US667211A - Method of producing type-casting molds and matrices. - Google Patents

Description

No. 667,2". I Patented Feb. 5, l90l.

J. c. rowu-zn.

METHOD OF PRODUCING TYPE CASTING MDLDS AND MATRICES.

Applice-tion Med Aug. 21, 1899. Renewed July 9, 1900.)

(No Model.)

LATENT Fries.

NITED STATES JOSEPH O. FOWLER, OF BALTIMORE, MARYLAND, ASSIGNOR TO THE FOWLER OOMPOSING AND TYPE-SETTING COMPANY, OF CHICAGO, ILLINOIS.

METHOD OF PRODUCING TYPE-CASTING MOLDS AND MATRICES.

SPECIFICATION forming part of Letters Patent No. 667,211, dated February 5, 1901.

Application filed August 21, 1899. Renewed July 9, 1900. Serial No. 23,045. (No model.)

To all 1117mm i may COW/667%: group or set of types bearing difierent char Be it known that I, JOSEPH O. FOWLER, a acters should be in all instances accurately citizen of the United States, residing at Balformed and properly arranged with relation timore city, in the State of Maryland, have to each other in order to secure the best re- 5 invented new and useful Improvements in sults in type-casting. Ordinarily the mat- Methods of Producing Type-Casting Molds rices and the mold-cavities can be accurately andMatrices, of which the followingisaspeciproduced only at great expense for skilled fication. labor. The method of construction that I This invention relates to a novel method of have devised enables the mold-cavities and 1o producing a type-casting mold and matrix for matrices to be properly produced with great use in that class of'machines for casting and accuracy and with the expenditure of but litsetting types wherein provision is made for tle time and labor. the simultaneous casting of a group or set of In practicing my improved method of contypes bearing different characters and for the structing a type-casting mold and matrices :5 accumulation of the cast types in assorted Iprovideamold-body Withapluralityof moldcolumns or piles in the magazine of a typecavities that may be arranged in one or more setting mechanism. series, preferably with the cavities in one se- It is the purpose of my invention to prories alternating with the cavities in the adduce a type-casting mold with a plurality of joining series and with a pattern-type located 2o mold-cavities arranged in one or more series, in each mold-cavity, and I further provide according to the variety of types to be cast the matrix-supporting bar with a plurality of simultaneously, and wherein the mold-cavicavities corresponding with and arranged opties shall be accurately formed with Walls posite to the character-bearing ends of said composed of suitably-hardened surfaces and pattern-types, and I then press or punch into 25 also to produce a plurality of accuratelyeach of said cavities in the matrix-supporting formed matrices for use in conjunction with bar a matrix-block of suitable soft metal or the mold-cavities of the type-casting mold. composition to take the impression of a char- In the annexed drawings, illustrating my acter on the opposing pattern-type, and subinvention, Figure l is a vertical transverse sequently I remove the pattern-types, leav- 8o 0 section of atype-casting mold and its matrix ing the mold-cavities clear for use in casting produced in accordance with my improved types in conjunction with the matrices. method and'shown as mounted in condition Referring to Figs. 1 and 2, the referenceto be placed in a machine for casting and setnumeral 1 designates a frame comprising a ting types. Fig. 2 is a partly-broken-away matrix-supporting bar 2, having a plurality 5 front elevation of the type-casting mold and of cavities 3 formed therein and extended matrix-supporting bar. Fig. 3isadetail view, through said bar, as shown. A mold-body; in side elevation, of parts that may be emis so constructed as to be trunnioned at its ployed in constructing the type-casting mold. ends in the said frame 1 immediately in rear Fig. 4: shows in perspective a pattern-type of the matrix-supporting bar. In this mold- 0 and a spacer-block to be employed in conbody 4 I form a plurality of mold-cavities 5,

structing the mold and in producing a macoinciding with the cavities 3 of the matrixtrix. Fig. 5 is a part sectional elevation of supporting bar for the casting of types bearparts of a type-casting mold with patterning characters and with other mold-cavities types therein. Fig. 6 is a transverse sec- (designated by 5) in Fig. 2, which need not 5 5 tional elevation of the type-casting mold with coincide with any cavity of the matrix-suppattern-types therein and the matriX-supporting bar. These latter mold-cavities 5 porting-bar, illustrating the method of form are for the casting of slugs, blanks, or spaces ing a matrix. bearing no character or letter, and conse- It is important that the matrices and moldquently requiring no matrix. There may be 50 cavities to be used in a type casting and setmore than one series of mold-cavities in the ting machine for simultaneously casting a type-casting mold and more than one series of as shown in Fig. 2.

cavities in the matrix-supporting bar, and in this event the cavities in one series will alternate with the cavities in the adjoining series,

For the purpose of securing the greatest accuracy in the formation of the mold-cavities 5 and 5 it is preferable to provide these mold-cavities with hardened walls that may be produced by bars 6 and 7, of steel or other hardened metal, and by interposed spacer-blooks 8, also of steel or hardened metal, alternating with steel patterntypes 9 and 9 the said pattern-types and spacer-blocks being interposed between the hardened bars 6 and 7,as shown in Figs. 8 and 5. In assembling the bars 6 and 7,spacer-blocks 8, and pattern- types 9 and 9 the lowermost bar will be placed level on any suitable support and the spacer-blocks 8 and pattern-types 9 will be laid transversely thereon, alternating with each other and in close contact, and with the blank patterns 9 at or toward one end. The upper bar 6 will then be brought down onto the spacer-blocks 8 and patterns 9 and 9, and all these said parts may then be firmly secured together by means of rivets 10, passed through certain spacer-blocks at proper points, as shown in Fig. 5. The upper side of the upper bar 6 is provided with a longitudinally-arranged tongue 6, preferably dovetailed or undercut along its opposite edges to be securely engaged in a correspondingly-dovetailed groove formed in the bottom of the mold-body 4:, as indicated in Fig. 1. The under side of the lower bar 7 may be constructed with a longitudinally-arranged dovetailed groove to receive a tongue on the upper side of another group of bars and interposed spacer-blocks and patterns, as shown in Figs. 1 and 6. Several groups of these bars 6 and 7, interposed spacer-blocks 8, and patterns 9 and 9 may be connected together in a type-casting mold Where it is desired to employ several series of mold-cavities. The cavities 3 in the matrix-supporting bar 2 are preferably cylindrical in form, as shown in Fig. 2, and are bored or drilled through the matrix-supporting bar at such points as to coincide with the character-bearing pattern-types 9, as shown in Figs. 1 and 2. There need be no cavities 3 corresponding with the patterns 92 which bear no characters, except as hereinafter provided. The mold-body 4 having been trunnioned to the frame 1-of the matrix-supporting bar 2 these parts are next placed in the position shown in Fig. 6 on a suitable firm support 11 and are secured thereon by aclamp 12 or other suitable means. A matrix-block 13, Figs. 1 and 6, is then inserted in each cavity 3 of the matrix-supporting bar and is driven down therein by means of a punch 14 or other suitable'instrument, so as to cause the formation of a matrix in said block by the raised type character on the end of the pattern-type. The matrix-block 13 may be made from lead, copper, or any metal composition that will be suitable for the formation of a matrix. By

forcing this m atrix-block into a cavity 3 under a suitable pressure it will be made to completely fill and accurately fit the inner end of said cavity flush with the face of the typecastiug mold, so as to produce an accuratelyforrned matrix and without leaving any spaces outside the matrices, into which molten metal could enter when the matrix and mold are subsequently employed in the casting of types in a type casting and setting machine. After the matrixblocks have been forced accurately and properly into the cavities 3 the matrix-supporting bar,with its frame and the mold body trunnioned thereto, will be removed from the bed 11, and the mold-body will then be swung on its trunnions to disengage the pattern types from the matrices, and then these pattern- types 9 and 9" will be ejected by suitable pressure applied to their butt-ends, thus leaving the type-casting mold provided wi th a plurality of accurately-formed mold -cavit-ies 5 and 5, the mold-cavities 5 each coinciding with a matrix formed in a matrix-block and the mold-cavities 5 being adapted to fit against a plane or unperforated portion of the matrix-supporting bar. It will be seen that each matrix is accurately formed to correspond to the character on an opposite pattern-type and that all the mold-cavities 5 and 5 are provided with perfectly accurate and hardened Walls formed by the bars 6 and 7 and interposed spacer-blocks 8, with which the pattern-types will alternate.

This method of forming the type-casting mold and matrices for use in machines for casting and setting types is more economical and effective than those methods of construction wherein it is necessary to bore or tap out the required mold-cavities or wherein it is necessary to form the matrices by means of expensive machinery.

By forming the matrices in the manner described in matrix-blocks 13, forced into cavities 3 in the matrix-supporting bar opposite the character-bearing pattern-types 9, there will be secured a fluid-tight joint with each mold-cavity 5 when the mold and matrices are mounted in operative position in a typecasting mechanism. For the purpose of obtaining a similar fluid-tight joint at each mold-cavity 5 for casting slugs and spaces it is preferable to provide the bar 2 with additional cavities 3, Fig. 2, one opposite each mold-cavity 5, and to force suitable plugs into each of these cavities 3" flush with the inner face of the bar 2, thereby securing a fluid-tight joint with each mold-cavity 5*, so that the ends of the slugs, blanks, or spaces to be cast therein will be free from burs or irregularities due to leaking or spreading of the molten metal.

What I claim as my invention is- 1. The method of producing a type-casting mold and matrices for a type casting and setting machine to simultaneously cast a group or set of types bearing different characters, which consists in forming in a mold-body a IIO plurality of mold-cavities, locating patterntypes in said cavities, providing a matrixsupporting bar with a plurality of cavities coinciding with the character-bearing pattern-types of the mold, pressing matrix-blocks into said cavities of the matrix-supporting bar into close contact with the characters on said pattern-types to take impressions therefrom, and ejecting the patterntypes, substantially as described.

2. The method of producing a type-casting mold and matrices for a type casting and setting machine to simultaneously casta group or set of types bearing diiferent characters, which consists in attaching to the body of a type-casting mold, upper and lower horizontally-arranged hardened metal bars,interposing pattern-types transversely between said bars, alternating with metal spacer-blocks, and securing said bars and spacer-blocks together, forming a plurality of cavities in a matrix-supporting bar coinciding with the character-bearing pattern-types of the mold, forcing a matrix-block into each of said cavities of the matrix-supporting bar coincident with the character-bearing types of the mold so as to take an impression therefrom, and

ejecting the pattern-types from said .mold, substantially as described.

3. The method of producing a type-casting mold and matrices for a type casting and setting machine to simultaneously cast a group or set of types bearing difierent characters, which consists in forming in a mold-body a plurality of mold-cavities, locating pattern types and slugs in said cavities providing a matrix-supporting bar with a plurality of cavities coinciding with the pattern types and slugs of the mold, pressing matrix-blocks into some of said cavities of the matrix-supporting bar into close contact with the characters on said pattern-types to take impressions therefrom and forcing plugs into other cavities of the matrix-supporting bar to form close joints with the pattern-slugs, and subsequently ejecting the pattern types and slugs, substantially as described.

In testimony whereof I have hereunto set my hand in presence of two subscribing Witnesses.

JOSEPH O. FOWLER.

Witnesses:

JAMES L. NORRIS, F. B. KEEFER.

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