US1736366A - Shockless shake-out bail for molds - Google Patents

Description

NOV- 19, 1,929- J. T. RAMSDEN- 1,736,366

SHOCKLESS SHAKE-OUT BAIL FOR MOLDS Nov. 19, 1929. l J. T. RAMSDEN 1,736,365

SHOCKLESS SHAKE-OUT BAIL FOR MOLDS Filed May 22, 192e 2 `Smets-sheerI 2 @y www@ V' ,Sk/MW Patented Nov. 19, 1929 UNITED STATES PATENT oFFIcE JOHN T. RAMSDEN, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOB IO THE TABOR MANUFACTURING COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORA- TION 0F PENNSYLVANIA SHOCKLESS SIIAKE-OUT BAIL FOR MOLDS Application filed May 22,

The present invention relates to improvements in shake-out bails used in connection with multiple molding machines for shaking sand out of the stack of molds or flasks after the castings have been poured. One objection to shake-out bails with which I am familiar is that they may not be suspended from an overhead crane because the vibration crystallizes the crane hooks and chains.

The principal object of the present invention is to provide a shockless shake-out bail in the sense that no objectionable vibrations set up by the vibrator employed to shake out the sand are transmitted to the yoke so that the yoke can be suspended from an overhead crane or the like. Another object of the invention is to provide a convenient and reliable shake-out bail of the character indicated.

Other objects of the invention will appear from the following description, and the invention, generally stated, may be said to com* prise a shake-out bail for a stack of flasks including a yoke having suspension means, tension rods freely slidable through the yoke and having lugs, vibrators on the rods, springs between the lugs and yoke for supporting the rods and opposing transmission of vibration to the yoke, and feet at the ends of the rods for engaging the bottom flask.

The invention also comprises the improvements to be presently described and finally claimed.

In the following description reference will be made to the accompanying drawings forming part hereof, illustrating a shake-out bail embodying features of the invention, and in which Figure 1 is a front elevational view of a shake-out bail embodying features of the invention and showing a stack of flasks or molds supported thereby.

Fig.- 2 is a sectional view taken on the line 2-2 of Fig. 1.

Fig. 3 is an edge View of one of the feet, and

Fig. 4 is a top or plan view of the same.

Referring to the drawings 1 is a yoke having suspension means 2 by which it can be suspended from a crane, hoist or the like. The

1928. Serial No. 279,795.

on the upper ends of the rods 4. 7 indicates springs interposed between the lugs and yoke for supporting the rods and opposing transmission of vibration from the rods to the yoke. As shown the springs are seated on the inclined bearings 8 so as to give the rods 4 .a tendency tomove towards each other at their lower ends. At the lower ends of the rods ythere are feet 8, and they are shown as claw feet so that the claws 9 may engage the corners of the bottom flask 10. The feet 8 are shown as having upwardly inclined surfaces 11 which engage with downwardly inclined bearing surfaces on the under side of the lugs 19. of the flask 10. The purpose of the inclined bearing surfaces is to insure engagement of the feet with the flask.

The air line for the vibrators is shown at 13, and it includes the end valve 14 and the flexible connections 15. 16 is a means for lubricating the vibrators.

Normally the lower ends of the rods are spaced apart and for use they are swung toward each other under the ends of the bottoni flask of the stack. The yoke is then lifted by means of the eye 2 carrying with it the stack of flasks, and when the vibrators are started the liasks are freed from sand but the springs 7 prevent transmission of vibration to the yoke. n

It will be obvious to those skilled in the art to which the invention relates that modifications may be made in details of construction and arrangement and matters of mere form' without departing from the spirit of the invention which is not limited to such matters or otherwise than the prior art and the appended claims may require.

I claim:

1. A shockless shake-out bail for a stack of flasks comprising a yoke having suspension means, tension rods slidable through the yoke and having lugs, vibrators operatively connected with the rods, springs between the lugs and yoke for supporting the rods and opposing transmission of vibration to the yoke, and feet at the ends of the rods for engaging the bottom flask.

2. A shockless shake-out bail for a stack of flasks comprising a yoke havinggr suspension means, tension rods slidable through the yoke and having lugs, vibrators operatively connected with the rods, springs between the lugs and yoke for supporting the rods and opposing transmission of vibration to the yoke, feet at the ends of the rods for engaging the bottom flask, and air connections on the yoke for the vibrators.

3. A shockless shake-out bail for a stack of flasks comprising a yoke having suspension means and inclined bearings, tension rods freely slidable through the yoke and having;` lugs, vibrators on the rods, springs between the lugs and inclined bearings, and feet at the ends of the rods having inclined faces for engagement With complemental inclined faces provided on the bottom flask.

1l. A shockless shake-out bail for a stack of flasks comprising a yoke having suspension means and inclined bearings, tension rods freely slidable through the yoke and having lugs, vibrators on the rods, springs between the lugs and inclined bearings, and claw feet having inclined faces for engag ing inclined faces provided on the bottom flask and also adapted to engage the corners of that flask.

JOHN T. RAMSDEN.

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