US729937A - Tension-rod for fireproof construction. - Google Patents

Description

PATENTED JUNE 2, 1903.

J. B, HINGHMAN.

TENSION R OD FOR FIREPROOP CONSTRUCTION.-

APPLICATION IILED FEB. 16, 1903.

1T0 MODEL.

W1 T/VESSE 'r Rs co. mcrroumou wnmworou. av cv UNITED STATES PArENT Patented June 2 1903.

OFFICE.

JAMES B. HINCHMAN, OE DENVER, COLORADO.

SPECIFICATION formingpart o f Letters rates 1%. 729,937, aatea {Tune 2, 1903.

Application filed February 16, 1903. seritiuamat'iv. a. model.) Y

T at whom, it may concern:

Be it known that I, JAMES B. HINCHMAN, a citizen of the United States of America, re: sidingat the cityof Denver, in the county of Denver and State of Colorado, have invented lowingto be a full, clear, and exact description of'the invention and the method'of constructing the same, reference being had to the accompanying drawings; and to the figures of reference marked thereon, which form a part of this specification.

My invention relates to certain new and useful-improvements in tension-rods,'and relates more particularly to that class employed in connection with fireproof construction in general, with especial referencefto fireproof floorings, ceilings, walls, tanks, beams, sewer pipe, curbs and gutters, independent artifi cial stone blocks, culv'erts, bridges, &c., and contemplates a tension-bar which shall be: comparatively inexpensive and present certain advantages which will enhance its value.

in general.

Further objects of the'invention willappearv in the following specification, wherein; more" specific reference to the invention will be;

dwelt upon, though it-might be here noted that a further object resides in the formationof tongues or spurs integral'with the bodyof the bay and struck out therefromfthe ends of these, spurs or lugs being freed from the body portion of the bar, providing an aperture through which the cement or other composition while in a plastic state may flow, and when the composition reaches its hardened state willhave connection-between the mass of the composition on both sides of the bar through the medium of that portion of the composition'which ezitends through the aforesaid opening. v

I Referring to the accompanying drawings, forming a part of this application, and wherein like characters of reference indicate similar parts throughout the several views, Figure 1 is a central sectional view through the ordinary and Well-known form of fireproof flooring and the ceiling, well-known I-beams used in building construction being illustrated in conjunction therewith. Fig. 2 is a latter.

like view in which the plastic composition to any particular; application of the InFig. 1 of the drawings I have illustrated my invention as applied to the ordinary and well-known I-beams used in the construction of fireproof flooring and ceilings. 7o

[vided with struck-out portions which form lugs 3 'and aperture 4:, formed by displacing the metal to form these lugs, these 'lugs befingiof approximately rectangular form and being inclined at such a ;;pitch to the face 5 of the channel-bar as to permit the cement or other composition when in, a plastic state to -readily"find egress through said aperture 4,

thereby forming a key between the cement disposed on opposite facesbf the said bottom 5 of the tension-rod. These lugs maybe formed in any numbers, noli-initation being placed upon the number employed, the latter being optional.

Again referring to Fig. 1 of the drawings, it will be perceived that the ends of the rods more readily permit these, rods tobe secured to the heads of, the I-beams and'to a certain extent precluding: any longitudinal movementof the rods. This,-=however,,does not .2 are formed slightly hook shape, as at- 6, to 0 enter into my invention, "nor d'o'esthe application of the rods "illustrated .in ,this figure for forming a base or foundation for the ceiling, the latter, as at 7, having their ends bent upward and then angularly disposed With relation to the body portion of the rod, so as to more readily conform to the base and web of the I-beam.

It will'further be perceived from Figs. 1 and 2 of. the drawings that the lugs or spurs are disposed in different planes, the lugs or spurs extendingin one plane being in staggered relation to those extending in the opposite plane, and in Fig.4 of the drawings it will be perceived that I form on the rod lugs which are struck out from the bottom of the tensionrod, those to one side of the approximate center of the rod converging toward those struck out from the opposite side of the center of the rod. The disposition of these lugs is optional; the inclination likewise; the number is also, it being essential in all instances to sufficiently raise these spurs or lugs at such distances from the bottom wall of the channel-bar as will permit the cement to readily egress through the space formed by the displacement of these lugs for the purpose of forming a key between the opposing portions of the cement on opposite sides of the said bottom wall 5.

I may also, as illustrated in Fig. 3 of the drawings, enlarge the side flanges of the channel-bar to provide additional strengthening and bracing means in order to more readily permit of the tension-bars assuming a certain proportion of the static pressure of the composition.

Fig. 2 of the drawings illustrates the invention as applied to a wall, in which event it is desirable that all of the lugs incline upward. In Fig. 3 of the drawings I have illustrated my invention as applied to a hollow column, wherein the core 9, as is well known in the art, is temporarily placed in position to form the hollow interior ot the column while the cement is being applied in a plastic state, and which core is subsequently removed after the composition is in a hardened state,

It will be obvious from the foregoing that the essential feature of my invention is the displacement of portions of the metal of which the tension-bar is formed at suitable intervals, this displacement forming lugs which permit of a more firm and secure adherence between the plastic composition and the tension-bar, as well as forming an aperture through which the cement may flow while in a plastic condition, and when in a hardened state that portion of the cement extending within the aperture forming a key between the opposing faces of the plastic body with relation to the tension-bar, and I therefore do not wish to limit myself to any particular form of bar, but reserve the right to alter the structure to the extent of not departing from the spirit and scope of my invention as falls within the appended claims.

Having now fully described my invention, What I claim as new, and desire to secure by Letters Patent, is

1. A tension-rod formed with side flanges, the portion of said rod between said flanges being formed with spurs struck out therefrom, said spurs alternately projecting in opposite directions.

2. A tension-rod formed with side flanges the portion of said rod between said flanges being formed with two series of spurs struck out therefrom, the spurs of one series being inclined in planes opposing the spurs of the other series.

In testimony whereof I have affixed my sig* nature in the presence of two witnesses.

JAMES B. HINGHMAN.

Witnesses:

XV. H. RENTON, F. BARTELs.

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