US112495A - Improvement in pipe-molding machines - Google Patents

Description

. `,Toaltwliom:tf'magjconceptie; Beit knownthat LGEQRGE RICHARDSON of `Wisconsin, haveinvented certain Improve-` nhereby'declare that the following is a full,

`loeinghad to thel annexed drawings, making .i Figure `1` represents, a: perspective view of P myimprovedmachine. Fig.'2 is a vertical .e longitudinal section thereof. e, Figs. 8 to 9 rep- `resent views of `various parts` of the machine in the designation of identical parts.

molding pipes and pipe-couplings from clay or other 'plastic substances; `and my improvementjconsists `in the construction and combimore specifically pointed out in the following To enable those skilled in the art to make y scribeits construction" and operation.`

` mounted upon a substantial table, A,provided with a metallic plate, U, at the pointiwhere `the case `ormoldil is to be placed upon it.

i. core O snuglyiits, and `anaperture is also u formed in the top of the table, to admit ofthe passagelof the said core through it in its vere i i The case or moldB` is cylindrical or of other form upon its interior surface, to correspond formed, and may be'of any suitable length. "The mold illustratedin Fig. 3 is used when upon one side, such base being formed in the "l chamber X, there shown. The mold consists e `7 GEORGE 1 eIcHARDsoN, 0F

MILWAUKEE, WISCONSIN.

` lMPReofvEMENriN PIPE-Molema MACHINES.

Speciiication forming part of Letters Patent N 0. {1%,495 dated March 7,1871.

ofthe city and county ofMilwaukee andState ments in Pipei-lllolding:` Machines; andI do clear, andexact description thereof, reference part'o'f this specification, lin which-- in detail: Fig. 10 shows a modification of the means for operating the central cord. .1

The same letters are` usedin all the figures This invention `relates to a machine for nation of various partsthereof, which will be description andclaims. i

and use my'invention, I will proceed'to de- The various parts of the apparatus are This plate has a central opening, in which the tical movements.

in reverse to the exterior of the pipes" to be` the pipesa're formed with a rectangular base of two sections hinged together, so th at it may plate Uin such manner,and are of such outter. `Thesections are further held in a closed x position by a bolt, W, passing through eyes on the sections.

To the lower end of the central core a rack, F, is `secured in a vertical position to .mesh into and be driven by a pinion, G. `This pinion is keyed to a shaft, H, to which the power maybe `applied directly; but as it is located necessarily some distancebelow the top of the table it is generally preferred toV drive from a counter-shaft, M, arranged upon the table, the motion of which is transferred to the shaft H by intermediate gearing, or by `pulleys and belts or chains, as shown clearly in Fig. 1. The back of the rack slides in a guide, N', and it is held together with the core in its highest position by a sliding bolt, N, which moves in an aperture in the slide, and enters a hole in the back of the rack. The bolt N is operated by a lever, O, fulcrumed at O2, and extending up through the top of the table. Instead ot' the rack F, the lower end of the core may carry a straight bar, as shown in Fig. 19, and be operated by means of a cord or chain, one end of which is fastened to the lower end of the bar, and which, after being wound'several times around the shaft H, is fastened with its other end to the upper end of the bar. By operating the shaft in one direction or the other the core can be raised or lowered.

The concentricity of the central core C is preserved `by a disk, T, snugly fitting its bore, and having spider1egs T', which, passing through notches in the upper end of the core, hook with their bentdown ends over the shell of the mold.

The pipes which are intended to be molded in this mold are of the construction described in my Letters Patent of September 6, 1870. The annular recesses in the couplings for these pipes are formed by placing a ring, D, with an annular shoulder in the bottom of mold. After the required amount of cement or other earthy matter has been properly tamped, the ring S is slipped over the core--the spider T T being removedto form the recess inthe upper end 5 or the ring E may be used for this purpose, if desired. In order to form lateral openings in the pipes or couplings for the attachment of branches, a core, P or Q, may be which said core R projects sufficiently to moldl a collar around it by hand. This core' R is either screw-threaded,as shown in Fig. 6, or it may have a plain cylindrical surface, to form either'a screw-threaded or plain opening. To form a branch opening extending fromthe pipe at an angle other than a right angle,.the branchy core is made to stand at thel required angle to the central core, as shown, for instance, in Fig. 7

I am aware that branch openings have #been formed in' pipes-of this class by means of lateral c0res;but in every instance these cores were inserted through an opening inthe-side of the mold, so that it was necessary to use=a different mold for every changein the position of the branch. This difficulty isfovercome by using lateral cores'inserted from the top of the mold, as hereinbefore described.

1n molding straight pipes, a ring, Y, is placed in the bottom of the mold to support thepipe in being removed from the mold.

After a pipe or coupling has been molded 'in\ the mannerK set forth,tl1e;central core is withdrawn from it, the hinged plates U thrown back, and the mold opened and removed. The pipe isthen liftedfromthe table resting upon the ring Y, and placed in a kiln to be burned.

What I claim asl my invention, and desire to secure by Letters Patent, is-

1. In combination with the central core C, bar F, and guide N', they bolt N andv lever O, substantially as-Iset forth.

2. The arrangement withl referenceto each other of the mold B, central core C, and lat` eral' shoulderedcores P Q, substantially as and for the lpurpose set forth.

3. The eorevR, for the purpose of forming a shoulder onthe outsidel of the pipe or coupling, around branch openings therein, when arranged and operating substantially as set forth.

GEORGE RICHARDSON.

Witnesses:

J. B. SMITH, W. M. HoRNoR.

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