US784535A - Molding-machine. - Google Patents

Description

No. 784,535. PATENTED MAR. 14, 1905. H. A. BATTBNFELD.

MOLDING MACHINE.

APBLIOATION FILED NOV. 9, 1903.

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PATBNTED MAR. 14, 1905. H. A. BATTENPELD.

MOLDING MACHINE.

APPLICATION IILBD NOV. 9, 1903.

4 SHEETS-SHEET 2.

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No. 784,535. PATENTED MAR. 14, 1905. H. A. BATTENPELD.

MOLDING MACHINE.

APPLIOATION FILED Nov. 9, 1903.

4 SHEETS-SHEET 3.

No. 784,585. PATENTBD MAR. 14, 1905. H. A. BATTENFELD.

MOLDING MACHINE.

APPLICATION FILED NOV. 9, 1903.

' 4 SHEETS-SHEET 4.

UNITED STATES Patented March 14, 1905.

PATENT OFFICE.

HARRIET A. BATTENFELD, OF CLEVELAND, OHIO. ASSIGNOR TO THE BERKSHIRE MANUFACTURING COMPANY, OF CLEVELAND, OHIO, A

CORPORATION OF OHIO.

MOLDING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 784,535, dated March 14, 1905.

Application filed November 9,1903. Serial No. 180,342.

To ml]. whom it may concern:

Be it known that LHARRIET A. BAT'IENFELD, a citizen of the United States,residing atCleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Molding-Machines, of which the followingis a full, clear, and exact description, reference being had to the accoin 'ianying drawings.

This invention relates to improvements in molding-machincs, and more particularly to that class of machines which are adapted to fill flasks with sand, compress the sand, and deliver them in a position to be removed by the operator.

More specifically, the invention comprehends the use of a traveling bed adapted to receive the flask, to deliver it to the opening in the sand-hopper, carry it to a point where the sand may be compressed therein, and, finally,

take it to a position where it may be removed from the, bed.

Referring to the drawings, Figure 1 is a front elevation of the machine. Fig. 2 is a side elevation. Fig. 3 is a vertical section through the center of the machine, and Fig. 4 is a vertical sectional view looking from the front of the machine.

Any suitable frame may be employed in carrying out my invention; butl prefer to provide a frame consisting of the standards A .and A, so constructed and of such contiguration that they will support all the parts necessary for the application of the invention. Extending from the upper ends of these standards A and A are guide-rods a, connected at their upper ends by a cross-piece a for spacing the two standards apart. To the rear of the guide-rods a is the hopper 13, having a sheet'metal upper portion secured in a casting 6, which is provided with cars 5, through which are secured sup porting-bolts 1/ fastened rigidly in suitable ears in the standards. The

bottom of this hopper B is open for a purpose which will hereinafter appear.

The inner side of each of the standards A and A is providedwith a guideway (/3, adapted to receive a tongue 0, carried by a traveling bed C. This bed is substantially of the form in cross-section as shown in Fig. 3, with the rearwardly-extemling elevated platform 0 arranged to travel under the lower end of the hopper and close the opening therein when the front portion of the bed C is not under the same. A lip o 'is secured to the forward edge of the elevated bed portion 0 for the purpose of preventing the spilling of material contained in the hopper, as will more fully appear. The forward portion of the bed C is provided with a press-bed plate D, having a central opening (Z, which permits the passage of mechanism to be described. Above this opening is what may be termed a stripping-plate (Z, having suitable openings therein for the passage of the pattern members (Z which are adapted to move up through said openings and into the flask, whereby the sand may be compressed around said pattern members, after which they may be withdrawn through said openings in the stripping-plate to permit the removal of the flask from the machine. Projectionsdareprovided upon the strippingplate (Z in a position to receive cars (1" upon the flask E, thus insuring the proper positioning of the flask with relation to the pattern members.

Any suitable mechanism may be provided for lowering the patterns from the flask after the sand has been placed around them. I have, however, shown the pattern members (Z mounted upon vertically-reciprocating rods d which have suitable bearing in the lower member of the bed and also have a cross-head d rigidly secured between the plate 4 and the lower portion of the main bed. This cross-head J is provided with a slot (Z Secured to the main bed are pillow-blocks 0", adapted to receive a shaft 0', provided with an operating-crank c at one end and between the pillow-blocks c with a pair of rock-arms c, carrying at their free ends a roller 0 which passes through the slot (Z in the cross-head (Z It will be seen that when the operatingcrank is shifted the roller 0 will traverse the slot and in doing so will reciprocate the rods (Z and withdraw the pattern members.

The press and its construction will now be described, the bed portion thereof having been described in connection with the flask and the pattern mechanism.

Slidably mounted upon the guide-rods a is a cross-head F of substantially the construction shown in the drawings and having swiveled to its outer ends the operating-knuckles f, which are rigid with the operating-armsf.

These operatingarms are connected to a source of power which will be explained in connection with the power mechanism for reciprocating the bed. On the under side of the cross-headF is a presser-platef having an apron f and so arranged that it may cooperate with the other parts to create a pressure upon the sand in the flask; but instead of the plate f itself contacting with the sand the bottom board of the flask, or what is termed the presseeboard G, is provided to insure the proper amount of compression and to prevent the sticking of the sand to the presserplate. This bottom or presser board G has a depending portion 9, which is adapted to it within the flask and give the proper compression, while the main portion thereof extends out beyond the ends of the flask, where it is engaged by suitable latches secured to the presser-plate for holding it to the same. These latches consist of pivoted members H, having downwardly-projecting hooks h, arranged to take upon the under side of the main portion of the presser-board Ur. The ends it of the latches H extend out to a position where they may engage stops a, ad j ustably secured to the guide-rods a. Springs hold these latches down against the presser-plate f and in a position where they will hold the presser-board in position against the presser-plate. The cross-head F is further provided with centering-pinsf which project from the under side thereof through the openings in the stops 6/ and into suitable grooved lugs The lower ends of these pins f are tapered, and the upper ends of the lugs are beveled upon their interior, so that the pins will'be sure to strike the groove and insure the proper position of the main bed C When the press descends to compact the sand in the flask.

The operation of the mechanism thus far is as follows: The flask E is placed upon the stripping-plate and the patterns are forced up into position. The bed is then shifted through mechanism hereinafter disclosed, so that theflask travels back underneath-the hopper B, the flask is filled with sand, and the main bed returns to a position under the press. The press then descends, carrying with it the bottom or presser board G, and compacts the sand in the flask, the latches H having in the meantime engaged the stops at and released the presser-board. The power mechanism then conveys the main bed forward, where it stops in a position for bottom board in place after having first withdrawn the pattern memberstherefrom through the mechanism for that purpose. The machine is then ready to be again operated. When the flask will be placed upon the stripping-plate, the pattern members will be forced up within the same and the bottom or presser board of the flask will be placed in the hook carried by the cross-head.

The power mechanism and its mode of transmission to the several parts will now be we plained.

Rotatably mounted in the standards A A is the main operating-shaft K, which runs through from one side of the machine to the other and is provided on the outside of the standards with gears 7r, which mesh with gears M, rigidly secured to a cross-head-operating shaft m. These gears M have crank-pins m, adapted to receive the knuckles f", rigid with the lower end of the cross-head-operating armsf. Thus it will be seen the cross-head will receive its reciprocation from the main operating shaft through the gearing described.

The main operating-shaft K receives its rotation from a belt-pulley N or from any other suitable source of power through a clutch mechanism 12. This clutch n is arranged to be thrown by a lever P, pivoted to an arm 7),,-

zontal diameter of the gear M this frictionroller will throw the lever, and consequently throw out the clutch and disconnect the pulley from the operating-shaft. The bed is then at rest and is in its forward position.

The normal position of the main bed C is forward, with the flask in advance of the presser-plate, as j ust described. The machine remains at rest at this point, and the bed is not reciprocated until the main operatingthe bed must move forward to bring the flask into the forward or normal position. This is brought about by a series of racks and mutilated gears, which will now be described.

On the under side of the main bed are two pairs of racks Q and Q, the racks Q being engaged by the mutilated gears 'q and the racks Q being engaged by the pinions (1'. The mutilated gears 17 are keyed to the crosshead-operating shaft m and receive their rotation therefrom, while the pinions (7 are mounted upon a transverse shaft (f, which receives its rotation through pinions rigid therewith and mounted upon the projected ends of the shaft (fina position to be engaged by the segments (1", rigidly secured to the cross-head operating shaft 11/.

The operation of the gearing just described is as follows: The main operating-shaft is rotated through the clutch mechanism, and this rotation is conveyed to the cross-head-operating shaft 11/. The rotation of this shaft rotates the segments 1 which are then in a position to engage the pinions q, the rotation of which causes the rotation of the shaft and the pinions 1 these pinions being then in engagement with their racks Q. This carries the bed back into a position such that the flask may be filled from the hopper. In the meantime, however, the segments have completed their operative connection with the pinions q and a section of teeth of the mutilated gears 1] have come into position to engage their racks Q. The engagement of the teeth of these mutilated gears with their racks causes the main bed to move forward; but the numberof teeth of the mutilated gears is only suflicient to convey the bed to a position where the flask is under the presserplate. A gap in the mutilated gears permits the bed to stay in this position, and the further rotation of gears M draws the cross-head F down and compresses the sand in the flask in a manner before described. The racks Q are again engaged by short series of teeth on the mutilated gears r and the bed is brought forward to its normal position.

1 have described a train of gearing and mechanism for reciprocating the bed and for operating the press; but I do not limit myself to the specific construction shown or described, since any-form of operating mechanism may be used to accomplish these results.

Having described my invention, L claim 1. In a molding-machine, the combination with a reciprocating bed adapted to carry a flask, of a flask, a hopper, pressing mechanism, means whereby the flask on said bed may be automatically tilled from said hopper, may be operated upon by said pressing mechanism and may be moved out of range thereof, and means carried by said bed for closing the opening in said hopper.

2. ln a molding-machine,-the combination with a reciprocating bed adapted to carry a flask, of a flask. a hopper and pressing mechanism, means whereby the flask upon said bed may be moved from its normal position to the opening under said hopper, to the pressing mechanism and then to its normal position, and a plate carried by said bed for clos- &

ing the opening in said hopper when said flask is removed from under the same.

3. In a molding-machine, the combination with a frame, of a reciprocating bed carrying a plate, means for securing a flask thereto, a hopper adapted to deliver molding-sand to said flask when in one position, means carried by said bed for closing the opening in said hopper when said flask is not beneath the same, a press, and means for moving said flask un-' der said hopper, under said press and back to a position out of range with thesame.

at. In a molding-machine,the combination with a reciprocating bed adapted to carry a flask thereon, of a flask, a hopper, pressing mechanism, means whereby said flask may be moved from its normal position to said hopper to the pressing mechanism and then to its normal position, and a plate carried by said bed on a level with the upper portion of the flask for closing the opening in said hopper when said flask is removed from under the same.

5. In a molding-machine, the combination with the frame, of a reciprocating bed having a plate thereon, a flask secured upon said plate, a hopper arranged to deliver moldingsand to said flask, means for closing the opening in said hopper when the flask is not under the same, a press, a presser-board carried by said press, means whereby said presserboard is left in the flask, and means for moving said bed to said hopper to said press and out of range with the same.

6. In a molding-machine, the combination with a reciprocating bed, gearing therefor, a flask, a press arranged to compress the sand in said flask, a presser-board carried by one member of said press, and means whereby said presser-board is left in said flask when the member of said press retires.

7. In a molding-machine, the combination with a reciprocating bed, of gearing therefor, a flask, a press arranged to cooperate with said flask and to compress the material therein, a presser-board carried by one member of said press, and latches carried by the member of said press for normally holding said presserboard, an d means for releasing said board upon the descent of said member.

8. In a molding-machine, the combination, with a reciprocating bed, of gearing therefor, a flask, a press arranged to cooperate with said flask, latches carried by one member thereof, a presser board carried by said latches, and stops for engaging said latches to release said presser-board upon the retiring of the member of said press.

9. The combination of a frame, a reciprocating bed mounted therein, gearing therefor, a plate, a flask thereon, a reciprocating presser member above said flask, means for reciprocating said bed, means for reciprocating said presser member, a presser-board, latches carried by the presser member for engaging said board, and stops mounted upon the frame for releasing said board after the compressing action has taken place.

10. In a molding-machine, the combination of the frame, of a reciprocating bed having a plate, a flask removably secured thereto, a hopper carried by said frame above said flask, a closing-plate carried by said bed and adapted to close the opening in said hopper, a presser member located above said flask, means for reciprocating the same, a presser-board carried thereby, means for releasing said board upon the downward movement of said presser member, means for moving said flask under said hopper, then under said presser-board, and finally out of the range of said presser member.

11. In amolding-machine, the combination with a reciprocating bed, of a hopper, pressing mechanism, an operating-shaft, another shaft, a counter-shaft, gearing between said operating-shaft and said second-mentioned shaft whereby the sameis rotated, a mutilated gear upon said second-mentioned shaft arranged to mesh with a pinion upon said lastmentioned shaft, a gear upon said last-mentioned shaft arranged to mesh with a rack upon said bed, and another mutilated gear upon said second-mentioned shaft arranged to mesh with a rack upon said bed, all of said gears being arranged to move said bed from its normal position to the hopper, from there to the pressing mechanism and finally back to its normal position.

12. In a molding-machine, the combination with a reciprocating bed, of a hopper, pressing mechanism, racks upon the under side of said bed, an operating-shaft adapted to rotate in one direction, gearing between said shaft and said racks whereby said bed may be moved from normal position to the hopper where it will stop while the flask is filled, other gears for moving it tothe pressing mechanism, and another set of gears for moving it back to normal position after the sand has been completely pressed.

13. In a molding-machine, the combination with a reciprocating bed arranged to carry the flask, of a hopper, pressing mechanism, racks on the under side of said bed, an operatingshaft arranged to rotate continuously in one direction, a counter-shaft provided with pinions meshing with onepair of said racks, and mutilated gears between said first-mentioned shaft and one pair of said racks whereby the bed is moved from its normal position to the hopper, from said hopper to the press and finally back to its normal position.

14L. Ina molding-machine, the combination with a reciprocating bed carrying the flask, of a hopper, pressing mechanism, racks on the under side of said bed, a main operatingshaft arranged to rotatecontinuously in one direction, a second shaft, gearing between these two shafts whereby thelatter will rotate at a much lower rate of speed, a counter-shaft provided with a pair of pinions, a rack upon said bed meshing with one of said pinions,a mu

tilated gear upon said second-mentioned shaft arranged to mesh with the other ofsaid pinions and another mutilated gear upon this same shaft arranged to mesh with a rack on the bed, all of said gears being arranged in a manner such that the bed is moved from normal position to the hopper, from said hopper to the press, from'the press back to the normal position.

In testimony whereof I hereunto aflix my signaturein the presence of two witnesses.

HARRIET A. BATTENFELD.

itnesses:

J. B. HULL, B. W. BROCKETT.

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