US1919491A - Reenforced column - Google Patents

Description

July 25, 1933. R. WAGGONER REENFORCED COLUMN Fi led Dec. 3, 1929 Patented July 25, 1933 UNITED STATES PATENT OFFICES RALPH WAGGONER, 015 LOS ANGELES, CALIFORNIA, ASSIGNOR TO MARBELITE CORPO- BATION OF AMERICA, OF LOS ANGELES, CALIFORNIA, A CORPORATION OF DELA- WARE I annnroncnn COLUMN Application filed December 3, 1929. Serial No. 411,270.

This invention relates to a construction whereby moulded columns may be thoroughly reenforced. The invention particularly relates to a reenforcing structure adapted to be employed as a skeleton for moulded posts,

columns and the like made from cementitious material, said posts being formed of such material in any suitable manner, as for ex ample, by pouring the plastic material into a mould and vibrating, or by pouring the cementitiousmaterial into a mould and then rotating the same so as to form a core therein. An object of this invention is to provide a particular combination of reenforcing elements which impart great stability and strength to the finished column. V A still further object is to provide a reenforcing column for structural purposes which includes a plurality of longitudinal reenforcing rods maintained in proper spaced relation.

Other objects, uses and advantages of this invention will become apparent from the following detailed description of one preferred form of reenforcing column coming within the scope thereof.

In the appended drawing Fig. 1 is a side elevation of a completed reenforced column. Fig. 2is an end view ofthe column shown in Fig. 1.

Fig. 3 is a transverse section taken through the column along plane 33 indicated in Fig. 1.

Fig. 4 is a transverse section of the column shown in Fig. 1, said section being taken along the plane 44.

As shown in the drawing, the reenforcing column may comprise a plurality of longitudinal reenforcing rods such as the rods 1, 2, and 3 arranged in spaced relation about a longitudinal axis indicated at m-m. The longitudinal reenforcing rods 1, 2, 3 and the like are preferably held together by means 1 of continuous circular connecting members, such as for example the rings 4 and 5, said rings being applied exteriorly of the longitudinal rods 1, 2 and 3 and welded thereto.

Preferably, one of said rings, such as for 5 example, the ring 4, is of smaller diameter It is to be understood that the ring than the ring 5, thereby causing the longi tudinal reenforcing rods 1, 2 and 3 to be inclined to the longitudinal central axis 01-00, the upper ends of the rods, namely, those ends retained by the ring 4, being closer to said axis than the portion of the rods held together by the ring 5.

Intermediate the rings 4and5 the longitudinal rods 1, 2 and 3 and the like, which are preferably equally spaced from each other, aremaintained in positionby means of connecting members such as the rings 6 and 7, said rings preferably fitting inside the longitudinal rods 1, 2 and 3, as indicated in Fig. 4, the rings 6 and 7 being welded to the rods 1, 2 and 3. In this manner the longitudinal reenforcing rods 1, 2' and 3 are prevented from spreading apart by the rings 4 and 5, and are prevented from collapsing towards the central axis m00 by the rings 6 and 7.

In order to furnish an enlarged base for the reenforcing column, the longitudinal rods 1,2 and 3 and the like are preferably bent outwardly away from theaxis a2ac, as indicated by the sections 8 and 9 of the rods 1 and 3, respectively. An internal connecting member such as the ring 10 may be provided, said ringpositively maintaining the rods in their new spaced relation.

The ring5 is preferably positioned at a point along the rods 1, 2 and 3 at which it is desired to bend the rods in increasing their angularity with respect to the central axis 10 is welded or otherwise firmly connected to i the longitudinal rods 1,2 and 3.

The lower ends of the rods .1, 2 and 3 are preferably connected to radially extending feet 11, 12 and 13. Said feet 11, 12 and 13- are preferably in the form of deformed rectangular bars provided with apertures adapted to receive the ends of the longitudinal rods 1, 2 and 3, said rods passing through said apertures as indicated at 14, for example. The feet 11, 12 and 13 are preferably provided with portions lying in a plane at right angles to the axis of symmetry mw, said portions being provided with suitable apertures 15. adapted to receive anchoring members (not shown), used in anchoring the finished column to a suitable foundation.

The feet 11, 12 and 13 and the like are preferably held in spaced relation to each other and to the axis of symmetry 00w by means of a continuous member 16 contacting with the outer faces of the feet. In this manner it will be noticed that the longitudinal. rods 1,2 and 3 are alternately held between outer and inner spacing connecting members, namely, the rings 5, 10 and 16. It has been found that this particular arrangement of elements materially increases the rigidity of the reenforcing column as a unit.

It is to be understood that wherever the word ring has been employed herein as defining the connecting members 4, 5, 6, 7 10 or 16, reference is made to a substantially continuous connecting member, either in the form of a circular ring or in the form of a hexagonal, octagonal or other polygonal member. WVhen a polygon is employed, the number of sides is preferablv the same as the number of longitudinal reenforcing members of the type indicated by the members 1, 2 and 3. In the drawing, there are only four major longitudinal reenforcing rods, but it is readily understood that any suitable number may be employed. Four is the minimum number which gives desirable results.

In order to increase the strength of the reenforcing column, particularly at the lower portions which have a greater cross sectional area and in which the rods are spaced a greater distance from the central axis, additional reenforcing rods may beemployed. For example, rods such as are indicated at 17 and 18, of shorter length than the major longitudinal reenforcing rods 1, 2' and 3 may be positioned between said major reenforcing rods. 7

As shown in the drawing, the auxiliary reenforcing rods 17 and 18 may be of smaller cross section and extend from the internal connecting member 6 over the internal connecting member 7, under the external connecting member- 5, and over the internal con necting member 10. r The ends of said auxil' iary rods 17 and 18 may be connected to the connecting member 16 and preferably exteriorly thereof. Furthermore, it is desirable to weld the rods 17 and 18 to the various connecting members at theirpoints of contact, thereby producing a rigid structure capable of being used and employed as a unit and capable of maintaining its shape even under the great stresses impressed upon such structure when rapidly rotated in a mould filled with a plastic cementitious ma-' terial, during the moulding of the finished column indicated 19. V

The upper ends of the main longitudinal reenforcing rods 1, 2 and 3 may be threaded as indicated at 20, thereby being adapted to receive a capping plate or spider 21 which can be held thereon by means of nuts 22. The construction defined hereinabove presents numerous advantages over the reenforced' columns of the prior art, which genorally comprise loosely held woven structures, the individual portions of which were tied together by means of wire.

Such prior reenforcing columns when subjected to moulding stresses would. easily deform and set up strains which often resulted in cracks developing in the finished moulded column. The welded structure defined hereinabove, however, effectively resists all strains imposed thereon during moulding or centrifugal casting, and for this reason results in a completed post or column which will not crack or check during the subsequent setting of the cementitious material and after the centrifugal force of the moulding operation has been removed. Numerous changes and modifications may be made in the invention, and all such changes and modifications as come within the scope of the appended claims are embraced thereby.

I'claim: p

1. A combined reenforcing column and base for concrete structures,comprising a plurality of long longitudinal reenforcing rods in spaced relation about a longitudinal axis, each bar being substantially completely in a plane passing through said axisbut deformed in said plane to have one end thereof at a greater distance from said axis than the other end, a plurality of continuous circular transverse members welded to said rods at spaced transverse planes along said axis, and a plurality of shorter longitudinal rods in spaced relation about the axis and between said long rods and welded to said transverse members.

2. A combined reenforcing. column .and base for concrete structures, comprising a plurality of long longitudinal reenforcing bars circumferentially spaced about a 1011- gitudinal axis, one end of each of said bars being close to said longitudinal axis while the other end of each of said bars is materially spaced from said longitudinal axis, each of said bars lying substantially in a plane passing through said axis but having a bend formed in each of said bars away from said longitudinal axis, and a plurality of continuous circular transverse members of different diameters in longitudinal spaced planes perpendicular to said longitudinal axis, said transverse members being welded to. said longitudinal bars, one of said continuous circular members being welded to said long barsat said bend.

3. A combined reenforcing column and base for concrete structures, comprising a plurality of long longitudinal rods circumferentially spaced about a longitudinal axis, each of said rods being deformed in a plane passing through said axis, said rods for a continuous transverse members spaced along said longitudinal axis and welded to said.

longitudinal rods, said transverse members being of differing diameter, and a plurality of short rods spaced about said axis and between said longrods and. extending from said footing member plane, said short rods being deformed similarly to said long rods and Welded to some of said transverse members.

RALPH NAGGONER.

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