US2554430A

US2554430A - Form plate holder

Info

Publication number: US2554430A
Application number: US16257A
Authority: US
Inventors: Lemuel R Vines
Original assignee: Individual
Current assignee: Individual
Priority date: 1948-03-22
Filing date: 1948-03-22
Publication date: 1951-05-22
Anticipated expiration: 1968-05-22

Description

May 22, 1951 Filed March 22, 1948 L. R. VINES FORM PLATE HOLDER 2 Sheets-Sheet 1 INVENTOR. /ffrn/a/f? V/'Ufs May 22 1951 L. R. vlNEs 2,554,430

\ FORM PLATE HOLDER Filed March 22, 1948 2 Sheets-Sheet 2 Patented May 22, 1.951

UNITED STATES PATENT OFFICE FORM PLATE HOLDER Lemuel R. Vines, Hayward, Calif.

Application March 22, 1948, Serial No. 16,257

2 Claims.

The invention relates to devices and methods used in erecting form walls on a concrete floor slab of a structural steel or a reinforced concrete building.

In structural steel concrete building construction it is customary to first erect the structural steel members, support the floor soflits thereto for pouring of the concrete floor slabs, and thereafter erect the forms for the concrete vertical walls on the floor slab. The problems presented in the latter operation, that is the erection of the wall forms on the concrete slab, are those to which his invention is directed. Various methods cf locating these wall forms have been heretofore used. One method is to nail the form plates directly to the concrete slab after the latter is poured and while the concrete is still fresh. This method has the disadvantage of usually chipping the slab so that subsequent refinishing is required, and also the disadvantage of uncertainty in that the plate thus secured will not always remain in place. Another common method is to brace the form wall plate to the nearest forms of the previous Pour. This procedure has the disadvantage of requiring the use of considerable lumber and labor in framing, frequently aggravated by the fact that the forms of the previous pour are not in close proximity to the wall form to be erected. In construction to which the present invention relates it is customary to cast in the floor slab a plurality of reenforcing dowels along the line of a vertical Wall to be erected so that these dowels project into and reenforce the concrete wall. In a similar manner dowels are set in the slab to extend into and reenforce vertical concrete columns. In accordance with the present invention and as an object thereof, advantage is taken of these reenforcing dowels to locate and secure in place the forms for the vertical walls or columns above noted.

Another object of the invention is to provide a device and method for securing the form walls in place on a concrete slab wherein very substantial savings of lumber and labor are effected, and in which chipping and subsequent repairing of the concrete slab is avoided.

A further object of the invention is to provide a device of the character described which may be quickly and permanently set in place for the erection of the wall form in a rigid location thereby eliminating the labor of rechecking and relocating the form as repeatedly occurs where devices and methods heretofore available are used.

Still another-object of the invention is to proevide a device of the character above which may be installed without the use of special tools and which is readily adaptable for securing in place all types of wall, column and pilaster forms.

The invention possesses other objects and features of advantage, some of which, with the foregoing, will be set forth in the following description of Ythe preferred form of the invention which is illustrated in the drawings accompanying and forming part of the specification. It is to be understood, however, that variations in the showing made by the said drawings and description may be adopted within the scope of the invention as set forth in the claims.

Referring to said drawings:

Figure l is a slide elevation showing a form plate holder constructed in accordance with the present invention.

Figure 2 is a plan view of the form plate holder illustrated in Figure 1.

Figure 3 is a cross-sectional View of the form plate holder taken on substantially the plane of line 3 3 of Figure 2.

Figure 4 is a cross-sectional view taken substantially on the plane of line 4 4 of Figure 2.

Figure 5 is a perspective View of a modified form of the form plate holder.

Figure 6 is a perspective view of a further modified form of the invention.

As above explained the form holding device of the present invention is adapted for use in the erection of a wall, column or pilaster form on a concrete slab containing a plurality of reenforcing dov/els projecting vertically from the top surface of the slab. The general construction is illustrated in Figure l including a concrete slab .l i, a plurality of dowels i2, and form walls made up of a form plate i3, studs l and wall sheathing I6. The device of `the present invention includes an elongated element il such as a rod, strap, bar, or the like of rigid form and on which is located means i8 for securing and anchoring of the element to one of the dowels I2, and means i9 which is adjustably positioned along the length of the member il and-formed for attachment to a forxn plate I3 to firmly hold the latter in desired spaced relation to the dowel I2. After locating and anchoring the plate i3, the studs I4 and wall sheathing i 5 may be readily erected. In the illustration depicted in Figure l, two parallel rows of dowels are illustrated as would be found in a relatively wide wall construction and the element l'l is extend transversely to the rows of dowels for anchoring of form 'plates i3 on opposite sides of the dow'els,

ent device and after the erection of such wall,Y

locate and support the opposite form wall by means of snap ties commonly used for this pur- Y pose. Preferably, a plurality of the present devices are connected to a plurality of dowels and to a form plate at two or more longtiudinally spaced positions thereon so that the form plate is rigidly supported in parallelism or as may be desired to the dowel row. Also, while a transverse perpendicular arrangement of the element l1 with respect to the dowel row is illustrated, it will be clear that the elementV E1 may be'eX- tended diagonally with respect to the dowl row for anchoring a form plate where such a diagonal arrangement is more convenient or will produce amore rigid structure. Y Y Y The transverse tie element I1 is here illustrated as a pencil rod which is preferred because of its ready availability, uniformity, strength and general adaptability to the present invention, a1- though, as above indicated, other elongated structural elements such as straps or bars may be used. The dowel anchoring means it in the preferred form of the invention as illustrated in Figures l to 3 of the drawings,- comprises a U- shaped clip 2i-see Figure Z-having spaced apart generally

parallel side portions

22 and 23 which are formed with aligned

openings

24 and 26 adjacent their free ends for receipt of the pencil rod l1. As will be seen from Figure 2, the spacing of the

sides

22 and 23 is somewhat greater than the diameter of the dowel i2 so that the dowel will fit between the sides. Thus, the clip member 2i may, as shown, be inserted in straddling relation to the dowel i2, and the pencil rod I1 inserted through the aligned

openings

24 and 26 so as to thereby confine the dowel within the enclosure dened by the U-shape of the clip member as closed across its free ends by the rod i1. The

opposite sides

22 and 23 of the clip member areformedyas illustrated in Figure 3, with aligned slots 21 and 28 for slideably receiving a transversely extending wedge 29 having tapered sides 3l and 32. Upon driving of the wedge 3l through the aligned slots 21 and 28, while the wedge side S2 bears against the periphery of the dowel l2 and grips the latter between the wedge side 32 and the pencil rod l1. This operation also draws the outer edges 34 and 36 of the openings 2li and 2t tightly against the pencil rod so that the entire assembly, that is the clip member 2i, the wedge 29, the dowel l2 and the pencil rod i1, are all rigidly locked together as an inte ral assembly. Prior to locking of the pencil rod il tothe dowel as described,

the clip member i8 may be adjusted longitudinally of the rod so as to obtain a fixing of the dowel to a desired longitudinal portion of the rod, thereby leaving the balance of the length of the rod to extend to one or more form plates as Vmay be desired. Preferably the opposite ends 31 and 38 of the wedge key 29 are offset as illustrated in the drawings to prevent the key from falling out of the slots 21 and 28.

A modified form of the rod to dowel fastening means is illustrated in Figure wherein the rod l1' is preformed with an open loop portion 39,

which may be readily positioned on a dowe1 l2'.

Preferably the overlapping portions 4I and 42 in the preformed loop as illustrated in Figure 5, are spaced apart by a distance admitting the dowel to the loop when the latter is rotated to a vertical position of the loop aligning the dowel with the opening between these spaced portions 4I and 42. After thus placing the loop in encompassing position around the dowel l2', the rod I1 may be rotated to a substantially hori- Zontal position of the loop and the portion 4I driven down upon the portion l2 by means of a hammer or the like to thus close the loop tightly around the dowel l2'. The free end A3 of the rod I1 may then be engaged with a piece of pipe or other suitable tool and bent around the dowel l2 to continue away from the dowel, as shown in dotted lines, for attachment to a form plate as may be desired.

A further modified form of the rod to dowel attaching means is illustrated in Figure 6 of the drawing wherein a set screw le is provided on the U-shaped clip member 2i instead of the Wedge 29 shown in the preferred embodiment. The principal advantage of the set screw is to alford a somewhat greater range of adjustment than the wedge where a variety of dowel diameters may be encountered. n this form of the invention the set screw dit is threaded through the 'closed back i6 of the clip member 2i so that the inner end 41 of the screw bears forcibly against the dowel l2 so as to clamp the latter between the set screw and the pencil rod Il, the latter beingconfined in aligned

openings

24 and 26 in the opposite sides of the clip member adjacent their free ends as in the first described embodiment.

The means i9 for attaching the form plate i3 to the pencil rod here comprises an angle member composed of right angularly related base and side portions itil and 9. As will be best seen from Figures 3 and 5, the base portion 48 is formed with a centrally arranged opening 5| in which is mounted a U-shaped clip member 52 having opposed side portions 53 and 5d extending through the opening and an integral end 5S spaced above the base 48. The side portions 53 and 5d are formed with aligned

openings

51 and 58 adjacent their free ends 59 and 6l for receipt of and slideable mounting upon the pencil rod I1. A wedge key 62 is inserted between the

clip sides

53 and 54 and is provided with tapered sides B3 and titsee Figure'll-which engage the closed end 56 of the clip and the base 48 respectively so that when the key is driven home, the clip member is elevated with respect to the base 48 to thereby forcibly draw the pencil rod i1 against the base, and-thereby lock and anchor the parts together. Prior to such locking action, the base A6 may be moved along the length-of the pencil rod Vi to a desired spacing with respect to therdowel l2' and thereupon locked to remain in fixed relation with respect to the dowel. The upstanding side portion 49 of the member is, as illustrated, at right angles to the pencil rod and is thus adapted for positioning against and securing to the form plate I3. Preferably, and as indicated in Figures 2, 4 and 5, the side i9 Vis provided with one or more small openings through which a nail 61 or the like may be driven to fasten the side 119 to the form plate I3. In order to retain the angle member I9, clip member 52, and wedge key 62 in assembled relation when not in use, the opi posite ends 68 and Stof the wedge key are oiset so as to prevent the key from falling out of its slot provided in its U-shaped clip member, and the free ends 59 and 6I of the latter are likewise olset so as to prevent the Withdrawal of the clip member from the opening 5I in the base 48 of the angle member. Spacer blocks 1I may be positioned under the form plates I3 so as to elevate the pencil rod I'I from the surface of the floor slab sufficiently to enable the ready adjustment of the several parts on the pencil rod.

From the foregoing, the use and application of the device and method of the present invention Will be readily understood. Initially, the several parts are assembled on a pencil rod of suitable length, that is, a length to extend from a dowel to one or more form plates. The rod to dowel attaching means I8 is then adjusted longitudinally of the pencil rod to desired position and thereafter anchored to the dowel in accordance with one of the disclosure forms 1 above described. The plate fastening means I9 may then be adjusted longitudinally of the rod and xed at a desired location relative to the dowel. Thereupon the form plate I3 may be positioned in place and nailed to the fastening means I9 as above described, and the balance of the form erected on the plate. If desired, a plurality of dowel fastening means I8 may be assembled on a single pencil rod I1 for fastening to a plurality of dowels Where such an arrangement is required for rigidity or to facilitate construction. Similarly, a plurality of the present devices may be attached to a single dowel by superimposing one on the other. Such an arrangement might be adopted for building a form around a single dowel. Also, as above described, and as depicted in Figures 1, 2 and 3 of the drawings, a plurality of plate anchoring means I9 may be secured to a single pencil rod where a plurality of form Walls are to be secured to a single dowel. Accordingly, the device and method of the present invention affords extreme flexibility in construction enabling a multitudinous arrangement of form Walls with respect to one or a plurality of reenforcing dowels whereby all types of forms for Walls, columns, pilasters and the like may be quickly and readily erected and securely and permanently anchored in place. After the Wall, column, pilaster, or the like, has been poured, the form may be removed by loosening and detaching the plate holding means I9. This may be done by driving the wedge key 62 to a loosened position, thereby permitting the pulling of the form from the free end of the pencil rod. 'I'he latter, as Well as the dowel attaching means I8 is left in the concrete Wall and forms a reenforcing part therefor. The outer free ends of the pencil rod may be clipped at the face of the concrete Wall as is customary in the case of reenforcing steel rods.

I claim:

1. For use in erecting a form for a concrete Wall on a concrete floor slab containing a plurality of reenforcing dowels projecting vertically from the top surface of the slab, a form plate holder comprising a pencil rod having a loop therein for securing said rod to one of said dowels, an angle member having substantially right angularly related base and side portions, said base portion being formed with an opening therethrough, a substantially U-shaped member having opposed leg portions and an integral interconnecting end portion formed with aligned openings adjacent the free ends of said leg portions slideably receiving said rod, said leg portions and connected end portion extending up through said opening in said base portion with said connected end in spaced relation to said base portion, a Wedge mounted between said leg portions and having tapered sides engaging said end and base portions for locking said members to said rod in longitudinally selected position thereon, the side portion of said rst member being formed for positioning against a form plat-e `and being perforated for nailing thereto.

2. For use in erecting a form for a concrete wall on a concete floor slab containing a plurality of re-enforcing dowels projecting vertically from the top surface of the slab, a form plate holder comprising a pencil having a loop therein for securing said rod to one of said dowels, said loop including overlapping portions spaced apart to admit said one of said dowels to said loopwhen said rod is positioned substantially vertically; an angle member having substantially right angularly related base and side portions, said base portion being formed with an opening therethrough, a substantially U-shaped member having opposed leg portions and an integral interconnecting end portion formed with aligned openings adjacent the free ends of said leg portions slideably receiving said rod, said leg portions and connected end portion extending up through said opening in said base portion, a wedge mounted between said leg portions and having tapered sides engaging said end and base portions for locking said members to said rod in longitudinally selected position thereon, the side portion of said i'lrst member being formed for positioning against a form plate and being perforated for nailing thereto.

LEMUEL R. VINES.

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

UNITED STATES PATENTS Number Name Date 871,879 Middleton Nov. 26, 1907 1,597,424 Bennetts Aug. 24, 1926 1,875,366 Beghetti Sept. 6, 1932 2,095,714 Pinaud et al. Oct. 12, 1937 2,099,260 Colt Nov. 16, 1937 2,190,700 Colt Feb. 20, 1940 2,378,850 Hyre June 19, 1945