US1473791A - Apparatus fob - Google Patents

Description

Nov. 13 1923.

v C. H. MCCUTCHEON APPARATUS FOR FORMING CLAY POTS 1921 2 Sheets-Sheet 1 Filed Dec.

FIIEJW FREE Patented Nov. 13, 1923; srs a rnr crates.

CLAUDE H. MGCUTCHEON, OF KITTANNING, PENNSYLVANIA, ASSIGNOR TO PITTS- BURGH PLATE GLASS COMPANY, A CORPORATION OF PENNSYLVANIA.

APPARATUS FOR FORMING CLAY POTS Application filed December 1, 1821. Serial No. 519,266.

To all whom it vita/y concern: prises a fixed plunger for iorming the Be it known that I, CLAUDE H. Mointerior surface of the pot and a receptacle CUTGHEON, a citizen oil the United States, for forming or shaping the outside of the and a resident of Kittanning, in the county pot, which receptacle is movable relative of Armstrong and State of Pennsylvania, to the plunger in two directions, the bottom have made a new and useful invent-ion in of the receptacle and the side walls being Improvements in Apparatus for Forming movable vertically, while the side walls Clay Pots, of which the following is a which are insections, are movable horispecification. zonial'ly soas to app-roach the side walls of 10 The invention relates to apparatus for the plunger. In carrying out the process making of clay pots and particularly those the clay to be compacted is placed in the employed in making plate glass, which are receptacle beneath and around the plunger, of the largest size and present .the greatest after which the compacting action occurs, obstacles to production by any process this being accomplished by moving the 15 except the ordinary hand methods which bottom of the receptacle upward and at the are tedious and expensive. It has for its same time moving the sides of the receptacle main objects the provision of an improved laterally. In this way two compacting apparatus, (1) whereby pots of large size effects are secured, the clay beneath the may be made from ordinary'pot clay by a plunger being forced up against the end 20 pouring or molding action; (2) whereby and the clay at the sides 'of the plunger this result may be secured without the being forced against it laterally. The procnecessity of making the walls of the molding ess whereby these two compacting movereceptacle of plaster, and without the neces ments are. secured is most conveniently sity of using a' clay having a high mixture carried out by the apparatus illustrated, 25 degree of fluidity; (3).and whereby a uni but other equivalent forms of apparatus form and sufficient amount of compacting might be used to secure the same results. or pressing force is applied to the clay so It is more feasible tomake'the recxeptacle' that the resulting pot is without voids, is of collapsible and movable toward the plunger, uniform density and composition, and in maintaining the latter in fixed position, but 30 general has the physical characteristics the same result would be secured by a reverse necessary to give a length of service comrelative movement involving a movable parable to that of the hand made pot. One plunger with the parts thereof capable of type of construction for carrying out the expansion and contraction, or by dividing invention is illustrated in the accompanying these movements between the receptacle 35 drawings, wherein: and plunger, the only requirement in so far Figure 1 is a vertical section throu h the as the process is concerned being the vertical apparatus preferably employed. wit the movement of th approach between the sections constituting the side walls of the bottom of the receptacle and the plunger .mold or receptacle in open position. Fig. 2 and the lateral movement of approach befi is a section on the line II-II of Fig. 1. tweenthe side walls of the receptacle and Fig. 2 is an enlarged sectional detail, the peripheral wall of the plunger, these Figs. 3 and 4: are views similar to Figs. 1 two movements of approach preferably and 2 but with the-side sections of the mold occuring simultaneously, although this is in closed position. Fig. 5 is a vertical section not essential. t5 through the mold in a, plane different from Referring to the drawings, 1 is the core that of Fig. 3 to illustrate the locking keys which is carried by the spider 2 bolted at for securing the side sections of the mold to its ends to the four vertical T bars 3 3 3 3. the bottom and top or closure sections. The bottom 4 of the m receptacle is\ .Fig. 6 is a partial side elevation of the carried by a plunger 5 working in a 50 receptacle to show the locking keys in end cylinder 6'. Fluid pressure .is applied elevation. And Fig. 7 is an end view on a through the pipe 7 from the cylinder 8, in scale larger than that of the other figures, which works the plunger 9 operated from of one of the liners. the pump handle 10.

Briefly stated, the apparatus preferably The side walls of the receptacle comprise as employed in carrying out the process comthe four parts 11 11 11 11, such parts being shown in open position in Figs. 1 and 2,

the spaces between the opposing edges of the sections being covered by the metal liners 12 12 12 12. These metal liners are preferably of the tapering form illustrated in Fig. 7, the edges being made relatively thin and sharp so that they may slide over each Other when the side walls are collapsed. The side walls are made to move inward upon the upward movement of the bottom 4, such inward movement being secured by the use of the opposing sets of cam members 14, 15 and 16, 17, the cam members 14 and 16 being carried by the side sections of the mold and the cam members 15 and 17 being carried by the vertical T bars'3. There are two of the cam members 14 and two of the cam members 16 on each of the side sections 11 and one each of the cam members 15 and 17 on each of the T bars 3, the cam members 15 and 17 being long enough to engage two of the cam members 14 or 16, as indicated in Fig. 2. When the bottom of the receptacle is moved upward to the position indicated in Fig. 3, the side sections 11 arecammed in to the positions indicated in Figs. 3 and 4. i

A top or closure 18 is provided upon the upper edge of the side sections in order to prevent the upward escape of the claywhen compression is applied by the relative movements of the core and receptacle, such top or closure being made in four sections corresponding to the side sections 11. In order to secure the side members 11 slidably to the bottom 4 and top 18, the key construction shown in Figs. 5 and 6 is preferably employed. The keys 19 and 20 are dovetailed into the side sections and into the top and bottom members so that the side sections can go laterally or horizontally toward. and from thecore, but at the same time any vertical movement between the side sections and the top and bottom are prevented.

sections are moved out and thus prevent breakage incident to moving or handling while the clay is still soft, the hoops 21 extending. around the liners .are employed. These hoops lie in grooves in the walls of the side sections with their ends overlapping opposite the slots 22 provided in the side sections as shown in Fig. 2 Collars 23 fit around the overlapped ends and are provided with clamping screws 24.

I11 carrying out the operation the spider 2 with its plunger 1 are removed to permit the ready filling with clay of the lower portion of the receptacle, such clay being in a very plastic condition but not having the same degree of fluidity as that which is used in the ordinary pot pouring operation. The spider with 'ts core is then positioned and additional clay filled in around the sides In order to support the pot after the sidethereof. The closure sections v18 are then applied so that the parts occupy the position illustrated in Figs. 1 and 2. The hydraulic pump is now operated to apply pressure to the plunger 5, which causes the receptacle carried thereby to move upward, so that compacting pressure is simultaneously applied-between the bottom 4 of the receptacle and the bottom of the core and between the side walls 11 and the-side walls of the core, the side sections llbeing cammed inward as the receptacle moves upward. The top sections 18 prevent the escape of the clay upward from the-top of the mold, so that any desired degree of pressure may be applied to the clay, thus eliminating voids and bringing the pot to a. uniformly compacted condition. The ends of the hoops 21. are clamped together so that the pot will be supported by the liners 12 after the removal of the sections 11. After the pot has been formed and the clay allowed'to set, the bottom 4 is allowed to move back to the position indicated in Fig. 1, the core is removed, and theside sections 11 taken off. The pot, supported by the liners, may now be carried away for drying, seated upon the bottom 4, which bottom, with its plunger 5, is removed bodily from the apparatus upon a suitable truck. Or, if desired, the bottom 4 may be detached from the plunger 5 in order to move the pot, a new bottom member being secured in position upon the plunger for the succeeding operation.

If desired, this method of procedure may be somewhat modified and the filling may be carried out without removing the core. In filling in accordance with this method the top sections 18.would be drawn back and the clay necessary toform the complete pot filled in between the side walls of the receptacle and the core, tamping being ap plied to the extent necessary to cause the clay-to'fiow laterally and fill the space be' tween the bottom. of the core and-the bottom of the receptacle. After the filling operation the procedure followed would be the same as that above described. It is also feasible when the filling is done with the core 1 re-' moved, to put in the entire amount-of clay necessary to form the pot before putting the core in position. nov filling being done after the core .is in position.

What I claim is:

1. In combination in apparatus for forming clay pots, a base plate, a plurality of side wall members mounted slidably on the base plate for radial mo'vement, a downwardly extending core in the upper portion of the cavity formed by the side wall members, .a framework for holding the core against u ward movement, power means for moving t e base with the side wall members thereon upward. and cooperating means on the framework and side wall members for causing an inward movement of said members when such side members are moved upward by said base plate.

2. In combination in apparatus for formin clay pots, a .base plate, a plurality of si e wall members mounted slidably on the base plate for radial movement, a downwardly extending core in the upper portion of cavity formed by the side wall members, a framework for holding the core against upward movement, power means for moving the base with the side wall thereon upward, and cooperating means in the framework and side wall members for causing an inward movement of said members when such side wall members are moved upward by said.

in parts and collapsible radially, a core for shaping the interior of the pots, means for giving a relative vertical movement to the receptacle and core, means for forcing the parts comprising the side Walls of the receptacle inward, and a closure means secured upon the upper ends of said side walls with slide connections and fitting around the core.

4. In combination in apparatus for forming clay pots, a receptacle for shaping the exterior of the pots, having side walls made in sections and collapsible radially, liners inside the section bridgin the spaces between I the sections, releasab e securing means around the liners for holding them in position on the pot and supporting it after the sections are removed, a core for shaping the interior of the pots, and means for forcing the sections inward to compact the clay around the core.

In testimony whereof, I have hereunto subscribed my name this 7 day of November,

CLAUDE H. MccU'rcHEoa

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