US1597898A - Press - Google Patents

Description

Filed April 27. 1925 l E. G. Jaffe, [nue/#0r Pfg.

Aug., 31, 192e. 1,597,898

v E. G. JEGGE PRESS Filed April 27, 1923 shets-sheet 5 f. G. Jegye, m/emor Patented Aug. 31 192,6.

UNITED STATES PATENToFF-ICE.

EMIL G. JEGGE, or NEWARK, NEW JERSEY, AssIGNOR To E. i. nu PONT DE 'NEMOURS a COMPANY, OE WILMINGTON, DELAWARE, A CORPORATION l01s'V DELAWARE.

rnEss.

I Appncatin mea April 27, 1923. serial No. 634,982.

e. gyhydraulic, type and has particular re.-

lation to a press of this type having means to 'facilitate loading and unloading. Since the illustrated press has been advantageously used in, and is more particularly adapted to,

the art of forming cakes of pyroxylin plastic.

from acollection of smaller individual bodies of plastic, the invention is described with more particular, reference to that art'; but it will of' course beunderstood that the invention lis not limited thereto.

In the manufacture of pyroxylin plastics,

i. e. bodies'plastic under heat and p ressure and comprising nitrocellulose, camphorand liquid solvents in suitable proportions, it is` desired to unite by pressure and heat individual bodiesot' stock into large cakes (which cakes are later sheeted to ive sheet goods.) Inthe pressing, the stoc must be supported at its sides, as well as' at the top and bottom which are directly subjected to the pressure, in order to form the cake.

Thisside su port is given by the forming.

frame or c ase? of the press; but while a necessary part Ior' the press the chase ordinarily renders loading and unloading ofe the press decidedly awkward as. is evident, since it surrounds the charge. Furthermore, because the pressed charge adheres to the chase the freeing of the chargel from the chase is diiicult. The present press has means for overcoming/ these and various other -dicultis In brief, the press has a' chase and a sup rting plate which are relaf. tively movable, 1n the direction ofthe height of. the cake, whereby the chase may be moved to such a position that stock maybe placed on, or removed from, the supportin plate without interference by the chase; an also, the press has positively actuatable means 4for relatively moving the ressed cake and chase to positively free 0r strip the cake from the chase.

One object-f the invention is to provide a press having provisions for relative.moVement between the charg-supporting table and the charge-confining frame.

Another object is to provide a press having positivel acting means for relatlvely moving the c arge-confining frame and the charge. l

Another object is. to provide a press havmeans for controlling the 1 in the accompanying drawings.

of the ing provisions' for facilitating loading and un oading. .v

Another object is to provide means for controlling the pressure-Huid feed and .discharge ofa fluid-pressure press.

Another Objectis to provide av press of the characteristicsabove mentioned. having and discharge.

lTo these ends',l and also to improve generally .upon pressesand devices of the character indicated, the invention consists in the various matters hereinafterdescribed and claimed. The' morel clearly to describe; the invention, but without restricting' it thereto, the same is described with more particular reference to the embodiment thereof lillustrated In these .drawings:- 1

Figure 1 is a vertical sectional view taken substantiallyon the line 1--1 of Figure 2, diametrically of the cylindrical pistons, the

upper portion of the press bemg shown,

however, in elevation `for simplicity, and the central portionof the series of passages for temperature controlling medium being indicated merely by dot-and-dash lines;

yFigure 1a is a fragmental enlargement and lamplification of a portion of Figurefl;

in Figure 1;

' y Figure 3 is an end elevationfof the press with the parts in loading position, with the` lend .wall of the chase removed;

. ,Figure 4 is a fragmental view similar to Figure 3, with the parts in pressing po-- Figure 5 is a s ide elevation (las in Figure 1) of the iuldressure-iiow-controlling mechanism, partial y in vertical section;

mechanism,and Figures 7 and 8 are, respectively, a plan view and an elevation piping, essentially diagrammatic in character. I

Referring now to the drawings, and fo'r the resentvmore particularly to Fi the illustrated presscomprises the ase 1,

pressure-Huid feed a passages being simplified asv V100, 'Figure 6 isan end elevation of saidV fthe columns or supports 2, the top 3 supreceived within the chase "6i-for recipro'.

cative movement with res ect thereto, and

`this plate 'serves to imme iately carry the charge C (conveniently supporte/dv on a cake plate 11). The stripping platey 1() is actuatable by a piston 1.2 reciprocable in the plate ready -to transmit the pressure from the press plate to the charge; (Fig 1.) During this movement the pressure between the pistons 12 and 7 is of course relieved as required to permit the rise of the piston 7, seating of the stripping plate, and the clearing of the piston 12 from the stripping plate at 14).. By continued application of the pressure below piston 7 the pressing is done (Fig. 4).- l Upon completion of the pressing, thepressure 'fluid is introduced v etween the pistonsto. force down-fthe Apiston 7 The result is that while the cake is upheld byf'thefstripping plate the chase is positively forced down, thus positively, and with av forcethat may be made as greaty as circumstances j require, strippi1g""tl1eA chase from the cake. After'the strlpping the pressure may vbe relieved tol facilitatere-n 'i piston 7, the latter in practicalefli'e'ctserv`4 1n being what I may conveniently .term-,a piston-cylinder?, Fluid (water) under i pressure is introduced to, and may escape from, the cylinder 7 by the' pipe 13 communicating with the cylinder 7 below the piston l2. A clearance spacelll is'provided g as a cylinder for the piston 12, and" in the `recess. 15 in they sstripping plate l0.v for the piston-12, by reasonof whichthe i stripping plate can seat `on the press plate,

clear yof the piston 12. For venting the cylinder 7 above the piston 12, ,and alsol the clearance space 14, a vent Apassage 14a.

is provided in the stripping plate extending from the space 14 to the exteriorv of the plate, and thev piston 12 has a somewhat loose lit in the press and stripping plates providing for-,theypassage of air from the cylinder to the space 14' the vent 14 has free eommunicatlon with when the stripping plate is raised, and, of course, when the stripping Yplate is in lowered position its connection with the press plate isnot an air-tight one, so` that` moval of the cake and .the cake-'removed quickly and readily withoutA interference by the (lowered) chase. j`

Among the various operating features oi.

the press I particularly call attention to the-"positive stripping. -While it .might seem'that a reliance upon gravity for lowering the chase might serveth`e fact is that with materials such as pyroxylin plastic for example, the adherence between the chase and cake is so great that in a press, ofeasible size and weight gravity oper-l ation is not dependable.

rangement ensures positive stripping under all conditions. I also .call attention to the piston arrangements whereby/it is provided that the pistons, and connected parts, can

the atmosphere' free communication is provided at all times. Desirably the bottom of the plate 10 isl pro-. vided with strengthening ribs 10, and the plate 5 with grooves 5 to receive them.` p p In operation, see Figures 3,- 1, and 4,'

withthepiston 7 at the bottom of its stroke, and hence with the chase in ,lowered posifl tion, 'pressure fluid is introduced' through the pipe 13 whereby the piston 12 is raised' and the stri ping plate correspondmgly raised. (the ciearance 14 being takenv up).- Thismovement -s continued Auhtil the cake plate is brought substantially to' or-` above` the top of the chase (Fig. 3).` With the arts 1n this'position, the chase fis@ in lnoninterfering position and the press maybe readily'andconveniently loaded.` The loading completed, fluid is introduced at the pipe 9 and the press plate and chase raised the small piston.

be moved independently of each other to .any desired position to give the exact lo* cation of chase and press plate, stripping plate, and force plate desired under various circumstances. And I also call attention t Vthe provision' of the clearance space The present arabove the strippiIig-plate-actuating piston i whereby it is provided that when the pressing is actually being done the pressure is transmitted from the large piston,' throu` h the press plate and stripping plate'to t e charge,jinstead'of applied partly by For the ready and convenient' lcontrol of the movements 'of thepress by inexpert operators, a semiautomatic mechanism for controlling the now of pressure luidis preferably provided; Suchv a means is'indicatedA generally fat 16, llzligure 1, (and in detail in Figures 5 to 8). In general, it comprises lis a plurality of valves designated generally as y 17 ,for controlling the supply of high ressure-fluid supplied vby the pipe 18, an the I "supply of low the `pipe 19, lan

yuntil the stripping plate seats in thepress tpressure Vfluid. supplied. by.

means for actuating the valves in mechanically determinedsequence to direct the fluids to the pipes 9.and v13,. -and to permit discharge from the cylinders.

Such latter means is designated generally los , and transmit the pulling and as 2() and comprises a hand-operated shaft 21 for rotating cam discs 22 and23 to actuf plate and maintain the connection during' movement, as indicated at 27. At its other end the channel communicates with'aluid pipe 28 as indicated at'29. The pipe 28 (which is fixed to the stripping plate at 30y and has a sliding fit in the piston 12, at

A31), communicates with a channel32 in:

the piston, which channel in turn communicates with the space 24 before mentioned. The pipe 13 connects with the controller 1-6 and may include a flexible portion 33 providing for movement lwith theplate 10.

Thus in this way there is conveniently pro-` vided a proper connection between the'conl troller 16 and the space 24 behind the piston 12, with provision for the relative movements of the presslplate, stripping plate and stripping'piston 1 he pressing piston 7 and pressing plate 5 may desirably be connected for convenient assembly and dissembly as shown. In this construction a species of breech-block-locl 34 is shown comprising fan-like or radial flanges 7a, r7a on the upper portion (of t'he piston (Figures 1 and 2) received in corresponding recesses 5, 5a provided by hook-v `underside of the press plate casting. The

ike downward extensions 5", 5* on the open sector-shaped spaces between thee-X- tensions 5b are of course suflic1ently wide to permit entrance of the flanges 7a. In as. semblmg/the flanges 7u are introduced into such spaces and the parts-rotated to. introduce the flanges into the recesses 5* as-will be understood. Desirably a locking pin 35 is used to lock the parts against relative rotation.Y It will be seen that this construction provides a connection which, while` Aeasily assembled is well able to withstand to which it is subjected.

Preferably when, as in the present instance, a press embodying the invention` is intended for use with material, p as pyroxylln plastic, which is to be heated and cooled during treatment, the apparatus includes' provisions for the circulation of temperature controlling` fluid. vAs here illustrated the chase,"'forceplate, and cake plate are equipped with suchprovisions. They are indicated as series of pipes 36, 37 and' 38 suitably connected as at 38a (Fig. 2) for,

i 39 as shown. u that, assuming, of course, proper ad]u.stment pushing forces" pressed, form ribs on the cake.

llow from one pipe to the other and receiving at one end of the-series and discharging at-the other. As will be ,understood the detail arrangement .of the piping vmay be greatlyvaried, the invention not beingl confined to any particular detailed arrangement. Desirably .the temperature may be automatically controlled as by a suitable thermostatic control device preferably of the type exemplified by'a Tagliabue temperature control (not shown) the details ofthe same forming no part of the present invention. Desirably, the provisions for conducting temperature controlling medium to` and `from the cake plate 11 are such that. the flow channels 38 of cake plate are connected with the controlling-'medium-flow passages I upon placing of the c ake plate upon` the stripping plate, without the necess1ty for the manipulation of joints, couplings, or

- the like by the operator. To this end in the illustrated embodiment (Figure 1a) the press plate .5 is provided with flow p1pe units 39, to which the` flow passages proper 40 are connected. An lexpanding' spring 41, received in iay recess 42 in the plate 5 between the'bo-ttom' of the recess and a collar 39'* Von 't'liepipeunit 39, urges the unit toward the cake plate, movement being limited by the nut`j`43 abutting the underside of the press plate.` "The upper end of the unit 39 carriesaa";nippley 44 adapted to fit tight inthe mouth of a passage 45 in the cake plate andl communicating with the fluid channels 38. The stripping plate is provided With a recess 46 for receiving the unit In operation,A it is evident of the nut 43, when the ca e plate is placed on thestripping plate the nipple 44 connects the flow, pipe fluid tight'with the passage 45 and channels 38.

. Although ink theillustrated embodiment the chase and immediately related part-s are other desired form to the cake may be used. Also the parts may be shaped to give any acalled for detailed configuration to the cake. For example. as here illustrated more particularly in Figure 2, the chase may be prov vided with flutes y6* which` kas the stock is cake is sheeted (horizontally) theribs furnish tabs at` the edges of each sheet by which the same may be hung. If desired the upper surface of the cake plate may be pro-v of shapes to give a rectangular cake, it is i110 ,obvious thatparts l.contoured to give any'y WhenA the vided with dovetail ribs to lock the cake (as f it flows 'during pressing) to the cake platey so.v that ythe cake plate and cake may go to the sheeter as a unit.

Returning nowto the controller 16, the

detailed construction o f' the illustrated. con- -troller is as follows `(see Figures 5 to 8) The ,mechanism provides for the introduction of liquid under high pressure and liquid under low pressure Ito both cylinders, and' for suitable discharge of the liquid. Furthermore, it provides for the control of the flow in such a way that the various' desired operations of the pressare performed in predetermined order, all movements 0f the various valves being correlated to ensure the proper directing of the several flows and discharges necessary to the different called for movements and positions of the elements of the press. As before stated, Figure 5 is an `elevation of the controller, Figure 6 an end View, Figure`7 a plan view of the piping and Figure 8 an elevation of the same. The series of valves, heretofore designated generally as 17, comprises three pairs a, b,- and c, d, and e, "f, the pairs a, b, and c, al, being associated in like manner and comprising the spring seated valves working ihr-chambers a', b andc d which chambers are connected by passages, y, as shown. spring seated valves working in chambers e f connected by the passage z as shown. The various valve chambers are provided with the ports (L18, b, 647,018, d, 47; e9, f, f1, located as indicated. The paira. b, controls high pressure supply to, and all exhaust from, the cylinder 8; the pair c, d, controls high pressure sup ly to, and all exhaust from, they cylinder 7); the pair e, f, controls low pressure supply to both cylinders. As will be understood, the liquid may enter the valve chambers and flow around the valves proper, the valves serving to control the flow of the liquid along the valve passages. The high pressure supply p-ipe 18 is connected with the .ports a and cls; the pipe 9 for the large cylinder 8 connects ports b9 and e";l an eX- haust pipe 47 connects with the ports b" and du; a connecting pipe 48 connects the port d and pipe 13; the low pressure supply pipe 19`eo`nnects with the port fla; and

" the supply pipe 13 to the small cylinder 7 operation is evident.

connects with the port fla.

The valves are controlled and moved by the operating member 20, operated shaft 21 andthe cams 22 and 23, as heretofore stated generally. In detail, `the cam block 22 is provided with a pair of cam grooves 22a!) and 220,'d, and the cam block 23 is provided with a cam groove 236,7. Associated with each cam groove is a rocker arm, as 49, fulcrumed at 50' and provided with the cam follower 51 and tappets as 52 and 52. The The cams are of course contoured to give desired sequence of operations, the center lines of thevgrooves, to give the sequence set out below, being suhstantiallv indicated by the lines 22a,b, 220,(Z,

and 230.?, in Figure 6. The operating member 20 is provided with a, plurality of operating handles, as I, II, III, IV and V corre- The pair c, f, compr1ses the sponding to the various operating positions,

and a spring pressed pawl 53'serves to locate the operating member in each position, the vertical position on the upper are of swing desirably being the operating or indicating position of a handle. (In Figure 6, the member 2O is shown at position III which corresponds substantially to Figures 1l and 5.)

The sequence of operations and positions ofthe valves is desirably as follows: V neuraise chase and press with low pl'essure, a

closed, b closed,.c closed, d open, e open, f

7closed, low pressure supplied to cylinder 8 from pipe 19 through channel z, and port ef and pipe 9, and exhaust open from cylinder 7 through valve d to pipe 47. III (revolve wheel clockwise from IV) to raise chase and press with high pressure, a open, b closed, c closed, (l open, c closed, f closed, high pressure supplied tocylinder 8 from pipe 18 through valve a., channel port b and pipe 9. II (revolve wheel clockwise from III),to force down chase and strip with high pressure, a closed, b closed, c open, d closed, e open. fc losed, high pressure supplied to c linder 7 from pipe 18 through valve c, cliannel'y, port e, pipe 48, and pipe 13, valve c open to admit low pressure los4 to cylinder 8 to give a cushioning effect y (total pressure in cylinder 7 being greater than that in cylinder 8) and the low pres-l sure liquid backing up into the accumulator or escaping through a safety valve as dcsired and as will be understood lby those skilled in the art. I (revolve clockwise from II) to continue stripping with low pressure.

V (revolve clockwise from I) valves b andV d, being open to relieve all pressure, stripping plate sinks to lowered position. It will be noted that the use of both high and low pressure at different stages of the same opmit iow past it through channel .av to port b",

, or is closed and is also determined by means for individually an trollably conducting pressure fluid to and' from-the cylinderand the piston-cylinder, 'and charge supporting parts carried bythe :to the press plate, such means comprlsing fluid passage provisions extending `from the the valve b, depending on whether it be open to permit flow past the to port b, or is closed.

I claim:

1. In a press, in combination, a force plate, a press plate movable'toward andfrom the force plate, a chase iixedly carried with the press plate, a stripping plate within the case and movable .toward and from the force plate independently of the press plate and chase, and provisions for moving the press plate and carried chase independently of the stripping plate.

2. In a press, in combination, a force plate, a press'plate movable toward and from the force plate, a chase Xedly carried with the press plate, a stripping plate within the chase and movable toward-and lfrom the force plate. independently of the, press plate and chase, and provisions forpositlvely actuating the press plate and carried chase to move the same into charge-released position, and for maintaining the stripping plate in pressing relation with said forceplate, thereby to positively strip the charge from the chase. v

3. In a iuid-pressure-operate'd press, vin combination, a cylinder, a piston-cylinder therein, a piston inthe piston-cylinder, a press plate Acarried by the piston-cylinder, a chase carried by the' press plate, ia stripping plate carried by the 'piston and -within said chase, and means for. conducting pressure fluid to and from the piston-cylinder. Y l, f 4. In a luid-pressure-opierated press, in combination, a cylinder, a piston-cylinder therein, a piston in-A the iston" cylinder,

(l) separately-conpiston and the piston cylinder. l j l p 5. In a iuid-pressure-operated press, 1n combination, a cylinder, a. piston-cylinder ,therein and having a closedv bottom, a piston in the'piston-cylinder, means for conducting pressure'iuid vto and from the cylinder, means for conducting pressure luid to.and from the piston-cylinder such means communicating with said piston-cylinder between -the bottom thereof and the piston, and charge supporting parts carried ton and the piston-cylinder.

6. In a; iiuid-pressure-operated press, in. combination, a cylinder, a` piston-cylinder;` therein and having a closed bottom, a piston in the piston-cylinder, a press plate'carried by the piston-cylinder, a chase carried by the,

press plate, a stripping plate carried by tlie piston and within said chase, means for conducting pressure fluid to and from the cylinder, and means for conducting pressure valve body' cylinder and the y y' the pis- 1 fluid to and from the piston-cylinder vsuch means communicatingl with said piston-cylinder between the bottom thereof and the piston. 4

`7. In apfluid-pressure-operated. press, in Y0 combination-,` a cylinder, a piston-cylinder .flows of pressure iuid to and from the cylinder and the piston-cylinder to operate the press plate and chase, and, the stripping plate in predetermined sequence.'y

8.' In a luid-pressure-operated press, in combination, a pair of plates, assembled for relative movement there-between, means for moving one of said plates andcomprising a 9o cylinder and received piston, and pressurefluid-passage means for conducting fluid to the cylinder by way of said one plate while the same is moving with respect to the other, such means comprising fluid passage provisions extending from the exterior of saidv one plate to said cylinder, and a pipe connected 'with the exterior end of, said fluid passage provisions for movement with said one plate and s'lidably mounted in the other plate to slidein the direction of movement.

9, In a fluid pressure-operated press, in combination, a pressplate and a stripping plate, means for moving the stripping plate with respect to the press plate and comprising al cyllnder and received piston, and pressure-luid-passage means forv conduct-ing fluid .to the cylinder by way of thel stripping plate while the same is moving with respect exterior lof the stripping plate to said cylinder, and a pipe connected with the exterior end of said Huid passage provisions for movement 'with said stripping plate, vand sli'dably mounted-in the press plate to slide in the direction i movement.

:10. In a lluid-pressure-operated press, in combination, a ,press plate, astripping plate vreceived thereon,a cylinder-,a piston-c lin- 1gb .der received therein andl havinga c osed l bottom and connected with said press plate .Y to actuate the same, a piston received in said,

las

id passage in said strippingplate ,and 13g.

'in predetermined sequence, and

having one endI connected with the iuidV passage o f said piston and its other end opening upon the exterior of such plate, and a pipe connected with -said stripping plate at such open end to move with said plate,

said lpipe extending through said press plate` such provisions including movement-controlling means for operating the s aid structures .1

in predetermined sequence.

12. In a iluid-pressure-operated machine of the character indicated, a charge-shaping structure, a charge supporting structure, a pressure abutment, iuid-pressure-operated means for moving they two said structures with respect to each other and to said pres-- sure abutment,l and movement controllin jmeans frdirectin the llow of fluid 'tosai 18. In a press, in combination, apress 13. In a-iiuid-pressure-operated machine ofthe character indicated, a charge-shaping first means in' pre etermined sequence.

structure, a charge' sup orting structure, a pressure abutment,r iluid-pressureoperated means .for moving the two said structures with respect to each other and to'said ressure abutment, and movement contro lin r means for directin the flow of'fluid to sai irst means-in pre etermined sequence, such s l fbottom-to-bottm `'distance between said recesses bein v less than the length of said operated means, a series of valves -in theAVV movement'controllingmeans including a piping system connected to'the fluid-pressurepipin system, and means in the character of -va ve operating levers',-. cams actuating, said levers, and contoured to move the valves means-for actuating said cams*` 14. The combination withv a fluid-pres,- sure-Operated-press comprising a. air 'of cylinders and quencefor pe orinance of the desired movement of the pressing elements, of a pressureiuid'control, such control comprising a system of piping for conducting iiow to and discharges from, the' cylinders,.a zsferiesof valves incorporated in the piping system,

and means foroperatingthe-valves in predetermined se uence\ giving the desired.

vmovements `of t e pressing' elements'.

'15. In a ressure-uidfcontr'el', for combination wit a luidres'sure-operated press lcomprising a pair o cylinders and: pistons to be'operated in sequence for performance of the desired movements of the pressing elements; such contr/ol com rising a s'vst'em of piping for conducting owjto and discharge from, tliecylinders-,a series of valves incorporated in the-,piping system f or con-r `formoving the press ,a pushin element having a recess in alignsaid first named recess and means istons tobe operate se-- voperating pistoni trolling the Hows through the system, and 'i semi-automatic means for operating the valves in predetermined sequence giving the desired-movements of the ressing elements.

16. In a press, in com mation, a press plate, a stripping plate, an optional Connection between said plates for actuation of the stripping plate by the press plate,lmeans formoving said press plate, and means for moving said stripping plate independently of sai press plate, there being an optional operating connection between said stripping plate and its operating means, said two optional connections bein coordinated to provide for actuation of' te stripping plate by the'press plate during pressing. 17. In a press,i in combination, a press plate, a strip ing plate arranged to rest on said press p ate,fmeans for moving Jthe stripping plate independently of the press plate, means for moving the press plate,

plate-moving means.

plate, a stripping plate having a recess and arranged-t0 rest on said press plate,means late and comprising ment -wit ifor moving the stripping plate independently .of the press plate and comprising a (pushing element received in said recesses an means whereby such element may be moved, the

stri ping-p ate-pushing element whereby sai stripping plate may rest on said res's plate for actuation by such plate an its pushing element, free from operating connection with the stripping-plate-pushing ele- *plateE y the press late, a piston for movin (Y the press plate, an a piston `for moving said stripping plate independently of said press plate, there being an optional operating connection between said stripping plate and its said'two optional connections beingcoor inated' for actuation of the stripping plate bythe press -plate during pressin l 20. n a under contro ed temperature yand pressure,

kin combination, a pressure abutment, a press `p1a`te,-J`a chase carried thereby, a stripping plate received within the chase, means for movin the pressplate and chase, `and the rese for treating `the Ichargei stripping plate, relative to said abutment to apply pressure to the charge, and a charge- .Carrying plate received on said stripping in combination, a press plate, a stripping plate received upon said press plate and movable to and from the same, means for moving the stripping plate, a charge plate carried' upon said stripping plate and provided with passagemeans for a temperature controlling medium, and conducting means for`conducting medium to said passage means, such conducting means being carried by the press plate4 and arranged for lprojection through the stripping plate ,when the same is in immediate relation to said press plate, and for fluid tight connection with said passage means.

22. In a press for treatingthe charge under controlled temperature and pressure, in combination, a press plate, a stripping plate received upon said press plate and movable to and from the same, means for moving the stripping. plate, and a charge plate to be carried upon said stripping plate and provided With passage means for a temperature controlling medium, such passage means having an exterior controllingmedium-receiving aperture, said press plate carrying a controlling medium pipe, and said stripping plate having an aperture, said rst-named aperture, said second named aperture, and said pipe being located for registration.

23. In a press for treating the charge under controlled temperature and pressure, in combination, a press plate, a stripping plate received upon said press plate and movable to and from the same, means 'for moving the stripping plate, a charge plate to be carried upon said stripping plate and provided Withpassage means for a temperature controlling medium, such passage means having an exterior controllingmediumreceiving aperture, said .press plate carrying a controlling medium pipe, and said stripping plate having an aperture, said irst-named aperture, said second named aperture, and said pipe being located for registration, said pipe being of a length to extend through said aperture of the stripping plate, When said press plate and stripping plate areI in immediate relationship,

and abut the aperture of the charge plate, and means for holding said pipe in close relation with such aperture.

In testimony whereof I aiix my signature.

' EMIL Gr. JEGGE.

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