US314226A - Means for casting car-axle boxes - Google Patents

Description

(No Model.)

I. H. OONGDON.

MEANS POR CASTING GAR AXLE BOXES. N0.314,z26.

Patented Mar. 24, 1885.

UNTTn STATES BATT-NT Ottica.. i

ISAAC H. GONGDON, OF OMAHA, NEBRASKA.

MEANS FOR CASTING CAR-AXLE BOXES.

SPECIFICATION forming part of Letters Patent No. 314,226, dated March 24, 1885.

(No modtl 'i YTo all whom it may concern,.-

Be it known that I, Isaac H. CoNeDoN, a` citizen ofthe United States, residing at Omaha, in the county of Douglas and State of Nebraska, have invented certain new and useful Improvements in Means for Casting Car-Axle Boxes, of which the following is a specication, reference being had therein to the accompanying drawings.

This invention has reference to improved means employed in casting car-axle boxes of that class whichis shown in United States Reissue No. 8,947 of original Patent No. 192,199, dated June 19,1877; and the object of the invention is to provide suitable cores for determining the outline and contour of the interior of the car-axle box and the cover therefor, which are shown in said patents.

Heretofore in producing the said boxes, known as the Hewitt Box and Cover,77 the patterns and core have been made in two pieces. These have been divided upon a substantially longitudinal vertical line or section, so that in placing the cores in the sand either of t-he two sections was liable to become misplaced with relation to the other, so that the grooves or guide-slots for the cover, the apertures for the dust-guard, and the bearings for the brasses upon either side were thrown out of the desired relative position with those of an opposite side of the box. Besides these objections, others resulting from variation in the actual size of the section of the core would produce irregularity in t-he conformation of the interior of the box.

Referring to the drawings, Figure 1 is a perspective of the main core and a covercore mounted thereon, each being constructed and arranged in accordance with my invention. Fig. 2 is a perspective and interior view of a cover-core box and baking-pan., Fig. 3 is a perspective of one side of said box detached. Fig. 4 is a perspective of the core formed in and by the use of the box represented in Fig. 2, and Fig. 5 is a central vertical longitudinal section of a flask with the cores in position therein.

Like letters indicate like parts in all the figures.

It will be noticed by reference tothe patents above mentioned that the cover of theaxle-box is retained in connection therewith by means of a lug at each of its edges, which rides in grooves formed in the inner walls of the box and at each side of the opening therein, through which oil is introduced, the cover being removable from the box only after the box is removed from the truck, and then by withdrawing the cover to the rearward from the said opening, the lugs passing out of the grooves at their upper' and rear ends.

A pattern of the desired conformation is employed to produce the mold Xin the sand, which gives the exterior conformation to the box, and also seats or core-prints Y at suitable points for sustaining the projections A of the main core A, so as to support the same Within the mold in such manner as to give the desired thickness to the walls of the box and otherwise determine the contour of its interior. The main core is provided with depressions AIl at its upper edges and about at its mid-length, into which the metal runs to form lugs or guides for maintaining the usual brass bearing-blocks in proper position within the box, and it is also provided with a vertical portion, Ai, which forms in the completed box the receptacle ofthe dust-guard and portions which embrace the axle at or near its point of entrance i'nto the box. The said portion A3 is united to the main body of the core by a rib or web, A, arranged at the bottom only and about the transverse center of said portion. The projection A is substantially rectangular in cross-section, and produces in the completed box the rectangular opening through which oil is introduced. Upon the projection A is mounted a separate core, B, having a rectangular opening, B', adapted to tit the projection A', and having at each of its edges a curved rib, B2, the upper portion of the core being thickened and curved or bent to agree substantially with the curvature of the ribs.

To make the core B, I employ a box, C, 9 having a rectangular frame or flange, O', arranged centrally thercin, and having end walls, C'l C, t-he latter curved, as shown, so that in connection with the curvature C* in t-he bottom between the tiange C and the end wall C3 a general outline is given agreeing with that of the core to be produced.

D represents the side walls of the core-box C, and each one is provided with rabbets or IOO iianges D', adapted to enter a groove, C", l formed in the curved end wall C3, and a groove, G5, formed in the end Wall C. By this construction the sides may be removed from the bottom, and with them the core be lifted out directly therefrom.

I construct the core-box C entirely of iron, as well as also its sides D, so that in casting, said sides I form curved depressions D2, which form the ribs B'Z of the core, which in turn form the grooves for the box-cover. By being formed of iron the box serves as a bak-ingpan and prevents the core from warping during the process of baking.

The box C, being filled with core-sand properly pressed therein and struck off to agree with thev outline of the upper edges of the same, is placed with the core therein in an oven for the purpose of baking theP core, and when baked the core is removed from the box by lifting the sides and the core from the bottoni and end walls of the box, as described.

Having described my invention and its operation, what I claim isl. The combination of the main core A and the separate core B, substantially as speciA fied.

2. The combination of the main core A, provided with the core-supporting projections A,With the separate core B, mounted upon one of the projections, substantially as specified.

3. The combination of the main core A, provided'with the depressions A2 and with the projection A, with the separate core B, provided with the curved ribs B, substantially as specified.

4. The core B, provided with the opening B and the curved ribs B3, substantially as shown and described.

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

ISAAC H. CONGDON. Witnesses: Y

G. J. HUNT, I. E. CoNGDoN.'

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