US1291607A - Molding apparatus. - Google Patents

Description

Patented Jan. 14, 1919.

3 SHEETS-SHEET l.

Ik dZ/z/ Z211 B. A. NELSON.

MOLDING APPARATUS. APPLICATION man JULY 2. i911. 1,291,607.

N 11 la Urli B. A. NELSON.

MOLDING APPARATUS.

APPLlcAUoN FILED 1u|.Y 2. 1911.

Patented J an. 14, 1919.

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B. A. NELSON.

MOLDING APPARATUS.

xPPLlcATmN man JULY 2, 1917.

1,291,607. Patented Jan. 14, 1919.

3 SHEETS-SHEET 3.

BROR A. NELSON, OF CHICAGO, ILLINOIS.

MOLDING APPARATUS.

Specification of Letters Patent.

Patented J an. 14, 1919.

Application led July 2, 1917. Serial No. 178.130.

To all 'whom t may concern.'

Be it known that I, Brion A. NELSON, a citizen of the United States, and a resident of the city of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Molding Apparatus, of which the following is a speciiication.

My invention relates to an improved molding apparatus, and has for its object tlie provision of an improved molding apparatus by means of which simple elongated articles, such as window sash weights, mayT be molded in great quantities and with great expedition and economy.

The invention consists in the method and apparatus hereinafter described and claimed.

The invention Will be Ibest understood by reference to the accompanying drawings, forming a part of this specification, and in which,

Figure l is a partial horizontal section of a molding flask employed in the invention,

Fig. 2, an end view of the same,

Fig. 3, a section taken on line 3-3 of Fi 2 Figfl, a side view of the flask,

Fig. 5, a detail view of an individual pattern employed in carrying on the invention, 6, a section taken on line 6-6 of Fig. 1,

Fig. 7, a plan view of a follow board pattern employed in the invention,

Fig. 8, a section taken on line 8--8 of Fig. 7, and U Fig. 9, a section taken on line 9-9 of Fig..7.

The preferred form'of construction for carrying on my invention, as illustrated in the drawings, comprises a suitable molding flask made up of vertical side members l0 and end members. 11, consisting of a plu rality of transverse strips or slats as indicated, said end members being adjustably secured between said side members by means of a frame 12 secured in place by means of bolts 13 taking through sets 'of bolt holes 14 by means of which the length of the flask may be varied as desired. A smooth bottom member 15, supported on legs 16, is also provided for the flask.

Coperating with the molding flask is a pattern in the form of a. follow board 17, having a plurality of partial individual pat- 18, the outer ends of the terns 18 thereon, said partial patterns 18 consisting of patterns for the halves of ordinary sash weights. The individual patterns 18 are arranged in oppositely disposed sets, staggered with relation to each other and provided at their outer ends with outwardly flaring enlargements 19, as indicated. At the inner ends the individual patterns 18 are gated together by means of a central gate 20 having individual leads 21 connecting with the individual patterns gate 20 being provided with outwardly flaring portions 22 as indicated. A central gate perforation 23 is provided for the reception of a vertical central gate member 24 arranged to rest at its bottom in a socket member 24: of ordinary core material.

Coperating with the follow board pattern 17 are a plurality of individual separate sash weight patterns 25, each provided with a removable culi' or enlargement 26 adapted to fit the imprint formed by the enlargements 19 on pattern 18. Individual gate patterns 27 are also provided to be set in the imprints formed by the gate pattern 20 of the follow board pattern 17, said individual gate patterns being provided with outwardly flaring enlargements 28 at their outer ends and with extensions or projections 29, as indicated, said projections 29 being adapted to project through suitable openings in the side members 10, said openings being provided with closure plates 30, operating between dovetail lugs 31, as shown. The uppermost opening is provided with a laterally movable closure plate 30', operating between dovetail lugs 31 as shown to facilitate removal thereof. Suitable openings are also provided in the end walls 11 closable by removable closure plates 32, operating through dovetail lugs 33, as shown.

In use, a layer of sand is placed in the flask up to the level of the rst set of openings in the side and end walls, and an imprint made in said sand by means of the follow board pattern 17, the vertical gate member 24 having previously been placed in position and the follow board 17 passed downwardly thereover. Suiiicient sand should be placed in the flask to cause the imprint thus formed to come to a level with the openings in the side and end walls, so that the imprints Will register with said openings.

Then the follow board is removed and said partial individual sash weight patterns and individual gate patterns 27 are placed in the imprints thus formed. Then a new layer of sand is sifted into the flask and compressed about the individual patterns therein, the new layer of sand bringing the level of the flask up to the level of the next set of holes in the sides and ends of the flask. rlhen the process is repeated, the follow board 17, however, being reversed in position so as to cause the imprints formed to stagger with the patterns in the layer below, and a new set of individual patterns thus placed in the flask. The process is thus repeated, reversing the follow board pattern 17 at each step until the entire flask is built up with a plurality of layers of individual patterns therein, and a vertical gate extending Ithrough the flask. Then the individual patterns are removed through the openings in the side and endI walls provided for this purpose, the removable cutis 26 on the patterns 25 and the projections 25 and 29 facilitating such removal. At this time also the vertical gate pattern 24 is also removed. |lhen the outer ends of the spaces left by the removal of the patterns are plugged with core members 34: and 35, the core members 34e simply closing the outer ends of the gate channels and the core members 35 being themselves cored out, as indicated, to form the eyes on the ends of the sash weights. The closure plates 30, 30 and 32 are then placed in position when vthe flask is ready for pouring. rlhe metal is poured into the gate channel left by the removal of the gate member .24 and flows freely and readily out through all of the individual sash weight molds or spaces, thus forming a large number of sash weights at each pouring operation and greatly expediting and economizing the production. l

While l have illustrated and described the preferred method and apparatus for carrying my invention into effect, these are capable of variation and modiiication without departingl from the spirit of the invention. I, therefore, do not wish to be limited to the precise details set forth, but desire to avail myself of such variations and modifications as come within the scope of the appended claims.

Having described my invention what I claim as new and desire to secure by Letters Patent is:

1. A molding apparatus comprising a flask; a pattern consisting of a follow board adapted to be inserted in said flask and having a plurality of partial patterns thereon; and individual patterns corresponding with patterns, substantially as described.

2. A molding apparatus comprising a flask; a pattern consisting of a follow board adapted to be inserted in said flask and having a plurality of partial patterns thereon, said partial patterns being arranged in oppositely disposed staggered sets gated together at the center; and individual patterns corresponding to said partial patterns, substantially as described.

3. A molding apparatus comprising a flask; a pattern consisting of a follow board adapted to be inserted in said flask and having a plurality of' partial patterns thereon, there being a central gate perforation in said follow board; and individual patterns corresponding to said partial patterns, substantially as described.

il. A molding apparatus comprising a flask; a pattern consisting of a follow board adapted to be inserted in said flask and having a plurality of partial patterns thereon, said partial patterns being arranged in oppositely disposed staggered sets gated together at the center, there being a central gate perforation in said follow board; and individual patterns corresponding with said partial patterns, substantially as described.

5. A molding apparatus comprising a flask; a pattern consisting of a follow board adapted to be inserted in said ask and hav ing a plurality of partial patterns thereon; and individual patterns corresponding with said partial patterns, and having removable culi's or enlargements at their outer ends, there being suitable openings in said flask to permit of the removal of said individual patterns and ends, substantially as described.

6. A molding apparatus comprising a flask; a pattern consisting of a follow board adapted to be inserted in said flask and having a plurality of partial*patterns-thereon, said partial patterns being arranged in oppositely disposed staggered sets gated together at the center; and individual patterns corresponding to said partial patterns, 'and having removable cuiis or enlargements at their outer ends, there being suitable openings in said flask to permit of the removal of said individual patterns and cuffs, substantially as described.

7. A molding apparatus comprising a flask; a pattern consisting of a follow board adapted to be inserted in said flask and having a plurality of partial ypatterns thereon,

'there being a central gate perforation in said follow board; and individual patterns corresponding to said partial patterns, and having removable cuffs or enlargements at their ,120 outer ends, there being suitable openings in said flask to permit of the removal of said individual patterns and cuffs, substantially as described. y

8. A molding apparatus comprising a ask; a pattern consisting of a follow board adapted to be inserted in said flask and having a plurality of partial patterns thereon, said partial patterns being arranged in oppositely disposed staggered sets gated together at the center, there being a central gate perforation in said follow board; and individual patterns corresponding with said partial patterns, and having removable cuffs or enlargements at their outer ends, there being suitable openings in said iiask to permit of the removal of said individual patterns and cuffs, substantially as described.

9. A molding apparatus comprising a flask having centrally perforated sides and ends adjustable between said sides, said ends being also provided with sets of perforations; a follow board adapted to be inserted within said flask and having a plurality of partial patterns thereon; removable plates arranged on said sides and ends to close said openings; and individual patterns corresponding to said partial patterns, substantially as described.

10. A molding apparatus comprising a flask consisting of centrally perforated sides and ends adjustable between said sides, said ends being provided with sets of perforations; a pattern consisting of a follow board adapted to be inserted in said flask and having a plurality of partial patterns thereon, said partial patterns being arranged in oppositely disposed staggered sets gated together at the center, there being a central gate perforation in said follow board; removable plates on said sides and ends for closing the openings therein; individual patterns corresponding to said partial patterns; gate patterns corresponding to the partial gates; and a vertical gate pattern corresponding with the perforation in said follow board, substantially as described.

In testimony whereof I have signed my name to this specication in the presence of two subscribing witnesses.

BROR A. NELSON.

Witnesses:

ARTHUR A. OLSON, B. G. RICHARDS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner o! Patenti, Washington, D. 0.

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