US976869A - Fitting for reinforcing-frames. - Google Patents

Description

G. M. GRAHAM. FITTING FOR RBINFORGING FRAMES.

APPLIGATION FILED APR. 21. 1909.

Patented Nov. 29,1910.

2 SHEETSSHBET 1.

G. M. GRAHAM.

FITTING FOB. REINFORGING FRAMES.

APPLICATION FILED APR. 21. 1909.

Patented Nov. 29, 1910.

2 SHEETS-SHEET 2.

' PATENT OFFICE.

GEORGE M. GRAHAM, 0F CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO SUSPENSION STEEL CONCRETE COMPANY, A CORPORATION OF DELAWARE.

FITTING FOR REINFORCING-FRAMES.

Specification of Letters Patent.

Patented Nov. 29, 1910.

Application led April 21, 1909. Serial No. 491,343.

To all Awhom it may concern:

Be it known that I, GEORGE M. GRAHAM, a citizen of the United States of America, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Fittings for Reinforcing-Frames, of which the following is a specification.

This invention relates to the particular form of truss girders or beams for skeleton frames of reinforced concrete structures which forms the subject matter .of my prior Letters Patent No. 889,223, dated June 2, 1908, and No. 919,714, dated April 27, 1909, and has for its object to provide a simple and efficient structural formation of the coupling pieces adapting the same for substantial connection to the frame posts and beams so that a minimum thickness of the concrete portion of the wall, floor, etc., is required to inclose said connecting parts, and which construction also affords a simple, convenient and effective abutment connection for the truss wires of the beams, all as will hereinafter more fully appear.

In the accompanying drawings: Figure 1, is a detail perspectiveview of a corner portion of a reinforcing frame having the present invention applied. Fig. 2, is a detail sectional plan of the same. Fig. 3, is a detail front elevation of one form of the angular coupling piece adapted for the connection of untrussed beams to each other and to the posts. Fig. 4, is a side elevation of the same. Fig. 5, is a detail front elevation of another form of the coupling` piece adapted for connecting trussed beams to eachother and to the posts and providing means for the attachment of the ends of the tension members of the truss formations. Fig. 6, is a side elevation of the same.

Similar' numerals of reference indicate like parts in the different views.

As represented in the drawings the arrangement of the parts will be substantially the same as in my before mentioned Patent No. 889,223, and will involve the usual round corner post or column 1, and round beams or girders 2 connected together and to said post by coupling pieces constructed as follows 3 is a coupling piece above referred to, the respective members of which are in angular relation to each other as shown, and have their outer faces concave to fit the conveXity of a round post or beam as in my aforesaid patented construction.

4 are elongated recesses formed in the opposite or inner faces of the coupling members aforesaid by marginal or border flanges 5 and adapted to receive the heads or nuts of the fastening bolts 6, the Shanks of which pass through orifices in the bottom webs of said recesses and through the post and beam to rigidly connect the parts together. As so constructed a minimum degree of projection of coupling means is provided and in turn entails a corresponding decrease in the thickness of the concrete wall required to properly inclose the parts. As in my former patent construction, pairs of said coupling pieces, arranged on common upper and lower planes, are used in the connection of the ends of adjacent beams to a post of the frame, and in order that the fastening bolts 6, aforesaid, do not interfere with each other a multiple series of bolt holes are formed in each coupling member, aforesaid, in order that the bolts extending O in opposite directions through the parts may be readily arranged in the required staggered or alternated relation as illustrated in Figs. 1 and 2. As so formed the one pattern of coupling piece is capable of use in both instances, and materially aids in the process of erection.

Another part of the present invention involves the formation of a bracket as above described with anchor or attaching means for the ends of the multiple wire or rod tension members of the beam truss described in my prior Letters Patent No. 919,714, dated April 27, 1909, and consists in the enlargement of a coupling piece at the point of intersection of its members, and the formation of an open side orifice 7 in said enlargement to form opposed horns 8 around which the rods or wires 9 of the tension member of a beam truss are looped, as shown. The truss for a beam above referred to will preferably comprise a pair of lateral struts or queen posts 10, arranged in spaced relation, and having end bearing against a round beam 2. At their other ends said queen posts carry bearing shoes 11 to receive the wire or rod tension members 9 of the truss, as described in detail in my former Letters Patent of April 27, 1909.

Having thus fully described my said in- Vention What, I claim as newand desire to secure by Letters Patent, is

l. The combination in a skeleton reinforcing'frame for concrete structures, of a round post,"'a pair of round beams in angular relation and abutting against said post, coupling piecesrthe members of which are in angular relation, each member having a coneaved surface on one side to fit'a post or beam, an elongated recess in the other side formedA by border flanges on the member and a series'o'fv bolt holes in the web of said recess, and a series of fastening bolts passing through said members and entirely through the posts and beams, substantially as set forth. y

2.- The combinationin a skeleton reinforc- S ing frame for concrete structures, of a round post, a pair of round beams inangular relation and abutting against said post, coupling pieeespthe members of which are in angular relation, each member having a coneaved surface on one side to fit a post or beam, an elongated recess in the other side formed by border flanges on the member and a multiple series of b olt holes in the Web of said recess,

and a series of fastening bolts passingthrough said members and entirely through the posts and beams in staggered relation, substantially as set forth.l

3. The combination in a skeleton reinforcing frame for concrete structures, of a round post, a pair of round beams in angular relation and abutting against said post, coupling pieces the members of Which are in angular relation vand -provided with an enlargement attheir point of intersection, the enlargement having an open side orice forming opposed horns, a series of fastening bolts passing through said members and entirely through the posts andbeams, and a lateral truss consisting of intermediate struts and tension members extending from post to post, over said struts, and looped around the horns aforesaid, substantially as set forth.

Signed at Chicago, Illinois, this 12th day of April 1909.

GEORGE M. GRAHAM. Witnesses.:

ROBERT BURNS, L. HOLDEN.

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