US1355536A - Steel-column footing - Google Patents

Description

W. S. CASKEY. STEEL COLUMN FOOTING. APPLICATION man MAY26,1920.

11,355,536. Patented Oct. 12,1920.

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WILLIAM S. CASIKEY, OF INDIANAPOLIS, INDIANA, ASSIGNOB TO THE NATIONAL DRY KILN COMPANY, OF INDIANAPOLIS, INDIANA, A CORPORATION OF INDIANA.

STEEL-COLUMN ZEOO'JJINGr. I

Specification of Letters Patent.

Patented Oct. 12, 1920.

Application filed May 26, 1920. Serial No. 384,453.

To all whom it may concern Be it known that I, IVILLIAM S. CASKEY, a citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented a new and useful Steel-Column Footing, of which the following is aspecification.

In structural steel work there are many instances where I-beam columns, or similar columns, are provided with a metal footing preliminary to setting the same upon or in a foundation. Heretofore the common practice has been to provide a square steel plate upon the upper face of which are riveted two angle feet having perforated vertical arms between which the post, as, for instance, the web of the I-beam, is placed and bolted.

Such a construction involves not only an accurate punching of the footing plate at the two points, but also the punching of both arms of the angle feet and practically it is exceedingly difficult to proportion the parts with such accuracy that the column or post will be firmly held upon the footing plate.

The object of my present invention is to provide a construction by means of which the column or post and the footing plate may be very firmly associated, at a cost considerably less than has heretofore been possible.

The accompanying drawings illustrate my invention. Figure 1 is a perspective view of the assembled structure; Fig. 2 a vertical section with the parts in position for the reception of the clamping bolt; and Fig. 3 a similar section with the parts assembled.

In the drawings, 10 indicates the footing plate provided with a central rectangular perforation 11. The perforation 11 has a length slightly greater than the width of the vertical arms of the L-shaped clamping members 12 and has a width approximating twice the thickness of said vertical arms plus the thickness of the web of the post 13. The web of the post is perforated at 14 to receive a clamping bolt 15 and the vertical arms of the L-shaped clamping members are perforated at 16 to register with the perforation 14, the perforations 16 being slightly larger than bolt 15. The commercial stock from which the L-shaped clamping members are made comprises arms which gradually increase iii-thickness toward the'point of junction of the two arms, and the perforation 11, and the perforations 14: and 16 are so proportioned and related that in assembly the vertical perforated arms of the L-shaped clamping members being first projected through the perforation 11, must be slightly diverged in order to permit the insertion of the web of the post 13, the perforation 14 coming into registry with perforations 16 and the web of the post 13 coming into contact with the two vertical arms of the L-shaped clamping members, and the lower end of the post resting upon the footing plate 10. Bolt 15' is then passed through the perforations 14: and 16 and the nut 17 screwed tightly home, the vertical arms of the L-sh-aped clamping members swinging upon the adjacent lower corners of the web of the post and thus swinging outwardly tightly into engagement with the adjacent walls of the perforation 11, while the upper ends of the arms are drawn tightly upon the web of the post. The parts are also so proportioned that as the upper ends of the arms of the clamping members swing inwardly, they will draw down upon the bolt 15 and thus draw the post firmly down upon the footing.

It will be noted that by this arrangement only a single rectangular perforation is needed in the footing plate and that the L shaped clamping members need not have their horizontal arms perforated and, as a consequence, all need of riveting the L- shaped members to the footing plate is eliminated and the entire clamping of the parts in place is obtained b the single clamping bolt 15 and its nut 1;.

I claim as my invention:

1. The combination with a structural member of a perforated footing, a pair of L-shaped clamping members projected through the perforation of the footing plate, upon opposite sides of the structural member, and a clamping bolt passing through the projected arms of the L-shapedmembers through the structural member and clamping the several parts together.

2. The combination With a structural member of a perforated footing, an L- shaped clamping member projected through said perforation with one arm alongside the structural member, an opposing abutment associated with the footing member upon that side of the structural member opposite the L-shaped clamping member, and a hundred and twenty.

WILLIAM s. CASKEY. i

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