US1447786A - Foundry flask - Google Patents

Description

G. E. JACKSON. FOUNDRY FLASK.

FILED MAY 2?,

Mar. 6,1923.

Patented Mar. 6, 1923.

urrs srrss GEORGE E. JACKSON, OF SPRINGFIELD, OHIO, ASSIGNOR TO THE 13. 8a 3'. MANUFAC- TURING COMPANY, OF SPRINGFIELD, OHIO, A FIRM.

FOUNDRY FLASK.

Application filed May 27, 1922. Serial No. 564,063.

To all whom it may concern:

Be it known that I, GEORGE E. JAoKso-N, a citizen of the United States, residing at Springfield, in the county of Clark and State 5 of Ohio, have invented certain new and useful Improvements in Foundry Flasks, of which the following is a specification, ref- I erence being had to the accompanying draw- Considerable difliculty arises when placing the upper half of a foundry flask upon the lower half, to cause the two halves to register, so as to bring the impressions in the sand into registration. There are devices for guiding the upper half of the flask to a position in register with the lower half, but the majority of the flasks that are in use are devoid of any practical or efficient guiding means. In fact the upper half of most of the flasks is placed in register with the lower half by hand with the naked eye.

It is, therefore, the purpose of the present invention to provide means whereby the upper half of the flask is guided into register with the lower half. In fact the guiding action of the upper half toward the lower half begins long before the upper half of the flask reaches the lower half, and since the upper half is being guided, as it is lowered toward the lower half, the two halves of the flask register with a nicety, so that the impressions in the sand, will register, and thereby insure a better finished casting.

Still another purpose is the provision of means for adjusting the guiding members of the upper half of the flask, with relation to the guiding members of the lower half, of the flask, thereby causing the upper half of the flask tolower toward and register with the lower half of the flask. In other words after a foundry flask has been extensively used, there may be a slight vibration in the movement of the upper half of the flask, when it is being lowered, therefore in order to compensate for this vibration or lost motion, the guiding means of the upper half of the flask may be adjusted relatively to the guiding means of the lower half.

A still further purpose is the provision of such guiding means, wherein one of the guides at its upper portion has its walls diverged, to insure the reception of the guiding means of the movable or upper half of the flask.

It is to he understood that the particulars herein given are in no way limitative and that while still keeping within the scope of the invention, any desired modifications of detail and desired proportions may be made in the apparatus according to circumstances.

The invention comprises further features and combination of parts, as will be hereinafter set forth, shown in the drawings and claimed.

In the drawings 2- Figure 1 is a view in elevation of a foundry flask of a conventional construction, showing the guiding means upon the opposite ends, one end of the flask and the guiding means being in section;

Figure 2 is an enlarged detail sectional view of one end or side of the flask, showing the guiding means; the upper half of the flask being raised, or in the act of lowering, so that the upper half may register with the lower half;

Figure 3 is a horizontal sectional view on line 3-3 of Figure 1, showing the two guiding elements in cooperation; Figure 4: is an enlarged detail perspective view of the guiding means carried in a hood, which in turn is connected to and carried by the upper half of the flask;

Figure 5 is an enlarged detail perspective view of the guiding means of the lower half of the flask.

Referring to the drawings 1 and 2 designate the upper and lower sections or halves of a foundry flask, which may be any proportions and constructed of any suitable material. It is well understood that the two halves of a flask receive suitable molding sand, for the purpose of molding castings, and it is well known that if the molder is not very careful, there is liability of the upper half of the flask being lowered to a position, where it would be out of register with the lower half. It is also well known that if the molder does not take considerable care,

the sand in the upper half of the flask is very apt to be ruptured, which would cause the production of a deformed casting, provided the upper half should be lowered be fore the rupture should be discovered. When the sand becomes ruptured in the upper half of the flask, it necessitates inverting the upper half again, and touching up the impression in the sand, so as to insure its proper formation, when again lowered.

In the present case, in order to guide the upper half of the flask, the lower half, at

its opposite ends hassecured thereto by means of suitable screws, bolts or the like 3, a plate 4, the openings 5 thereof receive the screws or bolts. Cast or otherwise integrally constructed with the plate 4 is an upstanding arm or projection 6 provided with a guiding channel 7. The upper portions of the side walls of the guiding channel are diverged outwardly, and are curved oil. at their extreme edges, as shown at 8, acting to guide or deflect the guiding wheels 9, which are carried by the upper section or half of the flask into the guiding channels, to insure the upper half or section of the flask to lower in register with the lower half.

Carried by and secured by means of screws, bolts or the like 10 to the opposite ends of the upper half or section of the flask are hoods 11. These hoods are in the form of hollow castings, which have securing flanges 12, whereby the hoods may be secured to the upper section or half. The lower margins of both hoods are provided with laterally extending flanges 13, and carried by said flanges are'screws or bolts 14, which extend upwardly.

The guiding wheels (the perimeters of which are V-shaped in cross section) are journaled upon pins or shafts 15,. which are mounted in bearings of the upper and lower ends of the arms 16 of the castings 17. These castings 17 have lateral extensions or arms 18, which are provided with slots 19, for the reception of said bolts or screws 14. In fact the projections or arms 18 extend through openings 21 in the lower portions of the walls of the hoods, that is to say, immediately adjacent the flanges 13. Since the screws or bolts 14 pass through the slots 19, and are carried by the flanges 13, it is obvious that by loosening the nuts 22 upon the bolts, the castings 17 may be adjusted outwardly. The castings 'may be reversely adjusted or moved inwardly, to insure a greater friction between the guiding member, to facilitate the act of properly guiding the upper half or sect-ion 01 the flask toward and in register with the lower half. The castings 17 together with their guiding wheels are located upon the opposite ends of the upper half or section of the flask, and as near as possible in the same positions, so that when the guiding wheels 9 are in the act of engaging the groove or guide channel 7, the upper section or half of the flask will lower in proper registration with the lower'half.

The invention having been set forth, what is claimed is 1. In a foundry flask, the combination with the upper and lower halves thereof, of guiding arms having channels mounted upon the opposite ends of the lower half of the flask, guides movably mounted upon the opposite ends of the upper half of the flask and adapted to revolubly engage the channels of the guides of the lower half, and means for adjusting the movable guides toward and from the channels.

2. A foundry flask, comprising upper :and lower sections, upright guides carried by the opposite ends of the lower section, hoods mounted upon the opposite ends of the upper section, and rotatable guides mounted within the hoods, and adapted for engagement with the upright guides of the lower section, whereby the upper'sect-ion may be guided into register with the lower section.

3. A foundry flask, comprising upper and lower sections, upright guides carried by the opposite endsef the lower section, hoods mounted upon the opposite ends of the upper section, and rotatable guides mounted within the hoods, and adapted for engage ment with the upright guides of the lower section, whereby the upper section may be guided into register with the lower section, the upper ends of the upright guides being diverged to permit the rotatable guides to easily enter the upright guides.

et. A foundry flask, comprising upper and lower sections, upright guides carried by the opposite ends of the lower section, hoods mounted upon the opposite end-s of the upper section, and rotatable guides mounted within the hoods, and adapted for engagement with the upright guides of the lower section, whereby the upper section may be guided into register with the lower section, and means adjustably mounting the rotatable guides on the hoods, whereby the rotatable guides may be adjusted toward and from the upright guides.

A foundry flask, comprising upper and lower sections, upright channel uidesmounted upon the opposite ends of t e lower section, and rotatable guides ,adj'ustably and operatively supported upon the opposite ends of the upper section and adapted .to enter the channels of the upright channel guides, for guiding the uppersection in register with the lower section.

6. A foundry flask, comprising upper and lower sections, upright channel guides mounted upon the opposite ends of the lower section, and rotatable guides adjustably and operatively supported upon the openter the channels, and hoods for the i'novposite ends of the upper section and adaptable guides, and adapted to receive the up- 10 ed to enter the channels of the upright chanright guides, when the upper section is nel guides, for guiding the upper section in lowered.

register with the lower section, the upper In testimony whereof I hereunto aflix my portions of the opposite walls of the chansignature.

nels of the upright guides being diverged,

for causing the movable guides to easily GEORGE E. JACKSON.

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