US721831A

US721831A - Molder's flask.

Info

Publication number: US721831A
Application number: US13179302A
Authority: US
Inventors: Charles Phelps
Original assignee: Individual
Current assignee: Individual
Priority date: 1902-11-17
Filing date: 1902-11-17
Publication date: 1903-03-03
Anticipated expiration: 1920-03-03

Description

PATENTED MAR. s, 1903.

0. PHELPS, MOLDERS PLASK.

APPLICATION 111 111) NOV. 17, 1902.

N0 MODEL.

ails PETERS c0. P HUTO-UTNO.; wAsN UNITED STATES PATENT OFFICE.

CHARLES PHELPS, OF OSKALOOSA, IOWA.

MOLDERS FLASK.

SPECIFICATION forming part of Letters Patent No. 721,831, dated March 3, 1903.

Application filed November 1'7, 1902. flerial No. 131,793. (No model.)

To all whom it may concern:

Be it known that I, CHARLES PHELPS, acitizen of the United States, residing at Oskaloosa, in the county of Mahaska and State of Iowa, have invented certain new and useful Improvements in Molders Flasks, of which the following is a specification.

The objects of myinvention are to provide a molders flask of simple, durable, and inexpensive construction, in which both the cope and the drag members are composed of sheetmetal sides, having formed therein outwardlyprojecting longitudinal ribs, widest at their outer ends and tapering inwardly toward their inner ends, and cast-metal end pieces adjustable longitudinally of the side pieces and detachable, so that a foundry may be equipped with a comparatively small number of side and end pieces of different lengths and from these pieces flasks may'be formed of substantially any size required, and in addition to this the end pieces of a flask may be adjusted in the sides to substantially fit the patterns to be cast, and hence a minimum amount of sand may be used and the time and labor required for packing and handling sand may be minimized.

My object is, further, to provide side pieces for flasks of this class in which the grooves formed by the on twardly-projectin g ribs serve to retain sand inthe flask members and the ribs themselves serve as handles by which the flask members may be readily grasped and moved about.

A further object is to provide a cope member so arranged that sand-supporting partitions may be detachably connected therewith and adjusted therein in such manner as to support the sand, and thus be capable of assuming such positions as to avoid the patterns in the sand, and, further, to provide sheet-metal side pieces for flask-sections so shaped as to resist the strains and pressure to which they are ordinarily subjected in molding.

My invention consists in certain details in the construction, arrangement, and combination of the various parts of the device whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claims, and illustrated in the accompanying drawings, in which Figure 1 shows in perspective my complete flask ready for use. Fig. 2 shows in perspective one of the end pieces, and Fig. 3 shows in perspective one of the sheet-metal side pieces.

Referring to the accompanying drawings, I shall first describe the side pieces. Each side piece is made of sheet metal, with its edges 10 turned outwardly and then toward the longitudiual center to add strength to the edges. At or near the central portion of the side piece alongitudinal outwardly-projecting rib 11 is formed, the top and bottom edges of the rib converging toward the inner surface of the side piece, thus forming on the inner face of the side piece a longitudinal groove widest at its outer end and materially strengthening the side piece against such pressure as would tend to bulge it outwardly at its central portion. Formed in each side piece is a series of openings 12 for purposes hereinafter made clear.

The end pieces are preferably made of cast metal and the body portions thereof are indicated by the numeral 13. Each end piece is provided with an outwardly-projecting lug 14:, having a vertical opening 15 therein. At each end of the end piece is a narrow neck 16, widening gradually toward its outer end, and on the outer end thereof is a flat headpiece 17, arranged at right'angles to the end piece and of a size capable of entering the widest portion of the groove in the side piece. Each of these heads 17 is provided with an opening 18 for purposes hereinafter made clear.

The numeral 19 is used to indicate sandsupporting bars, their under portions being arched at 20 and their ends provided with projections 21, designed to enter the grooves in the side pieces and to be capable of slid- In practical use the parts are assembled as follows: The operator first selects four side pieces of the same length and as nearly as possible of the length required for the particular patterns to be cast. Then four end pieces are selected of about the width required for the pattern to be cast. Then a number of sand-supporting bars are placed with their ends 21 in the grooves of the side pieces of the cope member. Then the ends are placed in the grooves of the side pieces and moved to position where they will make a flask of the size desired. Then pins 22 are passed through the nearest ones of the rows of the openings 12 and through the openings 18 of the end pieces. The heads 17 on the end pieces will always hold the side pieces exactly at right angles to the end pieces, so that the flask will always be in the form of a perfect parallelogram. The sand-supporting bars may easily be moved longitudinally, so that they will not in any way interfere with the patterns, and the arched portions thereof serve to receive shallow patterns, so that the sandsupporting bars may be placed directly above the shallow portions of the patterns without touching them. If the flask members have been prepared for casting, they may be securely connected by the pins 23,

and the cope member may readily be handled by the operator grasping the outwardlyprojecting ribs 11. When not in use, the parts may be quickly and easily separated and the parts being approximately flat will occupy a very small space when properly stacked, thus avoiding the necessity of maintaining large flask sheds or yards in connection with a foundry.

Having thus described my invention, what I claim, and desire to secure by Letters Patent of the United States therefor, is

1. An improved molders flask, comprising side pieces having on their inner faces longitudinal grooves narrowest at their inner surfaces and end pieces having at their ends narrow necks to enter the narrow portions of the grooves, and enlarged heads to fit into the larger portions of the grooves, for the purposes stated.

2. An improved molders flask, comprising side pieces having longitudinal grooves on their inner faces and longitudinal ribs on their outer faces, and end pieces entering said grooves.

3. An improved molders flask, comprising side pieces made of sheet metal, the longitudinal central portions thereof shaped to form a longitudinal rib on the outer surface and a longitudinal groove on the inner surface, said rib and groove being widest at their outer ends and tapering toward their inner ends and end pieces having narrow necks near their ends and enlarged heads beyond the narrow necks, said heads and necks entering said grooves and necks.

4. An improved molders flask, comprising side pieces made of sheet metal, the longitudinal central portions thereof shaped to form a longitudinal rib on the outer surface and a longitudinal groove on the inner surface, said rib and groove being widest at their outer ends and tapering toward their inner ends, and end pieces having narrow necks near their ends and enlarged heads beyond the narrow necks, said heads and necks entering said grooves and necks, and a series of sand-supporting bars with their ends inserted in the grooves of one of the flask members and detachably and adjustably connected therewith.

5. An improved molders flask, comprising cope and drag sections each composed of two side pieces having longitudinal dovetailed grooves on their inner faces and two end pieces having dovetailed ends to enter said grooves, and means for detachably securing said end pieces in position in the side pieces.

6. An improved molders flask, comprising cope and drag sections each composed of two side pieces having longitudinal dovetailed grooves on their inner faces and two end pieces having dovetailed ends to enter said grooves, and means for detachably and adjustably securing said end pieces in position in the side pieces.

7. In an improved molders flask, a cope member composed of two side pieces having longitudinal dovetailed grooves on their inner faces, two end pieces having dovetailed ends to enter said grooves and a number of sand-supporting partitions having dovetailed ends to enter the grooves, for the purposes stated.

8. An improved molders flask, comprising cope and drag members, each composed of two sheet-metal side pieces shaped to provide a longitudinal dovetailed groove on the inner face of each and an outwardly-projecting rib on the outer face of each, said rib being provided with pin-openings and two end pieces having dovetailed heads to enter the grooves, each head being provided with a pin-opening, pins to pass through the openings in the side pieces and through the openings in the head to detachably and adjustably connect the heads with the side pieces, perforated lugs on the end pieces to receive connecting-pins, and sand'supporting bars having dovetailed ends to enter the grooves in the cope member, arranged and combined substantially in the manner set forth and for the purposes stated.

CHARLES PHELPS.

\Vitnesses:

JOHN M. IIERRON, ANNA PHELPS.