US1734701A

US1734701A - Method of bridging

Info

Publication number: US1734701A
Application number: US323897A
Authority: US
Inventors: William E White
Original assignee: KALMAN STEEL CO
Current assignee: KALMAN STEEL CO
Priority date: 1928-12-05
Filing date: 1928-12-05
Publication date: 1929-11-05
Anticipated expiration: 1946-11-05

Description

Nov. 5, 1929. w. E. WHITE METHOD oF BRIDGING 2 Sheets-Sheet 2 Filed Dec. 5. 1928 f t fill/.llo

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Patented Nov. 5, 1929 Awriircreiu E. wrt-ITE, onxcirroneo, rrmrneis, Assrsnon'ro nani/IAN Sunni. COMPANY, or cnicseo, immers, e. .oonronerroii or' DELAWARE Application led December 5, 18,28. lSerial No. 2123,83?.V

My invention relates to buildings, and particularly to a method of installing bridging between joists and beams.

An object of my invention is to provide a simple and expeditious method of installing bridging members to produce a resulting structure that will resist both compression and'tension stresses. rlhis has a structural advantage that is not possessed by the forms of bridging at present in use, consisting of wire lacing.

The method will be more readily understood by reference to the accompanying drawings, in which- Fig. 1 is a view of a tension wire such as used by me;

Fig. 2 is a perspective view of one of the attaching hooks;

Fig. 3 is a perspective view of the com* pression strut;

Fig. 4 is a perspective view of the parts following the first steps of installation;

Fig. 5 is a view following a successive step;

Fig. 6 is an enlarged elevation with the beams in section, showing the completed structure Fig. 7 is a perspective view of the complete finished structure;

Fig. 8 is a. side elevation thereof; and

Fig. 9 is a plan view.

At the beginning of the operation it is assumed that the beams or oists A-B which are part of a series', are placed in approximately their correct spaced relation. To assist in placing the beams, I may use a temporary wood spacer 10 indicated in dotted lines in Fig. 4. The parts of my bridging consist of a length 11 of flexible wire preferablyhaving a rebent portion 12 constituting a hook; a hook member shown in Fig. 2 consisting of alength of wire bent into U-shape, the legs 13 of which have their ends 14 rebent to form hooks, and a compression strut 1'5 of channel shape having notches 16 formed in the web of the channel at its ends.

With the joists in the position shown, one or' the hoolrs shown in Fig. 2 is engaged with the hook end of the wire 11 and caused to engage the bottom flange of the j oist B. The

wire extends upwardly and lies on top of the top flange lofthe joist A and a second hook member is placed in' the position shown. At that point, the strut v is placed in the poL sition shown in Fig. 5, that is, with the notch in the lower end engaging the bottom flange of thejoist F closely adjacentto the tension wire', and the upper endv engaging the'top ilange of the ]oist A in a position about 2% inches trom the tension'wire; 'The upper free end of the tensionwiije is then bent bacli ward with a sharpl pull by the operator,thus pulling the .joists into engagement with the ends of the strut in its inclined position, the end of the wire being thereafter bent downward to liX the parts. The strut is, by blows of a hammer or otherwisethen forced into a position parallel with the tension wire.Y This serves to spread the joiststo theirv predetermined spacing, and to place 'the tension member under considerable stress. When the parts have reached the'iinal position, the freev ends,.12, 17 of the tension wire may be bent around the strut to firmly connectthe same. rhe final 'structure is shown in Figs.

7, 8y and 9 from which .it will 'be evident that the bridgingY may be installed in alignment through the width of a floor. y The structure'V is-permanent, places the joists ina fixed position as to both compression and tension stresses and may applied. f

It will be understood, that where trusses are used, in place of solid beams, the tension member may consistof a 'length ofwir'e that passes completely around the `respective flanges andhas its ends twisted.` Also, that other forms :of the strut may be adopted to.-

.gether withinodifications inthe method of applying the same, alll without departure from the spirit of invention..`

llclaim:`vv f 1. The method of installing bridging between beams, which consists in placing a rigid strut between adjacent beams in an inclined position relative to a transverse line between thebeams, then connecting a tension member to the beam flanges and pulling the beamsV toward eachother as 'far as permitted by the strut, and then-driving. the strut into paralbe very'quickly and simply ico lelism with the tension member to spread the beams and thereby place the tension member under greater tension.

2. The method of bridging joists which consists in placing a compression strut in contact with the fianges of adjacent joists in an inclined position relative to its final position, then connecting a tension member between said flange and placing the same under tension, and then forcing the strut into a position parallel with the tension member and thereby placing the tension member under greater tension.

3. The method of bridging joists which consists in placing a compression strut in contact with the fianges of adjacent joists in an inclined position relative to its final position, then connecting a tension member between said flanges and placing the same under tension, then forcing the strut into a position parallel with the tension member and thereby placing the tension member under greater tension, and then bending a free end of the tension member around the strut to connect the same.

4. The method of bridging joists which consists in placing a compression strut in Y contact with the flanges of adjacent joists in an inclined position relative to its final position then connecting a flexible tension member to the upper and lower flanges respectively of adjacent joists and manually pulling the same up tight-ly and twisting an end to fiX the same, and then forcing the strut into final position to fix the spacing of the flanges and to place the tension member under greater tension.

5. The method of bridging joists which signature.

VILLIAM E. WHITE.

consists in placing a compression strut in conl tact with the flanges of adjacent j oists in an inclined position relative to its final position then connecting a flexible tension member to the upper and lower flanges respectively of adjacent joists and manually pulling the same up tightly and twisting an end to fix the same, then forcing the strut into linal position to fiX the spacing of the flanges and to place the tension member under greater tension, and then bending an end of the tension member around the strut.

6. The method of bridging joists which consist in placing between the joists aspacer that will permit the j oists to occupy a position more closely adjacent than the predetermined final position, then connecting a tension member between the respective fianges of the joists and pulling the joists as close together as permitted by said spacer, and then driving a compression strut between the joists to separate the same to a predetermined spacing and to place the tension member under lgreater tension.

7. The method of bridging joists whichV consists in placing between the j oists a spacer that will permit the joists to occupy a posi-