US1537589A - Strip and rod trussed structure - Google Patents

Description

G. H. DAWSON ET AL STRIP AND ROD TRUSSED STRUCTURE May 12, 1925 1,5375% Filed Oct. 27, 1924 3 Sheeis-Sheet 1 4 gwuvntozd George IYil/GS flail/S0 72 fiarxZ/zal Field Frease 3 EK E p v oeoacwp h QQQQQ h m .URVOQ aw 9.. Y Q, 9 t x W h S 3 H. DAWSON ET AL STRIP AIED ROD TRUSSED STRUCTURE Flled 0c 27 1924 May 12, 1925-,

.G. H. DAWSON ET AL STRIP AND ROD TRUSSED STRUCTURE Filed Oct. 27, 1924 s Sheets-Sheet 5 A VA flea/ye [fives Dawson ifia'rxihal Field Frase Patented May 12, 1925.

UNITED STATES 1,537,539 PATENT OFFICE.

GEORGE HIVES DAWSON, or BOSTON, MASSACHUSETTS, Am) nuaxrrimr. FIELD 1 FREASE, or CANTON, orrro.

S'IIEtIII? AND BOD TRUSSED STRUCTURE.

Application filed October 27, 1924. Serial No. 746,068.

To all whom it may concern:

Be it known that we, GEORGE Hrvns DAW- soN and HURXTHAL FIELD FRnAsn, citizens of the United States, residing at Boston, in

5 the county of Suffolk and State of Massachusetts, and at Canton, in the county of Stark and State of Ohio, respectively, have invented new and useful Improvements in Strip and Rod Trussed Structures, of which the following is a specification.

The invention relates to trussed structures having chord members and web members abutting each other at apexes, and having means securing and locking the truss members together.

Preferably the chord and web members are portions of a continuous strip of material formed according to the disclosure of the prior application of the present inventors, for Letters Patent of the United States, filed November 26, 1923, Serial Number 676,897. The objects of the present improvement are to provide simple mechanical means for fastening the truss members together and replacing a relatively large number of separate apex fastening means otherwise required, the improved mechanical truss fastening means not only securing the truss members together, but cooperating withthe truss members to 3 form a structure of greater strength. and rigidity than may be attained by merely fastening the truss members together t the apexes by rivets, or welding. These structural advantages with coincident production economies are attained by providing apex abutting feet for the chord and web members, said feet registering with.

each other at the apexes, and having registering apertures through which tie rods extend, and aresecured for fastening the truss members together and strengthening the structure.

Several forms of the invention are illustrated in the accompanying drawings fort?- ing part hereof, in which. Figure 1 is anoblique perspective view of a strip and rod trussed element; a

Fig. 2, an oblique perspective view of a trussed structure including a plurality of 0 strip and rod trussed elements;

Fig. 3, an elevation of a strip and rodtrussed structure, the strip being formed in tubular cross-section,

Fig. 4, a cross-section of the same, as on line 4- 1, Fig.3;

Fig. 5, an oblique perspectiveview of a strip and rod trussed structure formed and used as a rectangular beam, and including a plurality of rods; I Fig. 6, an oblique perspectiveview of a strip and rod trussed structure formed and used as a triangular beam with rectangular supporting ends, and including a plurality of rods; I 1

Fig. 7, an oblique perspective view of a tapered strip and rod trussed structure which may be a fence post; 1

Fig. 8, an oblique perspective view of a long tapered strip and plural rod trussed structure embedded in a protective and compression resisting material, and which may be a telephone pole.

Similar numerals refer to similar parts throughout the drawings.

-. In Fig. 1, the trussed structure indicated by T1 includes a trussed element E1 having spaced rows of chord members C1 and end chord members Ole, and connecting web members W1 and end web members W16, preferably formed as shown from a continuous strip, so that the chord and web members alternate with each other in the strip. Between the alternating chord and web members are provided abutting apex feet A1, having registering apertures S1, through which tie rods R1 extend and terminate in end rivet heads H1, as shown, to fasten the truss members together,-and strengthen the complete structure.

In Fig. 2, is illustrated a rectangular trussed structure T2 including four trussed elements E2, each having one row'of chord members C2 and. end chord members 026 g in two cases and another row of chord mem- .bers C2 and'end chord membersG2e in two having registering apertures S2,. and the rows of chord members C2, and C2 and C26, lap over the angled chord members C2, and C2, and C26, of the next element to form --the, cornersof the rectangular structure, as

shown, soth'at the apertures S2 in the apex feet A2 of the chord members of the two 9 elements forming each corner register with 7 each other.

Four tie rods R2 extend through the reglstering apertures at each corner and terminate in end rivet head H2 as shown to fasten the members of the truss elements to gether to form the rectangular trussed strucweb members 3 and end web members W8 preferably made from a continuous tube, so

that the chord and web members alternate wifh each other in the tube. Between the alternating chord and web members, abutting apex feet A3 have been flattened in the tube and provided witlrregistering apertures S3, through which threadedtie rods R3, ex-- tend and terminate in nut heads This modification of strip and rod triissed structure is particularly adapted to aircraft work, and in order further to strengthen the structure, apex nuts H3a may be threaded on the tie rods and tightened on each side of the abutting apex feet.

In Fig. 5, is illustrated a rectangular strip and-rod structure T5, including a wide strip ,trussedelement E5 having spaced rows of chord members C5 and end chord members C5e, and connecting web members W5-and end web members W56, preferably formed as shown from a continuous'strip, so that the chord andweb members alternate with each other in the strip. .Between the alternating provided abutchord and web members are ting apex feet A5 havin aplurality of registering aperturesS5, through which tie rods R5 extend andterminate' in end rivet heads H5, as shown, to fasten the trussmemhers together, and strengthen the complete structure.

. and rod structure T6, having rectangular The structure of Fig. 5, is illustrated as a rectangular beam or joist, and it is obvious that the'plurality of tie rods, increases the torslonalrigidity of the structure.

In Fig. 6, is illustrated a triangular strip supporting ends made of short lengths of structures similar to T5. The structure T6 includes a profiled strip trussed element E6 having one row of wide chord members C6 and end chord members C6e,,and another row of narrowchord members C6, and web members W6 and end web members W6 connecting the rows of chord members, and

being preferably formed as shown from a continuous profiled strip, so that the chord and web members alternate-with each other in the strip. I

Between the alternating chord and Web members are provided abutting apex feet A6 and A6, having registering aperturesv S6. through which tie rods R6 extend and. terminate in rivet heads H6 as shown to fasten the truss members together, and strengthen the complete structure.

I 'In Fig. 7, a tapered trussed structure T7 includes a strip trussed element E7 having converging spaced rows of chord members C7 and end chord members Q76, and connecting web members W7 and end web mem bers W76, preferably formed as shown from a continuous strip, so that the chord and web members alternate with each other in the strip. Between the alternating chord and web members are provided abutting apex feet A7, having registering apertures S7 through which. tie rods R7 extend and terminate in end rivet heads H7 as shown to fasten the truss members together, and

strengthen the complete structure.

Thestructure T7 is adapted among other things, for use as a fence post.

A long tapered plural rod trussed struc- '95 ture T8 is illustrated in Fig. 8, which may be embedded in a compression resisting and. protective material K such as concrete for strengthening the truss and protect ng it against corrosion, thereby providing an efficient trussed structure for use as a telephone pole and the like. 4

As before the trussedstructure T8 1ncludes a trussed element E8 having spaced rows of chord members C8 and end chord 5 members C8e, and connecting web members VVS and WVSe, preferably formed as shown from a continuous strip, so that the chord and web members alternate with each other in the strip. Between the alternating "chord p and web mem )ers are provided abutting apex feet A8, having registering apertures S8, through wnich tie rods R8 .xte-ndand terminate in el d rivet heads H; as shown to fasten the truss members together, and

strengthen the complete structure.

For production economy continuous strip trussed elements as illustrated are preferablefor use in the strip and. rod tru'ssed structures of the present invention, but the strip r20 truss members may be separate pieces eachhaving apertured apex feet at each end.

For most purposes both the strip trussed elements and the tie rods are preferably made of metal, and in 'this connection the designation strip is not intended to be limited to the restricted meaningof strip as applied to steel but to indicate any desired cross section for the truss members.-

Moreover the trussed elements may be made in part or in whole of perforated or expanded metal of any desired type.

We claim: 1 1. A trussed'structure including spaced roWs of chord members and connecting web members, feet on the members abutting each other at apexes, registered apertures 1n the feet, andtie rods extending through the registered apertures for locking and securing the truss members together.

2. A trussed structure including spaced rows of chord members and connecting web members, feet on the members abutting each other at apexes, registered apertures in the feet, and tie rods extending through the registered .apertures and terminating in end heads for locking and sec-uringthe truss members together.

3. A trussed structure including spaced rows of chord members and connecting Web members, feet on the members abutting each other at apexes, registered apertures inthe' "feet, threaded tie rods extending through the registered apertures, and nuts on the tie rods for locking andseouring the truss members together.

4. A trussed structure including spaced rows of chord members and connecting web members,feet on the members abutting each other at apexes, registered apertures in the feet, and a tie rod extending through some of the registered apertures for locking and securing the truss members together.

5. A trussed structure including spaced rows of formed chord members and connecting formedweb members, feet on the members abutting each other at apexes, registered apertures in the feet, and tie rods extending through the registered-apertures forlocking and securing the truss members together.

6. A trussed structure including spaced rows of chord members and connecting web members, feet on the members abutting each other at apexes, a plurality of registered apertures in the feet, and a plurality of tie rods extending through the registered apertures for locking and securing the truss members together.

7. A trussed structure including spaced rows of chord members and connecting web members, feet on the members abutting each other at apexes, a plurality of re istered apertures In one row of the feet, an a P1111 rality of tie rods extending through the registered apertures for locking and securing the truss members together.

8. A trussed structure including converging spaced rows of chord members and con- .necting web members, feet on the members "abutting each other at, apexes, registered apertures in the feet, and tie rods extending through the registered apertures for locking and securing the truss members together.

. 9. A trussed structure including spaced rows of chord members and connecting web members, feet on the members abutting each other at ap'exes, registered apertures in the nating chord and web members in the strip, I

the feet abutting each other at apexes, and there being registered apertures in the feet, and tie rods extendingthrough the registered apertures for locking and securing the truss members together.

11.- A trussed structure including a plurality of trussed elements each having spaced rows of chord members and alternating and connectingweb members made from a continuous strip of material, there being feet be' tween the alternating chord and web mem bers in the strip, the feet abutting each other at apexes, and there being registered apertures in the feet, and tie rods extending through the registered apertures for locking andsecuring the truss members together.

' In testimony that we claim the above, we

have hereunto subscribed our names.

GEORGE HIVES DAWSON. HURXTHAL FIELD FREASE.

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