US1059448A - Molding-machine. - Google Patents

Description

F. 0. FARWELL. MOLDING MACHINE. APPLIOATXON P'ILED NOV. 4, 1910.

11 ,059,448; Pa ented Apr-22, 1913.

5 BBEETPBHEET 1.

FUU. FARWBLL. MOLDING MACHINE.

APPLICATION FILED NOV. 4, 1910.

v Patented Apr. 22, 1913.

5 SHEETS-SHEET 2.

nil: II P l v fvllllliL 1 Lwl F. O. FARWELL.

MOLDING MACHINE.

APPLTCATION FILED NOV. 4, 1910. 1,059,44 Patented Apr. 22, 1913.

6 SHEETS-SHEET 3.

F. 0. FARWELL. MOLDING MACHINE. urmomion FILED NOV. 4, 1910.

Patented Apr. 22, 1913.

5 SHEETS-SHEET 4.

fiiziwsses.

F. 0. PARWELL.

--MOLDING MACHINE.

APPLIGATION FILED NOV. 4, 1910.

[$59,448, Patented Apr. 22, 1913.

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monnmcamacmn'n.

Specification of Letters Patent.

Patented Apr. 22, 1913.

Application filed November 4, 1910. Serial No. 590,864.

To all whom it may concern:

Be it known that I, FAY O.- FARWELL, a citizen of the United States, residing at Dubuque, county of Dubuque, State of Iowa, have invented certain new and useful Improvements in Molding-Machines; and I do hereby declare the following to be a full, clear and exact description of the invention, such as will enable others skilled in the art to which it appert-ains to make and use the same.

This invention relates to molding machines, and particularly to rock-over machines for making sand molds.

The inventionaims to furnish a machine wherein the jolting or jarring of thefiask for packing the sand, the rocking over of the flask to inverted or strippinglposition, and finally the stripping of the mold, are all effected by a single mechanical means. It is also proposed to effect all of these results by the use of fluid pressure, such as compressed air, and in particular by a single pneumatic cylinder and piston so connected with a mold or flask carrier as to jolt or jar' the same, rock it over into coiiperation with tho flask-supporting platformor frame on which strippin is accomplished, and then effect the stripping action itself, after which the carrier can be rocked or swung back by the same means to its initial position, where it is ready for the preparation of the next mold. A

I also aim to furnish a machine wherein the amplitude of the jarring motion used for packing the sand can be easily regulatcd,

and in which the rockingyovcr movement of the flask carrier is in effect a continuation of the jarring movemenhthatis, said carrier can be moved directly from its jarring position into its swinging over or rocking movement merely'by the admissionof more air intothe pneumatic cylinder. In stripping, the actuation. of the pneumatic c llnder always produces a straight lift of t c pattern from the mold, varying in amplitude in correspondence with the depth of the pattern; and onthe further admission of air, the flask carrier, on which the pattern is secured, enters its return rocking move ment preparatory to the preparation of a new mold. t

The machine also comprises improved means for receiving and sustaining the flask at the end of its movement into stripping from its carrier is sustained at the proper eleya-t on and in a level position, so that the str pping of the attern can take place easlly and without injury to the mold.

Inparticular, I aim to provide a flask platform or frame embodying. at are individually movable upsupportin supports tward toward the mold by a suitable operating element, such as a lever, which is also scope of the invention will be defined in the appended claims.

n the accompanying drawings, Figure 1 is a side elevation of a molding machine con-.

structed in accordance with the invention,

showingthe same in position for jolting the moldi Fig. 2 is a vertical longitudinalsection of the machine with the flask swung:

.80 Fig; 3 1s a view similar to over on its supporting platform preparatory to stripping. Fig. 2, ut illustratingthe strippin position, the pattern being at the upwar limit movement. 'Fig. 4 is a top w of its strippin plan view of t e machine. Fig. 5 is a top plan view of the base frame of the machine,

with its adjunctive parts, and Fig. 6 is an platform. 0 machine prefer 10 bentinto subend view of the strippin The base frame A of t ably includes a metal bar stantially. U

betweenwhich the base 11 of an upright hollow pistonB is secured, as by the crews 12. T-he divergent free ends of the frame bar 10 are equipped with heavy metal wheels or rollers 10' by which the frame is supported on the ground at that POlIIt ILDd at the opposite end of the base frame the same platform D, i

is equipped with a stripping the special construction of w ich will hereinafter appear.

The upright hollow piston B is fittedi within the block 11 in any appropriate manposition, whereby the flask when detached shape and having its side branches or legs directed inward toward each 3 other at their intermediate portions,

nor, and it is thereby supported in a.sta

tionary position, the bottoms of the base block and of the hollow piston being left.

open to accommodate an upwardly directed air pipe 13 which extends through the top of said piston and discharges into a movable cylinder slidable verticall onsaid iston. At its lowerend the cylin er 0 isv ormed with anoutstanding collar or flange-14 having an interior beveled seat 'design'ed to engage the inclined edge of a collar E slidable on the piston beneath the cylinder, as shown in Fig. 3. Said collar is provided with an outwardly projecting, split or bifurcated lug 10,15, the checks of which slide along opposite faces of an upright guide bar 16 extending alongside the cylinder and iston and secured at; its lowerend in a bi urcated'lug 17 formed onthe base block 11. In this way,

' the collar E is prevented from rotating on the stationary piston inits movement upward and downward on the latter, and the movable cylinder C is also prevented from rotationon the piston by the provision of a notch 14. in the flange 14, .which notch straddlesthe edge of the guide bar 16. The upward movement of the collar E on the piston is limited by a pin 18 which maybe set in any of a number ofholes or sockets 19 arranged in a series extending longitudinally of the guide bar. The pneumatic cylinder 0 is provided intermediate of its ends with outstanding trunnions 20 on which a flask carrying 80 frame F is mounted to swing in a vertical plane. This frame is preferably formed of an angle bar 21 bent into U shape, as shown, and having its end portions j ournaled on the trunnions 20 by means of suitable bearings 85 "22. These bearings are formed on blocks 23 secured to the ends of the bar 21 by means such as, the screws 24, and said blocks 23 pass beyond the pivots 20, 22 'to a slight extent.- At their projecting ends they are 40. pivoted by means of pivot pins 25 to double links 26, the opposite ends of which are pivote d totrunnions 27 formed on the co E at diametrically opposite points.

Referring particularly to Fig. 1, it will be seen that the flask carrying frame F'is arranged to extend horizontally and laterally from the cylinder 0, and to be supported on. the wheels 10*- of the base frame by means of lugs or brackets 28 applied to the sides of the carrier frame and depend ing therefrom. The sides of the carrier frame are also equipped at their upper surfaces with cleats 29 anda pattern-plate 30 is suitably secured to said cleats and carries uponits upper surface the pattern 31 (Fig.

2), which is fastened thereto in any convenient manner. The flask is indicated at 32, and the latter is provided with abottom board 33 which is removably secured thereon by means of clamps of any appropriate 0 aracteig: such as theswinging clamps 34 arranged at the opposite ends of the flask. The air pipe 13 which passes through'the hollow piston and supplies the cylinder with air may be extended horizontally atthe base lar .a vertical plane. Hence by depressing the .47-48' operate. The stirrups 47. -are pivoti of the piston, 1 as indicated at 35, it being.

then extended upward as shown at36- The 'pipe section 36 is in turnconnected with a.

supply branch 37 in proximity tolthe'movab e cylinder, and the air in .said branch, which is furnished from a suitable source, (not shown) is controlled by anfordinary three-way cook 38 in such a way as to either" supply air pressure to the cylinder. or to place such cylinder in'communication with anexhaust-port 39 (Fig. 4) associatedwith the controlling valve. 1,

The stripp ngv platform D, previousl i mentioned, is constructed substantially asfo lows: That part of the base frame A which is at the side of the cylinder opposite the, supporting wheels 10, is equipped with a plurality of upwardly directed'sockets 36, preferably four, as shown in Fig. 5. These sockets, which may be conveniently formed of cast metal, are bolted or screwed to the side faces of the bar 10, as indicated, and in said sockets individually movable supportingmembers or standards 37 are movable vertically. The. f

upper ends of the standards 37 are provided T with flanges 38 having upstandin .side lugs. f 39. Upon the flanges 38 of em pair of sockets rests a supporting piece or beam 40 that extends transversely of the machine and x is loosely connected to its supporting stand- 95. ards by screws 41 or similarfastenin u passing through the side lugs 39 into sai V beam." 3 The top surfaces of the flanges 38 are made slightly convex, and this in connection with the independent movement of the support ing standards, and the pivotal connection 41 of the beam ends with the standards, enables the end portions of each'beam to. be moved upward or downward independently to a certain extent, as will be manifest, These beams are connected at their intermediate portions by means of a cross'beam '42 which v is adapted to be raised by means of a lever 43 pivoted to the base Aat44 to move in" 110 outer end of the lever 43 its inner end will be raised beneath and against theicross' beam 42, whereby the platform proper,fem'bodying the supporting beams 40 will be raised as. a unit. The lever 43 is operated, by-means of an elbow or hell crank lever 45 swiveled on the lever 43 at 46 and having in addition to a vertical movement for the. purpose of elevating the aforesaid platform, a laterally swinging movement which lockswthe beams, 40 in their adjusted position, wheremthey hold the flask horizontal. In order to effect this end, each of the sockets 36isprov1ded near the upper end with a slot in its sidev wall, in wh ch locking members or strirrups ally connected at 4'9 and the stirrups 48 are similarly connected at 50, thepivots 49 and 50 being in turn connected by means of-jointed links 51-52 pivotally connected at 53. The .130

memes link 52 is made a'djusteble in length by means of e. tum buckle portions of the etirmps 'of as The entire e e tem ef "tackl ng members and connecting links is operated by means e! a link fifi cennected with the lihk 51 M58, and pivoted at the opposite end to the inner ends of the e1- bow lGVG-l' 46, as indicated at 57. The pairs of locking sti 47- 48 ire so arranged that when the stumps of e @hi! are alihed drawn toward each otherfoi'cibly and thereby f -ictionally engage the respective stand"- ards to such an extent thutthe latter will be firmly locked in gosition. In efii'ectihg this result, the links 52, which term a to 1e, are straightened by the tictuatiim 'ofthe ml:

until the pivots 49, 50 and 63 atei'n line or, in fact, the pivot '53 is just past the center line, as indicated in dotted lines in 5, thereby locking the stirmps in frictional engagement with the standards.

The operation of the machine as'a Whole is substantially as follows-z Whenthe flask carrying frameF is in the os'itien shown in Fig. l, the atte-i n is suitably fastened on the top 8111' ace of the plate et), and the flasklis then filled with'eand in the usual manner, the mend rising above the epen top of theflask. The 'meehine is then ready for joking er jarring in with to peek the sand around the pattern, and this is accomplished by quick alternate movements of the air Valve {48% These movements ca'use air to be altemtely admitted to and exhausted from the mbv'able 'cylinder (3, end as a tBult said cylinder iwlll rise quickly to the dashed extent hinder the hnpetus of the air 'ressnre, end then, ts soon he the air is turned 01!, deep back by gravity, thereby expelling the e'dmitted air-rapidly out of the exhaust peit 89 olfthe ii? valve.

During this operation the h 18 is located in the lowermost hole in t e guide her 19, so that each time a small amount of hit is admitted tb the cylinder, 'fbh'e latter will swing the carrier F upwardly to h slight extent by means of the eonnectiens 20, 22, 23, said carrier being swnn about the pivots 25 of the links '26, which" taking this movement are ra'cticall; stationary. At the end of each 'ownwar movement of the ten rier, due te the release of the air, the legs or 'braekets28 will engegeforcibly with the jclting wheels 10, with the result that the flask is thoroughly jolted or rammed in flask, and the bottom htmrd 23 right, with ref- 3 mop 'osi't'e direetich's, vim, outwei'ti and.

Meier to pahk the sand to the'iequized eartentu The fjoltihg mice is then discoin tinned, the Sand leveled off at the to need -in position and locked on the fies clamps '34 Wheh the jclting has heeh'eom pleted the flask is ready for-shaking emonto the platform I). When air is fivst udmitted to the cylinder the lattenin be ins te swing the carrier upward in the joltihg bpereticn. Upon a rther edmiesien 'of air, ho'weven, and 51 mm"- spending elevation bf the cylinder, the aim ing: 'of the trtlhni'ons 20 will elevate the pitch; 26 as well he the terrier, and them by :gmtlmjlly swing the links 26 toward the right, with reference to Fig. 1, until said pivots lire elined vertically with mid'mm hione, it which time the earner-will have MGlld eveatieal esitien. Theeatfier will then page this position, wider the impetne of the movement given it, and will ring downward town-rd "the pmimn D as fat as is cylim the links 26 movizg in "the meantime and town to the the petition 0f thefermitted 'by the mlnme' of m'r lithe er right slinwn in full lines in Figs 2.- 'tIhe mm wn'y nook "38 is then eh man la't ed be to exhaust thee'ir from the c in er may, and the letter will sink y gray ty'ti) its lowermost position, moving down mewrter ihtothe pbeitien thrown in Fig. in "it is supported horizontal] glatlon D. The 133cm is at ression 'o' e. eti

a: prevl midy describedf t is d the lever being convenient-,1

foot of the epemtbr, and

en elevated 469 when "of thereby mised into engagement with-the ,bbttmn of the flask so t at they cenform to the horizontal position taken by the latter. Wh'enthe beams 40 are with the link in this manner, it IS necessary to lock the standards e7 i n eh? e'djuded pm swinging movement 'on its pivot '46, as previbusly desi'tion, end this it"ccem Its ed by 'vmg the epcmting lever 45 a g! etemlly scribed. This o eration may likewise be effected lay the eperntmrs hands the left free for o erating the air valve and for other urpeees. When the from beneath in '8'. 'p'sltlbh, the mold is ready for stripping. The 'dlal'nps 34 are released so that the item plate 30 is freed from the body of e flask. The pin 18 is then laced at such an ehavntion as the attached nttem plate the requisite amount df straight lift, and after the usual rapping has taken place to release the pattern roperly from the mold, air is admitted to the cylinder, as before. Inasmuch as the in 18 is new at some distance above the sliding; eollar E, the latter is carried upward a ong with the cylinder until its herizcht'al ellected bythe prol'jenly engaged foot so that his to give the carrier and lug abuts said pin, said collar being raised by the cylinder through the links 26 and their connections, as will be understood. As the collar'and cylinder are therefore maintained inthe same relation to each o'ther, no swinging movement of the. carrier will take place, but on the other hand the cylinder, collar, links 26 and carrier will "be moved upwardly in a vertical line as a unit, without relative movement. As a conclear and without injury to the surfaces of the mold cavity.- The pin .18 is set at such an elevatibnthat the collar E will abut against the pin 18 only after the pattern has cleared the mold, and when this occurs the relative movement of the cylinder and position over the jolting support. In other;

carrieras previously described again takes place to rock the carrier back to its initial words, when the collar E is arrested by the pin after stripping has beenefiected, a rock-. ing movement which is the reverse of the one first described will occur in order to restore the parts to their initial position, the rocking over commencing at a higher elevation, however, in this instance, as will be understood. After stripping, the mold is removed from the stripping platform, as-

usual, and when the carrier is returned to I its initial position, as described, theme chine is ready for the preparation'of the next mold, with the same or a diiferent pattern.

Of course it will be understoodthat this construction provides for a straight lift from the jolting support,'if desired, as well as. a strai ht lift from the stripping support. During t e joltingoperation, the jolting wheels 10 must beplaced ona firm foundation, as will be. manifest. The rapping of the mold when in stripping position may be accomplished in the most advantageous way by means of a pneumatic yibrating device. Inasmuch as the air valve. may be controlledby one hand and the platform operating lever actuated by one foot while the operator occupies a position at one side of the machine, the other hand of the operator is left free for such manipulation of the other parts as is necessary.

It will be readily understood from the foregoing description that my improved machine is simple in form, reliable in operation, and that the several operations (le scribed may be carried out with great rapid- I ity and with a minimum expenditure 'of energy.

.ing platform, a single means to jo fiask, rock it over onto said platform and col Of course I have not attempted to do scribe the various modifications of the machine that may be adopted without digressing from my inventive idea, the scope of which is set forth in the claims.-

What I claim is:-

1. In-a moldin machine, a flask carrier, and a single fluld pressure cylinder and piston for jolting said carrier and then moving it to a laterally located stripping positiona 2. In a molding machine, a flask supporting platform, and a single fluid pressure means to jolt the flask, rock it. over onto said platform and then strip the mold.

3. In a molding machine, a flask suppoil'ltt t c then give thepattern a straightlift preparatory to a return rocking movement, and means for varying the amplitude of such straight lift.

4. In a molding machine, the combination of a base frame having-a jolting sup port at one side and a strippingsup-port at the opposite side, a flask carrier mounted to swing between said supports in a vertical plane, and power mechanism intermediate said supports and connected with the carrier to eifect the jolting thereof and likewise the swinging or rocking over .movement. Y

5'. In a molding machine, the combination of a base frame having ajolting support at one side and a stripping support at the opposite side, a flask carrier mounted to swing between said 'sup orts in a vertical plane, and a pneumatica 1y operated device intermediate said supports and connected with thecarrier to 'efi'ect the jolting thereofand likewise the swinging or rockingover movement.

6.: In a molding machine, the tion of a base frame having supports at opposite sides, a fixed piston rising, from the -frame between said supports, a cylinder slidable on said piston, a flask carrier pivoted to said cylinder, a collar slidab e on the piston beneath the cylinder and 1i ited in itsvertica'l movement, and links rz nnebtinp' the carrier with said collar. I Q

7 In a molding machine, the combination of 'a fixed iston, a cylinder slidable thereon, a collar s idable on said piston,- eans to limit the movement of'jthe collar. a flask carrier pivoted to the cylinder, and links pivlotally connecting said carrier and said combina- 8. In a molding machine, a base frame port, a vertically swinging flask carrier above and sustained thereby, a pneumatic cylinder and pistonfor operating the carrier, and a controlling valve for said cylinder and piston operatlve on alternate movements to raise the carrier :from the jolting support and then permit it to drop down thereon by gravity.

10. In a molding machine, the combina-- tion with a fixed piston and a cylinder el-idable thereon, of a collar also slidable on the piston, a flask carrier operatively con Looted with the cylinder and the collar,and

mans for varying the amplitude of move ment of the collar.

,11. In a molding machine, the combination of a fixed piston, a cylinder slidable means for effecting a roc ing movement of the carrier with respect to the cylinder,

comprising a member having a restricted sliding movement on the piston and connected with the carrier.

12. In a molding machine, the combination of a vertically movable element, a normally fixed element, a flask carrier pivoted to the former, connections between said carrier and the normally fixed element whereby relative movements of the elements will of; feet a pivotal movement of the carrier, means to render the relatively fixed element movable in unison with the vertically movable element to effect a vertical movement of the flask carrier, and means to actuate said vertically movable element.

In testimony whereof I atlix my signature,

'in presence of two witnesses.

I FAY O. FARWELL. Witnesses:

FRANK. B. Hum, GLENN MUFFLY.

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