US1459197A - Foundry flask - Google Patents

Description

H. c. DRUMM FOUNDRY FLASK June 19, 1923.

Filed Aug. 17 1922 gvwewtoz Gm: mm

Patented June 19, 1923.

UNlTED STATES HERBERT o. DRUMM, OE C NTON, OHIO, ASSIGNOR To THE UNION METAL MANUEAO TURINGCOMPANY, OE OANTON, OHIO, A CORPORATION OF OHIO.

PATENT orat on,

FOUNDRY FLASK.

Application filed August 17, 1922. Serial No. 582,417.

To all whom it may concern:

Be it known that I, HERBERT C. DRUMM, a citizen of the United States, residing at Canton, in the county of Stark and State of Ohio, have invented a new and useful Foundry Flask, of which the following is a specification.

This invention relates to improvements in foundry flasks constructed of sheet metal and has more especial reference to a flask of this character formed of corrugated sheet metal and provided with corrugated reinforcing plates surrounding the body portion Of the flask.

The usual form of foundry flask comprises two similar sections generally known as the cope and drag, provided with means for attaching the two sections together. These flasks were commonly formed of wood, but Owing to the molten metal and burning gases, which are necessarily brought into contact with the flasks, it has been found desirable to construct the sections of the flasks of sheet metal.

Experience has proven, however, that flasks formed of sheet metal do not have the required strength and rigidity to withstand the rough usage to which, the flasks are subjected, this being especially true of larger flasks such as are used for molding heavy castings.

The objects of the invention are to provide a sheet metal foundry flask having reinforcing side plates and end plates connected to the body portion of the flask and to each other, both the body portion of the flask and the reinforcing plates being preferably provided with oppositely disposed, longitudinal corrugations for stiffening the structure and preventing warping or distortion of the flask sections in use. I

The above and other objects may be attained by constructing the flask as illustrated in the accompanying drawing, in which I Figure l is a plan view Of a flask section embodying the invention;

Fig. 2, a section on the line 2-2, Fig. 1; and

Fig. 3, a section on the line 3-8, Fig. 1.

Similar numerals refer to similar parts throughout the drawing.

Referring to the construction illustrated in the accompany drawing, the body portion 1 of the flask section is formed of one or more. sheets of metal, the adjoining ends thereof being connected together as at 2 in. any suitable and well known manner. This body portion of the section is preferably rectangular and provided with the spaced, longitudinal corrugations 3 which may be of V-shape as "illustrated and which extend inward.

The upper and lOWeI edges f th section maybe bent inwardand' outward respectively, as shown at 41 and 5,-{The section illustrated in the drawing is thelower or drag section, and it will'be understood that the upper or cope. section is of the same form, being inverted, however, when it is placed upon the drag section.

'A reinforcing sheet 6 is rivetedto each side wall of the body portion as at 7, each of these sheets being of substantially thew width of the side wall, but of considerably greater length and being preferably pro- Vided with outwardly disposed, longitudinalcorrugations 8 registering with the con rugations S of the body portion of the flask. 5 1

U-shaped reinforcing sheets 9 are connect"- ed to the end walls of the body portion as by the rivets 10, these sheets being of the same width as the sheets 6, the outturned ends 11 thereof terminating at the extremities of the side sheets 6' and being riveted thereto as at 12.

The endsheets 9 are provided with horitrated in Fig. 2, providing handles by means of which the flasks may be carried either manually or with a crane or the like.

The usual pin lugs 15 are provided at the intersecting edges of the cope and drag sections, being arranged to register with each other to receive the usual guide pin by means of which the flask sections are ordi narily connected together when in use. These pin lugs may be attached to the end walls of each section as by the rivets 16.

It will be evident from the above that a construction of reinforced sheet metal flask is provided which will withstand the rough usage to which foundry flasks are necessarily subjected, and which will not Warp or become distorted from the weight of the sand and castings placed therein inthe operation of molding, whileat the same time, the weight of the flask is not increased sufli-ciently to form an objection to the reinforcement.

'I claim: v 1. A foundryflask comprising a sheet metal body portion, reinforcing sheets connected to. the side walls thereof and reinforcing sheets connected to the endwalls'of the body portion and to said side reinforcing sheets, certain of, said reinforcing sheets being of greater length than the corresponding walls of the flask and extended outward beyond said flask walls at each end.

2. vA foundry flask comprising a sheet metal body portion, reinforcing sheetsconnected to the side walls, thereof and reinforcing sheets connected to the end walls of the body portion and to said side rein- ;forcing sheets, said side reinforcing sheets being of greater: length than thebody portion of the flask. s

3 A foundry flask comprising a sheet metal ,body portion, reinforcing sheets connected to the side walls thereof and reinforcing sheets connected to theend walls of the-body portion and to said side reinforcing sheets, said side, reinforcingsheets being of greater length than the'body portion of the fla-sk, the end portions of said side reinforcing sheets being cut away forming handles. v i

c 4. A "foundry flask comprising a sheet metal body portion, reinforcing sheets connectedto the side walls thereof and reinforcing sheets connected to the end walls of the body portion and to said side reinforcing sheets, said end reinforcing sheets having outtnrned ends.

5 A foundry flask comprising a sheet metal body portion, reinforcing sheets con-.

neotedtothe side walls thereof and reinforcing sheets connected to the end walls of the ,body portion and to said side re nforcing vsheets, said end reinforcing sheets having outturned ends cutaway to form handles.

6. A foundry flask comprising a sheet metal bodyfportion, reinforcing sheets connectedto the side walls thereofand reinforcing sheets connected to the end walls of the body portion and to said side reinforcing sheets, said side reinforcing sheets being of greater lengththan the sidewalls of the flask andtheend reinforcing sheets having outturned ends connected to the end portions ,of the side reinforcing sheets.

7. ,A foundry flask comprising a sheet metal body portion, reinforcing sheets connectedfto the sidewalls thereof and reinforcing sheetsconnected to the end walls of the body portion and to said side reinforcing sheets, said body portion and reinforcing sheets being provided with longitudinal corrugatlons.

8. A foundry flask comprising a sheet metal body portion, reinforcing sheetsconnected to the side walls thereof and reinforcing sheets connected to the end walls of the body portion and to saidside reinforcing sheets, said SlCl'IGIIIfOIClHgShBGtS belng of greater length than the body portion of the flask, said body portion and reinforcing "sheets being provided with longitudinal corrugations. v

9. A foundry flask comprising a sheet metal body portion, reinforcing sheets connected to the side walls thereof and reinforcing sheets connected to the end walls of the body portion and to said'side: reinforcing sheets, said side reinforcing sheetsbeing of greater length than the body portion of they flask, the end portions of said side reinforcing sheets being cut away forming handles, said body portion and reinforcing sheets being provided with longitudinal corrugations. I

10. A foundry flask comprising a sheet metal body portion and a sheet metal reinforcement surrounding the body portion and connected therewith and provided with: in-

tegral handle 1 portions projecting beyond dles. I i

13. A foundry flask comprising .a sheet metal body portion and asheet metal reinforcement surrounding the body portion and.

connected therewith and provided with por tions projecting beyond the extremities ,of

the body portion, the body portion and reine, forcement being provided with oppositely disposed,- longitudinal corrugations,

14, A foundry flask comprising awsheet metal body portion, reinforcing sheets con nected to the side walls thereofand rein-, forcing sheets connected tothe :end WELllS of the body portion and to said side reinforcing sheets, said end reinforcing sheets having outturned ends, said body portion and-reinforcing sheets beingprovided with longir tudinal corrugatlons. i

15. A foundryflask comprisingai sheet I metal body portion, reinforcing sheets connected to the side walls thereof and reinforcing sheets connected to the end walls of the body portion and to said side reinforcing sheets, said end reinforcingsheets having outturned ends'cut away to form handles,-'

said body portion and reinforcing sheets being provided with longitudinal corrugations.

16. A foundry flask comprising a sheet metal body portion, reinforcing sheets connected to the side walls thereof and reinforcing sheets connected to the end Walls of the body portion and to said side reinforcing sheets, said side reinforcing sheets being of greater length than the side walls of they flask and the end reinforcing sheets having outturned ends connected to the end portions of the side reinforcing, sheets, said body portion and reinforcing sheets being provided with longitudinal corrugations.

- 17. A foundry flask comprising a sheetmetal body portion and reinforcing sheets connected to the walls thereof and to each other, certain of said reinforcing sheets being of greater length than the flask walls 20 to which they are connected and extended outward beyond'said flask walls at each end.

HERBERT'C. DRUM

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