US201907A - Improvement in machines for forming pottery-ware - Google Patents

Description

2 Sheets-Sheetl G BRBITSCHWERTH & J. B. HUGHES. Machine for Forming PotteryWare.

No. 201,901. Patented April 2, I878.

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N. FEI'ERS, FHOTO-LITHOGRAPNER WASHXNGTDN. D C.

2 Sheets-Sheet 2. C. BREITSGHWERTH & J. B HUG-HE S Machine 01 Forming Pbttery'W aJre-L 'No 203907. Patented April 2, 1878.

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",PETERS. PHOTO-LITNOGRAPNER, WASHKNGTON D C 'UNITED STATES PATENT OFFICE.

CONRAD BREITSOHWERTH, OF SYRACUSE, AND JOHN B. HUGHES OF AUBURN, NEW YORK.

IMPROVEMENT lN MACHINES FOR FORMING POTTERY-WARE.

Specification forming part of Letters Patent No. 201,907, dated April 2, 1878 application filed February 19, 1878; a

To all whom it may concern:

Be it known that we, CONRAD Bann- SGHWERTH, of the city of Syracuse, State of New York, and JOHN B. HUGHES, of the city of Auburn, State aforesaid, have invented new and useful Improvements in Machines for Forming Pottery-Ware, of which the following, taken in connection with the accompany- 1ijng drawing, is afull, clear, and exact descrip- This invention has reference to that class of machines which form flower-pots and other similar pottery-ware by a male or core mold entering a female mold containing the tempered clay; and it consists in an improved construction, combination, and arrangement of the integral parts of the machine, wherby its operation is materially facilitated and expedited, and a better quality of ware is produced.

The invention is clearly illustrated in the accompanying drawings, wherein- Figure 1 is a side view ofour improved machine in its dormant position; Fig. 2, the same in itsoperative'position; Fig. 3, a front view; Fig. 4, a plan view; and Fig. 5, an enlarged Vertical section of the mold and the devices connected therewith, illustrating more fully the construction and operation of our improvements. e

Similar letters of reference indicate corresponding parts.

A is a frame, of wood or iron, and consisting of a post rigidly secured in a perpendicular position, and having extending therefrom horizontal arms, by which it supports the ma chine. B is a platform or table, mounted on the end of a post, 0, arranged to slide vertically in guides D, which are permanently attached to arms extended from the uprightpost of the frame A. c is a rack attached to the rear of the post 0, and d a pinion meshin g in said rack, and mounted on a shaft which is journaled on the guide D, and on its end provided with a lever, l, by means of which the pinion is rotated, and thus the platform B elevated and lowered, for the purpose hereinafter specified. To the top of the platform B is fitted the bed-plate a, pivoted thereto at one corner, as indicated at b, Fig. 4, or at such relative position as to allow the bed-plateto be swung horizontally off the table B, and en tirely from under the plunger or core-mold E, as illustrated in Figs. 3 and 4 of the drawing. To the bed-plate a is secured the female mold F, and,when brought into its proper position upon the table B, brings with it the said mold directly under the core-mold E, and in a true perpendicular line therewith.

The core-mold is rigidly secured to the upper horizontal arm of the frame A, and at its upper extremity provided with a horizontal circumferential flange, e. .Underneath this flange is arranged an annular plate, f, fitted movably on the core-mold, and supported by studs 9 g, passing through the flange e of the coremold, and having a spiral spring, 8, interposed between a head on its upper end and the flange e aforesaid. The plate f is provided with two projections or arms, 71. h, extended radially therefrom in opposite directions. To the bed-plate a are attachedtwo vertical limbs, '6 z, arranged with one of their faces, respectively, in a perpendicular line with one edge of the arms h h. To the same face of the limbs i, near the bottom thereof, are attached springs k, extending upward, and provided at their upper end with a hook or catch, having a beveled top surface, and held yieldingly against the limbs i. V

m is a rubber or other elastic facing secured to the under side of plate f, and either provided with concavity in its bottom face, or sufficiently thin to allow it to be pressed into a circumferential cavity in the bottom of plate f. The top edge of the female mold F is sharpened sufficiently to allow it to cut the surplus material, after the pot is formed, clean from around its top.

in is a loose sleeve fitted to the interior of the female mold F; o, the follower, fitted to the bottom of the aforesaid mold, and attached to the end of the piston 11, which is extended down through the bottom of the mold F, and through the bed-plate a and table B, and provided at its lower extremity with a suitable handle, for forcing the follower upward by hand.

The follower and upper extremity of the piston are provided with a central cavity, a,

extending longitudinally into the latter. Into this cavity is fitted the punch w, which is caused to project above the top of the follower by a spring of suflicient tension to force it through the clay and form the usual aperture in thebottom of flower-pots. By connecting the. punch 10 to the follower and giving it sufli cient length to allow it to follow the receding mold a sufficient distance to cause it to project above the bottom of the pot formed, the aperture required in said bottom is invariably and completely made.

We are aware that similar punches have heretofore been connected with the core-mold,

but experience has taught us that apunch thus arranged carries with it in its descent more or less clay on its end and presses the same against the follower, and thus either leaves a disk of clay over the hole .in the pot or forms the same-roughly and very imperfect. It is therefore the combination and arrangement, with the follower, of the punch, in the manner described, which weclaim as our improvement. r

00 represents a catch for retaining the bedplate in its proper position on the-table B, and y a handle by which to move the bed-plate.

To demonstrate the object of. the peculiar construction and arrangement of the devices described, we will now describe the operation of same: .First, the female mold F is brought from under the malemold .by swinging the bed-plate aupon its pivot b, until carried into the position shown in Figs. 3 and 4. ofthe drawing, thus giving free access to the mold F. The clay, previously tempered and properly prepared, is placed into the female mold, and the bed-plate thence swung onto the table B, to bring the female mold directly under the male, or core mold, the catch as holding it in that position. By bearing upon the lever l, the table, with bed-piece and female mold, is elevated, and the coreniold forced into the clay placed into the female mold sufficiently to press the clay uniformly andcompactly into the space between the respective molds. The surplus material which escapes at the top of the mold is cut off by the beveled edge of the female mold. The rubber facing m protects the edge of said mold, and prevents undue transverse strain in case the bed plate should be held out of a true horizontal position; and, furthermore, the said elastic facing, by itscircumferential concavity, forms a rounded top edge on the pot pressed.

The greatest difficulties encountered in most of machines consisted in the removal from the mold the .pot after it was formed. Forzthe perfect and expeditious accomplishment. of this we have devised very simple and efficient means. These consist, essentially, of the plate f, supported yieldin gly in its elevated position, and allowed to be forced downward synchronously with the receding of the female mold 'sufficientlyto free the formed pot from the for the purpose of facilitating the removal of same from the machine.

. Having thus described our improvements, what we claim as new, and desireto secure by Letters Patent, isa r l. The combination andarrangement of the stationary core-mold E, table B,provided with means for elevating and lowering, and the bed-plate at, having attached thereto the female mold F, and being pivoted eccentric to the table B, substantially as described and shown, for the purpose set forth. i i V i T 2.. Thecombination and arrangement of the stationary core-mold E, provided with flange e, the annular plate f, connected with flanges by studs g and springs s, and projections h I1, the bed-plate 41, provided with means forelevating and. lowering it, and withverticallimbs i "5, having springs 70, with catch 11, all constructed and arranged to operate substantially in the manner and for the purpose specified.

3. The core-mold E,-provided with flange e, annular plate f, held yieldingly underneath flange e, and provided in its under side with a circumferential concave elastic facing, m, and the female mold F, having a beveled top edge, all constructed and combined as de-* scribed and shown, forthe purpose set forth. .4. The punch w, when connected with the follower, as described, forthepurpose specified 5. In combination with the female moldF, the sleeve n, as and for the purpose set forth.

In testimony whereof we have hereunto set our hands this 14th day of February, 1878.

Witnesses E. LAASS, v H. HILL.

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