USRE14262E - sheets - Google Patents

Description

1. H. RIVERS.

MACHINE FOR MOLDING AND DRYING PULP.

APPLICATION FILED Nov. 3o. |915.

Reissed Feb.20,1917. 14,262.

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A TTHNEYS l. H. RIVERS.

MACHINE FOR MOLDING AND DRYING PULP.

APPLICATION F|LED Nov. so. :915.

Reissued Feb. 20, 1917. 14,262.

5 SHEETS-SHEET 3.

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MACHlNE FOR MOLDING AND DRYING PULP.

APPLICATION FILED NOV. 30, I9I5.

14,262. 6 SHEETS-SHEET 4.

Reissued Feb. 20, 1917.

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APPLICATION min Nov. 30. lala.

Reissued- Feb. 20, 1917. v 14,262.

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MACHINE FOR MQLQNG AND DRYING PULP.

APPUCATIQN HLED NDV. 30. 1915.

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Reissued Feb. 20, 1917.

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INVENTUI? WIZ'NESSES A TTHNEYS 'UNITED sTATF-.s raTENT onirica JULIAN H. RIVERS, 0F TRENTON, NEW JERSEY, ASSIGNOR, BY MESNE ASSIGNMENTS,

TO UNIVERSAL FIBRE COMPANY, 0F NEW YORK, N. Y., A CORPORATION 0F DELA- WARE.

MACHINE FOR IIIOLDINGrA AND DRYING PULP.

Specification of Reissued Letters Patent. Reiss @(1 Feb, 20, 1917.

Original No. 1,161,160, dated November 23, 1915, 'Serial No. 582,735, led September 19, 1910. Application for reissue led November 30, 1915.

To all whom it may concern.'

Be it known that I, JULIAN H. RIVERS, a citizen of the United States, residing at Trenton, county of Mercer, State of 'New Jersey, have invented a new and useful Improvement in Machines for Molding and Drying Pulp, of which the followingl is a specification.

This invention relates to machines for molding;` and drying pulp, and has for its object to produce a machine whereby it is possible to mold and dry objects composed of pulp and other ingredients.

In a specific sense the presentl invention consists of an advanced improvement upon the apparatus described in Patent No. 804,432, issued to me November 14, 1905. The apparatus constituting the subject matter of the present invention is perfectly vadapted for use in practising the process described in my said patent, and also the improved process described in an application for patent filed by me July 26, 1909, Serlal No. 509,472. By use of the present improved machine, the process of said patent or of said application may be carried on with maximum efliciency and practically perfect articles may be formed.

Having these and other objects to be attained, a machine containing. an embodiment of my invention is illustrated in the accompanying drawings, in which Figure 1 is a side elevation of the complete machine. Fig. 2 is a detail sectional view illustrating the arrangement of the parts Whereby the bottom of the mold incasement is raised and lowered. Fig. 3 is a sectional view of the mold. Fig. 4 is a sectional view on the line 4-5 of Fig. 3 looking upwardly. Fig. 5 is a sectional view on thesame line looking downwardly. Fig. 6 v is an en-L .Phl'agm 1Sbe1ng of corrugated sheet metal Isfrged sectional view illustrating the construction-of the mold. Fig, 7' .is `a plan View of the complete machine.

Fig., 8 iS a central, vertical, sectional view of thegsnpf ply hopper and,the upper portion of receiving tank. 9 is an exterior side elevation of one .of the: sections of a mold for producing containers such as barrels and Serial No. 64,345.

other yessels. ig. 10 is an edge view partlally 1n section of the same part. Fig. 11

is an interior side elevation of the same part form temperature. A top plate 4 is attached to the upper end of the tank 2 and constitptes a closure for the tank. A hopper 5 isv provided with a tubular extension 6 which extends into an opening in the top plate 4. A valve 7 (Fig. 8) "is supported by a rod 8 swinging from the end of a lever 9. A weight or other actuating device 10 acts upon the lever 9 effectively to hold `the valve 7 in closed adjustment against a gasket or valve-seat 11 as shown in Fig. 8. The liquid supply pipe 12 opens into the tank 2 near its bottom and a pressure supply pipe 13 opens into said tank near the top thereof.

The bottom of the tank includes a ring or frame piece 14 having an internal flange 15. A bottom plate 16 is provided with an exterior flange which in its lowermost position shoulders upon the' fiange 15 and is supported thereby. yA' plate 17 is arranged upon the plate 16 and is rigidly secured thereto clamping onto a diaphragm or flexible partition 18, the outer edge of which is clamped between the ring 14' and the end of the tank 2. A space separates the upper,

vcircumferential portion of the 1)late 16 from permits'movement of the bottom plate 16 while maintaining a perfect seal or closure for'the bottom of the tank. It is preferred that the plate I7 shall slope` outwardly in all directions from its center as shown in Fig. 3.' A funnel-shaped outlet 19 extends through the plates 16 and 17 and continues passage for conducting the materials to be molded to the mold. The mold includes an outer shell or incasement composed of aA permit limited vertical movement of said rods. In the form shown the rods 22 have their upper ends in guides 22*l in rigid connection with the tank 2 or some part attached thereto, and their lower ends in guides 221 attached to a frame Other incasement sections 24 are hinged to the rods 22 by means of ribs or flanges 25 which are rigid with said sections 24. The adjacent ends of the ribs or flanges 25 support pins 26 upon one oi which hooks 2 7 are supported, said hooks being operable to engage with the pin 26 on the adjacent section thereby to latch with the mold sections in close relation as shown in Fig. 5. The mold shown in the drawings is of a design for forming containers of barrel shape and includes a series of vertical sections or staves 28, on the inner face of which are vertical channels 29 (Fig. 11). These channels form attenuated ribs or ridges. Holes 30 are formed through the staves 28 at close intervals and at their inner openings extend across the base of' those ribs which they intersect as shown in Fig. 11. In other words1 the holes are the same width as theribs forming the ribs which they intersect into series of projections. These holesl increase in size outwardly so that the moisture being ejected therethrough will meet with no obstruction in its egress. A section of perforated or reticulated material 31 covers the inner surface of each stave pressing against the attenuated edges of the ribs and projections thereof. The edges of the reticulated sections 31 extend outwardly against the edges of the staves 28 and are then bent obliquely toward each other as shown in Fig. 12. Each of the staves 28 has rigidl therewith .outward extensions or flanges 32 whereby the staves are connected with the `shell or inca- sement sections 20 and 24 and held in proper relation. The deflector plates 33 are mounted between the mold sections and the incasement 20-24 so that the outward flow of the liquid will be deflected. These deflector plates rest against projections 34 on the extensions 32 and arp pre-y vented from inward movement by intermediate projections 35 extending from the staves 28. (See Fig. 12)'. This completes the side walls of the mold. v

The top end of the mold constituting another section thereof is supported by the plate 16 constituting with the diaphragm and plate'17 the movable bottom wall of the 6 tank 2. In the under side of the plate -16 is a series of concentric grooves or channels 3G constituting air chambers which encircle the passage formed by the tank outlet 19. A thin metallic plate 37 closes these grooves or channels and is held in position by a frame or grid 38 against which rests plate 39, the construction of which is silnilar to that of the staves 28. Upon the inner surface of the plate 39 is a section 40 of reticulated material similar to the sections 31 so that the liquid within the mold may pass therethrough and thence into the chamber outside of the mold. From this chamber outlets 41 conduct a portion of the ejected liquid to any delivery point.

The bottom or opposite end of the mold constituting another section thereof includes a supporting frame 42 having a flange encircling the mold incasement 20-24 and holding said incasement closed when the mold is in use. A plate 43 is supported within the frame 42 and has a central open- 'ing 44 through which the liquid ejected from the mold passes to places lof discharge. A frame 45 rests upon the plate 43 which is similar to the plate 39. A section 47 of reticulated material is attached to the member 46 and extends under the lower ends of the staves 28. Below the plate- 43 deflector plates 48 are arranged and said plates serve to check and change the direction of flow of the liquid. Outlets 49 through the frame 42 permit outward flow of the liquid, but the capacity of said outlets is less than the capacity of the inlet 19 so that the mold and the chamber surrounding the mold will become filled with liquid during the formation of any article in the` mold. A hopper 50 is arranged to receive 'the liquid which is ejected through the bottom of the mold.- The outlet of said hopper is controlled by the valve 51 which may be operated in any suitable manner. In the embodiment shown thefvalve is mounted upon a rod 52 guided through the outlet opening of the discharge hopper 50 and resting upon the end of an operating lever 53. Said lever is actuated to idle position by a spring 54. Pressure upon the outer end ofthe lever 53 will raise the rod 52 and open the valve 5l permitting the liquid to discharge from the hopper.

I will now describe the operating mechanism whereby the mold is opened and closed.- The frame 42 rests upon supporting blocks 55 (Figs. 1 and 2) said blocks being mounted upon horizontal beams 56. The ends of the ybeams 56 rest upon adjustable wedge blocks 57 which extend through blocks 58 swinging from the lower ends of the supporting links 59 arranged at opposite sides of the machine.

By adjusting either one of the blocks 58 the j beams 56 may be raised or lowered as retion.' The upper ends of the connected by a rod 60. A rock shaft 62 exquired to arrange the parts in 1proper relanks 59 are tends across the top of the tank and arms 63 have their lower ends rigid with said shaft and are connected by a beam 61. By rocking the shaft 62 the-arms 63 may be moved to horizontal osition which will lowervthe links 59 and the mold and other parts supportedrthereby. For this purpose an operatin lever 64 is attached tothe shaft 62 and may e operated to rock said shaft electively topermit lthe links 59 and the partssupported thereby to move downwardly. In the position of the lever 64, shown in Figs. 1 and j `8', the links 59 are held locked in their highest adjustment thus. raising slightly the movable wall permitting its free action when under pressure and so closing the mold ready for use.` By raising the free end ofthe lever 64, the arms 63 wi be swun to horizontal positions and the llinks 59 an the parts supported thereby will be lowered. This downward movement of the links 59 carries also the beams 56 ,.and the mold which is supportprojections on'the blocks 55 and into holes 67 1n the frame part 42, thereby acting as guides to prevent lateral oscillation of all the moving'parts during their vertical movements. This downward mowement of the bottom frame 42 also carries the entire mold,

disengaging the mold incasement from its connection with the bottom of the supply tank, such engagement being shown at 68 in Figs. 3` and 6. Descent of the moldl is stopped by the ends of the rods 22 abutting against the bottoms of the guides22" which occurs just after the mold separates from the tank 2. The bottom frame 42 continues its downward movement until it is separated from the mold incasement and is stopped by the rods 66 which permit the said bottom to mold to move. The moldl may then be openedand the articles therein may be removed.

In operating the machine, the mold is held in closed position and supported againstvthe tank 2 as shown in 1 and 3 with the movable wall raised slightly above the supportl. The water'and suspended material, including pulp, and such other ingredients as may be desired, are admitted into the tank 2 through the hopper 5, preferably without pressure. A quantity of the liquid and suspended materials pass through the passage 19 into the mold and completely fill the mold. The liquid passes through the mold walls and completely7 fills the sur- ;rounding space between said mold and its lincasement, said liquid also passing through and their upper ends pivoted to the rod 60 ed thereon. Guide rods66 (Fig. 2), which are attached to the frame 23 extend through move farther than the rods 22 permit the the top andA bottom of the. mold. During this time the valve 51 is closed so ast-'0 retard the outward ow of the liquid ,which can esca e only 4through the passages 41 and 49 uring the time that `said valve is' closed. The combined capacity of the passages v41 and 49 is less than the .ca' acit of the mold Ainlet 19, so that themol an 'ineasement will be kept'vlled prior to the' application of the pressure mentioned below. This primary How of the liquidA to fill these s'paces deposits a relatively thin` layer of the pulp and other ingredients lagainst the entire lnner surface of the mold. After the primary layer has 'been formed in this vway, air or steam pressure may be' admitted into the tank 2 through the pipe 13 with such force and effect as tol drive the remaining liquid and suspended materials from the tank 2 into the mold, the liquid passing through the Walls of the mold while the suspended elements are firmlycompacted and felted into a hollow article, the exteriorv of which is defined by the interior surface oLthe mold.- About the time that the pressure is admitted into the tank 2, the valve 51 should be opened'so as to afford free `outlet for the ejected fluids. Should it be desirable the liquid and suspended elements in thel tank 2 may be maintained in agitation either prior to or during the admission of the pressure.` Said agitation may be effected by-the admission of additional liquid through the pipe 12 which opens into the tank 2 near-the bottom thereof. The pressure of the heated air or steam is maintained'after' the ejection of the liquid until the molded article has been properly dried, f after which the mold may be lowered by o eration of the lever 64 as previously descrl ed.

The pressure of the Huid within the chamber 2 is exerted downwardly upon the movable bottom wall thereof to cause said bottom to approach toward the lowermost position thereof.V The same pressure medium, entering the mold through'the passage 19, exerts an upward pressure upon the upper section of the mold. But owing to the, fact that the exposed area of the movable wall of the chamber is greater than that of the upper mold section, a differential pressure is exerted downwardly and the horizontal joints of the mold are thus maintained forced together. No matter what the shape of the mold may be, it is obvious that the exposed area of the movable wall must extend-beyond the projection, upon the plane o`f said wall, of any transverse section, when viewed as in Fig. 1, taken through any horizontal joint. In other words,-it is necessary that the force within the mold tending to move the diaphragm away from the mold, that is, upwardly in the construction illustra-ted, be opposed by a greater lforce within the chamber tending-to move the diaphragm toward the mold, that is,'downwardly in the specified.

construction illustrated so that, as a result,

:increased tightness of the various mold Joints 1s caused with increase .of pressure.

I 'am aware that there may' be modifications in the construction and arrangement of the parts embodying the present invention without departure and scope of the invention. I do not confine myself to specific features of construction or arrangement, but what Iv claim and desire to secure by Letters Patent is- 1. In a. machine of the character described, av tank arranged to' contain the materials to be compacted, a mold, an incasement around said mold, deflector plates between said mold and said incasement, an inlet passage from said tank into said mold, and an outlet passage from said incasement, substantially as 2. In a machine of the character described, a tank arranged to contain the materials to be compacted, a mold, an incasement around said mold, defiector plates between said mold and said incasement, an inlet passage for admitting materials to be compacted from said tank into said mold, an outlet passage from said incasement, and a valve control- .ling said outlet passage, substantially as specified. y

3, In a machine of the character described,

a tank for receiving the materials to be.

compacted, a mold, an` incasement around said mold, deflector plates between said mold and said incasement and out of contact with said mold, a passage for delivering materials from said tank into said mold, a hopper communicating with said incasement, an

outlet passage from said hopper, and a valve controlling said outlet, specified.

4. In a machine/of the character described, a tank, a mold, links supported by said tank, and a lever operable effectively to cause said links to move said mold to operative adjustment, substantially as described.

5. In a machine of the character described, the combination withva tank, a mold, and links .supporting said mold, of a lever for operating said links, and means operated by substantially as said lever for locking said mold, substantially as described.

6. In a machine of the character described, a mold, an incasement around said mold, and a deflector located between-said mold and said incasement, substantially as described.

7. In a machine of the character described, a tank, a frame, a mold supportedv by said frame, links supporting said frame, and a lever operable to move said frame and mold effectively to engage said mold with said tank, substantially as described.

. 8. .In a machine of the character described, a tank, a frame, a mold supported by said frame, devices supporting said frame and mold whereby said mold will be held in engagement with said tank, means for operating saidsupporting devices to permit sald mold to become disengaged from said tank, and means for disengaging said mold from said frame, substantially as described.

9. In a machine of the character described, a tank, a mold, a passage from said tank into said mold, a supply pipeleading into said tank, a pressure supply pipe leading intosaid tank, an incasemei-it around said mold, and outlet passages communicating with the interior of said incasement, substantially as described.

1 0. In a machine of the character d escribed, a mold,.an incasementv around sald mold, deilector plates between said moldandv incasement, va supply passage openinginto said mold, and outlet passages from said in' easement of smaller capacity than saidsupply passage, substantially as described.`

11. In a machine of the character .de-

. scribed, a tank arranged to receive the materials to b e compacted, a mold outside of said tank,f'""a 'passage for delivering materials v from said tank into said mold, an incasement Vinclosing said mold, discharge passages leading from said-incasement, a hopper supporting said mold and incasement and arranged to receive materials .discharged therefrom,

means for moving said hopper to adjust said mold in operative or in inoperative position, a discharge outlet from said hop,- per, and means for .varying the speed of discharge through said outlet, substantially as specified.

13. In a machine of the character described, a tank arranged to receive the materials to be compacted, a mold outside of said tank, a shaft mounted in bearings on said tank, links, a rod connecting said links, elements attached to said shaft and pivoted to said rod, a support for said mold carried by said links, a lever for operating said links to raise and lower said mold and a passage from said tank into said mold, substantially as specified.

14. In a machine of the character described, -a tank arranged to receive materials to be compacted, a mold, a series of pivoted parts supporting said mold, means for lock- `ing mold in closed adjustment, :links 'supporting said` mold, means for operating said links to move said mold into position to receive materials from said tank, and a pas- Sage for deliverin materials from saidtank .into said mold, su stantially as specified.

15. In `a machine of the `character described, a mold, a series of hinged sections forming an incasement around said mold, deflectors located between said sections and said mold, and means for lookin said sections to hold the mold closed, su stantially as specified. Y

16. In a machine of the character described, a mold, a series of hinged parts constitutin an incasement around said mold, means or locking said incasement in closed adjustment, deflectors located between said mold and said incasement, anda valve controlled outlet from said mold, substantially as specified.

17. In a machine of the character described, a tank arranged to contain materials to be "compacted, a mold top attached to said tank, a frame, a mold side wall supported by said frame, lmks supportingsaid frame, a lever operable to move said frame and mold side wall effectively to engage said mold side wall a inst said mold top, and a passage for-delivering the materials from sald tank into said mold, substantially as specified.

18. In a machine of thev character described, a tank arranged to contain the materials to be compacted, a frame, an annular mold supported by said frame, an incasement inclosing said mold, links supporting said frame, an outlet from said mold, meansl for controlling said outlet, and a lever operable tol move said frame and mold effectively to engage said mold with said tank, substantially as speciiied.

19. In a machlne of the character described, a tank arranged to receive the materials to be compacted, an annular mold, an incasement, inclosing said mold, links supporting said mold, a passage from said tank extending downwardly into said annular mold, a hopper arranged to receive the material discharged from said mold, 'an outlet from saidV hopper, a valve controlling said outlet, means foropenin said valve, and means for operatin said llnks to disengage said mold from said tank, substantially as specified.

20. In a machine of the character de- 4 vscribed, a tank arranged to receive the majterial to be compacted, an annular mold, a

continuous passage from said tank into vsaid mold, means for admitting fluid pressure into said tank and mold, and means for movin said mold away from said tank, substantiily as specified. l

21. In a' machine of the character described, a tank arranged to receive the material to be compacted, an annular series of mold sections, an incasement for the mold formed by said sections, releasable connections holding said incasement closed, means for locking said mold and incasement in position to receive materials from saidtank, and a continuous passage leading from said tank into said mold, substantially asspecilied.

22. In a machine of4 the character described, a tank arranged to receive thematerial to be compacteda support, an annular series of mold sections carried by said support, an incasement for the mold formed by said sections, releasable connections'for holding said incasement and mold closed, means for locking said incasement and mold in position to receive materials from said tank, a pass e extending into said lnold from said taii,

23. In a' machine of the character described, a' tank arranged to receive the material to be' compacted, a series of mold wall-v sections, an incasementv for inclosingthe mold formed by said wall-sections, means for lockingr said mold and incasement in position to receive materials from said tank, a lever for releasing said mold and incasement, a .discharge outlet from said mold and incasement, and meansfor varying the speed of ilow through said outlet, substantially asspecified.

' 24. In a machlne of the character described, a tank arranged to receive the material to be compacted, a heating jacket inclosing said tank, a support, a series of mold wall-sections carried by said support,

an incasement for inclosing the mold formed by said wall-sections,releasable means for holding said incasement closed, means for locking said mold and incasement in position to receive materials from said tank, a passage leading from said tank into said mold, a. discharge outlet from said mold and incasement, and means for regulating the quantity of discharge through said outlet, substantially as specified.

25. In a machine of the character described, a tank arranged to receive the materials to be compacted, a mold arranged below said tank, a diaphragm partition between said tank and said mold, a passage for delivering material from said tank to said mold, an incasement inclosing said mold, discharge passages leading from said incasement, and a chamber arranged below said mold and said incasement for receiving the materials discharged therefrom,'substan tially as specified. Y

26. In a machine of the character described, a tank arranged to receive materials to be compacted, a flexible closure for -one end of said tank comprising a pair of clamping plates and a flexible sheet arand a lever operable to release. said mold and incasement, `substan- -tially as specified.

ranged to seal one cud of the tank, a mold arranged below said tank, a passage from said tank to said mold supported by said closure, and4 discharge passages leading from said mold, substantially as specified.vv

27. In a machine of the character de- 4 scribed, a .tank for .receiving materia-ls to be compacted, a mold supported below said tank, a iexible partition between said mold and said tank, and a passage through said' partition, substantially as specified.

28. In a machine of the character de-` scribed, a container wall and topaxbottom for the container, asupport on which said bottom is movable with respect to said con- `tainer wall, means preventing leakage of Vthe materials between said wall and saidv scribed, a Acontainer comprising a wall, a

bottom, means for sup-porting said 'bottom whereby said bottom .is movable withy respect to said wall, means preventing leakage of the materials between vsaid wall and said movable bottom, a mold, and a passage leading from said container into said mold through said movable bottom, substantially as described.

30. In a machine of the character described, the combination with a container and a mold, of a movable partition between said container and said mold, -means for supporting said partition whereby movement thereof with respect to said container is permitted, and a passage through said movable partition from said mold, substantially as described.

31. In a machine of the character described, the combination with a container, and a mold section supported by said container, of mold walls, a movable support on which said mold walls are mounted, means for moving said mold walls to and from said mold section, and a passage for conducting materials from said container into the mold, substantially as described.

32. In a machine of the character' described, a tank arranged to receive the Inaterials to be compacted, a mold supported below said tank, a flexible partition with passage therethrough between said tank and said mold, which flexible partition has an area greater than the area of'said mold, producing a dierential pressure, said. pressure.

causing increased tightness of joints with increase of pressure. l

33. In a machine of the character del scribed, acontainer, side and end walls forming a jointed mold towithstand internal pressure, a paage for admittingdpressure from said Acontainer linto said mo and `a top for said moldsupported by saidfbot- .tom wall, and means whereby increase of vnessl of the joint between the top 4of said ported by said bottom wall, a mold supportsaid moldvv against said top mold wall, a passage through said bottom of said tank and exerting a force tending to separate the j pressure exerting a force tending tosepa- 13 means. whereby pressure in said container increases tightness of the joints between ceri tain of said walls of saidmold.

34. In a machine of the character described, a tank arranged to receive materials to be compacted, 'a movable bottomwall for said tank, a'mold supported below said tank, a passage for conducting materials and the pressing fluid from said tank .into said mold,

pressure in said tank will increase the tightmold and the remaining portions thereof.

35.-'In a machine of the character described, a tank arranged to receive the materials to be compacted, a movable bottom wall for. said tank, a top mold wall suped below said tank, means for. supporting through said top mold wall'forl conducting the materials and the pressure from said tank into said mold, and a passagev for admitting pressure into said tank.

'36. In a machine .of the character described, a tank arranged to receive the materials to be compacted, means for admitting pressure into said tank to force the materials therefrom, a mold supportedbelow said tank for receiving the materials forced from said tank, a movable partition between saidtank and said mold having a passage for admitting the materials from said tank to said mold, and a support upon which said movable partition is joined with increased tightness in proportion to the increase of pressure within said tank.

37. In an apparatus of the kind described, a hollow mold comprising relatively movable jointed portions, means for admitting duid pressure into said mold, said pressure jointed portions, and means for applying a greater force upon the exterior of said mold, i whereby the internal pressure is over-balanced and thel jointed portions are maintained forced together.

38. In an apparatus of the kind described, a hollow mold comprising relatively movable jointed portions, means for admitting Huid under pressure into said mold, said pressure exerting a force tending to separate the jointed portions, and means for applying by saidfluid under pressure a greater force upon the exterior of said mold, whereby an increase of said pressure increases the force by which said jointed portions are held together.

39. In an apparatus of the kind described, a hollow mold comprising relatively movable jointed-portions, means for admittin fluid under pressure into said mold, sai

rate the jointed portions, a chamber in communica-tion with said mold 'and having a wall movable relatively to the other Walls thereof, said movable wall being connected with one of said mold portions, means for admitting said iuid under pressure into said chamber to force the jointed mold portions together, the force thus applied being greater than the internal force tending to move the jointed mold portions apart.

In testimony whereof I have hereunto set my hand.

JULIAN H, RIVERS.

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