US1207362A - Molding-machine. - Google Patents

Description

J. N. BATTENFELD.

MOLDING MACHINE.

APPLICATION FILED JULY 2!. i914.

Patented; Dec. 5, 1916,

am-am JOHN N. BATTENFELID, 0F CLEVELAND, OHIO.

MOLDING-MACHINE.

Specification of Letters Patent.

Patented Dec. 5, 1916.

Application filed July 27, 1914. Serial No. 353,337.

To all whom it may concern:

Be it known that 1, JOHN N. BATTENFELD, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Molding-Machines, of which the following is a full, clear, and exact description.

This invention relates to molding machines, the object being to provide a machine of strong and durable construction, providing mechanism for the jarring of the mold and the raising and lowering of the mold for the purpose of drawing the pattern, the parts being so arranged that a mold may be easily and quickly made, and the mold removed from the machine upon a swinging table, thus minimizing the danger of injury to the mold in handling.

Generally speaking, the invention comprises the elements and combinations thereof set forth in the accompanying claims.

Reference should be had to the accompanying drawings forming a part of this specification, in which- Figure 1 is a front elevation of the molding machine; Fig. 2 is a partial front elevation of the machine with portions in section; Fig. 3 is a side elevation showing the locking mechanism for the roll over table; and Fig. 4: is a top plan view with portions in section of the construction shown in Fig. 3.

The base of the machine is represented at 1, and at opposite ends of the base there are upright posts 2 and 3. These posts at their upper ends are joined to a head 4, so that the base 1, the posts 2 and 3 and the head 4: form a rigid frame for supporting the various elements of the molding machine.

Upon the post 2 there is mounted a table 5. This table is mounted upon a suitable bracket, which may be generally represented at 6. This bracket has secured to it or integrally formed with it two collars 7 and 8, which collars encircle the post 2 and have an easy sliding fit thereon. Below the col.- lar 8 there is a stationary collar 9 which is adjustably secured upon the post 2. This collar acts as a thrust bearing, and by its position upon the post 2 holds the table 5 in adjusted position, so that the table may swing in substantially any desired horizontal plane.

Extending transversely of the frame of the molding machine is a molding table 10. This table is at its opposite ends secured to arms 11 and 12, and the table is adjustable w1th respect to the arms, so that it may be moved inward or outward upon the arms, the purpose being to permit shifting of the flask which is mounted upon the table 10, so that the center of gravity may come substantially in line with the pivotal points of the arm 11, thereby making it much easier to effect the rolling over of the table than would be the case if the center of gravity of the mold is not thus in alinement. This ad justability is secured by providing a plurality of sets of bolt openings upon the members 11 and 12. This matter is illustrated with respect to the member 11 in Fig. 3, and as the same construction is provided for member 12 this illustration will suffice for both. As shown in Fig. 3, two sets of bolt openings 11 and 11 are shown, the bolts which hold the table 10 to arms 11 and 12 occupying either set of bolt holes according to the adjusted position desired.

The arms 11 and 12 are pivotally mounted upon collars 13 and 14-, which collars encircle the posts 3 and 2, respectively, and are adapted to slide along their respective posts.

Each of the collars 13 and 1 1 are provided with a means by which each collar may be secured in any adjusted position upon the rod with which it cooperates, and for the purpose I have shown set screws generally represented at 15.

The collar 13 is provided with an extension 13 and this extension is provided with a groove 13. This groove receives a stub post 11 which is secured to or made integral with the arm 11. "When the post 11 rests within the slot 13*, the arm 11, and consequently the arm 12, will be in vertical position, and the table 10 will have been rolled over, and the mold carried by the table 10 will be in position of the drawing of the pattern. x As a means to lock the arm 11, and conse- 1 quently the table 10, I have shown a spring pressed pin 16, which is provided with a rectangular key 17 at its head. The arm 13 is slotted, and the post 11 is slotted, and the head 17 is adapted to engage with the slots just described, thus securely locking the parts against relative movement. Obviously, the pin 16 may be pulled outwardly and thus release the parts previously locked.

Upon each post 2 and 3 there is a collar 18. This collar is adapted to he slid along its post and is provided with means for securing the collar in adjusted position. These collars are adjusted upon the posts 2 and 3, so as to limit the movement of the collars 13 and 14, and of course their position is predetermined before the molding operation is started.

Upon the base 1 there is mounted a cylinder 19. This cylinder is provided with an air inlet indicated at 20, and with an air exhaust indicated at 21. At the upper portion the cylinder 19 is provided with extending heads 22,- which are provided with openings, and through the openings there extends bushings 23. Depending from the under sides of the heads 22 are cylindrical casings 2 1, which at their lower ends are closed by caps 25. These parts just described form guiding and protecting casings for certain parts of the machine, as will be later described. ithin the cylinder 19 is a hollow piston 26. This piston has a close working fit within its cylinder 19, and is suitably packed, as will be understood by those skilled in the art.

When the air is admitted through the opening 20 in the cylinder 19, the pressure building up beneath the piston 26 will cause the piston to be raised until the opening 21 is uncovered, at which time the air may exhaust, permitting the piston and parts, carried thereby to descend by gravity, but immediately upon the recovering of the exlraust port 21 by the downward passage of the piston 26, the pressure again builds up. This cycle is performed continuously, thus producing the jarring of the piston 26,

which as will be later explained forms a support for the molding table.

The piston 26 at its upper end provides a platform 26, upon which rests a head 27. To this head there are secured depending guide rods 28, which extend through the bushings 23 and into the cylindrical members 24:. These rods 28 serve to guide the head 27, as it may be raised and lowered so as to keep the same in alinement and prevent any twisting or skewing of the head. There is secured to the head at the central portion thereof a downwardly depending piston 29, which may be termed the raising piston, This extends within the hollow piston 26. At its lower end the piston 29 is provided with a packing 30, which is by suitable means pressed against the interior of the hollow piston 26, thus forming a tight joint. At its upper end the piston 29 is suitably packed, as indicated at 31, so that air may not leak past the packing.

The piston 29 is provided with a duct 32, which extends entirely through the piston, and at its upper end communicates with a duct 33, which is formed in the head 27 Obviously, if compressed air be admitted through the duct 33 and the duct 32 beneath the head of the piston 29, it will cause the elevation of this piston, and with it the head 27.

The piston 29 is spaced from the interior walls of the hollow piston 26, except at the points of packing. A duct 34 extends through the platform 26, and communicates with the space between the piston 29 and the inner wall of the piston 26. Air under pressure admitted to this space will exert a pressure against the upper part of the head carried by the piston 29, and prevents any relative movement between the piston 29 and the piston 26 during the jarring operation.

The air under pressure above the piston head 30 also assists in the drawing of the mold with respect t the pattern in that it prevents any hanging of the piston 29 when air is allowed to exhaust from beneath the head of this piston. If there is any tendency for any reason whatsoever for the piston 29 to hang in its descent, the pressure of the air above will overcome this hanging, and so cause the continuous descent of the piston.

The piston 29 may be raised by permitting compressed air to pass through the duct 32, because under such circumstances the pressure beneath the piston 29 is greater than the pressure of the air upon the upper part of the head of the piston 29.

The duct 33 is supplied with compressed air through a flexible tube 35, and tho passage of air through this pipe is governed by a suitable cock 36. The duct 3st is by means of a flexible tube 37 connected with the compressed air line, and normally is always so connected with the air line. The inlet port 20 is by means of a pipe 38 and suitable cock 39 connected with the air line, and the exhaust port 21 may exhaust into the air, or preferably is connected to a pipe 40, which will direct the exhaust so as not to agitate dirt and sand which is around the machine.

In operation the machine works as follows: In the position shown in Fig. 2 the pattern upon a pattern plate will be secured to the table 10, and a flask will also be socured to the table 10 in a manner which is well known in the art. At this time the table 10 is resting upon the head 27, and the collars 14. and 13 are free to slide upon the guides 2 and 3. The flask being filled with sand, air will be admitted through the port 20, which will cause the hollow piston 26, and all the parts carried thereby. including the head 27, to be jarred, and as the table 10 is free to move it will jar with the parts upon which it rests. When thejarring operation is completed, a board will be placed upon the top of the flask and suitably clamped. Air is then admitted through the ducts 33 and 32, which will cause the head 27 to be raised and with it the table 10. The table will be raised until the collars 13 and llcontact with the collars 18, at which time the set screws 13 are tightened and the air allowed to exhaust from beneath the piston 29, thus permitting the head 27 to descend.

The moldis then rolled over and locked by means of the spring pressed rod 16. The table is then swung between the posts 2 and 3, and is just above the head 27. Air is then admitted beneath the piston 29, causing the piston and head 2'? to be raised and with it the table 5, for, as before described, the collars 7 and 8 have a sliding fit upon the rod 2. lVhen the table 5 is in contact with the board upon the lower portion of the mold, the clamps which hold the mold to the table 10 are removed, and the air is permitted to exhaust from beneath the cylinder 29. This permits the head 27 and table 5 to descend, thus effectually drawing the mold from the pattern. When the head 27 reaches its lowermost position, it will leave the table 5 free to be swung outwardly from above the head 27, so that the mold may be removed from the table 5 without danger of injuring the mold.

Having described my invention, I claim:

1. In a molding machine, the combination with a molding table, means adapted to raise and lower the same, a swinging table pivotally and slidably supported at one side of the molding table, said swinging table being adapted to be swung above the raising and lowering means when the same is in lowered position, and adapted to be raised with the molding table.

2. In a molding machine, the combination with a molding table, means adapted to raise and lower the same, a guide rod adjacent the molding table, a swinging table, a bracket supporting said table, said bracket being provided with spaced collars which engage with the said guide rod, said collars being adapted to turn upon the guide rod and to slide upon the same, the said table being adapted to swing above the raising and lowering means when the same is in lowered position, and adapted to be raised with the table as it is raised.

8. In a molding machine, the combination with a molding table, a arring, raising and lowering means adapted to engage the table, stationary guide rods adjacent the molding table, brackets slidably mounted upon the guide rods, means for securing said brackets upon the guide rods in any desired position, said molding table being adapted to rest upon the raising and lowering means and to reciprocate upon the said guide rods as the jarring means is operated.

4. In a molding machine, the. combination with a base and side guide rods, a molding table, a jarring piston member, and a jarring cylinder member, one of said members being mounted upon the base, the other supporting said molding table, cooperating means between the molding table and guide rods to guide the said table as it moves, guiding devices supported beneath the molding table, and rods depending from the table and cooperating with the guiding devices, thereby to guide the molding table.

5. In molding machine, the combination with a molding table, a pivoted pattern plate, means for supporting said pattern plate, said pattern plate being adjustable with respect to its supporting means.

6. In a molding machine, the combination with a molding table, guiding rods adjacent the molding table, brackets slidably and pivotally mounted upon the guide rods, said molding table being adjustably mounted upon the said brackets, and means for raising and lowering the molding table.

7. In a molding machine, the combination with a molding table, guide rods adjacent the molding table, collars slidably mounted upon said guide rods, means for holding said collars in adjusted position, pivoted arms carried by said collars, and a pattern plate adjustably secured upon the said arms.

8. In a molding machine, the combination with a base member and a movable head member, a cylinder carried by one of said members, a hollow piston carried by the other of said members, a raising piston within the said hollow piston, said raising piston being directly secured to the said head member, means for admitting motive fluid and exhausting the same beneath the hollow piston to permit a jarring action, means for admitting motive fluid between the hollow piston and the raising piston, and for eX- hausting the same, thereby to raise and lower the head member.

9. In a molding machine, the combina tion with a base, a cylinder secured to the base, a hollow piston within said cylinder, means for admitting and exhausting a motive fluid within the cylinder and beneath the piston to produce a jarring action, a raising piston within the hollow piston, a head secured to said raising piston, means for admitting and exhausting a motive fluid beneath the raising piston, whereby the head may be raised and lowered, and means for preventing relative movement between the raising piston and the hollow piston during the j arring action.

10. In a molding machine, the combination with a base, a cylinder mounted upon said base, a hollow piston within said cylinder, means for admitting and exhausting motive fluid beneath the hollow piston, thereby to produce a jarring action, a raising piston within the hollow piston, having a head which engages the inner Walls of Cir to the space above the head of the raising piston.

. 11. In a molding machine, the comblnation with a base member and amovablehead member, a cylinder carried by one of said members and a hollow piston carried by the other of said members, a raising piston within the hollow piston, said raising piston being secured to the head, means for admitting motive fluid and exhausting the same beneath the hollow piston to permit a jarring action, means for admitting motive fluid between the hollow piston and the raising piston, and means presenting a resilient constant pressure in a direction upon the raising piston tending to maintain it within the hollow piston.

In testimony whereof, I hereunto aflix my signature in the presence of two witnesses.

JOHN N. BATTENFELD. lVitnesses:

A. J. HUDSON, L. I. PORTER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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