US1329095A - Mold for constructing hollow walls of concrete - Google Patents

Description

J. 8. RICHARDSON.- MOLD FOR CONSTRUC HNG HOLLOW WALLS 0F CONCRETE.

APPLICATION FILED MYAY-5, I919.

Patnted 11211127, 1920.

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J. R. RICHARDSON. MOLD FOR CONSTRUCTING HOLLOW WALLS 0F CONCRETE.

Y APPLICATION FILED MAY 5, I9?- -1,329,095, Patented Jan. 27, 1920.

2 SHEETS-$HEET 2- 1121i cjaizz fiz'ciai'd son anonwg JOHN R. RICHARDSON, or MADEBA, CALIFORNIA.

MOLD FOR CONSTRUO'I'ING HOLLSW \VALLS OF CONCRETE.

Application filed May 5, 1919.

A To all whom it may concern Be it known that 1, JOHN R. RIorrARnsoN, a citizen of the United States, residing at Madera, .in the county of Madera and State of California, have invented certain new and useful Improvements in Molds for Constructing Hollow Walls of Concrete, of which the following is a specification.

This invention relates to certain improvements in molds which are used in the construction of hollow and reinforced walls from concrete or other similar material and is designed as an improvement upon the construction of molds as shown in Letters Patent of the United States dated September 18, 1917, which are numbered 1,240,435 and 1,240,436.

In carrying my invention into practice, I provide a plurality of complementary abutment forming members which when associated are maintained opposite one another, they being of a length sufficient to mold one story of a building and are of such configuration as to provide on the inner sides of the walls inward projecting abutments with converging sides and truncated ends, said Opposite abutments being connected by tiebars, which tie-bars and the inner and outer mold plates are associated or maintained in position by the abutment forming members.

One of the objects of the invention is to provide abutment forming members of similar configuration which have recesses in their abutting edges to receive tie-bars, the tie-bars being maintained in position by clamps, the aforesaid members being made of wood are engaged by the pointed ends of lag screws which are used to connect the outer mold boards or plates to the abutment forming members.

In the accompanying drawings which illustrate a preferred embodiment of my invention, Figure 1, is a perspective View of the mold partly assembled. Fig. 2, is aperspective view of a pair of the abutment forming members of the mold. Fig. 3, is a perspective view of one form of clam for holding the ties in engagement with the abutment forming members while assem- {bling the parts of the mold. Fig. 4, is a plan View of the mold set up and partly filled with concrete. Fig. 5,v is a horizontal section of a portion of the mold, and Fig. 6, is a perspective view of one of the outer mold plates.

Preparatory to setting up the mold or Specification of Letters Patent.

Patented Jan. 27', 1920.

Serial No. 2941795.

forms I lay a concrete foundation 7, in which is partly embedded a board 8, the width of which board determines the width of the air space between the inner and outer walls. Abutment forming members 9, which are of a length about the height of one story of the building, are set up so the inner faces of their lower ends will bear against the edges of the board 8, with their lower ends resting upon the foundation 7, and they may be maintained in a vertical position by a top plate 10, to the underside of which is secured a spacing strip 11, of the same width as the board 8. The abutment forming members are each of like shape, the inner and longer sides 12, having reduced abutting edges, which have at suitable intervals recesses 13, which may be either round or fiat to accord with the shape, in cross section, of the tiebars 14. The thickness of the members 9, which are shaped to provide abutment forming recesses which determine the size and shape of the abutments, the thickness of the walls between the abutments being fixed by the distance between the inner face of the reduced portions of the members 9.

When a pair of opposite or inner and outer members have been placed in position and the top plate placed thereon, the other end being maintained against the edge of the dividing strip 8, the tie-bars are individually placed and maintained in position by suitable clamps, as shown in Fig. 3, and when successive tiebars are positioned another pair of the abutment forming members are erected, and the clamps are removed.

A top plate 10 is temporarily attached to the members 9, and when the four pieces or two pairs of the abutment forming members are in place; four others are erected in a similar manner they being spaced as desired, to provide any suitable distance between the abutments of the completed walls. The space between adjacent mold forming sections is spanned by inner mold plates 15, which are provided adjacent to their upper edges with apertures for tacks, or the like, to hold the plates in place, which tacks are removed before the concrete in filling the forms reaches them.

Vertical reinforcing bars 16, are engaged by the bent or looped ends of the tie-bars 14:, the upper ends of the bars 16, engaging with the edge of the top plate 10, said bars being in line with the center of the truncated portion of the abutments and near the center of the Walls. The end portions of the tie-bars 14, are connected to the vertical bars 16 and to horizontal bars 17, which rest upon and are secured to the tie-bars 14; and to the vertical bars 16.

The outer mold plates 18, may be either of planks of wood or strips of sheet metal and they are provided with openings for the passage of lag-screws 19, which openings are spaced so the screws may enter the outer faces of the abutment forming members to hold the outer mold boards in place, the inner faces of the boards or plates 18 engage with the blocks or strips 20, which serve as closures for the ends of the mold and at the same time determine the thickness of the walls, except at the abutments. When the outer mold plates are of wood the lag-screws will hold in place cleats 21, which are of a length to engage the face of the adjacent mold board, and when the outer mold plates are of sheet metal, as shown by Fig. 6, me tallic cleats will be' riveted to the upper edges thereof.

In molding the corners I use sheet metal or other suitable material in the construction of the elements or parts 22 and 23, as shown by Fig. 4:, such parts being shaped to provide inward extending abutment forming portions, and when such parts 22 and 23 are of sheet metal they will be provided near their upper edges with perforations to receive tacks or nails, that temporarily attach the same to the sections 9.

With the means herein set forth, or shown by the drawings I can cast or pour walls of concrete or other cement mixture, which walls will have an air space of a predetermined size, and except as to the abutments the walls may be of any desired thickness, within the limits of the length of the lagscrews.

It will be noted that the invention herein set forth provides vertically divided abutment forming members which support the tie-bars and which also maintain all reinforcements of the wall and the inner and the outer mold plates, and that each section of the abutment forming members are of like construction and of a length and size suiiicient' when assembled to carry all the parts required to mold an entire story of a build mg.

The clamp shown by Fig. 3. consists of a fiat bar 24, of suitable material that has near one end a recess 25 and at a suitable distance therefrom a perforation to receive a pin 26. In use the pin 26 being removed the recessed end of the bar is inserted in the space between opposite pairs of vertical members or supports to engage with a tie-bar to place the same in a recess 25 in the bar 24, the bar being moved to draw the tie-bar in one of the recesses 13, the pin 26 is then inserted and by depressing the end of the bar that carries the pin such pin will be forced into engagement with the edges of the members 9, as shown by Fig. 1, thus holding a tie bar in place until an opposite member or support has been erected, separate clamps being used for each of the tie-bars, it being noted that the recesses 13 space the tie-bars 14 which are held in place by the clamp and that the removable pin 26 thereof engages the sides of two of the members 9 and holds the tiebar in the recess 18. until abutting members are placed in position when the recesses in the abutment forming members will maintain the tie-bars which tie bars may be either flat or round.

It will be noted that the tie-bars 14, are of such length that the ends thereof will be located at a considerable distance beyond the abutments and that the vertical bars 16 engage the looped ends of the tie-bars 14 that support the horizontal bars. and in practice the bars are tied to each other as shown.

With a mold of the character hereinbefore described, no scaffolding is required and the ties and all reinforcing bars are maintained in place when the mold is set up, which I consider an advantage over placing the ties and reinforcements during the filling of the molds with concrete.

It will be noted that the top 10, is of less width than the distance etween the outer faces of the walls, to allow a space for completing the filling of the wall forming chamhers, and that the construction and arrangement of parts are such as to dispense with collapsible inner forms.

Though I have shown a preferred construction for molding a hollow wall, a part of which consists of oppositely located interior abutments, vertically located and connected by comparatively thin portions. such walls having continuous air spaces, I do not limit myself to the precise construction of the parts shown, as the size may be varied and the construction modified without departing from my invention, as set forth or pointed out by the claims.

The abutment forming members and supports though preferably of wood may be of wood faced with metal particularly when outer forms or planks are not used and the cement is applied with a concrete gun. The abutment forming members can be spaced to provide the door and window openings and will carry the frames thereof.

I claim 1. In a mold for molding in sz'tu hollow walls having oppositely located and inward extending abutments with converging sides and truncated ends, a pair of similarly shaped supports which when associated provide means for forming the abutments and tie-bars for connecting the abutments which are maintained between the supports that constitute the abutment forming members.

2. In a mold for constructing hollow walls having abutments, a pair of abutment forming members provided with reduced longitudinal edges in which are formed recesses that constitute means for supporting tiebars.

3. In a mold for use in constructing hollow walls with abutments, vertically maintained supports for inner and outer mold plates which constitute abutment forming members the engaging edges thereor being provided with tie-bar receiving recesses.

4:. In a mold for use in the construction of concrete walls, separable supporting members each of which have parallel inner and outer faces, an end at right angles thereto, an angular face and a reduced portion, means for maintaining a plurality of such members to provide abutment forming parts of the mold, and means for associating inner and outer mold plates with the outer faces of the supporting members.

5. In a mold for hollow walls which have inward extending abutments which are connected by tie-bars, vertically divided supports which constitute mold sections, reduced abutting portions in which are formed recesses for tie-bars, and means for associating with said vertically divided mold sections and supports inner and outer mold plates.

6. In a mold for hollow walls, a plurality of abutment forming members, for inner and outer mold plates, means for removably attaching the inner and the outer plates to said abutment forming members, and longitudinally disposed spacing means that are engaged by the abutment forming members.

7. In a mold for forming walls with abutments, a vertical support and a complementary support each in cross section being of the same shape and adapted when reversed to be used as abutment forming members of a mold and as carriers for inner and outer mold plates; when the plates are associated therewith to form the Walls with which the abutments are integral.

8. In a mold for use in forming hollow walls having oppositely located abutments with converging sides and truncated ends, of a pair of abutment forming members and supports for other members of a mold, the abutment forming members having reduced portions the edges of which are adapted to abut and recesses in such reduced portions.

9. In a mold for forming walls having integral abutments, an abutment forming means comprising two members which in cross section are hexagonal the same being formed by the removal of a trapezoidal portion from one corner which is of less width than the width of the members, to provide with other parts of the mold a wall having abutments with flat ends and inclined sides.

10. In a mold for use in the construction or" walls having abutments, the combination of a plurality of vertical members which are assocated in pairs each pair being of such transverse configuration as to provide an abutment forming recess, mold plates which are associated with said members beyond the abutment forming recess and other mold plates maintained in parallel relation thereto.

11. In a mold for use in constructing walls which are provided at intervals with abutments, a pair of vertical members which when associated provide means for molding the abutments, mold plates which are adapted to be removably attached to the vertical members to span the spaces beyond the ends thereof, mold plates which are spaced beyond the abutment forming members and means for maintaining such mold plates which engage with the abutment forming members.

JOHN R. RICHARDSON.

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