US848075A

US848075A - Metal nosing for concrete steps and other structures.

Info

Publication number: US848075A
Application number: US29987906A
Authority: US
Inventors: Henry H Wainwright
Original assignee: Individual
Current assignee: Individual
Priority date: 1906-02-07
Filing date: 1906-02-07
Publication date: 1907-03-26
Anticipated expiration: 1924-03-26

Description

N0x 848,075. PATENTED MAR. 26', 1907.

H. H. WAINWRIGHT.

METAL NOSING FOR CONCRETE STEPS AND OTHER STRUCTURES. AYPLIOATION FILED IEB. 7. 1906.

UNITED- sTA r rs I 'rE'N'r oFFIcE.

' HENRY H. WAINWRTGHT, OF PHILADELPHIA, PENNSYLVANIA.

METAL NCSINC FOR CONCRETE STEPS AND OTHER STRUCTURES.

Specification of Letters Patent.

Patented March 26, 1907.

Application filed February 7. 1906. Serial No. 299.879.

ments in Metal Nosings for Concrete Steps and other Structures, of which the following is a specification.

This invention relates to improvements in metal nosings for concrete steps and other structures.

The object of the invention is the protection ,of the exposed portions of concrete str'uctures-such as steps, platforms, and other structures by metal plates, of novel shape, which are termed nosings and are anchored or secured in the concrete by anchoring devices integral with or fixed on the 'body of the plates.

The invention also provides for combining with the nosings strips of rubber, leather, or other non-slipping materials whenever necessary, as in the case of steps, to provide secure foothold, the nosings being provided in such cases with means, as will be: hereinafter described, for securely holding such strips in position.

Since the essentials of the invention can be embodied in various forms, I illustrate several modifications thereof in the accompanying drawings as examples of various structures which embody the invention.

" Referring to the said drawings to aid the descri tion, Figure 1 is a perspective view of a bloc of concrete such as would constitute a platform equipped with one form of the invention. Fig. 2 is a perspective view of part of a flight of steps provided with another form, of the invention equipped with nonslipping strips. Fig. 3 is a perspective view of a single concrete step provided with another form of the invention, and also equipped with non-slipping strips. Fig. 4 is tected from the wear due to ordinary use, as

well as from breakage by the blows of heavy bodies against the concrete by a nosing which isformed of any suitable metahas steel, by rolling or in any other suitable manner. Said nosing comprises the curved corner 1, (which preferably projects somewhat beyond the vertical face of the concrete A, as shown,) the flat body 2, and the anchor 3 4, which is integral with or firmly fastened to said body 2. Said body 2 projects horizontally back from said corner '1 flush with the surface of the concrete mass, and said anchor consists of a web 3 substantially perpendicular to the body 2, which enters into the concrete mass and is preferably provided with a head 4, which forms a locking device.

In the form of nosing shown in Fig. 1 the corner 1 is preferably provided with the downwardly-extending tongue or flange 5, as shown. Said nosing preferably extends the entire length of the exposed face of the concrete, and said web 3 and head 4 is also preferably continuous the entire length of the nosing; but said web or head, one or both, may be interrputed or cut away at various points, and said head 4 may havedifierent shape from that shown. The nosing is temporarily supported in any suitable manner in the mold in which the concrete mass is formed, the soft wet concrete being then poured and rammed in. When the concrete has set, the nosing will be firmly held to the concrete by the rusting between the concrete and the metal, as fully explained in my United States Letters Patent numbered 578,668, dated March 9, 1897, and the secur ity of said nosing in the concrete is further increased by said head 4, which firmly locks said nosing to the concrete mass. In Fig. 2, which shows the preferred form of the invention for steps and like constructions, the metal nosing, which is preferably molded into the concrete mass in the manner hereinbefore described, has a corner 8, which is substantially a semicircle and with beveled edge 14, a broad 'flat rearwardly-extending body or tread 9, and an anchor comprising the substantially perpendicular web 10, which enters the concrete mass, and the double-locking head 11, and I further increasev In Fig. 3 I show a form of nosing for a concrete step or other structure wherein the corner 16 is substantially a quarter-circle, and the tread 17 and anchor 18 19 are respectively similar to corresponding parts in Fig. 1; but the tread17 is provided with undercut grooves for strips of non-slipping material 20.

In Fig. 4 I show a nosing for concrete steps and other structures having a grooved tread 23, provided with non-slipping strips 26 and an anchor 24 25, which are similar respectively to corresponding parts in Fig. 1; but in place of the round corner 1 there is a flat bar or web 22 llush with and protecting the exposed face of the concretelnass I), while the tread 23 protects the exposed upper surface thereof. l

Now, having described my improvements, 1 claim as my invention i l. A nosing for concrete steps and platforms consisting of the following members combined in one integral metal structure, viz. a bo l' -'plate adapted to protect the top of the concrete, a longitudinal corner-bar adapted to protect the top and front of the concrete, a longitudinal web adapted to enter the concrete mass at substantially right angles to said body-plate, and a head thereof adapted to anchor the nosing firmly to the concrete, substantially as described.

A nosing for concrete steps and platforms consisting of the following members j combined in one integral metal structure, viz. a body-plate adapted to protect the upper surface of the concrete and provided with grooves adapted to receive strips of suitable material, a longitudinal corner-bar adapted to protect the top and front of the concrete, a longitudinal web adapted to enter the concrete mass at substantially right angles to said body-plate, and a head thereof adapted to anchor the nosing firmly to the concrete, substantially as described.

3. A nosing for concrete steps and plat forms consisting of the following members combined in one integral metal structure, viz. a body-plate adapted to protect the upper surface of the concrete and provided with grooves adapted to receive strips of suitable material, a longitudinal corner-bar ada ')ted to protect the top and front of the concrete, a longitudinal web adapted to enter the concrete mass at substantially right angles to said body-plate, and a head thereof adapted to anchor the nosing firmly to .the concrete, combined with strips of non-slipping mate- .rial in said grooves of the bmly-plate, substantially as described.

Signed at Philadelphia this 5th day of February, 1906.

HENRY lI. VVAINWRIGIII. \Vitnesses:

J. It. LAMMOT, J. W. KREPPs.