Nova Patents
US2981997A

Flagstone mold

Abstract

This record has no abstract on file.

US2981997A, drawing sheet 1
Sheet 1 of 2

Term

Term ended

Expired 2 May 1978, 48.4 years ago.

  1. Priority and filed
  2. Granted
  3. Expired
  4. Today

2 claims: 2 independent, 0 dependent

  1. 1
    What is claimed as new is:35 A mold for artificial flagstones of poured concrete comprising a flexible strip of one of the elastomers adapted to rest edgewise on a supporting surface and having an inner surface defining the periphery of a flagstone forming cavity, said strip having longitudnally spaced 40 ribs on its outer surface with holes therein extending crosswise of the strip at points at which comers are desired, and stakes extending through said holes for anchoring the strip to said supporting surface at the corners of any selected shape defined by the stakes, said mold inherently producing flagstones with the rounded corners and somewhat curved sides of natural flagstones. References Cited in the file of this patent UNITED STATES PATENTS
  2. 2
    2,981,997 FLAGSTONE MOLD 5 Giles Warren Painter, Erie, Pa., assignor to Lord Manufacturing Company, Erie, Pa., a corporation of Pennsylvania Filed Jan. 26,1959, Ser. No. 789,176 1 Claim. (Cl. 25—118) This invention is a flexible mold for producing artificial flagstones or the like in any desired regular or irregular shape. In the drawing, Fig. 1 is a perspective of a mold;Fig. 2 shows several of the molds arranged to form an artificial flagstone walk;Fig. 3 shows a mold arranged to form an individual flagstone;and Fig. 4 is a section on line 4—4 of Fig. 3. The mold is a strip 1 of flexible material of one of the elastomers such as natural or synthetic rubber or one of the flexible plastics such as polyethylene. The rubber and plastic materials are preferred because they have the property of easily releasing from concrete. In use, the strip is supported edgewise on a supporting surface 2 as shown in Fig. 4 and the width of the strip corresponds to the thickness of the flagstone to be cast. The mold is held on the supporting surface by a plurality of stakes or pins 3 extending through edgewise holes 4 in the strip. The holes 4 are conveniently located in lugs or ribs 5 on one surface of the strip. Two ways of using the mold are illustrated. In Figs. 3 and 4, pins 3 on the same spacing as the ribs 5 are fixed to a wood pallet 6 and the strip is placed on the pins with the ribs 7 and 8 at the ends of the strips butting each other so as to form a completely enclosed cavity of polygonal shape with the periphery formed by the inner or smooth surface of the strip. With the mold in place on the pins 3, the cavity can be filled with the desired concrete mix to the level of the upper edge of the strip. After the concrete has set, the mold is easily lifted off the pins. The shape of the flagstone is determined by the location of the pins and can be regular or irregular as desired. The mold inherently produces flagstones with the rounded comers and somewhat curved sides of natural flagstones. In molds or forms made of rigid material, the rounded comer effect is difficult to obtain at reasonable cost. The flexible mold is also much lighter than rigid forms. The flexible strip 1 can have a thickness of % or less and still have adequate strength. 640,377 Haentges---------------Jan. 2, 1900 2,187,260 Brandenburg----------Jan. 16,1940 2,197,212 Hagemeyer____________Apr. 16,1940 2,873,505 Sheldon______________Feb. 17,1959
Independent claims2