US1028852A - Molding-machine. - Google Patents

Description

J. N. BATTENFELD.

MOLDING MACHINE.

APPLICATION FILED SEPT. 9, 1909.

1,028,852, Patented June 11, 1912.

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J. N. BATTENPELD.

MOLDING MACHINE.

APPLIGATION FILED SEPT. 9, 1909.

Patented June 11, 1912.

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MOLDING moms.

APPLICATION FILED SEPT. 9, 1909. 1,028,852, Patented June 11, 1912.

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MOLDING MACHINE.

APPLICATION FILED SEPT. 9, 1909.

Patented June 11,1912.

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APPLICATION FILED SEPT. 9, 1909.

Patented June 11,1912.

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I n STATES PATENT FF on.

JOHN 1\T. BATTENFELD, OF CLEVELAND, OHIO, ASSIGNOIR TO THE BERKSHIRE MANIF FACTURING COMPANY, OF CLEVELAND, OHIO, .A CORPORATION OF OHIO.

MOLDING-MACHINE.

Specification of Letters Patent.

Patented June 11, 1912.

Application filed September 9, 1909. Serial No. 516,929.

chines, of which the following is a full, clear,

and exact description.

The present invention relates to molding machines and it is more particularly directed to molding machines in which the squeezing is done by an operator unassisted by power driven mechanism. v

The object of the invention has been to provide a machine in which accuracy of results shall be assured. This object is attained by the provision of hand operated apparatus affording that great leverage which is required for effective hand work, but provided with mechanical connections by which the extent of the pressing operation is limited to the exact amount in every instance. 7

A further feature by which I obtain accuracy in the finished mold is the provision of mechanism by which the upper half of the flask is lifted away from the pattern plate prior to the removal of the latter; and, further, the provision of means by which flasks of different dimensions may be used in the machine in the manner described.

The above objects and other desirable advantages it will be seen are attained by that embodiment of my invention described in the following specification with reference to the-accompanying drawings, in which;

Figure 1 is a side elevation of a machine embodying the invention. Fig. 2 is a front elevation thereof. Fig. 8 is a sectional side elevation of the upper part of the machine. Fig. 4 is a front view of the lower part of the machine when the pattern plate and the cope are lifted from the drag. Fig. 5 is a front view of certain parts of the machine showing how it may be used when the pattern is all on one side of the pattern plate. Fig. 6 is a plan view of the machine bed with a .flask drag thereon; and Fig. 7 is a plan view of the mechanism below the bed. The particular embodiment of my invention here shown includes a frame supporting a table A, with a ramming head held above the same on a tilting frame and lifting mechanism located beneath the table with upwardly extending posts for lifting the cope and the pattern plate. The frame which carries the ramming head comprises a cross beam B adjust-ably mounted at the upper end of two side posts G, G pivotally mounted at their lower ends. These side posts may be swung backward so as to carry the ramming head'clear of the flask and provide room for the placing of the latter in position or removal from the table, as shown by dotted lines in Fig. 1. Any suitable means such astension springs C may be employed for counteracting the weight of the frame .when it is drawn backward and thus assist in the restoration of the frame to its upright position.

The presser head here shown comprises a presser plate D proper, suspended by what may be termed a double toggle link from the cross beam. These toggles comprise in effect three links, the middle one E of which has a horizontal shaft F extending therethrough and rigid therewith. To this shaft is secured an operating handle f having sufficient length for the operator to obtain the great leverage necessary in this connection, the handle being provided with a suitable counterweight f secured to an extension on the opposite side of the shaft. This shaft is rotatably mounted in bearings 9 formed near the middle of the vertical guide bars 9, g The upper ends of these bars pass freely through'vertical guide sleeves b in the beam B, and their lower ends pass loosely through vertical sleeves 0Z integral with and located near the ends of the presser plate D. The upper links E of the toggle are pivoted to the beam B,that is to say, they are fixed at their upper ends to a horizontal shaft H which is mounted in the ears 6 which depend from the beam B, and the lower links E are fixed to a shaft I-I' mounted in ears 0? on the plate D. The turning of the shaft F will cause the vertical reciprocation of the presser plate D. This presser plate slides up and down upon the ide bars 9, g, which guide bars, in turn, s ide up and down through the holes in the beam B.

With this arrangement the hand lever f can be made of considerablelength so that the multiplication of forces exerted through the toggles is quite great; and therefore the presser plate can exert great pressure per unit of area upon the sand in the flask. This pressure may be varied as requiredv by the vertical adjustment of the bar B upon the frame members O, C; which adjustment also enables the machine to be used with flasks of various heights. It will be further noted, however, that by reason of the toggle arrangement, that in every instance as soon as the presser head has descended to a certain extent, fixed by the length of the toggles, further downward motion will cease regardless of what effort the operator may use. In fact, any further movement of the lever would result in swinging the toggles to the opposite side and raising the presser plate. By this means it is possible to effect a uniform pressure on every flask placed in the machine regardless of the individual .factor introduced by the operator.

The means for lifting the cope I and the pattern plate L from the drag I comprises vertical reciprocating posts J, J connected with a common cross head K beneath the platform of the machine and extended up through suitably shaped slots a in the bed A. The reciprocation of the cross head K carrying the lifting posts J, J is attained by some suitable means, such as that illustrated, in which a pair of racks M are controlled by a couple of intermeshed gears N, N, one of which is operated through the medium of a handle at attached thereto.

Suitable guides for steadying the cross head during its reciprocation are provided, and consist, as shown, of fixed vertical sleeves P, P through which slide rods 10 fixed to the cross head. The posts J, J projecting upward from the cross head are of proper diameter at their upper ends to pass through slots or openings Z in the projecting edges of the pattern plate L. The cope I of the flask is provided with lugs or ears 2' lying in the vertical path of movement of the lifting posts so that the rise of the latter will by engaging said ears, cause the raising of. the cope from the pattern plate. Below their upper ends the lifting posts have an altered diameter such that a shoulder 7' is provided to take beneath the projecting edge of the pattern plate, so that in the upward movement of the posts the pattern plate will be separated from the drag after the cope'has been lifted from the pattern plate. The precise form of the projecting edge of the pattern plate is not material; and the ears or lugs of the cope may be of any desired form. It is merely necessary that they lie properly to be engaged by the respective portions of the lifting posts with which they cooperate.

The machine is provided with adjustable devices by means of which it may be adapted to operate in the described manner with flasks of different measurements in all directions. The cross head K is provided with slots through which the posts J pass, which posts may be moved to any position in said slots and then clamped therein and to the cross head by the nuts j. Adjustably fixed to the bed A are four blocks Q having bolts g which screw down into them. These blocks Q are slotted lengthwise and a bolt 9 is employed for securing them to the bed A. They should be secured in such position that the four bolts 9, properly adjusted as to elevation, lie beneath the bottom edges of the drag. By the adjustment of these bolts any drag, however much it may be distorted, may be leveled up so that its upper surface upon which the cross head rests will be substantially horizontal.

Adjustably secured to the table are angle plates B. These are properly adjusted for use in conjunction with the flask of any size so that when the lower rear corners of the flask engage said angle plates the flask will be properly positioned upon the table. It will be understood that in using this machinethe pattern plate is placed between the two parts of the flask and the lower flask is placed upon the table in engagement with the angle plates R and resting on the bolt-s g.

The upper part of the flask is filled; the

frame carrying the presser plate is swung to carry it over the filled flask; the usual board S is placed upon the sand in the flask; and the presser plate is moved down by the operator who by taking hold of the handle 1 straightens out the toggles, and causes said downward movement of the presser plate. This being accomplished the presser plate is lifted and the frame which carries it may be swung to the position shown by dotted lines in Fig. 1 and then the flaskis turned over upon the bedA, and the upper part of the flask is filled with sand and pressed by the described mechanism. Then the operator taking hold of the handle'n turns it and thereby raises the cross head; causing the rods J to engage ears 71 whereby the cope is lifted from the pattern plate evenly and squarely; and causing the shoulders j to engage the pattern plate which is thereby lifted from the sand in the drag in like manner. When the handle n has been turned to the position which carries the cross head to the required position, it may be locked while the operator is removing the filled flask from the machine,this locking being ac complished by means of'a hook T pivoted to one of the vertical frame members and an gaging said handle.

Having thus described 'my invention, I

shaft, frame and presser plate, and means for turning the shaft to raise and lower the v presser plate.

2. In a molding machine, a table adapted to support a flask, a frame extending upwardly above said table, a presser head sup ported by said frame, said presser head including a presser plate, a shaft having bearings guided for vertical movement with respect to said frame, and power multiplying connections between the shaft, frame and presser plate comprising links connected to the frame, links connected to the presser plate, and arms rigid with the shaft and connected to the two sets of links respectively.

8. In a molding machine, a table adapted to support a flask, a frame extending up wardly above said table and comprising a cross member, upright members supporting the cross member, a presser head supported by said cross member and including a vertically movable presser plate, rods guided for vertical movement in said cross member, a shaft having bearings in said guide rods and adapted to be moved vertically therewith, and toggle connections between the shaft, cross member and presser plate comprising links pivoted to the cross member, links pivoted to the presser plate, and arms rigid with the shaft and pivoted to the free ends of said links respectively.

4. In a molding machine, a table adapted to support a flask, a frame extending up wardly above the table and comprising two upright members, and a cross member supported by said upright members and adapted for adjustment along the same, a presser head supported by said cross member and including a vertically movable presser plate, rods slidably mounted in bearings on said cross member, a shaft having bearings in said rods, and adapted to be moved vertically therewith, and means for moving the presser plate downwardly a predetermined distance with a multiplication of the power applied to the shaft comprising toggle connections between the shaft, cross member and presser plate.

5. In a molding machine, a platform for holding the flask, lifting means for the cope, and adjustable stops for determining the location of the flask on the platform, said stops limiting the movement of the flasks with respect to two directions and being adjustable in each of those two directions.

6. In a molding m'achine, a table adapted to support a flask, stops for determining the location of the flask on the table, said stops being adjustable horizontally along the table and being adjustable vertically, and vertically movable cope lifting means extending through the table and adjustable so as to accommodate flasks of difierent dimensions.

In testimony whereof, I hereunto affix my signature in the presence of two witnesses. JOHN N. BATTENFELD.

Witnesses:

E. L. THURSTON, H. R. SULLIVAN.

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

Washington, I). G.

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