US1249994A - Molding-machine. - Google Patents

Description

W. #:LiNiCHOLLS.v MOLDING MACHINE. APPLICATION FILED JAN. 1. l9ll- RENEWED MAR. 14, I916.

8 SHEETS-SHEET 1.

Patented Dec. 11, 1917..

W. H. NICHOLLS. MOLDING MACHINE.

APPLICATlON FILED JAN. 1. 191:. RENEWED MAR. 14. 1916.

8 SHEETSSHEET 2.

ivilian eases (gm-00km ?%%mz zz4 14 A. Q A/L'oiwlls Patented Dem 11,1917.

W. H. NICHOLLS. MOLDING MACHINE.

APPLICATION FILED JAN. 7, I91I- RENEWED MAR. I4. 1916.

1,249,994., Patented Dec.11,1917.

a SHEETS-SHEET 3.

' 33) his 61m @1421 w. H. N ICHOLLS,

MOLDING MACHINE.

A P PL ICA'TION FILED JAN 7, I911- RENEWED MAR. I4. {916.

8 SHEETS-SHEET 4.

8 W02 wfoz W. H. NICHOLLS.

MOLDING MACHINE.

APPLICATION FILED JAN. 7, I911. RENEWED MAR. I4, 1916 :5. 4;9 99%, Patented Dec. 11, 1917..

B SHEETS-SHEET 5.

W. H.-NICHOLLS. momma MACHINE F APPLICATION FILED JAN. 7. I911. RENEWED MAR. l4, I916- 1 ,QQQ, 99% Patented Dec. 11, 1917 8 SHEET.S-SHEET 7 W. H. NICHOLLS.

MOLDING MACHINE.

APPLICATION FILED JAN. 7, NIL-RENEWED MAR. I4. 1916- 13%,994. Patented Dec. 11,1917.

-- 8 SHEETS-SHEET 8.

, 1 A witumo 1 5 vg-ue wfoz Hf I: I I H W 0 is,

winaniia n. nionoLL-s, or naoonnvn, n'nw "roan.

momma-machine.

nsaacca.

Specification of Letters Eatent.

Patented nee. ii, an.

Application filed January 7, 1911, Serial No. 601,420. Renewed ll tarch it, 1916. Serial No. $4,238.

To all whom it may concern:

. Be it known that l, vViLLiAM H. NICH- oLLs, a citizen of the United States, and a resident of Brooklyn, county of Kings, and

State of New York, have inventedcertain new and useful Improvements in ll/iolding- Machines, of which the following is a full, clear, and exact description.

This invention relates more particularly to machines in which the sand is squeezed or packed by mechanical about a able pressing devices and by suitable means pressure applied on opposite sides of the flask so as to pack the sandabout the-pattern; and to provide a pressing device which is socontrolled that air pressure may be applied and the said pressing device positively moved toward and away from the flask and held in such a way that in its positive movement from the fiask,'it is so guided that it \v'll not jar or affect either member of the flash or the supporting means therefor which would likely damage the mold as is .often the case in machines of this characten as ordinarily constructed in which the movable pressing device is positively'moved in one direction only and permitted to move in the opposite direction by gravity.

Gther objects of the invention are to provide simple and efiioient means for supporting the ilaslr. members on opposite sides 0E a parting plate and for holding the same to said plate; to provide simple means whereby the Cops member of the flask may beheld to one of the nressino devicesto provide simple means whereby a normally stationary pressing device may be swung to one side to carry one of the flask memhers'thercwith, and to provlde simple means whereby a ,piston carrying. the movable be rotated, and durin the rotation to have the packin board D]. the flask moved in. ward to in tially pack or squeeze thesand of the drag member of the flask.

further object of the invention] to provide simple means whereby. after the pattern has been removed and'in case'a core has been placed in position within the drag the said dragmaybe moved by a pressing device into position to be united to the cops member of the flask and during the upward movement of the pressing device the pressure of air may be automatically out ed at this proper point, and by manually operated .means the entire flask permitted to lower with one of the pressing devices in position to be removed from the machine.

lVith these and other objects in view, the invention will be hereinafter more particularly described with reference to the accompanying drawings, which form a part of this specification, and will then he pointed out in the claims atthe end oi thedescription. In the drawings, Figure 1 is a front ele vation of one form of machine embodying myinvention. I

Fig. 2 is a vertical section, partly in ele vation, taken on the line ll lll of Fig. 4., 'Fig. 3 is a side view. Fig. 4 is a plan view, showing the parts in position for packing or squeezing the sand. 1

Fig. 5 is a sectional View, partly in eleva-' tion, showing the means for rotatablysup porting the parting plate and its frame.

Fig. 5 is a section of one form ofiivalve' or cook that may be used inconneotion with the pneumatic pressing means.

Fig.6 is a plan view with the iippen'press 7 is sectional-plan showing-one.

means for limiting the swinging movement of the upper pressing device, and the flask support.

Fig. 8 is a plan view showing how the parting plate and the flask support-are moved to one side out of the path of the pressing devices.

Fig. 9 is a detail plan view of one of the flasks.

Fig. 10 is a transverse section of the fiask in position on the parting plate.

Fig. 1] is a transverse section showing the drag only on the pattern plate, the section being taken on the line XL-Xl of Fig. 8.

Fig. 12 is a view similar to Fig. 11 except that the pattern plate and supporting frame has been rotated one-halt' of a revolution to reverse the position of the drag member of the flask.

Fig. 13 is a {momentary plan view, partly in. section and partly in elevation showing how air under pressure is applied to the means for holding the cope of the flask to a normally stationary pressing member of the machine.

Fig. 14 is a i'ragn'ieiitary section sh ).ving how the clamping fingers for the drag are autoii'iatiraliy moved inward as the pat tern plate and its support is rotated.

Fig. 15 'a seciion't'aken on the line XV- .QV of Fig. 14;.

Fig; 16 is an end view of Fig. 13.

Fig. is t sectional view taken on the line XVLT-- lViI of Fig. 16, showing one of the pneuii'iatic devices for engaging the flask cope.

Fig. 18 shows partly in section and partly diagrammatic a transverse section of the,

flask with the pressing devices in position to pack the sand about. the pattern.

Fig. 15) is a fragmentary vertical section showing" the ilask member and parting plate after the mold has been made.

Fig. 20 is a sectional plan View showing another form of means for ciigag inp' the cope men'iber of the flask to support the same.

Fig. 21 is a front view of Fig. 20.

Fig. 22 is a sectional view, partly in elevation. showing the means 't'oiwidjusting the flask engaging devices, the section being and Fig. 23 is a sectional view showing an adjustable screw which is adapted to de- 'termine the pressure which may be exerted by the upper normally stationary pressing device upon the cope.

The l'HlClllllG has a base 10 from which projects brackets or arms 11 and 12 and on the bracket is a boss 13 in which is rigidly held a vertirally-extending rod or post 14. .This post is fixed in the boss 13. and has a collar 15at the upper portion taken on the line XXH XXH of Fig. 20;

thereof above which pivotallv held a i'i'aiiie arm 16, the said ari' 'i having: a boss 17 which is held between the collar l3 and a washer 18 by means of a nut 19 secured to the end of the post ll. The arm l is oi substantial lliik'lx'liess to withstand the pressure or strain thereon and at the end opposite the boss 17 is a rod 20. This rod 20 has a threaded end and is held to the arm 16 by means oi a nut 21 secured to said rod and a washer 2 and nut on the end of said rod. "ihc l()\\'i,i' l5ll(i of the rod 20 is provided with collars and E253 and the said collars are so spaced as to engage opposite faces of the enlarged part 26 formed on the end ot' the i'iaii'ie bracket 11. The boss 26 is slotted on one side. as at 27, so that when the frame arm it) is swung on its pivot into substantial alinciiient with the brackets 11 andv 12, the said rod will enter the recess 27 and by means of the collars 2i and be dctachably hold thereto. The arm 16 with its post 14- and brackets 11 and 12 and base 10 form a substantial frame for the parts oi the machine and permits the frame arm 16 to he moved on its pivot for purposes to he presently described.

A flask frame and soppoitingmeans 28 is pivotally held to the post or upright 14, .i ig. 8, and this 't'raine has a supporting arm 29 provided with a boss 530 which is i)i.\')lL;tll V held to the post, ll between the 'tited collars 3i and 32.

The arm 29 has a rod 33 held to the outer end thereof and on the other end of said rod oppir site the arm 29 and substantially parallel therewith is an arm 3. (1118 end of the arm 34, as 35, is secured to the rod 33, and the other end of said arm is slotted, as at 36. and is adapted to span the rod 20 when the iiask frame and supporting means is swung over the base and the brackets 11 and 12 as shown in i to i, there being two collars 3W to support and hold the arm iii. The frame .2 is located substantiallv intermediate the frame arm 16 and the frame brackets 11- and 12. and held to the rod; 33 are the arms '57 and 38. These arms are each similarly constructed and at their outer ends are bifurcated to provide overhang ng opposed lips or bosses 23S) and 4 0 (Fig. 2). A vertical rod 41 is held between the bosses 39 and it) and hcld to slide on each rod 41 is a hearing 42. parting; or pattern plate 4-3 is held to a irame it which is siihstautiali rectangular in form and on o 'iposite sides oi the plate the cope 45 and the drag); 4G oi the flask is adapted to be held, as shown best in Figs. 1 and 2. This parting plateaiid frame has a stud i-7 pro ecting'outward therefrom on opposite sides forming truimions for the partinn plate frame and said studs 4"? are jouri'ialed in the bearings so that said parting frame may be rotated.

exhausted. "E le pressure pipe 81 has separate and mdependent connection 88 with a 'iassagg e 8:) upwardly extending 'threugh the red 72 to the thereof and under the vision 71, so that the full pressure of air may pass into the cylinder 7U finder the iisiten 71. it will be seen that when the pr wure of air is admitted. undei the main piston 36 and the full pressure permitted tn flow through the passage 89 into the cylinder 70 lhe'relaiively different diai'nelers between ihe cylinder 70 and the pressure surface of the piston 66 is such that piston (56 and the pressing device 6% carried lllfll"6l)f \'\lll be "forced upwardly. This will exert pressure against the fl: sl packing heard 48 and the entire flash wil he elevated aleng' the reds l1 'arried' by lh frame 28 of the liash-siniperiingg;means, until the peeking heard of the (013G menihe' (inn-gees line under surface of the 'liessinn (lUYHX, 51 the presxure being sueh that the packing: beards will he press-ed inward 110 properly pack the sand aheut the pattern. At the time that the pressing deviee (El and the pislun (36 is forced upward lhe air within the cylinder will he inreed nuluard in the source nl supply or tank enni'aininn' lhe same through the paswigeway m and as seen as the valve 82 1S turned in lerm a communiealginn between the eXl anal and lhe pipe 85 the pressure within the e'vlinder 7i) acting on the. {listen 7] and the head of the cylinder 70 will leree the same downward again in its normal position. ll this means ihe piston ()6 may he made in lit liyhi all vihralien within him (:ylim ll so ihat the }H'( '%lll 2' dehee "i-l 'ill he pnsiiively nini'ed lmih up and dmi'n wiiheid tending to shake in jar ihe llash :nemher or members: which may he supported there-en or engaged thereby. This UVQITUIIIQH all lia hility to jar or break the meld during the lew-ering: oi ihe deviee 54 as might alt ii" fihe pinion (56 file hmfielj-J eneugh within Hie 0y inder to allow the (vlinder and device lileven with the flask or member lherenn. on said deviee to return to ias normal position by gravity.

The nope member of the llasl after the sand has been niinerlv packed or squeezed about ihe pattern and before the piston 66 is lewered should he held SO as; to he supported on the yn'eluing device 01. To secure this various means may he enipleyed. As ene means. I form the cle I h an upwardly projecting i 'all extending; {J n he sides ancienels el fihe device 81, anged u jiper pertimi end of 'Whieh is adapted a cylinder head iOl the ends sf gnirilea at each end of lil arranging ihe that he flasks usually vary then Width ihan in their length, and on Lhis account ll provide adjue'tifhle means for enand hairline; the flask cope at the sides l Two brackets 92 are held to the guides 91 and engaging a threaded opening in boss en each braeket is the threaded end-0f a halt $3. This hell, 93 is supperted in (1 lug 3 fleeting from the vvell of the device (31 and has nelygrnnal parts 95 by which Che said hell may he "ended, and carried by each bracket is e screw 93 the lower to engage the upper edge 0f the cope lrzme during); the squeez ing of the sand by we pressing; devices .61 and (i l, the nurpese of the sx'ews being; to limit the ex 11i of inwam movement of the cope packing or squeezing heard 59 and eensequenly the extent of compression in One end of ivhe bolt 93 has lefthrae l 'lherem. in which is l eld a lower end :21 which is Uapezed and 15 adapted in engage under the lugs formed on the side: Walls of the cone frame, a. spring 97- being arranged in each cylinder to force the in one direeien. These lugs 160 l) are tapered to a if, the tapering of ihe rods in en under the same and owing to (he angitilar p-asitien of -lihe reds; lhe e-npe will he held against vertical. ninven'iem'i when 'lClie Shir} EELS 98 engage the lugs; E00. lineh eind-er i provided with and tlieee heads are-eon heeled 3 3' a pipe 102 10 a 'nasaag'e 103 in the llangg e and this passage communicates with a lhreaded arena (3 The naseag'e 10 i is con neeted by a pipe 105 which is held it? the lhreaded sieni Ilil in; a hex 106 and gland 1011 and sax piston (i in" rag of lhe 1 121g piaie and pesltnmed between the press;-

vercieal nafisafze 104 through the the pattern asp *eviously (.escribed.

incense ing devices 61 6 1- esshcwn'in Figs. it. to 1, pressure isepplied to pack the send about 1 The pressure then turned'on so to cause tapered ends 99 of the piston rods 98 movoble in the cylinders to engage under the legs 100 which will hold the cope member or" the desk to the normally fixed pressing device. 61. The valve 82 through lever 112 is then operated to form a communication between the pipe 85 and the entices); 84, as soon as this occurs the sin passing throng the pipe 88 into cylinder 70. Will lower the movable pressing device 6%. 'Before this d -e the iii'igers nremoved away from the drag so that said drag will lower with the device 64. The parting plate with its frame will also lower atthis time on the rods 1 until arrested by the lips or bosses alt or e arms 37 and 38, leaving the cope held to the pressing; novice 61. The pressing device with the drag continues to lever away from the plate/when the mold will be complete. The parting plate and the sup 'iorting frame 28 may be moved outward and core, if used, be planted in. the drag and the two members of the dash again brought together by sir pressure on. the piston At this time the pressure in the cylinders 96 for the cope sup.

porting devices may be released which will peril the cope to lower with the drag when. the piston 66 device may be low cred in the manner already described and the flask then removed from the machine.

Tlhe stem of the plug of the three-Way valve or cock 82 has n hand lever 112 seecured thereto by which theseidvslve may .oe ro to permit air under pressure to to the cylinder 67, and this lever has an 11 connected to arm 11 1 which is pivoted 115 the base 10. A. bar 116 is carried the device to move up l therewith and said her is slotted as at into which slot extends s. projection, as from the arm 1141; The lower end of 116 is provided "with an adjustable 9 whereby when the device is moved upvvcrt e screw may be made to operate the arm 11% and owing to its connection with the valve operating lever .112 Will amtomatically throw the same to the position shown.

in dotted lines at 120 (Fig. 3) which will determine the extent of upward movement of the piston 66 and device 6 1- end automatically prevent the pressure from becoming too great. When the piston is to be lowered all that is necessary to do is to shift the le ver from the position shown in dotted lines the r. the lever 112 may be operated entirely by hand or automatically in the msnnerdo scribed as preferred.

' 1n Figs.'20 to different form of meens is provided for engaging end holding the cope of the flask to the pressing device 61.

means of bolts 124- .one end of Which is pro-- vidcd with right-handed threads and the other with lcrt-hnnded threads so as to move both brackets 123 inward or outward according to the direct-ionof movement of the said bolt 12 1. Each bracket 123 carries a cylinder 125, and in the cylinder 125 is a piston 126 which is forced in one direction by a spring 127 the said sprins' being seated against one end of the cylinder and in a recess in the piston. A substantially l..-shspcd her 129 is held at one end to the piston 126 niid said bar 129 extends through a packing gland 130 in the cylinder head 131 and moves with the piston 1.26. A: belt 132 is ad justnble in the lower end of the bar or bracket 129 and this bolt is held to said bar by a. nut 133. The inner end of the bolt 132 is tapered at 13 1 and is adopted to engage an opening or recess-135 which may be readily formed inlthe side of the flask and particularly those flasks which do not have the lugs 100 shown in the other views. The cylinders 126 each communicate through-i pipe 135 to the source of pressure supply and it Will'be seen that when air under pressure is permitted to enter the cylinders 126 in a manner similar to that already described the piston will be forced inward and in doing so These brackets are nd-.

loo

ivill force the tapered end 1341 into the rccess 135 of the cope frame and will support the same above the parting plate, the upper edgeof the frame being adapted to be enby the ends oi adjustable bolts 136 which limit the upward movement the cope and consequently the pressure exerted by the device 61.

It will be seen under the construction shown that during the up and down movement of the pressing device 61 the sand will be properly packed or squeezed about the pattern held to the pattern plate, end as soon as the cope is held to the pressing device 61, the lowering movement of the-pressing device 64 will cause the pattern and lts supporting plate to lower from the cope, and on further downward movement of the pressing device 6% the drag will. be removed from the pattern, thus entirely completing the mold during one complete movement of said pressing device 6 1. it will also be seen by the means shown the pressure on the cope and drag will vary so that the sand will be squeezed or packed in a greater e1; extent in the drag than in the cope, which is desirable. This is :mcomplished by atljusiing the screws 93 to adapt lhe same tc engage the upper edge oi the frame of th cope before the upward movement of the pressing device (3i has been completed. As the panic and parting plate (.livides the two members of ihe i'lasqc, ihat lhe. drag from the cope, it will be seen'thab any inovement of the pressing; device "ii-l after the ends oi" the screws 93" have eng. god the frame. in the cope will give aililitioi'ial pressure to the sand in the drag nieuibcnoi" the flask as the cope is held al' this time against". movement and consequently from any pressing ell'ect of the device 61. fore squeeze or compress the sand in the drag to a greaier exlenl. than calves place in the coy according to the additional movement given said device 64.

Vl hile l have not described a device in the way of a vibratory hammer to strike the parting: plate or other pari to assist. in the separation oi. the flask IDBiHl'JQI'S, it will be miller-stood that such a device or other means may be used; and it will be further understood that. the form of supporting frame for the parting plate as well as other features ma. be varied and that the flask members may have the sand supplied there to by a hopper or by any other suitable means.

From the foregoing, it will be seen that simple and ei'licient means provided whereby the pressing device operating; upon the drag of the flash may be 'iositively d1 'ven both upward and. downward, and lhc said device so slipper-ed that i: will have an even and nniforn'i movement so thai. ii; is not necessrn-y for the i'novable pressing device to be returned by gravity; zhat simple and cllicient means is provided whereby the cope of the flask may b'e'snpported above the pariing plate; that simple means is provn ed for supportingihc parting plate so that it may be moved to one side oi the machine; that simple means provided whereby 'thc packing board of the drag may be positively held and the said holding means automatically actuated to initially press the board against the sand in the drag, that simple n'ieans is provided whereby the flask may be held and supported heiween the means for exerting: pressure; and that simple means is provided whereby ihe pressure of air may be auto mitically cut of? or manually, as pre ferred.

Having thus described my invention, I claim as new and desire to secure by Letters Patcnr.

1. In a molding; machine. the combinaation of relatively mo 'able pressing devices, a r0- tacable and vertically movable parting plate adapted ":0 support the drag and cope mem- The device (El-will therc-' be of a flash on opposing sides there-Ollie mo e therewith, and means for simultaneusly squeezing the sand in both flask bers and then in one only and during the same relative movement of the pressing dcices.

2. in a molding machine, the combination of relatively movable pressing devices, parting and pattern plate having a limited vertical movement between said devices, means whereby the parting plate may sup" porn the liaslz members and be moved horizontally away from and between said press ing devices, and means whereby l" a cl may be simultancously squeezed in flasks and. then in one only.

In a molding" machine, the combination of relatively movable pressing (,ii.;1fi?i$, and a parting and pattern plain iniving; a iimiified vertical i'i'ioveincnt llwtween said devices, I! ea ls whereby the parting plate may support the flask rn'einbeis and be n'ioved horizontally away from and between said pressing devices, and means whereby the sand in the flask members may be ...ezed a, different extents.

4-. in a molding niacl'iin-e, ii" of relatively nmvable pr m pattern plate horizontally niov from said pressing devices, mice for supporting "the drag and cope m4, ,ibers of the flask on opposite sides of sf whereby ihe pattern pla ce may have a liniiled \'er nicvcnwnt, means cin'riedby one of the pressing devices adapted to limit the upward movement of pwern plate by engagen'ient with the cope l rame, means for supporting the cope. i'ncn'iber by the nbinal ion iiate, means pressing device, and means for operating one member.

Ill

a molding machine, combination of relative y n'iovablc pressing devices, a

)attern ila'e horimnlally movabl llO and from said pressing devices, means fonsupporting" the drag and cope niei'i'il'iers of ihe on opposite sides cl said plate, means carried by one of the pressing devices adapt ed to liniim the upward i'noven'ient of the pattern plate by engagement with the cope frame. means for supporting: the cope IYJQIYP her by fihe pressing device. and means for operating one of the pressing devices to press the sand in the drag member" of the flask to a greater extent than in the cope member.

1 6. in a molding machine, the combination of relatively movable pressing devices. a in 'tatable pattern plaie horizontally movable to and from said pressing devices. means for suppo riing lhe drag and cope members of the flask on opposite sides of said plate, means whereby the pattern plate may have a limited vertical. movement, bolts carried by one of the pressing devices adapted to limit the upward movement of the ps'stern plate by engagement with the cope. frame,

means for supporiing the cops member by the pressing device, and means for operating one of the pressing devices to have :1 move ment greater than the vertical movement of the pattern pleie and cope whereby the pressure on the sand in the drag member of the flask may be greater than the pressure in the cope member.

7. In a molding machine, thecombineiion of relatively movable pressing devices, a pattern plate horizontally movable to end from said pressing devices, means for porting the drag and cope members of ibhe flask on opposite sides of piaee, means whereby the pattern pleie may a line ited vertical movement, and holes carried bys limited vertical movement, means carried by one of the pressing devices adapted so llmll) tllGUPYVfiifi 'movemenii. of the petlzern plate by engagement with the cope irz nie,

and means for operating one of the pressing -tion of two pressing devices one of which devices to have a movement greater Ellen the 'vertical movement of the pet-rem plsse and copewhereby the pressure on the sand in ti e dragmember oi the flask may be greater than the pressure 111' the cops member.

9. ln s molding machine, the combination of'rcletively movable pressing ;deviccs, e vertically movablcpzittern plate adapted to support the drag and cope members of a flask on opposite sides thereof and-movi'ng normally between said. pressing devices, means for moving one of she. pressing devices to compress the sand in the flask membcr-s,;means located on one of thepressing devices adapted to support the cope member, and means whereby the drag member may be released from the pattern plate and supported by the pressing device during its downvvardmovement and during such movement cause thepattern plate to be separated from she-cope thereby completing" the mold during one complete movement of said movable pressing devices.

10. in e. molding machine, she combination of relatively movable pressing devices, a vertically movable pattern plel'eMeda-paed. to support the drag and cope members of a flask on opposite sides thereof end'moving movable pressing device,

normally l e-tween seicl pressingdevices, means for moving one of the pressing devices to compress the send in the llaelr members, and means whereby the member may be released from the'pettcrn plate and supported by the movable pressing device during the downward movement of said pressing device and during snchmovcment cause the pattern plate to be separated, from the cops, 11. In a molding machine, the combine tion of two pressing devices, a pattern place supporierl bevvveen she pressing devices and having means so suppers flask members on OPPGSIiJB sides thereof, c cylinder, a piston so movsblewithin seid cylinder and having a, relatively smell cylinder within said pistols, a normally stationery pislon adopted t Work Within the cylinder of the large pi ton and having a. tubular rod connected therewith, for preventing ill large piston from rooting and for. gain no; the "one, nieces connecting the two cylinders to the some source er fluid pressure supply whereby, to greater diameter of she lerger. cy inder, the fluid actuating xnesns Within she smaller cylinder will be forced. therefrom and s'cif. so under the same pressure as. that in the larger cylinder, end means for exli-ensiing the means for opto edapf; the drag member of the flesh to he positively moved therewith without j'srring, 12. in o, molding machine, the combine-- is movable, means for supporting the cope and drag members of cfiesk between said devices, 1i cylinder, a piston 'lTlOYllblfl Within said cylinder and having a relatively small cylinder within said piston, normelly ste tionery pision adapted to Work Within the cylinder oiwthe large piston and lniving s, tubular rod connected therewith, means 0011- necting the two cylii'iders so the same source of fluid pressure supply whereby, owing to the ,9, eater diameter of lehe lerger cylinder,

the fluid actuating means Within the smaller cylinder will he forced therefrom and still be under the same pressure as that in the larger cylinder, and means for exhaustion the means for operating; the large piscoir from the large cylinder and thereby permit; 1%

the pressure in the small cylinder to move the pressing device in a downward or on osiie direction to adopt the drag member of the flask to be moved therewith without jarring,

13, in a molding machine, *L'liecoxiibination of a normally fixed pressingdevice, a means for sup porting flask members hetvveen the pressing device's to adept to be compressed, 180

means foe forcing 'ihe ino zibie pi'essin' f clevice toward O il'lfii' dc ice, and.

,inaiir acimi ting means for (:on iolli' the extent of movement of said movable (io- 14-. In a molding machine, the conil Ina tion of a normally fixed piessingg device, 21 movable pr, i sjcvice, means supporting n bci's belw n the devices swi lo be"conipvcs levee; a valve in seic, icvc maiicniiy :zctu

verve for fozcing ward the other pi'e f device, and in conl'roiicl by the movement of soul pressing 1 device to actuate the lever and valve.

15. in a i'i'ioicling nan-pine, the combination with e. base lizivingli-ainc X iziclqeis pr 'ecting outward therefrom, of vectically QiLEEZlgEiil post scoured to one of the brackets, other frame bracket having :1 sic-tie anal, 2'; frame iii-n1 pivolnlly held to the post, 9. EOd held to the frame at one end and min-pied; to

ngngc the slot l end of the heme bracket, ancl'pn ig ilevi cs one of ma l [ii is mount ed on the frame arm and other the frame base,

16 a molding machine, the combine-- 'tion with a suppoyting frame, of a 3:" essing device, :2 secon pressing device, :1 piston to-wliich said latter device is iielrl, a c lll l' (l6? in which iston is n'iovable, i cylin- (ler forzni; It of said piston, relaxarianged Within the in- :1 Lively small piston and having a dmmeiev smaller fil'Yl'Gi/dl of the firsmnentioned piston, and ..ns for supplying, uncle? pressure to the innei" sn-gl. outer cylinders from the sno source of supply for the p11!- posc set t 17'. molv' machine, fine combinw iion with :4 snppoibing Frame, of a device. he 'zontziily movaliic means for sup poi'ting :2 :i wood pressii'ig device, :1

oevice held, a cylinder which said piston is movable, El cylinder i'minin 2i of said piston, ziiiv ly Sl'llilli entin-nary piston Mi'angeol within the inner vyiinrlci' and having a (liame as sznalier than the diameter of the meniimicd piston, and means for piston to supplying lli" under ,r ire :io the inner and outer q-Tlini'lei's om the source of snm'ily.

18, n a niolilin' machine, the combination with :1 .snmiiz ting "frame, of pvcssing device, means for suppozting fins-k, 2:, seconzl piet'singdevice, :z 3 linden, anal a piston movable \vii'l: id second device and having pressure so of relatively oilicrent U, 21ml in, s whereby air umler the same pressure Insv oi. .:mse(l (to ad; on snii i surfaces i'orr-e liie piston toward from i. one-(l {)FQFSlI device. 19.. in a i'flflnilflgf machine, the combinw ally sationary device, pivots-lily held and swingpressn 1i Ifask-suppoiizing means, a second press source may be SlH'lUllQlHEOHSly exerted on the pm on in opposite (ll'l'BCtlUilS while the air al'ie piston to move it in one din-2c be exlizn'zstcil in permit the Air lo piston in the opposite direction.-

JU, in n molding machine, the cornbinz1-- tion with a frame, of a pressing device, flasksuppoi'ting means, a second messing (levive, EL piston movabiewiili said second pressing device. and means whereby air under pressui'e from the some source may be simultaneously exerted on the piston in opposite disections.

21. In a molding machine, the combination wit 2: frame, of :1 pressing device, fiasl:- suppoz means, a second pressing (levice iocated be ii the firsi.nientione l pressing device, piston movable with said second pressing device, means whereby air under pressnve 'i'zom source may be simultaneously vicd on the piston in Opposite alive ons while the piston is moved in one direction, and means whereby the air aeiing on tliQpiSk /Ofi in move it in one (lirec a )1) may be ex TdSiiQCi to permit the air to force the piston in the opposite direction.

he combination with suppors, of a cinzillv fixed messing device, a .mov'able devicwn'ieans for movalaly support- 199 a flask between said devices, a piston able with one of said pressing devices, a noginally fixecl pislion held wiihin ine firstmenlioncd piston and having a tubular rod to admit air under pressure on one side of said 135 piston, means "for edzniifcing' air on one side of the larger pistoi'i nnc for conti olling the illl tlleiGi and a fixed finiile rod entering a recess in said larger P150913 and adapted to form :1 guide therefor,

:28, The con'ii ina 'tion with n suppor s, of pressing (lGVK a seconcl pressing device, means for? supporting a finsk between saicl devices, a piston movable with one of said acting on non may force the pressing devices, a normally fixed piston held Within the first-mentioned piston and bovin a tubular rodio adinii an under pressure on one side 0 said piston, and

means for admittingeir on one side of the large piston. and for controlling the air ticreo.

,3 '5 Mi",- .1 v, M P1314711 and 101 connonmg LL18 air L119}. so, and a fixed grooved guide rod entering a ccss in said larger piston and ode-peed to form a guide therefor.

25.. .ln molding machine, the combina- Zion Wlill a frame, of a pressing device, means for movinc said pressing device, means for support! D flash above said pressing device, a second pressing device, a lhreaded slem carried by said second presscvice whereby the latter may be manu- -djnsted, nd bolts mounted said pressing device pied to engage a part of the frame a ask to determine the press i1 effect of die second pressing device.

26. In a molding machine, the combination with a frame, of a pressing device, means for nicvingis id pressing device, means for si'ipporiing a flask above said pressing device, a second pressing device, and a bolt j-z'nolmledmi said naercssing l to engage a part or". frame device adaptc ll of a flash to determine she pressing'ellecc of said device,

27. A molding machine, comprising a frame. having one member pivoitally held to the other, a nor-mall fixed pressing device the pivoted member of the frame, means for adjusting said device, a movable pressing device, means for supporting a flash l'lecivecn the pressing devices, movable flash engaging devices mounted on the nor mally fixed pressing device, means to force said flask eng lug devices into engage ment \lllll the f l;

a pision to which she movable pressing" cevice is held,and means for posilively forcing the piston and the mo'ablc pressing device into position to exert pressure and in a direction opposite chore-from.

A, molding machine, comprising a frame, a, norndly fixed pressing device, means for adjusciag said device,'movable flask engaging devices mounted on the 1iormallv fixed pressing device, means :56 force said iiask engaging devices into engagement with she flask, a movable pre Zing device, horizontally movable and pzvotally held means for supporting a flash between the pressing devices, and a movable piston to which the movable pressing device is held.

A molding machine comprising a frame, a normally fixed pressing device,

means for adjusting said device, a plurality of cylinders located on the n i'mally fixed pressing device, movable flask engaging clevicos for the cylinders, means to force the hash engaging devices into engagement with the. flask, a movable presslng device and horizontally movable and pivotally held means for supporting a flask between the pressing devices. and a movable piston to which the movable pressing device is held.

30. A molding machine comprising a a normally fixed pressing device,

said frame, a, movable pressing device, pneumatically actuated means for forcing said second pressing device in opposite directions, a horizontally movable supporting means for a flash adapted to be moved be tween said devices, a pluralityof adjustable brackets carried by the normally fixed pressing device, a cylinder carried by each bracket, a movable flask engaging device for each cylinder, pistons to actuate said de vices and means for supplying air under prc are to said cylinders to force the de vices into engagement with the flask.

32.1he combinacion with a frame, of pressing devices, a plurality of cylinders, movable flask engaging devices for the cylinders, and means to force the devices into engagement with the flask.

83. The combination with a frame, of normally fixed and movable pressing devices, of a plurality of cylinders located on the normally fixed pressing device, movable flask engaging devices-for the cylinders, and pnemnalic actuating means to force the de vices into engagement With the flask.

34. The combination with a frame, of a pressing; device supported on said frame, a movable pressing device, a movable supporting means lo a flash adapted to be moved bet-Ween said devices, a plurality of cylinders, nnn 'able flask engaging devices one for each cylinder, pistons to actuate said devices, and means for supplying air under pressure to said cylinders to force the dcviccs into engagement with the flask.

35. In a molding machine, the combination with a support. of a pressing device, a second pressing device, a plurality of cylinders, av piston movable in each cylinder, :1 spring normally forcing each piston in one direolion, and means movable with the piston adapted to engage a part of a flask.

36. In a molding machine, the combination with a support, of a pressing device, a second pressing device, a plurality of angularly disposed cylinders, a piston movable in eachcylindcr, and means movable with each piston adapted to engage a part of the flask.

3?, ln a molding machine.- the combination Willie support, of a pressing device, a second pressingdevice. a plurality of angle Early disposecl cyll? 1 moving seicl second.

in. cyllmleg each e Z} en a perfi of 3L Ax The cuminin-L ab lmrizsntelly mm plate, a swam? arranged on: the Donna vice, brackets acljusteb a 001?; lmvmg opposlte m A gagmg the brackets M yest i from each other, anggummy 2 219 ders a 'uiston movable in cl;

plston x'ocl having tapered (5.8 movable with said pist n and Penn nutwm'cl Erom the cylin lugs on a ,me, K applying all" under p zessure a The eomnlnation frame, of piessing movable frame, sa ltfz'ame, a, seeo for: moving guides a rmnged (m ing alevlce braclvi', gulcles, a bolt l ands enga f'l t0 and. from each delve, a. J50. m

piston reel projecting (mew art adapted w '5; As

The eomblnation frame, ofa normally a movable frame, 1: parting plate, a see" pressing device, means-for meving said sec- 0nd peesi device, on e .norinally fixed press;

(let's, :1 piston movable En each'cylinrl'er a w 1 supper fixed prressm (:5

pisten rod memhle with each }')1"-l30i1 and progectmg outward from the cylmclez." and. mlap'aed to the frame, and? means: fur sup lying; air under pressure to the cylmclcrs.

4110 The eombinefien T-Vlilll a main frame having vertical 01" (3W0 re vely vmoyefloie pressmg; lees earned by the heme e :1 4 2112311 l ble parting pl "fllllii l 1'0' a a flask,

" The combinffon \v'l'L'll a. mam frmn Ll by the frame, a ll mtem'ledmte ram M e an arm :mm a T001, and "11ml, by we red. 1th a t lme .nvlngje zllj l v 1 pm 13 11;; ylate. due for 5 1 .enr'ng's for 0- tzx'inbly slq'yg'xn'tingz Enid parting plate frame, arms to which the barring." are .lllilkfily held to penniivertical m "Malling; plate 'fxwune and 0 en wlzic 5e ode to cmse parking; the pressmg 1 devices stpporbmg plate, a frame 01 etambly supframe slldmgly held "530 (,1. the priming adaptecl t0 a messing w 5 1 K1 jail-m9 am d e name for I n w 1 healing-3s are all 1" K to permit i 1): rating plum 1101i muvemen Q1 a flame, "50 engage one of the flask plessing beards, rods to Wlnch smd fin ers are held, eccentric means whereby lengthwise mm ement may be given to the rods to cwzse the lingers to press upml elm flask presser boa cl, tdgeshet with means )1 1 pivotally mounting the arms upon the Vet 11m! 0095 #10 311111; the frame te be devices or away 0m.

he cambiiwtion with a frame of two ly momble p essuredevices supp0rtf :zne said frame having av Verlndiing post, were g plate, a "m )lwlie, lDGfilll "m3? roiatably to which the arms 11 lg neicl ta perrmit vertie renting frame arms l'eluively movable one of the presser boards, rods to which said lingers wise movement may be given to the rods to cause the fingers to press upon the press r board of the ilasl together with means for pivotally mounting the arms upon the vertical post to per t the frame to be moved be tween the pi'esser devices or away therefrom.

48. The combination with a frame, of relatively movable pressing devices supported by'said frame, a parting plate, a frame for said plate, arms to which the bearings are siidingly held to permit vertical movement of the parting plate frame, clamping fingers adapted to engage one of the flask pressing boards, and means for moving the fingers toward or away from the flash.

The combination with a supporting frame, of a normally fixed pressing device, a movable pressing device, a valve, means controlled by said valve whereby air under pressure may cause the said movable pressing device to move in either direction, a bar carried by the movable pressing device and having a slotted lower end, a lever held to the stem of the controlling valve, an arm connected to the lever and arranged in the are held and means whereby length path of movement of the vertically movable bar, and a screw carried by the bar and adapted to engage the arm to operate the same and shift the lever to shut off the air pressure and thereby stop the movement of the movable pressing device.

50. The combination with a =supportingi frame, of a pressing device, a movable pressi g device, a valve, means controlled by said valve whereby air under pressure may cause the said movable pressing device to move in either direction, a bar carried by the movable pressing device, a lever held to the stem of the controlling valve, an arm connected to the lever and arranged in the path of movement of the vertically movable bar,

WILLIAM H. NICHOLLS.

Witnesses:

W. A. Townes, Jr C. BAn'rnLs.

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