US1674713A - Nonskid metal covering for stair treads, thresholds, and the like - Google Patents

Description

June 26, 1928. 1,674,713

G. w. BROOKS NONSKID METAL COVERING FOR STAIR TREADS, THRESHOLDS, AND THE LIKE Filed March 21, 1927 I N VEN TOR.

A TTORNEY.

Patented June 26, 1928. I i

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.Application fileid March'21, 1927. Serial mime. I

My invention relateslto' non-skid metal covering for stair treads.

Theobject ofmy'inventlon is to provide a nonskid metal covering consisting of" a plate having a plurality; of dove-tailed grooves on the face thereof, the grooves being in close proximit to each other.

A further object 0 my invention is'to provide a non-skid metalcovering that 1s easily bent to conform to the nosingv of the tread having the non-skid feature extending therearound.

A still further object-of my invention is p to provide a nosing for the tread having the dove-tailed grooves on the convex side, and

' means to, attach the nosing to the tread by a member engaging on the face thereof, and means on the nosing to receive the edge of a flexible or rigid facing for the tread.

These and other objects will hereinafter be more fullyexplained.

Referring to the drawings: I Fig.1 is a sectional detailed view ofthe covering applied to a marble stairway.

Fig. 2 is a sectional detailed view showin the covering appliedto a wood stairway.

Tig. 3 is a sectional detailed view of the covering applied tothe nosing of the tread.

The attaching means for the plate .to

wood, marble or metal treads may be done varlous ways, such as uslng dowels, screws or nails (thesaid means not being shown in the drawings).

One of the particular features that I wish to emphasize is that the grooves extend longitudinally with the tread, and being so positioned the metal will bend more easily around the nosing as shown in Figs. 1 and 2. However a 'nosing'may be. prepared as shown in Fig. 3 hereinafter described. The object of dove-tailing the grooves is that the edgesas at 5 are kept sharp by wearing the metal away fromvthe face as at 6, and also being dovetailed is a means that when the sole of the shoe is pressed thereon it will en-' gage tightly between the edges preventing the possibility of slipping. Where the edges occur on the nosing as shown in Figs. 1, 2 and 3, and particularly illustrated in Fig. 3, the edge will cling firmly to the sole of the shoe, should the pedestrian fail to properly reach the tread, that is to say, the toe of the shoe 6 barely engages on the nosing, at a which time the edge will imbed in the sole of the shoe supporting the foot firmly, therefore the edgesb ein placed rendstoe1iminate'serious.jaccidents Whether going upaor,

down thestairs, andthe-possibility of slip ping from the slanting; sides ;of-.:-thresholds{ i's-r eliminated. ,=,j- 1 v. v I

In F 1g. 3 1s shown a segmental plate 7 having dovetailed grooves on the convex side tread 9 of the stair. The said web member is spaced from the upper edge as at A of the snugly to engagement on the plane ofthe web member 8, and also preventing anflout ward movement thereof.

The covering herein described is preferably made of brass for the better appearance, and also that it will bend easily, and the sharp edges of the dovetailed members are not easily broken, however aluminum will A function in a similar way, other' metal may be employed without departing from the spirit of my invention.

Such modifications may be employed to conform to the different uses that the covering may be adapted to.

Having thus described my invention, what I claim as new and desire to secure by Let- I ters Patent is -1. In a non-skid metalcovering for stair treads, a plurality of dove-tailed or undercut grooves extending part way through a metal sheet, said dove-tailed grooves longitudinally ositioned and in close proximity to each 0t er and having a bend on one side of the metal covering to conform to the nosing of a stair tread, whereby the edges of the groove will abruptly protrude, substan: tially as. shown, the edges being kept sharp by the wear imposed thereon.

2. Ina non-skid metal covering for stair treads, a plurality of dove-tailed or undercut grooves extending part way through the metal covering, said dove-tailed grooves lon gitudinally positioned and in close proximity to each other, and being so positioned that' the edges formed by the undercut will be sharpened by wearing of the metal between the edges at the outer surface, for the purpose described.

3. In a non-skid metal covering for stair treads, a plurality of dovetailed or undercut grooves extending part way through the metal covering, said dove-tailed grooves being longitudinally positioned with the covering and in close proximity to each other, the edges automatically sharpened as the metal is worn away between the grooves, a curved portion of the structure of suflicient width to function as a covering for the curvature of a stair tread nosing.

4-. In a non-skid metal covering for stair treads, a plurality of dovetailed or underout grooves extending partway through the metal covering, said dovetailed grooves longitudinally positioned with the covering and in close proximity to each other, the groovesbeing unfilled so that the outer edges formed thereby will function as a grippingineans for the sole of a shoe or other structure compressed thereonythe edges being sharpened by reason of the undercut oi? the groove formation and the wearing ofthe metal from the space between the grooves. V

In testimony whereof I affix my signature.

GEORGE w. BROOKS.

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