US893346A - Foundry molding-machine. - Google Patents

Description

No. 893,346. PATENTED JULY 14', 1908.

J.A R. MooRHoUsE. POUNDRY MOLD'ING momm.V APPLICATION FILED NOV. 22,1907.

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J. R. MOORHOUSB. POUNDRY MOLDING MACHINE.

APPLICATION FILED NOV.22.1907.

PATENTBD JULY 14, 1908.

5 SHEETS-SHEET 2.

No. 893,346. PTENTED JULY 14, 1908.

J. R. MOORHOUSE.

FOUNDRY MOLDING MACHINE.

APPLICATION FILED NOV. 22, 1907.

5 SHEETS-SHEET 8.

Witnesses PATBNTED JULY 14, 1908.

J. R. MooRHoUsB. POUNDRY MOLDING MACHINE.

APPLICATION FILED NOV-22. 1907.

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wir uns PATENTED JULY i4, 1908..

J. R. MOORHOUSE. POUNDRY MOLDING MACHINE.

APPLICATION FILED NOV. 22.1907.

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JOHN R. MOORHOUSE, OF PHILADELPHIA, PENNSYLVANIA.

FOUNDRY MOLDING-MACHINE.

No. cease-c.

Specification of Letters Patent.

Patented July 1st, 1906.

Application filed November 22, 1907. Serial No. 103,282.

To all whe/7n. it may concern.'

Be it known that l, JOHN B.. MoonHoUsn, a resident of the United, States, residing in thc city and county of Philadelphia, State of Pennsylvania, have invented a new and useful lfr'iundry Molding-Machine, of which the following is a specification.

The object of my present invention is to devise a novel construction ol" a molding machine in which a greater number of molds may be made than in the machines heretofore employed, and in which the combined operations of ramming, roll over and stripping may be ei'lected at one operation or in which the dilferent operations 'may be kept distinct and operated independently of the other so that the different operations of ramming the flask with pattern located, roll over of the 'flash with. mold, and the withdrawal or stripping of the pattern `from the mold may be readily and quickly carried out.

To the above ends my invention consists of a novel construction of a molding machine in which the mold is rai'umcd during the roll over of the l'laslr containing the mold.

lt 'further consists of a novel construction in which the weight of the 'flask in addition to the weight oil" the sand forming the mold, and the weight of the pattern plate, and press head acting by gravity at a distance 'from the center, serves to compress the mold either partly or entirely, thereby rendering the work of the operator much easier since in machines as heretofore c nstructed the 'force acting through levers to compress the mold is exerted entirely by the operator.

My invention 'further consists of a novel construction of a molding machine in which the press head serves as a table or support for the Vlla-slr containing the mold when the same is rolled over.

My invention 'further consists of a novel construction of a machine in which it is not necessary for the operator to use a large amount ol" exertion to turn or roll over the l lasli when the patterns are to be witliidrawn, and in which the operator does not have to lift against the weight of the 'llaslr and the mold, (since in my novel construction the heavier the weight of the 'flask and mold no greater effort is required 'for the working of the machine.) 1 obtain this result by allowing the center around which the pattern plate carrying the llaslr is to turn in such a 'manner that when it is moved. 'from a horizontal position the tendency due to its own weight is to immediately fall. This force is utilized as an aid to compress the mold and strip the pattern Vfrom the mold. During the above compression and withdrawal of the pattern 'from the mold, the 'l'laslr has been rolled over and is left in a position upon the press head as a means 'for support so that the trimming or coring of the mold can be expeditiously accomplished and no auxiliary attachments are necessary for holding the pressed sand in the 'flask during the roll over of the machine.

My invention further consists o'f a novel construction of molding machine in which a spiral groove is employed. so that the stripping' table will be 'removed in such a direction that a true and accurate withdrawal of the pattern 'from the mold is obtained.

It further consists of a novel construction of molding machine in which the pattern plate and 'pattern members are supported on a shaft in a swinging frame and rotated` through an are or circle around a common shaft, so that the pattern plate is caused to approach the press plate owing to the eccentric disposition of the centers around which the press plate and thel pattern plate are made to revolve. then the mold is rammed the center around which the pattern plate revolves becomes common to that of the press plate Vcentrally located on the supporting frame so that no further compression of the mold is possible.

illy invention 'further consists of a means of regulating the pressure to which the sand can be rammed.

My invention 'further consists ol"` other novel 'features of construction, all as will be hereinafter 'fully set forth.

For the purpose ofillustrating my invention l have shown in the accompanying drawing a preferred 'form thereof, since this embodiment gives in practice satisfactory and reliable results, although it is to be understood that the various instrumentalities of which my invention consists can be variously arranged and organized. and that it is not limited to the precise arrangement and organization of these instrumcntalities as herein set forth.

Figure l represents a side elevation of a molding machine embodying my invention, showing the 'flask in position and loaded with sand ready 'for being compressed or rammed. Fig. 2 represents a rear elevation of my machine, the flask being inverted and the patteins Withdrawn from the mold. Fig. 3 represents a plan view of the machine. Fig. 4 represents a sectional elevation in which the operating head is shown as swinging back to allow the mold to be pressed, turned over and stripped. Fig. 5 represents a sectional view of a portion of the machine over of the flask containing the mold and afterwards the manner in which the pattern is stri ped fioin the mold.

1. c esignatcs the side frames which are secured together by the bridge piece 2 provided with studs 3 and the tie rods 4.

5 designates a shaft j ournaled in the frame 1 upon which the operating head or swinging frame 6 is loosely mounted, in which latter a shaft 7 is mounted, said shaft 7 having mounted thereon the pattern plate 8.

9 designates a spring plate which is secured to the operating head 6 by means of bolts 10 passing therethrough and through said plate, said bolts being provided with nuts 1.1. between which and the plate 9 the springs 12 are interposed.

13 designates a clamp which is pivoted at 14 to the spring plate 9, said clam having also pivoted thereto a cam 14 provided with an actuating handle 15. The cam 14 is adapted to co-act with the seat 16 in the head of the screw 17, which is provided with a lock nut and. adjustably carried by the bridge 2. It will now be apparent that a force equal to the strength of the springs 12 must be exerted to separate the operating head 6 from the spring plate 9, it being understood th at the movement of the operating head 6 will be limited owing to the employh ment of said springs 12.

18 designates a shaft mounted in the side frame members 1, and on which are mounted the press head links 1 9, the ends of which are connected by the tie rod 20 which latter is maintained in adjustable position on said links by means of the adjusting nuts 21.

22 designates the press plate or head which is supported and retained in position by the press head links 19. The press plate 22 has cast thereon and truc at right angles to its face, the guides 23. The press head is secured to the links 19 by the swivel blocks 24, which allow the press head 22 to swing independent of the links 19 and retain a position in relation to the center 7 of the operator head, as governed by the guides 25 screwed upon the pattern plate 8. This is essential owing to the angularity of the guide faces 23 to the links 19 during the swing down of the pattern plate 8, since the press plate 22 must remain parallel to the face of the pattern plate 8. The position of the swivel blocks 24 on the links is adjusted by means of the nuts 26.

Referring now more particularly to Fig. 1, it will be seen that the center 18 around which the press plate 22 is adapted to rotate is placed at a different location from the center or shaft 7 on which the operating head 8 is mounted and around which the pattern plate 8 is adapted to partially rotate.

It will now be apparent that the links 1.9 with the press plate 23 move around the center at 18 and the pattern plate 8 moves around the shaft or center 7, so that the press plate 22 is caused to approach the pattern plate 8 as is shown by the dotted circles 27 and 28. The distance at which the pattern plate 8 approaches the press plate 22 is in an ai'c of 9()O and is directly dependent upon the position of the shaft 7, the position of which latter is regulated by means of the adjusting screw 17 carried by the bridge 2, as will be readily understood by reference to Figs. 1, 4 and 5. The adjusting screws 17 acting through the spring plate 9 which is connected with the operating head 6 can be so regulated that the fulcrums 7 and 18 may have one common center, in which case the press plate 22 will not approach the pattern plate 8 during the swing down.

Assuming now that the flask 29 is in the position seen in Fig. 1 and it is desired to press a mold, the iiask is iilled with sand 30 and the press plate 22 is brought into its position indicated in Fig. 1. The operator now takes hold of the handles 31 and draws them down encountering a resistance due to pressing the mold. The weight of the iiask assists largely in the pressing of its own mold due to the leverage at which the pattern plate 8 is acting from its center 7. As soon as the press plate 22 comes into contact with the flask 29 or has rammed the mold to such a degree of hardness as is practicable, the springs 12 owing to the force exerted on the handles of the pattern plate 8 which continues to complete'its circuit, release the operating head 6 as shown in Fig. 5 so that the center 7 is common to the center 18 and no further movement of the press plate 22 can be effected. It will thus be apparent that in my novel construction the springs 12 can be so adjusted that they will regulate the degree of hardness of the sand in the mold.

lf it is desired to simply roll over the mold, the adjusting screw 17 is run out until the operating head 6 carrying the center shaft 7 is so located that the centers of shafts 7 and 1S are common to each other. After this has taken place the press head 22 is simply lowered directly upon the flask 29, the mold having been previously rammed by hand or otherwise. The operator now allows the whole to swing down seen in Fig. 4, it being noted that the press plate 2 forms, when rolled over, a table or support for the flash 2Q, which is conveniently located for the insertion oi cores and the like previous to removal to the floor.

lteferriiig now more particularly to Figs. 6 and 7 which show the stripping table and its adjunets, it will he seen that the operating head 6 has cast or other visc secured thereon the spiral grooves 32, the patterns having been removed for clearness of illustration. lt will be seen from Fig. 6 that through the first Q00 these grooves remain perfectly true radially, and from this point they approach the center 7. The pattern plate 8 swinging on the shaft 7 has cast thereon the apertured guides 33, through which the shaft 34 extends, the end of said shaft being guided in the grooves 32, it being seen that the apertures in the guides permit the shaft 34 to move freely during the swing of the pattern plate 8. The shaft 34 has mounted thereon the stripping table 35; lt will now he understood that if the pattern plate S is swung downwardly in the direction of the arrow seen in Fig. G that the stripping table 35 will remain in perfect alinenient to the pattern plate 8 for the first 90 of its travel during which time the pressing of the placed in position, as seen in Fig. 1.

mold is accomplished so that during this interval the patterns located on the stripping table must ren'iain quite true and retain their original position, continuing the circuit for the remaining Q00 of the arc of travel the patterns are withdrawn owing to the grooves 32 departing from a true circle and causing the shaft 34 to recede towards the center 7 and thus cause the stripping table B5 to slide away from the pattern plate S.

l will now describe the manner in which a coniplete mold is made.

lf he pattern plate 8 is provided with a recess 36 which permits the use of any form of stripping plate. For purpose of illustration I have shown two half spheres 37 for patterns which are in the present instance secured to the strippii'ig table 35, the expense of a stripping plate being avoided in the ease of shallow patterns. Having determine(l upon the size of flask to be used7 the pattern plate 8 is The stop 41. serves as a means of support to keep the pattern plate horizontal during the filling of the flask with sand. During this operation the press head 22 is swung down, assumingly having served a table for the last mold. The press head is now swung up over the flash. After the first of travel is effected, the press plate 22 is hard down on the flask, or is sufficiently so that when the mold is in position no further compression of the mold can be had, since the tension of the springs 12 relax the operating head 6 so that as hereinbefore explained there is one common center to both the press plate 22 and the pattern plate 8. It is immaterial if too much sand be thrown in the flask, since the springs 12 in such a case will relax the operating head 6 when the 900 of travel was passed through, there remaining a thickness of sand above the flask which is not objectionable. The relative position of the press plate is adjusted by means of the nuts 2G and after being once adjusted no further adjustment is needed until a different size of flask is used. The stripping plate 40 is suitably apertured so that the patterns 37 may extend therethrough. The operator now tralies hold of the handles 31and pulls down the pattern plate S sliding by means of guides 25, on corresponding faces or guides 23 and the sand is compressed on the swinging down of the flask until no further movement is possible, since the springs 12 release the operating head 6 and thus allow the further travel of the flask and withdrawal of the pattern. It will be seen that as soon as the pattern plate 8 supporting the flasl; 29 is swung out over the horizontal, that the weight due to itself and the press head would cause the whole to fall rapidly around the shaft 7. T his is retarded and taken. advantage of, in that it compresses the mold and leaves little pressure to be exerted by theoperator. In Fig. 5 the position of the patterns and condition of the mold previously to the withdrawal of the patterns is most clearly seen. Continuing the circuit, the patterns are withdrawn, as has been already explained, leaving .the press plate 22, as seen in Figs. 2, 3 and 4, as a means of support for the mold. The operator now releases the clamp 13 by means of the cam 1.5 and thus allows the adjustable couiiterbalance 38 to cause the operating head G to rotate to the position seen in Fig. 4, so that the operator is freeto trim the mold or insert any core as may be necessary before placing on the floor. A pin 39 under the press plate 22 prevents the roll-over of the flask with mold during'the trimming of the mold, but with sufficient clearance to allow of the angularity of the press plate 22 during the roll over. rl`he1nold being no'w removed the pattern head is swung back to itsoriginal position and firmly secured anew by means ofthe clamp 1.3 the same process just described is repeated for similar molds.

It will now be apparent to those skilled in this' art that l have -devised a novel construction of a molding machine which embodies the features of advantage enumerated as desirable in the statement of invention and its adjuncts, after which and the .foregoing description and while I have in the present instance shown and described a preferred embodiment thereof which will give in practice satisfactory and reliable results, it will be understood that it is susceptible of modification in various particulars without departing from the spirit or scope of my invention or sacrificing any of its advantages.

Having thus described my invention, what l claim as new and desire to secure by Letters Patent, is

1. ln a molding machine, the combination of a rotatable pattern plate, a rotatable press plate, said plates having their centers eccentric to each other, and means whereby the center around which said pattern plate revolves becomes common to that of said press plate.

2. In a molding machine, the combination of a rotatable pattern plate, a rotatable press plate, said plates having their centers eccentric to each other, means whereby the center around. which said pattern plate revolves becomes common to that of said press plate, and means for regulatingl thc pressure to which the sand can be rammed.

3. In a molding machine, a supporting member, a swinging member carried thereby, a ioll over pattern plate movably carried by said swinging member, a spring plate rigidly attached to said swinging member and detachably secured to said supporting member, and a cushioning device for said swinging member.

4. In a molding` machine, a supporting member, a member pivoted thereto, a roll over pattern plate carried by said swinging member, guides on said pattern plate, a press plate, guides thereon co-acting with said pattern plate guides during the roll over of the mold, links pivoted to said supporting frame, and means for adjustably securing said press plate to said links.

5. ln a molding machine, a supporting member, a member pivoted thereto, a roll over pattern plate movably carried by said pivoted member, a press plate rotatably carried by said supporting member', and means for changing the relative position of the center around which said pattern plate revolves to cause said press plate to form a support for the mold when the latter is rolled over.

6. In a n'iolding machine, a supporting member, a member pivoted thereto, means for preventing relative movement of said members, avroll over pattern plate pivoted to said pivoted member, a press plate rotatably carried by said supporting member, and a stripping table carried by said pivoted inember and having an eccentric movement thereon during a portion of its travel.

7. In a molding machine, a supporting member, a member pivoted thereto, means for preventing relative movement of said members, a roll over pattern plate pivoted to said pivoted member, a press plate rotatably carried by said supporting member, a stripping table carried by said pivoted member and having an eccentric movement thereon during a portion of its travel, and a counterbalance for said pivoted member.

8. In a molding machine, a supporting member, a member pivoted thereto, a spring plate, a tension device connected with said plate and said pivoted member, adjustable means for locking said plate to said supporting member, and a counterbalance for said pivoted member.

9. In a molding machine, a supporting member, a member pivoted thereto, a roll over pattern plate rotatably carried by said pivoted member, and a press plate rotatably carried by said supporting member, the center of rotation of said pattern plate and said press plate being in different planes.

10. In a molding machine, a supporting member, a member pivoted thereto, a roll over pattern plate rotatably carried by said pivoted member, a press plate rotatably carried by said supporting member, the center of rotation of said pattern plate and said press plate being in different planes, and means for adjusting the relative distance of said centers.

11. In a molding machine, a supporting member, a member pivoted thereto, a shaft mounted in said pivoted member, a roll over pattern plate mounted on said shaft, guides carried by said plate, a second plate mounted on said shaft and movable in said guides, and pattern members carried by said second plate.

12. In a molding machine, a supporting member, a member pivoted thereto, a shaft mounted in said pivoted member, a roll over pattern plate on said shaft, guides carried. by said pattern plate, a second plate mounted on said shaft and movable in said guides, pattern members carried by said second plate and adapted to pass through said pattern plate, and means for causing the automatic withdrawal of the patterns as the mold is inverted.

13. In a molding machine, a supporting member, a member pivoted thereto, a roll over pattern plate carried by said pivoted member, a flask carried by said plate, and means for automatically ramming the mold duringl the roll over of said. plate.

14. ln a molding machine, a supporting member, a member pivoted thereto, a roll over pattern plate carried by said pivoted member, a 'flask carried by said pattern plate, a stripping plate carried by said pattern plate, guides on said pattern plate, a second plate mounted in said guides, pattern members carried by said second plate, said pattern plate having spiral grooves, and a shaft co-acting with said grooves and adapted to actuate said second plate, whereby when said pattern plate is revolved around said shaft said pattern members remain stationary until the mold is compressed.

15. ln a molding machine, a supporting member, a counterbalanced member pivoted thereto, a roll over pattern plate carried by said pivoted member and normallyr maintained horizontally, a stripping table carried by said plate, a press plate pivoted to said supporting member, the pivotal point of said pattern plate and press plates being in dillerent horizontal planes, and means lor causing the automatic ramming of the mold during the `first interval olthe roll over o1 saidpattern plate, and the withdrawal of the patterns during the second interval of the roll over.

16. ln a molding machine, a supporting frame, a member pivoted thereto, a clamp, a roll over pattern plate carried b y said pivoted member, a tension device connecting said pivoted member and said clamp, a cam carried by said clamp, and a member adjustably carried by said supporting member and coacting with said cam.

17. In a molding machine, a combination of a rotatable pattern plate, a shaft on which said plate is mounted, a rotatable press plate, a shaft upon which said press plate is mounted, and means for adjusting the relative location of said shafts with respect to each other whereby the center of rotation of said plates may be varied.

18. In a molding machine, a supporting member, a member pivoted thereto, a spring plate, a tension device connected with said plate and said pivoted member, and means for locking said 'plate to said supporting member.

19. 1n a molding machine, a rotatable pattern plate, a rotatable press plate, and means for causing the relative movement toward and away from each other of said plates during their rotation.

JOHN R. MOORHOUSE.

Vitnesses JAMns J. DOYLE, HARRYSUMPTER.

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