US3000145A - Truss anchor - Google Patents

Description

Sept. 19, 1961 FINE 3,000,145

TRUSS ANCHOR Filed Oct. 22, 1957 Lou/Is L Finz. IN V EN TOR.

W @244 WQMO ATTORNEY Un ted St t s Pa e .0

3,000,145 TRUSS ANCHOR Louis L. Fine, Miami, Fla, 'assignor to Advance Metal Products, Inc., Miami, Fla., a corporation of Florida Filed Oct. '22, 1957, Ser. No. 691,613 1 Claim. (Cl. 50-466) This invention. relates to truss anchoring means, and more particularly, to a truss anchor of the type employed for rigidlyanchoring trusses, joists, studs, ceiling and roof rafters in a concrete foundation orwall.

In the construction of buildings in which wood beams are employed for supporting floors, ceilings, roofs and any other framework, on a concrete foundation or wall, it has been customary to secure the beams at the respective ends thereof to the concrete foundation. fore, various methods have been employed for securing the beamsto the concretefoundation including the use of beam plates, mudsills, anchors or sockets and by bolting the beam directly to the concrete. The beams are commonly secured to the beam plates and mudsills by toe-nailing, a method which has not been satisfactory for it has failed to produce a joint with the desired strength. Also, the anchor plates which have been employed, heretofore, have not been satisfactory for they are of complex construction, expensive to fabricate and costly to install. The boiling of the beams directly to the concrete is also a costly and inefficient method.

It is therefore the main purpose of the present invention to provide a truss anchor device of the character described which eliminates beam plates or sills and toenailing, and which overcomes all the deficiencies of the truss anchors of the prior art as described hereinabove.

It is further the purpose of the present invention to provide a wood beam anchor device which eliminates expensive treated plate lumber, speeds truss erection and roof framing, provides a greater accuracy on truss placement and a larger bearing area, and which eliminates framing settlement and plaster cracks.

It is also the purpose of the instant invention to provide a joist or truss anchor device which is adjustable, which may be of any length, has a greater efficiency, and which provides a rigid anchorage of the truss in the concrete.

The truss anchor device constructed in accordance with the instant invention comprises a sheet metal channel having opposed upstanding sides for receiving a truss, and an anchor member attached to one of the channel sides for vertical adjustable movement thereby to extend at any length into a concrete structure for anchoring therein.

These and other features of the present invention are described in detail below in connection with the accompanying drawing, wherein like numerals designate like parts, and in which:

FIGURE 1 is an isometric view showing a truss section anchored in a concrete foundation by a truss anchor embodying the present invention;

FIGURE 2 is an isometric view of the truss anchor of FIGURE 1, showing its two main components separated;

FIGURE 3 is an isometric view of the truss anchor of FIGURE 1, showing its two main components in engagement; and

FIGURE 4 is a vertical section, on an enlarged scale, of the truss anchor of FIGURE 1, but shown with anchor fastening means of a modified form, the section being taken substantially along line 4-4 in FIGURE 3.

Referring now in detail to the drawing, the illustrated embodiment of the truss anchor of the present invention is indicated generally by the reference numeral 10, and as shown, comprises a sheet metal channel or saddle 12, having a base plate portion 14, and a pair of upstanding Heretoin. The base plate 14 is,'however, of greater length than the sides 16 forming ears 20 for providing a greater bearing. surface or area. The truss 18 is rigidly fastened to the channel 12 by screws 22 extending through apertures 24 in side walls 16 and cars 20, or in any other suitable manner. a 7

The channel 12 is further provided with anchor engaging or fastening means consisting of a band or strip 26 disposed in laterally spaced parallel relation to the outer side or surface of one of the sides 16 to form a horizontally extending slot 28 to receive an elongated anchor member or strap 30. The band 26 may be attached to the outer side of the side 16 or may be, as shown in the preferred form in the drawing, an integral portion of the side wall 16. The'band 26 may be formed by first cut- ,ting a pair of horizontal parallel slits spaced vertically -apart as much as the desired width of the band 26 and then the band 26 is extrudedoutwardly of the side 16 by the use of a die. a v I As shown in the drawing, the anchor member or strap 30 may be in the form of a bar cut out of a sheet metal stock of suitable width and of any length. The lower end portion of the anchor member or strap 30 adapted to be embedded in a concrete foundation 32, is twisted, 30 as at 34, so as to be further bent to form an angled end portion 36 for extending at right angles to and under reinforcing steel rods, as generally indicated at 38, usually employed in concrete constructions. Also, the angled lower end 36 of the anchor member 30 may be still further bent (not shown) so as to engage or loop substantially around one of the steel rods 38 for greater strength.

The upper portion of the anchor member or strap 30 is adapted to pass freely through the slot 28 between the 40 side wall 16 and the band 26 to be loosely held or fastened thereby, and to extend in abutting relation above the truss 18. The anchor member 30 is further bent at an upper end portion to form a hook-like end 40 for engaging aud holding down the truss 18 as shown in FIG- URE l. The hook-like end 40 may be prefabricated or be formed at the field. The truss 18 may also be fastened to the anchor member 30 by screws, as indicated at 42, passing through apertures 44 provided in the side of the anchor member 30.

In FIGURE 4, there is shown the truss anchor 10 provided with anchor engaging or fastening means of a modified form for a vertically adjustable engagement of the anchor member or strap 30 with the channel or saddle member 12. The anchor member or strap 30 is also formed with a horizontally vertically extending slot 46 through which extends a metal fastener 48, such as a rivet. The rivet 48 also extends through an aperture 50 provided in one of the channel sides 16 and has its stem end extending from the inner side of the channel side 16, 0 flattened, as is a common practice, so as to be loosely retained thereon. In this manner, the anchor member or strap 30 may be adjusted vertically with respect to the channel 12 within the limits of the slot 46, the width of which is less than the head of the rivet 48, thereby preventing disengagement of the anchor member or strap 30 from the channel 12. The anchor member or strap 30 may then be extended at any length above or below the channel 12 so as to be vertically partially embedded in the concrete construction 32. It will be obvious that after the concrete has hardened, it will shrink and settle due to the evaporation of the water therein. The saddle 12 then can move downward- 1y because of the provision of the slot 46 in strap 30, which permits rivet 48 to slide in slot 46, this movement permitting the saddle 12 to bear directly on the concrete beam. After this, the strap and saddle can be secured to the beam by nailing or the' like. Thus the beam is securely fastened to the concrete after settling of the concrete.

The channel member or, saddle 12 maybe provided with the band 26 on one of the sides 16 and the hole 50 in the other of the sides 16 for employing either of the forms of the adjustable fastening arrangement of the anchor member or strap '30 which is also provided with the slot 46.

It is readily seen from the foregoing description that the anchor member or strap 30 adjustably engaging the channel 12 by either form of the anchor fastening means may be positioned at any length into the concrete wall 32, thereby providing a rigid anchorage of the truss 18 in the concrete wall 32.

The present invention has been described in detail above for purposes of illustrations only and is not intended to be limited by this description or otherwise except as defined in the appended claim.

What I claim is:

An anchoring device forranchoring roof elements to the concrete continuous top beam of concrete block structures wherein the said concrete beam is poured in place between form-constituting side members; said anchoring device comprising an elongated upright strap having a lower bent portion adapted to be positioned in the concrete and having an upper end portion of a length suficient to permit its attachment to a rafter or beam, a saddle in the form of an upwardly facing channel-like member of moisture proof material comprising a bottom and upstanding side walls, connecting means between one 4 of said side walls and the said strap holding the saddle and strap against separation while permitting rotational movement of the saddle with respect to said strap, where by to permit the saddle to extend across and to bear upon the top of the poured concrete beam, extended end portions on said saddle adapted to rest upon the top edges of said form-constituting side members, the distance between the said walls of the saddle being 'such as to receive the lower edge portion of a roof beam to position said roof beam and to hold it against movement away from the said strap, said connecting means comprising a rivet firmly secured to 'a side wall of said channel-like member, and said upright strap having an elongated slot extending longitudinally of said strap intermediate the ends thereof, said rivet extending loosely into said slot and headed over to permanently connect said saddle and said strap, said loose connection and said slot permitting vertical adjustment of said saddle whereby said saddle will at all times completely rest on saidtconcrete top beam with a full bearing area.

References Cited in the file of this patent UNITED STATES PATENTS 1,657,441 Huovinen Ian. 24, 1928 1,942,863 Johnstone Ian. 9, 1934 2,153,672 Mills Apr. 11, 1939 2,275,109 McGee Mar. 3, 1942 2,947,119 Puckett Aug. 2, 1960 FOREIGN PATENTS 103,929 Australia 1938 1,100,210 France 1955 185,976 Austria 1956

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