US2065256A - Arch rib roof truss - Google Patents

Description

Dec. 22, 1936. w. E. WILSON l 4 ARCH RIB ROOF TRUSS Filed sept. 28, 19:51

Patented Dec. 22, 1936 UNITED STATI-3s PATENT OFFICE ARCH RIB ROOF TRUSS Winfred E. Wilson, Los Angeles, Calif.

Application September 28, 1931, Serial No. 565,567 4o1aims. (ci. 10s-2s) My invention relates to building constructions, and more particularly to a combined arch rib roof structure and truss whereby a simple, inexpensive construction, and at the same time one of maximum strength and rigidity is obtained, and which involves a structure which may be quickly assembled and disassembled,` and is adapted to span spaces of varying size, without alteration, except that parts may be added or removed from said structure.

It accordingly is an object of my invention to provide a novel form of roof structure comprising a plural part arch rib construction, having means whereby the parts may be held in secured and detachable relation, said rib having associated therewith an improved truss structure, the ends of which, and of said rib being adapted to be anchored by a suitable means Within the walls of the building with which said structure is associated.

It is also Within the province of my invention to provide a novel end assembly or brick Wall seat for my arch rib roof truss including tapered end pieces, and, if desired, an angular reinforcing means, associated with the ends of said truss, and in secured and detachable relation therewith by through means, such as suitable bolts.

The above and further objects and advantages of my invention, as will hereinafter more fully appear, I attain by the construction described in the specification, and illustrated in preferred form on the drawing, forming a part of my application.

Reference is had to the accompanying drawing, in which similar reference characters denote similar parts. In the drawing,

Fig. 1 is a front elevational view of my invention as associated with a building,

Fig. 2 is an enlarged, fragmentary front elevational view of the end assembly of truss seat, illustrating how said assembly may be associated with and anchored in and to the walls of a building,

Fig. 3 is an enlarged cross sectional view, taken on the line 3 3, Fig. 1, through the bolt head, the bolt being invisible, part of the lattice work being omitted,

Fig. 3A is a side view of Fig. 3,

Fig. 4 is a similar view, taken on the line 4 4, Fig. 2, and

Fig. 5 is a perspective view of the angular reinforcing member.

Describing my invention more in detail, in its broader aspects said invention comprises a novel form of building construction composed of a plurality of parts or units, preferably of standard and interchangeable structure, which may be held together in secured and detachable relation at various points by suitable means, forming an arch rib structure, with which in any preferred 5 way may be associated a suitable truss construction, said rib and truss being adapted to support, in spaced relation therewith by any preferred means, a roof sheathing.

It is also within the province of my invention 10 to provide a novel end assembly for the arch rib and truss structure, of standard parts, whereby the ends of said structure may be anchored to and in the walls of a building.

More specifically, my invention comprises an 15 arch rib, designated generally by the reference numeral 2, said rib comprising a plurality of members or units 4, each of which is preferably provided with an arcuate top, a straight bottom and radial cut ends, and which units or members are adapted to be placed in end to end and overlapping relation, and secured in detachable relation by a suitable means such as a sleeve or strap device 6 (Fig. 3, more particularly), the ends of which sleeve or strap are secured to 25 said overlapped units or members by a suitable means, such as the through bolts 8. It will be apparent that the units or members 4 may be multiplied both longitudinally and laterally, as in practice preferred or needed, depending upon the space to be spanned and upon the strength and rigidity desired.

If preferred, the longitudinal length of the rib 2 may be provided with a cap piece I0, secured by the nut bolt and washer construction l2 passing through the sleeve 6. See Fig. 3, more particularly.

Positioned above the rib 2 is a sheathing I4, which is held in spaced relation with said rib by any suitable means, such as the rafters I6, and the end joists I8, which joists provide a firm structure, and also reduce the number of bricks used in brick buildings, since said joists take the place of bricks which would otherwise have to be used above the truss 20; and to increase the strength and rigidity of the structure, a suitable truss or lattice construction 20 may be provided, which construction may comprise a tie beam structure 22 of any preferred number of parts, and which may be held together by suitable plates 24, the king posts 26 and struts 28 being associated with the rib 2 and the tie beam construction 22 in any Way in practice preferred.

This construction, it will be noted, not only provides for speedy assembly and disassembly,

but also aiords a maximum strength and rigidity, together with economy in material and minimum expense.

If desired, also, I may provide a novel end assembly for the combined rib and truss construction, shown more particularly in Figs. 2 and 4, and Which is especially useful in anchoring the roof structure in the walls of a building.

For this purpose the preferably brick Walls 30 are provided with cavities 32 With bed plates 4l for the receipt of said ends, and the end pieces or units 3d are tapered by being reduced both at the top and bottom of said end pieces or units toward the ends of said assembly, as indicated by the numeral 36, suitable angular members 31, having plates 38, being provided, which plates are alternately associated with the tie beam construction 22, the assemblybeing held in secured and detachable relation by a suitable means, such as the through bolt and Washer construction 4B. Where desired a suitable bed plate 32 may be used to distribute the bearing on the wall.

If desired, also, an additional anchoring means may be provided, such as a suitable steel anchoring rod or member d2, the end i4 of which may be embedded Within the Walls 343, While the end Mi may be secured in any preferred Way to the rib 2. See Fig. 2.

In accordance with the provisions of the patent statutes, I have described the principle of operation of myvinvention together With the apparatus which I now consider to represent the bestl embodiment thereof; but I desire to have it understood that the apparatus shown is only illustrative, and that the invention can be carried out by other means.

I claim as my invention:

1. In an apparatus of the class described, ari end construction for a truss structure including arch units and a cap member, said construction comprising end pieces, an angular member embracing said end pieces, said cap member, and said units, a pair of tie beams positioned cxternally of said angular member, and means eX- tending through said tie beams, said angular member and said units for holding said units, said tie beams and said angular member in secured relation.

2. A truss comprising in combination a curved upper chord or rib, a plural part lower chord or tie-beam, the ends of which lie outside of the sides of said arch rib, angular end shoes placed between the ends of the tie beam and the arch rib, and securing devices extending between said tie beam, shoes, and arch rib.

3. In an apparatus of the class described, an end construction for a truss structure comprising the end piece of an upper chord, a pair of tie beams at the sides of said end piece, an angular member having its ends embracing the ends of said end piece and its side portions positioned between said tie beams and end piece, and nut and bolt assemblies extending through said tie beams, side portions and end pieces.

4. In an apparatus of the class described, an end structure for a truss comprising arch units, a cap member, a pair of tie beams at the sides of said arch units, an angular member having its end embracing the ends of said arch units, and its sides positioned between said tie beams and arch units, said cap member extending down- Wardly and Within the end and side portions of said angular member.

WINFRED E. WILSON.

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