US872127A - Reinforcing means for composite structures. - Google Patents

Description

No. 872,127. PATENTED NOV. 26, 1907/ J. F. HAVEMEYERL REINFORGING MEANS FOR COMPOSITE STRUCTURES.

APPLICATION FILED JULY 20. 1907.

Ina/anion witnesses I M a Mr.

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To all'whom it may concern:

JoHN F. HAVEMEYER, or ARDSLEY-ON-HUDSON, NEW YORK.

REINFORCING MEANS FOR COMPOSITE STRUCTURES.

Be it known that 1, JOHN F. HAVEMEYER, a citizen of the United States, and a resident of Ardsleyon- Hudson, in the count of Westchester and State of New :York, ave invented an Improvement in Reinforcing Meansflfor Composite Structures, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention relates to reinforcing means intended to be embedded in concrete and the like to contribute to the strength of the com posite structure.

The invention consists in improved features of construction whereby reinforcing means may be given the requisite strength, may be conveniently manipulated, and eco nomical in manufacture.

The character of the invention may be best understood by reference to the accomanying drawings, showing three different onus of bar or bond embodying the invention.

In the drawings,Figure 1 is a side elevation of one embodiment of the invention; Figs. 2 and 3, transverse sections thereof on the lines 22 and 33, respectively; Fig. 4,

a side elevation of a second embodiment;

Figs. 5 and 6, transverse sections thereof on the lines 55 and 66, res ectively, of Fig. 4; Fig. 7,a side elevation of a third embodiment; and Figs. 8 and 9, transverse sections thereof on the lines 8-8 and 99, respectively, of Fi 7. Fig. 10 is a detail perspective, somew at reduced in size, of the bar shown in Fig. 4.

Referring to Figs. 1, 2 and 3, a polyhedral bar 10 has, on one or more of its faces, pro

' jections 12, 12 produced by molding, compression, rolling or by any suitable process or means. Said bar is provided also with depressions 11 11 lproduced byany similar or other practicab e processor means. The projections 12, 12 and depressions 11, 11, whether produced simultaneously or by separate, distinct processes or means, are so disposed and proportioned that the bar may remain of substantially uniform cross-sectional area throughout its length, the projections being mere adjuncts to the body, formed without necessary squeezing, twisting, flattening or otherwise distorting the eater part of the material of the bar; and eing inevery case compensated for by one Patented N 0v. 26, 1907.

or more depressions so as to maintain uniformity of cross-sectlon and consequent 11111- formity of tensile strength. Thus the projections may contribute to the uniform strength of the bar, while obviating the wasteful use of material provided merely to form bonding projections, which is substan-.' tially superfluous so far as strength is concerned. Moreover, a bar of the character described may be formed by manipulating only a small proportion of the entire volume of the bar; and consequently the condition of the bar as a whole may be preserved, if desired, substantially unchanged whatever the process, or means, or state of the material employed.

By com arison of Figs. 2 and 3, it will be observed tliat successive cross-sectional areas along the length of the specific bar may be of polygonal form, each section having its sides disposed at an angle to the sides of the next. In this manner, the barmay be given a series of spirally arranged projections without twisting the bar, as, for example, by having projectlons such as 13, 14 and 15, and succeeding projections in the same line, dis osed in a spiral series. At the same time, If desired, a plurality of rojections, as 16, 14 and 17, may be arranged larly transverse plane so that 1n the line where said plane intersects the'inclosin crete the bar will bind the latter at a pdurality of points, as, for example, at the four points shown. Also, a plurality of projections, as 11, 13 and 16, may be disposed in the same lon 'tudinal plane to provide various points 0 engagement between the bar and concrete where said plane intersects the latter.

The construction of the reinforcin means, as, for example, the projections an depressions described, is preferably such that no acute recesses are presented, into which it might be difficult to mold or otherwise appl the concrete or other envelo materla. For example, the surfaces of t he illustrative bars shown in the drawings, including both projections and depressions, present only obtuse surface angles to the surrounding material. They therefore may not only provide for ready application'of concrete or the like but may tend also to wedge themselves into firmer contact therewith in use.

Referring now to Figs. 4, 5 and 6, a bar 18, similar to the bar 10 of Figs. 1, 2 and 3, has somewhat elongated projections 19, 19 and in the same perpendicubody'of th depressions 20, 20 which ma serve-the same p oses and be formedint 6 same manner as those hereinbefore described. The prop bar 25 is shown as cylindrical,

having its material manipulated to form 10-' angular form, r

When this occurs, however,.1t need jections 26 and" depressions 27. As ustrated in Figs. 8 an 9, these alternating depressions and projec ions may give some cross-sectional areas intersecting them an as for example, the form of a square. not materially alter the linear dimensions or areas of the cross-sections since the average radius of the square section shown in Fig. 8 may exactly or approximately equal the radius of an adjacent circular section shown in Fig. 9.

It will be observed in the illustrative embodiment of the invention shown in the drawings that the original shape of the bar may be substantially preserved in spite of the distortions; that is to say, the bar is preferably not laterally extended to any extent whatever, as. by hammering, compressing, squeezing or flattening the body of the bar, so as materially to distort its original shape. This is of advantage for reasons which will appear tel those familiar with the. art; for example, the flexing strength may remain substantlally uniform to resist a force of any d1- rection.

It will be observed in the illustrative ems that adjacent deformations are separate by a surface which is itself separate from either deformation. thus separated more or less, the intervening surface may present a bonding wall or shoulder additional to. those supplied b the deformations themselves. Also, suc separa- 'tion may to a greater or less de ee permit a part ofthe original surface of a fi ar to be preserved a ainst distortion with the resulting increase stress upon the distorted fibers.

. This is of material advantage, since it contributes to rovide avmaximum degree of umfbprmity an reliability in the strength of the It is to be understood that the scope of the arena? F1gs. 7, 8 and 9, the main When pro ections and depressions are .each projection and each' e invention is not essentially limitedto the deconstruction shown; nor is it indis-w tails of pgn'sable that all the features of the invention employed collectively since they may be used to advantage separately. 7

Reinfo' means embodying this invention may be used in forming composite structures in any usual or practicable manner, as by molding concrete about one or more of them. Claims:

1. Areinforcing barof any cross-section having along its length a plurality of groups of deformations, each grou comprising a plurality of compensating epressions and projections arranged transversely of the bar, parts of projections and depressions in a group being separated transversely one from another by surfaces separate from the walls of either a projection or depression.

2. A reinforcing bar of any cross-section having along its length 'a plurality of groups of"'deformations, each group comprising a plurality projecting deformations arranged transversely of the bar, parts of projections and depressions in a group being separated transversely one from another by a portion of the ori 'nal surface of the bar.

3. A reinforcing bar of an cross-section having a plurality .of groups 0 deformations, each group comprising a p urality of compensating depressions and projections arranged thereon and partly separated transversely of p the bar, the pro'ections of adjacent groups being separated y a portion of the original surface of the bar.

4. A reinforcing bar of any cross-section having along its length a 'plurality of groups of deformations, each plurality of compensating depresse jecting deformations arranged transversely of the bar and on adjacent (parts of the bar,

re'ssion being surrounded by the original s ace of the bar.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

JOHN F. HAVEMEYER. Witnesses W. H. Ponon, HARRY L. McGEE.

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