafter pointed out, are ,or may be the same as those embodied in the commercial linotype machine and in themselves constitute no part of the present invention. Y I

The several molds a (usually four) are mounted on the mold disc A and secured in place by means of clamping screws a inithe well-known manner. The rear faces of all of the molds are flush with the rear face of the disc A in order that the slugs produced in each may be properly trimmed by the rear knife in the manner above mentioned. In the present instance, however, anyone or all of the molds may be made somewhat deeper than the regular molds ordinarily used to produce slugs of normal type height, thus providing a small excess of .metal on the type characters to be trimmed off in obtaining the flawless printing faces desired.

This proposed change in the form of the molds a. carried by the disc A will not affect other parts of the machine in the normal operation thereof, since the difference in height of the deeper molds is but .002" and, therefore, well within the 1/ 64 clearance space allowed between the face of the mold and the matrix line during justification and alignment. In other words, when the mold disc A is advanced for the casting operation and one of the deeper molds is in use, the front face of said mold will stand slightly closer to the matrix line than would the corresponding face of a normal Clearance will still be abundant for the required relative movement between the matrices and mold during the justifying and aligning operations. Furthermore, the slight difference in the extent of forward movement of the disc A due to the difference in depth of themolds, and which is limited by the-'matrix line, is compensated for by the resiliency of the pot spring when the mouth of the pot is pushed against the back of the mold.

As a result of the increased depth of the molds, the front faces of the type characters on the slugs cast therein will be disposed slightly forward of the faces of type characters on the slugs cast in the normal depth or standard type high molds when the mold disc A is backed away from the matrix line preparatory to its rotation to carry the slug from casting to ejecting position. Consequently, in casting the slugs in either, a regular or a deep mold the regular linotype matrices may be used, notwithstanding the fact that the intaglio cavities or characters of said matrices, irrespective of body size or font, are of uniform depth.

As before stated, the present invention provides means for dressing down or trimming the printing faces of the cast slugs, said means in the embodiment illustrated consisting of a rotary cutter unit B mounted on a suitable bracket (see Figs. 1 and 2) and arranged directly opposite the rear trimming knife, the latter being located as usual on the lateral arm or extension C of the mold slide C. The bracket just referred to is secured by a pair of screw bolts 21 to the extension C and ing. WithinIthehousingB there is located a loosely fitted sleeve B which inturn houses a rotatable spindle B with its three supporting ball bearings. At its rear end, the spindle B7 is provided with a detachable 'face cutter B and adjacent its forward end (between the main portion of the housing B and the upturned bear- 7 ing portion B it is equipped with a pulley wheel B over which is passed an endless belt D running from a pulley'D of an electric motor D As a convenientform of detachable mounting for the cutter B it is formed with a' central threaded opening 13 which can be screwed onto the rearthreaded end B of the spindle B the threads preferably extending in a direction opposite to the rotation of the cutter. In order to tighten the cutter B on the spindle B, the former is provided with a number of recesses B into which prongs of a specially constructed wrench may be fitted. As will be notedin Figs. 9 and 10, cutting teeth B are disposed radially on the periphery of the cutter, being flush with the forward face 13 of the cutter and extending beyond the rear face B thereof. At the rear, the projecting teeth B are formed with bevelled cutting edges B these edges being inclined in a radial direction with reference to the plane of the cutter disc, for a reason hereinafter pointed out.

i The cutter spindle B", which tapers from rear to front, is provided near its rear end with a double row ball bearing B (of the combined radial and thrust variety) about midway of its length with a single row radial ball bearing B and near its forward end with another single row radial ball bearing 13 all of which ball bearings are fitted over the spindle from front to rear in proper order and forced onto their respective seats b b and 12 The'spindle B is held in place within the sleeveB by end plates B and B detachably secured to the sleeve 3, as by screws B both end plates having inwardly projecting flanges B which bear against the outer side faces of the contiguous ball bearings. The double row bearing B is held in position by a wide cylindrical thrust washer B abutting at one end against the inner face of the bearing B and at the other end against an annular flange 13 formed on the inner wall of the sleeve B The bearing B is maintained in its position by a spacing bushing 13 closely surrounding the spindle B and spanning the space between the bearings 13 and B Also located between these two bearings is a cylindrical felt gasket B2 forming a lubrication chamber,

which incidentally is. sealed at the opposite ends of the sleeve B by ring gaskets 12 and b cooperating with the endplates 13 and B The third bearing B is located in the upturned-endpiece B beingclamped against the hub of the pulley wheel B by a nut B screwed on the threaded end B of the spindle B As thus mounted the cutter spindle B", aside from being easily assembled, is firmly supported against side or end play, is well lubricated, and yet has itsbearings completely protected against the entrance of metal chips or other foreign substances.

After the sleeve B with its contained parts has been placed within the housing B (as canbe done by entering it from the rear),- it'isheld in place therein by a sturdy stud B, the inner endof which engages in a groove or keyway B '(see Fig. 5) spirally formed in'theouter wall of: the sleeve B As best shown in Fig; 4, the sleeve B is formed near its forward end with a number of threaded recesses B, into any one of which may be screwed the threaded end of a stud D which carries an operating knob or handle D The stud D is arranged in an elongated slot B c'ut'through the upper wall of the housing B -and hence is capable of turning the sleeve B (and therefore the whole cutter unit) relatively to the fixed stud B causing the latter by virtue of its engagement in the spiral groove B to move the cutter unit rearwardly and forwardly into or out of operative position, respectively. In order to maintain the cutter in its operative position, there is provided a thumb screw D passing through a threaded 1 recess in a raised boss B of the housing B and adapted to be set up so that its inner end engages with the stud D The set screw D is angularly disposed within the boss B as shown in the drawings, so that when set up into engagement with the stud D it will tend to force the latter to the right, thus insuring both the. full movement of the cutter into operative position and its maintenance in said position.

The electric motor D is supported on a bracket D rigidly secured to the main frame E, as by screw bolts D see Fig; 2. The operation of the motor D is controlled by an electric switch D mounted on a bracket D suspended'from the bracket B before mentioned, as by a bolt D', and the switch-D is operated by a link D pivoted at its upper end to a collar D .rotatably mounted on a reduced portion of the stud D above mentioned. As a result of this arrangement, when the stud D is shifted'to the right (as in Fig. 4) to move the cutter unitrearwardly into operative position, it will turn on the switch D to start the operation of the motor D whereas when the stud is shifted to the left to move the cutter unit forwardly into inoperative position, it will turn the switch off to stop the operation of the motor. There is further provided by this arrangement a safeguard against carelessly moving the cutter into operative position and failing to put it in operation, which would be possible if two separate acts were required for moving the cutter rearwardly and for operating the switch D to start the motor D to operate the machine to deliver a slug to the cutter for trimming without the latter being .in operation would render the slug useless and would injure the cutter.

In order to support and guide the mold disc A in its rotation, the supporting bracket" B is provided with a front guide or wear shoe'F and a rear guide or Wear shoe F, the formerbeing preferably formed integral with the bracket B (see Fig. 8) The rear shoe F, which is T-shaped as-illustrated, is "formed in its body portion with a slot" 7 "through which a clamping screw 7 is adapted to pass and banks against a pair of set screws I and i passing through the brack- 'et B" and having their forward ends abutting against cross arms of the shoe. By first'loosening and later tightening the clamping screw j, the guide shoe F" may be adjusted by altering the setting'of the screws 7 and i so as to obtain the desired evenness of pressure of the shoe against the-mold disc. r

At its'rear end; the housing B is provided with a guard in the form of a rearwardly projecting-hood or flange 8 (seeFigs. 3 and '7). This guardfiange practically surrounds the cutter B but instead of being of completely circular form; it is fashioned to form'a throat .3 leading from the cutter B to a delivery chute 3-5 (see Figs. 1 and 8) which is adaptedto be attached to the housing as by bolts passing through holes B Thus, the chips and shavings removed from the slugs by the cutter B are confined by the guard B and'carried off to a suitable collecting receptacle by the chute B rather than being allowed to fall freely to the floor or to be thrown oifinto the working parts of the machine by the rapidly rotating cutter B Besides, the guard in conjunction with thehousing and mold disc forms an enclosing chamber for the rotary cutter as a means of protection to the operator.

Further to prevent the trimmings from flying upwardly and to keep'the front'face of the mold clean, a brush B (Fig. 6) is provided having a backing B by means of which it issecured, as

by bolts B to a flange B formed integrally with the top of the guard 3 The brush B is formed withyieldable bristles and in practice the wiping ends of the bristles are cut to coincide with the particular configuration of the front face-of'the mold, as indicated at B in Fig. 6.

Having described the parts and construction of the cutter unit B, there remainsto be considered its particular mounting and adjusting means. At the bottom of the housing B there is provided a recess B having a screw threaded inner portion'B fiand a counterbored outer portion B in which there is adapted to be secured a stud-B such as that illustrated in Fig. 3. The stud 13 is adapted to fit rotatably in a recess B formed in the bracket member B thethre'aded portion B" of the stud projecting through the bracket and adapted to receive a nut B as shown. A similar stud connection B (see Figs. 1, 2, 4 and 5) is provided at the side of the cutter .unit 13, this connection, however,

a recess formed in the bracket member B and 'havinga nut screwed on its projecting threaded end. These .two stud connections B and B provide two pivotal mountings for the cutter unit B, which, when the nuts are loosened, permit the unit to be rocked in horizontal and vertical planes.

. In conjunction with the two pivotal mountings just described, there are provided two pairs of set screws B and B. In adjusting the cutter unit B, the nut B and the corresponding nut of the stud connection B are loosened. By

tightening one and loosening the other of the adjusting screws B the cutter unit may be unit is adjusted so that the rotary cutter B is 4 rocked in a vertical planeqaboutthe pivotedconnection B 2, either up or down, depending upon which of the adjusting screws is set up and which is unscrewed. 13y changing the setting of the screws B 4, the unit may be rocked in like 'manner in a horizontal plane about the studB. Theseadjustments permit the proper alignment of. the cutter B with the front face of the mold, and whensuch alignment has been established the nut; B l and that of the stud connection B are again tightened to maintain the cutter unit inits adjusted position Of course, these adjustments may be made separately; i. e.,

if "only a horizontal adjustment is required, the I nut Bi aloneyis loosened and the setting :of the screws 13" changed, or if ;only the vertical adjustment is to be altered, the nut on the connection B alone is-loosened andv the setting of the screws B changed.

It may,v be noted at this time'that the,- cutter angularly disposed with relation to the front face of the mold, (or the printing face of the slug carried by the mold and which is to be trimmed by the cutter),.so that the teeth 13 of the cutter will engage theface of the slug only when they are at'the top of the cutter during its rotation. This iswell illustratedin Fig. 3, where it will be observed that the upper teeth at the point-X arein position-to act upon the printing characters formed on the slugywhereas the lower teeth at the, point Ygare'spaced some distance from the characters. The angular disposition of the cutter with respect to the printing face of the slugis desirable to eliminate the drag which would result from engagement of the teethat more than onepoint with. the, printing face of the. slug as the latter is carried through the zone defined by the rotary cutter. And it is because of thisdesired angular disposition of the .cutterB thatthe teeth B thereof are formed with'their radially be parallel to the face of the slug and hence engage therewith throughout their radial extent.

- 'As before stated, the sleeve B is provided with a number of screwthreaded recesses B into any one of. which the threaded end .of the stud D of the handleD is adapted to be screwed, whereby a connection between the'sleeve B and the electric switchD is made for the purposes already indicated. By providing a number of recesses B the initial operative (and incidentally inoperative) position of the cutter may be varied to suit different conditions, as for example when casting slugs ofdifferent height. This is. a very rough adjustment, however, since it is to be borne in'mind that only .002" of metal or so is removed from the face of the slug, so that to effect a fine adjustment of the cutter, there isprovided a micrometer screw B passing through .a threaded recess inthe boss B ofthehousing B and having its inner end in engagement withthe stud D The head B of the screw B is calibrated and a pointer B secured to the boss B is provided to facilitate the reading of thecalibrations in determining the amount of change in the position of the-cutter effected by a change in the setting of the adjusting screw B Further, this micrometer adjustment enables the setting of the cutter in proper operative position as the teeth become worn from use. and. from being ground handle -D tothe right (in Fig. 1).

away in sharpening. By-screwing up or unscr'ewdescribed. With the cutter unit-B properly ad- .justed so, that the cutter B is-angularly disposed with respect to the front face of the mold, theyelectric motor D is started .by moving the This movement of the handle D not only turns on the switch D to start the motor D but at the same time rotates the sleeve B which, because of the stud B'- riding in the'spiral keyway 3, moves the entire cutter unit rearwardly to locate the cutter B l in operative position, it being maintained in this position by setting up the thumb screw D into engagement with the stud D After the slug is cast, the mold disc A makes a threequarter rotation to carry the slug into ejecting position, and during the first part of this rotation of the molddisc, the slug'is carried past the cutter B Because the normal rotation of the disc A is so rapid, only a fraction of a second is allowed for the slug trimming-operation, and for this reason a very high speed motor is employed to rotate the cutter B rapidly enough properly to dress the slug and produce a well finished printing surface. Moreover, it has been found that by the employment of a face cutter, which cuts cross- "wise of the slug or transversely of the longitudinal axis ofthe slug, an exceptionally smooth finish may be obtained.

The cutter could of course be constantly driven and installed in a permanent operative position, as when used solely for trimming large slugs for head letter and display work. However, the pres-.

ent device. is also intended for application to the regular linotype machineto be used for trimming slugs of any size, so that it is a distinct advantage to be able to render-the device operative or inoperative .at will, and a further advantage of course to have the cutter at rest when not in use.

While the invention has herein been disclosed as applied to machines for producing printing slugs of standard type height, it will be understood that it is equallyapplicable to machines for producing printing slugs of less than standard type height, as, for example, .low slugs which T when in use are supported upon blocks or fillers which'positi'on'them at type height. The invention aims to cast slugs (whatever their kind) of slightly moreithan a given height so that when the printing faces are trimmed or dressed down the finished slugwill be of the required height.

This latterstatement does not means that the 'the thickness of metal removed by the cutter.

Having thus described my invention, what I claim is: I I

1. In a typographical casting machine, the combination of a slug casting mold, and a power driven rotary cutter for-automatically trimming the printing faces of slugs cast in said mold.

2. In. a. typographical casting machine, the

combination of a slug casting mold movable from casting to ejecting position, and a power driven rotary cutter arranged to act upon the printing faces of slugs cast in said mold as the latter moves from casting to ejecting position.

3. In a typographical casting machine, the combination of a slug casting mold, and a power driven rotary face cutter for automatically trimming the printing faces of slugs cast in said mold.

4. In a typographical casting machine, the combination of a slug casting mold, and a power driven rotary face cutter for automatically trimming the printing faces of slugs cast in said mold, said cutter being so disposed that its cutting teeth will act upon the slugs at one point only in the periphery of the cutter.

5. In a typographical casting machine, the combination of a slug casting mold, and a power driven rotary face cutter for automatically. trimming the printing faces of slugs cast in said mold, said cutter rotating in a plane inclined with respect to the front face of the mold, but having its cutting teeth when active disposed parallel to said mold face, for the purpose described.

6. In a typographical casting machine, the combination of a slug casting mold movable from casting to ejecting position, and a power driven rotary cutter arranged to act upon the printing faces of slugs cast in said mold as the latter moves from casting to ejecting position, said cutter being adjustable toward and away from the mold to vary its effective slug trimming position.

7. In a typographical casting machine, the

combination of a slug casting mold, a power driven rotary cutter arranged to act upon the printing faces of slugs cast in the mold, means for moving said cutter into operative position, and means for maintaining said cutter in operative position.

8. In a typographical casting machine, the combination of a slug casting mold movable from casting to ejecting position, and a power driven rotary cutter arranged to act upon the printing faces of slugs cast in said mold as the latter moves from casting to ejecting position, said outter being movable at will into and out of slug trimming position.

9. In a typographical casting machine, the combination of a slug casting mold movable from casting to ejecting position, and a power driven rotary cutter arranged to act upon the printing faces of slugs cast in said mold as the latter moves from casting to ejecting position, said outter being adjustable toward and away from the mold to vary its effective slug trimming position and being movable at will'into and out of said slug trimming position.

10. In a typographical casting machine, the combination of a slug casting mold movable from casting to ejecting position, and a power driven rotary cutter arranged to act upon the printing faces of slugs cast in said mold as the latter moves from casting to ejecting position, and means providing a chamber in which the rotary cutter'is enclosed.

11. In a typographical casting machine, the combinationof a slug casting mold movable from casting to ejecting position, a power driven rotary cutter arranged to act upon the printing faces of slugs cast in said mold as the latter moves from casting to ejecting position, means providing a chamber in which the rotary cutter is-enclosed, and a chute leading from the enclosing chamber to carry off the slug trimmings as they are trapped by the chamber.

12. In a typographical casting machine, the combination of a slug casting mold, a periodically rotatable disc carrying said mold, a rotary dressing device arranged to act'upon the printing faces of slugs cast in said mold during the normal rotation of the disc, means for actuating the dressing device, and common means for inaugurating the actuation of the dressing device and moving the same into operative position.

13. In a typographical casting machine, the combination of a slug casting mold,,a periodically rotatable disc carrying saidimold, a rotary dressing device arranged to act uponthe printing faces of slugs cast in said mold during, the normal rotation of the disc, means for actuating the dressing device, and common means for stopping the actuation of the dressing. device and moving the same to inoperative position.

14. In a typographical casting machine, the combination of a slug castingmold, aperiodically rotatable disc carrying said mold, a cutter arranged to trim the printing faces of slugs cast in said mold during the normal rotation'of the disc, and means for movin'gsaid cutter into and out of operative position.

15. In a typographical'casting machine, the combination of a slug casting mold, a periodically rotatable disc carrying said mold, a rotary cutter arranged to trim theprinting faces of slugs cast in said mold during the normal rotation of the disc, means for actuating the cutter, and means for moving the cutter into and out of'operative position.

16. In a typographical casting machine, the combination of a slug casting mold, a periodically rotatable disc carrying said mold, a rotary dressing device arranged to act .uponthe'printing facesof slugs cast in said mold during the normal rotation of the. disc, meansfor rotating said dressing device, means for rendering said'rotating means inoperative, and'means for automatically moving said dressing device out of operative position when its rotating means is rendered inoperative.

17. In a typographical casting. ma.chine,'the combination of a slug casting mold, a periodically rotatable disc carrying said mold, a rotary dressing device arranged to act upon the printing faces of slugs cast in said mold during the normal rotation of the disc, means for rotating said dressing device, means for rendering said rotating means operative, and means for automatically moving said dressing device into operative position when its rotating; means is rendered operative. l i

' 18. Ina typographicalcasting machine, the combination of a slug castingmold, aperiodically rotatable disc'carrying said mold, a rotary dressing device arranged to act upon the printing faces of slugs cast in said mold during the normal rotation of the disc, means for rotating said dressing device, means for rendering said rotating means operative and inoperative, and means for automatically moving said dressing device into and out of operative position'as its rotating means is rendered operative and inoperative, respectively. l

19. In a typographical casting machine, the combination of a slug. casting mold, a periodically rotatable disc carrying said mold, a rotatable dressing device arranged to act-.upon'the printing faces of slugs cast in said mold during the normal-rotation of the disc, an electric motor for rotating said dressing device, a switch for turning the motor on and off, and common means for operating the switch and for moving the dressing device into and out of slug dressing position. 20. A combination as set forth in claim 3, characterized by, the fact that the cutter is slidably supported at the front/of the mold disc for fore -and-aft movement, whereby it may be moved into and out of slug trimming'position. 21. A combination as set forth in claim 3, including means providing for vertical and horizontal adjustment of the cutter to align the same with the face of the mold.

v22. .A combination as set forth in claim 3, including means providing for a fore-and-aft adjustm'ent of the cutter, whereby its slug trimming position may be varied as required. 23. A combination as set forth in claim 3,

characterized by the fact that the rotary cutter is provided with'radially disposed cutting teeth, the cutting edges of whichare radially inclined, and the cutter is adapted to beangularly disposed with relation to the front face of the mold.

24. A combination asset forth in claim 2, including means for catching the slug trimmings produced by'the cutt 25. A combination as set forth in claim 2, including a guard surrounding the cutter and to the lower end of which is attached a chute for carrying off the slugtrinnnings.

26. A combination as set forth in claim 2, including means for removingslugtrimmings produced by the cutter from the face of the mold.

'27. A combination asset forth in claim 2, in-

' eluding a wiper of flexible material overlying the 'in either direction cutter and adapted to contact the front face of the mold, whereby slug trimmings produced by the cutter areprevented from flying upwardly and trimmings which cling to the front face of the mold are'removed.

- 28.'In a typographical casting machine, the combination of a slug casting mold, a rotatable disc wherein the mold is mounted, a back knife for trimming the bases of slugs cast in the mold, a rotary knifefor trimming the printing faces of said slugs, and guide means common to both knives'for restraining the disc against facewise displacement in either direction during the slug trimming operations.

"29."In a typographical casting machine, the combination of a slug casting mold, a rotatable disc wherein the mold is mounted, a back knife 'fortrimming'the bases of slugs cast in the mold,

a rotary cutter for trimming the printingfaces of saidsluga'and front and rear wear shoes for restraining the disc against facewise displacement in either direction during the slug trimming operations, at least one of said wear shoes being adiustabletdeven' up the pressure on the mold disc. I s 30. In a typographical casting machine, the

5 combination of a slug casting mold, adi'sc carry- 32. 'A combination as in claim 30, including front and rear wear shoes for restraining the disc against facewise displacement in either direction during theslug trimming operations, the

front wear shoe being formed integrally with the man e cutter supporting'bracket and the rear wear-shoe being adjustably mounted onsaid-"bracket. I

33. In or for a slug casting machine, the combination of a slug casting mold, a disc carrying said mold, a slide on which the mold disc is rotatably mounted, a rotary dressing device for acting upon the printing faces of slugs cast in said mold, and a bracket whereon the rotary dressing device is mounted, said bracket being formed in two sections, one of which sections is .fixedly attached to the mold disc slide, and the otherof said sections being adjustably secured'to said fixed section.

34. In or for a slug casting machine, a dressing unit for finishing the printing faces of slugs, said unit including a housing, a sleeve mounted in said housing, a spindle supported in the sleeve; a rotary dressing device secured to one end of said spindle, and a driving pulley secured to'the opposite end of said spindle,1said spindle being mounted in ball bearings'to prevent side and end play and to eliminate chatteringduring rotation of the spindle. I

' 35. A slug dressing unit as set forth in claim 34, wherein the housing is rigidly supported by a fixed bracket and the sleeve ;is movable within the housing to effect a fore-and-aft movement of the spindle, whereby the dressing device may be moved toward or away from the front face of the mold. I I

36. A slug dressing unit as'setforth in claim 34, wherein the housing is pivotally mounted on; a fixed bracket, whereby the entire dressing device unit may be rocked vertically or horizontally to align the dressing device with the'face of the mold. I I 37. A slugdressing unit as set forth in claim 34', wherein, means is provided for effecting a fore and-aft adjustment of the sleeve within the hous-r ing to obtain the proper initial setting of the dressing device in operative position. I j 38. A slug dressing unit as set forth in claim 34, wherein means is provided for obtaining a roughinitial fore-and-aft' adjustment of the sleeve ion iis

withinthe housing, and other means is provided for obtaining a finer adjustment of the sleeve.

39. In' a typographical casting machine, the

combination of a slug casting mold, a periodically rotatable disc carrying said mold,anda rotary face cutter arranged to'trimthe printing faces of slugs cast in said mold during the normal 5 rotation of thedisc, said cutter beingydisposed to cut crosswise of the slugs. I I I 40. In a line casting machine, the combination of a mold carrying member, and a cooperative rotary power-driven finishing device mounted to act upon the type face of a slug in a mold carried by said member.

' 41. In a line casting machine, the combination of a -mold carrying memberQand a cooperative rotary power-driven finishing device to act upon the type face of a slug in a mold carriedby said member, said member and device being relatively jmovable to cause the finishing device to "traverse the length of the type face of the slug. I I I 42. In a line casting machine, the. combination of a'movable member carrying atype slug casting mold, and a rotary power-driven dressing device mounted to acton the type face of a slug in the mold during the movement of said member. I, 43. In a line casting machine, the combination of "a rotatable mold wheelcarrying'a type slug castingmold, and a rotary power-driven dressing device located opposite to the face of themold wheel to act on the type face of a slug in the mold during rotation of the mold wheel.

44. In a typographical casting machine, the combination of means for casting printing slugs of slightly greater than a given height, and automatic rotary power-driven means for dressing the printing faces of the cast slugs to remove irregu larities or high spots in the type characters and to reduce them to the given height.

45. In a line casting machine, the combination of a rotatable mold wheel carrying a type slug casting mold, a dressing device located opposite to the face of the mold wheel to act on the type face of a slug in the mold during rotation of the mold wheel, and means for rendering said device inoperative 46. In a line casting machine, the combination of a rotatable mold wheel carrying a type slug casting mold, a dressing device mounted relatively to the mold wheel to act on the type face of a slug in the mold during rotation of the mold wheel,

means for normally holding said device in operative position, and means for rendering said device inoperative.

47. In a line casting machine, the combination of a rotatable mold wheel carrying a type slug casting mold, a rotary power-driven dressing device located opposite to the face of the mold wheel to act on the type face of a slug in the mold during rotation of the mold wheel, and means for render

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