US1820437A - Press - Google Patents

Description

PRESS 1931- J. J. CAVAGNARO 1,820,437

Filed July 16, 1930' 5 Sheets-Sheet 1 c/OHN d. CAVAGN R J MZ% A TTORNE Y Aug; 25, 1931. J. J. CAVAGNARO 1,320,437

' PRESS Filed July 16, 1930 5 Sheets-Sheet 2 E5 I INVENTOR ,5 JgHN d. CAVAGNARO.

Aug. 25, 1931.

.1. J. CAVAGNARO PRESS Filed July 16, 1930 5 Sheets-Sheet 3 INVENTOR dOZN flaw ATTORNEY g- 25, 1931- J. .1. cAyAsNARo 1,820,437

' PRESS Filed' July 16, 1930 5 Sheets-Sheet 4 (JOHN 1. CAVA%R mm (ATTORNEY Patented Aug. 25, 1931 v V Appiication filed July 16,

7' iinventio lrelat'esto pre'sscs'used prinembossing or otherwise acting b of jm at eri al, such as artificial sinuses-131 a, which is fed in a es ,0 'tep's Pbetween' the press platens are-' lhvaapart mechanically to perinit forwa iiiovenient I of the web, and are {forced together hydraulic pressure to .the"fweb and impress 'the pattern of an Iengrfave d."plate'therein; In such a press the platens h'a vem'f bemo ed apart 'a considerable distanc'c tohpermit the forward feeding of the web; whereas the actual embossing ople ration while it necessitates the application 9f eg Cssivejpres'sure'to the web, is accompanied by'S'light niQVBmQHt of the press plate "tb ard'p a t -i i fjMoiie specificallylstated, my invention relates to presses for the purpose mentioned and :wher' the movement ofthe-platens apart to perm t-ragweed; feeding of the web and back toward and 'intobr nearly into engagement withone another, is accomplished by mechanical inans, and rapidly and during short part ofLthe cycle of operation of the press; whilethe actual pressing operation after the platens have grasped the web between them is due to hydraulic pressure acting throughout a comparatively long time. Each cycle of operation of such a press istherefore made up of a'com'paratively long application of 'great pressure to the web by hydraulically operated means followed by a comparatively sliort'part which is produced by mechanical devices, and during which the press is opened and the Web is moved forward to receive an other impression thereupon. The part of the cycle which consists in the pressing of the web by hydraulically operated means after the press has been closed is therefore several times as long in time as the mechanically operated part of the cycle. during which the press is opened and closed and the feeding of the web takes place. v

In my improved press the mechanical and the hydraulic operations are entirely independent of one another, except that the merhanical phase is produced by a rotating main operating camand the hydraulic phase is controlled by a valve device which is operated -SOHN J'. cAvAGNARo, OF RZDGEW G NEW JERSEY z 1 PRESS 1930. Serial No. 463,431.

by the same cam. This permits the mechanical and hydraulic elements of the press to he designed each independent-of the other/and with reference towhat each is to'accom plish;

and the two to be co-relatediwith[reference to the speed of operation of the asant;

sired duration of the mechanical and hydraulic phases of thecycle, and otherwise with reference to the work which the p'ress is. todoQ I The drawings accomrrinyin a and forming a part of this applicationillustratethe preferred form of my invention, although the same may be einbodied in other forms; and I regard my ,inventionas including all such variations andinodifications of theiparticular form thereof illustrated and hereinafteridescribed and explained as comedwit hinthe scope of the concluding claims; wherein the press is omitted so that thetwo ends-thereof may appear in a single View. Figure 2 is view showing the presslasseen from the left'hand end thereof. rcferringto Figure l. I I i l i Figure 3 plan, as seen looking down from a horizontal plane indicated by the line 33, Figure 1.; parts at upper levels being brokenaway in part to give a better understanding of thc appearance. in plan, of parts below them. I

Figure l is afragnientary sectional vview upon a larger scale. and upon'avertical plane indicated by the line 4i4, Figure 3,',1ooliii g to the right. of the liftiug'vand supporting mechanism for the lower platen "of the press. Figure 5 is a similar fi'iQW showinghthe parts shown in Figure 4: in other positions. :he platen being; up in Figure 5 and down n Figure i. Y

Figure 6 is a. fragmentary view showing"- is a view showing the press' i n 1- inn the right hand side of Figure 2, the parts for the most part being the ones illustrated in Figures 4: and 5.

Figure 7 is a fragmentary view taken upon 5 avertical plane indicated by the line 77 of Figure 6.

Figure 8 is a view showing one of four cams fer lifting theupper platen, the view being'asseen from a vertical plane indicated by the line 88, Figure 6..

Figure 9 is a view showing the parts shown in Figure 8, looking down from a horizontal plane indicated by the line 9-9 of Figure 8.

Figure 10 is a view showing the main operating cam, the valve device for controlling the hydraulically operated parts, and other adjacent and related arts of the press, the same being as seen rom a vertical plane indicated the line 10-10, Figure 11.

' Figure .lI'is a view showing the parts shown"in"Figure 10, as seen from planes indicated by theb'roken line 1111, Figure 710' v Figure. 19. 15a View showing the port and valve feature of the valve device for controlling the hydraulically operated parts of empress;

' Figure 13 is a fragmentary view showing another form of mechanically opera ted mech- 9an'ism for lifting and lowering the lower platen-and supporting it during the hydraulic pressing part of the 'cycle of the press.

Referring now to the drawings, my improved press has a lower head 15 and an up- "ppr head 16 held at afixed distance apart by ur columns or-standards .17, which resist the stresses due'to the operation of the press. The n. per surface'of the lower head provides a horizontal flat surface'of large area, and resting thereupon are two cylinders 18 to which oil or equivalent liquid .is supplied under high pressure during the hydraulic phase of the cycle of operation of the press. In Figure 1 the central parts of the heads and the inner halves of both cylinders are broken away so that both ends of the press where most 'of the operating mechanism is located will appear in a single view; while the plan view Figure 3 shows the lower head entire 50 and the relation of width to length, in the direction of travel of the web operated upon, of a press actually built.

' Verticall movable in the cylinders 18 are pistons. 19 li aving cup leather or other form of packing 2O suitable for liquids under high pressure, at their lower ends and the numeral 21 designates a vertically movable hydraulically operated ram member which rests upon the upper ends of the pistons and is lifted'by them during the pressing open.-

tionj. the movement of the yoke and the parts carried thereby due to fluid under pressure supplied to the cylinders, however, being slight as compared with the movement imparted to the lower platen by methe parts carried thereby properly in the applied through the ram member to impress chanical means to close and open the press, as will hereinafter appear. The ram memher is provided with depending pins 22 which enter holes in the pistons to keep the ram in proper position upon the pistons, and suitable removable stops 23 having set screws 24 rest upon the lower head, se ve to adjust the cylinders upon the np'p {flat surface thereof and positiontlieramfnemlier and press. The pins 22 are ofsuch length below the under surface of the ram member that the ram may be held up, as by wooden struts, placed between it and the upper side of the lower head, and the pistons permitted to descend independently of the ram vmember;

whereupon and after removing the stops23 the cylinders with "the pistons'inthem be moved sidewise and removed,fronithepress. The upper surface of the rammemberjm (which as will be appreciated e t ends irom one side of the press to the other, F1gi1ne '3, and takes up substantially alhthe s eatetween the columns 17)f-is inclined aipward from its front and rear edgestowardit ,3 ter, as shown'in Figures2,',4 15,whe 1t 'is highest; and above thelram and movable vertically relative I thereto is; the lower platen 25. The upper fixed is secured to' the under sideof thejn ppenhead 9- 16 and is indicated,conventionally, numeral 26; and it is fcomn ionly 'pr'ovided with internal passages so that it may be heated by steam. The upper and lower platens carry the usual engraved plate, and matrix ll the usual backingplates, and whateverptlier parts may be necessarytoproduce the'desired pressing action upon the web operated upon. 'These'parts will varywith different web materials, patterns to [be impressed thereupon, etc, and they are not descr'ibd in detail as they form no part, of this present invention. The web or fabric to be embossed or otherwise operated upon-is fed between the platens when they are apart; and after the 'low'er' platen has been raised by mechanically operated means to bring the platens together with the web between them, hydraulic pressure is l 15 the pattern or design in the web, as will be understood. The lower platen 25 is guided in its movement toward and from theupper platen by suitable guides, preferably in the form of pins 27, depending from the upper platen and extending through hearings in ears 28 at the sides of the lower platen, .to thereby secure more perfect registration of the engraved plate and matrix which cooperate to impress the design in the web being operated upon. The lower platen is moved rapidly upward and away from theram member (and preferably downward also, although its downward movement may baby gravity) by positively acting mechanical 5 5 After the lower .platen has reached. its uppermost position it is supported by wedge- ,shape'd transversely -movable supporting members operating in between the inclined clipper surfaces of the ram member 21 and the underside of the platen; and thereafter andthroughout the greater part of each cycle of operation fluid under pressure is supplied -to the cylinders 18, and pressure sulilcient to emboss the web is applied to the lower platen ,gfithrough the pistons 19, ram member 21, and

wedge-shaped supporting members men- --tioned.. The downward movement of the .lower fplate-nprovides sulficient space hetween-the platens to permit the convenient 2 feeding forward of the web, and its following upward movement brings it. into approxir'natecontactwith the wveb; These are moveinentsof comparatively large magnitude and are-produced by mechanical means; whereas theihydraulically operated parts of-the press sproducebut slight movement .of the lower platen,-a-; the platens are then close together .with the web grasped between them.

In order to accomplish the positive me chanieal'lifting. of the lower platen the four {corners thereof are-provided each with a lifting-Zmember, prefe'ably-in the form of @a cum, all four of which act simultaneously .to Iliftthe platen. These cams are indicated 3 all by the numeral 29 and they are connected with-the platen through bolts 30 which per- .mit a slight pivotal-movement of the cams. Prefeflblythere are brackets 31 at the corize'rs which'are fastened to the platen by cap screws 32, see Figures 6, 8 and 9, which brackets form the immediate supports for the cams; and these brackets are provided with abutments-33 between which and the cams springs are placed, the positions of the camsbeing adjustable by bolts 35, one of which appears in detail in Figure 8. These springs are so still that they act as nonyielding members through which the lower platen is lifted to bring it into contact with the web: but they will yield to prevent injury to the lifting mechanism, as will hereinafter appear, during such slight movement as occurs while the hydraulically operated parts ;are operating to einboss the web.

The lifting members 29 are provided with grooves 36 in their inner sides; and 37, 3b, see Figure 2, designate oscillating lifting levers which are supported by bolts 39, 4-0 carriedby the ram member 21. so that the levers move with said ram member. The upper ends of thee levers haverollers 41 which travel in the'grooves 36; and an upwardly extending arm 42 of the right hand lever is connected with the lower end of the lever 33'' at the left so that the upper ends of the levers and'their rollersmove simultaneously toward and from one another, by an adjustable link member- 43. a This lower platen lifting'mechanismv is :duplicated at each side or thepress, see F igure's land 3, so that allfour; corners of the. platenare lifted simultaneously, as will beunderstood; The outer parts of the cam :grooves 36 are. inclined and their inner parts arehorizontal, as'illustrated, so

that liftin'gof the upper platen occurs While 5 the rollers lllmove along the inclined parts of the grooves; after which the rollers-may move along the horizontal parts of the grooves to a greater or-less extentwithout lifting the platen. levers 38 arepivotally, connected through adj ustable substantially horizontally disposed links 4% with theupper ends of the'arms 45 which are carried by an oscillating shaft 46,

which extends :from side to sideof the press,

see Figure 3, and whichshaft is: supported in bearings in brackets s 47; extending from the lower head 15 whichserve also to support feeding mechanism for the web; which-mechanism, however, is not illustrated as" the sameseo forms-no part of theEinven-tion 'to which this pro ent application relates. 'The shaft 46 is oscillated by an arm 48 having a roller 49 at its lower end which runs in a cam groove 50 in the outer side of a rotating main oper ating can't-$1 located atlthe left side of the press, see Figures 1.-- and and-which cam operates the upper platen lifting mechanism above described.- This cam. also operates a valve device for controlling the'supply of liquid under pressure to the cylinders 18 to operate the pistons 19 andram member 21, wherefore as will be appreciated themechanically and hydraulically operated parts are operated in proper sequence to carry out the cycle of operation of the press.

The cam groove 50 1S circular throughout somewhat more than three-quarters of its length, and has a shorter port on of somewhat less than one-quarter of its length 1 which is displaced toward the center of the cam; so that the lifting mechanism is operated to lift the lower platen while the portion A, 13+ of the groove moves past the roller -19. -B to C moves past the roller the platen is supported in its uppermost position, during which part of the cycle hydraulic pressure acts to emboss or otherwise act on the web: and finally and throughout the part C,=A of the groove the platen is lowered and returns to the lowermost position in which it is shown in Figure 2. During the somewhat more than three-fourths of each complete rotation of the cam 51 while the (12:)

part of the cycle hydraulic pressure within as The lower ends'of thezg ien as the circular part from 1 15 the cylinders 18 is I communicated tie-the lower platen through-the;pistons--19, the ram '21, and .ith'e; saidsupportingplates and the em- ;bossinglohthe iweb is gaccoinplishedy These isupportin plates; see Figures '2 and 4 to '6, --are' shoivna;asiwedge shaped in form and as n-estizng uponianiisupportedbyithe ram memilber: 2l;-.; andlthey' zextend, seeLFagure 1, t-hrfou'ghoufi ithe; lengthof the ram member. am fl hey Hare designated gby the" reference nur'merals'fiflgrfitl, andzarei obviously arranged in vbetxweenlthei lupp'eniend act :the ram member 'nildltheaunder hide..-ofthe'lower'rplaten and imov'e' 'uponlthe inclined upper surfaces of the rhnriimeinberw i1 n'lhe :suppbrtingnplates P52, 53 1 are moved lbowand wand fromi one another and transverse to the tram member by the same mechanism .Whi'chl lifts thei lower platen; sothat upward -,gg .move1nenfi of? the platen: and inward movelment goftthe supporting-plates. occurs simulitnmeouslygi movement being communicated 51t the. plates; hyz-inwarlli extensions of the pins :5 lvhsihiclr-areaatathe upper ends of-the Q25 ilenersd3138 2 and. (which support the rollers All; sea lFigure: i 6; "said extensions entering 'l'aushedulioles in the:sides I or; the supporting platesadj aoentrtheirouter corners .asshown. I lllhe inner; edges. ;of-; the supporting plates, use Figuresfi; i lsand 5,:are :shown asprovided ivithlhardened-i steel plates the :outer ends mi Whichvslide: mpoinhar'rlened steel plates 56 isccureldeto theisidesi of the ram member 21, itoutherebylessens the wear upon the ram ear-ehnerrlbepawhichlis commonly madeof cast (iron, dueltothe movement of the plates upon titer-inclined: upper surface thereof. These wearr'plates iengzigewone another-at the end ot; the amovement of the supporting plates toward oneanotheryand-at' the end of such movement the inner ends :of' the supporting platesiabiit against-upwardly extending projectionsr58-o-fthe pins 22,.these being located inwardia considerable distance from the .sidesofthe ram member and'lower' platen -as1willbe appreciated. 'lhe'undersi'de of the-lower platenhas recesses into which the projections58 extend when the platen is in its lowermost vposition, as shown in Figures .554 .4: antl'fi.

hThe supportingplates 52, 53 are shown as cored out;in their-under sides to lighten thernyandion their upper sides they are provided. with a plurality of upwardly ex- ;-55 tending, supportingribs 59 extending parallelwith oneanother and throughout the lengths of theplatessee Figures 3, l and 'l heunder side of the-lower platen has similar. depending supporting ribs 60 which .330 lie alongside the ribs .59 when the lower platen-is down and the supporting plates are-in their outer positions shown in Figures B and 4. lVhen the platen has been lifted, however, and -when the supporting plates have "been" moved into'their innermost posiroller is in the part B, C- of the groove of constant radius hydraulic pressure will be communicated to the lower platen to emboss the web as liereinbefore explained;

There will or may be some slight space between. the ends of the ribs 59, 60 in the position in which they are shown in Figures 5, 6 and-7, as some clearance is desirable in order t0 permit the ribs 59 to move beneath the ribs 60, although it may be reduced tothe vanishing point by bevelling the extremities of the ribs; and the springs 34, which are" still enough not to vield under the weight of the vplaten 25 but will yield under hydraulic pressure, are provided to prevent the transmission of the excessive pressure during the embossing of the web to the rollers 41, which are then in the horizontal parts ofthe cam grooves 36, and to other parts of the mechanism which lifts the lower platen and moves the supporting plates.-

The construction of the lower platen and the supporting members therefor illustrated and described permits the platen to be made unusually light in weight for a member of large area and which has to be subjected to hydraulicpressure, often of several hundred pounds per square inch, so that it can be moved rapidly and with little expenditure of power as the inertia and momentum to be overcome are not great; and at the same time provides a scheme wherein the platen is supported throughout substantially its entire area from the massive ram member ofthe press during the pa of the cycle of operation thereof when hydraulic pressure is being applied to the web to accomplish the embossing, pressing, or like operation performed thereupon.

Fluid under pressure is supplied to the cylinders 18 to accomplish the embossing of the web while the lower platen is supported in its uppermost position as aforesaid from an accumulator or equivalent source of high pres-sure through a pipe 61 leading into the casing of a controlling valve device 62, from which device piping 63 leads to the cylinders; which piping serves also to permit the flow of fluid from the cylinders and from the valve device through a waste pipe 64.

This position of The internal port and valve arrangement I of the controlling valve is illustrated in Figure 12 wherein the numeral 65 designates the supply and 66 the release of waste valve. These are operated by a single pivotally supported oscillating lever 67; and springs beneath the valves keep them both normally closed and-the-lever in its central position. lVhen the lever is moved to the right the supply valve 65 is opened and liquid under high pressure flows through the piping 63 to the 5 cylinders, and when the lever is moved to the left the .waste valve 66 is opened and pressure in the cylinders relieved and a small quantity of liquid may pass from the cylinders through the piping 63 and waste 'pipe64. A roller 68 is provided on the lever 67 for moving the same first in one directionand then in the otherfroni its central position; and the lever also serves as ahandle whereby the waste valve 66 may be opened manually when the lower platen is down and the press is open, to thereby permit further downward movement of the pistons and ram member and a separation of the platens to a greater extent than they .are normally apart when the press is open so that the embossing plates may no removed and changed. The lever 67,

however, can' bezoperated-manually only when the lower platen is down, and the press open, and can neverbe operated to open 3 the supply valve '65. The valve device: is operated by a cam groove'69 in the rear or right hand surface of the main cam member 51 into which groove the roller 68 of the lever- (37 extends and within which it lies.

' )bviouslv the supply valve should be opened and pressure applied to the lower platen as soon as practicable after the samef has been moved into its uppermost position and the supporting members have been i: moved into the supporting posit-ions in which they'a re shown in Figure 5 and this opening occurs when an inclined part of the inner side Wallet the groove 69 at the point -D-- asses theroller 68. The supply valve after Eaving been opened remains open while the ortion from -D to --E- of the cam move; which is of constant radius, moves ask the roller 68: and hydraulic pressure is applied to the lower platen and to the web during 'this comparatively long part of the ode produced by each complete rotation of the main cam 51.

The part '-E of the cam groove 69 reaches the roller 68 about the time the part C of the cam groove 50 reaches the roller 49; and as the main cam continues its rotation a projection from the outer side wall of thegroove 69 engages the roller 68 and swings the lever 67 to the left, thus permitting the supply valve 65 to close and opening the waste valve 66 and relieving'the pressure within thecylinders 18. Then and as the cam rotates further the part C, A- of the groove 50 moves past the roller l9, the supporting plates are moved from the positions in which they are shown in Figure 5 into the positions shown in Figure 4, and the platen 25 descends and resumes'its lowermost osition shown in Figure 2.

The opening of the waste valve 66 is of short duration as it is necessary only that the hy-- draulic pressure to which the lowerplaten is subjected be relieved. 'There is therefore a minimum of waste of the high pressure liquidand very little of it flows through the waste pipe 64 and, while there is or may bersome downward movement of the piston'sin the cylinders, such movement is of slight ex-' tent. 7 The portion of the groove 69 between the" points 'E and D--' is'widened inward,; as shown. This allows the lever 67to be moved to the left and thewaste ivalve 66 opened, thuspermitting the pistons therammember and lower platen to descend as'is necessary when the embossing plates are to be removed from the press; although .if the ram member is kept from descending as by suitable struts between-it and the lower head, then the pistons alone descend and when their upper ends are clear of the lower endsof the pins 22 the cylinders with the pistons in them may be moved side-wise andremoved from the press; The outer side wall of the wide part 'E, D- of the groove 69 lies close to the roller 68 so that while the waste valve 66 may be opened manually when the-press is open, it can be opened-at no other time. The supply valve 65 can never'be opened manually because'movement of the lever 67 to the right is prevented" by the outer side wall of the widened part -E, D- of the groove 69 which acts as a stop for the roller 68 when the press is open; while at other times the roller fills the entire width of the groove and prevents movement of the lever. The 'main cam 51 determines the cycle of operation of the press and in addition to operating the platen lifting and supporting mechanism and the valve device which controls the supply of liquid under pressure to the cylinders as hereinbefore explained, it has another cam groove in its inner side and a peripheral ridge 71, both concerned with the feeding of the web operated upon which feeding mechanism, however, is not illustrated as it forms no part of this present invention. The main cam is supported upon a short supporting hearing or pin 72 carried by a. bracket 73 attached to the lower head 15, r and is fastened to a gear 74 by bolts 75 and pins 76 or otherwise, so that the gear serves to drive the cam. This gear 7 4: is driven from a main driving shaft 77 which is rotatable in a bearing in the bracket 73 through a pinion 78 on the end of the shaft and an idler gear 79, see Figure 10; and the numerals 80, 81 designates similarly shaped plates, the'former being fastened to the bracket 73 by a bolt 82 so as to be in effect a part thereof. The 'plate 81 is spaced apart from the plate and the; two plates are held together by bolts 83 hav-' ing shoulders for spacing the plates the prop-. or distance apart; and 79 designates an idler gear which is carried by a short shaft, the

end's oft whichl'are -'snpported% in oppositely locatedibearingsrih the-plat'cs'80, 81.; Other pairs of bearings 84; 85, a's'many as may. be re duired,'ra'ree:.prov'ided: for supporting other: idlerigeais #50 that ae di lfe-rent=mai-ncam,' driv-z ing gear idler gear and pinion'thh-n those illustre-ted: may ;be substituted for'itlie ones: il

lustratedie Thisi permits -othr main cams' similar to the cams '51 but wherein the duram tidn oi'wthez' platens lifting andi supporting phase iOEf lthe'hyclej and ofl the part-of the 3 cy'cle 'tll'ibing'whiclihydra ulici pressure is ap-- plied-zflwthrs=lower1platen, are difierenfi thanwith the'canrfli illustrated; to :be, usedliii place at the mid cam ;=a;nd p'rdnides al'sofor the speed=ofi= frotatiom of the: main and; the; dir'ration-,-5therefore,- oi'lthe -cyble' i of thee inni ZZZ-""5 l w- :6 PE-' 1135 -t' I The "right- "hial'idi end: oivthe? maim driving- 2g. shaft Was-supported in aibearingini a bracket.

86 isuppdnted; by: the 'ldwerzheadwlfi-j and shaft is driven by a' igear.=8 i=iast thereon-.. Mesh-ingiwith the gear 87 is a pinicm-SS which is: fneelynrotatabl ion a.- z'shaifiti 89, but which; pinion! imaiwbe clutched" toszthe :shafti' by a Clutch: z9lhiso am are: win: he-

drinen minim-the shaft'89ithrdligh the pinion 88- nnd gealr 8't'-;::Thefshaft 89iiswdriven by agariQzl: East thereon; and this 'gearisin turn dams-b a :pinion '.92 upon the; right: hand end: 'o'fea iinotor- 'ishaft 93=cxtendirigi 1 0m an elethid-dhctorvfiidvhich-teriies to-:d1iive the Press: HF [Z'a i'f v 1- .:1: ts P TbE' itctcrc 'li cs I i numeral: 95 -de'signates: a mller'wh chi is'suppprtc'd by adjnstable farms lfiwb'idit are piw'tall a-ttach-edito the platen gara e tbe-r-blis 00 which: fasten: the; lefthenduli i 'aseptsdid -roller' being; to hold the'en 3102 inq mbl 'efi fiheweb unand;away=.fromz the ktit' hand edge (if-the lower platcniwhen it; F5 d.: nvn",-: and the webisbeing fedforward between-the platens. a;

' In the form of my invention thus far de- 153 scribed a' separate and distinct mechanism is provided for-li-fting and lowering the lower pletem-"and the wedge-shaped pl aten sup portingniembers'havenothing to do-with the liftingof the said platen-. Figure 1'3, how- 56 ever, illustrates a form of invention wherein 1 wedge-shaped members 97 rest and move iipon'iuclined uppersur-faces of arain member 98'si'milar to the ram member 21 and V which' "members are mechanically operated 56 by oscillating levers 99', 100 carried by the ram member," and which are operated from a mainoperating cam in substantially the same way'as'i'nthefo'rmof my invention hereinit? Inth-i's form themembers 97' act to lift the lower platenlOljaml also to support the same inits uppermost position; and inorder to increase the-lifting efi'ect'o'f single pairs of cooperating wedge shaped surfaces, like the under sides' of the 'i'nember's'97 and the inclined upper'surfaces of the ram member, the members are shown inclined upon their upper sides also 'and the lower platen as having inclined-surfaces upon its under side.

Yvhen hydraulic pressure is transmitted throughthe lifting and supporting members 97 tothe lower platenlOl in this form of my invention there is some tendency of the members 9'1 to move. outward,: because of the outwardly acting components ofthe ferces whicliare transmitted=tothe; -lower platen; but .the operating mechanism may: be so designed as'to prevent suchmovement, 'es peciallyrwhen conditions:- permit the use of lifting members having single 1 pairs .ofco-- dperatingiwedge surfaces (in which case the upper surfaces of thelifiring-mcmbers and the underside of thelower platen are horizontal surfaces) or of lifting membersthe inclined surfaces-oi? whiclr' are at sufliciently acute angles was h'orizontah Both these conditions may be otherwise expressed .by saying' that when the liftinglof the lower platen does not have .tosbe :great then-the. parts may be readily designed so that the lifting memberswilhhave' little :or-no tendency tomove outward when pressure i'sapplied to the lower platen; this being-especially so in cases where the pressure applied-to the-web; inpounds per square inchidoes not have to begreat as hydraulically applied pressures are com monlythoughtofi' v v i'laving' -thus described my? invention and. explained the operation "thereof, I claim anddesire-'to='secui'e by Patent 1 'i ll rln a =press afzfiherclass described, a ver tically movable hydraulically operable ram member; :iwalv? device for controlling the movement. of said ram'lnember; a lower plat-- en arranged above and movable relative to said-ram member; a-fixed' upper platenarranged above said lowerplaten; mechanically operated means carried by and movable relative to said ram-member'forsupporting, said lower platen in its uppermost position and transmittingforce thereto from said rammembcr, and for permitting movement of said lower platen toward said ram member and into its lowermost position; and a cam member adapted to operate said lower platen, said mechanically operated means and said valvedevice. 1

2. In a: press of. the class described,.a ver-- tically movable ramv member; a lower platen arran tied above'and movable relative tosaid ram member: a fixed upper platen arranged above said lower platen; and mechanically operated smqporting members carriedby and znevable'transverse to said rammember for supporting said lower platen in its uppermost position and transmitting'force thereto from. said ram member, and. for permitting movement ofsaid lower platen toward saidv ram member and into its lowermost position.

3- In a press of the class described, a. vertica-llyc movab le hydraulically I operable ram' inemberi; aalower platenarranged 1 above and movable relative torsaid rammember=;:a fixed uppe-nplaten'arranged above said lower plat enq'and mechanically operated wedge-shaped.

member, tonmoving sa id; lower platenupward' and away, it

ticaillyi movable hydraulically operable ram member; a-Jfixed Topper platen; 'ai'vertically movable lower platenarranged between said ra'nrmemberf and said upper platen; mechan icallyh-operated--means"carried by said ram a member formoving said lower platen upward and-away fromsa-idram member; and 'mecli'a-nioally operated wedge-shaped supporting? members located between said. ram member'and saidzlo'we'r platen and'movable transo; verse to said ram member-into positions to support-said-lower platen in its uppermost position, andto permit downward movement thereof into its lowermost position.

QGJI'n apress of the class described, a ver- 4 tically movable hydraulically operable ram memberfga fixedupperplaten; a vertically movablelower platen arranged between said ram member and said upper platen; a wedgeshaped supporting memberlocated between s'aid ram "member and said lower platen and movable transverse to said. ram member into positions to support said lower platen in its uppermost position,- and to permit downward movement thereof into its lowermost position;

. and mechanically operated means for simultaneously moving saidlower platen upward andaway' from said ram member and said wedge-shaped supporting member transverse to saidnrmn member.

'50:: 7. In a press of the class described, a vertically movable hydraulically operable ram member; a fixed upper platen; a vertically movable lower-platen arranged between said ram member and said upper platen; wedge- XiS shaped supporting'members located between saidrlower platen" in its'uppermost position;

rom :saidram member; andTme-x chani'call yoperated supporting -members' 10- catedbetw'een said ram member and said 10'W:-.I

253 enplaten and movable into-positions to -sup-.;' port said lower-;-pla ten in=itseuppermost pos'i--, tion, and to permit Z downward cmovement thereof into it'sflowermost. position; s 5 i .5. In a press offthe class desc'ribed,'aver said ram memberv and said' lower platen and; movable toward and from one another'trans-t verse to said ram member and into positions to support said-lower platen in its uppermost position, and tozpermit downward movement; thereof :into -it's lowermost I position; 5 and mechanically operated meanspforsimultancously moving-said lower platenr upward and: awayffrom'said ram member and said wedgeshaped: supporting members =transverse to; said ram member.

r r '7' 8.' In -a 'press' of: 'the: classldescribed; a -'ver' tic'a'lly movable hydraulically operable ram member; a fixed :upper platen; a vertically movable lower platen arranged zbetwcensaidx rfam: member and said upper platen-: \'vedg-s-;

shaped supporting: members carriedby said ram member and located between said ram member and said i lowerrplaten, randmovable toward :and from one another transverse to: said ram =memben pinto *positionsato' support: said lower platenin gits' uppermosti positiom. and 'tOsPIIHiiJwdownwardi movement thereof; intoaitsvlowermost positibn; andlmeohanically-.= opeiiatedimeansl carried rbyesaid ranr meinber: for simultaneously imovingsaid: lower-platenupward iandoawlay from :said ram member and:- @said Wedgeashaped a supporting members: transverse to; saidr'ammember.- 1: 9; Iirapress :ofthe class described,--a ver tically movable hydraulically operable ram; member; :11 valve device I for controlling the movement of said ram member; a .lower' platen arranged above and-movable relative tosaidram: member 3a fixed upper'platen' a r'-- ranged a bovc saidlower. platen mechanically operated supporting means zmovable E trans verse i to said r-am and in "between the zuppei end thereof and the under side of-said lower platen, for supporting said plateniin its llI)-- permost position; and a rotatable, cam memberadaptcdto operate said lower platen, said supporting means and-said valve-device.

-1(). In a press of the class described,-a' vertically movable ram member; a lower Tplatenarranged above'and movable relative'to said ram member; a fixed upper iplaten arranged above saicllowerplaten; mechanically operable supporting members movable transverse to said/ram and in be'tWeen-theupper end thereofand the under side of said'lower platen, for supporting said platen in its up permost' position; and a rotatable cam operatively as'sociated'withsaid supporting members to move them as aforesai 11. In a press of the class described, a vertically-movable ram member; a. lower platen arranged above and movable relative to .said ram member; a fixed upper'platen arranged above said lower platen mechanically operable wedge-shaped supporting members movable toward and from one another transverse to said ram and in between the upper end thereof and the under side of said lower platen, for supporting said platen in its upplaten a vertically movable lower platen lo-' cated between said-ram member and said upper-platen; supporting members located between said ram member and said lower platen .and movable into positions to support said lower platen in its uppermost position, and to permit down-ward movement thereof into its lowermost position: means carried by said ram-member for moving said lower platen and said supporting members as aforesaid: and arotata le cam -operatively associated with said means for operating the same.

- '13. In a press'of the class described, a ver-- tically-movable hydraulic:.1lly operable ram member; afixed upper platen: a vertically movable lower platen located between said ram member and said upper platen; wedgeshaped supporting members located between said rammember and said lower platen and movable transverse to said ram member into positions to support said lower platen in its uppermost position; and to permit downward movement thereof into its lowermost iositionameans carried by said ram member 1 for moving said lower platen and said supporting members as aforesaid; and a rotatable cam operatively associated with said means.

14. In a press of the class described. a verticaliy movable.hydraulically operable ram member; a fixed upper platen: a vertically movable lower platen located between said ram member and said upper platen; supporting means carried by said ram member and i arranged between the same and said lower platen and movable into positions to support said lower plat-en in its uppermost position. and. to permit downward movement thereof into its lowermost position; means carried by said ram member for moving said lower platen and said supporting means as. atore said: a valve device for cont-rolli no the movement of said ram member: and a rotatable cam operatively associated with the means aforesaid which is carried by the ram member and which cam also operates said valve device.

15. In a press of the class described. vorticallyI-movable hydraulically operable ram 2 member, a fixed upper platen: a vertically movable lower platen located between said ram member and said upper platen; wedgesaaped supporting meml'iers carried by said ram member and located between the same and said lower platen. and movable transverse to said ram member into positions to support said lower platen in its uppermost position, and to permit downward movement thereofinto its lowermost position: means carried by said ram member for moving said member; a fixeduppet platen; a vertically.

movable lower platen located between saidram member and said upper-platen; wet-lg shaped supporting members carried bysaid ram member and located between 't he'same" and said. lower platen, and movable transverse to said ram member int'o-positioiis to supportsaid lower platen'inits position,- and to permit downward movement thereof into its lowermost position; means carriedv by said ram member for moving said"- a;

lower platen vertically and said' supportin'g members transverse to the-ram 'mem'ber'as aforesaid;- a valve device for'oontrolliu the" movement of said ram: member; and a: re at'a' ble cam adapted to operate the ineansaforesaid which is' carried by the rani member and to also operate *saidvalve device, said-1 cam having agroove in'one of its sides-tor operating said "means and a "move in its opposite side for operating sai valve'd"e viee.= 17. In a pressof the class described; a vertically movable 'ram member having in oiined surfaces uponits upper side; a verti' ca ll y movable lower platen located above'sai'df ram member and having a: plurality 'of ribs upon its under side; means for'movin-g fsaid lower platen upward and away=froin said member;- wedge shaped supporting" ram m mbers resting upon-the inclined surfaces of said ram member and movable toward'and: vfrom one another, and havin g'supporting ribs upon their'u-pper sides adapted't'o lief beneath the ribs of the platento thereby szrpport the same in its uppermost position; and means for moving said supportingmem-- bers and said lower platen as aforesaid.

18. In a press of the class described, a vertically movable ram member having i'n clined surfaces upon its upper'side; averti (rally movable lower platen located abovesaidram member and having a plurality or ribs upon its under side: wedge-shaped" support-- iwz members resting upon the inclined sur faces of said. ram member and movable toward and from one another, and having: supporting ribs upon their upper sides adapted to lie beneath the ribs of the platen to therebv support the same in its uppermostposi-' tiou: mechanically operated means carriedsaid ram member for moving said supporting members and said lower platen as aforeraid: and a rotatable cam operatively associated with said last mentioned means.

19. In a press of the class described. a vertically movable hydraulically operable ram member having inclined surfaces upon its-upper side; a vertically movable lower platen located above said ram member and havin a plurality of. ribs upon-its under side; wedge-shaped supporting members restingupon the inclined surfaces of said ram member and movable toward'and from one another, and-having'supporting ribs upontheir upper :sides adapted to lie beneath the. ribs-of the platen to thereby support-.athelasame in its-{uppermost position; mechanically operated means carried by said rant-member for; moving said supporting members and said lower platen as aforesaid; valve device for controlling the movement of said ram member; and a single rotatable cani op'erativelyf associated with said last mentioned l'll Zl1lS2\lld with said valve device.

--\20..In;:a pressqotthe-class described, a-

waxed uppeizvzplatem-ga Vertically movable lowenplatenliaving az-plurality of ribs upon its underazsidflasa verti'callybmovable ram niember located :below: said lower platen and having ilnclined wsurfaces upon its,- upper, 2 -szde; ameanseforximovlngf :sa1d lower platen upward. and: away from :said ram member;

cooperatingguide members carried by said 7 fixed and movable platens -for;:guidin'g the latter in its movements; wedge-shaped supfp0rtl1lg members resting upon the inclined surfaces of saidram member and movable toward and I from. one another, and having supporting ribs upon their upper sides adapted to lie beneath the .''ribs of the lower sfiiplaten to thereby support the same in its uppermost position; and means for moving said supporting members and said lower platen as aforesaid.

21. In a press of the class described, a

lixed upper platen; a vertically movable lower platen; a vertically movable ram member located below said lower platen and having inclined surfaces upon its upper side: means for moving said lower platen upward 6 and away from said ram member; cooperating guide members carried by said fixed and movable platens for guiding the latter in its movements; wedge-shaped supporting members resting upon the inclined surfaces of fiflisaid ram member and movable toward and from one another and adapted to support said lower platen in its uppermost position; and means for moving said supporting members and said lower platen as aforesaid.

" 22. In a press of the class described, a vertically movable ram member a vertically movable lower platen located above and movable relative to said ram member; two mechanically operable supporting members located between said ram member and said platen for supporting the same in its uppermost position from said ram member, and for permit-- ting said platen to move into its lowermost position; and four ifting members carried by said ram member and acting upon the four corners of said platen to move the same upward and away from said ram member-.1

23. In a press of the class described, a yer-,- tically movable ram member; a vertically movable lowervplaten locatedabove and- 7e movablerelative to said ram member; four pivot-ally supported oscillating levers. carried by said ram member means wherebythe upper ends of-said levers actupo'n the four corners of said lower platen.tovmove it-=up 75' ward and away from said ram member; wedge-shaped supporting -member s carried by said rammember and movablestoward and from one another between I said ram member and saidlower platen, and acting to sb support the same in itsguppermostgposition; means whereby said supporting membersare. operated by said levers;.a .rotatable '{main cam member; andmeanswhereby-said levers: are Operated bya mm mb w lufs;

24. In a pressof'theclass-described a ver i a a mo b i s ember hating 0111 0;: i y in ned upper-sur a es; a av rt s l ri movable lower platen loeatedgaboyeand le la ve toisafl, r -ms ilb yeed ha n p i y of P ll upror ilgir bs ween-i its pnder side; four lifting membersfsecured; one to each corner of saidplaten andbavipg cach'a cam groove; four pivotall asilpportedg oscillating levers carried-by sai ra u memes' ber; rollers at the upper endsof saidlev rsi. and which operate-in the groovesraforesaida to move saidplaten upward and awayirom said ram member; two wedge-shapedgsiip porting members-movable upon the inclined} 166 surfaces aforesaid toward and: from .one: other, and which have ribs upont-theiriupper sides which lie beneath the ribs oi said platenwhenthe same is in its uppermost -position.;,- pins at the upper endsof said levers extend, V" ing into holes at the outer ends of saidrsupiporting members and whereby saidimembers are moved as aforesaid; and means -fo1iop-. crating said levers. i

25. In a press of the class described, afvertically movable ram member ;havinginclined,= surfaces upon its upper side; =a vertically, movable lower platen located above and'moibable relative to said ram member, and having I a plurality of parallel supporting ribs upon 1 its under side; four cam members-secured one to each corner of said platen; f0ur-pivo'tqv ally supported oscillating levers carried: by said ram member; rollers at the upper endst of said levers which act upon said ca-m's to move said platen upwardas aforesaid ;.;twowedge-shaped sup-porting 'members 'mov-T able upon the inclined surfaces of said member and transverse thereto, and which: have ribs upon their upper sides Whichnlie beneath the ribs of said platen when the same is in its uppermost position; means whereby said supporting members are operated byand from said levers; and'a rotating main op-.- crating cam whereby said levers are operated.

I platen to move it upward; a cylinder wherein said piston moves; a valve device for controlling the supplyof liquid under pressure to-s'a-id'cylinder, and for relieving the pressurein's'aid cylinder and permitting slight downward movement of said platen; means for'op'eratin'g said valve device; and means permitting said valve device to be operated \vli'enthepress is open to permit outflow of liquid from said cylinder and movement of me piston therein downward to a greater exsaid ey1ig1de andior relieving the pressure tentthanYit moves-when the pressure in the cylinder'is'relievedr 27 L' In a pre$sofithe class described, a fixed upper platen; fa lower platen movable toward and froln's'aid upper platen to close and open the "press';a piston acting upon said platei'iftoi move it upward; a cylinder wherein 'said p'isto'n m'o'ves a valve; device for controlling tlie supply'ofliquid-underpressure to in said cylirlderand. permitting slight downwardm'ovementpf. said platen; a rotating cam 'foi dperatin'g'said'valve device automatically to Zcau's e; the press to operate in accord anc'e' Withfa definite and predetermined cycle; and'means 'permitting said valve device to be operated manually, but only when the press is open, topermit outflow of liquid from said cylinder and movement of the piston therein -downwardtoagreater extent than it moves when the pressurein' the cylinder is relieved.

"28.1111 a'press of the class described, a fixed upperfplaten; a lower platen movable toward and from said upper platen to close and open' -tlie press; a piston acting upon said platen to move it upward; a cylinder wherein said piston moves; a valve device for controlling the supply of liquid under pressure to said cylinder, and for relieving the pressure-in saidcylinder and permitting slight downward movement of said platen; an oper'ating- "member for said valve device, the same having a roller for operating it; and a rotating cam having a groove into which said -rol-ler' extends and wherein it runs; said groove having a long portion of constant radius which acts to operate the valve device to; admit liquid under pressure to the cylinder, a projection for operating the valve device for a short time to relieve the pressure in lower platen to move it upward; a piston for moving said ram member upward, said piston being separated from said ram memher and movable downward independently thereof; a cylinder wherein said piston moves; a valve device for controlling the supply of liquid under pressure to said cylinder, and for relieving the pressure in said cylinder and permitting slight downward movement of said ram member and lower platen; means for operating said valve device; and means permitting said valve device to be operated when the press is open'to permit outflow of liquid from said cylinder and movement of said piston downward independently of said ram member.

30. In a press of the class described, a bracket having a cam supporting pin extending therefrom; a driving gear and a main operating cam secured together to move in unison, and which are together rotatable upon said pin; a main driving shaft, one end of which is supported in a bearing in said bracket; two plates supported by said bracket and which are spaced apart from one another; a driving pinion upon the end of said shaft and between said plates; two oppositely arranged bearings one in each of said plates; and an idle gear supported from said two bearings, and through which gear said pinion acts to drive said driving gear.

' Signed at Harrison, New Jersey, this 9th day of July, 1930. i

' JOHN J. GAVAGNARO.

thecylinder, and a portion which is wider than the rest of the groove and in which the roller is when the press is open, and during which time the valve device may be operated "manually to permit further downward movement-of the piston.

29. In a press of the class described, a fixed upper platen;'a lower platen movable toward and from said upper platen to close and open the-press; a ram member acting upon said

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