US1402296A - Antislipping tile - Google Patents

Antislipping tile Download PDF

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Publication number
US1402296A
US1402296A US231485A US23148518A US1402296A US 1402296 A US1402296 A US 1402296A US 231485 A US231485 A US 231485A US 23148518 A US23148518 A US 23148518A US 1402296 A US1402296 A US 1402296A
Authority
US
United States
Prior art keywords
tile
slipping
tread
wear
nose
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US231485A
Other languages
English (en)
Inventor
George N Jeppson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saint Gobain Abrasives Inc
Original Assignee
Norton Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Norton Co filed Critical Norton Co
Priority to US231485A priority Critical patent/US1402296A/en
Priority to DEN19021D priority patent/DE366239C/de
Application granted granted Critical
Publication of US1402296A publication Critical patent/US1402296A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B32/00—Artificial stone not provided for in other groups of this subclass
    • C04B32/005—Artificial stone obtained by melting at least part of the composition, e.g. metal
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/30—Oxides other than silica
    • C04B14/303—Alumina
    • 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
    • E04F11/17—Surfaces

Definitions

  • y invention relates to anti-slipping or safety tread surfaces, and more particularly to ceramic tile, embodying therein granules of wear resisting anti-slipping material which give to the tread surface sufficient friction qualities to prevent a pedestrian slipping while walking thereon.
  • the tread surface let the foot slip slightly to prevent too great a shock on the foot muscles. Therefore, these anti-slipping particles which project from the tile should be as small as possible, and yet give the desired antislipping characteristics. Furthermore, the smooth surfaced stone or tile, which is made of the finer grains, may be readil formed into a compact, dense structure which may be easily kept clean and sanitary.
  • Fig. 1 is a perspective View top and nose of a tile
  • Fig. 2 is a similar perspective View showing tile.
  • the nose portion a rough surface capable of preventing slipping, while the under-side of a similarly constructed for an object of my invention the prothe rear portion of the tread has a finer, smoother surface.
  • my in vention comprising a treadblock 1 which may be of any suitable shape but preferably a flat plate havinga'rectangular surface. That portion of the block or tile which is to serve as the nose of the stair tread or the upper forward corner portion thereof may be rounded off as at 2.
  • the bottom face 3 of the tile is preferably provided with grooves '4 or other suitable means, such as an irregular surface or perforations for screws or bolts, to hold the tile in concrete or on other foundation material.
  • I may make the body portions of large and fine granules respectively, in which case I proceed along the following line.
  • a mold having its bottom corresponding with the shape of the upper face 5 of the tile block is provided.
  • a partition 6 (diagrammatically shown in Fig. 2 in phantom view) is located at the proper position in order that the coarse and the fine parts of the tile may be formed in separate operations.
  • the forward or nose end of the mold is filled with a plastic composition of previously fused granular particles of alumina, for example, preferably of grain sizes of 20 to 36 mesh, and if desired incorporated with smaller grains to give density and compactness, mixed with water and a suitable ceramic bonding agent, such as a glass fusing clay bond of feldspar, slip clay, ball clay and whiting.
  • a suitable ceramic bonding agent such as a glass fusing clay bond of feldspar, slip clay, ball clay and whiting.
  • another plastic mixture of the crystalline alumina of finer grain sizes and a clay bond is poured into the rear end of the mold, after which the partition may be withdrawn and the whole subjected to pressure to compact the mass and give it the required density.
  • the grooves 4 may he formed in the press. After drying, the tile is burned slowly at a temperature approximately 1300 C.
  • the size of grain utilized in the rear portion of the tile may be as desired, but I find that the very finest grains are suitable for this purpose. However it is obvious that the sizes of grain to be chosen for the two parts of the tile depend upon the intended use for the tread and its location.
  • the deniaoaaea sity and compactness of the mass may be controlled by modifying the bond in accord: ance with methods well known in the ocramic art and by varying the sizes of the granules. By mixing fine grains with the coarser particles, and by using a number of different sizes of grain, an desired density up to a maximum may be 0 tained.
  • a safety tread tile comprising hard, wear-resisting granules and a bonding medium therefor intimately bonded and forming an integral structure, the nose portion of the tread surface having coarser grains of higher anti-slipping characteristics than the remainder of said surface.
  • A. safety tread tile comprising granules of a hardness of 9 or more and a ceramic bond united as a unitary mass, the grain sizes in that portion of the, tread surface intended for heavy wear averaging larger than those in the remainder of the block.
  • a portion comprising granules of crystalline alumina bonded into a unitary mass, adapted to prevent slipping thereon. and a second portion integral therewith and exposed to traffic wear, comprising a bonded mass of wear-resisting anti-slipping material, which has lower anti-slipping characteristics than the first portion.
  • An anti-slipping tread tile comprising a round nosed, fiat plate of ceramic bonded crystalline alumina grain, the nose portion containing large alumina granules capable of resisting wear and slipping tendencies and the rear body portion containing smaller granules and having a smoother surface than the nose.
  • An anti-slipping tread tile comprising a fiat plate of ceramic bonded granular alumina having a rounded nose and a groove to cooperate with a foundation to hold the tile in place, the nose'portion of the plate containing larger alumina granules than the rear portion.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Civil Engineering (AREA)
  • Architecture (AREA)
  • Road Paving Structures (AREA)
  • Floor Finish (AREA)
  • Steps, Ramps, And Handrails (AREA)
US231485A 1918-04-29 1918-04-29 Antislipping tile Expired - Lifetime US1402296A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US231485A US1402296A (en) 1918-04-29 1918-04-29 Antislipping tile
DEN19021D DE366239C (de) 1918-04-29 1920-07-08 Gleitschutzfliese

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US231485A US1402296A (en) 1918-04-29 1918-04-29 Antislipping tile

Publications (1)

Publication Number Publication Date
US1402296A true US1402296A (en) 1922-01-03

Family

ID=22869417

Family Applications (1)

Application Number Title Priority Date Filing Date
US231485A Expired - Lifetime US1402296A (en) 1918-04-29 1918-04-29 Antislipping tile

Country Status (2)

Country Link
US (1) US1402296A (de)
DE (1) DE366239C (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3168387A1 (de) * 2015-11-14 2017-05-17 kaminofenkeramik Rene Rasbach e.K. Treppenstufe und verfahren zur herstellung einer treppenstufe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3168387A1 (de) * 2015-11-14 2017-05-17 kaminofenkeramik Rene Rasbach e.K. Treppenstufe und verfahren zur herstellung einer treppenstufe

Also Published As

Publication number Publication date
DE366239C (de) 1923-01-05

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