US1239390A - Mold for casting concrete structures. - Google Patents

Description

E. P. HENRY. MOLD FOR CASTING CONCRETE STRUCTURES.

APPLICATION FILED NOVl I8, l9l3.

Patented Spt. 4, 1917?".

2 SHEETS-sluier 1.

EE. P. HENRY. MOLD FOR CASTING CONCRETE STRUCTURES.

APPLICATION FILED NOV. I8, I9I3- 9y9 Patentedept. 4,191?.

2 SHEETS-SHEET 2.

r srarns narnia ermee.

EDWARD P. HENRY, OF LONG BEACH, CALIFORNIA, ASSIGNOR 0F ONE-HALF TO GORDON H. CLARK, OF LONG BEACH, CALIFORNIA.

IVIOLD FOR CASTING CONCRETE STRUCTURES.

Specification of Letters Patent.

Patented Sept. a, 191i "t.

Application filed November 18, 1913. Serial No. 801,741.

To all 'whom z' may concern:

Be it known that I, EDWARD l?. HENRY, a citizen of the United States, residing at Long Beach, in the county of Los Angeles and State of California, have invented a new and useful Mold for Casting Concrete Structures, of which the following is a specification.

This invention involves the construction of poured walls, so termed in the art, and the mold or forms for their production.

An object of this invention is the production of concrete structures with minimum expenditure of time and money.

Another object is the production of a sectional mold of minimum weight and thickness and maximum strength and rigidity which can be'assembled and knocked down with minimum labor and maximum expedition.

By the construction and arrangement of the elements of this invention, I propose with the labor of, say, four men to erect a mold for a small structure as, for instance, a bungalow and to pour the concrete for such structure in one day, and to manufacture larger structures in proportionately short periods of time.

More specifically stated I construct a substantially rigid mold frame of standards and latch bars, the latch bars connecting and locking the standards together, and said standards comprising pairs of outer and inner members or joists which are securely tied and keyed to one another to prevent relative movement of said joists. After the frame has been constructed or while it is still under construction, form plates are placed from standard to standard and are detachably fastened to the standards by latch bars overlapping adjoining edges of the plates so as to form tight joints to sub-V stantially prevent leakage of water and con crete while the concrete is yet in a fluid state.

It has heretofore been customary to draw the plans of a building structure without any special reference to the mold which is to be employed in molding the structure, that is, the structure is not ccniined to dimensions based on any particular unit of size. It is obvious that in this invention the form plates may be cut to such dimensions as will produce structures varying in size by a fraction of an inch, but this inu vention contemplates that building structures be planned with a definite unit of dimension in view, so that such structures may `be cheaply and quickly erected without Waste of material; and for this purpose the mold is constructed of unit sections of a given dimension or multiples of such dimension.

Further objects and advantages may appear in the subjoined detail description and the drawings filed herewith and forming a part of this specification.

The accompanying drawings illustrate the invention.

Figure l is a plan view of my newly invented mold for casting a small bungalow or the like, with window and door frames in place.

Fig. 2 is an enlarged sectional detail of some of the parts in Fig. l on line indi* cated by m2, Fig. 3.

Fig. 3 is a sectional elevation on line indicated by x3, Fig. 2, a portion of one of the keepers being broken away for clearness of illustration.

Fig'. 4 is an enlarged broken View on line indicated by m4, Fig. 5, with concrete in place.

Fig. 5 is a broken sectional elevation on line indicated by m5, Figs. l and il, the concrete being omitted and portions of some of the inside plates being broken away for clearness of illustration.

Fig. 6 is an enlarged sectional detail on line indicated by Fig. 5.

Fig. 7 is a sectional elevation on line indicated by m7, Fig. 6, omitting the standard member.

The elements hereinafter enumerated are preferably all of metal and may, of course, be constructed in different shapes than those specifically described and depicted in the drawings.

Standards 1 of the mold frame comprise pairs of opposing bodies or joists which have their exterior surfaces, relative to the completed mold, angular in cross-section, and the shapes of such joists vary according to the location of the standards. For instance, the joists may be composed of one or more members in the shape off, angleirons 2 or T-irons 3 grouped as in the drawings, or may be constructed of any other suitable shapes grouped as deemed best for the structure to be built, and it is underlie stood that I at present prefer the shapes A and may be formed interiorly by the angle irons arranged in pairs, the T-irons and angle irons thus forming groups of three separate members; and other intermediate standards may be formed entirely by the T-irons 3 arranged infgroups of two separate members. Y.

The joists 2, 3 are provided with ,perforations 4 to receive taper tie bars 5 which are approximately square in cross section and provided with a series of oblong slots 6 disposed in the same direction and adapted to receive wedges 7, the spacing of said Slots being an inch, more or less, in order that the joists may be correctly spaced and locked for the formation ofpvari'ous thicknesses of walls, say from four to ten inches in thickness.

The wedges 7 are designed to engage loops 8 provided on each joist to lock the joists of each pair against movement toward one another. The loops are arranged on the external faces of the joists or standards, that is to say, the faces that are` eiiternally presented when the mold is completed, and a loop 8 is provided adjacent to and below each slot 6 and the wedge-keys 7 when driven through the slots 6 enter the wedge into said loops, thus rigidly tying the taper tie bars and the joists or standards together.

Means are provided to complete the mold frame and to securely lock the standards 1 in place relative to and in parallelism with one another, and for this purpose the joists 2, 3 are provided with keepers 9 made of twisted bars or the like and having notches 10 to receive and detchably hold the ends of latch frame bars 11 having offsets 12, the purpose of which will appearhereinafter. The latch frame bars 11, in the instance shown, are formed of angle irons and to facilitate the formation of the offsets 12, the horizontal legs of the angle irons may be cut away at their ends to produce lnotches 13 adjacent the offsets and notches, 10.

`The latch bars 11 are provided near their ends with slots 131 designed to engage the bottoms of the notches 10 so as to lock the joists of adjacent standards against movement toward and from one another. See Fig. 3.

Adjacent standards 1 are connectedfrom joist to joist with rectangular form plates of appropriate dimensions, and I prefer to make the form platesin, say, two sizes 14, 15, the plate 14 being, for instance, eighteen `inches by thirty-six inches, and the plate 15 being eighteen inchessquare, thus providing for the erection of the mold in units formed, `in this 'instance, in multiples of eighteen inches in length, width and height.

Theform'plates 14, 15 have offsets`16 near their ends to bring their inside faces substantiallyflush withthe inside faces of the joists 2, 3, said offsetsiclosely fitting against the offsets 12 of the frame bars 11 `and the upper and lower edges of said plates butting and being overlapped by Athe latch bars 11 which fit closely fromAend to end against said platesandthus materially aid in making tight jointsbetweenadjacent plates.

The foregoing construction produces such great rigidity of the mold that ordinarily it will not be ynecessary lto employ any elements to stiifen the same otherthan those alreadyenumerated,however, in case additional stiffening is desired, I provide braces or tie rods 17 designed to lie on'the upper edges of the mold and adjustably connected to opposite portions of the mold byforked clamps 18 and set screws 19 screw-threaded through'V the clamps and againstV the tie rods so as to fix the clamps at appropriate intervals along the bracerods in positiony to straddle` the upper ends of some `of the lioists 2, 3, as in Fig. 6, or any other convenient. parts of the mold.

I propose tol ca'stthewalls ofthe structure with the 4door and window frames in place and for this purpose perforations- 20 are provided intheform platesl at appropriate positionsv to accommodate detachable headed studs 21 on which the frames 22 vare Y hung. See Fig. 5,. y n

In practice the joists 2, 3 willipreferably be locked' together by such means as the tie bars 5,`wedges 7 and. loops S'to form the standards 1, either before reaching the site ofthe proposed building structure or after transportation :to such site before` erection of the mold on the site selected or designed to receive the structure.

Then a standard'1, say at the'lcorner of the proposed building or at any other preferred portion thereof, will .be erected and plumbed and :will be temporarily held in its plumbed position by guy lines indicated at 23jn Fig. 1. i Y

Then a second standard will'be erected and rigidly fixed in parallelism..to the first standard by connecting ksaid standards at top and bottom with latch bars 11. This plumbs the second `,standard in accordance with the'plumbing of the first standard.

yThen other of the standards will be erected and connected one to the other by latch bars 11 in accordance with the building plans -to complete a mold frame of thev there are a number of workmen, while the erection of the standards goes on, the form plates 14, 15 will be placed edge to edge one above the other from standard to standard and will be fastened to the standards by placing the latch bars 11 over the joints between adjacent plates and slipping the ends of said bars in notches 10 of the keepers 9; the frames 22 for the windows and doors being hung in position on the studs 21 as the work proceeds.

If desired the brace rods 17 secured in mold.

When one tier or more of the form plates, 14, 15 has been fastened in place, the operation of casting or pouring` the walls may begin and as such operation is well understood it need not be described in detail, and it is understood that the operation may be performed in any manner and by any means now known in the art or that may be known in the future.

Preferably the mold will be completed from bottom to top, at least at one section thereof before casting of the walls begins.

Then the concrete has hardened sufliciently, as determined by practice and the judgment of the constructor, if the walls are to be no higher than the one tier of standards, the latch bars 11 and form plates 14, 15 will be removed, then the wedges 7 will be removed from the slots 6 and then the tapered tie bars 5 will be hammered or otherwise driven out of the wall u and standards 1, whereupon the standards will be removed from the structure.

If the walls are to be higher than the one tier of standards 1, the tapered tie bars 5 and wedges 7 will be allowed to remain in place to maintain the standards in their positions, and an upper second tier of standards will bc erected in alinement with and on the upper ends of the lower tier of standards and connected by latch bars 11, as before described, to produce the second tier of the mold frame.

Then as before described form plates will be connected from standard to standard of the upper tier the same as for the lower tier and casting of the walls will proceed; and so on until the walls have been constructed to the rdetermined heights, whereupon'the standards of successive tiers from top to bottom will be loosened from the walls by removing the wedges 7, thus allowing all of the standards and tapered tie bars 5 to be removed from the structure and the openings in the wall caused by the removal of the tie bars may be filled with concrete may then be place to additionally stiftenI the if so desired.

The plates of th'e formtier immediately below the plates -of the next upper tier under construction are generally left in place until the operation of casting at said upper tier is completed, whereupon said plates are raised by suitable tackle or the like, not shown, to the second tier of standards above.

To facilitate the use of such tackle, the plates 14, 15 are provided near their ends with outwardly punched holes 24.

From the foregoing it will be seen that I not only propose to cast concrete to form continuous walled monolithic structures of a nature well known in the art; but that I also propose to employ means which will expedite the manufacture of such structures; and that like a founder of metallic products, I first set up a rigid mold which on account of the size and variable dimensions of the product, I make of interlocking sections, taking care that the rigidity of the mold is not materially impaired by making it in sections; and that to insure such rigidity I have conceived of the specific features hereinbefore described.

I claim 1. Av metallic mold for casting concrete structures, which mold comprises standards, each standard being composed of two separate members, there being oppositely disposed corresponding perforations in the members of each standard; taper tie bars for said standards, each of said tie bars being approximately square in cross section and adapted to pass through said opposite perforations for connecting the members of each standard with each other, there being oblong slots disposed in the same direction and spaced apart throughout the length of each tie bar; a loop below and adjacent to each of said perforations on such a surface of each member as is in an external relation to the completed mold; plates connected from member to member of adjacent standards; and wedges, each of which is adapted to engage one of said slots, one of said loops and one of said external surfaces for holding the respective members of each standard in a fixed relation to each other.

2. A metallic mold for casting concrete structures, which mold comprises, standards each composed of a single T-iron and two angle irons, means to lock said ll"irons and angle irons against relative movement, 115 plates, and bars detachably fastening said plates to the T-irons and angle irons respectively of adjacent standards.

3. A metallic mold for casting concrete structures, which mold comprises; a frame 120 composed of corner standards, intermediate standards and bars detachably connected to the standards; said corner standards each consisting of two angle irons and said intermediate standards each consisting of two 125 T-irons; means to lock the angle irons and T-irons of the corner and intermediate standards respectively against relative movement; and plates fastened to the frame by said detachable bars.

ironsof the standards respectively against relativemovement; and plates fastened t0 the frameby said detachable bars.

.ln testimony whereof, I have hereunto set 15 my hand at LosAngeles, California, this lst day7 of November, 1913.

JAMES R. ToWNsEND, GEORGE H. HILES.

4. A metallic mold for casting concrete structures, which mold comprises; a frame compcsed of corner standards, partition intersection standards, other intermediate standards and bars detachahly connected to the standards; said corner standards each consisting of two angle irons, said partition intersection standards each consisting of a T- iron andtivo angleiirons, and said intermediate standards each consisting of two T- irons; means to lock the angle irons and T- Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Iatents, Washington, D. C.

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