US3748802A - Built-up rail post by which the steps of spiral stairs are connected with the hand rail, and components of such rail post - Google Patents

Built-up rail post by which the steps of spiral stairs are connected with the hand rail, and components of such rail post Download PDF

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Publication number
US3748802A
US3748802A US00122745A US3748802DA US3748802A US 3748802 A US3748802 A US 3748802A US 00122745 A US00122745 A US 00122745A US 3748802D A US3748802D A US 3748802DA US 3748802 A US3748802 A US 3748802A
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United States
Prior art keywords
tubular covering
load
covering elements
tubular
rail
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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
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US00122745A
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English (en)
Inventor
G Verderio
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Individual
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Individual
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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
    • E04F11/18—Balustrades; Handrails
    • E04F11/181—Balustrades
    • E04F11/1842—Balusters; Grille-type elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
    • E04F11/18—Balustrades; Handrails
    • E04F2011/1885—Handrails or balusters characterized by the use of specific materials
    • E04F2011/1887—Handrails or balusters characterized by the use of specific materials mainly of wood
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
    • E04F11/18—Balustrades; Handrails
    • E04F2011/1885—Handrails or balusters characterized by the use of specific materials
    • E04F2011/1889—Handrails or balusters characterized by the use of specific materials mainly of metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
    • E04F11/18—Balustrades; Handrails
    • E04F2011/1885—Handrails or balusters characterized by the use of specific materials
    • E04F2011/1897—Handrails or balusters characterized by the use of specific materials mainly of organic plastics with or without reinforcements or filling materials

Definitions

  • ABSTRACT This invention concerns a built-up rail post, by which the steps of spiral stairs and particularly of dismountable spiral stairs, are connected with the hand rail.
  • the invention also covers the components of same rail post, said built-up rail post consists of an allthreaded, loadbearing central rod, made preferably of a metal, and of a plurality of covering tubular elements, slipped on to said load-bearing core, being the connection between each covering element and the load-bearing core ensured by screw sockets fast with the covering element ends and screwed on the threading of load-bearing core, thus stabilizing and stifiening the assembly.
  • This invention relates such rail posts of which one for each step are needed in the dismountable spiral stairs are built-up by at least two components, since their lower section shall act as a spacer between two adjacent steps, while their upper section is designed to support the hand rail, being both sections made by tubular members, which are slipped on a core consisting of a metal round.
  • the purpose of this invention consists in the prevention of above stated drawbacks by the provision of a built-up rail post, by which the steps of dismountable spiral stairs are connected with the hand rail, and that shows superior properties of strength and rigidity, allowing also an easy and proper assembly and disassembly.
  • a further purpose of the invention is the provision o a built-up post of the above defined type wherein a thorough connection between the single components is ensured, with possibility of an adequate adjustment of the assemblage force, whereby to take due account of the unavoidable axial shrinkage.
  • the built-up post by which the steps of spiral stairs and particularly of dismountable spiral stairs are connected with the hand rail, said built-up post consistsof an allthreaded, load-bearing central rod, made preferably of a metal, and of a plurality of covering tubular elements, slipped on to said load-bearing core, being the connection between each covering element and the loadbearing core ensured by screw sockets fast with the covering element ends and screwed on the threading of loadbearing core, thus stabilizing and stiffening the assembly.
  • the length of lowest covering element is conveniently equal to therise of a step, and all covering elements can be made either of wood, or of a suitable plastics.
  • FIG. 1 is a side elevation of a built-up rail post, fast with the upper end of which is a portion of hand rail, and:
  • FIG. 2 is an enlarged cross-section of a detail, wherein the connection between the load-bearing core and the covering elements is shown more clearly.
  • A is the g I load bearing core, consisting of an iron round, while B,
  • B B B B B and B are the covering tubular components slipped on to said load-bearing core A (see FIG. 1
  • Said covering elements having an inside diameter of bore 1 slightly larger that the outside diameter of A, are differently shaped, i.e., some of them (8,, B and B show a square cross section, while all other (B B and B situated between the former ones) have a round cross-section.
  • they can be made either of wood and of plastics.
  • the load carrying core A is connected with the covering elements B, B B 8,, B. and B by means of the threading 2, that extends across the whole length of iron round A, and of the threaded bushes C (see FIG. 2), that are accommodated in corresponding counterbored portions 3a3b, formed on top end of underlying element and on the bottom end of overlying element, respectively.
  • FIG. 1 shows how a tread can be clamped in the adjustable space 4, while the underlying tread is clamped in the space 5, whereby the step rise is defined by the element B
  • the element B having a square cross-sectional area equal to that of underlying element, acts as a base for the row of elements (8,, B B having a circular cross-section.
  • the top covering element B having a square cross-section, is connected with the inclined hand rail 6.
  • a flanged metal bush 7 is screwed on to the lower end of load-bearing core A, thus allowing to adjust the core length to be covered with the elements B and ensuring therefore an adjustable assembling of the whole structure.
  • An inclined handrail support arrangement comprising an elongated metallic load-bearing cylindrical core, said elongated load-bearing corebeing threaded for its entire length, a plurality of tubular covering elements with each tubular covering element having a top end and a bottom end, each of said tubular covering elements having an elongated internal bore, the internal bore of each of said tubular covering elements having a diameter slightly larger than the diameter of said load-bearing core, the load-bearing core passing through the internal bore of each of said tubular covering elements, a first tread, the bottom end of the lowermost of said tubular covering elements supported on said first tread, a second tread higher in elevation than said first tread, the bottom end.
  • each threaded bush resting on the upper end of one tubular covering element and received in the counterbore at the upper end thereof and also being received in the counterbore at the lower end of the next higher tubular covering element, a flange metal bush being screwed on to the lower end of the load-bearing core, and an in clined handrail being secured to the uppermost tubular element.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Steps, Ramps, And Handrails (AREA)
  • Ladders (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Escalators And Moving Walkways (AREA)
US00122745A 1970-04-10 1971-03-10 Built-up rail post by which the steps of spiral stairs are connected with the hand rail, and components of such rail post Expired - Lifetime US3748802A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2315370 1970-04-10

Publications (1)

Publication Number Publication Date
US3748802A true US3748802A (en) 1973-07-31

Family

ID=11204333

Family Applications (1)

Application Number Title Priority Date Filing Date
US00122745A Expired - Lifetime US3748802A (en) 1970-04-10 1971-03-10 Built-up rail post by which the steps of spiral stairs are connected with the hand rail, and components of such rail post

Country Status (10)

Country Link
US (1) US3748802A (de)
AT (1) AT308367B (de)
BE (1) BE763696A (de)
CA (1) CA957824A (de)
CH (1) CH520850A (de)
DE (1) DE2111699C3 (de)
ES (1) ES195111Y (de)
FR (1) FR2083138A5 (de)
GB (1) GB1292427A (de)
NL (1) NL143308B (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4373310A (en) * 1980-04-14 1983-02-15 Robert Dean Staircase handrail construction
US4501512A (en) * 1981-12-07 1985-02-26 Keeler Brass Company Furniture article with compression hub for joining radial members
US5829390A (en) * 1997-10-22 1998-11-03 Jonilla; Richard K. Door-mounted, scratch, exercise and perch structure for cats
US6715242B1 (en) * 2001-07-05 2004-04-06 Ecmd, Inc. Stairway and rail system
US20050205855A1 (en) * 2004-03-22 2005-09-22 Min-Ju Chung Baluster
US9267293B1 (en) * 2015-02-13 2016-02-23 Jia-Hao Li Hand railings

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3404276A1 (de) * 1983-11-25 1985-08-08 Neucon Maschinen- Und Bausysteme Gmbh U. Co Kg, 7100 Heilbronn Gelaenderstab
FR2713814A1 (fr) * 1993-12-09 1995-06-16 Granger Jean Michel Barre de maintien ou colonne d'appui à vocation publicitaire de type sculptural, visuelle, et, ou, tactile dans les transports en communs.

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11032A (en) * 1854-06-06 Improvement in seed-planters
US336196A (en) * 1886-02-16 Fence-post
US1385606A (en) * 1916-10-16 1921-07-26 Christensen Jorgen An Frederik Device for joining concrete blocks disposed in a pillar or in series
US1723216A (en) * 1927-05-14 1929-08-06 Stam Martinus Joannes Hollow pole
FR1061295A (fr) * 1952-08-07 1954-04-12 Perfectionnements aux escaliers en colimaçon
FR1333208A (fr) * 1962-06-15 1963-07-26 Escalier tournant
US3114941A (en) * 1956-10-18 1963-12-24 Blumcraft Pittsburgh Rail post assembly

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11032A (en) * 1854-06-06 Improvement in seed-planters
US336196A (en) * 1886-02-16 Fence-post
US1385606A (en) * 1916-10-16 1921-07-26 Christensen Jorgen An Frederik Device for joining concrete blocks disposed in a pillar or in series
US1723216A (en) * 1927-05-14 1929-08-06 Stam Martinus Joannes Hollow pole
FR1061295A (fr) * 1952-08-07 1954-04-12 Perfectionnements aux escaliers en colimaçon
US3114941A (en) * 1956-10-18 1963-12-24 Blumcraft Pittsburgh Rail post assembly
FR1333208A (fr) * 1962-06-15 1963-07-26 Escalier tournant

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4373310A (en) * 1980-04-14 1983-02-15 Robert Dean Staircase handrail construction
US4501512A (en) * 1981-12-07 1985-02-26 Keeler Brass Company Furniture article with compression hub for joining radial members
US5829390A (en) * 1997-10-22 1998-11-03 Jonilla; Richard K. Door-mounted, scratch, exercise and perch structure for cats
US6715242B1 (en) * 2001-07-05 2004-04-06 Ecmd, Inc. Stairway and rail system
US7159363B1 (en) 2001-07-05 2007-01-09 Ecmd, Inc. Stairway and rail system
US20050205855A1 (en) * 2004-03-22 2005-09-22 Min-Ju Chung Baluster
US9267293B1 (en) * 2015-02-13 2016-02-23 Jia-Hao Li Hand railings

Also Published As

Publication number Publication date
DE2111699A1 (de) 1971-10-28
ES195111U (es) 1975-01-16
GB1292427A (en) 1972-10-11
BE763696A (fr) 1971-08-02
ES195111Y (es) 1975-06-01
NL143308B (nl) 1974-09-16
AT308367B (de) 1973-07-10
DE2111699B2 (de) 1980-03-20
NL7102791A (de) 1971-10-12
FR2083138A5 (de) 1971-12-10
CA957824A (en) 1974-11-19
CH520850A (it) 1972-03-31
DE2111699C3 (de) 1980-11-13

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