US2474587A - Concrete form board fastener - Google Patents

Description

June 28, 194-9 'y. MOORE CONCRETE FORM BOARD FASTENER Filed Oct. 12, 1945 INVENTOR.

Vl/VCf/VT H. Mamas Patented June 28 1949 PAT EiNT O FFICE 2 "Claims. (01.;25-131) This invention relates to (concrete form board fasteners for securingadjacent pairs of boards of one side of a form,-such as a form for a Wall, against a supporting; member. Usuallythe boards have square edges and are placed above each y other in edge to .edgeeoplanar relation against vertical frame members that I are like .studding in a building.

One of-the objects of this invention is theprovision-of a cheap,simple strongmeans for holding the form boardsof a concrete -form in coplanar relation against the frame members .as are mentionedabove, and whichfasteners are so constructedas to facilitate their removal .in dismantling the form.

Another object of the invention "is the .provision of cheap fasteners ,for holding the .form boards of a concrete -:f o rm incoplanar relation, and which fasteners eareeasily securedin position and are easilyremovedifordismantlingthe form without injury thereto-so they-may be usedrepeatedly, and=which securementand removaLmay be accomplished solely ,by ,use of aconventional claw hammer.

Another object of the invention .is the provision .of :a fastener for holding boards. of .;a v wall in position against ,studding in ,such places .as field offices, temporary .tool and ,material sheds, etc.

Still further .objectslof the invention are improved means for holding .boards against frame members -.in coplanarrelation .withoutinjury to the boardsas would occur inmailingthe boards to the framemembers; means formore rapidly securing boards to frame membersto form a .wall, thus saving labor; improved -means for holding boards against frame members to form a wall that reduces --the number of nails normally required where the boards are nailed to the members; improved means;for holding boards against frame members to form a wall and which means eliminatesthe hazards of projecting nails'during the dismantling of a wall.

Other objectsand a'dvan'tageswill appear in the description and drawings.

In the drawings Fig. '1 is afragrnentaryisometric view. partl in section, andsemi diagramm'atically gillustratinggthe invention as applied toithe two walls'of a concretewall'form.

Fig.2 isan elevational Viewofa fastener.

Fig. 3 is a sectional Viewtaken along'lin'e 3- 3 of Fig. 2.

Fig. 4 is an elevational view of a form of the invention that differs slightly from that of Fig. 2.

Eig. 5 is a sectional-view taken along line'5-5 oflFig e.

Fig. 61s .a fragmentary view of a portion of a Wall form showing a fastener adapted for use with tongueand groove boards-the boards being in-section.

Fig. 'Tis a fragmentary view of a portion of a "wall form showing .a fastener adapted for use with ship-lap boards, theboards being in section.

'Inrdetail, .referring to :Fig. 1 the wallso'f the form are. each madeu'pof horizontally extending boards I and in each wall the boards are disposed one-above the other in coplanar relationship and against vertical frame members 2. The latter havethe same relationship to the boards as the studding of a wall in, a building.

The fasteners are generally designated 3 and are preferably made of relatively thin metal, such as :20 to 2 4.gauge lvanized or plain sheet iron. For this reason ,the cracks indicated in Fig. '1 between .the boards are greatlyexaggerated.

,Eachof the fasteners 3 comprises a strip of sheet metal 4 formed with a loop 5 at one end in Whicha nail ii is frictionally held while the other end portion of the strip may be bent .oppositely outwardly at right angles to the plane of the strip and in ,direction transverselyof said plane .to form projections Cl, 58. Said projections are coplanar and their outer ends are slightly preferably :bent indirection away from the nail carrying end of .thestrip (Fig. 5), as indicated at 7.9, to facilitate positioning the uppermost. of each pairofadjacent superposed boards during the setting up of a'wall.

The ,nail 6 extends transversely of the length of strip 4 but'substantially in the plane of the latter. Thu upon positioning the strip horizontallyacross the upper .edge of one of the boards I and adjacent one of ,the members 2 with the point of the nail against said membenit willlbe apparent that the nail can be driven ,intosaid member for holding the board I against said me er- In operation the fasteners may be positioned across the uppermost'board of the form wall that is being constructed and adjacent one or moreof the members '.2 with the points of the nails 26 facingsaid member. Each fastener may then be urged in a direction transversely-of each such memberlto cause theprojection .l or t, asthecase maybe to hold theboard engaged therebyagainst the said member after which nail 6 may be driven into the member for tightly holding the board thereagainst. The next board may then be positioned above the board thus secured and the outwardly bent ends 9 of portions 7, B will facilitate the operation,

In actual practice, before securing the fastener in position, the nail 6 is preferably frictionally held in loop with its pointed end about even with the edge of the strip 4 that is adjacent member 2. The frictional resistance to sliding of the nail during driving into the member 2 is relatively slight.

By reason of nail 6 being substantially in the plane of the strip 4, it is easy to position the fasteners between adjacent pairs of boards after they have been positioned against the members I, should it be found necessary to do so. The strip 4 of each fastener is so thin that the boards are for all practical purposes in edge to edge abutting relation.

In order that the claws of a conventional claw hammer can readily engage the nail heads, each strip 4 is cut away at Ill adjacent the nail head and where the material of the strip 4 is of relatively heavy gauge the metal of loop 5 is also cut away alongside the head at H so as to insure engagement between the hammer claws and the head of the nail. Otherwise the nail could not be removed from the member I without injury to the fastener.

The fastener of Fig. 4 is identical with that of Fig. 2 except for the substitution of a slightl different form of means for securing the nail 6 to the strip. The elements that are similar to those of Fig. 2 have the same numbers.

In the fastener of Fig. 4 the strip 4 is not strictly formed with a loop but instead the metal is stamped out at l2 to one side of the nail centrally of the strip at one end thereof, and the portions I3 above and below portion l2 are forced to the opposite side of the nail (Fig. 5) so as to cooperate with portion l2 to provide a passageway for the nail. A projection I4 on strip 4 alongside the nail adjacent the head of the latter functions as a stop for the nail when the latter is driven into member I. The width of the projection is such as not to interfere with the claws of a hammer engaging the nail head.

The fastener of Fig. 6 is identical with that of Fig. 2 except that the end of the same opposite the nail is generally of U-shape, as at l5, for fitting over the tongue l6 and into the groove of adjacent tongue-and-groove boards IS.

The fastener of Fig. '7 also has a generally U- shaped outer end ll but which end is formed to fit between the adjacent edges of ship-lap boards 20 with the lap portion I8 in the U of end l1. Otherwise this fastener is identical with that of Fig. 2.

It is obvious that the structure of Figs. 4, 5, in so far as the nail securing means is concerned, may be adopted although the structure of Fig. 2 is preferable.

By using the fasteners, as described, they save time because the boards can be placed much faster and easier than heretofore. The labor costs are reduced inasmuch as fewer nails are necessary and those that are required are driven into readily accessible places clear of reinforcing steel or of the other wall of a pair of walls comprising a wall form.

After the walls of a form are used, the fasteners are easily removed before the walls are away from the concrete thus facilitating the removal '4 of the walls. In conventional structure the nails cannot be removed until the walls are taken down because the concrete covers the nail heads.

The fact that the boards of the wall are not nailed to the studding or vertical members saves labor and lumber because the boards do not have nails secured thereto and there is no splitting or breaking of lumber as inevitably occurs where the boards are nailed to the frame members. Also there are no projecting nails in the boards that are stripped, thereby making the stripping operation safe in so far as there is any chance of the operator being injured by nails.

The fasteners do not mar the surface of the concrete inasmuch as the projections l, 8 are practically coplanar with the boards.

The drawings and description are not intended to be restrictive of the invention but are merely illustrative thereof.

I claim:

1. A concrete form board fastener for securing adjacent pairs of boards of one side of a wall form against a supporting member, said fastener comprising a strip, a nail carried by said strip at one end of the latter in a position extending transversely of the length of said strip but in the plane of the latter with the head of said nail adjacent one of the longitudinally extending edges of said strip, the opposite end of said strip being bent in direction transversely of the plane of said strip for engaging one of the laterally directed surfaces of the boards of each such adjacent pair when said opposite end is disposed flat between said boards, the portion of said strip adjacent said head being cut away to reduce the width of said strip to facilitate engaging the head of said nail by the claws of a hammer.

2. A concrete form board fastener for securing adjacent pairs of boards of one side of a wall form against a supporting member, said fastener comprising a strip, a nail carried by said strip at one end of the latter in a position extending transversely of the length of said strip but in the plane of the latter with the head of said nail adjacent one of the longitudinally extending edges of said strip, the opposite end of said strip being bent in direction transversely of the plane of said strip for engaging one of the laterally directed surfaces of the boards of each such adjacent pair when said opposite end is disposed flat between said boards, means functionally securing said nail to said strip for sliding of the nail longitudinally thereof comprising a loop formed in said strip at said one end in which said nail is disposed, a portion of said loop adjacent the head of said nail being cut away to facilitate engaging the head of said nail by the claws of a hammer.

VINCENT H. MOORE.

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

UNITED STATES PATENTS Number Name Date 1,276,354 Hansson Aug. 20, 1918 1,746,298 Alley Feb. 11, 1930 1,850,462 Kinninger Mar. 22, 1932 1,920,607 Summers Aug. 1, 1933 1,978,963 Schwaab Oct. 30, 1934 2,316,424 Hasenburger et a1. Apr. 13, 1943

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