US961183A - Chaplet for molding. - Google Patents

Description

G. L. WAITT.

UHAPLET POR MOLDING.

APPLIOATION FILED SEPT. 2s, 1909.

Patented June 14, 1910.

o ...gni/e'zzor l GEORGE L. WAITT, 0F BUFFALO, NEW YORK.

CI-IAPLET FOR MOLDING.

Specification of Letters Patent.

Patented June 14, 1910.

Application led September 23, 1909. Serial No. 519,246.

To aZZ 'whom it may concern:

Be it known that I, GEORGE L. WAITT, a citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented a new and useful Improvement in Chaplets for Molding, of which the following is a specification.

This invention relates to a chaplet which is more particularly designed for use in molds for casting car wheels although the same maybe also used for casting other articles.

The object of this invention is to produce a chaplet at low cost which can be readily applied to the mold for holding the main or body core in place, which is not liable to become loose and displaced in the mold while handling the lat-ter, and which provides a vent for gases generated in the adjacent part of the mold and around the chaplets which otherwise would cause blow holes owing to the inability of the gases to escape.

In the accompanying drawings Figure l is a vertical section of a car wheel mold or flask provided with my improved chaplet. Fig. 2 is a fragmentary horizontal section of the same, in line 2 2, Fig. 1. Fig. 3 is a fragmentary vertical transverse section, on an enlarged scale, of the cope of the mold taken at right angles to Fig. l and showing my improved chaplet applied thereto. Fig. 4 is a fragmentary horizontal section in line 4 4, Fig. 8. Fig. 5 is a perspective view of my improved chaplet.

Similar letters of reference indicate corresponding parts throughout the several views.

The mold to which my improved chaplet is applied may be variously constructed to produce different castings but that shown in the drawings is designed for casting car wheels and is constructed as follows:

A represents the nowel or drag of the iiask resting on the bot-tom board a and containing the lower part al of the sand, B the cope containing the upper part of the sand Z), C the chill arranged between the nowel and cope, D the web or pan core provided on its underside with a plurality of core prints Z whereby t-he pan core is supported on the sand of the nowel, and E the center or hub core which is supported at its upper and lower ends by means of prints on the sand of the cope and nowel. The parts are of well known and usual construction and form the mold cavity F in which the car wheel is cast,

the metal being poured into the same through the sprues f in the central part of the sand in the cope. On the underside of the cope and above the pan core the cope'is provided with a plurality of lugs H each of which has an opening or socket h extending vertically through the same from top to bottom.

G represents my improved chaplet one of Awhich is'adapted to cooperate with each of the sockets Zt and the adjacent part of the pan core for holding the latter in place. In its preferred form the chaplet is constructed of a single piece of sheet metal which lis bent into substantially V-shape, thereby forming two resilient or spring arms g, g which are connected by a bight or bow z' at one end while their opposite ends are disconnected and movable toward and from each other. Each of the arms has a narrow upper part or neck j and a wide lower part or body 7e forming upwardly facing shoulders Z between the neck and body. At the lower end of each arm the same is provided with an inwardly turned horizontal foot m.

In the use of the chaplet the upper narrow parts of its arms are pushed upwardly into one of the cope socket-s from the underside thereof whereby these arms upon engaging opposite sides of the socket will be contracted owing to the wedge action of the V- shaped chapletin the socket, thereby holding the chaplet frictionally in position on the cope and preventing displacement thereof while handling the cope or the mold when assembled. The chaplet is preferably inserted in the socket of the cope until its shoulders Z bear against the lower end of the socket lug, whereby these shoulders operate as gages or stops for determining the proper extent of insertion of the chaplet into the cope sockets and thus permitting the chaplets to be applied to the cope quickly and accurately without exercising great care for this purpose.

When the cope carrying the chaplets is assembled With the nowel, chill, pan core, and hub core, the feet of the chaplets rest on the upper side of the pan core and thereby prevent the latter from floating when the metal is poured into the mold cavity. Owing to its elasticity the chaplet adapts itself to the socket which receives the same and is firmly secured therein by friction, thereby always insuring a tight lit of the chaplet in the socket and compensating for variations which usually exist in the diameter of these sockets as well as avoiding the necessity of applying a lling of paper or other material around the chaplet for holding the same in the socket, as has b-een frequently necessary when using chaplets as heretofore constructed.

The upper contracted parts of the chaplet when inserted in the socket do not entirely fill the latter but leave vent passages between the bore of the socket and the narrow parts of the arms within the same. By this means any gases generated during the operation of pouring the metal into the mold cavity can escape from the latter through the vent passages in the chaplet sockets and dissipate in the sand of the cope above the same. The chaplets as heretofore constructed do not provide a vent and the gases generated therefore have no means of escape, thereby forming cavities or blow holes in the castings when the same solidify. The feet m operate stops which engage with each other when the arms g are pressed together preparatory to inserting the chaplet. in a socket h, thereby preventing the arnis g from becoming strained and losing their elasticity.

By the use of my improved chaplet itl is possible for a molder to set up perfect molds with greater facility and in larger numbers for a given time than has been possible heretofore, thereby increasing the output and reducin g the cost of the same accordingly.

I claim as my invention: Y

l. A chaplet of V-shaped form having two arms which are connected 'at one end while their opposite ends are disconnected.

2. A chaplet having two arms which are connected at one end while their opposite ends are disconnected, each of said arms having a contracted part adjacent to its connection with the other arm and a wide part at its free end.

3. A chaplet having two arms which are connected at one end while their opposite ends are disconnected, each of said arms having a contracted part adjacent to its connection with the other arm, a wide part at its free end and a foot at its free end.

4. A chaplet constructed of a single piece of sheet metal in substantially V-shaped form and comprising two arms which are connected at one end by a bow while their opposite ends are disconnected and provided with feet which project toward each other, each of said arms being narrow adjacent to its connection with the other arm and wide at its free end, forming shoulders on said arms which face toward the connection be tween said arms.

Vitness my hand this 16th day of September, 1909.

GEORGE L. VVATT. Vitiiesses Trino. L. Porr, ANNA Hanns.

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