US2620542A - Concrete form - Google Patents

Description

Dec. 9, 1952 1.. FONTAINE 2,620,542

} CONCRETE FORM Filed Oct. 17, 1949 2 SHEETS-SHEET 1 'Tfg. 1

his AT TORNE Y FONTAINE CONCRETE FORM Dec. 9, 1

2 SHEETS-SHEET 2 Filed Oct. 17, 1949 P 3 25 E;L 26

lNVENTOR LAMAR FON TA/NE m ATTORNEY Patented Dec. 9, 1952 PATENT OFFICE CONCRETE "FORM La'mar sFcntainercDanville;---.Galif.,1: assignor-to Flexiform FCOhSh'llflfiOn Company-Inc Lafayette, lalif-.,,f a corporation (If-.CillifOl'Iiifl. A Applicatiohfictoberll, 1949;Se'r-ial Nona-1,695-

41Glaims; (Cl. '25-.131)

' v '1'. 2: inventionzrelatesntdlconcretei former and om efdihe objectsiof: my inventlon is the-provision 01cm easily tassembledzformv Another obj ect is the proyisi'on of a concretefoimrthattmaybe easilyldismantled and reassembled toreuse oni another job.

Stilliianother object'is the provisi'on of-a con cretefiform that'may beadjusted inlen'gth Thezinyention hasother objects andfeatures' ofaadvantafge, :so'me of-Whi'ch' with the foregoing;

will be; explairferl =in the following descriptionofthat' form =o1 i;he'=invention illustrated in the drawings. P; It is to ba -understood that theinvention is not liniited to :the embodiment shown by:

the? drawings; but may be -'included in a plurality of f oi'ms as=set forth' in' the claims.

Re'ferringato the drawings:

Figurei'l' ls a side elevation; and Figure 2 is'aplan view -of the-concrete form" of my invention;

portion'sbeirfgbroken awayto' redubethelength:

F igirre fi ls' a fragmentary sectional' viewon a l'ai ger scale taken in theplane indicated by the Broadly, my concrete formcomprises two, series ofi-vertlcal'panelsarranged spaced parallelisla'tioh -"-td formthe boundary surfaces tbetween which=concrete "isto be" poured; The abutting panels- :of each "series are heldini alinement" by spaced -bars*- extending longitudinally along the panels; the bars being held adjacent the panels by suitable tension rods. The tension rods extend transversely through the panels and across corresponding bars of each series of panels. Preferably the rods are located each adjacent the abutting edge of each panel, and are vertically spaced in-pairs. Any number of tension rods may be used but the minimum will be determined by the height and thickness of the wall to be poured. Means are also provided to prevent the two series of alined panels from collapsing toward each other.

More specifically, my concrete form comprises two parallel series or progressions of alined panel's :2;.;preferab1y .of' ,plyboardaand conveniente lyia; standard' i'x 8" injsize.

The panels of each series are arranged .verti-w cally; each of thezpanels being positioneds'o that panel :in. the series.

The alinement of :each series: of ipanels ais maintained by=bars:3, preferably of: angle iron and extending longitudinally along: the .outerisidez of: For: convenience in handling,'.rthe2 bars :are preferably about. twelve feet :longsand. are: vertically spaced .on: the panels so".that.='the alined panel'sare properly supported against the the panels.

pressure exertedby-the concrete.

The length of the wall to be poured will lot-ten determine the length :of bars'to be used and means :comprising. slots 2 4, a in qthev outstandin flanges of the. angle barsxprovide adjustability-as. to length when two or more short bars are tor be:

overlapped. The slots are preferably located .in the bars so that apair of slotsin each bar may be placed directly opposite'a pair of slots in the overlapping bar.

of". the pin, the flange. l6 projecting underthe outstanding flange of the bar whichiliesagainsta thelpin, thusbinding the structure together.

The threaded end portion 13 of the piniengages an internallythreadedbushing H fixed in the panel-.:* The bushing is formed "with an annular flange l8 on the inner end and provided with points for seating in the panel. Preferably the panel is countersunk so that a smooth surface is maintained on the inside of the panel. A washer I9 is retained on the other end of the bushing by a split spring ring 2|. When desired, the bushing may be removed from the panel simply by removing the split ring 2| and giving the bushing a light tap.

Preferably, two pins are fixed to each panel, one pin being located at the longitudinal midpoint of the panel at the top thereof; and the second pin correspondingly positioned but adja- Cap screws 6, .which pass through the outstanding flanges ofthe bars. and through: spacers! interposed therebetween fix the overlappingbars together.

Means are provided .for fastening at least: two such; longitudinal .bars. :to' each :series: of? panels'; Saidu means ..comprise: pins 8, each pin: formedwith a sheadc=9 including. a base; flange 1|, and a shank I'Zi having a threaded end; portion ".1 3. A. flanged/rings. isdisposedon the shank portion 3 cent the lower edge of the panel. Thus each series of panels is held in alinement while means are interposed between the two series to retain them in spaced parallel relation.

Said means comprise tension rods 22, extending transversely through. alined apertures located adjacent the abutting vertical edges of the panels.

Each tension rod comprises two connected sections 23 and 24, each section being formed with a head 25 including a base flange 26, and having an annular groove 21 spaced therefrom. The section 23 of the tension rod tapers slightly, commencing beyond the groove and terminating in an externally threaded end portion 28. The section 24 ends at a point corresponding to the point on the section 23 where the taper begins; and has internal threads tapped therein adapted to engage the threaded end portion 28. Each of the sections 23 and 24 is designed to receive a flanged ring 29 therearound in a manner similar to that already explained in connection 'with the pins 8.

To insure easy extraction of the rod from the concrete, the parts are so proportioned that the tapered portion of each rod lies wholly between the inside boundary surfaces of the form; and the separate section 24 and the section 23 extend from adjacent the inside surface of the head.

Means are provided for still further interlocking the bars and rods, comprising a plurality of bifurcated clips 32. Each clip is interposed between the bar and the panel, with the bifurcated end 33 engaging a groove 21 in the tension rod. With the bifurcated end of the clip thus engaged, the clip extends downwardly to a looped portion 34 adapted to fit about the downwardly extending flange of the bar. Thus the bars remain in fixed spacing on the rods and the various parts cooperating with each other form a readily assembled or disassembled structure.

I claim:

1. A concrete form comprising two series of alined panels to form the boundary surfaces of the wall to be poured in said form, a plurality of rigid bars engaging the outer surface of each series of alined panels and extending longitudinally therealong to retain them in alinement, tension rods extending transversely across one side of said bars, interlocking clips interposed directly between the bars and the rods, said clips also being interposed directly between the bars and panels for retaining the bars in fixed spacing on the rods and threaded pins secured to each panel of each series and to the associated bars between adjacent rods and binding the clips in interposed position between the bars and panel.

2. A concrete form comprising two series of alined panels to form the boundary surfaces of 4 the wall to be poured. in said form, a plurality of rigid bars engaging the outer surface of each series of alined panels and extending longitudinally therealong to retain them in alinement, tension rods extending transversely across one side of said bars, interlocking clips interposed directly between the bars and the rods, said clips also being interposed directly between the bars and panels for retaining the bars in fixed spacing on the rods, threaded pins secured to each panel of each series between adjacent rods, and aflanged ring surrounding each pin and engaging each associated bar for binding the panel to the bar and binding the interlocking clips in interposed position between the bar and panel. 3. A concrete form comprising two series of alined panels to form the boundary surfaces of the wall to be poured in said form, a plurality of rigid angle bars extending longitudinally and associated directly adjacent each series of panels to retain them in alinement, tension rods comprising two connected sections and extending transversely across one side of said bars, each of said rods having an annular groove therearound adjacent each associated bar, a clip engaging each groove and folded about the bar and positioned directly between the bars and panels for retaining the bar in fixed spacing on the rod, a pin in threaded engagement, with each panel between adjacent rods, and a flanged ring surrounding each pin and rod and engaging the associated bar for securing the panels of each series to the bars and binding the clips in intertioned face of the angle bar, and a ring surround-- ing the pin and having a flange engaging the angle bar.

LAMAR FONTAINE.

REFERENCES CITED The following references are of record in th file of this patent:

UNITED STATES PA'IENTS Number Name Date 1,626,897 Wedberg May 3,1927 2,164,592 Pilj July 4, 1939 2,222,339 Schenk Nov. 19, 1940. 2,270,448 Juhl Jan. 20, 1942 2,358,975 Hillberg Sept. 26, 1944'v 2,401,263

McDonald May 28, 1946

Images