US1558577A - Machine for filling molds - Google Patents

Description

Oct. 27, 1925.

K E. O( BEARDSLEY ET AL MACHINE FOR FILLING MOLDS 3 Sheets-Sheet 2 Filed Apxfl 25 Oct. 27u 1925 E. O. BEARDSLEY ET AL MACHINE FOR FILLING MOLDSV y Filed April 25. 1923 5 Sheets-Sheet .Patented oa. 27, 1925.

UNiTsoysTfArEs PATENT oFFIcE.

ELMER O. BEARDSLEY AND WALTER PIPER, OF CHICAGO, ILLINOIS, ASSIGINORS T THE IBEARDSLEY & PIPER COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION 0F Immers.

:erlernten ron FILLING MoLDs.

Application tiled April 25, 1923. Serial No. 634,445.

To all whom t may concern:

Beit known that We, Emma O. BEARDS- LEY and WALTER F'. Pirna, both citizens of the United States, f od residents of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful I'mprovements in Machines for Filling Molds, of which the following is a full, clear, and exact description.

The invention relates to machines for lilling molds and more. particularly to that type in which sand isv projected at high speed into the flasks.

One 'object of the invention is to provide improved means for supporting the sand projector or slinger, so lthat it can be easily moved over flasks and particularly in those instances where the longitudinal movement of the projectorl necessary to project sand into all portions of the mold, is comparatively short. *Another object of the invention is to pro-ride improved mechanism cooperatively arranged With the movable projector for carrying {iasks to and from the projector. y@ther objects will appear-.from the following description:

The invention consists in the several noyel features hereinafter set forth and more particularly deiincd by claims at the conclusion hereof. l

lu the drawings Fig. 1 is a side elevation of a machine embodying the invention,

parte lacing` shown irl-section. Fig. 2 is a section taken on line 2-2 of .Fig l. Fig.

' 3 is a longitudinal section through the prof jector. and the supporting `arm. or j ib. Fig. `4 is a transverse section taken on line of Fig; A1. .Fig 5l is a transverseV section through the projector. Fig. `Gis aplau.

Figure 7 is a' detail View. partly in 'section.

of the drive mechanism for the sand pulley belt.

rlhe machine illustratedfcomprises u hollow supporting column 1t) on the upper end r of which is pivotally mounted a supportingY bracket 11. This breekt-itv comprises an upper section 12 and a lower section 13 between which are confined suitable ball-bear ings'14 formingan anti-friction bearing for supporting the bracket 11, so that it can be freely rotated in a horizontal plane. Sections 12 and 13 are secured together by bolts 15 and arev formed so as toenclose 'bearings 1.4 and the upper end of column l0 and to retain the bracket on thecolumn. The base 1601i column l0 is fixedly secured to the molding room lioor by bolts 17.

The machine comprises a jib or arm 36, a sand projector including a casing or stator 38 and a rotor 39 provided with a combined projector and shear-blade 40, a shaft 41,` to which the rotor is secured, a tubular member 37throughwhi`chshaft 41 extends,.and an electricl motor 42, the casing ot' which is fixed to arm 36 and to the rotor of which (not shown) the projector 41 is secured.

An endless belt 46 is adapted to convey sand received from an overhead stationary chute` 44 and to deliver it to the projector 4casinol 38 and to the rotor 39. This belt 46 is carried by a drive-pulley 47 adjacent the electric-motor and an idler pulley48 adjacent the projector casing. Both of these pul leys are mounted `-to move with arm 36. The idler pulley 48 1s supported by bearings 48 which are fixed to a yoke 38 which rigidly connects the casing 38 and tubular armrneinber 37. Drive-pulley 47 is mounted on a stationary shaft 58 which is supported by a bracket 59 and a gearcase 57. both of Whichare tixedly secured to the sides of a housing-49. The latteris lixedly secured to member 37 of arm' 36 and to the casing of '85 motor 42, so that the projector, motor ,and

'sand-feeding belt may be shifted together, as hereinafter more fully s'etforth. 'Pulley r47. which drives the sand-feeding belt 46,

is drijven by gearing comprising a pinion 51 in housing 49 and fixed to shaft 4l; a gear 52 on atransverse shaft 53,; al pinion 54 on vshaft 53; an idler 55 meshing with pinion V54 and with 'a gear 56 fixed vto the hub of pulley 47. Gear-case 57 encloses pinion 54 and gears 5,5 and 56. An upwardly flared chute 60 is supported over the inner end of belt 46 to direct sand from chute 44 .onto belt 46 in all Ipositions of arms'36.4 Chute '60 is secured to guidefbars 70 which are disposed over belt 46 and are supported by rods 73 which are supported by a clamp 71 on member 37 and a. bracket 72, whichv is fired to the casing of motor 42. 'The central portion ofthelower reach-of belt 46 is supported by an idler pulley '46 so that,

the belt will clear the. suppprting bracket loa ' el bracket 46a. which is iixedly secured to -nbularmember 37 of arm 36. Handles 6l provided on the projector casing 38 uoreby the operator may shift the arm or jlb T15, tovether with all ot the parts earfait rieti there y. 'l he connectlon between arm 36 comprises ahanger'62 in which tubular member 37 and arm 36 are rigidly clamped; a stud 64,

having its airis parallel with lthe axis ot the Aprojector--shatta disposed above arm 36 and extending through han er 62 so that the hanger and said arm Will be pivotally sustained from said stud; a bracket 65 rigid with stud 64, bowed around arm 36 and ex tc ,ding under housingl 49; two pairs ot parallel suspension links 66, the upper end et each link being pivotally sustained by a bolt 6T which is supported in a standard 68 rising from and rigidly secured to the supporting bracket 'l17 which is pivoted to swing horizontally on the main supporting column lO; and eross-rods 69 carried by the lower ends of said pairs ot links respectively and extending through lugs 65 on bracket so that bracket 65 will be movably sustained by links 66. A roller 80 is mounted on housing 49 and is adapted to ride in an arcuate groove 8l :termed at one end ot bracket 65. This roller and groove connecj tion permits the arm to be swung;f about the asis ot stud 64 and prevents excessive 'strains on and breakage of said stud from which the arm and parte carried thereby are suspended.

Normally, arm 36 is suspended from icket 65 and stud 64, so that the projector .li be positioned rto cause the sand to be `v'ejected vertically downward. ln iilling ifa with wide retaining bars` it is desirailc to slightly angle the line of delivery to A 'eet the wads and pack sand under the han or undercut spaces. The suspension l nger GQ permits the operator to rock arm around the horizontal axis of stud 64 so that the projector casing, motor 4Q. ho f ng 49, belt 4G and chute 60, all of nich are cooperatively mounted on said arm. will be 'shifted in unison suciently to vary the line ot delivery ot the sand to causo it to he proiected under the retaining bars in the flask. This rocking of the projector and its associated parts is accomplished by grasping; and shitting the handles 6l. llVhen the handles are released., the arm will move by gravity 'to its normal position under stud 6l.. so that the Wada of sand will be dis` charged vertically, except. when the arm is rocked laterally by the operator. The roller 8f) in groove Si, prevents excessive strains on .longitudinal sides.

the stud (i4. I n

The projector' supporting-arm 36, being supported by the horizontally rotatable fh is parallel with the axis ot arm S6` bracket ll, can be swung horizontally. around the axis of colmn 10, Yso the opel ator can shift the projector laterally with'- out varying the angle of delivery. ot the sand when desired and to project sand into ditterent portions lengthwise of the flask, by grasping handle 6l and swingingY the arm, bracket 65, suspension link G6 and bracket ll horizontally around column l0.

In filling iasks in which the crosswiso dimensions are comparatively short. it has been 'found possible to dispense with av jointed pair ot horizontally swinging arms for 'supporting the projector. b v providing' suspension means. such as links 66. which permit. the projector carrying' arm 3G to be shiftedlongitudinally. In filling thc flasks. the operator, by means ot handle 6l, can move the arm inwardly or outwardly' to work the projector over and crossvvise of the flask to till all portions ot the fiask This suspension linkage beine' composed ot parallel nairs of links, permits the proiector to be shifted crosswise of the flask without substantial variations in the angle of deliverv of the sand. A further characteristic of this suspension linkao'e is that the projector, when it is normally positioned centrally over the a'sk. will. after it has been shifted radially inwardly1 or outwardly, automaticallv move back hv gravity to its normal central position. thns relieving the operator ot the necessity of retractiner the proiector to said position.

The mechanism thus tar described. exempliiies a structure in which the driven projector is supported bv an arm which is suo? ported so it mav be moved latcrallv lenefth wise ot the iia'sk and shifted lonfitndinallv crosswise ot the iiask. while the sand is beine" projected at a siibstantiallv non-variont ano-le ot deliverv: also a structure of that. character in which provision is made for slifrhtlv varvinof Vthe anale of deliverv when sand is to he projected in nndere'nt places or cavities; also a. construction .in 'which a sinole arm-carrvina the proieetor. driving mechanism for the. projector and driven sand-eeding mechanism are all mounted on an arm which is pivotallv movable in a horizontal. pla-ne and bodily movable lonnitudinallv7 to permit the necessary movement of the projector to till all portions of the flasks.

in filling fihsks by the nroiectorhereinbetore described. it is desirableV that they be delivered so that the flasks Will be approximately' centralh7V disposed below the proiector while the latter is `oosition.v so that in lillina the {iask it will be necessary to move the projector only from a point above the center of the flask to its llt is also otherwise advantageous in a sand proiector which is mounted on a' stationary column to have the flasks deliver at a substantially uniform point beneath 'the projector and to facilitato 'the bringingl ol' the flasks into receivingr position and their removal after they have been tilled. For these purposes, a turn-v table 90, preie'ablv made ot' a sheet ot' boiler-plate. is mounted to rotate concentrically around the axis ot column 10. A. ball-bearing' 91 supports the inner portion of this table and a series ot' rollers 92 Amounted in ln'acliets 955 respectively support the outer margin oi the turn-table. A stationary angle iron ring 94 is fixed to the `floor and an angle iron ring( 95 is fixed to the underside oi" turn-table 90. so that the vertical flanges of these rings will lap one another to exclude sand from the space hetween the turn-table and the floor. Flask `carriers 96 oit any suitable construction and in desired number are secured to the turn-y table and are rotatable therewith, so that mounted ona bracket lOl fixed to column l0; arpinion 102 on 'the motor shaft; a gear 103 meshingr with said pinion and fixed to :t shaft 104 also mounted in said bracket; a bevel-pinion 105 fixed to shaft 104 and driven by tcrear `103; a bevel-gear 106 meshing `with pinion 105 and fixed to a 'vertical' shaft 107 Whicn is also mounted in bracket 101: a pinion 10S fixed to the lower end of shaft 107; and an internally toothed gearrinp' 109., which is fixed to the upper tace of turn-table 90. A housing' 110 encloses this gearing and motor and is also extended to cover the rear-ring; 109 to er-tclude sand therefrom. This mechanism eX- emplifies an electric motor and reducing:r gearing for constantly driving' the turntable 00 :tor feeding; flasks to the projector.

The operation ot the proicctor, its driving' mechanism and the sand-ttwding;l belt, is substantially the same as act 'forth in Letters Patent No. 1.408.403 granted to us March 7, 1922.

lin operation. the operator moves the projector laterally and longitudinally ot the flask the pivotal connection between bracket ll and column l0 permitting' this to be donc. The projector is-movable radiali),y inward or outward by the operatfn'. the suspension linkage between brackets ll and permitting this'to be done. i When necessary, the

ltive relation.

projector vcan .he rocked' laterally to slightly var v its angle oit delivery. the hzing'er 62 and stud Gat permitting' that to bc done. ln all ot those movements. thc motor ft2. projector and sand-feeding' belt remain in cooperalVhcn the turn-table 00 is in operation, one operator vfill be stationed adiacent` the projector and others will place empty flasks on the carriers 00 approachiim' the 'projector and will remove the .filled flasks from the carriers. lhe operator at the projector Will manipulate. handle (Si to move the projector longitudinally and tranf-:vcrselv of the flask, to till all portions thereof. while the flasks arc moving' with the turn-table 90. The projector-supportina arm 30 and the turn-table are coaxial, so that the operator may easily move the projector back and tortli lengthwise of the mold. Arm 36, beine' horizontally movable around an axis coincident with the axis of the turn-table` can be shifted throughout a 'full circle` so that the pro- 'jector may be positioned at any desired point where it is desired to lill the flasks. Furthermore, this arrangen'ient permits the. operator -to keep the project-o1' over the flask as long asilnay bc necessary to properly fill it.-

The invention exemplifies a molding machine ot the sand-projector type. in which a single projcoter-carrying arm is movable pivotally and lonnitm'limillv'so that. in some instances. a pair of pivotallv connected arms maybe dispensed with. Also a structure ot this character in which the single arm is carried by suspension links which permit longitudinal shitt ot" the arm and which are automatically restored by gravit-y to a central position.T The invention also exemplifies a machine ot this type in which the projector carrying' crm swings concentrically 'with the flrnks on a turn-table. The machine. as a whole' mal-tes it possible to till. flasks by the m'oiectinf;method with great facility and with a low labor cost.

The invention is not to be understood as restricted to the details forth. since these may be modified Within the scope of the appended claims. without departing' from the spirit :md ,scope ot the invention.

Having thus described the invention, 'what we claim as new and desire to secure by Letters Patent, is: i l. ln a molding' machine. the combination of an arm,l a sand projector mounted on and movable with said arm, a motor for driving the projection means tor conveying-sand to the projector, and 'a link-suspension tor the arm pivoted to permlt longitudinal moven'icnt tliorco'l",

il?. ln a moldingmachine. the cf lnhination ot an arm, a sand 'rojector mounted the arm comprising substantially parallel links pivctepl to permit longitudinal lmovement ot the arm. A

3. In a molding machine` thefcombination of an arm, a sand projector mounted on and movable Iwith said arm, a motor ior driving the projector7 means for conveving sand to the projector, and a suspension tor the l arm comprising vertically extending links pivotedv to permit longitudinal movement of the arm.

4. In a molding machine, the combination of an arm, a sand projector mounted on and movable'with -said arm, a motor for driving the projectonmeans tor conveying sand to the projector, and a suspension for the arm to permit longitudinal movement thereof, comprising vertical links pivoted to swing across their Vertical centers so the arm Will return by gravity to its normal position.

5. In a molding machine, the combination of anarm, a pivotal connection for permitting thel arm to swing horizontally, a sand projector mounted on the distal end of and movable with said arm, a motor for driving the projector,I means for feeding' sand to the projector and a link-suspension for the arm pivoted to permit longitudinal movement thereof. l

6. In a molding. machine, the combinat-ion of an arm, a pivotal--connection fon permitting the arm to swing horizontally, a

sand projector mounted on the distal endl of and movable with said arm, a motor for driving the projector, means for feeding sand to the projector, and a susnensionyi'or the arm comprising substantially parallel links pivoted' to permit bodily longitudinal movement of the arm.

7. In a molding machine, the cmbination ot an arm,- a pivotal connect on for permitting the arm to swing horizontally, a

sand projector mounted on the distal end of and movable with said arm, a motor for drlvmg the projector, means for feeding -sand to the projector, and a suspension for the arm comprising vertically extending links pivoted to permit bodily longitudinal movement of the arm.

8. In a molding machine, the combination of an arm, a pivotal connection tor permitting the arm to swing horizontally, a sand projector mounted on the distal end of and movable with said arm` a motor for driving the projector` means for feeding;l sand to the projector, and a suspension for the arm to permit bodily longitudinal movement thereof compris-ing vertical links pivoted to swing across their vertical centers so the arm will return b v gravity to its normal position.

9. In a molding` machine, the combination of an arm, a sand jn'ojcctor'mounted on the distal end of and movable with said arm, a motor for driving" tlie' projector, mounted on the. other' end otsaid arm. means for feeding sand tothe projector also mounted on said armanda link suspension for tl.n arm pivoted. to pei-'mit hodilvif'zn gitut 'n' l movement thereof.

10. lua moldingmachine,-the conv-bination of an arm, a sand projector mounted on the distal end of and movable with said arm, a motor for'drivin'g the projector, mounted on thel other -end ojf said arm, means for feeding sand to the projector also mounted on said arm, and a suspension tor the arm comprising substantially parallel links pivoted to permit bodily longitudinal movement of the arm. i

.11. In a molding machine, the combina-v n mounted on the other end of -said arm,

means for feeding sand to the projector also mounted on. said arm, and a link suspension for the arm to permit bodily longitudinal movement thereof, comprising vertically extending links.

12. In a molding machine, the combina tion of an arm, a sand projector mounted on the distal end of and movable with. vsaid arm,.a motor for driving the projector' mounted on the other end of said arm, means for feeding sand tothe projector also mounted on said arm. and a suspension for the arm to permit bodily longitudinal mo vement' thereof comprising vertical links piv oted to swing across their vertical centers so the arm will return by gravity to its normal position. f

13. In a molding machine, the combination of a fixed support, an arm, a sand projector mounted on said arm, a pivotal con nection on said fixed supportl to permit the arm to swing horizontally, a motor for driving the projector mounted on the arm, means for feeding sand longitudinally ot the arm to the projector, driven by the motor, and a link suspension between the piv otal connection and thearm pivoted to permit bodily longitudinal movement thereof.

14. In a molding machine, the combination of a fixed support, an arm, a sand projector mounted on said arm, a pivotal connection on .of a fixed support, an arm, a sand projector Miti sand longitudinally of the arm to the proje`c,

tor,.driven'by the motor, and a sus nsion between the pivotal connection and t e .arm to permit .bodily longitudinal movement thereof, comprising vertically extending l 16. a molding machine, the combination ot a iixed support, an arm, a sand-projector mounted on said arm, a pivotal connection on said fixed support to permit the arm to swing horizontally, a motor for driving the projector mounted on the arm, means for feeding sand longitudinally of the arm to the projector, driven by the motor, and a link sus ension between the pivotal connection anY the arm to permit bodily longitudinal movement thereof, comprising vertical li ks pivoted to swing across their vertical cen rs so the arm will return by gravity to its normal position.

17, In a molding machine, the combination of an arm, a sand-projector mounted on said arm, a pivotal connection for the arm susped the arm so it can be rocked laterally, a link suspension for supporting the arm to permit it to be moved longitudinally, a motor on the arm, for driving the projector, and means mounted on the arm and driven hysaid motor, for feeding sand to the projector. l

18. In a molding machine, the combination of an arm, a sand projector mounted on said arm, a pivotal connection for' the arm to permit it to swing horizontally, means to sus-y pend the arm so it can be rocked laterally, a suspension for supporting the arm to permit it to be moved longitudinally, a motor on the arm, for driving the projector, and means'mounted on 'the arm and driven by 'said motor, for feeding sand to the projecf tor.

19. In a molding machine, the combination of an arm, a sand projector mounted on said arm, ai pivotal connection for the arm to permit it to swing horizontally, means to suspend the arm so it can be rocked laterally, a suspension for supporting the arm to permit it to be moved longitudinally comprising substantially parallel links, a motor on the arm, for driving the projector, and means mounted on 'the arm and driven by said motor, for feeding sand to the projector.

E50. In ,a molding machine, the combina tion of an arm, a sand projector mounted on said arm, a pivotal connection for the arm to permit it to swing horizontally, means to sus pend the arm so it can be rocked laterally, a link suspension for supporting the arm to permit it to be moved longitudinally comprising vertically extending links, a motor Von the arm, for driving' the projector, and

means mounted on the arm and driven by said motor, ior feeding sand to the projector.

21. In a molding machine, the combination of an arm, a sand projector mounted on said arm, a pivotal connection for the arm Ato'permit it to swing horizontally. means to suspend the arm so it can be rocked laterally, a link suspension t'or supporting the arm to permit it to be moved longitudinally, a motor on the arm, for driving the projector, and means mounted on the arm and driven by said motor, for feeding sand to the projector, comprising Vvertical links pivoted to swing across their vertical centersv so the arm will return by gravity to its normal position.

22.'In a molding machine, the combination of a fixed column, an arm pivotod on and to swinguaround said oolumn, a sand projecv tor mounted on the distal end of said arm` a motor on the arm, for driving the projector, means to feed sand to the projector, and a flask-carrying turn-table mounted to rotate around said column on an axis substantially coincident With the axis around which the arm swings.

:if 23. In4 a molding machine, the combinato permit it to'swing horizontallyeans to tion-off aiixed column, an arm pivoted on and to swing around saidy column, a projector mounted on thedistal end of said arm, means to permit longitudinal movement of the arm,a motor on the arm, for driving the projector, means to leed sand to the projector mounted on the arm, and a flask-carrying turn-table mounted to rotate around said column on an axis substantially coincident With the axis around which the arm swings.

24.-. In a molding machine, the combination of a ii 'ed column, an arm pivoted on and to around said column, a projector mounted on the distal end of said. arm, a lllink-suspension for said arm to permit it to be shifted longitudinally, a motor on the arm for driving the projector, means to feed sand to the projector, and a iiask.- carrying turn-table mounted to rotate around said column on an axis substantially coincident with the axis around which the arm swings.

25. In a molding machine, the combination of a fixed column, an arm pivoted on and to swing around said column, a sandprojector mounted on the'` distal end of said arm, :means to permit the arm to be shifted longitudinally and rocked laterally, a motor on the arm for drivingthe projector, means projector mounted on the distal end of Said :ii-1n, afrrnotor'on the arm for driving the projector, means to teed eend to the projector, a fiasl -oarrying turn-table rotatable around the columnon un axis substantially Jo'ivnfcidf'nt with the axis around which the urn; swings, and mechanism for driving the turn-table.

- 2i'.` In :1, rnolding machine, the combination of a fixed column. on arm pivoted on und to swing-around said column, a sandprojertor mounted on the distal end of said arm. means to permit longitudinal movement of the arm, n motor on the arm for driving the projector', menue to l'ecd sand to the projector. o finali-carrying turn-table rotatable around the column' on on axis Substantially coincident witlrthe axis around which the arm swings, and mechanism for driving the turn-table.

28. ln a molding machine, the combina tion of a fixed column, :in arm pivoted on and to swing around seid column, e sundprojector mounted on the distal end of said arm, o link-suspension lor the arm, u motor on the arm for driving the projector, means to feed sand to the projector, a insloearryingttii'ntehle rotatable around the column, on` an axis substantially coincident with the axis around which the arm swings, und mechanism for driving the turn-table.

29. En a molding machine, the combination or' a xedcolumn, an arm pivoted on and to swing around said column, srsndprojector mounted on the distal end of said arm, ineansto permit 'the ann to be moved longitudinally und rocked laterally, ,motor on the arm for driving;n the projector, means to 'feed sand to the projector, u flask-cmry-` ing turntable rotatable around the column on an axis substantially coincident with Vthe axisf around which the arm swings, and mechanism lor driving the turn-table.

p30. ln a moldingr machine. the combina-` tion ot n sund-projector, u horizontally Swinging arm, to the free end of which the projector is secured, means for feeding sand to the projector, n connection for pivotally supporting the urn'i to permit the projector'.

supporting the firm to permit the projector' to he shifted to incline the angle of delivery when desired, and a studand-groove to A`guide the arm.

Signed at Chicago, Illinois, this 17th day of April, 1923.

ELMER O. BEARDSLEY. WALTER F. PIPER.

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