US2189098A

US2189098A - Matrix-setting and type linecasting machine

Info

Publication number: US2189098A
Application number: US275736A
Authority: US
Inventors: Bendorff Kurt; Bieber Otto; Dahnert Kurt
Original assignee: FIRM TYPOGRAPH GmbH
Current assignee: FIRM TYPOGRAPH GmbH
Priority date: 1938-09-25
Filing date: 1939-05-25
Publication date: 1940-02-06
Anticipated expiration: 1957-02-06
Also published as: DE685487C; GB525742A; DK58624C; NL52309C; CH209359A; FR851138A

Description

Feb. 6, 1940. BENDORFF ET AL 2,189,098

MATRIX SETTING AND TYPE-LINE-CASTING MACHINE Filed May 25, 1939 2 Sheets-Sheet 1 //7 vemors 6, 1940- K. BENDORFF ET AL 2,139,098

MATRIX SETTING AND TYPE-LINE-CASTING MACHINE Filed May 25, 1959 2 Sheets-Sheet 2 in veniors Patented Feb. 6, 1940 g i I 2,189,098

2,189,098 MATRIX-SETTING AND TYPE LINE- CASTING MACHINE Kurt Bendorff, Berlin, Otto Eieber, Berlin-Lich- I I terfelde, and Kurt Dahnert," Berlin-Garow, Germany, assignors to the firm TypographG. m. b.

H., Berlin, Germany Application May 25, 1939, Serial No. 275,736

In Germany September 24, 1938 8 Claims. A, (01. 199-444) g The invention relates to an improved process for the production of completely cast type-line bodies for matrix-composing and type-line casting machines and the arrangements for Carrying out this process. Thetype-lines produced by the so-called complete casting process, that is to say, the finished casting process, are distinguished by the fact that they leave the casting -mould as completely finished bodies, and after the casting no further mechanical treatment'of the surfaces thereof is required with the exception of a small trimming at the edges of the faces, which does not affect-the bottom and side The base of the surfaces of thetype-line bodies. type-line bodies is formed by a ledge extending along the side surface and two transverse feet situated at the ends of the lines, while the runher, that is to say, the breakingpoint remaining 'after the removal ofthe casting head or the waste in the type-line body, is sunk with respect to the base of the type-line and therefore does not detrimentally affect the stability of the type- ".line-body. This form of type-line base is obtained by means of a casting slot, shortened at :its ends by an amount equal to the length of the transverse feet withrespect to the length of the type-line, within the so-called intermediate plate ,provided in known manner between the mould and the casting mouth of the casting pot. This known successful complete'casting process has,

a however, disadvantageous influenceslin thatthe stream of metal entering the mould does not reach the ends of the lines in the mould, in

which eddies, air' bubbles and therefore pipings or porous points are readily formed within the =type-linebodies. Apart from this, the aforesaid known method of producing completely cast 'type-lines is oneiof the principal reasons for which it has hitherto been impossible to develop 1 a simple casting mould which ensures the com plete casting and may be similarly employed for all line lengths. The many ,methods by which it has been endeavored to "achieve this object with very complicated mould constructions have been unsuccessfuland could not be adopted in practice because of theunsatisfac tory results al-'v ways obtained. The hithertdusual process has therefore been retained, byswhich each casting mould can only be made adjustable within the small, range determined by the length of the feet at the ends of the lines. This adjustability is, as is known, obtained by. employing the socalled end members or inserted members limiting the length of'the lines, that is tosay, at' the expense of the end .feet'of the lines, which are thus variable from a maximum length to a minimum length. The casting of the lines is most favorable when the end feet have reached their minimum length, so that'the length of the: line and the casting slot in the intermediate plate only differ slightly from one another.

The aforesaid disadvantages of this hitherto usual complete casting .process' are overcome by means of the process according to this. invention,

by means of which it is possible to so produce completely cast type-linebodies thatone and the same casting mould of any desiredadjustability of length and corresponding adjustability of body size may be employed without the quality of thecast type-line body orthe completely cast property or stability thereof being detrimentally affected. This object is achieved owing to the factthat the intermediate plate does not, as

hitherto, cause the formation of the transverse feet of the type-lines owing to the arrangement of its casting slot shortened at the ends with respect to the length of the lines, but according to the invention this object is achieved by the waste-ejecting device or a waste ejector suitably constructed and arranged for this purpose, which co-operates with the casting mould and the intermediate plate and is controlled thereby during their opposite displacement. The plate-like waste ejector hitherto employed, which penetrates from the side ofthe mould intothe cast- I ing slot of the intermediate plate after the s'eparation of the type-line body, cannot be employed for the purpose which'it is desired to achieve according to the invention, particularly as the known waste ejector has the disadvantage that it is very readiiy'jammed, warped, damaged (or destroyed, While it not infrequently itself causes damage to the castingslot of the intermediate plate andmay easily lead to considerable disturbances as a result of splashing of lead or negligence. All these disadvantages are overcome by thewaste-ejecting device according to the invention, which is now employed also for the production of the transverse feet of the lines for the purpose of carrying out the complete casting process and consequently operates in ac cordance with an improved principle. The actual .waste ejector is to a certain extent so arranged in the intermediate plate as a part thereof that it presses with an inclined surface moving perpendicularly with respect to the casting slot against a corresponding inclined surface of the wedge-shaped line waste by which it;is surrounded and thus forces this waste outof the casting slot without itself entering the slot in a direction opposite the casting direotionas' has in the case of short lines.

hitherto been the case.

It is thus possible for the first time by the arrangement according tothe invention, in spite of the fact that the complete casting is the same for all lines, to retain in a simple manner the unlimited adjustability of thecasting mould both in the direction of the length of the lines and to a sufficient extent with regard to the body thickness without'the mould itself orthe inter-- mediate plate, which is now the same for all sizes, having to be exchanged with the waste ejectors.

over the entire line length one or more, for example preferably two, ejectors which engage the waste and ensure the reliable regular ejection thereof from the intermediate plate. In this way, two full transverse feet are consequently simultaneously formed with long lines, while in the case of short linesonly one such complete transverse foot is formed, which isv situated in the neighborhood of the center of the line if the waste ejector is suitably arranged. The stability and evenv the completely cast property which renders unnecessary any further treatment of the type-line-bodies are not detrimentally affected in this way. Thepresence of only one foot in the caseofshort lines is, on the contrary, advantageous with regard to the casting operation and consequently with regard to the product, thereof, that is to say the type-line body,

since a more favorable ratio of the length of the effective casting slot in the vintermediate plate through which type metal fiows, to the length of the'line and the length of the casting slot of the casting mould is then obtained than would be the case if two transverse feet were also present advantage of the process resides in that in-each case, in spite of the complete, casting, the line ends are also completely cast, so that no dead corners filled with compressed air andtending to produce eddying and piping are formed at the ends. I

A construction of the inventionlis shown diagrammatically in the, accompanying drawings,

' in which:

2 Figure 1 is a view of the wasteejecting device in the direction of the intermediate plate,

Figure 2 is a plan view of the deviceshown in Figure 1,

Figure 3 is a section on the line llI- -lltof Figure 1, showing the parts in the casting position, that is to say, before the commencementof the separation of the line waste,

Figure 4 is a similarsection to that ,of Figure .3, but vshowing the parts in the position corresponding to the line-ejecting operation after the ejection of the waste,

Figure 5 is a section on the line V- -V of ure 1, showing the parts in the casting position shown in Figure 3 before the separation of the line waste, 7 I

Figure 6 is a viewcf the intermediate plate from the side of the casting mould,

Figure 7 is a perspective illustration of a waste, ejector removed from the intermediate plate, on

' according to the invention.

and a carries at its upper endmthe line-casting It is then possible without departing from the scope of the invention to distributethe plate 9, being in engagement with the drivis, in the usual way, soarranged that, aftersthe displacement of the intermediate plate 9 into its f A further particular mould consisting substantially of the two

jaws

3 and 4, the lower jaw 3 of the mould being secured, for example, by means of screws 5 to the holder I, while the upper jaw is firmly connected in known manner by screws 8 to the lower jaw 3 after the interposition of line end -members or inserted members not shown, at such a distance as to form the mould slot 6 for the metal flowing in and formingthe type-line body l after solidification, Bearing-tightly against the

mould

3, 4 and adapted to be displaced to a limitedextent with respect thereto is the so-called intermediate plate 9, which may be gu'idedin angle members I0 firmly screwed laterally to the

mould

3, 4. The intermediate plate 9 is so constructed in known manner that, as may also be seen from 1 Figure 5, its upper part, which is connected to, the upperjaw l of the mould, is elevated in the direction of the mould with respect to the part connected to the lower jaw 3 of the mould, in order thusto form the ledge I2 (see Figure 8) characteristic of the complete casting on the base of the type-line body, 1 during the shearing ofi of the line waste It by the upward displacement of the intermediate plate 9 in the direction of the

arrows A inFi'gures

3 and 5. t

In the 7 intermediate plate 9 are provided the known three recesses I3, l4 and IS, the lowerrecess l3, which does not extend completely through the center longitudinal slot l4 extending-through:

the intermediate plate 9 over the entirelength of the mould slot 6 with an equal width thereto upper end position which inrknown manner is reached after. the complete return of the mould If :10

holder l in the direction of the arrow B in Figure 3, lies in a completely coincident position with the-mould slot 6, in order thus to permit the penetration of the line: ejector not shown herethrough the slot If} in theplate 9 into the .slot 6 of the

mould

3, 4 for the purpose of eject}- 2 I ing the type-line body 1 which has solidified thereing slot 5 of the mould 3;, 4 only, forms a narrow aperture, while the side communicating with the;casting pot is wider (see Figure 5) inorder to facilitate ejectionv of the waste piece ll sheared oil" from the type-line body! in this dimotion. The casting slot I5 of the intermediate plate 9, however, is not, as previously, shortened v at the endsv with respect tothecastingslot 6 of I the mould 3, i, but it permits over. the entire length of thelineand in particular at theline;

ends,..a substantially rectilinear and eddy-free injection-of the moltencasting metal. In; oneor. more, preferably two, guide grooves Ififacingtowards the mould in the intermediate plate 9,

which startifrom thelower edge- 0f the said plate do not extend ,overthecentire height thereof,- the actual line ejectors I! are guidedhs'o as .to' be displaced to aJlimited/extent, as may be seen *from' Figures 1,3; 4- andd. These. line ejectors l1 constitute. prismatic bodies,-as shown" in Fig-{ ure 7, each having. av wedge-shaped recess. l8 as shown in Figures 3, 4 andfl. The arrangement is such that when the parts are in the position corresponding .to the casting operation, as shown in Figures 1 and..3,= the wedgershapedrecesses "1o upper surface of the ledge I2 of the line base.

Consequently, if two-waste ejectors H are emll of the waste ejectors I! are situated exactly in front of the casting slot I5" of the-intermediate plate 9. That surface of each ejector I'I, which in this position lies opposite the casting slot I5 or the recess I8 and covers themould slot 6, is so fashioned that there is formed over the width thereof a complete transverse foot I9 also extending over the entire thicknessof the typeline body I, the upper-surface of'the said transverse foot'lying completely'in a plane with the ployed over the length of-th'e line, the completely I cast foot of a line I shown-in Figure 8 is obtained. The waste ejector I'I extends with a up the position shown in Figure 3;

The arrangement is such that when'the inter mediate plate 9, is displaced in the direction of the arrow A in'Fig'ures 3 and 5, the waste ejector I1 also moves a short distance inthe same direction together with the intermediate plate 9 until the projections 20 thereof strike against the upper closed ends of the recesses 2| inside the mould jaw 4, so that from this instant the waste ejectors'II cannot follow any further displace- .-inent of the intermediate'plate 9 with respect to the mould 3, (I. 1

after the casting operation, the intermediate plate 9 being shifted in known manner in the direction of the arrowsA in Figures 3 and 5 with respect to the

mould

3, 4, the waste ejectors I! cast in the waste I I also move at firstthat is to say, while the intermediate plate 9 is shearing off the entire waste piece II from thetype-line body in the direction 'of the arrows Ain the same direction. The projections 20 thereof thus move from the position shown in Figure 3 inside the recess 2I of the mould jaw 4 until they have reached the position shown in Figure 4 and bear against the upper closed ends of the recesses 2I.' At this instant, however, the waste I I is already completely separated from the type-line body] and is situated above the mould slot 6,

while the intermediate plate 9 has not yet reached its upper end position. The line-ejecting slot I4 of the intermediate plate consequently is not yet in a coincident position with the mould slot 6. The slot I4 reaches the said coincident position with the slot 6 after the further movement of the intermediate plate 9 in the direction of I the. arrow A when it has reached its: upper end walls and force somewhat out of the conical casting'slot I5. In order thatthe waste piece'I'I separated from the type-line body and forced somewhat outwards through the wedge-shaped recesses I8 in the waste ejectors II. may readily ,5

fall out of the casting slot' I5 upon the further movement of the intermediate plate 9 and may not be firmly clamped laterally against the waste ejectors I I owing-to the shrinkage occurring during the cooling, these waste ejectors are tapered, 10 for ex'ample by means of recesses or chamfers 22 provided immediately above their wedgeshaped recesses I8 on the edge facingtowards the casting pot, as is clearlyv shown in Figure-'7. Therefore, as soon as the'waste piece It separated from the type-line body I moves upwards into the range of the aforesaid tapers or chamfers 22 during the further displacement of the intermediate plate 9 relatively to the waste ejectors I! held fast by their projections 29, it loses any lateral support in, its recesses corresponding to the ejectors I'I andtherefore falls freely out of the casting slot I5 of the intermediate plate 9. The type-line body"! naturally cannot be affected detrimentally by the abovedescribed ejec- ('25 tion of the waste piece II, because'the type-line body is already separatedfrom thewaste piece II beforeflthe commencement of the actual ejecting operation, in orderthen to be forced out 'of the

mould

3, 4 by the known line ejector not,30 shown, which passes through the slot I4 in the intermediate plate 9 into the mould slot 6.

During the next working operation, that 'is't'o say, when the mould holder I and the parts connected thereto are again pivoted into the cast-g gs ing position shownin Figures 1,- 3 and 5 the intermediate plate 9 also carries the waste ejector I'I during its displacement, back into its lower end position corresponding to the casting position.

In order to permit ready joining together of the parts and a rapid insertion of the intermediate plate 9 from'abov'e into their guide angles I0, clamping springs 23 or the like preferably are provided for holding fast the waste ejectors H in their position corresponding exactly to, the grooves I6 in the intermediate plate 5!, these springs being secured inside the recesses 2I of e the upper mould jaw 4 and gripping therein the projections 20 of the waste ejectors I'I inserted in their correct position. v

Having thus fully described the invention what i is claimed as new and desired to be secured-by Letters Patent is:

1. Apparatus for the production of completely cast type-line bodies, comprising a mould, a slot in said mouldfor the reception of molten metal, an intermediate plate displaceable along the face of said mould, a casting slot in said plate cooperating with said mould slot for the introduction of molten metal to said mould slot, the cooperating faces of said mould and said intermediate plate on one side of said mould slot being off-set with respect tothe cooperating faces on the other side of said slot, whereby a ledge is formed on the base of the cast type-line body, means slidably mounted on the inner face of said intermediate plate for producing a transverse foot intermediatethe ends of the cast type- -line body, said ioot'extending across the entire 0' thickness of said ca'st body and connected at. an equal level to said ledge, and means for controlling the extent of movement of said slidable means during the displacement of said intermediate plate, for ejecting the waste.

2. Apparatus for the production Jofv completely cast type-line bodies, comprising a mould,

a slot in said mould for the reception of molten metal, an intermediate plate displaceable along the face of said mould, a casting slot in said plate cooperating with said mould slot for the introduction of molten metal into said mould slot, the cooperating faces of, said mould and intermediate plate on one side .of said mould .slot being off-set with respect tothe cooperating faces on the other side of said slot,.whereby a ledge is formed on the base of the cast body, transverse grooves in the inner face of said intermediate plate extending perpendicularly through said' casting slot from the lower edge of said plate to a predetermined point adjacent the upper edge thereof, and means guided in said grooves for forming transverse feet intermediate the ends of the cast body which extend across pletely cast type-line bodies provided with a ledge on the base thereof, of the type including a mould provided with an adjustable mould slot,

an intermediate plate displaceable along the face of said mould, and a casting slot in said plate cooperating with said mould slot for the introduction of molten metal to said mould slot; the improvement which consists inmeans for ejecting waste and for forming transverse feet across the entire thickness of said cast bodyinterme-, diate the ends of the latter, which feet are conjnected to, said ledge at an equal level, comprising transverse grooves on the inner face of said intermediate plate, waste ejecting' devices mount, ed in said grooves and displaceable toa limited extent with said intermediate plate, anda wedgeshaped recess in each ofsaid devices in line with the casting slot .in the casting position of; the

apparatus, for ejecting'the waste line :through said casting 'slot. I 5. Apparatus as claimed in claim 4 including means on said waste ejecting devices cooperating with said. mouldyfor limitingthe movement'of' 7 said devices during displacement of said intermediate plate. l

6. Apparatus. as claimed in claim 4 including means on each of-said waste ejecting devices for 1 freeing the waste line from said ejecting devices. s '7. Apparatus as'claimed in claim 4 including m;

a projection on the upper-end of "each of said Waste ejecting devices cooperating with a recess'g in said mould for limiting the movementof said waste devices during displacement of said intermediate plate, whereby the line wastenwill b65 freed from said devices and forced outof said casting slot, and means in said recess for'positioningtsaid devices in said grooves. p 8. Apparatus, as claimed in claim 4 wherein said Waste ejecting devices are arrangedin said intermediate plate at a point intermediate the" ,ends of the casting slot.

KURT BENDORFQ'FL o'r'ro BIEBER.

KURT DAHNERT. y