US1749770A - Mold and core for line-casting machines - Google Patents

Description

March 11, 1930. E. w. JOHNSON HOLD AND CQBE FOR LINE CASTING IACHINES Filed Sept. 24, 1927 I I I 1 /2 is flitwvu g.

- hi'zrzeesess Patented Mar. 11, 1930 UNITED STATES PATENT OFFICE ERIK W. JOHNSON, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF T LEON A. KAM- RAD'I, OF CHICAGO, ILLINOIS MOLD AND CORE FOR LINE-CASTING MACHINES Application filed September 24; 1927. Serial No. 221,671.

My invention in general relates to improvements in molds and cores, and has for its object the provision of a novel mold, adapted to cast printers low furniture, stereotype and zinc high, with a single quad block.

Another object of my invention is to provide a combined cap and core as a single unit thereby eliminating the time and labor heretofore required to separately coordinate these elements together in an operative manner.

A further object of my invention is to produce a slug of a stronger and more rigid construction particularly adapted to overcome the bending and fracture to which ordinary slugs are liable.

Other objects and advantages will present themselves, as the invention is better understood, more fully in the hereinafter specification, when taken in connection with the accompanying drawings, in which,

Figure 1 is a cross sectional view of a combined cap and core as applied to a quad block and a mold body with parts of the cooperating elevator or carrier, shown in section.

Figure 2 is a perspective View of a low slug known as furniture, produced by my novel device.

Figure 3 is a cross sectional view of a modilied form of a quad block, in which the face element is cast integrally therewith.

Referring more particularly to the drawings in which similar characters of reference apply to like parts in the several views, 15 designates a mold body which has the integral supporting projections, and threaded posts, the latter being adapted to enter the recesses of the combined cap and core and, by means of the usual nuts (not shown), secure the mold body firmly to the cap and core. The slug 18 having the top wall 19, bottom wall 20, an imperforate back 40 which may serve as a character-bearing shelf, and the transverse webs 21, is formed by the assembly shown in Figure 4, which also includes a quad block 19 having a slotted wall 20 provided with a ledge 30, it being understood that in practice the bottom wall20 of the slug 18, rests against ledge 30.

The quad block 19 is further provided with a recessed portion 31 having a ledge 32 adapted to cooperate with a face 33 of the mold base 15. The shouldered mold ledge 34 of the quad block 19 fits into the slotted portion 35 0f the mold base 15. The quad block 19 has a slot 36 and an L shaped'slot 37 which are adapted to accommodate registering parts of an elevator or carrier 38.

The wall 20 has an extended portion 39 beyond the main body of the block 19 to cooperate with parts of the combined cap and core. The quad block 19 is particularly formed and adapted to prevent collapse and fracture of its walls, which in this art is of frequent occurrence. By merely increasing the horizontal dimensions of those parts of my combined cap and core which immediately form the slug, 1 can cast from printers low furniture, as it is called in this art, to

stereotype and zinc high, with a single quad block. The'slugs formed by my mold range in size from 636 pt. body and 30 ems pica long, these different sizes being obtained by merely changing from one combined cap and core to another.

It is to be particularly emphasized that with my novel type of combined cap and core, I am, in addition, able to dispense With the multiplicity of quad blocks heretofore used, since, by my method, but one quad block is required. V A number of practical advantages result from the constructionand method herein illustrated and described, among which I have foundthat in combining the cap and core into a single unit, I have succeeded not only in eliminating the time and labor necessary to adjust and secure in position the plurality of parts hitherto used, but in addi tion have obtained a strengthening of the core, the metal of which as is well known, has been subject to crystallization and consequent susceptibility to fracture. My method of forming the webs of the core in unbroken continuity with the main body of the cap brings a considerably greater cross sectional area of metal to the reinforcement of the slug forming core, and in this manner the progress of crystallization is greatly retarded.

My novel mold assembly is adapted to be used with any of the universal types of molds employed in this art.

While I have herein described and in the accompanying drawings illustrated a preferred form of my invention, I do not thereby desire or intend to limit myself specifically thereto, as it will be understood that minor changes of construction and arrangement of parts may be made if desired without departing from the spirit and scope of the invention as defined in the appended claims.

' What I claim as new and desire to secure by Letters Patent is 1. An integral slug of a cellular type of construction having a bottom, an overhanging top and an imperforate back, a plurality of transverse'webs coextensive in length with p the bottom, said overhanging top co-actlng with said webs, bottom and imper'forate back in forming cells, said imperforate back when employed as a character-bearing shelf being supported by said transverse webs and said bottom.

2. An integral slug of a cellular type of construction having a bottom, an overhanging top and an imperforate back, a plurality of transverse webs lying between said top and bottom and forming with said imperforate back a plurality of cells, said webs being coextensive in length with said bottom.

3. An integral slug of a cellular type of construction having a bottom, an imperforate back, a top and a plurality of webs joining said top and bottom and forming there with a plurality of cells, said webs being transversely positioned relatively to the top and bottom and coextensive in length with the bottom when said bottom-is measured from the front to the rear thereof, said top being equal to said bottom longitudinally 'but being less in width than said bottom, said webs and'said bottom serving, when said imperforate back is employed as a character bearing shelf, to support said shelf, substantially at three points for each of said cells.

In testimony whereof I have signed my name to this specification. v

ERIK W. JOHNSON.

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