US2535642A - Wet press - Google Patents

Description

Dec. 26, 1950 B. LIEBOWITZ WET PRESS Filed Sept. 29. 1949 4 Sheets-Sheet 1 Hai.

z z z f A26 Z' W ff W? IN VEN TOR.

/Lee 4 B. LIEBOWITZ Dec. 26, 1950 WET PRESS 4 Sheets-Sheet 2 Filed Sep'h. 29, 1949 INVEN TOR. OQ

Dec. 26, 1950 B. LIEBowlTz 2535542 WET PRESS Filed Sept. 29, 1949 4 Shee'bS-Sheet 3 I INVENTOR. 7M

Dec. 26, 1950 B. 1EBowrrz 2535,642

WET PRESS Filed Sept. 29, 1949 4 Sheets-Sheet 4 Patented Dec. 26, 1950 UNITED sTATr-:s PATENT OFFICE wm' PRESS Benjamin Liebowitz, New York, N. Y., assgnor to Trubenizing Process Corporation, New York, N. Y., a corporaton of New York Application September 29, 1949, Serial No. 118,657

cordance with the teaching of U. S. Patents Nos. i 1,968,409 and 1,968,410, it is the practice in` ufusing to first submit the articles to mechanical pressure without heat while moist with a solvent. Since most preferred solvents, such as a mixture of acetone and alcohol, are highly volatile at room temperature, it is very desirable in practice that the two actions of moistening and applying mechanical pressure occur simultaneously. The si multaneous application of the solvent and mechanical pressure is usually achieved by use of. a device known as a wet press. `j The wet presses in general use at present comprise a press having a pair of bucks or platens which are enclosed in a housing; this housing contains a reservoir for the solvent which is fed to the working surface of the bucks or platens by capillary action through cloth wicks which are wrapped around the bucks and extend into the solvent in the reservoir.

This type of wet press, although widely used, has several disadvantages. The principal difiiculties are (a) that of obtaining uniform moistening under normal Operating conditions, and (1b) the limitation of the size of the work or the number of parts which can be simultaneously treated. In the wet presses in use at present, when the 'press is closed on the work, solvent is presed from the padding between the bucks. Some is absorbed by the work, as intended, and the ex" i cess drains back through the wicks or drips into the housing. When the press is opened the solvent starts feeding back from the saturated portions of the wicks to those portions of the wicks be; tween the bucks which had been squeezed rola.- tively dry during the pressing cycle. Thisfeeding of the solvent, depending. as it does, on capillarity, is slow, so that under normal-operating time-cycles, the rewetting is not uniform; then, if the bucks are more than say five or six inches wide, the time required for re-saturation of the padding is more than the normal interval between cycles, so that the work is improperly moistened.

There are several other disadvantages in the existing types of wet presses which will become more apparent from the statement of the objects of this invention.

One of these objects is to provide an improved wet press of simple construction in which the solvent will be fed to the work surfaces almost modate the upper and lower bucks.

instantaneously so that the work surfaces may be made large to accommodate large objects or several small objects simultaneously.

A further object is to provide a wet press which lwill be more convenient and faster in loading *and unloading the work.

1 in the accompanying drawings, wherein.

Fig. 1 is a Vertical cross-section of a press embodying my invention shown in open position, with certain features omitted;

Fig. 2 is a diagrammatic section to an enlarged scale of certain portions of the press shown in Fig, 1, with the press still in open position;

Fig. 3 is a diagrammatic section of the press portions shown in Fig. 2,4with the press in closed position;

Fig. 4 is a transverse cross-section through the "pan of the press, when said pan is in the loading position;

Fig. 5 is a transverse cross-section through the pan shown in Fig. 4, when the same is in moistenu ing position;

Fig. 6 is a plan view of the press shown in Fig. 1 in open position;

Fig. 7 is a cross-section corresponding to Fig. 1, showing more fully the arrangement of the parts when the press is in the closed position; and

Fig. 8 is a diagram of the valving and piping for the press. i

Referring to the drawings, is a square tubular structural section and 2 is a structural stee1 channel; these parts are held together at the bottom by a pair of angles 3 to which are transversely fastened steel strips 4 which act as base for the machine.

Fastened to the tubular section l and the channel 2 is a pair of steel plates 5 as shown in VFigure 6, which are cut as shown in Figures 1 and 7 to form a C-shaped member and to accom- The plates 5 serve to hold the structural members I and 2 rigidly together.

Lips 5a are formed on the plates 5 as shown in Figure 6 by means of which the block 6 is attached to the C-shaped member formed by the plates 5. This block 6 is bored to receive a disc l which acts as a pressure distributor for transmitting the load to the upper platen or buck 8. For transmitting the pressure to the upper platen 3 8 through the distributor 1, a screw 9 is employed for which the block 5 is drilled and tapped.

The locknut i securely looks the screw ii in the position in which it has been set. It will be noticed that the end of screw 9 operates in a recess in the distributor i so as to allow small angular displacements of the upper platen 8.

The platen 8 itself is held upward against gravity by means of four bolts H which are fastened to the platen 5. through openings in the block 5 and co-act with the compression springs |2 and the nuts IS to support platen 8. upper platen 8 is mounted so as to have avnormal position making an angle of some 40 degrees or thereabouts with the horizontal. The mounting is flexible so as to permit small angular departures from this position about axes'lying in the platen as may be required in operation as a result of small inaccuracies in the construction, and at the same time allows only negligible angular movement about the axis perpendicular to the platen.

. A cover plate IE is cut out to receive the block 6 and is mounted on the platen 8 by means of the. screws and the compression springs ll which tend to force the cover plate I downward. The downwardinove'ment of plate L5 is limited by spacers, not shown in the drawings.

The rim of the cover plate E5 is cove-red with rubber or other fiexible material as shown at |8, the purpose of which is to form a seal, as will be describ'edfi A lower platen 20 is carried on a transverse bar 2| which in turn is fastened to a pair of arms 22 pivot'ed to the members 5 at 23. Mounted on the lower platen 22 is the pan 25, whichy is positioned horizontally in the open or loading position of the press as shown in Figure 1. This pan ihas two rearward extensions 24a (see Figure 6) the purpose of which is to receive the liquid when the press is in the pressing position.

The turning of the lower platenfrom the loading or open wetting position shown in Figure'1f and Figure 2 to' the closed pressing' position shown in Figures 3, 57 and '7), is obtained by r'o'- tating the arms 22 around the pivot 23 so as to bring the lower platen 20 from th'e horizontal wetting position shown in Figure 1' into the inclin'e'dl pres'singl position of parallelism with the upper Vplaten 8 shown in Figure 3. This rotation is effec'tedy by aconventional toggle` mechanism composed of the toggle member 25 andV 25' which is actuat'ed by means of a pneumatic cylinder 25 whosepiston ro`d 27 is pivoted at 28 to an extension 25a of the toggle member 25.

The two positions of the machine and the various parts thereof are shown most cl'early in Figures 1 and 7. The parts are preferably so de'- signed that 4pressures up to 40 or 50 lbs. per :square inch may be applied to the work being moistened.

The liquid with which the work is to be moistened is shown at 30, and is most clearly seen in Figures 2 and 3. When the pan is horizontal, as in Figure 1, thenliquid distributes itself over the lentireV bottom of the pan and thereby wets the padding 3|, as shown in Figures 2 and 3.

The padding itself is kept spaced from and above the bottom of the pan by means of a series of bars 32 shown most clearly in Figures 4 andV 5. This arrangement permits quick flow of the liquid under the padding so that the same can become These bolts pass In this way the station'aryl very quickly saturated. The padding itself may be fastened to a perforated metal sheet, not shown in the drawings, so as to distribute the pressure on the padding properly, as will be readily understood by those skilled in the art.

When the press passes from the loading position of Figure 1 to the Operating position of Figure 7, the liquid runs down into the extensions 2M. After the moistening operation is completed and the press is opened, the liquid immediately spreads itself over the pan again as shown, e. g. in Figures 4 and 2.

Additional liquid is fed into the pan through 'flerible pipingl shown at 33 in Figures 2 and 3,

which piping in turn is fed from a liquid level control valve of well known construction.

The system is not unduly sensitive to the liquid level so long as the liquid is high enough to wet the padding 3| in horizontal wetting position and so long as it is not too high to overflow the extensions or recepta'cles 24a in the inclined pressing position. H

Since the padding 3] may become sopping wet with the liquid, it is not desirable to lay the work directly on it, especially since I wish to 'allowconsiderable fiexibility in the liquid level so that the padding Bi may actually become submerged. Moreover, if the work were laid directly on the padding 3! when the press passes from the closed to the open position, the rapid flow of liquid would cause the Work to become 'sopping wet with the solvent-a condition which the press 'is expressedly designed to avoid.

For this reason; a worl-:holder is provided which ie entirely clear 'of the liquid when the press is in the loading position 'and which is p'ush'ed down into contact with the padding 3! when the press is closed. The upper or working surface of this workholder is' shown in Figure 6 and also in Fi'g'- ures 21- and 5. i

The w'orkholder 'comprises a closed broad loop of material like nylon having an upper reachv 35 and a lower reach (see Figure 4). The width of the loop is made as wide 'as the upper pla'ten 8 which detcrmines 'the maximum 'size 'or number of parts 'which can lbe handled in one operation.

The loop 35-;3 5a is held taut by means of ba'rs 36 threadin'g the loop 'a't its ends, which bars are carried on short slotted arms el, There is a pair of such arms 31 at 'each end of the pan 24, each pair being pivotally mounted on a rod 3B and urged away fromv leach other by the torsion 'spring's 33. It is these torsio'n Springs which keep the loop 35 taut and which allow the Vworkholder to "be depressed as required inugoing from 'the Vopen to the 'closed position of the press.

After w'ettirig of the padding'l, the work, e.'g. a collar shown lat llllis laidon the surface'of the worihomr ze. when the piaten's 'are brought together by rot'ati'ng the lowel` plate'n" from the loading. position shown in Figure l into the pressing `position shown in lFigure 7,v the upper 'fi'x'ed platen '8 pre'sses vagainst the work'holder135 `35a and forces it intov the position shown lin' Figure V5, therby 'pressing the work 'tt 'together with the workhoider sfasa "againstl the wetted padding l, the liquid passing into the work through the fabric loop 3-35- The pressure between 'the upper p'l'aten and the lower ``platen, which'deter- Inines the amount of liquid sque'ez'ed :out of the padding 3| 'and into the work, 'iV adjus'ted by means of the screw 9 which is locked 'in the fdesired position by means of the nut i'll.

It will 'be seen from Fizure's :3, 5, and 7 that when the machine is :in the 'Operating presing assae'ia l position the cover plate |5 acts as a closure with the help of the rubber lips |8 so that during the pressing operation there is no escape of vapors from the pan. When the press is opened there is some escape of vapors but the nylon workholder proposed by me has the advantage that it retains very little of the solvent after it and the work have been squeezed during the pressingr operation.

The angle of turning of the lower platen and `quantity of liquid are preferably chosen so that when the press is first being opened, the workholder 35 breaks contact with the upper face of padding 3! before the liquid reaches the padding, so that the workholder is not rewetted while the 'press is being opened. Furthermore, the workhowever, that other less volatile solvent mixtures -can be used very satisfactorily, thereby reducing the loss of solvent through evaporation and simultaneously reducing the hazards from the presence of such vapors in the atmosphere.

To minimize shock when the press is lowered from its inclined pressing position to its horizontal open position, a block of rubber may be provided as shown at 4 l. i

The compressed air valving and piping arrangement is shown in Figure 8. This arrangernent includes a pair of spaoed manually operated three-way valves shown at 42. Normally, these valves 42 shut off the air which isadmitted at 43 as shown in Figure 8. They are constructed so that if only one valve is open to the compressed air supply, the air will immediately ex'haust out of the other valve and the system will not operate.

iIt is necessary to operate both valves 42 in order to admit air to the piston-operated valve 44--44a. When both valves fi2 are open, air is admitted through the piston-operated Valve 44-4411 to the bottom of the cylinder 25, thereby pushing its piston upward.

Interposed between the pair of valves Z and the valve 'MI-44a is a two-way valve 45 which is inormally open, so as not to impede the fiow of air to the piston-operated valve fill-44a. When, ho'wever, the toggle reaches the extended position of Figure 7, the member 25 operates the valve i 45 as shown in Figure 7, thereby trapping the air between valve 45 and the piston-operated valve Hence, when the press has been closed the op- 42 and the press will stay closed. So long as air pressure is thus kept in the system, the press will remain in the closed position.

In case of emergency the pressure can be released by means of a two-way valve 46 which can be foot-operated or manually-operated as desired. For normal operation a needle valve is provided at 41 which allows air to leak at a controlled rate from the piston-operated valve 44. When the pressure in this valve is sufiiciently reduced, it operates to shut off the compressed air supply from the cylinder 26 and at the same time to open the cylinder 26 to the atmosphere.

A quick release valve, as is well known in the art, may be used to facilitate rapid opening of the press.

6 It has been found by experiments that it is url-li necessary to use a padding on the upper fixed platen 8. However, such padding may be used,

4 as is shown in dotted lines -at 5D.

It will be seen that the work is wetted from one side only unless the padding 5d is used. In the latter case, the padding 50 is kept moist by solvent pressed out of the padding 31. However, I have found that very adequate wetting is obtainable without padding 50.

The amount of moisture left in the work is determined by the pressure, which can be adjusted.

Inspection of the drawings shows how this invention accomplishes its obj ectives:

In the first place, the wetting of the padding takes place by flooding and is practically instantaneous; the only dependence on capillary action is in the direction of the thickness of the padding, and that path is so short that uniformity of wetting is almost instantaneously achieved. This overcomes one of the main drawbacks of the older types of wet presses and allows the working width to be increased to any desired extent. For example, the machine shown in the drawings is proportioned to accept three ordinary collartops or two one-piece collars for processing in a single operation. The result is a much higher output than the existing type presses can give.

In the second place, in my new press there is no need to insert the work through a narrow slot. The work carrier is readily accessible to the operator who can lay the work on quickly and easily without any inconvenence.

In the third place, the machine is of simple design and construction, leading to relatively low costs of manufacture and ease of maintenance.

What I claim is:

1. In a wet press of the character described the combination comprising a stationary support; a stationary inclined upper platen on said stationary support; a lower platen mounted on said stationary support turnable about a horizontal axis between a horizontal wetting position in which said turnably mounted lower platen is spaced from said stationary inclined upper platen and inclined pressing position in which said turnably mounted lower platen is positioned adjacent said stationary inclined upper platen; a vessel adapted to hold liquid and forming part of said lower platen turnably mounted on said stationary support; a padding mounted also on said turnably mounted lower platen turnably together with the same so as to be wetted by said liquid in said vessel when said turnably mounted vlower platen is in horizontal wetting position but to be out of contact with said liquid in said vessel when said turnably mounted lower platen is in inclined pressing position; and Operating means associated with said turnably mounted lower platen for tilting the same together with said vessel and padding from horizontal wetting position into inclined pressing position and back.

adapted to hold liquid ;and formingpartfoffsaid ;lowerplaten turnably mounted on'sai'd stationary support; a 'padding mountedalsoon said .turnably mounted lower platen turnably ;together said flat pan land padding from horizontal `wetutingiposition into inclined ,pressingposition.and

back.

,'3. In ya wet :press of the character desoribed `the combination comprising a "stationarysupport; va stationaryfincllned upper platen on said stationary support; a lower platen mountedon said stationary support turnablera'bout a lhorizzontal axis between a'horizontalwetting .position in`which said turnably mounted lower'platen is spaced from said stationary inclined upper platen and inclined pressing position in'which said turnably mounted'lower platenzis positioned-adjacent Vsaid stationary inclined upper platen; afiat pan `adapted to hold liquid and forming part of said .flower platen turnably mounted on said stationary support; a pa'dding' permanently arranged within said flat pan turnably together with .the same so as to be adapted to be lwetted by said liquid in said flat .pan when said'cturnably Vmounted .flower platen .is in horizontal wetting position 'but to be out of contact with said liquid in said flat pan when said turnablymounted'lower paten vis in inclined ;pressing position; vand operating means vvassociated with said turnably mounted lower platen for Vtilting'the same together with said flat pan and'padding' from-horizontal vwetvting position into inclined pressing position and back.

4. In a wet press of the Character v-desoribed Athe combination comprising a stationary support; a stationary inclined upper platenon said stationary support; a lower platen mounted on 'said stationary support turnable about a horizontalaxis'between a horizontal wetting position in which said turnably mounted lower platenis spaced from said stationary inclined upper platen and inclined pressing position in which` said turnably mounted lower platen is positioned adjacent said stationary inclined upper platen; a flat pan adapted to hold liquid and mounted on said turn- 'ably mounted lower. platen on the top face there- --of; a padding permanently mounted within said L at pan turnably together with the same and 'spaoed from the edges thereofso as to be adapted to be wetted by said' liquid in said'iiatpan when said turnably mounted lower platen is' in horizontal wetting position `but to'be out of' contact with said liquid in said fiat panxwhen said'turn- ;ably mounted lower platen is in'inolined pressing position; and Operating means associated with said turnably mounted lower platen for tiltingthe same together with said flat pan. and padding from horizontal wetting position .intoginciined .'pressing'position and back.

5.'In a wet press of the characterdeseribed the combination comprising a stationarysupport; a stationary inclined upper platen onzsaid "'stationary support; a ``lower platen .mountedson -said stationary support turnable 'about a. hori- "zontal axis between a horizontal wettingpos'ition in which said turnably mounted lower platen is i spaced from'- said stationaryinclned upperplaten and inclinedpressing position in which saidturnably mounted lower platen is positioned adjacent said stationary inclined upper platen; azvessl adapted to hold liquid and composed of a .wetting vessel portion land a storing vessel portion, said vessel mounted on said turnably mounted lower platen turnably together with the same -so that in horizontal wetting position of said turnably mounted platen at least said wetting vessel portion contains liquid and in inclined pressing position of said turnably mounted platen only said storing vessel portion containsliquid; apadding mounted within said wetting vessel turnably together with the same portion of said vesselso as to be adapted to be wetted by said liquid in said vessel when said turnab1y mounted lower platen `is in horizontal wetting position but to be out of contact with said liquid in said vessel 'when said turnably mounted lower platen is in inclined pressing position; and Operating means associated with said turnably mounted lower platen for tilting the same together with said vessel and padding from horizontal wetting position into inclined pressing position and back.

6. In a wet press of the Character described the combination comprising a stationary support; a station'ary inclined upper platen on said stationary support; a lower platen mounted on said stationary support turnable about a horizontal axis between a horizontal wetting' position in which said turnably mounted lower platen is spaced from said stationary inclined upper platen and inclined pressing position in which said turnably mounted lower platen is positionedfadjacent said stationary inclined upper platen; la fiat pan adapted to hold liquid and composed of a wetting pan portion and a storage pan portion, said fiat pan mounted on said turnably mounted lower platen turnably together with the same so that in horizontal wetting position of said turnably mounted platen at least said wetting pan portion contains liquid and in inclined pressing position of said turnably mounted platen only said storing pan portion contains liquid; a padding mounted within said wetting pan turnably together with the same portion of said pan so as to be wetted by said liquid in said flat pan when said turnably mounted lower platen is in horizontal wetting position, but being out of contact with said liquid in said flat pan when said turnably mounted lower platen is in inclined pressing position; and Operating means associated with said turnably mounted lower platen for tilting the same together with said pan and padding irom horizontal wetting position into inclined pressing position and back.

7. In a wet press of the Character described the combination comprising a stationary support; a stationary inclined upper platen on said stationary support; a lower platen, mounted on said stationary support turnable about a horizontal axis between a horizontal wetting position in which said turnably mounted lower platen is spaced from said stationary inclined upper platen and inclined pressing position in which said turnably mounted lower platen is positioned adjacent said stationary inclined upper platen; a flatpan having side walls and adapted to i.: old liquid, said flat panmounted on said turnably mounted lower platen extending parallel to the same; a padding mounted within said fiat pan so as to leave a free pan portion between itself and that side wall-of .the pan which is lowermost when said lower platen isin'inclined pressing position; and operating means associated with said ztu'rnably 9 mounted lower platen for tilting the same togetherwith said pan and padding from horizontal wetting position into inclined pressing position and back. i

8. In a wet pressof the Character described the combination comprising a stationary support; a stationary inclined upper platen on said stationary support; a flat pan having two opposite side walls and mounted on said stationary support turnable about a horizonta1 axis between a horizonta1 wetting position in which said fiat pan is spaced from said stationary inclined upper platen and inclined pressing position inv which said fiat pan is positioned adjacent said stationary inclined upper platen with one of saidiside walls of said pan positioned lower than the other; a padding mounted within said turnably Vmounted fiat pan turnably together with the same and spaced from the lower of said side walls of said pan; and Operating means associated with said turnably mounted fiat pan for tilting the same together with said padding from horizonta1 wetting position into inclined pressing position and back.

9. In a wet press of the character described the combination comprising a stationary support; a stationary inclined upper platen on said stationary support; a vessel adapted to hold liquid and mounted on said stationary support turnable about a horizonta1 laxis between i a horizonta1 wetting position in which said vessel is spaced from said stationary inclined upper platen and inclined pressing position in which said vessel is positioned adjacent said stationary inclined upper platen; a padding mounted within said turnably mounted vessel turnably together with the same so as to be wetted by said liquid in said Vessel when the same is in horizonta1 wetting position but to be out of contact with said liquid in said Vessel when the same is in inclined pressing position; and Operating means associated with said tnrnably mounted vessel together with said padding for tilting the same from horizonta1 wetting position into inclined pressing position and back.

10. In a wet press of the character descrired the combination comprising a stationary support; a stationary inclined upper platen on said stationary support; a fiat pan adapted to hold liquid and mornted on sa'd stationary support turnable about a horizonta1 axis between a horizonta1 wetting position in which said flat pan is spaced from said stationary inclined upper platen and inclined pressing position in which said fiat pan is positioned adjacent said stationary inclined upper platen; a padding m unted within said turnably mounted fiat pan turnably together with the same parallel. to the bottom wall of the same so as to be wetted by said liquid in said pan when the same is in horizonta1 wetting position, but to be out of contact with said liquid in said fiat pan when the same is in inclined pressing position; and Operating means associated with said turnably mounted fiat pan for tilting the same together with said padding about said horizonta1 axis from horizonta1 wetting position into inclined pressing position and back.

11. In a wet press of the character described the combination comprising a stationary inclined upper platen; a fiat pan adapted to hold liquid and mounted turnablv about a horizonta1 axis between horizonta1 wetting position soaced from said stationary inclined upper platen and inclined pressing position coacting with said sta- 10 tionary inclined upper platen; a padding mounted within said fiat pan parallel to the bottom wall of the same so as to be wetted by said liquid in said pan when the same is in horizonta1 wetting position, but to be out of contact with said liquid in.said fiat pan when the same is in inclined pressing position; a liquid permeable flat holding member 'arranged within said fiat pan parallel to said padding; resilient mounting means for said liquid permeable flat holding member resiliently holding` the same spaced lfrom said padding' but permitting movement of said holding member into contact with said padding when pressed against said stationary inclined upper platen; and means associated with saidflat pan' for tilting the same about said`horizontal axis fromjhorizontal wetting position into inclined pressing position and back. i

12. In a wet press of the character described the combination comprising a stationary support; a stationary inclined upper platen on said stationary support; a fiat pan adapted to hold liquid and mounted -on said stationary support turnable about a horizonta1 axis between a horizonta1 wetting position in which said flat pan is spaced from said stationary inclined upper platen and inclined pressing position in which said fiat pan is positioned adjacent said stationary inclined upper platen; a fiat support mounted within said fiat pan on the bottom wall of the same provided with openings for passage of liquid therethrough; a padding mounted within said turn-ably mounted fiat pan turnably together with the same on said fiat support parallel to said bottom wall so as to be wetted by said liquid in said pan when the same is in horizonta1 wetting position, but to be out of contact with said liquid in said fiat pan when the same is in inclined pressing position; and Operating means associated with said turnably mounted flat pan for tilting the same together with said padding about said horizonta1 axis from horizonta1 wetting position into inclined pressing position and back.

13. In a wet press of the character described the combination comprisng a stationary inclined upper platen; a flat pan adapted to hold liquid and mounted turnably about a horizonta1 axis between horizonta1 wetting position spaced from said stationary inclined upper platen and inclined pressing position coacting with said stationary inclined upper platen; a flat support mounted within said flat pan on the bottom wall of the same provided with openings for passage of liquid therethrough; a padding mounted within said fiat pan parallel to the bottom wall of the same so as to be wetted by said liquid in said pan when the same is in horizonta1 wetting position,

but to be out of contact with said liquid in said flat pan when the same is in inclind pressing position; a liquid permeable fiat holding member arranged within said fiat pan parallel to said padding; resilient mounting means for said. liquid permeable fiat holding member resiliently holding the same spaced from said padding but perinitting movement of said holding member into contact with said padding when pressed acainst said stationary inclined upper platen; and means associated with said fiat pan for tilting the same about said horizonta1 axis from horizonta1 wetting position into inclined pressing position and back.

14. In a wet press of the character described the combination comprising a stationary inclined upper platen; a fiat pan having side walls and fldapfiel to hold liquid, said flat pan mounted H.- turnably. about. aV horizon'tal, axsfi, between. hori-f. zontaliwettingIpositon spacedffrom .said Tstatiqnf a'ryir'iclned,V upper platen' andl inclinedfpres'sing; position coacting withrsaidfstationary. inclineld,

upperl platen; a fiati support mountdlwthin; saidf flatipan on the bottom walliofithe same provided;

with openingjfor passageoofiiquid'therethrough; ai padldngv mountedwithin said; flat` panv onJ Said` flat' support' so. asv to leave al free, panA poiztion' between, itself' and.` thats id`,wal1`v of' the, panv which is lowermost'when said'fiatpanflisi in4 in,- clned pressing position; a liquid;v permeab1e,flatf holding member: arrangedf within saidj fi'at pan? para11e1` to,` said' padding; resilent mounting,

means for said liquid' permeable fiat holding? membert resiliently holding, the Vsame spacedifrom'f said'l paddng-- but; permitting, movement" of' said; holding member into contact wthfsaid'pacldingv Mamma when. prestsevd. against said, stationary inclined upper.:` pl'ten'; and'I means, associated.u Withfi said flat. pan for ttiltingthesame about saici'horiz'onta',` axis fi'om horizontal' wetting` position'into inf` clinedpressingvposition. and back.,

BENJAMIN 'LIEBOWITZI RE-FERENCES CITED' 'heffollowing referencesare of re`cord=in the fiie ofi this patent:`

UNITED STATESPATENTS' Nmb'ex'* Name Date 3'] 5',911=`3` Boylef Jan;I 3'; 1888 4402,892` Foisom Nov. 18, 1890 2,`406 '1;2'89` Ritzerfld Jan; 12;v 193'7` 209036911 Liebowitz* Aug; 1.7', ,,193'T 21230,'621 Ioew` Feb; 4', 1941'

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