US847454A - Molding-machine. - Google Patents

Description

PATENTED MAIL/19', 1907.

N. BALDWIN.

MOLDING MACHINE.

APPLICATION FILED JAN. 8, 1907.

'Michigan, have invented certain new and formin UNITED STATES ATENT OFFICE.

MOLDING-MACHINE.

, Specification of Letters Patent.

Patented March 19, 1907.

Application filed January 8,1907. Serial No. 351,377,

To all. whom, it may concern: i

Be it known that I, NEWTON BALDWIN, a citizen of the United States, residing at Cold- 1 water, in the county of Branch and State of useful Improvements in Molding llrlachines, of which the following is a specification.

My invention relates to machines for molding plastic or earthenware pipes, tiles, blocks,&c. of the class shown and described in certain Iietters Patent granted to me on December 18, .1906, No. 838,935. In said patent the outer and inner forms are spaced apart by means of a device having'a number of arms that seat between the forms while the mold is being filled and which are pulled out with a tamping or churning motion after the mold has been filled.

- The invention hereinafter described contemplates the adaptation of my invention to use in the molding of pipes, tiles, blocks, &c., having a strengthening-web of metal to reinforce the article, and to that end consists in each of the spacin -arms of two paralle prongs, between whic the strengthenip -web is seated when assembling the mo a The construction and operation of my invention will be described in detail hereinafter and illustrated in the accompanying draws, in W l110l1- igure l is a central vertical sectional view of my improved mold in an assembled position, showing a strengthening-web of wires screen fabric'in position; and Fig. 2, a horizontal sectional view. 1

In the drawings similar reference characters indicate corresponding parts throughout both views.

A indicates the outer form or casing, and B the inner form or core of the mold, both of which are made 'of sheet metal preferably, though for the purposes of my improvement any form of casing and core may be used. C represents a funnel removably and replaceably mounted on casing A, having, a depending flange c to fit the outside 0 the upper edge of the casing and clips D to seat on top of the casing.

The 's acing device consists of crossed arms E, raving two arallel de ending vertical arms F at the en s of each of said crossed arms E, said vertical armsbeing spaced apart slightly to receive a length of wire fabric G or other reinforcing material to be molded into the pipe or tile.

H indicates an inverted-com shaped hood secured to crossed arms E to cover the coreB while the mold is being iilled, and I a handle secured to said arms E by means of a rod J.

In using my improved mold after inserting the reinforcing material G between the arms F and installing said arms in position between casing A and core B the plastic material is poured into the mold. After filling the mold the arms F are withdrawn with a tamping motion to settle the plastic material in position and leaving the reinforcing material G in the molded pipe or tile. After the article has partially or completely dried the core and casing are removed.

It will be understood that a number of cores and cylinders may be provided, but that only one funnel and spacing device would be required for each operator. It will also be understood that m. device may be applied to the molding of other fornis of plastic products, such as building-blocks, by altering the relative positions of the spacingarms to suit the work to be accomplished.

' Having thus described my invention, what I claim is 1. In a molding apparatus for plastic products, mechanism for holding the parts of the mold in position and provided with means for holding reinforcing material in the mold while being filled, said'mechanism being'removable from the mold and the reinforcing material, substantially as shown and described.

2. In an apparatus for molding hollow plastic articles, a casing and a core, and a device for spacing said casing and core apart and for supporting reinforcing material in the mold while being filled, substantially as shown and described.

3. In a molding apparatus, a casing and a core, and a device for spacing-said casing and core apart consisting of a plurality of twoforked arms adapted to receive reinforcing material therebetween and hold it in the mold, substantially as shown and described.

4. In a molding apparatus, a casing and a core, and a device for spacing said caslng and core apart consisting of a pluralityof arms arranged in pairs and spaced apartto receive Y reinforcing material therebetween and hold it in the mold, said arms approximating in length the length of the casing and core, substantially as shown and described.

5. In a molding apparatus, outer and inner orfiis, and a device for spacing said outer and inner forms apart comprising crossed arms, and two vertical arms depending from arms to seat on top of the inner form, and the ends of each crossed arm and spaced two vertical arms depending from the ends of I apart to receive reinforcing material therebesaid crossed arms and spaced apart to receive tween and hold it in the mold, said arms apreinforcing material therebetween and hold proximating in length the length of the cylit in the mold, said arms approximating in inders aforesaid, substantially as shown and length the length of the outer and inner described. forms, substantially as shown and described. In testimony whereof I hereto affix my sig- 6. In a molding ap aratus, collapsible nature in the presence of two Witnesses. outer and inner cylin ers made of sheet NEWTON BALDWIN. metal, a funnel secured on the outer cylinder, i and a spacing device consisting of crossed I arms, a conical hood secured to said crossed Witnesses: v

ELMER E; PALMER, AG ES GIBSON.

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