US1010023A - Molding-machine. - Google Patents

Description

E. C. COVERT. MOLDING MACHINE.

APPLICATION nun AUG. 21. 1011.

1,010,023. Patented Nov. 28, 1911.

2 SHEETS-SHEET 1.

B. G. COVERT.

MOLDING MACHINE. APPLIOATIOII FILED AUG. 21, 1911.

Patented Nov. '23, 1911.

2 SHEETS-SHEET B chinc adapted for hand EDSON C. COVERT, 01? CHICAGO, ILLINOIS, ASSIGNOR PATENT OFFICE.

TO AMERICAN STEEL FOUNDRIES OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

MOLDING-MACHINE.

I Specification of Letters lntent.

Patented Nov. 28, 1911.

Application med August 21, 1911. -Serlal in. 645,239.

To all whom i! may concern:

Be it known that l. Eusox (lovnn'r, of Chicago, county of (look, and State of Illinois, have 'inu'nlml certain new and useful Improvements in Molding- Machines, of whlchthe followin is a specification.

My invention relhtes to the art of molding and has particularly reference to a machine adapted for use In the handling of flasks during the making of the molds.

My invention relates particularly to a maing large and heavy flasks wherein castings of many hundred undswciight are, formed. It is contemilgted in he employment of a device as c ein shown thatallask may be set, sand flas with one cycle of operations.

One of the principal obiyects of the inven tion is to produce a mac llllellf this char-- vide such a-construction that the princlpal portions the machine will be balanced by the equal istribution of the weight of the pattern plates and flasks so that but little outside power will be required for the operation of the machine, while at the saiuc time each pattern plate has an unequal distribution of its weight. so that when free to rotate it is automatically brought to the desired positions.

.My invention will he stood by reference to drawings, wherein,

Figure 1 is an end elevation partly in section, showing my improvcd' molding machine; Fig. 2 is a front elevation also partly more readily underthe accompanying in section, showing the same machine, and

- wheels 13 and 13, the 55 Fig. 3 is an enlarged detail of the mutilated gear required for the operation of the device.

Referring more particularly to the drawings it will be seen that on the supports 10 I mount a plurality of supporting wheels or rollers 11, which canry the weight of the superposed machinery. secured to each end thereof large cast rims 0 which bear upon the wheels orrollers 11, the wheels 11 appliied, pi-operly rammed or jolted and thecontained mold removed, all in shaft 12" and A furtlfierobject of my invention is to proeach the c A hollow shaft 12 has b being grooved therefor. The wheels 13 and 13 are preferably rotated by hand although they may be driven by power suitabl applied if desired. The large wheels 1' and 13, are provided with radial spokes 14, terminatin at their inner ends in a hub 15. The spo es of the wheel 13 carrfyjbcarings 16, within which are mounted sha ts 17, having beveled pinions 18, 19 on their ends, the

'pinions 19, as shown in Fig. 3,'being |nutilated,-or having a portion of the gear teeth removed, for apurposc later to be described.

It will be seen that there nre'in the prescnt instance four shafts 17, four pinions 18 and four pinions 19 The pinions, 18 all mesh with a'beveled pinion 20, keye'dto hollow shaft 12*.which projects into the end of hollow 'shaft12, through support 22. This gear 20 remain stationary durin the operation of the machine.

[he wheels 13 and 13 near their eriphcries, are rovided with elongated armg slots 23. o'unted' within the slotted openings 23 are shafts 24, each of which has a pinion 25 secured to one end thereof, .said pinion adapted to mesh with a corres 0ndmg miitilatcd pinion 19. These sha ts 24 carry metal pattern plates 25', the pattern plates having on their upper faces the design or shape of'the casting to be produced. '1 ese jections or lugs 26 so arranged that the pattern plate, w ien rec of a superposed flask, will normally right itself,.as shown in the positions A; B and C of Fig. 2. These lugs when the pattern plate is in osition not merely .as counter-weights, alt vough they provide legs when the plates any purpose. i

t-wil be-scen from the above description that the shafts 17 and connected earin provide for parallel motion of the different pattern plates as the wheels 13 and 13 rors 19, there willbc a portion of the revoution' of these wheels during which the gears 25 are not in mesh with the gears 19 so that the shaft 24, with its may-rotate freely. Aflask 27 is shown on pattern plate, being secured thereto by amps 28. These clamps are actuated y means of fluid pressure cylinders 29, connected by an air hose .30, to the'shaft 12, which is hollow and which is connected through shaft 12' to a suitable source of pattern platesaro provided with propattern plate-,-

are removed for late. and that due to the mutilation of the fluid pressure, not shown. This clamp is shown and described in detail in my copending application, Serial No. 648 789' filed Sept. 11 1911, entitled Clamps for flasks, In order to provide sand to the flasks, I may use sand reservoirs as shown in Fig. 2.

jolter by means of cables 36, thme'cables 20 P assing over a sleeve 37, which sleeve incloses shaft 12. On the end of sleeve 37 is mounted ear 37 with which a pinion 37" is in mes pinion al" is in turni'igidl mounted on a stub shaft passing throng wheel 13, the'pinion 379 being mounted on the outer end of this stub shaft. Pinion 37 is in mesh 'with gear 37 which is rigidly mounted on shaft 37' on the outer-end ofwhich is rigidly mounted pinion 38 in mesh with rack 39. Shaft 37' at its position between gear 37 and pinion 38 passes, through bracket 22 and on its inner end extends into the end of shaft 12. Back'39 is connected to the piston of an air cylinder-40; In order to raise or lower the grid, airis admitted to one or the other of the sides *of the piston, this actuating the rack and causing the rotation of the sleeve'37 (through the gears and inions just described) and causing the win ing or unwindin -of the cable thereon.

In order to provi e for the removal of the flasks and contained mold, I provide a hydraulic cylinder 41, having a platform 42 thereon, this platform carrying tracks 43, registering with permanent tracks *4, on which a car 45 is adapted to be carried. It

will be seen that the shafts 24 areadapted for movemenlgwithin the slotted bearings 23, and in order to restrain the shafts and keep them in their proper positions; I provide dplugs or fillers 46, which may be inserte into and fill the portions of the slotted bearingsnot occupied by, the} ends of shafts 24. l

The operation of the machine is asfollows: It will be seen that in the position I) a flask and pattern plate are m reve position and a, car 45 on platform 42 is ele vated by the action of cylinder 41 to. receive the flask and remove the same after the releasing of theclamps 28. After the flask is removed, the pattern late 25', due to the wei ht oflu 26, wil automatically right itse f. A fias is then placed onthe pattern plate by an suitable means suchuse crane *a'nd remain for automatically mainta and after being suitably fastened thereon, the device 15 caused to rotate. While in the position D, the. gears 25 and 19 are not m mesh, due to t e mutilation of gear l9. Howeve as soon as rotation of the device has be e gears are brought into mesh mesh until position G is reached. When the device has .been rotated until we ask is beneath the sand hoppers, sand is dmitted to fill the flask and the rotation is then continued until sition C is reached. At this oint the olter 34 is elevated, t{1us lifting t e weight of the flask and pa tern plate and rmitting the remova o the fillers46. he 3:51; agdbecontained 31a dda1 then joltteld,

e' in wer an y upon e top I)? the sail After being j o1ted sufliciently, the jolter is elevated to permit the insertion of the fillers 46 and the rotation again continued. However, as the gears 19 and 25 are not in mesh due to the mutilation of the former, the flask and the pattern plate will automatically turn bottom up, due

to the fact that the flask is heavier than the pattern plate. In this position the flask will arrive at position D, and after being unclamped, will 'be removed y the car 45.

It will be understood that the operation just described deals witlilonly one moldin operation and that while the steps descri are being-carried out, the same steps are also beingcarried out in pro r v sequence u"n pther flaslrsjcarried by t 0 same ma- .c' inc and that thd operations are continw' one. It 'will alsdbe understood that the mechanism herein shown is only typical and that many modifications may be made therein without departure from the spirit of my invention.

Iclaim: I 1. In a device of the class described, the

means for automatically maintaining said patte'rn plate in a succession of parallel planes during the rotation of said member, substantially as described. a

2.. In a device of the class described, the combination of a rotatable member, a-pattern plate carried by said ember, means said pattern plate, in a succession of p a] el planes durng the rotation of said member, and means for allowin the free rotation of said pat- ,te'rn plate uring a portion of the rotation combination of a'rotatable member, a pattern plate carried by said member, and

of said member, substantially as described' B. In a device of theclass described, the combihation of a rotatable member, a pattern plate carried ,by said member, means for automatically maintainin said pattern late in a succession of paral e1 planes durin the rotation of saidinem means for al owing the free rotation of said pattern plate on its on axis during a portion of the rotation of said member, and balancing means whereby said pattern plate, when free to rotate, will-automatically adjust it-- self in a predetermined position, substantially as described.

4. In a device of the class described, the combination of a rotatable wheel, a pattern plate rotatably mounted on said wheel, a gear on said pattern plate, and a second gear mounted on said wheel and in mesh with the gear of said pattern plate whereby the latter will be maintained in a succession of parallel planes during the rotation of said wheel, substantially as described.

5. In a molding machine, the combination of a rotatablewheel, a pattern plate rotatably mounted' on sa'id wheel, a gear associated with said pattern plate, a second gear mounted on said wheel and in mesh with the gear of said pattern plate, and means for rotating said sccond gear whereby said pattern plate will be maintained in horizontal position during the rotation of said wheel. substantially as described.

6. In a molding machine, the combination of a rotatable wheel, a pattern plate rot-w tably mounted on said wheel, a gear associated with said pattern plate, a second gear in mesh with the gear of said pattern plate, it rel" "ively stationary gear, and means connecting said stationary gear with said serond gear whereby when said wheel is rotated said pattern plate will be maintained in a succession of parallel planes, substan tially as described.

T. In a molding machine, the combination of a rotatable wheel, a plurality of pattern plates rotatably mounted on said wheel, and means for maintaining said pattern plates in parallel positions during the rotation of said wheel, substantially described.

.8. In a molding machine, the combination of a. rotatable wheel, a plurality of pattern plates rotatably mounted on said wheel, a gear associated with each of said pattern plates, a plurality of gears carried by said wheel and in mesh with the respective gears of said pattern plates, and means for aetw ating the gears carried by said wheel tlllt' ing the rotation of the latter whereby said pattern plates will be maintained in parallel positions, substantially as described.

9. Ina molding machine. the (ZOII'lblIlllllUIl of a rotatable wheel. a pattern plate rotatably carried by said wheel, a gear associated with said pattern plate, a'second gear carried by said wheel and in mesh with the gear of said pattern plate, said gear having a portion of its periphery mutilated, and means for actuating said second gear dur' ing the rotation of said wheel whereby said pattern plate will be maintained in a succession of parallel planes while said second gear is in mesh with the gear of said pat tern plate and said pattern plate will be free to rotate when the mutilated portion of said second gear is brought into register with the gear ol' the pattern plate, substantially as described.

10. la a molding machine, the combination of a frame, a rotatable wheel carried by said frame, a pattern plate rotatably mounted on said wheel, a gear associated with said pattern plate, a shaft carried by said wheel, a pair ol gear-son opposite ends of said shaft, one of said gears being in mesh with the gear of said pattern plate, and a relatively stationary gear in mesh with the gear mounted on the opposite end of said shaft whereb when said Wheel is rotated said pattern p ate will be maintained in a succession of parallel planes, substantially as described.

11. In a molding machine, the combination of a rotatable wheel, a pattern plate rotatably mounted on said wheel, removable means for maintaining the axis of said pattern plate at a pre-determined distance from the axis of said wheel the removal of said means allowing radial movement of said pattern plate, and means for jotting said pattern plate when the wheel is rotated to a pre-determined position and said removable means are withdrawn, substantially as described.

12. In a molding machine, the combination oi a rotatable wheel, a pattern plate rotatably mounted on said wheel. means for supplying sand to said pattern plate, means for jolting the sand on said pattern plate when said wheel is rotated to a pro-determined position, and packing means adapted to be lowered on to the sand on said pattern plate, substantially as described.

13. In a molding machine, the combination of a rotatable wheel, a pattern plate rotatably carried on said wheel, removable means for holding said pattern plate in a pre-detern'iincd radial position, means for supplying sand to the surface of said pattern plate, a sand packing grid, means for lowering said grid on to the sand on said pattern plate when said wheel is rotated to a predetermined position, and means for jolting said pattern plate on the withdrawal of said removable means, substantially as described,

l-l. molding machine comprising, in combinaticn. a base, a multiple pattern carrier movable with relation to said base, means for n'iaintaining said patterns in parallelism during a portion of the travel of said carrier, means for supplying sand to said patterns, means for jolting sand on said pattern, and means for drawing said patterns, substantially as described.

15. A molding machine, comprising in combination, a multiple rotary pattern carltll) rier movable with relation to said base, 1

allelism during a portion of the travel of said carrier, means for supplying sand to said patterns, means for jolting sand on said pattern, and means for drawing said patterns, substantially as described.

16. A molding machine comprising, in con'lbination, a base, a multiple rotary pattern carrier mounted on said base, said pattern carrier including parallel motion means whereby said patterns are maintained in parallel relatibn, flasks for said pattern. means for securing said flasks over said patterns, means for supplying sand to said flasks, means for jolting sand in said flasks, and means for drawing said patterns, substantially as described.

17. A molding machine com rising, in combination, a base having anti-Eietion elements thereon, end wheels carried by said anti-friction elements 'on said base, said wheels being joined by shafts, pattern plates carried by said shafts, and a parallel motion device carried by one of said wheels and arranged to maintain said pattern plates in parallel relation during a portion of the travel of said Wheels, substantially as described.

18. A. molding machine com rising, in combinat on, a base havlng antinotion elements thereon, end wheels having radial slots rotatably mounted on said anti-friction elements, shafts connecting said wheels and seated in said slots, pattern plates carried by said shafts, and means for maintaining said pattern plates in parallel relation during a portion of the travel of said wheels, substantially as described.

19. A molding machine com rising, in combination, a base having antiriot-ion elements thereon, radially slotted wheels cooperating with said anti-friction elements, shafts seated in slots in said Wheels, said shafts carrying pattern plates and being provided with a gear on one end thereof, mutilated gears carried by one end wheel and meshing with the ears on the ends of said shafts whereby said pattern plates are maintained in parallel relation during a portion of the travel of said Wheel, substantially as described.

I EDSON C. COVERT. Witnesses:

J. A. Hrooms, WM. P. Anson.

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