US749928A - Chill - Google Patents

Description

PATENTED JAN. 19,1904.

J. w. FULLER, JR.

CHILL. APPLIIOATION FILED JULY 3;. 1903.

N0 MODEL.

m: nonms warms co.. PnoTauma, wAsumccroN, n. c.

I UNITED STATEs Patented January 19, 1904.

PATENT OFFICE.

JAMES W. FULLER, JR, OF CATASAUQUA, PENNSYLVANIA.

CHILL.

SPECIFICATION forming part of Letters Patent No. 749,928, dated January 19, 1904.

Application filed July 31, 1903. $e1ia1 No. 167,668. (No model.)

sauqua, in the county of Lehigh and State of Pennsylvania, have invented certain new and 'useful Improvements in Chills, of which the following is a specification.

My invention has relation to a chill for the interior surface of a ring, and in such connection it relates to the construction and arrangement of sections whereby an annulus contractible in diameter during the chilling operation may be produced by the outer faces of the sections in the mold or flask provided with a suitable filling, the annulus or ring being particularly adapted for use in cement-grinding mills, in which they form when assembled a means by which the materials are reduced by attrition. Heretofore in mills of this character steel bands or rings were used to form the annulus; but experience has shown that under the attrition of the materials to be reduced, as well as the rolls placed inside the cylinder, the interior face of the rings wears out with much greater rapidity than if said rings were formed of cast-iron with a chilled inner face. It has also been found prior to my invention to be well-nigh impracticable to properly chill the interior face of cast-iron rings for certain reasons, among which may be enumerated the tendency of the ring to warp or be distorted in the ordinary chilling operations, as well as the formation of imperfectionssuch as fins, cavities, &c.-upon said interior face of the ring.

The principal object of my present invention is to chill the interior face of a cast-metal ring, so that the face will remain a perfect annulus after chilling with no fins or other imperfections of an appreciable extent appearing upon the face. To accomplish this object, there is placed in a mold or flask adjacent to the interior surface of the ring to be cast a chill formed of a plurality of sections so arranged with respect to each other and the central sand filling of the mold or flask that in the pouring of the metal to form the ring the exterior of the sections forms a perfect annular chilling surface against which engages the interior face of the ring.

- The nature and scope of my invention will be more fully understood from the following description, taken in connection with the accompanying drawings, forming part hereof, in which- Figure 1 is a top or plan view of a mold or flask containing the sectional chill-ring embodying main features of my invention, certain parts of the sand being removed for clearness of illustration. Fig. 2 is a cross-' sectional view taken on the line 2 2 of Fig. 1, with the sand within the sectional chilling-ring removed to more clearly show the arrangement of the chilling-sections. Fig. 3 is a top or plan view enlarged ofone of the sections of the chill-ring, and Fig. f is an inner face view enlarged of one of said sections.

Referring to the drawings, a represents the cast-metal ring, the inner face a of which is to be chilled during the casting operation in a mold b of suitable construction. Around the inner face a of said ring a is arranged a plurality of chill-sections d, forming when'assembled in the mold b a true annulus with their exterior faces, which rest adjacent to the ring a. Each chill-section d has, as illustrated in detail in Figs. 3 and 4:, an exterior curved face d of rhombohedral outline, and the inclined edges d of this rhomboid project beyond the rear face (Z of the section. In plan view, therefore, each section has a curved outer edge with relatively thin edges 0Z backed by a frusto-conical rear face 0Z This construction allows of suflicient articulation and contraction of the sectional chill without destroying the true annularity of its exterior face cl. It also permits the chill to be heated without warping, and between adjacent sections at the rear faces (Z are formed angles or nooks d into which the sand filling the center of the mold may be tightly packed to fill all openings between adjacent edges of the sections. The rhombohedral outline of each section permits of the sections interlocking with each other to form an annulus not easily distorted in a diametrical plane and permitting of the sliding of the sections on each otherin planes tangential with the periphery of the chill, when the chill is to be broken into component sections d to remove the chill from the ring a. The sand within the annulus formed by the chill-sections permits the sections to articulate and contract,so that the outer curved faces of the assembled sections will form an annulus contractible in diameterduring the chilling operation.

Having thus described the nature and object of my invention, What I claim as new, and desire to secure by Letters Patent, is-

1. A chill, comprising a plurality of sections, each having a curved outer face arranged to form when the sections are assembled an annulus, said sections being each rhornboidal in outline, substantially as and for the purposes described.

2. The combination with a mold or flask having a central filling, of a chill for the interior surface of a ring, comprising a plurality of sections, each having an outer curved face and relatively thin bearing edges and a frustoconical back against which the central filling of the flask abuts, the outer curved faces of the sections when assembled forming an annulus and the central filling permitting the articulation of the sections, whereby an annulus contractible in diameter during the chilling operation may be formed by the outer curved faces of the sections.

In testimony whereof I have hereunto set my signature in the presence of two subscribing witnesses.

JAMES W. FULLER, JR.

Witnesses:

LIZZIE DOWNS, ALEX. N. ULRICH.

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