US1878921A

US1878921A - Anchor

Info

Publication number: US1878921A
Application number: US285281A
Authority: US
Inventors: William E White
Original assignee: KALMAN STEEL CO
Current assignee: KALMAN STEEL CO
Priority date: 1928-06-14
Filing date: 1928-06-14
Publication date: 1932-09-20
Anticipated expiration: 1949-09-20

Description

w. E. WHITE ANCHOR Filed June 14, 1 928 WVM Sept. 20, 1932.

lfl j/ 2 2, l W b 8 Y .J J J Wu. "Z W Patented Sept. 20, 1932 UNITED STATES ATENTOFFICE WILLIAM E. WHITE, OF CHICAGO, ILLINOIS, ASSIGNOB TO KALMAN STEEL COMPANY,

OF CHICAGO, ILLINOIS, A CORPORATION OF DELAWARE ANCHOR.

Application filed June 14, 1928. Serial No. 285,281. v

My invention relates to means for supporting or anchoring walls, ceilings or other elements of a building to concrete columns, ribs or floors.

An object of the invention is to provide simple means for insuring the formation of a properly shaped undercut slot in the concrete. This has been accomplished heretofore by molding a suitable sheet metal member in the concrete and then inserting an anchoring device in the slot for engagement with the undercut portion thereof.

An objection to the slot forming designs heretofore used has been the likelihood of distortion due to hydraulic pressure of the concrete and to superposed weight. The mouth or entrance slot to the anchor-receiving pocket has thus been restricted, making it impossible to insert the anchor after the concrete became hardened. 7

Due to this possibility of distortion of the slot-forming member it has been customary to so design the anchor that there is ample clearance to olfset the restriction of size of the entrance slot. Consequently when the anchors were installed there was considerable play or freedom of movement of the anchor relative to the wall. In the support of some forms of building elements such as outside walls relative to the concrete columns, this is highly objectionable and an object of my invention is to provide a design of slot-forming member that will not be subject to distortion or variation of size of the entrance slot under any expected or normal pressures or weights. To accomplish this result, I construct the slot-forming pocket of rectangular outline and project the side walls that define the entrance slot at right angles therefrom. Furthermore by flaring the outer edges or margins of the slot-forming walls, the weight or pressure imposed on the sheet metal element will tend to open rather than close the slot.

The invention will be more readily understood by reference to the accompanying drawing, in which- Fig. 1 is a sectional view through a concrete rib to which my improved anchoring device 50 has beenapplied; and

Fig. 2 is a perspective view of the section. of a sheet metal-slot-forming member.

The means for providing the undercut slot consists of a length of sheet metal bent to provide a continuous, rectangular pocket having an upper side wall 10,;a lower sidewall 11,'and

end walls

12, 13, all arranged in rectangular form. The mouth or entrance 1 1 to the pocket is in the side wall 11 and walls 15, 16 are projected from the sides of the opening at right angles to the wall 11. The lower margins 17 18 of the walls 15, 16 are oppositely outwardly flared-so that when the device is rested on a form indicated at 19 in dotted lines in Fig. 1, a superposed weight on the sheet metal member will tend to spread the sides rather than compress them. A staple 20 may be used for holding the member in place during the pouring of the concrete.

Numerous forms of anchors may be used, one form being shown in Fig. 1 consisting of a length of wire'doubled on itself to provide an eye 21 having legs 22 arranged in parallelism, the ends 23, 24 of the legs being oppositely bent at right angles. Preferably the thickness of the wire will be such that it fits snugly within the pocket so that there is no possibility of play between the anchor and the pocket or undercut slot. Preferably also the legs 22 will be normally slightly flared requiring compression in order to seat them in the position shown in the drawing.

The anchor is inserted through the continuous slot to a position inwardas far as it will go, then turned 90 degrees to bring the portions 23, 24: into the position of the drawmg.

The peculiar shape of the slot-forming member insures against distortion by hydraulic pressure or superposed weight. It will be seen that any pressure on the sides 15, 16 tending to close the slot will be resisted due to the fact that the outwardly flared margins are resting on the form.

Modifications in form and arrangement, and particularly in the design of the anchor, may be made without departure from the spirit ofcmy invention.

I claim:

1. A device for use in providing an undercut slot in the face of concrete, consisting of a section of sheet metal bent to define a shallow, rectangular space having a side opening and walls projecting laterally from the o edges of the opening, the free edges or margins of the'walls being adapted to contact a form and" being outwardly and oppositely flared.

2. A slot forming member consisting of a 10 length of sheet metal bent toprovide a con-' tinuous shallow spaceythe two side walls being parallel and the two end walls being parallel and arranged at right angles to the side walls; one side wall having an entrance 1 opening and walls extending at'right angles from the side wall that contains the opening and adapted to act as means for defining the entrance slot to the shallow spaceythe margins of these walls being oppositelyflared. 539 In testimony whereof I have aflixe'd my signature. V

WVILLIAM E. :WHITE.