US1027673A - Core-chaplet. - Google Patents

Description

I E; W. SMITH.

GORE GHAPLET. APPLIOATiON FILED APILI], 1911; RENEWED APR. 11, 1912.

1,027,673. Patented May 2 ,1912.

COLUMIIA mooui-n co. WASHINGTON, n. c.

UNITED STATES PATENT OFFICE.

EUGENE W. SMITH, OF CHICAGO, ILLINOIS, ASSIGNOROF ONE-HALF TO HENRY N.

HUDSON," F CHIGAGO,-ILLINOIS.

CORE-GHAPLET.

Specification of Letters Patent.

Patented May 28,1912.

Application filed April 11, 1911, Serial No. 620,498. Renewed April 11, 1912. Serial No. 690,045.

To all whom it may concern: Be it known that I, EUGENE VV. SMITH, a citizen of the United States, resident of -Chicago, in the county of (look and State of Illinois, have made a certain new and useful Invention in Core-Chaplets; and I, declare the following to be a full, clear, and exact description. of the same, such as will enable others skilled in the art to which it appertains to make and use the invention, reference being had to'the accompanying draw- .ings, and to letters or figures of reference marked thereon, which form a part of this specification.

Figure 1 is a central longitudinal section, partly broken away of a molders flask and core, having my invention applied thereto.

Fig. 2 is a cross section of a molders flask and core, having the invention applied thereto. Fig. 3 is a detail perspective view of the invention. Fig. 4: is a detail end View of the same. Fig. is a detail side view of the same. Fig. 6 is a detail plan view of the same. Fig. 7 is a detail perspective view of a form of the invention hav ing curved bearing portions at one side thereof. Fig. 8 is a detail end view of the same.

'The object of the invention is to provide, in the molders art, a chaplet or anchor device of superior character and economic structure, and the invention consists in the novel construction and combinations of.

separated from the matrix wall by the proper interval to allow for the thick mass of the casting "wall. The purpose of the chaplet or anchor device is to support the corein the matrix, and, to that end, a sufficient numberof these devices are adjusted between the matrix surface and the wall or surface of the core, in different places about the core, so that it will be held securely in position. And while the shapes of matrices and cores are of great variety, their surfaces are nevertheless made up of plane portions, curved portions, or plane and curved portions, and as the surface wall of the core is which are of comparatively small size, can

be provided in sufliciently difierent shapes to meet the conditions involved. F urthermore the chaplet herein provided is designed to have considerable flexibility lengthwise, while transversely, or in the direction of its thickness, it is quite stable or stiif.

The chapletsare indicated at g. Each of these'consists of a narrow, thin strip or ribbon of'metal, preferably tin or tinned sheet metal, having beveled ends, which is bent into the form of a flattened spiral of several substantially equal and parallel whirls, having the general outline of a parallelogram. Each whirl of the helix or spiral consists of two oblique bars or hearing portions h, la,

of different angular directions, and two short end portions or strut bends m, designed to extend. between the core surface and matrix wall and to sustain the pressure required to hold the core in position. The bearing portions h, 71;, and k, 7:, of the chaplet are usually of plane character, being designed respectivelyto coincide in planular relation so as to provide flat bearings for the sand surface and the core surface. Between these portions extends'throughout the chaplet a spiral interval 39, which also separates the strut portions m. When the surfaces of the core and matrix are ofcurved,

or curved and plane form respect-viely, the

spiral chaplet is constructed to suit such forms, in having the oblique bearing portions of one or both of its surfaces correspondingly shaped. In allcases, however,

the short strut-like end portions of each whirl are designed to have sufiicient width and thickness to provide proper strength of support when several of these whirls are combined in the ribbon chaplet, as indicated in the drawings. This chaplet is ofelastic nature, and yetit possesses considerable strength and stiflness to resist compression in any direction. At the same time it has flexibility, so that it is easily adjusted to position, and because of its flexibility and the separation of its whirls along the bearing surfaces, it readily accommodates itself to irregularities of surfaceof the core and mold; and because of the frictional engagement due to the barred arrangement of its surfaces, its bearings are rendered secure.

These Chaplets are designed to be made by winding or coiling the narrow ribbon of metal around templets of various shapes, suited to the character of the work in which the chaplets are to be used.

Having described the invention, what I claim and desire to secure by Letters Patent is:

1. A molders chaplet, consisting of a narrow flattened spiral ribbon of sheet metal, having opposite oblique bearing portions connected at their ends by short strut bends, the whirls of the spiral being separated by a continuous interval.

2. A helical chaplet consisting of a series of flattened whirls having opposite oblique surface bearings connected by strut-like bends at their ends, and a spiral interval extending between said bearings and bends.

3. A molders chaplet of flattened helical form, consistingof a narrow metal ribbon having flattened whirls in substantially parallel position.

In testimony whereof I affix my signature, in presence of two witnesses.

EUGENE W. SMITH.

Vitnesses:

GEORGE V. MOINTYRE, D. W. HEFFRON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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