US1143861A - Core-making apparatus. - Google Patents

Description

G. E. PICKUP.

CORE MAKING APPARATUS.

APPLICATION FILED JUNE 1|. 1913 LH3,%A m Patented June 22, 1915.

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THE NORRIS PETERS 60., PHoro-LITHEL, WASHINGTON. u. c.

G. 'E. PICKUP.

CORE MAKING APPARATUS.

APPLICATION FILED JUNE H. 1913. 1,118,861 0 Patented June 22, 1915.

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sane PAENT GEORGE E. PICKUP, OF NEWARK, OHIO, ASSIGNOR "1'0 THE X/VEI-IRLE COMPANY, OF NEVI'ARK, OHIO, A. CORPORATION OF OHIO.

CORE-MAKING APPARATUS.

Application filed June 11, 1913.

To all whom it may concern Be it known that I, GEORGE E. PICKUP, a citizen of the United States, residing at Newark, in the county of Licking and State of Ohio, have invented certain new and useful Improvements in Core-Making Apparatus, of which the following is a specification.

The object of this invention, generally speaking, is to provide an improved apparatus for making sand cores by means of which such cores may be quickly and conveniently made, vented and transferred to a receptacle to be dried without the necessity of manually handling the cores. More specifically, my invention contemplates an improved means for venting the core-parts, and an improved arrangement of swinging frames by which the core-parts may be transferred from the molds to a re ceiving plate or device on which they may be carried to the baking oven.

The improvements and advantages of my invention will be fully described and claimed in the following detailed description.

In the accompanying drawings, Figure 1 is a top plan view of one form of apparatus embodying the features of my invention. Fig. 2 is a side elevation of the apparatus, showing in dotted lines the different positions into which the sections may be swung. Figs. 3 and 4 are, respectively, a top plan view and a side elevation of a slightly modified form of apparatus.

Referring to Figs. 1 and 2, the apparatus comprises a suitable supporting framework consisting of two sides 5, two ends 6, and cross bars 7, 8 and 9, in the present instance three in number, extending between the sides 5. The framework further includes supporting legs 10. The molding means comprises two complementary half- molds 11 and 13 suitably secured in a pair of open frames 12 and 14, respectively. The frame 12 is hinged at its side adjacent to the frame 14. by suitable means such as a pair of hinge lugs 15,'which lugs receive ,pintles 16 carried by bearing studs 17 fixed on the cross bar 8. The frame 12 may thus be swung upwardly on its pintles 16 in a direction toward the opposite half-mold 13. The mold frame 14: is mounted to swing upon either of two axes located at opposite sides of the frame. The preferred means for thus mounting the frame comprises hinge lugs 18 and 19 pro- Specification of Letters Patent.

Patented June 22, 1915.

Serial No. 772,944.

jecting from opposite sides of the frame and each having pintles 20 fixed therein, said pintles being arranged to lie in notches 21 1n the upper ends of bearing studs 22 and 23 carried by the cross bars 8 and 9, respectively. If desired, the sides of the mold frames may be offset as at 24c so as to provide spaces to receive the operators hands in grasping the frames to swing them. A. frame 25 is hinged at its edge adjacent to the mold frame 14 in any suitable way, as by means of hinge lugs 26 receiving pintles 27 which are carried by studs 28 on the cross bar 9. A receiving plate or device 29 is removably mounted in the frame 25 and is adapted to receive the completed core formed by the half- molds 11 and 13. The frame may have a suitable handle 30 thereon. At the opposite end of the framework is mounted a frame 31 which is pivotally attached to the cross bar 7, as by lugs 32, pintles 33 and bearing studs 34:. In the frame 31 is fixed a vent plate 35 corresponding or complementary in shape to the adjacent half-mold 11. The vent plate has ribs of the design of the core formed by the half-mold 11. A. handle 31 provides means for swinging the vent frame. The vent plate 35 and the half-mold 13 have dowel pins 37 to enter dowel openings 38 in the half-mold l1 and the drier plate 29 for guiding the sections in their association so as to insure accurate registry.

In order to keep the half- molds 11 and 13 and the vent plate 35 dry and warm, so as. to prevent the molding sand from adhering thereto, I provide means for heating said half-molds and said vent plate, which means preferably comprises a pipe 39 communieating with a source of supply of gas, said pipe extending beneath the half- molds 11 and 13 and the vent plate 35 and having orifices therein to discharge gas beneath said parts. When the gas issuing from said orifices is ignited, the small flame will heat the half-molds and vent plate sufficiently to keep them dry and warm. 7

In constructing cores with this apparatus, the core sand is placed in the half-molds and tamped and scraped off level with their upper face. The vent frame 31 is then swung over upon the halfmold 11 and pressure is exerted on the vent frame to push the ribs 36 on the vent plate into the face of the core to form grooves therein. The vent frame is then swung back into normal position. The mold frames 12 and 14 are now swung upwardly on their adjacent or concentric axes 16 and 20 untilthe adjacent faces of the half-molds come together, said half-molds being guided by the dowel pins 37 entering the dowel openings 38. Both mold frames are now swung downwardly to the left, and the then upper halfmold 11 is tapped to loosen the core-part therein, whereupon said half-mold 11 is swung upwardly and into its normal position, leaving its core-part resting upon the other half-mold 13. The frame 25 containing the receiving or drying plate 29 is now swung upwardly and over upon the core on the half-mold 13, and said frame 25 and the mold frame 14 are then swung together upwardly to the left through an arc of 180 degrees, so that the mold frame rests upon the drier frame. The half-mold 13 is now tapped to loosen its core-part, whereupon the mold is swung back to normal position, leaving the completed core'resting upon the drier plate 29. Said drier plate is now removed from its frame and is transported to the oven where the core is baked. It will be seen that with this apparatus it is never {necessary to manually grasp or handle any part of the core, the latter being completely 7 formed, vented and transferred by operating the swinging frames.

In the alternative embodiment illustrated in Figs. 3 and 4, the mold frames 12 and 14 and the receiving frame 25 are mounted on the supporting framework in the same manner as in the embodiment above described. The venting means, however, differs from said embodiment. The vent frame 40 has its edge adjacent to the mold frame 12 hinged at 44 to the framework, and said vent frame has mounted therein two separate vent plates41 and 42 provided with ribs 43,

said plates being spaced apart a distance equal to the distance between the half-molds .11 and 13, and the ventplate 41 being spaced from the pivotal center of the Vent frame the same distance as the half mold 11. When the sand has been tamped in the half- molds 11 and 13, the vent frame 40 is swung over upon the mold frames 12 and 14, the r1bs on the vent plates forming a groove in the face of each of the core-parts in the halfembodiment, but the function and effect is the same.

When the core-parts are of suflicient depth, the single vent plate machine, shown in Figs. 1 and 2, may be used, the vent groove being formed wholly in one-half of the core. It is sometimes not feasible to thus form the vent wholly in one-half of the core, this being true when the core is thin or shallow. In such case, the double vent plate machine, shown in Figs. 3 and .4, may be used so that the vent will be formed partially in one-half of the core and partially in the other half.

It is obvious that my invention may be modified in various ways in its embodiment without departing from its spirit and scope, Wherefore I do not limit myself to the precise construction herein disclosed.

I claim as my invention:

1. A core-making apparatus comprising two half-molds, and a receiving device for the completed core, said receiving device being hinged at its edge adjacent to said halfmolds, the half-mold adjacent to said receiving device being hinged to swing on either of two axes at its opposite sides, and the other half-mold being hinged at its edge adj acent to the last-mentioned mold.

2. A core-making apparatus comprising a mold section, a device adapted to receive the completed core, said mold section and said device being hinged upon axes at their adjacent edges, and a second mold section positioned between the first mold section and said receiving device, said second mold section being hinged to swing on axes at opposite edges either toward the first mold section or toward said receiving device.

3. A core-making apparatus comprising a mold section and a receiving device, and a second mold section positioned therebetween and hinged to swing toward either.

4. A core-making apparatus comprising a supporting framework, two mold sections each of which is hinged thereto to swing over toward the other, and a venting device also hinged to said framework and arranged to swing over on top of one of said mold sections to vent the core part therein.

5. A core-making apparatus comprising a supporting framework, two mold sections each of which is hinged to said framework to swing over toward the other and a venting device pivoted to said framework at its edge adjacent to one of said mold sections, said venting device being arranged to swing over on top of one of said mold sections to vent the core part therein.

6. A core-making apparatus comprising a supporting framework, two half-molds mounted therein, the first half-mold being hinged at its edge adjacent to the second half-mold, and the second half-mold being hinged to swing on axis at opposite edges, a venting device pivoted to swing toward the first-mentioned half-mold, and a receiving device pivoted to swing toward the secondmentioned half-mold.

7. A c'ore making apparatus comprising a supporting framework, and two halfmolds, a venting device, and a receiving device mounted on said framework, the halfmolds being located side by side, and the venting device and the receiving device be ing located at opposite sides of said halfmolds, the first half-mold being hinged to swing toward the second half-mold, the venting device being hinged to swing toward the first half-mold, the second halfmold being arranged to swing in opposite directions either toward the first half-mold or toward the receiving device, and the receiving device being hinged to swing toward 15 the second half-mold.

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

GEORGE E. PICKUP. Witnesses:

CHAS. H. HAHN, D. N. SKINNER.

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

Washington, 1!). 0.

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