US884493A - Stair-tread. - Google Patents

Stair-tread. Download PDF

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Publication number
US884493A
US884493A US39101407A US1907391014A US884493A US 884493 A US884493 A US 884493A US 39101407 A US39101407 A US 39101407A US 1907391014 A US1907391014 A US 1907391014A US 884493 A US884493 A US 884493A
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United States
Prior art keywords
ribs
tread
stair
buttons
web
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Expired - Lifetime
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US39101407A
Inventor
Julius Kahn
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Individual
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Priority to US39101407A priority Critical patent/US884493A/en
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Publication of US884493A publication Critical patent/US884493A/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
    • E04F11/02—Stairways; Layouts thereof
    • E04F11/104—Treads
    • E04F11/16—Surfaces thereof; Protecting means for edges or corners thereof

Definitions

  • My invention consists in a ribbed metal plate, preferably of rolled steel, the ribs bemg sharp and provided with properly spaced buttons or knobs.
  • Figure 1 is a perspective view of a stair tread.
  • -F' 2 is a section of stair tread with a modi ed form of rib.
  • Fig. 3 is a view of another form of rib.
  • 4 is a cross section of rib showin% the soft lead button or knob in position.
  • imilar reference characters refer to like parts throu bout the several views.
  • the trea shown in Fig. l is formed with parallel ribs 1 connected by a web 2.
  • the ribs 1 are triangular with straight sides and between these ribs are beads or ridges 3 which render the treads easier to clean.
  • Buttons or knobs 4 properly 8 aced along the tops of the ribs I prevent t e feet from slipping sidewise along the ribs, while the ribs prevent transverse slipping. As the buttons are larger in area than the ribs next Specification of Letters Patent.
  • buttons will wear more slowly, and until they are worn down to where they are no wider than the ribs, will always pro- Ject.
  • Fig. 2 I have shown a web 5, ribs 6 having concave sides, and buttons 7 on the ribs.
  • the rib 8 in Fig. 3 has convex sides.
  • buttons of the same metal as the remainder of the tread may form them of lead or other soft metal.
  • the ribs 10 are formed with roperly spaced holes and the plugs 11 0 soft metal are forced into them.
  • the form and size of the ribs and the spacing of the buttons can be varied as desired.
  • a rolled steel stair tread comprising a web and parallel ribs on the web, ant buttons or knobs on the ribs.
  • a metal stair tread comprising a web and ribs of steel, the ribs having properly Spaced holes, and soft metal-plugs seated in said holes.

Description

No. 884,493. PATENTED APR. 14, 1908. J. KAHN.
STAIB. TRBAD;
APPLICATION IILBD 8111913, 1907.
T13 .31 I witnesses Inventor a Rttomey;
- UNITED STATES PATENT OFFICE.
JULIUS KAHN, 0F DETROIT, MICHIGAN.
STAIR-TREAD.
Application filed September To all 107mm it may concern:
Be it known that I, JULIUs KAHN, a citizen of the United States, and a resident of Detroit, in the county of Wayne and State of Michigan, have invented a new and Improved Stair-Tread, of whichthe following IS a specification.
My invention consists in a ribbed metal plate, preferably of rolled steel, the ribs bemg sharp and provided with properly spaced buttons or knobs.
It further consists in forming these bosses of lead or other material upon which leather does not easily slip.
In the accompanying drawings, Figure 1 is a perspective view of a stair tread. -F' 2 is a section of stair tread with a modi ed form of rib. Fig. 3 is a view of another form of rib. 4 is a cross section of rib showin% the soft lead button or knob in position.
imilar reference characters refer to like parts throu bout the several views.
The trea shown in Fig. l is formed with parallel ribs 1 connected by a web 2. The ribs 1 are triangular with straight sides and between these ribs are beads or ridges 3 which render the treads easier to clean. Buttons or knobs 4 properly 8 aced along the tops of the ribs I prevent t e feet from slipping sidewise along the ribs, while the ribs prevent transverse slipping. As the buttons are larger in area than the ribs next Specification of Letters Patent.
Patented April 14, 1908, a, 1907. Serial No.391,l)1.
to them, the buttons will wear more slowly, and until they are worn down to where they are no wider than the ribs, will always pro- Ject.
In Fig. 2 I have shown a web 5, ribs 6 having concave sides, and buttons 7 on the ribs. The rib 8 in Fig. 3 has convex sides.
Instead of forming the buttons of the same metal as the remainder of the tread, I may form them of lead or other soft metal. In that case the ribs 10 are formed with roperly spaced holes and the plugs 11 0 soft metal are forced into them.
The form and size of the ribs and the spacing of the buttons can be varied as desired.
Iavin now explained my improvements, what I e aim as my invention and desire to ssecure by Letters Patent is;
1. A rolled steel stair tread comprising a web and parallel ribs on the web, ant buttons or knobs on the ribs.
2. A metal stair tread comprising a web and ribs of steel, the ribs having properly Spaced holes, and soft metal-plugs seated in said holes.
In testimony whereof I have signed this application in the presence of two subscribing witnesses.
JULIUS KAHN. Witnesses: I
M. K. KENNEDY, E. N. PAGELSEN.
US39101407A 1907-09-03 1907-09-03 Stair-tread. Expired - Lifetime US884493A (en)

Priority Applications (1)

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US39101407A US884493A (en) 1907-09-03 1907-09-03 Stair-tread.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US39101407A US884493A (en) 1907-09-03 1907-09-03 Stair-tread.

Publications (1)

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US884493A true US884493A (en) 1908-04-14

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US39101407A Expired - Lifetime US884493A (en) 1907-09-03 1907-09-03 Stair-tread.

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050121876A1 (en) * 2003-12-04 2005-06-09 Roch Gaudreau Floor board
US20110056158A1 (en) * 2005-06-02 2011-03-10 Snapsports Company Modular floor tile with resilient support members

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050121876A1 (en) * 2003-12-04 2005-06-09 Roch Gaudreau Floor board
US20110056158A1 (en) * 2005-06-02 2011-03-10 Snapsports Company Modular floor tile with resilient support members
US8341896B2 (en) * 2005-06-02 2013-01-01 Snapsports Company Modular floor tile with resilient support members
US8656662B2 (en) 2005-06-02 2014-02-25 Snapsports Company Modular floor tile with resilient support members
US8713863B2 (en) 2005-06-02 2014-05-06 Snapsports Company Modular floor tile with resilient support members
US9080333B2 (en) 2005-06-02 2015-07-14 Snapsports Company Modular floor tile with resilient support members
US9695603B2 (en) 2005-06-02 2017-07-04 Snapsports Company Modular floor tile with resilient support members

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