US1662769A - Interlocking joint for metallic frames - Google Patents

Description

March 13, I928.

W. WAIT INTERLOCKING JOINT FOR METALLIC FRAMES 2 Sheets-Sheet 1 Filed March 31. 1927 h/et/ey ATTORNEY I o I O 4 klvvswon QM, j.

W. WAIT INTERLOCKING JOIN: FOR METALLIC FRAMES March 13, 1928,

Filed March 31. 1927 2 Sheets-Sheet 2 INVENTOR. Ms/e/ l/m' BY (J.

ATTORNEY Patented Mar. 13, 1928.

UNITED STATES PATENT OFFICE.

WESLEY Warner NEWBURGH, NEW YORK.

INT ERLOCKING JOINT FOR METALLIC FRAMES.

Application filed March 31,1927. 7 Serial No. 180,013.

ordinarily joined together by bolting and riveting. In the employment of such methods much trouble has been experienced, owing to the difliculty in obtaining a uniform setting of bolts and even clinching of the rivets. Where the bolts are not uniformly set up, or the rivets are unevenly clinched, so that the stress of the load is carried by only a few of them, then there is a tendency to shear these few bolts to the detriment of the joint. Furthermore, when a joint is formed by bolts or rivets, it is difficult to. determine by inspection whether the joint is faulty or not.

The principal object of the instant invention is to avoid the use of bolts and rivets and to provide a joint by shaping the ends of the columns and girders so that they can be joined in an interlock to form the joint. The ends of frame units are shaped to conform with predetermined patterns designed for ready engagement and even distribution of the load stress between the engaged parts. The cutting and shaping of the frame members to provide the interlocking joint can be done at a central place equipped with machinery for quantity production to be furnished as stock material. In forming the joint it is only necessary to positionthe members in interlocking relation. This is a particular advantage where the joint is made in a restricted spacea mine tunnel, for an instancecramping the use of riveting machines and bolting implements. After a joint has been formed all its parts are exposed for inspection so that faulty work can be readily detected.

The interlocking joint for carrying out the foregoing advantages consists in the novel construction, combination and arrangement of parts hereinafter described, pointed out in the appended claims and illustrated by the accompanying drawings.

In the accompanying drawings, in which similar reference characters designate corresponding parts:

Figure 1 is a cross-sectional view, on the line-1-1 of Fig. 2, of. a pinch-frame for mine tunnels.

Figure 2 is a side elevation of the same. Figure 3 is a detail perspective of a saddle forming a part of the joint.

Figures 4, 5 and 6 are detail perspective views, respectively, showing ends of longitudinal and transverse girders and of a column shaped to form the joint.

Figure 7 is a detail sectional view on the line 7-7 of Fig. 1 the chair being shown in full lines.

While the invention is particularly shown and described as being applied to pinchframes for mine tunnels, yet it is obvious that the joint can be employed in other heavy framework construction.

- Referring to the drawings in detail, 10 designates the columns, 11 the longitudinal floor girders, 12 the upper longitudinal girders and 13 upper cross girders of a generally rectangular frame particularly adapted to tunnel reinforcement. The joint between the lower ends of the columns 10 and the longitudinal floor girders 11 is the same as the joint'disclosed in my former Patent 1,226,574, of March4, 1919, except that a chair 14 is interposed between the crown of each girder and the web of the column seated onthe girder.

The joints at the corners of the frame between the columns, and the upper longitudinal and cross girders are the same, and a description of one will suflice for all. The web 15. of the column 10 (Fig. 6) is completely cut away at the upper part between the flanged sides 16 to form the upper transverse abut-ment 17 at the remaining upper edge of the web. In the upper parts of the opposite flanged sides 16 are the vertical slots 18 extending from the seat 17 through the ends of sides, the width of the slots bemg the same as the thickness of the web and the inner ends of the. seats being coincident with the upper abutment 17. In the upper part of the web 15 is the median longitudinal slot '19 extending through the seat or abutment 17. The web atthe inner end of slot provides a lower transverseseat or abutment 19'. i

The end of the longitudinal girder 12 (Fig. 5) forming part of the joint is shaped to fit the upper part of the column 10. The upper and lower flanged sides 20 of the girder are notched, as at 21, in both edges on the chair 1a seated in the lower end of the slot 19. The end of the girder engaging Opposite sides of the web 15 of the column holds the girder against longitudinal dis placement with relation to the column, Also engagement oi the under side of the girder with the chair 1% seated on the web of the column prevents downward displacement of the girder. i

The endof the transverse girder 13 (Fig. 4E) forming another part of the joint is shaped to fit the upper part of the column 10 above the longitudinal girder 1.2. The opposite edges of the upper and lower flanged sidesof the transverse girder, adJacentto the end, are notched, as at 22, to admit the flanged sides 16 of the column.

Fitted in place, the web 23 of the transverse girder fits the slots 18 in the opposite flanged sides of the column and the lower flanged side of the girderrests on the top of the longitudinal girder 12 and also on the abutment 17 at the upper end of the web 15 of the column. The flanged sides 16 of the column extend through the slots 22 in the opposite flanges of the upper and lower sides of the transverse girder. By this engagement of thetransverse girder and the column, the two are firmly locked together against relative lateral movement and the girder is held against longitudinal and vertical movement with respect to the column. The chair 14 (Fig. 8) seated between each end abutting the upper and lower longitudinal girders comprises a bearing plate 2 1 to contactw'ith the girder and a web 25 notched at 26 to fit over the transverse edge of the web of the column. In the opposite edges of the bearing plate are the notches 27 to lit the vertical edges of the column web. The chair is seated in the colummin the slot 19, Fig. 6,'for an instance, with the vertical edges of the slot extending through the notches 27 and thenotched web 25 of the chair straddling the web of the column at the inner end of the slot 19. The chair serves to distribute theloadbetween the girder and the transverse abutment formed on the edge of the column web.

What I claim is: i 1. The combination of a column having a web and flanged sides at each edge of the web, with girders interlocked with the c0 1 umn, said column atthe interlock having its web cut away between the flanged sides to form an upper transverse abutment, the web also having a median longitudinal slot to form a lower transverse abutment, one of the girders being seated on the lower abutment. and the other girder being seated on the upper abutment.

2. The combination of a webbed column with girders angularly disposed to each other and interlocked with the column, one of said girders being imposed on the other, said column at the interlock having its web cutawayto form inner and outer abutments, the lower girder being seated on the inner abutment and the upper girder being seated on the outer abutment.

3. The combination of a column having a web and flanged sides at each edgeof the web, with webbed girders having flanged sides, said column having its web cut away to form inner and outer abutments, the flanged sides of the column having 1ongitudinal slots extending outward from the outer abutment, said girders being angularly disposed to each other with one disposed on the other, the lower girder being seated on the inner transverse abutment *and the upper girder seated on the upper transverse abutment, the web of the upper girder registering with the longitudinal slots in the flanged sides of the column, and the flanged sides of both girders being notched and slotted to admit theflangedsides of the column. a

4. The combination of a column with longitudinal and transverse girders interlocked with the column, the column andboth girders being formed each with a web and flanges on both sidesat each edge of the web said column at theinterlock havingits web cut away between the ends-of the flanged sides to provlde an upper transverse abutment at the end of the web inset fromthe extremities of the flanged sides, the web of the column having a median longitudinal slot extending through the upper transverse abutment and providing a lower transverse abutment in the web at the lower end} of the slot, and the flanged sides of the 001 umn having median loi'igitudinal} slots tending through their ends to the upper transverse abutment; said longitudinal gird- .er at the interlock extending between the flanged sides of the columnwith its web registering with the median longitudinal slot in the column web, the web of the longitudinal girder beingseated on the lower transverse abutment of thejcolumnweb; and sald transverse girder at the interlock being imposed on the longitudinal girder and the outer transverse abutment and having its web registering with the,longitudinalslots in the flanged sides, the flanges of the girders being notched to admit the flanged sides of the column. 1

In testimony whereof I aflix my signature.

WESLEY lVAIT.

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