US861318A - Mold. - Google Patents

Description

PATBNTED JULY 30, 1907.

I No 861,318.

I. A. RATHBONE.

MOLD.

APPLICATION nun man. 5. 1905.

2 sums-51mm 1.

FIEZI. FIE.4.

' IHVEr-ITO/e, JOH/fl- A RATHBOHEL- No. 861,318. PATENTED JULYBO, 1.907.

' J. A. RATHBONE.

' MOLD. APPLIUATIOH I'I'LED SEPTfB, 1905.

2 SHEETS- 831B! 2.

FIEE. I

v INVENTOE JaH/y A EA THBONE' vertical cross section through a series mold embodying ends.

-molds by compressing the sand within separate mold faces forming complementary portions of the mold chaplets were merely embedded in the sand, deriving 40 ,danger of breaking down the mold. I have therefore JOHN A. RATHBONEyOF UTICA, NEW YORK.

MOLD.

' Specification of Letters Patent.

Patented July 30, 1907.

Application filed September 5,1905. Serial No. 277,073.

To all whom it may concern:

Be it known that I, J OHN A. RATHBONE, residing at-Utica, in the county of Oneida and State of New York, a citizen of the United States, have invented i certain new and useful Improtvements in Molds, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention relates to molds, being more particularly designed for use in connection with multiple or series molds and the invention consists in the construction as hereinafter set forth.

In the drawings, Figure 1 is a vertical section through a mold to which my improvements are applied. Fig. 2 is a similar view illustrating a modified construction of chaplet; Figs. 3 and 4 are d btached views, showing other modifications of the chaplet; Fig. 5'is a cross section of the bar F and .brackets G. Fig. 6 is a my invention. e v With the system of molding in which multiple or series molds are employed, it is customary to form the flasks bet-ween opposed pattern faces,'said pattern cavities. Thuswhen a plurality of molds formed in this manner are arranged in series the sand in each flask will form the molding faces of adjacent cavities, all of these cavities being connected by a commonsprue which extends from top to bottom of the series. It is the particular object of the present invention to adapt the system of molds above described for use with cored work and to this end chaplets are embedded in the sand which is compressed between the opposed pattern faces and are anchored and positioned during the compression of the sand. Inasmuch as the sand in the intermediate flasks cannot be directly supported from beneath on account of the intervening mold cavities, it is obvious that if the core supporting all-of their support therefrom, there would be great avoided this difiiculty by providing support for the embedded chaplets independent of the sand in'which they are placed. This may be accomplished in two ways: first, by placing cross bars in the mold flasks against which the inner ends of the chaplet abuts, or second, by extending the chaplets completely through the sand and into adjacent mold cavity whereby these chapletain connection with the core which they position, will form a continuous vertical series the intermediate members of which are supported from the Indetail A is one of a series of like moldflasks. The mold cavities are formed in sand within this flask by arranging the latter in relation to upper and lower sand frames B and B, upon a suitable molding press (not shown.) C is the lower pattern member and D the upper pattern member which are adapted in the operation'of the press to be moved oppositely so as to compress the loose sand within the flask and the frames B and B until the position is assumed illustrated inFig. 1. As shown in this figure the whole body of sand is compressed to be within the mold flask A and the opposed pattern faces project into the sand to form mold cavities of a desired form.

Simultaneouslyjwith [the operation of compressing the sand, the core supporting chaplets are embedded and'positioned therein in the following manner: A chaplet such as E is placed in position within the flask before the sand is filled therein, being temporarily held in position either by engagement with an aperture in the pattern face or with a guide in the cross bar within the flask. As shown in Fig. l the flask isprovided with a central cross bar F and chaplets E and E- are arranged above and below this cross bar, the upper one being engaged with a guide G upon said bar'and the lower chaplet engaging the aperture H on the lower pattern face. I and I are plates respectively for the upper and lower pattern-members and J and J are chairs or projecting lugs uponthe plates,'which are in alinement with the chaplets E and E.

With the construction just described, after the chaplets have been placed as just stated and the sand is filled into the mold flask and sand frames, pressure is applied to oppositely move the pattern members CY and D together with the blocks J and J. compress the sand as has been described but will also cause the chair, or lug, J, to ,press the ends of the chaplet oppositely against the cross bar F. The result will be 'that these chaplets will thus be brought into firm contact with said cross bar and if either chaplet is longer than necessarj it will be upset or contracted inv length so as to project just the proper distance into the mold cavity when the patterns are removed.

Fig. 2 illustrates a chaplet arranged in the flask which is unprovided with the cross bar E. This chaplet, E is therefore of sutficient length to extend completely through the sand and into the opposite mold cavities. It isfirst positioned by engagement with an aperture H? in .the lower pattern face and is held in alinement with an aperture H in the upper pattern face; the lower end also rests upon the lower chair J on the plate I and the upper end is ina'linement with plate. Thus when the sand is compressed the chaplet will be firmly embedded therein and as the upper pattern descends the end of the chaplet will enter the aperture H and will then be compressed between the chairs .T and .I so as to be upset and reduced to the required length. To permit of this upsetting operation the chaplet employed may be formed in various ways. In the first place it may 'be formed of sufliciently yielding ina-- terial, such as soft iron, to permit of compression.

This will not only the chair I on upper Another construction that may be employed is such as illustrated in Fig. 3, in which the chaplet is composed of two'sections a and b, respectively provided with a tapering recess c'and a tapering pin 0? engaging therewith. With this construction the end pressure will cause a slight further engagement of the tapering pin with the socket which will contract the length of the portions k thereof better than with the construction illustrated in Fig. 2.

With all the various constructions described, the method of positioning and adjusting the length of the chaplet is substantially the same. The chaplct is held from endwise displacement in the sand either byproviding it with the central lateral projection mm by, reason of the lateral projecting portions of the'chaplets as in the construction illustrated in Figs. 2 and 4.

What I claim as my'invention is:-

1. The combination with a mold having a plurality of mold cavities, of a chaplet embedded in the sand therebetween having its opposite ends extending into adjacent moldcavities. 2. A multiple mold comprising a series of superposed mold cavities, cores in adjacent'mold cavities and a com- .mon chaplet connecting said cores embedded in the sand 3 between cavities.

- 3. A multiple mold comprisinga series of superposed mold cavities, cores'in said cavities and a series of alined chapiets embedded in the sand between cavities and extending continuously from the bottom to the top of the mold.' 1

4. The combination with a mold having a plurality of. mold cavities, of a chaplet having its opposite ends extendlngiinto adjacent mold cavities, said chaplet being centrally anchored within the sand to prevent endwise displacement.

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

JOHN A. RATHBONE.

Witnesses:

JAMES P. Benny, EDWARD D. AUr/r.

Images