US907955A - Mold for casting journal-boxes and similar articles. - Google Patents

Description

l M. BERNE .Y MOLD 4FOIE. CASTING JOURNAL BOXE D SIMILAR ABTIUIES.

IIIIIIIIIIIIIII n un 2,1908.

l 907,955, Patented Dec. 29, 1908. 2 EEEEEEEEEEEE .l.`

Z l z I z W /f ff/ M. BBRNHART.

MOLD FOB CASTING JOURNAL BOXES AND SIMILAR ARTICLES.

' APPLICATION FILED HAY 2, 1908.

Patented Dec. 29, 1908.

Illll Wifi/16155655' To all whomet'may concern.' l

MICHAEL BERNHART, OF LANCASTER, NEW YORK.

" MOLD FOR/CASTING- J'OURNAL-BOXIES AND SIMILAR ARTICLES.

' Specification of Letters Patent.`

Patented Dec. 29, 1908.

Appliation mea May 2, 190s. serial No. 430,524.

Be it known thatI, MICHAEL BERNHART, a citizen of the United States, residing at Lancaster, in the county of Erie and State of New York,.have invented a new and useful Improvement in Molds for Casting Journal- Boxes and Similar Articles, of which the folf lowing is aspecification.

This invention relates to amold which is more particularly designed forlcasting such journal boxes, and also relates to a method of making said mold, but my invention also applies to molds for castingarticles in which similar conditions exist. l f

Journal boxes as now generally constructed are provided with bolt lugs or ears at the top and bottom of the bodyonopposite sides thereof` which rendered form the mold by means of an4 ordinary pattern because'the same couldnot be drawn from thesame if it had xedlugs corresponding to the upper and lower lugsof the journal box body. It has "thereforel been the practice heretofore to produce themol'd cavities of the lugs at the top of the ybody by means of lug patterns attached permanently to the upper sideof-the body ofthe pattern while the mold cavities for producing the lower lugs were each produced by a plurality of dry sand cores of expensive construction.

The object of this invention is to provide simple means whereby the mold .cavitiesfor the lower lugs of the `j ournal box may be perfectly produced with facility and at low cost and without the necessity of exercising great care or employing skilled hands for this purpose. Y

In the accompanying drawings consisting of 2 sheets: Figure 1 is a vertical cross section of a mold constructed in -accordance with my invention for castingjournal boxes'. Fig. 2 is a horizontal section inline 2 2, Fig. 1. Fig. 3 is al vertical section in line 3 3, Fig. Fig. 4 is a bottom plan view, partly in section, of the body pattern showing the same `provided with my improved means for producing the lower lug cavities in the mold.

Fig. 5 is a perspective view of the metal mold section in which one of the lower lugs of the journal box is cast. of the pattern for producing the body, upper lug and part of the lower lug cavities and the metal molds and one of the lower cores for forming the mold of the lower lu s. Fig. 7 is a perspective view of a4 `journal ox which is produced by my improved mold.

it impossible to j Fig. 6 is a cross section v Similar letters of reference indicate corresponding parts throughout the several' views. The journal box, which, for example, may be produced by my improved mold, cornprises a hollow body A, which is open at its front and rear ends and which `is provided with a pair of laterally projecting upper per forated lugs or ears c on opposite sides of its top, a pair of laterally projecting lower perforated lugs or ears @1,01 on opposite sides of its bottom, and vertical bolt grooves a2 on its opposite outer sides each groove being in line with the bolt openings in the bolt lugs on the espective side of the journal box, as shown in 1g. 7. Myimproved mold-infwhich this journal box is cast is constructed as follows B represents the main mold cavity in which the body of the journal box is cast and which has its bottom` and sides formed Wholly between a main core C and the green sand of the drag D of the molding flask while its top is formed between the :main core C and the green sand of the cope E of the flask.

F represents the mold cavities in which the upper perforated lugs or ears of the journal box are castand which are also formed between the cope and drag.

The body, the upper lug cavities and the inner part of the lower lug cavities of the mold are produced by a pattern which comprises a body G, two ,perforated lugs g arranged onopposite sides of the top or upper party ofthe body G, and partial lugs g1 arranged on opposite sides of the lower part of the body G, the opposite outer sides of the lbody also having vertical grooves gzeach of which communicates at its upper and lower ends with the openings inthe upper lugs on the respectiveside of thebody pattern, as shown in cross section in Fig. 6.

H represents .the mold cavities in which the outer parts of the lower perforated lugs or ears of the journal box arecast. Each of the lower perforated lug cavities H is formed partly by one of the lower pattern lugs g1,

partly in an auxiliary mold section I which Y is embedded in the sand of the drag, so that its cavity faces the cavity formed by a lower attern lug g1 and forms the outer side of a ower lug cast therein, and partly by a dry sand core J arranged between the metal mold section and the sand of the drag and forming the opening in said lug. The auxiliary mold sections are preferably made of metal but if desired the same may be constructedin the manner of dry sand cores or in other suitable ways.

The lower end of the core J is seated in the sand of the drag and its upper end engages with an inwardly-projecting lip or shoulder k on the upper part of the respective metal mold section, while its lower part engages on its outer side in a seat or recess Z in the inner edge of the lower part of said metal mold section, as shown in Figs. l, 2 and 3. The inner part of the bottom il of each metal mold section engages with the underside of the lower lug pattern g1, as shown in Fig. 6, the inner parts of its side walls 7b2 engage with the vertical opposite outer sides of the lug pattern g1 and the inner edge of its top h3 on opposite sides of the lip 7c engages with the outer edge of the pattern lug gl on opposite sides of the groove therein, as shown in Figs. 4 and 6. v

The metal mold sections l and the cores J for forming the cavities of the lower lugs of the journal box are preferably held in their proper position relatively to the bodypattern Gr while making the mold by means of clamps consisting of rods m extending across the underside of the body pattern and the metal mold sections and provided at their ends with hooks a which engage with the outer sides of the metal mold sections, as shown in Figs. l and 4. These clamps remain in the drag, as shown in Figs. l and 3, when the bodypattern is withdrawn preparatory to inserting the main core C.

In making this mold the body pattern A is placed in the drag of the flask while these parts are bottom side up and then the sand of the drag is filled in around the lower part of the body pattern and its upper bolt lugs g. The metal mold sections in an inverted position are then applied to the body pattern and held thereon by the clamps m, n, and the dry sand cores J forming the openings of the lower bolt lugs are placed between the metal mold sections and the body pattern.

During the molding operation inward displacement of each metal mold section is prevented by engagement of the inner edges of its upper and lower parts with the outer side of the lower core and the adjacent outer side of the lug pattern g1, as shown in Figs. 4 and 6, outward displacement of the metal section is prevented by the clamps, and lengthwise displacement of the same is prevented by engagement of its side walls with the outer sides of the pattern lug g1, thereby holding the metal mold sections securely in place during the operation of making the mold. The filling in of the sand of the drag is now com pleted, then the latter is turned right side up and the cope is formed. After separating the cope and drag the body pattern together with the integral upper lug patterns g and partial lower lugpatterns g1 is next withdrawn upwardly from the drag leaving the metal mold sections l and lower lug cores J in the drag and then the cope is restored, thereby completing the mold ready for casting. The metal poured through the sprue o 'fills the mold cavities for the body and upper lugs which are formed between the sand of the drag and cope and the main core and also fills the cavities for the lower lugs in the metal mold sections, thereby producing a journal box having upper and lower perforated lugs on its body. The metal mold sections do not adhere to the casting but are free to be detached from the latter when the flask is open and may be used repeatedly as parts of molds for producing further journal boxes of this character. This means of forming the mold cavities of the lower lugs in molds for journal boxes is very simple, it enables the molds to be made better and quicker and without liability of spoiling the molds and requires only one small dry sand core of simple form for each lower lug, thereby effecting a considerable saving in the cost of making the molds as compared with the methods heretofore in use,

Although the mold sections containing the cavities for the lower lugs of the journal box body are made of metal any chilling effect which they produce on the casting is wholly immaterial as they are not designed to chill the casting but are intended solely to form parts of the improved mold and reduce the cost of making the same.

l. claim as my invention:

l. A mold for casting an article having a body and a perforated projection on the body, comprising a main moldqneinber containing the cavity in which the body of said article is cast, a core for producingr the opening in said perforated projection, and an aux iliary mold-member containing the cavity in which said projection is cast and having a lip or shoulder engaging with oneend of said core.

2. A mold for casting an article having a body and a perforated projection on the body, comprising a main mold-member containing the cavity in which the body of said article is cast, a core for producing the opening in said perforated projection, and an auxiliary mold-member containing the cavity in i which said projection is cast and having a lip or shoulder on one part which engages with one end of said core and a recess in another part which receives the side of said core.

3. A mold for casting an article having a body and a perforated projection on the body, comprising a main mold-member containing the cavity in which the body of said article is cast, a core for producing the opening in said perforated projection., an auxiliary mold-member containing the cavity in which said projection is cast and having a lip or shoulder on one part which engages with one end of said core, a recess in another part which receives the side of said core, and a clarnp for holding the auxiliary-mold-inem-v ber 1n place. V

4. A mold for casting a journal boX having a body, upper perforated lugs projecting laterally from opposite sides ofthe upper part of the body and lower perforated lugs projecting laterally from opposite sides of the lower part of the body, comprising green sand mold-members containing the cavity A in which the body, the upper lugs and one part of the lower lugs areV cast7 dry sand cores which form the openings in the lower lugs, and metal mold members containing the cavities in Which another part of the lower lugs are cast and each of which is provided on its upper art with a lip or shoulder engaging with t e upper end of the respectlve core and on its lower part with a recess which receives the lower outer side of the respective THEO. L. Por?, ANNA HEIGIs.

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