US3605371A - Stabilizing spacer for the steps of spiral staircases with metal newels - Google Patents

Stabilizing spacer for the steps of spiral staircases with metal newels Download PDF

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Publication number
US3605371A
US3605371A US809756A US3605371DA US3605371A US 3605371 A US3605371 A US 3605371A US 809756 A US809756 A US 809756A US 3605371D A US3605371D A US 3605371DA US 3605371 A US3605371 A US 3605371A
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United States
Prior art keywords
collar
tubular element
steps
diameter
spacer
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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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US809756A
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English (en)
Inventor
Giuseppe Verderio
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Individual
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Individual
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Publication of US3605371A publication Critical patent/US3605371A/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
    • E04F11/022—Stairways; Layouts thereof characterised by the supporting structure
    • E04F11/032—Spiral stairways supported by a central column

Definitions

  • annular component securable to the end of a tubular element of a stabilizing spacer for the steps of a spiral staircase.
  • the component has a first fiat collar to which a second collar is welded at two diametrally opposite spots.
  • the first and second collars have equal inside diameters to allow free passage of a step-supporting newel.
  • the outside diameter of the second collar is slightly smaller than the inside diameter of the tubular element to permit engagement with the tubular element.
  • the second collar is bent around the diameter extending through the welding spots to progressively diverge from the first collar and insertable the tubular element to center the latter.
  • the present invention relates to a novel component which may be employed as part of a stabilizing spacer for the steps of spiral staircases with metal newels. More precisely, the invention relates to spacer end disk components which may be utilized in staircases having metal newels not sheathed with wood.
  • stabilizing spacers for winding staircases consist of a tubular muflle spacer element having a longitudinal dimension nearly equal to the step rise, and completed on either end by relatively thin annular members which are inserted between the spacer element proper and the steps, in order to keep the spacers centered on a supporting tubular newel as shown in my copending application, Ser. No. 809,767, filed Mar. 24, 1969.
  • disks having a central opening to be slipped on the newel have heretofore been utilized as such annular members.
  • Such disks have also been fabricated with an annular projecting ridge by means of which the mufile element is kept centered, because it functions as a shoulder or aligning ring engaged inside of the mufiie element and is stabilized therein.
  • Each of such disks resembles a cover centrally apertured to allow for the free passage therethrough of a step-supporting newel.
  • the above and further purposes are attained by the component of the present invention which may be used as part of a stabilizing spacer for spiral staircase steps of the type comprising a tubular muffle spacer element and two annular components, fastened like covers on either end thereof.
  • the novel annular component consists of a first fiat collar, whereon a second collar is welded on 1 Claim United States Patent O 3,605,371 Patented Sept. 20, 1971 two diametrally opposite spots.
  • the inside diameter of latter collar is equal to that of first collar in order to allow for the free passage of step-supporting newel.
  • the outside diameter of same second collar may be slightly smaller than the inside diameter of the mufile spacer element to permit engagement with such element.
  • the second collar is upwardly bent around the diameter extending through the welding spots, thus progressively diverging from the first collar in order to act as an eflicient adjusting stop.
  • the present invention provides in a broader context a novel component including a first member, such as the first fiat collar, having at least one substantially flat major surface and a first predetermined dimension, such as the outer diameter of the first flat collar, of said substantially fiat major surface.
  • the component also includes a second member, such as the second collar, which is connected to the first member at at least two substantially diametrically opposed locations of the substantially flat major surface.
  • the second member diverges away from a line determined by the two substantially diametrically opposed locations and away from the substantially flat major surface of the first member.
  • the second member has a dimension, such as its outer diameter, which is substantially equal to or less than and which is substantially parallel to the first predetermined dimension of the substantially fiat major surface of the first member.
  • FIG. 1 is a perspective view of a tubular muffie spacer with two annular components according to the invention.
  • FIG. 2 is a vertical section of the tubular mufile spacer element with the annular component fitted on its top.
  • a is a tubular mufile spacer element that represents the spacer body, and b is an annular component according to this invention.
  • the component b may consist of a first member or flat collar 1, having an inside diameter 2 to allow the collar 1 to he slipped on a tubular step-supporting newel (not shown).
  • a second member or thinner collar 1a having an inside diameter 2a equal to diameter 2 of the first fiat collar 1, while its outside diameter 4 may be slightly smaller than the inner diameter 4a of tubular element a.
  • the second collar 1a may be upwardly bent around the diameter extending through the welding locations or spots 3 thus acquiring a so-called mule-back shape, as can be seen in FIG. 2.
  • both halves of the second member or collar 1w diverge progressively and symmetrically from the first member or collar 1 beginning from the welding locations or spots 3.
  • the second member or collar 1a fits snugly inside of the tubular mufile spacer element a, being to such a purpose utilized the distance from the collar a, which in FIG. 2 has been expressely enlarged, but that in practice will be on an average equal to half of the maximum value as shown in FIG. 2.
  • Preassembled interconnecta'ble insulating panels for high temperature furnaces said panels comprising a metal backing, at least one layer of refractory block fixed in rows to said metal backing so as to have transverse spaces between adjacent rows, a high temperature insulating ceramic wool blanket covering said at least one layer of refractory block and folded into the transverse spaces between said adjacent rows, and anchor means for securing said high temperature insulating blanket to said metal backing, said anchor means positioned within said folds of said insulating blanket so as to be protected from direct furnace exposure.
  • said anchor means comprises elongated alloy rods positioned within said folds of said insulating blanket, said alloy rods being secured to said metal backing by means of alloy wire.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Prostheses (AREA)
US809756A 1968-03-26 1969-03-24 Stabilizing spacer for the steps of spiral staircases with metal newels Expired - Lifetime US3605371A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1438868 1968-03-26

Publications (1)

Publication Number Publication Date
US3605371A true US3605371A (en) 1971-09-20

Family

ID=11145022

Family Applications (1)

Application Number Title Priority Date Filing Date
US809756A Expired - Lifetime US3605371A (en) 1968-03-26 1969-03-24 Stabilizing spacer for the steps of spiral staircases with metal newels

Country Status (4)

Country Link
US (1) US3605371A (de)
AT (1) AT290818B (de)
CH (1) CH486620A (de)
DE (1) DE1902957A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD288610S (en) 1984-04-30 1987-03-03 Barber Gerald L Front section for a telescoping living compartment

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL204063A (de) * 1955-01-31

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD288610S (en) 1984-04-30 1987-03-03 Barber Gerald L Front section for a telescoping living compartment

Also Published As

Publication number Publication date
CH486620A (it) 1970-02-28
DE1902957A1 (de) 1969-10-02
AT290818B (de) 1971-06-25

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