US979776A - Reinforced structure. - Google Patents

Description

Patented Dec.27,1910.

D. B. LUTEN.

. REINFORGBD STRUCTURE. APPLICATION FILED JULY 23, 1904.

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DANIEL B..LUTEN, 0F INDIANAPOLIS, INDIANA..

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979,776.. y Original application iled May 17, 1902,

particularly, although not exclusively, de-

signed for such members when used asparts of buildings, bridges, sewers, etc., which arecoinmonly constructed of concrete, stone, brick, cement, mortar, and othermaterials.; and the invention has for its general object .to provide an improved lstructural member .of the class and for the purposes above mentioned characterized by greater strength and durability and capacity to resist the various strains to which it may be subjected in any and all directions, together with greater economy-iii respect to cost of materials and construction as vcompared with similar structures at present in use.

To these and other ends my invention consists in general iii a wall, column or beam with beam structures of concrete and gen'- structure principally characterized by the incorporation therein of tension or reinforcing members so disposed as to bond the structure against breakage in all directions' in which it may be subjected to strains.

The presentapplication constitutes a division of an application filed by me on the 17th day of May, 1902, Serial No. 107,812.' As above stated, my invention has to do orally similar materials; and contemplates the strengthening-and reintorcement of such structures in a. comparatively sim le and inexpensive. manner by embedding therein a series of tension or reinforcing rods so disposed as to resist strains existing in the direction of any or all of the dimensions of the structurel In the accompanying drawing I have illustrated several strucl tural members thus equipped with tension members disposed in a variety of relations to secure effective resistance to disru tive strains occurring longitudinally, crosswise specification cf Letters Patent.'

Patented Dec'. 27, 1.910.

Serial No..107,812. Divided and .this .application led July 23, 1904. Serial No.217,767.

and widthwise of the member; and referring thereto,-'

Figure 1shows a structure composed of vertical' and horizontal members provided with tension rods disposed in accordance with the principles-of my invention; Fig. 2 is a vertical sectional view of a simLlar structure on the line 2 2 of Fig. 1, illustrating a variety of arrangementsof the tension or reinforcing rods; Fig. 3 is a horizonta`lsectional view on the line 3-3 of eferrirfg to the' drawings, Fig. 1, shows a floor or beam `12 supported on a wall or columns 10, and having Aembedded near its upper surface the compression members 19 and near its lower surface the tension members 20. Near the upper and lower surfaces of the beam, or the like, are embedded also shearin' members each of which comprises a horizon yal central portion 21, with inclined -arm's extending outwardly across the floor or beam 'or the like,zfrom opposite ends of the central portion 21, and horizontal parts 23 extending` outwardly from'the ends of said inclined arms and extendingover the columns 10, or down the opposite face of the column as at 26. The upward extension of the shearing members away from the lower tension member results in a tension chord in the loweredgeof the beam, of decreasing section towaifgl theends of the beam, as is desirable` forefticiency since the tension in -the lower edge is a maximum near the middle and decreases toward the supports'.

It is to be noted that because of the dier- .ence in length of the central portions 21,

and the end portions 23, the arms of one shearing member cross the beam or the like, at a di'ere'nt point longitudinally from those of another shearing member, resulting in a bonding of the-materialthrough the diagonal shearing regions by membersV that alternate with one another in-their points 'of crossingthe beam. The same result is accomplished by shifting one shearing member longitudinally past the other longitudinally of the beam.

My. invention consists of a beam reinforced with tension members near the lower surface, and combined/tension and diagonalv shear-members arranged to alternate, with one another m their points '/of" crossing the beam, together with a compression 4member .thc span. Thus the upper surface of`| the i dle o From the 'foregoing description it will be members, after'crossing to the upper sur-'i forcedl with tension members which have .vention are apparent' to those skilled in the inclined parts extending outwardly from opnear thev upper surfaceof the beam as requlred 1n some cases. The diagonal shear face of the beam, followthat surface closely for a considerable distance each side 'of the support, reinforcing the upper surface' ofA the beam for approximately one-fourth of beamv continuous over the support, is .reindiagonal members across the beam at alternatinfg points, in the same way that the mid- `the beam is reinforced below.

seen that the improvements herein described will be `thoroughly efficient in securing the objects designed; and while other forms or other methods all within the spirit of the inposite' ends of thecentral' part and hori zontal parts extending outwardly from the ends of said inclined parts, the central norizontal 'part of the lower shearing rod being longer than thatof the upper shearing rod,

and the horizontal ends of the upper shear- I ing rod being longer than those of the lower shearing rod, substantially as set forth.

2. A reinforcement for concrete beams, girders, etc., comprising an upper compression rod,'a lower horizontal tension rod, and upper and lower shearing rods, each having 'a central horizontal part, inclined parts eX- tending outwardly from opposite ends of the central part and horizontal parts extending outwardly from the ends of said inclined parts, the horizontal part of the lower shearing rod being longer than that of the upper shearing rod, and the horizontal ends of the upper shearing rod being longer than those of the lower tially as set forth.

Signed by me at Indianapolis, county of Marion and'State of Indiana, in the presence of two witnesses.

DANIEL B. LUTEN.

shearing rod,l substan- Vitnesses B. RINEHART, A. C. BROWN.

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