US1930682A - Core forming device - Google Patents

Description

Oct. 17, 1933. E. P. KINNE Er AL CORE FORMING DEVICE Filed Dec. 26, 1931 4 Sheets-Sheet l @Ct- 17, 1933. E. P. KINNE ET A1.

CORE FORMING DEVICE Filed Deo. 26. 1951 4 Sheets-Sheet 2 Oct. 17, 1933. E, P, KlNNE r- T AL- 1,930,682

CORE FORIIING DEVICE Filed Dec. 26, 1931 4 Sheets-Sheet 3 Z T i@ A4452; v

od. 17, 1933. E. P. Km; Er L com: Fonurn vmzvrc l' Filed nec. 26'. `1931 4 Sheets-Sheet 4 www@ a Patented Qct. 17, i933 lliitiED PATENT CORE FORBHNG DEVICE Application December 26, 1931 Serial No. 583,306

35 Claims.

The present invention relates to core tori/ning devices, and more in particular to novel means for iorining journal box cores.

Aniong the objects of the present invention is to provide a core io 1ining device adapted to be easily manipulated for forming or fashioning journal box cores, the saine including means whereby each part of the journal box may be easily and readily formed without resorting to operations.

At the present time journal box cores and the like are usually rammed by means of an air rammer, this operation requiring considerable skill on the part of the operator to produce satisfactory and uniform cores. When these cores are inade in this ina-nner, the core forming box is in an upright position and the top or iront of the same is to permit ramining. This necessitates hand Finishing of the core around the front end, this step making it very difcult to secure a true, uniform shape at this point on the core. Furth e the placing of chills at certain locations embedded in the core is also dif'cult with the present known inethod oi ramrning.

it is therefore an object of the present invention to provide novel means whereby these journal box cores may be more accurately formed at the important or crucial points.

The present invention also comprehends the idea of providing novel means for mechanically rainining the in such means in combination with the core forming device requiring less skill and less physical eiort on the part of the operator to secure a true, uniform and accurately formed core.

Still another object of the present invention is to provide a novel core forming device including core forming elements so associated and adapted to be operated in such a manner as to speed up this core forming operation, thereby increasing the output, as well as producing` a core far superior to anything made in accordance with the present well-known method of making the same.

present invention and in association with a inechanical ramming device;

Figure 2 is a view in side elevation of the embodiinent shown in Figure l of the drawings;

Figure 3 is also a View in side elevation disclosing the device in position to be swung into its discharge position;

Figure 4 is a view in side elevation showing the device in its discharge position;

Figure 5 is a top plan view showing the core forming elements in a position whereby the formed core inay be removed;

Figure 6 is a view in vertical cross section taken in the planes represented by the line 6-6 in Figure 2 oi the drawings;

Figure 'Z is a fragmentary view in vertical cross section taken in a plane represented by line 7-7 of Figure 4 of the drawings;

Figure 8 is a fragmentary view in end elevation taken in a plane represented by line 8-8 of Figure 3 of the drawings;

Figure 9 is a. fragmentary top plan view of another core forming device rnade in accordance with the present invention;

Figure 10 is a fragmentary w in side elevation of the device shown in Figure 8 of the drawings, with parts broken away to disclose the construction inore in detail; and

Figure l1 is a fragmentary view in side elevation similar to Figure 10 of the drawings, showing the core iorrrinrr box in an open position.

Referring new Lore in detail to the drawings, a core forming device rnade in accordance with the presentinvention is shown as comprising a base 2 and a core box This core forming box 4 includes the relatively movable core forming elements 6 and 8 adapted to form a major portion of the journal box core it, and a core forming element l2 adapted to close the open end of the core forming elements 6 and 8. 95

The core forming element 12 is formed with a central lug or ear 14 which is apertured to receive a bolt 16 secured in the ears 18 and 20 provided on the base 2, whereby the core forming box as a whole may be moved from the ramming position shown in Figure 2 of the drawings to its upright or discharging position as shown in Figure 4 of the drawings. The central lug or ear 14 of the core forming eiernentlZ is further provided with an extending part 22 apertured to 105 receive a bolt 24 arranged to extend normal to the core forming element l2. The core forming elements 6 and 8 are provided with the spaced hinges or lugs 26 and 28, respectively, these hinges or lugs being formed integral with the body por- 110 tion of these core forming elements, the same being apertured adjacent their ends for receiving the bolt 24 and for swingably securing these core forming elements thereto.

In Figure 2 of the drawings, the core forming box is shown in its ramining position, and at this time, the core forming elements 6 and 8 are swung together and the hinges 26 and 2S thereof are adapted to be received in the depressed portion 30 oi the base 2. When these elements in this position, these core forming elements are maintained in their closed position by means of the vedge surfaces 32 and 34 provided on these hinges or lugs which are adapted to cooperate with comleinentary wedge surfaces provided on the extensions 36 of the base 2, and at 35. The core forming element 12 is also swung into its proper position simultaneously with the movement of the elements 6 and 8 or closing the open end of this core forming box and is secured to the core forming elements 6 and 8, as by means oi the wedge lugs 38. The core forming box 4 is locked to the base in this position by means of a latch 4o normally urged into its lat-ching position by means of a coil spring 42 and adapted to engage with a lug or projection 44 provided on each of the core forming elements 6 and 8.

The core formed by the core forming box 4 is supported for removal upon a plate 46 attached to a lifting tool 48, this lifting tool being provided with a collar 50 for holding the same in place relative to the core forming elements 6 and 8 during the ramining operation. This plate 46 is formed with an annular depressed portion 47 adapted to be received within an opening 49 of the end element l2 and the same has the flange 5l engaging this element 12 adjacent the opening 4Q whereby the plate is held in association therewith. When the core forming box 4 is in the position as shown in Figures 1 and 2, the same is to receive the core sand. With this box set as disclosed in these figures, the core sand is delivered into the box through the opening 52 formed in the top of the core forming elements 6 and 8. This core sand is directed into this opening by means of a hopper 54 and the hopper is lied to the top in this illing operation. The core forming device as disclosed in these figures is adapted to rest or be mounted upon a jar rainning machine, which may be suitably operated by suitable means for causing a jarring or settling of the same down to a position represented by the line 58 of Figure 1 of the drawings. The hopper 54 is then removed and any sand projecting above the line 53 would be removed by striking the saine ofi. iter this operation has been completed, the weight 60 is then applied, as shown in Figure 2 of the drawigs, and the jarring cr jolting continued until the 'weight 60 has assumed a position corresponding yto that disclosed in Figure 6 or" the drawings.

After the core sand has been jarred or jolted so that the saine conforms to the core forming siria es of the elements 68 and l2, the weight 60 is removed and a handle or bail 62 is placed along the core forming elements 6 and 8 to hold the saine n during the following steps, as will be later more fully described. This handle or bail 62 is guided in the brackets 64 and 66 and is received within the pockets 68. After these various steps have been effected, the core box 4 is then in condition to be swung around the pivot point 16 into a position for discharge of the formed core. This movement is initiated, upon release of the latch 40, by means of a coil spring '70 which raises the core box 40 slightly above the base 2 so that the same may be easily swung. The core box 4 is then swung about the pivot point 16 and in a clockwise direction, as shown in Figure 4 of the drawings, approximately 90 degrees to a position where the core forming element l2 rests upon the discharge platform 72 made integral with the base 2. When the box is in this position, the handle or bail 52 is removed, and the core forming elements 6 and 8 swung about the pivot point 24 into a position as shown in Figure 5 oi the drawings. The core is then ready to be removed and is conveniently carried in this position by means of the lifting tool 48.

In Figures 9 to 11 inclusive is disclosed an alternative core bex construction made in accordance with the present invention, the same corresponding essentially with the previously described embodiment. In this alternative arrangement, the core forming box 'Z4 is provided with the relatively movable core forming elements 76 and rI8 forming the major portion of the core, the open end of which is closed by the core forming element 8G. As in the hereinbefore described core forming device, the core forming element 8O is formed with an apertured lug 82 mounted on the rod or pin 84 journaled in a base 36, whereby the core box as a whole may be rotated from a rarnming position, as shown in Figure 10 to an opening position, as shown in Figure 11.

The core forming element 8G is further formed with the extending lug 88 adapted to carry the normally disposed bolt or pin 9G, upon which spaced lugs 92 and 94 oi the core forming elements '78 and 76, respectively, are mounted, these lugs or hinges cooperating with guide portions on the base 86 in a manner as hereinbefore described for holding these core forming elements in closed position during the ramrning operation.

In the present embodiment, the core forming box '74 is swung or rotated as a whole about the pin 84, as by means of a uid cylinder 9" suitably secured at one end to the base, as by means oi' the bolt 98, a piston 100 being operable therein and under the action of a compressed fluid. This piston 10G is operatively connected to a lug or hinge element 102, by means of the bolt 104, whereby the core forming box is swung about the pin or bolt 84 into either of the positions shown in Figures l0 and 11.

Associated with the core forming element 8O is a core carrier plate 106 for supporting the core when the same is removed from the c re forming box 74, this core carrier plate being held in position and in association with the element during the ramining operation by means of a magnetic device 108. This device comprises a casing or shell. 110 which is secured to the element 80, as by means of bolts 112, and which forms a housing for a core 114 about which is wound a coil 116, this core being secured at one end to the casing by the bolt 118 and having its other end protruding into the opening 120 formed in the element 8o. The plate 106 is formed with an annular depressed or dished portion 122 adapted to contact with the core 114 whereby the same may be held in association with the element 80 during the ramming operation. As clearly shown in Figures 9 to 11 inclusive, the casing or shell 110 is received in a recess or depression 123 when the core forming box is rotated into a position for removal of the core.

From the above disclosure, it will be clearly apparent that a journal box core made in accordance with the above disclosure requires no hand operations, the surfaces thereof being formed mechanically and rapidly, this particular device requiring less skill and less physical effort to be operated, although the core formed thereby is far superior to cores requiring hand forming.

It is to be understood that We do not wish to be limited by the exact embodiment of the device shown, which is merely by Way of illustration and not limitation, as various and other forms of the device Will of course be apparent to those skilled in the art Without departing from the spirit of the invention or the scope of the claims.

We claim:

1. A core forming device comprising a base, a core forming box swingably supported on said base, said box includingr relatively movable core forming elements, and cooperating wedge surfaces on said base and elements for holding said elements together when said box is in position for ramming.

2. A core forming device comprising a base, a core forming box supported for rotation as a unit upon said base, said box including relatively movable core forming elements, means for hold- Y ing said elements together when said box is in position for ramming, and means for locking said box to said base.

3. A core forming evice comprising a base, a core forming box supported for rotation as a unit upon said base, said box including relatively movable core forming elements, means on said base for holding said elements together when said box is in position for ramming, and means for locking said box to said base.

4. A core forming device comprising a base, a core forming box supported for rotation upon said base, said box including relatively movable core forming elements, and cooperating Wedge surfaces on said base and elements for holding said elements together when said box is in position for ramming, and means for locking said box to said base.

5. A core forming device comprising a base, a core forming box supported for rotation from a ramming position to a core removal position on said base, said box including sWingably supported core forming elements, and cooperating wedge surfaces on said base and elements for holding said elements together when said box is in its ramming position.

6. A core forming device comprising a base, a core forming box supported for rotation from a ramming position to a core removal position on said base, said box including swingably supported core forming elements, cooperating Wedge surfaces on said base and elements for holding said elements together When said box is in its ramming position, and means for locking said box to said base when in said ramming position.

'7. A core forming device comprising a base, a core forming box supported for rotation from a ramming position to a core removal position on said base, said box including swingably supported core forming elements, cooperating Wedge surfaces on said base and elements for holding said elements together when said box is in its ramming position, means for locking said box to said base when in said ramming position, and means for initiating movement of rotation of said box upon release of said locking means.

8. A core forming device comprising a base, a core forming box, said box including a' core forming element pivoted to said base, core forming elements pivoted to said rst named element, said box being adapted to be rotated about said rst named element from ramming position to core removing position, and means for holding said elements together during said movement.

9. A core forming device comprising a base, a core forming box, said box including a core forming element pivoted to said base, core forming elements pivoted to said first named element, said box being adapted to be rotated about said rst named element from ramming position to core removing position, and means for holding said elements together When said box is in its ramming position.

1G. A core forming device comprising a base, a core forming box, said box including a core forming element pivoted to said base, core forming elements pivoted to said rst named element, said box being adapted to be rotated about said firstV named element from ramming position to core removing position, and means on said base for holding certain of. said elements together When said box is in its ramming position.

11. A core forming device comprising a base, a core forming box, said box including a core forming element pivoted to said base, core forming elements pivoted to said i'lrst named element, said box being adapted to be rotated about said rst named element from ramming position to core removing position, and cooperating Wedge surfaces on said base and elements for holding certain of said elements together when said box is in its ramming position. k

12. A core forming device comprising a base, a core forming box, said box including a core forming element pivoted to said base, core forming elements pivoted to said iirst named element, said box being adapted to be rotated about said first named element from ramming position to core removing position, cooperating wedge surfaces on said base and elements for holding certain of said elements together when said box is in its ramming position, and means forr locking said box to said base when in said ramming position.

13. A core forming'device comprising a base, a core forming box, said box including a core forming element Vpivoted to said base, core forming elements pivoted to said first named element, said box being adapted to be rotated about the pivotal axis of said first named element from ramming position to core removing position, cooperating vvedge surfaces on said base and elements for holding certain of said elements together When said box is in its ramming position, means for locking said box tosaid base when in said ramming position, and means for initiating movement of rotation of said box upon release of said locking means. Y

14. A core forming device comprising a base, a core forming box having core forming elements, means for hingedly connecting said elements, and means for hingedly supporting said box on said base.

15. A core'forrning device comprising a base, a core forming ybox supported for rotation from a ramming position to a core removal position on said base, said box including sWingably supported core forming elements, and means for rotating said box from its ramming position to its core removal position.

16. A core forming device comprising a base, a

core forming box svvingably supported upon said base, and means for swinging said box into a plurality of positions.

17. A core forming device comprising a base, a core forming box swingably supported upon said base, and fiuid operated means for swinging said box into a plurality of positions.l

18. A core forming device comprising a base, a core forming box swingably supp rted upon said base, and means associated with said base for swinging said box into a plurality of positions.

19. A core forming device comprisingr a base, a core forming box swingably supported upon said base, and a fluid operated piston associated with said box for swinging the same into a plurality of positions.

20. A core forming device comprising a base, a core forming box mounted for rotation on said base, said box including swingably supported core forming elements, and a fluid operated piston associated with one of said elements for rotating said box into a plurality of positions.

2l. In a core forming device, the combination of a core forming box, a core carrier plate, and means extending through the core for holding said plate in association with said box.

22. In a core forming device, the combination of a core forming box, a core carrier plate, and magnetic means for holding said plate in association with said box.

23. In a core forming device, the combination of a core forming box, said box including a plurality of swingably associated core forming elements, a core carrier plate associated with one of said elements, and means for holding said plate in association with said element.

24. A core forming device comprising a base, a core forming box supported for rotation on said base and swingable from a rainniing to a core removal position, said box having relatively movable core forming elements disposed to open when said box is in said core removal position.

25. A core forming device comprising a base, a core forming box including a plurality of relatively movable core forming elements, means for supporting said box on said base whereby the same is movable from a ramming to a core removal position, and means engageable by said box when swung from a core removal to a ramming position for holding said elements together for ramming.

26. A core forming device comprising a base, a core forming box including a plurality of relatively movable core forming elements, means for supporting said box on said base whereby the same is movable from a ramming to a core removal position, and means engageable by said box for moving certain of said elements into closed relation and to hold the same together for ramming.

27. A core forming device comprising a base, said base having a recess and a platform, a core forming box movably mounted on said base, said box being normally disposed in said recess when in a ramming position and movable onto said platform when in a core removal position.

28. A core forming device comprising a base, said base having a recess and a platform, a core forming 'ocx movably mounted on said base, saidV box being normally disposed in s id recess when in a ramming position and movable onto said platform when in a core removal position, said box including relatively movable core forming elements disposed to open when said box is disposed on said platform.

29. A core forming device comprising a base, said base having a recess and a platform, a core forming box including relatively movable core forming elements movably mounted on said base and movable from a ramrning to a core removal position, said box being received in said recess when in a ramming position and being movable onto said platform when in a core removal position, and means engageable by said box when in said recess for holding said elements together.

30. A core forming device comprising a base, said base having a recess and a platform, a core forming box including relatively movable core forming elements movably mounted on said base and movable from a ramming to a core removal position, said box being received in said recess when in a ramming position and being movable onto said platform when in a core removal position, and means engageable by said box when swung from a core removal to a ramming position for moving certain of said elements into closed relation and to hold the same together in said recess for ramming.

3l. A core forming device comprising a base, a core forming box including a plurality of relatively movable core forming elements, means for movably supportingone of said elements on said base whereby said box as a unit is movable from a ramming to a core removal position, said element having a core forming portion adjacent one end thereof, and means disposed in substantially normal relation to said element adjacent the other end thereof whereby the other of said elements are movable therewith.

32. A core forming device comprising a base, a core forming box including a plurality of relatively movable core forming elements, means for movably supporting one of said elements on said base whereby said box as a unit is movable from a ramming to a core removal position, said element having a core forming portion adjacent one end thereof, and means connected to said element adjacent the other end thereof and in substantially normal relation thereto for swingably supporting the other of said elements when in a core removal position.

33. A core forming device comprising a base, a c'ore forming box including a plurality of relatively movable core forming elements, means for pivotally supporting one of said elements on said base whereby said box as a unit is swingable from a ramming to a core removal position, said element having a core forming portion adjacent one end thereof, means disposed in substantially normal relation to said element adjacent the other end thereof for pivotally supporting the other of said elements when said box is in a core removal position, and means engageable by said lastnamed elements for closing said box when the same is moved from a core removal to a ramming position and for holding said elements together when said box is in a ramming position.

34. A core forming device comprising a base, said base having a recess and a platform, a core forming box including a plurality of relatively movable core forming elements, means for swingably supporting one of said elements on said base whereby said box as a unit is movable from a ramming to a core removal position, said box being received in said recess when in a ramming position and being movable onto said platform when in a core removal position, said element having a core forming portion adjacent one end thereof, means disposed in substantially normal relation to said element adjacent the other end thereof for pivotally supporting the other of said elements, said elements being in normal closed position when said box is in a ramming position and being disposed to open only when said box is in a core removal position.

35. A core forming device comprising a base, said base having a recess and a platform, a core forming box including a plurality of relatively movable core forming elements, means for swingably supporting,r one of said elements on said base whereby said box as a unit is movable from a rainming to a core removal position, said box being received in said recess when in a ramming position and being movable onto said platform when in a core removal position, said element havingr a core forming portion adjacent one end thereof, means disposed in substantially normal

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