US1227764A - Mold-dumping machine. - Google Patents

Description

Patented May 29, 1917.

4 SHEETSSHEET I- A. 0. DUPUY.

MOLD DUMPING MACHINE.

APPLICATiON r1150 MAR. 2a, 191:.

WITNESSES amt/WM a Z INVENTOR. BY &4 0 ay, a 72 A. O. DUPUY. MOLD DUMPING MACHI'NE.

APPLICATION FILED MAR. 23. I915.

Pfitgnted Ma 2 9, 1917.

4 SHEETS-SHEET 2.

INVENToR.

" WITNESSES v WWW A. 0. DUPUY.

MOLD DUMPING MACHINE.

APPLICATION FILED MAR. 23. l9l5.

Patented May 29, 1917.

.4 SHEETS-SHEET 3.

fie. 8.

1N ENTOR.

I WITNESSES: @WQ/Gflp/A/ A. 0. DUPUY.

MOLD DUMPING MACHINE.

VAPPLICA'HDN FILED MAR. 23. [915.

1,227,764, Patented May 29, 1917.

4 S HEETSSHEET 4- WITNESSES UNITED STAEEMS PATENT OFFICE.

Aswan o. burn, or cnnvnmn'n, omo, Asemnpn 'ro T m 0. o. n rnm'r snow 00mm, or cmvnmnn, 01110, A coaroumon or 01110.

To all whom it may concern:

Be it known that I ARTHUR O. DUrpY, a citizen of the United States, and a: resident of Cleveland, county of Cuyahoga, and State of; Ohio, have invented anew and useful Improvement in- Mqld'eDn nping- Machines, of which th fol 1owingis a specification; the principle of the inventiq b ip herein explained and-thebest mode inwhic I have contemplated eppiy-ing-t'hat principle, so esto distinguish it; item other inventions.

The present improvements rel'ate in @22- eral to a machine for'ha'ndli'ng molds a r removal from a brick press, and more particularly to 'a machine of this character which will be lighter and less complicated than the 0111 I ones which have been pi'oduced up t'othis t me. It-is an extremely diificult matter to censtruct e machineofethis'characteriwh ich wilhnot be hifg'hi' compli fited nd pe s e-Q QHnWt-t... 6 lar e, u ber :of epeiationewhich must be perfprmed infireceiv ing the filled meld from the 'press; Pla ing; e Pel e e heeme i ti i ing theilattei on their pellet, aniretnrning the p y enli t e esee ei 'i m which tiii-n to the brick press d er pfi' hee o h n mr mb dy ng th o f eed meme) c'" "stitut Of Vitiiiusi i 7 "i em lilbs dle ex di d mesz+- a Figiire'kl is 'a Side e'ieiatl'on of the machine; Fig. 2. is' a, plan vie but showing elevation on the line c on! part of the'mechanism1; Fi g. 3.i's"e;-sec-, on p1an' -teken en the the1ine'AAin Fig. 1; k 4 iseeectionel a in F g- 2", t figure showingmereiy the shaftjng andjsome Specification of Letters Patent.

e .mechine' ail of theloperagearsii' are contlmi 11513 (iriYe'n' er will th ereforeibea or every complete rem-,-

.Eien ind cat d by Patente May 29, 191.7;

Application filed 1mm 2:, 1915. Serial Io. mm.

f the connections between the same; Fig, 5 1s a plan 'view of the inverter mechanism or spider; 6 is'a/sectiqn on the line C-C in Fig. 1, t e frame bein omitted; Fig. '7 is a plan'view of; a modifie type of inverting mechanism; 8 isa longitudinal view artial'l-y i sect on, the plane :of the section ,eingi indicated by the line D--D in Fi 7; Fig.9 is an elevation of the otherside 0% the machine from that-shown in FigQi; and Fig. 10Jis an end elevation of the hoisting The machine comprises a suitable frame built up of suitabl members 1, in which there is rotatably mountedupon a horizontal axis a; main driving shaft.2. The molds when brcu'ght from the "press, enter the ma.- chine upon a conveyer consisting of spaced rolls '5jii10untedhtf the right; end of; the ma: chineie's, shown in Figs. 1" and 3. The rollers he I hiPf Y d ven-5 b ta're fr to tate, anii the m ld-"box r mole 0 s. p th de red posi i '1 P he 01 5 by s me i f a-flmge-lanttaehd to theireme; Eh-e 'e'l'd isthetr pes'ieened transversely of the mnel iine will coiiprate with the tone 5 but Where hownf r '1 mech nism mp se a receptacle- 21, adepted t0 re .di-nellyl'therein a singlv 1d. 16 6i 5 Tidb is id ut a horizontal axis, "bin t l bee i i gs h'ch nie n me I,- TI-iespider carriesegear a 'geai fi on the maindriy-i'ng 4 Q theee'twe gears the gear 3' i e gear-"having teeth exten'din but around. its'periphery, and a ing p d i oth e m r t urfece to contact one, oi-the twdismwthortiuns' 9Q n w e 4. hefw; 911m he maths,

m iqn. Tw n thonehei' i'revolutien t r H liltion 0f the jaftfj2gzwith; aetii811fn -interva.l fil iw n he h i: xt v flti ns t m t of he introdi ctien end removal 0 ft e meld held therein- The sm oth po t s o he g a '8 and 4 snugly cbntaet each? other, while "the reeeptmleei is at rest, and prevent the same v which-inl'pricrmaehi h ed to contact andbuni the ends of the'moldsf 6 held in the: ec ptae. e. j Above thegshafitk 2 "out "o i thle re ented the. arm-6 to lab on upper ends of? t mold,*but'wi1l-nc .en are pivoted: tgswingbeneatht e 111 1d shoulder Biloothe hammer, th. v I 93. %9'fith jarms fi3-"into'the posit 11st 0 from movement, but in order to make sure that there is no oscillation 'or movement in any way by the receptacle at this time, locking means are prov ded. Various types of mechanism for thispurfiose ma b'e-'used-,

the preferred one here ustrat comprising a disk 69, attached to the receptacle 0011-2" the disk effective y prevents the slightest.

movement by the receptacle. I The arm 74fis' connected to a second crank'orarm 79 havinga sliding connection .with thefblock 78- a which is attached by the'pin 77 to a gear 76 attached to the main driving shaft 2L. This mechanism is so timed that the arln-74'will be lifted out of. engagement with the. some 71 in the disk 69, just prior to" the initial movement of the receptaeleQ The i arm 72 will,'of courseyrideover the "surface of the disk 'and will again latch the receptacle. is brought to rest bell. of the two notches ing mechanismfwhich wil "ante securely engage the receptacle a the latter --is "restrained a The rece m n- 21 is provi-d with longitudinally" disposed jpl-ungere "hich are normally,- n'a1ntained' "in theposlt on illustrated in Fig. 6, by. means. ,oj' springs tit). These plunerselx'tend in lie chainber 'rt d pid which poi -fi e) are provided with bumpingheads :58 adaptand the re'ee'p'ta'lnfil there isiatjdnstantl cams 61.5? Pivotallyinounted;-"-adjacentI.

cam upon -rotationof the shaft 60. The 110-. tation of, -shaft therefore ceusesjt gage meiit f" thegcam 61 and-thief they are- Spaced: thinners 57. A

et-spee nee-"em; passes the-=:-sh j theweight of-the hammer' -8 O will a" same to fall; "striking a sharp bl'o ends of'tlieplungers 57 ma .driv latter s a p y. w v hend mold, thus efieetively loosening- -the.;.hrmks therein from fill? O mpa-rtmen-ts or; the ,mold; This bumping ep'eraticn is'itimed to take ends of thelhamme'rs.

'- teed hy n -era Lee place immediately following the positionmg of the filled mold boxwithinthe receptacle, and before the same has been inverted. The bumpin .takes place during .,a necessary stop in t e progress of the -ently described, so that the bflows' received 1n; thebumpinga.e re the exact points desired; 'It" will Q 'S Od that in ordinar on tmu practically imposible toobtain sim titneous strikingby'the two hammers, since veiy slight inaccuraci'es in the positioning of the cam fivvhich lwlays. occur are 'greatl I p p is for this reason that no particular efiortis' made to time the 'ca'msto' operate successively, since there .is always a suificient time interval, even though slight, between fthe"0perati0l1 of the .two' *hamme'rs.

The mold m0ved into the "receptacle 1 multiplied at "the I from 'ofi'fthe-rollsl '5 by means of 'a' pusher.

7?. 19'- letter- .fi 'i ma y ma tamed inthe position shown in'Fi'g. 4', with their mold contactingo e'nds heldfin posit-ion to engageia mold by the weight of the other ort'lon'. In. this position the: members. 19. g ave 'ust. beenoperated "force the" mold e; *Upon thereturnof box, "ec'p'allet placing for feeding E further descri 4 eat 01 "is beingeftnteyed into y is one side. of-th'e' 'allet extending over that rs n proYidedj-with n01d engagi'ngplnng 1 eontact the" t e th.

wi l be. P--

" rec ptacle, the operation being comprising pivotedarms; 6 which aiefd'r ivn'i: f from -the-mainsIiaft-Q by means audit? th 5115 'bd oction-of themolds nto th p a le intlle i ltee 1 6 e ofitheopenrrn I a mechanismcomprisifiifiplvotedarmslti 0 'ert nk everii l lief-.129

side:0.f the mold x which is adjacent to the receptacle. As the mold and pallet are moved into the receptacle, the pallet first contacts the pivoted arms 54 and is thereby brought into alinement with the inner side of themold when the latter is positioned centrally in the receptacle. In this way it is possible to avoid the difiiculty which has been-so often experienced in similar machines caused by improper placing of the pallets upon the molds.

It is very desirable inall such machines to properly position the mold in the 'receptacle in order to prevent movement during inverting, and this is particularly necessary in the present device, since the spider is built to receive a single mold and to invert the same about its own axis. As the mold is forced into thereceptacle by the pusher, it engages pivoted arms 54, mounted one'at either end of the receptacle, and forces these arms through the open space .within the receptacle until they contact thestop pins 56 mounted upon the other sideof the receptacle. These stops are so placed that when contacted by the, armsb, the latter hold the mold centrally in the receptacle, and in such position that the longitudinal central line 1 passing through the center of gravity of the mold is in; line with the axis of the receptacle, thus requiring a minimumamount of power to invert theyreceptacle and mold, since both are being turned on their ownaxes. During the inversion of: the moldthe arms 54hold and will force the latter against the. mold that is in the reeeptacle, thus removing the a same andsliding the mold box out onto: a

suitablemonveyer which will presently be described. In order to secure removal of v a the mold from the inverter under all conditions, even when no succeeding mold is brought up to actuate the arms 54: to remove the mold'in the inverter. thegplungers 19' l are provided for contactingthe mold and forcing the same out of the receptacle 21 as already described. It will be noted that there are but one pair of the arms .54..although in Fig. 51 have shown the same in their two limiting positions. The mold is held quitesnugly'inthe receptacle by means of guides 91 upon the upper and lower surfaces of-the chamber. and isthusprevented from movement while in the receptacle, which would tend to injure the forme bricks and possibly crack them. In Figs. 6 and there is shown a modified type of inverting mechanism in which I use the same laterally open receptacle, the modification being in the use of stops 65, to limit the position of the mold. These stops 65 are slidably mounted in transversely extending ways or guides 66, formed at either end of the receptacle, and serve the same purpose in a slightly difi'er'e'nt manner, as the arms 54: and stops 56 in my preferred receptacle. In Fig. 6 there is shown at the top of the figure and at the right, and in dotted outline, a. second stop 65 which is merely the other limiting position of this stop. q 1' By placingthe pallets slightly ahead of the molds, that is with one side overlapping the forward side of the mold, the pallets are brought first into contact with the arms 54 and are, thus straightened and alined with the 'molds, so that when inverted the bricks will lieproperly on the pallet.

.Mounted parallel to the main driving shaft 2, is a second driving shaft 24, driven from the shaft 2 through gears 22 and 23 mounted respectively on the two shafts. The shaft 24 carries ateither end alargo cylindrical cam 25, the two=cams being provided at corresponding points with shoulders. 83 adapted to engage the side of. the pallet when the latter has been moved from" 95 thereceptacle onto the cylindricallsurface of the cams. The rotation of these cams therefore causes the removal of the pallets onto a gravity conveyer 26. This'conveyer 26 will lead to the drying rooms, or rather to'the conveyer which is usedto carry the palletsand the bricks to the rooms where they are to bedried, and it is thus necessary to remove the moldbox from the bricks and pallet before the latter reach the con-. veyer 26. I i v i a The mold hoisting mechanism comprises two spaced pivoted arms 36 to which are pivotallyattached other arms 37 provided with inwardly extending fingers 93 adapted to be passed beneath the handles of i the mold. These arms 37 are normally maintained inalinement with the members 36 by means of spring members 94 operating as illustrated i Fig. 10.

Extending outwardly from each of the twoarnis 375s a short rod 95 provided on its outer end with a roller 96. As the hoist is raised these rollers contact oblique faces 97, on flanges 98 on pivoted guides 99 mounted one on each side of the hoist and force the guides away from each other and out" ofihe path of .movement of the members 96. After the mold has been removed fromjthehoist and the'latter is dropped; the rollers '96 engage on the other sides of the fianges98 and thus thearms 37 are moved outwardly, enabling them to swing past the ends of the mold which has-been passed between the members i of the hoist. the rollers have passed'lso below the flanges 98, ,the springs 94 cause them to snap back'and engage beneath the handles of the mold as illustrated in Fig. 10. The operation of the hoist is secured through the arms 33 pivoted at 34 and connected to the arms 36 by studs 35. The arms 33 are alternately raised and lowered by reason of their attachment to a link. 32- attached to one end of a crank 31 on a shaft 30, this crank being operated by the rod 28 connected to the crank 27 on the driving shaft 24.

After the mold has been raised in this hoist, it is brought into the position indicated in dotted lines in Fig. 1, when it will be engaged by a cam 43 mounted on a transverse shaft 30, and by a cam 40 attached to 50, being parallel thereto, to retard and conconveyer 44 with respect to t an arm 38 which is attached to the shaft 30, and is driven thereby. There are two of the cams 43 attached to the shaft 30, and similarly two arms 38 which are connected by means of a shaft or rod 39 upon which the cams 40 are rotatably mounted, but are held from rotation by means of connecting springs 42 which permit a slight give on the part of the cams 40, when first engaging the mold, thus absorbing the shock of this engagement. The cams 40 and 43 thus engage the mold when it has been lifted to the top of the hoist, and swing over the mold, dropping it from between the two cams when the arms 38 pass the vertical. The molds, when thus dropped, fall upon a conveyer 44 operated by sprockets 45 on the shaft 30, and over other sprockets mounted on the shaft 34. This return conveyer is directly above and in the same plane as the inverting mechanism, the hoist, pallet placing mechanism and the conveyer for removing the pallets with the bricks. The path of the mold after entering the machine is thus a roughly circular one, all parts of which lie in the sameplane, thus permitting the machine to be made in a very compact manner, and securing great simplicity of driving connections between the various operating shafts. The conveyer 44 passes over the sprockets on the shaft 34, and down to other sprockets mount- I ed upon a lower shaft 48, from which this conveyer will pass back over other sprockets 46 and 47 and the sprockets on the shaft 30.

' At the discharge .end of the machine there is mountedan inclinedgilideway 50 with which the conveyer 44 cotiperatesin the followingmanner: The mold boxes are brought by the conveyer against the upper curved end of the guideway 50, the molds when brought into this positionnaturally sliding or falling down this guideway onto the con veyer 51, mounted beneath the same. The conveyer 44 cooperates with the guideway trol thedescent of these mold boxes, which may be accomplished by so positioning the i e guideway 50 than any machine heretofore made, and se- 7 cures this increased capacity with a cheaper and less complicated construction than formerly. The simplicity in turn lessens the power required to drive, and makes this present machine a very practical one for the purpose. l

Other modes of applying the principle of my invention may be employed instead of the one explained, change being made as regards the mechanism herein disclosed, provided the means stated by any of the following claims or the equivalent of such stated means be emplo ed.

I therefore particular y point out and distinctly claim as my invention 1. In a mold dumping machine the combination of a mold inverting mechanism, and means adapted to bump a mold when held therein. 7

2. In a mold dumping machine the combination of intermittently operated mold inverting mechanism; and bumping means adapted to bump a mold when held therein, said bumping means being timed to operate when said inverting mechanism is at rest.

3. In a mold dumping machine the combination of a mold inverting mechanism; and means adapted to bump a mold longitudinally when held therein.

4. In a. mold dumping machine the combination of a mold invertmg mechanism; and bumping means adapted to bump a' mold therein at either end.

5. Ina mold dumping machine the combination of a laterally open, rotatable receptacle adapted to receive and invert a mold; and bumping means adapted to bump such mold at "either end.

6. In a mold dumping machine the combination of a'rotatable receptacle adapted to receive a mold longitudinally therein; and bumping means adapted to bump such mold at either end. I

7. In a mold dumping machine the combination of a rotatab e receptacle adapted to receive a mold longitudinally therein; plungel's in said rece tacle; and means adapted to actuate said p ungers against the ends of such mold.

8. In a mold dumping machine the combination of a rotatable receptacle adapted to receive a mold; a movable member mounted at either end of said receptacle; and pivoted hammers adapted, when actuated, to force said members against the ends of said mold.

9. In a mold dumping machine the combination of a rotatable receptacle adapted to receive a mold; a movable member mounted at either end of said receptacle; a pivoted hammer mounted adjacent to each of said members, and cam mechanism adapted to actuate said hammers against said members, thereb forcing the latter against the ends of sai mold. a

10. In a mold dum ing machine, the combination of a rotatable receptacle adapted to receive a mold; a plunger at each end of said receptacle; means normally maintaining said plungers out of contact with the ends of said mold and pivoted hammers adapted, when actuated, to force said plungers a ainst the ends of the mold.

11. n a mold dumping machine, the combination of a rotatablereceptacle adapted to receive a mold; a plunger at each end of said receptacle; resilient means normally maintaining said plungers out of contact with the ends of said mold; and pivoted hammers adapted, when actuated, to force said plungers against the ends of the mold.

12. In a mold dumping machine the combination of an intermittently operated rotatable receptacle adapted when at rest to receive a mold therein; and bumping means adapted to bump such mold and timed to operate when said receptacle is at rest.

13. In a mold dumping machine the combination of a rotatable receptacle adapted to receive a mold longitudinally therein; guides adapted to fix the position of such mold when moved into said receptacle; and means adapted to bump either end. of said mold centrally thereof.

14. In a mold dumping machine the combination of a rotatable receptacle adapted to receive a mold longitudinally therein; guides adapted to fix the position of such mold when moved into said receptacle; plungers reciprocably mounted in said receptacle in longitudinal alinement with the center of such mold; and means adapted to actuate said plungers forcibly against such mold.

15. In a mold dumping machine, the combination of a pivotally mounted receptacle having a single laterally open compartment adapted to receive a moldce'ntrally therein; and means adapted to rotate said receptacle.

16. In a mold dumping machine the combination of a laterally open receptacle ada ted to receive a single mold lon 'tudinal therein; a sto adapted to posltion suc mold centrally in said receptacle; and means adapted to rotate said receptacle about a horizontal axis.

17. In a mold dumping machine the combination of a laterall open receptacle adapted to receivea sing e mold, said receptacle bein ivoted about a 'longitudinall dispose orizontal axis; and a stop a apted to position such mold centrally in said receptacle.

18. In a mold dumping machine the combination of a laterally open receptacle adapted to receive a single mold, said receptacle being pivoted about a longitudinally disposed, horizontal axis; pivoted arms mounted in said receptacle in the path of movement of an incoming mold; and stops adapted to limit the movement of said arms in a way to positionsuch mold centrally in said receptacle.

19. In a mold dumping machine the combination of a laterally open receptacle adapted to receive a single mold, said receptacle posed horizontal axis; and means adapted to stop an incoming mold in such a position that the axis of saidreceptacle passes longitudinally through the center of gravity of suchmold.

20. In a mold dumping machine the combination of a pivotally mounted, intermittently rotated receptacle having a mold receiving chamber therein open at either side; means adapted to move a mold into such chamber from one side while said receptacle is at rest; and means adapted to engage such mold and retain the. same in said receptacle 22. In a mold dumping machine'the com-- bination of a pivotally mounted, intermittently rotated receptacle having a mold receiving chamber therein open at either side; means adapted to move a mold into such chamber from one side while said'receptacle is at rest; and means adapted to positively being pivoted about a longitudinally dislock said receptacle against oscillation when at rest.

23. In a mold dum ingmachine the combination of a pivotal mounted intermittently rotated receptacle having a mold receiving chamber therein open at either side; means adapted to move a mold into such chamber from one side While said rece tacle is at rest; and pivoted locking arms a apted to engage said receptacle and prevent oscillation of the same when at rest.

24. In a mold dum ing machine the combination of a pivota I mounted intermittently rotated receptacle having a mold receiving chamber therein open at either side; means adapted to move a mold into such chamber from one side while said receptacle is at rest; a disk attached to said receptacle and provided with notches therein; and pivoted locking arms adapted to enga e in such notches and prevent oscillation 0 said receptacle when at rest.

25. In a mold dum ing machine the combination of a pivot ly mounted receptacleadapted to receive a mold therein; driving means for intermittently rotating said receptacle; locking means adapted to prevent oscillation of said receptacle when at rest; and connections between said driving means and said locking means for rendering the latter inoperative upon rotatable movement of said receptacle.

26. In a mold dum ing machine the combination of a pivota ly mounted receptacle adapted to receive a mold therein; driving means for intermittently rotating said receptacle; a disk concentrically attached to said receptacle and provided with notches; pivoted arms adapted to engage in said notches and prevent movement of said receptacle; and connections between said driving means and said arms adapted to disengage the latter from said disk to permit rotation of said receptacle.

27. In a mold dumping'machine the com- I bination of a pivotally mounted receptacle adapted to receive a mold therein; driving means for intermittently rotating said receptacle; a disk concentrically attached to said receptacle and provided with notches; pivoted arms adapted to engage in said notches and prevent movement of said receptacle; and lost motion connections between said driving means and said arms adapted to disengage the latter from said disk to permit rotation of said receptacle.

28. In a mold dumping machine, the combination of mold inverting mechanism; bumping means adapted to bump the molds when in said inverting mechanism; 'h'oisting mechanism for raising the mold after inverting; and a conveyer adapted to carry said moldover said inverting mechanism and in the same vertical plane therewith.

29. In a mold dumping machine, the combination of mold inverting mechanism; a conveyer for feeding filled molds to one side of said mechanism; hoisting-mechanism adapted to lift the mold from ofi the bricks therein after inverting; and a second conveyer mounted above said inverting mechanism and adapted to return such lifted molds through the machine in the same vertical plane as said inverting and hoisting mechanism.

30. In a mold dumping machine, the combination of mold inverting mechanism; disposed centrally in said machine; a conveyer mounted at one end of said machine for feeding filled molds to said mechanism; a hoist for lifting the molds from off the bricks after inverting; a return conveyer mounted above said inverting mechanism and in the same vertical plane therewith, said return conveyer being adapted to transport such hoisted moldsto one end of said machine.

31. In a mold dumping machine, the combination of mold inverting mechanism dissaid receptacle; and mold pus arms and adapted to enga posed centrally in said machine; a conveyer mounted at one end of said machine for feeding filled molds to said mechanism; and provided with a vertical chute having its upper end terminating above the level oi said inverting mechanlsm; a hoist for l1 fting the molds from ofi the bricks after inverting to the same level as the top of such chute; and a return conveyer for transporting such hoisted molds to the same end of said machine as said conveyer.

32. In a mold dumping machine, the combination of mold inverting mechanism disposed centrally in said machine; a conveyer mounted at one end' of said machine for feeding filled molds to said mechanism; a return conveyer mounted vertically above said inverting mechanism and leading to said sander; and a hoist adapted to lift the inverted molds from off the bricks after inverting and place the same on said return conveyer, the mechanisms being so placed that the path of the molds is in a vertical to receive a mold therein; a swinging arm,

alined with ers attached to said arm and adapted to actuate a mold into said receptacle upon the swinging of said arm.

35. In a mold dumping machine, the combination, of a rotatable receptacle adapted to receive a mold therein; a mold conveyer passing adjacent to said receptacle; a swinging arm mounted beneath said conveyer; and mold pushers attached to said arm and adapted to actuate a mold on said conveyer into said receptacle.

36. In a mold dumping machine, the combination of a rotatable receptacle adapted having its free end substantiallg to receive a mold therein; a mold conveyerv passing adjacent to said receptacle and being provided with spaced rollers opposite the same; and means between such spaced rollers and adapted to engage a mold thereon and move the same into said receptacle.

37. In a mold dumping machine, the com bination of a rotatable receptacle adapted to receive a mold therein; a mold conveyer passing adjacent to said receptacle and bemg provided with spaced rollers opposite the same; arms reciprocably mounted between said rollers in line with said rece tacle; and pivoted pushers attached to said a mold only upon movement toward sai receptacle.

38. In a mold dumping machine, the combination of a rotatable receptacle adapted to receive a mold therein; a mold conveyer passing adjacent to said receptacle and being provided with spaced rollers opposite the same; arms reciprocably mounted between said rollers in line with said receptacle; mold engaging pushers pivotally attached to said arms and adapted to normally be held by gravity in their mold engaging position but being also adapted to swing beneath a mold upon movement of said arms away from said receptacle.

39. In a mold dumping machine, the combination of a hoist for lifting molds; a conveyer passing adjacent to and substantially on a level with the top of said hoist; and means for transferring a mold from San].

hoist to said conveyer and simultaneously inverting the same.

40. In a mold (lumping machine, the combination of a hoist for lifting molds; a conveyer passin" adjacent to and substantially on a level with the top of said hoist; and means for transferring a mold from said hoist to said conveyer and simultaneously inverting the same, said means comprising a swinging arm adapted to engage the outer side of the mold, and cooperative means adapted to simultaneously engage the inner' side of the mold and invert the same.

41. In a mold dumping machine, the combination of a hoist for lifting molds; a conveyer passing adjacent to and substantially on alevel with the top of said hoist; and means for transferring a mold from said hoist to said conveyer and simultaneously inverting the same, said means including a rotatable cam adaptedv to engage beneath the inner side of the mold and an arm pivoted about the axis of said cam and adapted to simultaneously engage the outer side of said mold.

42. In a mold dumping machine, the combination of a conveyer bearing empty molds,

a chute positioned to receive such molds from said conveyer; and retarding means dontrolling the speed of descent of such v molds through such chute.

43. In a mold dumping machine, the combination of a conveyer bearing empty molds, a chute positioned to receive such molds from said conveyer; and friction retarding means controlling the speed of descent of such molds through such chute.

44. In a mold dumping machine, the combination of a conveyer bearing empty molds, an inclined such molds rom said conveyer; and a belt moving parallel to said guideway and cooperating therewith to frictionally contact, and retard the descent of, such molds.

45. In a mold dumping machine, the combination of an inclined guideway, anda conveyer bearing empty molds to the top there; of, "said conveyer also extending parallel to said guideway and-cooperating therewith to retard the descent of such molds.

46. In a mold dumping machine, the combination of a rotatable receptacle adapted h to receive a mold; and means adapted to hold such mold therein during partial. rotation of said receptacle.

47. Ina mold dumping machine, the combination of a, receptacle rotatably mounted about a horizontal axis adapted to receive a mold therein; and stop means adapted to position such mold centrally in said receptacle to balance the same.

48. In a mold dumping ma e, the 8 i D. T. Dsvms, H. B. FAY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

- wasliingtonfllc. l v

uideway positioned to receive, i

Images