US 2046152 A
Description (OCR text may contain errors)
3Q, 1936 G H N STRUCTURAL COLUMN AND BRACKET CAP THEREFOR Filed NOV. 23, 1931 2 Sheets-Sheet l REE J 30, 1936. G, H N 2,@46,Ti52
STRUCTURAL COLUMN AND BRACKET CAP THEREFOR Filed Nov. 23, 1931 2 sheets sheet 2 hyafifar jfzfariz y Patented June 30, 1936 UNHTED STATES PATENT OFFIE STRUCTURAL CGLUMN AND BRACKET CAP THEREFOR 2 Claims.
This invention relates to improvements in structural columns and bracket caps therefor. More especially it has to do with columns of the tubular type and an improved arrangement for interlocking such columns with novel bracket caps.
It is common practice to support cross beams upon tubular columns, the latter being usually reinforced with concrete. The bracket caps most generally used heretofore have comprised a horizontal plate and one or more vertical bracket members. These have been made as separate pieces and then welded to each other and to the column. So far as I am aware the major, if not the only, reliance against relative movement between such caps and columns has depended solely upon the efficacy of the weld between the several members.
It is a principal object of this invention to provide bracket caps which can be conveniently made in one integral piece and to so design and construct this cap and the column upon which it is placed that when fitted together no relative movement between them can occur albeit no weld is made. It is a further object to interlock the cap and columns in a manner which enables the transverse or bending stresses to be applied for the most part to the outer surface of the column wall and to reinforce this wall on the inside opposite to where the external force is applied. Other objects and characteristic features of the invention will become apparent as the description develops.
Several embodiments of the improved bracket caps are shown in the accompanying drawings, in all of which the same principles of interlocking and reinforcing are applied, and it is intended that the patent shall cover by suitable expression in the appended claims whatever features of patentable novelty exist in the invention disclosed.
In the drawings:
Figure 1 is a perspective of a bracket cap adapted for supporting a single cross beam extending on only one side of a column;
Figure 2 is a perspective of the upper end of a column prepared to receive the cap of Figure 1;
Figure 3 is a perspective of the cap and column of Figures 1 and 2 interlocked together;
Figure 4 is an elevation, through the column in section as on line 44 of Figure 3;
Figures 5, 6, and 7 are similar perspectives of a double bracket cap and column adapted to support a single cross beam extending on both sides of the column or separate beams supported on opposite sides of the column;
Figure 8 is a perspective of a column prepared to receive both a double cap like that shown in Figure 5 and another cap to be arranged at right angles thereto;
Figure 9 is a perspective of the other cap referred to in the preceding paragraph;
Figure 10 shows the assembly of the column of Figure 8 with the double cap of Figure 5 and the side cap of Figure 9;
Figure 11 is a perspective of a column prepared to receive a double cap and two side caps;
Figure 12 shows the column of Figure 11 and the caps assembled;
Figure 13 shows a column prepared to receive both the cap of Figure l and the side cap of Figure 9; and
Figure 14 shows the column of Figure 13 with its caps in place.
Referring more particularly to the drawings, the bracket cap 5 of Figure l is completely illustrative of the novel one-piece or integral construction. The cap shown may be cast from malleable steel or made from an ordinary I-beam or what is known in the trade as a Carnegie beam. If formed from such ordinary beams, the flange 2 of the beam is merely cut crosswise, while the Web 3 is cut to provide a tongue portion 4 that fits nicely within a column 5 (see Fig. 4.) and a bracket portion 6 whose lower end engages the outer wall of the column.
Between the lower end of the bracket portion 6 and the tongue 4 is a vertical slot 9 into which the wall of the column nicely fits, as seen clearly in Figure 4. The tongue 4 extends appreciably below the end of the bracket and across the inside of the column. It accordingly acts as a direct reinforcement for the portion of the wall in the bracket slot that is pressed upon by the bracket and, because of its greater depth, distributes the forces transmitted through it so as to eliminate any danger of the column top bending or its side wall buckling.
The column is prepared by forming its top edge I to fit the underside of the flange 2 of the bracket, so that when the latter is placed on the column the top surface of the flange and undisturbed portions of the column edge 1 will be in the same plane. There is also provided in the column a slot 8 of appreciable depth in which a substantial portion of the web may fit. This is important as it materially improves the resistance to the shearing stresses imposed upon the cap. In many columns in use today the top edge of the 'wise displacement whatever.
column'has only to cut throughthe flange plate resting on it but with the novel bracket here described both the flange of the cap and the portion of theweb in the column slot are together resist- 7 ing the shearing "forces applied. The slot 8 of the column andthe slot 9 of the web are so arrangedas to be in vertical alignment when the cap is placed on the column the slots being so proportioned in length that one begins where the other ends ,thus providing a definite interlocking between the cap and column. This interlocking relation isaugrnented by the nice fit of the cap flange 2 in the prepared edge of the column, and a further interlocking is also achieved by the reinforcing tonguell which extends into the column below the slot therein.
When the cap and column are assembled as seen in Figure 3; the next column section may be placed on the flange 2 of the bracket cap, being centered by the usual pin that would extend up- "ward from the hole It). The cross beam to be supported may then be placedalso on the flange, or if the beam-is of greater width than this flange,
an extension plate H (which is suggested by dotted outline) could be secured to the flange and the next column section and the cross beam 'm eunted on this plate.
As is'now evident; the bracket cap-and column are definitely interlocked and no relative movement between them can occur. The interengage ment oi'the web with the top edge of the column,
as well as that between the slot of the column and the web and that between the slot of the web andthe column, prevent any rotative or side- And the engagement between the tongue and bracket end of the web with the inner and outer Walls of the column prevent any tilting or tipping of the cap. Thus a completely interlocked and reinforced junction betweenthe cap and column is affected.
'T'ne cap' of Figure 5 is'a double cap of the type already described, the flange 211 being extended andtwo undercut bracket portions 6a being provided on both ends. The column edge id is prepared as before except that two slots 8a are made diametrically opposite one another. When assembled, as seen in Figure? the bracket portions were on opposite sides of the cchnnn 5a with the tongue 4a inside and the web 2a extend- 7 ing outside at both ends.
The cap and column seen in Figures 8 to 10 inclusive comprise a double cap I .of the type shown in Figure .5 and an offset or' side cap I" shown in Figure 9. This 'has a shortened flange 2b with the characteristic bracket portion Eb and a tongue 4bwhich fits between the inner wall of the column 5b and the tongue 4a of the-double cap I. "The column edge lb is formed as before with an additional slot 811 to accommodate the web 3b. With this assembly'of Figure 10, sepa rate cross beams can be supported on three sides of the colLunn, or one 'beam can extend across the column and another be set' at'right angles thereto. a
Figure 12 shows a second side bracket cap I", like that seen in Figure 9, added to the assemblage of Figure 10. When two such side caps are used the top edge lo of the column'5c is prepared as in Figure 11, there being iour slots 80 in the column and the entire top edge formed to receive the several webs of the caps.
Figures 13 *and'le show a column 5d prepared to receive a cap like that first described, namely that of Figure l, and a side cap I like that of Figure 9. These caps are shown on the column in Figure '14. V p 1 Although the composite caps shown have their vmembers arranged at rightangles to one another,
it isto be understood that other angular relations may :be attained as desired. Moreover, although it is a feature to make the flange; bracket portion and tongue in one integral piece, it is nevertheless possible to use separate pieces welded together without departing from the scope of the invention.
a I claim: 7 V I l. A tubular column and a bracket cap therefor having a flange portion and a depending web portion; the said column being recessed on its upper'edge to receive thelsaid flange and having a a slot in its wall to receive the said web; and the a said web having a slot in which a portion of the columnwall extends and having a tongue extendinfg entirely across the inner space of the column from wall to wall and a bracket porti'ondepending below the slotein the column and engaging the outside of the column wall in alignment with the said tongue. a
2. A tubular column anda bracketcap therefor having a flange portion extending across said column a nd engaging the topedge thereof and having :a web portion comprising a tongue extending into said column entirely ,across'the space between opposite Walls thereof; and another cap adapted to be set at an angle to the first said GEORGE H. DEAN.
cap; each said web portion having a slot to re-