US1611316A - Connected-bar structure - Google Patents

Description

C Dec. v21 1926. Y

H. NAGIN CONNECTED BAR STRUCTURE Filed Jul'y 25. 1925 windows and for other r pressure.

@situated @sa 2l, i923.

HARRY NAGIN, F BROKLYN,

NEW YORK, Ass'GNonmo THE (marmo COMPANY os AMERICA, OF PITTSBURGH, PNNSYLVANIA, CORPORATION 0F PENNSYLVANI.

coNNEc'rED-saa STRUCTURE.

Application filed July 25, 1925. Serial No. 45,964. i'

My invention relates to a new and improved connected bar structure.

One of the objects of my invention is to provide a' structure consisting of a series of longitudinal bars and a series of cross bars, in which the .cross bars are connected to the longitudinal bars in a simple, reliable and eflicient manner. f

Another object of my invention consists i n making a connected bar structure of this type which is useful for gratings in sidewalks or at other points, for protecting purposes, in which the cross bars are very rmly. andreliably connected to thelongltudinal bars without the necessity of using rivets or expanding or enlarging the ends of the cross bars.

Other objects of my invention will be set forth-in the following ings which illustrate a preferred embodiment thereof, it being understood lthat the above general statement of the objects of my invention is intended to generally illustrate the same andl not to limit it in any manner.

Figure 1 is a section on Figure 2.

Figure embodiment of my invention.

Figure 3 'illustratesl another of my invention.

embodiment Figure 4 is a section onv the line 4-4 of` Figure 3.

VFigure 5 is, a perspective view showing one of the cross bars used in connection with the embodiment shown in Figure 3.

Figure 6 illustrates another embodiment of my invention.

In order to make'the embodiment shown in Figures 1 and 2, the longitudinal bars 10 which are made of any' suitable metal are provided with slots `13 'having what may be called vertical 4portions and also having inclined branches. By a. vertical slot is meant one which is perpendicular to the longitudinal edge of the respectivebarlO as my invention is not dependent upon Iany particular position of the longitudinal bars l0.

After the longitudinal bars 10 have been placed in proper relationship, the cross bars 11 which conform to the shapes of the vertical portions or branches of the slots 13 are forced into the slots or recesses 13 with great This pressure may be produced description and draw- 2 is a top view illustrating one by ahydraulic press or by any othersuitable means. his pressure causes the bottoms of the cross bars 11 toenter into and assume the, conguration ofl the inclined inner branches of the slots or recesses y13.

Hence, by this method of manufacture, the cross bars 11are very firmly and reliably connected to the longitudinal bars 10 without the use of any rivets or other fastenin -devices and without the necessity of expan 05 ing or enlarging the inner ends ofthe said cross bars..

In the embodiment shown lin Figures 1 and 2, the cross bars 11 are unslotted. -In the embodiment shown in Figures 3, 4 and. 5, the Ecross bars 11 are provided with slots or recesses 12 which may have any desired 'depth and the longitudinal bars 10 are provided with slots 13 having the same configuration as that previously described.

In this embodiment and as illustrated in Figure 4,-the cross bars 118L are provided. withv tongues 13 which are separated from the main bodies of the respective cross bars 11a by means of cuts or slits, so that the said tongues 13 can be bent to enter the' inclined branches of the slots in the bars 10. In Fig. v5, the tongues 13 are illustrated as being bent outwardly, to show them clearl However, when said tongues 13 are initial y 35 formed, they remain arallel to the bodyv portionsjof` theA crossars 11a. When the longitudinal vbars 10 and the cross-bars 11 are assembled, said bars are caused-to engageby means of the-vertical portions of the slots 13, and the slots 12, and then, when suiiicient pressure is applied, the tongues 13 are caused to enter the inclined portions of slots 13a. In order to clearly illustrate this construction, the tongue 13 associated with 95 the left-hand bar'11 in Fig. 3 has been omitted, but this construction is clearly shown in connection with the right-hand bar 11 in said Fig.' 3. When the longitudinal bars 10 have been interlocked with 100 the cross-bars 11", the tops of thesaid 1ongitudinal bars are -flush with the tops of said cross-bars, as shown in Fig. 4. In the embodiment shown in Figure 6, the structure resembles that previously illustrated in Figure 1, save that the inclined portions of the slots 16 in the longitudinal bars 10 are 'alternately inclined in opposite directions #For example, while I vhave shown the outer' ends of the slots as perpendicular to'the' longitudinal edges of the longitudinal bars,

I it would not be departing from my invencrooked slot.

tion in any manner to incline the said outer ends of the slots to said edges at any desired angle. Similarly, if desired, the slots in the longitudinal bars could be formed or arranged With respect to eachother so that the cross bars could .be connected to the longitudinal bars at any desired angle.

' Thus, if in the. device shown in Figure 2, the slots corresponding -to one of the cross bars would be arranged on a line inclined (but not perpendicular) to the said cross bars,-

then asuitable and suliiciently thin cross bar could be located in said slots, the said cross bar 'contacting with the edges of said slots.

In addition, the inclined inner ends of theslots could have any desired shape or curvature and couldbe composed of several portions relatively inclined to each other. Of course, as amatter of manufacturing convenience it is desirable to use ordinary iiat strips a cross bar having portions located in said recesses, said portions being bent to substantially the same configuration as the recesses,

Vthe portions of the cross'bars intermediate the recesses being integral With the portions located in the recesses for substantially the entire depth of the last-mentioned portions.

2.`As a new article of manufacture, a structure comprising a plurality of girder portions having crooked recesses formed in v the longitudinal edges thereof and a cross bar fittingpinto the recesses, theportions of the cross bar-v which are engaged by` said recesses being integral with the intermediate portions of said cross bar lfor substantially their entire depth and being permanently deformed to fit ythe recesses.

3. As a new article of manufacture, a structure bars having crooked recesses formed in the longitudinal edges thereof, and across bar having portions fitting into said recesses, the portions of the crossv barv intermediate the recesses being `generally flat, the portions lying in the recesses being integral with said intermediate portions-for substantiall)7 their Aentire depth but being crooked to cobar in place.

4. .As` a new article of manufacture, a connected bar structure comprising a plurality of girder bars, each having' a crooked slot of substantially constant Width therein, and a cross bar fitting into the slots, the portions of the cross bar lying between the slots being substantially flat, and the'A portions lying in the slots being deformed to correspond with the slots and lhold the cross comprising a plurality of girder i -operate with the slots and hold thev cross l bar in place,the port-ions lying in the slots being integral with the intermediate poi- 4tions for substantiallyA their entire depth.

In testimony whereof I alix my' signature.

HARRY NAGIN.

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