US2004292A - Shake-out apparatus for foundry flasks - Google Patents

Description

June 11, 1935. w. F. PIPER 2,004,292

SHAKE-OUT APPARATUS FOR FOUNDRY FLASKS Filed Feb. 20, 1933 2 Sheets-Sheet l June 11, 1935. w. F. PIPER SHAKE-OUT APPARATUS FOR FbUNDRY FLASKS 2 Sheets-Sheet 2 Filed Feb. 20, 1933 Patented June 11, 1935 a i a QUNIT S A -E1 O CE 1, Y 4 9 g a a SHAKE-OUT APPARATUS on mime in FLASKS Walter F. Piper; Oak Park, 111., 'ass ignor to T he Beardsley & Piper Company; Chicago, Ill.,"a

corpo'rationoi Illinois v Application February 20, 1933, serialfivo; 657,511

6 Claims. (crass-72 The present invention relates generally to which like numerals of reference denote correshakeeout apparatus for foundry flasks. More sponding parts throughout the several views "particularly the invention relates-to that type of a Figure 1 is a side elevationof an apparatus flask shake-out apparatus which effects shake- I embodying theyinvention. Fig.2 is a plan. Fig.

out of the flask by vibrating the latter at com- 3 is a vertical section through one of the viparativelyhigh speed and includes as the operbrating devices; Fig. l is an end elevationof the ating part thereof, a flask vibrating device which vibrating device of Fig, -3.- Fig. 5 isa fragmenconsists of acylinder, aslidably mounted'hamtary plan view. of a modified form of a flask mer .in one end of the cylinder, and apneumat-J shake-out apparatus.

icallyoperated piston in the other endofthe The::Jshake;-out apparatus of Figures 1,v 2 .3 Q

cylinder for imparting blows in rapid succession and r4 comprises a pair of channel beams Ill to the hammer for flask vibrating purposes. 9 g which areadaptedthroughthe medium of a pair,

One object (of the inventionwis to provide an of vibrating'devices l2 to support a flask l8 and apparatus of this type in-whichthe hammer of are secured on the top of a grating ll through theivibrating device is designed to engage die which; the sand discharged from the ifla'sk is rectly and form a rest or; support forpthe flaskadapted tonfall intoa pit or-onto the floor. The i andnduring operation of the device transmits, vibratingdev'ices [2 are of like constructionvibrations directly to the flaskcwithout-jarring Theyare secured on'top 0f-and between the on transmitting shock to the cylinder of thei dechannel beams ID-and are positionedto underlie I .Another object of the invention is to provide; *Eachvvibrating device comprises: a casing 13 a flask shake-out apparatus of the type under in which: is formeda vertical cylinder ,Madaptconsideration which comprises. a: supporting;ed-ftoreceiveairsunder pressure; a piston 15 structure and a plurality of vibrating devices slidable in the cylinder 14; and a hammer. I6

' which are supported on the supporting structure provided with a stem "16* slidably fittedin the 25 in'hori'zontally spaced relation and in ,anupt-l upperJend ofrthecylinder and adapted toibe, standing position and arearranged so; that the impacted or struck bytthe' piston tl5,-.and also hammers thereof engagedifierent portions of the. provided with an enlarged'head Iii positioned flask. 1,. i i above the casing andoutside of the cylinder.

WAfurther objectof theinvention is to provide; The v casinggl3 is :provided with integral lugs 30 it 1 aflasksh'ake-out apparatus of the last men I3 for bolts ll which are adapted to secure tioned" character in which the hammers .ofthe the'casing in fixedYposition on the beams 10. lvibrating deviceshaveen1arged,;rounded heads The sides of flask l8 are adaptedto rest di-" for, tiltably sustaining or supporting theflask rectly on the topsiof the heads 16 of the ham-E 5;. and the supporting structure ,is & provided bemers I 6 of the vibrating devices. These heads tween the vibrating'devices with a bar for limitare positioned over the top Walls of the, cylinders] ingtilting of the flask andlnholding it in place I4 andu'are adapted normally to rest on said on the heads of the hammers. 1; walls. An attribute of this constructionis that A still further object of the invention is to the flask rests on and is directly supported by 0: provide a flask shake-out apparatusof the type i the hammers, so that the blows imparted to the v 40 and 'character under consideration which is gem hammers will ibe'atrahsmitted directly tothe erally of new and improved construction,consists flask and not 'torthe casings of the vibrating de of buta small number'of partsand may bemanvices. The" top. surfaces of 1 the head 16 are; ufactured at alow and reasonable cost." a convex to permit the flask tofrock duringblows 5,-. Other objects of the invention and thevarious by the harnm'ersfllAbar IS with upstandinglugs advantages andcharacteristics of the present I9 at its ends is welded to the beamsulfl and]v shake-out apparatus will be apparent from a extendstransversely ofthe beams l0 and under consideration of the followingndet'ailed descrip the flask a; :suflicientmdistance to prevent the tion.%

flask from "tilting transversely 01f the-headsfof Q; The/invention consists in the several novel the hammers. The flaskis, confined against dis-v features which are hereinafter set forthand are placement longitudinally of thebeams lll'by;vermore: particularly defined by claims at the contical guide plates 20. which are secured to the clusion hereof. i '1 v casings I 3Vby certain of the bolts ll. This ex- In thev drawings which accompany andform a emplifies an apparatus for shaking out a founpart OfxthiS specification or disclosure and in dry flask in which the flaskvrests directlyon the55 der pressure, preferably air, which is delivered I 3 through a pipe 22 which isisuitably coiiiiected;.

into an inlet-chamber 2| in the casing usually by a flexible hose, to a source of com pressed air. The piston l5 is -provided.withtwo-- circumferential grooves l5 fand l5fiwhich for in effect, three piston-sections l5,|5 "an-d I5 The upper end of the piston is adapted to imv pact against the lower end ofthestem' lB oi' the hammer It to impart blows in rapid suc-- cession to the hammer. Ports 24 extend axially through the piston-section: I 5 "and por ts 25.5:e'X tend axially through th'e pistomsection I5? Ari annular inlet' channel 21 for-med in the casing' around the cylinder I 4 isincommunication Witl'i theg inlet-chamber- 2"l Annular exhaust'mham' nels 25 and 26 are formed in the I oylinderwall and lead to an exhaust-chamber 2 h Assum-- ingthe'pistonl 5 to be'in -the position shown' in Fig. 3, air under pressure willflowfrom: channel 2 l a into the groove I 5 inthe piston and through ports 24*t0 exert a pressure' upon theipi'stonito impartan upward stroke= tothe piston and a blow .to the lower end of the hammer=stem 16 During' this stroke, thepiston sectio'n-:'15 will cut off the supply of compressed air; After the a blow has been" struck, the air? which has imparted the'upward stroke to: the": hammer wi1lescape through channel? 25 aHd gIOOVG lfi ft'o' the exha'ust chamber 21 Asr-the hammer reaches its upward limit, air will' fiowfrominlet-cham ber 21' throughfa small port 28=into groove ['5 of the piston to exert? a: downwardspressurd 011: the topiof' se'ctlon I 5F a'ndthe top? of section I 5* to which air passes via ports 23, toareturn thehammer to its loweredposition;

return stroke; :the'air from the topi of the piston: willbe' passed through ports' 2 5;; groove [5 and" This channel 25 to the exhaust 'chamber 21;: operation is repeated-- in: rapid: succession -to im part the b1ows to the hammerto vibrate the flask;

A sheath -of fieizible material; such as asbestos belting; is fitted around the periphery of the head 16 of each l'iammer' and: depends around the-outside of theuppenportion of the cylin der=, to 'prevent' sa'nd from passinginto the cyl-" 'I'liis' sheath' is secured: to-ythe head: of the hammer by a 1 binding wire 31' which ties the: sheath in an annulai g-r'oove 32-in the head of ind'er.

the hammer;

Fig. 5 shows shake-out apparatus in whichprovision is made fbr' adjust'ab'ly mounting one 'of' the: vibrating:-

de'vices so" it" c'aribe adjusted 'to andfrom" the other to adapt Y the apparatus for of difm this form ofapparatus, a

ferent' widths; link- 34 has oneof its ends pivoted to the casingo'fthe: movable; device and its'other endwtda lever 35 which is pivoted to' one of 'the channel beams HI; The trip-flanges of'the' beams I are provided with a plurality of bo'lt holes" for thebolt's I1 When-the bolts l1 are'remove'd; the movable vibrating de'Vice -can be: shifted by the lever 35 longitudinally of" thebeams to bring it intothe desired p'o'sitl'ofi according i30 During? the" slightly' difiereht form of the width of the flask and the bolts I! can then be passed through the aforesaid bolt holes to lock the vibrating device in its desired position.

The invention exemplifies a flask shake-out apparatus in which the flask rests directly on a fluid operated hammer so that the blows imparted to the hammer bythe piston w'ill be imparted directly to the flask and inthis way the flask is sharply and efiiciently vibrated to cause the material or castings therein to be dislo'dged"from: the flasks If desired, the invention may" be used with a single vibrating device or more than two.-

The invention is not to be understood as restricted to the details set forth since these may be modifiedwithin the scope of the appended claims without departing from the spirit and scope-cf the invention.

I claim:

1. 1 a a flask shake-out apparatus of the character described, the combinati'on' ofa suppo'rt'ing structure; a vibratingdevice mounted thereof T an -e rila'rg'ediroundedhead for support in'gthe fiask directly thereon and so that it is tilta ble relatively to the device; a piston in the 1ower end: of the: cylinder," and fluid r ssuremeans -for' movin thepiston up and dowmin rapid su'ccession in order to impart blows to the hammer" so: as to transmit vibrations viathe ctly"to the flask; and bar: means? n 'the supporting 'structure independently of theflv'ibr'ating device" for limitingltilti'n'gi of/the fiask and: holding it in place-on the head:

2 In aflask shake-out apparatus of. the character described, the combination of a sup porting: structure? a flask vibrating; device mounted on the structure andcomprising a cylinder with oneend thereof open and itsother end closed; a: piston slid'a'bly mounted within the closed end of 'the cylinder; fluid pressure": means-Tori reciprocating the piston in: rapid suc cession 'withinisaid closed "end of thecylinder; and: a slidably mo'unte'di hammer: in: thenopen end of the cylinder provided at the outer 'en'd': thereof with a; fully exposedrigi'dnhe'ad'ifor engaging directly a portion" of the flask;- and adapted during reciprocation of: the pistonto receive blows from the latter and to: transmit such blowsivia the head. directly to the 'flask without! imparting: shock" to 'the cylinder? and" means associated 'with the supporting structure: and independent of the hammer for holding: the: flask in a shake-out-positionwith respect 'to said head.-

Inra fiask shake -out apparatus of the char acter described," the combination of: a: sup'porting structure, aflask vibrating device mountedin an upstanding position: on" the structureand: comprising a substantially vertical cylinder with an: cpen upper end; a I piston slidably mounted the: lower end- 0f the" cylinder-fluid pressure means for" moving the piston up and down in: rapid successionin": said other end oi the cylinder, and a slidably mounted hammer in: the upper" end of thepylinder provided at the outer: end thereof with a fully. exposed; en-'-. 2 larged; rounded head for" supporting the" flaskdirectly thereon and so that it is-tiltable*re1a;- tively to the device and adapted 'during reciproca'tion of the: piston tw receive blows from the:

latter. and to transmit such blows via the head directly to the flask without imparting shock to the cylinder; and meansindependent of the hammer for limiting tilting of the flask and holding the flask in direct engagement with and.

in place on the head.

4. In a flask shake-out apparatus of the character described, the combination of a supporting structure; a pair of laterally spaced, vibrating devices mounted vertically on the supporting structure and adapted to support the flask, each of said devices comprising an upstanding cylinder with an open upper end, a hammer slidably mounted inthe upper end of the cylinder and embodying at the top thereof a rigidhead designed and fully exposed to engage directly a portion of the flask, and a pneumatically oper ated piston in the lower end of said cylinder adapted to move up and down in rapid succession and to impart blows to the hammer so as to transmit vibrations to the flask via the head;

and bar means mounted on the supporting struc ture between the two devices and entirely independent of the said devices forengaging the;

inder and embodying at the top thereof an enlarged head designed and fully exposed to engage directly one of the end portions of the.

flask, and a pneumatically operated piston in the lower end of said cylinder adapted to move up and down in rapid'succession and to impart blows to'the hammer so as to transmit vibrations to the flaskdirectly through the head; and means mounted on the supporting structure between the two vibrating devices for engaging the flaskloosely and holding itin place on the heads of said devices.

6. In a flask shake-out apparatus of the charthe side portions of the flask and supporting acter described, the combination of a supporting.

structure; a pair of laterally spaced, vibrating devices mounted vertically on. the supporting structure and adapted to support the flask, each of said devices comprising an upstanding cylinder with an open upper end, a hammer slidably mounted in the upper end of the cylinder and embodying at the top thereof an enlarged rounded head "for engaging a portion of the flask directly and supporting the latter 'so that it is tiltable relatively thereto, and a pneumatically operated piston in thelower end of said cylinder adapted to move up and down in rapid I succession and to impart blows to the hammer so as to transmit vibrations tothe flask via the head; and bar means mounted on the supporting structure between the vibrating devices for limiting tilting of the flask and holding the latter in place on the heads of said devices.

WALTER F. PIPER.

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