US750998A - of jamestown - Google Patents
of jamestown Download PDFInfo
- Publication number
- US750998A US750998A US750998DA US750998A US 750998 A US750998 A US 750998A US 750998D A US750998D A US 750998DA US 750998 A US750998 A US 750998A
- Authority
- US
- United States
- Prior art keywords
- riser
- pillar
- tread
- stairway
- jamestown
- 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
Links
- 239000002184 metal Substances 0.000 description 12
- 210000002105 Tongue Anatomy 0.000 description 8
- 238000010276 construction Methods 0.000 description 8
- 210000001503 Joints Anatomy 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
Images
Classifications
-
- 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
- My invention relates to spiral stairways, and more especially to metallic stairways for use in banks, vaults, libraries, or other places where a light freproof structure is desirable, the object of my invention being to provide such a metallic stairway in which the risers and treads of the stairs as well as the stringers may be formed of plate or sheet metal so formed and assembled as to reduce the number of parts and provide a light but durable staircase.
- FIG. l is a view of a portion of a spiral stairway embodying my invention.
- Fig. 2 is an enlarged perspective view of the tread and riser and the manner of securing same to the central support or pillar.
- Fig. 3 is a sectional View of the stringer.
- Fig. 4 is a sectional view of the tread and riser.
- the numeral 2 designates the central column or pillar around which the stairway is wound, said pillar being supported in any suitable manner, and said pillar, if desired, may be formed of tubing of proper diameter.
- the steps consist of the risers 3 and treads 4, formed from one piece of sheet metal, the risers having the tongues or extensions 5,formed thereon,adapt ed to encircle the pillar 2 and secured by means of the rivets 6 or in any other suitable manner.
- the tongue 5 forms thus a sleeve surrounding the pillar, said tongue being riveted to the Y riser.
- the outer end of the riser 3 is provided sides thereof, the spring of the metal of the/ tube itself being suiiicient to hold said beading in place without the employment of other fastening means.
- Each tread or riser is provided with a iiange to form a connection with the adjoining riser or tread.
- the preferred construction is illustrated, the tread 4 of the step being provided with the flange 9 along its rear end adapted to be riveted to the riser of the next succeeding step, the downwardlyextending iange IOn at the outer end of said tread being adapted to be secured to the Stringer 8.
- Spiral stairways constructedin accordance with my invention will be found to be particularly applicable for use in banks, vaults, and libraries, where a fireproof structure is required and where a light compact staircase is desirable.
- tread and riser of each step from one piece of metal no joints are formed at the outer edge of the step and a strong, stiff, and durable structure is obtained.
- No separate connecting device is required to connect the steps to the central col-l umn or pillar, and a neat appearance is obtained by the continuation of the riser around the pillar, While at the same time e very secure and durable connection With said pillar is made.
- I/Vhat I claim is- In a spiral stairway, the combination with a suitable post, pillar or Column, of a Step having the riser and tread formed from one piece of plate or sheet metal, seid treed and riser having flanges adapted to be secured to the Stringer.
Description
No. 750,998. PATENTBD PEB. 2, 1904.
E. OHNSTRAND.
ST'AIRWAY.
APPLICATION FILED FEB.20, 1903.
N0 MODEL.
Patented February 2, 1904.
UNITED STATES PATENT OFFICE.
ENOCH OHNSTRAND, OF JAMESTOWN, NEW YORK, ASSIGNOR TO ART METAL CONSTRUCTION COMPANY, OF JAMESTOVN, NEI/V YORK, A CORPORATION OF NEW YORK.
STAIRWAY.
SPECIFICATION forming part of Letters Patent No. 750,998, dated February 2, 1904.
Application lled February 20,1903. Serial No. 144,222. (No model.)
To all whom, it may concern.:
Be it known that I, ENocH OHNsTRAND, a resident of Jamestown, in the county of Chautauqua and Stat-e of New York, have invented a new and useful Improvement in Stairways; and I do hereby declare the following to be a full, clear, and exact description thereof.
My invention relates to spiral stairways, and more especially to metallic stairways for use in banks, vaults, libraries, or other places where a light freproof structure is desirable, the object of my invention being to provide such a metallic stairway in which the risers and treads of the stairs as well as the stringers may be formed of plate or sheet metal so formed and assembled as to reduce the number of parts and provide a light but durable staircase.
To these ends my invention comprises the novel features hereinafter set forth and claimed.
To enable others skilled in the art to make and use my invention, I will describe the same with reference to the accompanying drawings, in which- Figure l is a view of a portion of a spiral stairway embodying my invention. Fig. 2 is an enlarged perspective view of the tread and riser and the manner of securing same to the central support or pillar. Fig. 3 is a sectional View of the stringer. Fig. 4 is a sectional view of the tread and riser.
Like numerals indicate like parts in each of the figures.
In the accompanying drawings the numeral 2 designates the central column or pillar around which the stairway is wound, said pillar being supported in any suitable manner, and said pillar, if desired, may be formed of tubing of proper diameter. The steps consist of the risers 3 and treads 4, formed from one piece of sheet metal, the risers having the tongues or extensions 5,formed thereon,adapt ed to encircle the pillar 2 and secured by means of the rivets 6 or in any other suitable manner. The tongue 5 forms thus a sleeve surrounding the pillar, said tongue being riveted to the Y riser. The outer end of the riser 3 is provided sides thereof, the spring of the metal of the/ tube itself being suiiicient to hold said beading in place without the employment of other fastening means. Each tread or riser is provided with a iiange to form a connection with the adjoining riser or tread. The preferred construction is illustrated, the tread 4 of the step being provided with the flange 9 along its rear end adapted to be riveted to the riser of the next succeeding step, the downwardlyextending iange IOn at the outer end of said tread being adapted to be secured to the Stringer 8. In this manner the spiral stairway is built up, the tongues 5 of the risers of each succeeding step encircling the pillar 2, so as to rest one upon the other in the manner shown in Fig. l, while each riser and tread is secured in the manner desired to the riser of the succeeding step and to the Stringer. By my invent-ion a light but very rigid construction is thus obtained, the cost of construction and labor being reduced by the fact of the risers and treads being formed of one piece of metal and secured to each other without the use of separate connecting-pieces.
Spiral stairways constructedin accordance with my invention will be found to be particularly applicable for use in banks, vaults, and libraries, where a fireproof structure is required and where a light compact staircase is desirable. By forming the tread and riser of each step from one piece of metal no joints are formed at the outer edge of the step and a strong, stiff, and durable structure is obtained. No separate connecting device is required to connect the steps to the central col-l umn or pillar, and a neat appearance is obtained by the continuation of the riser around the pillar, While at the same time e very secure and durable connection With said pillar is made.
I/Vhat I claim is- In a spiral stairway, the combination with a suitable post, pillar or Column, of a Step having the riser and tread formed from one piece of plate or sheet metal, seid treed and riser having flanges adapted to be secured to the Stringer. IO
In testimony Whereoil I, the Sayid ENOCH OHNSTRAND, have hereunto set my hand.
ENOCH OHNSTRAND. `Witnesses:
A. GILBERT, R. M. BAUER.
Publications (1)
Publication Number | Publication Date |
---|---|
US750998A true US750998A (en) | 1904-02-02 |
Family
ID=2819491
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US750998D Expired - Lifetime US750998A (en) | of jamestown |
Country Status (1)
Country | Link |
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US (1) | US750998A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3343316A (en) * | 1964-10-14 | 1967-09-26 | Frank C Mcintire | Prefabricated step for stepway construction |
US4378862A (en) * | 1980-10-21 | 1983-04-05 | Modular Industries Ltd. | Portable spiral staircase |
US4527366A (en) * | 1981-12-21 | 1985-07-09 | Greene Welding And Hardware, Inc. | Curvilinear stairway constructions |
US4865311A (en) * | 1989-01-30 | 1989-09-12 | Paris Slides Inc. | Playground slide construction |
US20110209672A1 (en) * | 2010-02-26 | 2011-09-01 | Moore Iii William Arthur | Reversible Pet Spiral Staircase |
US9534395B2 (en) * | 2014-09-22 | 2017-01-03 | Rakennus Ja Tekniikka Haaslahti Oy | Staircase element and method for building a staircase |
US10214912B2 (en) * | 2014-09-12 | 2019-02-26 | Lograr Group Limited | Kit of parts for modular staircase |
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0
- US US750998D patent/US750998A/en not_active Expired - Lifetime
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3343316A (en) * | 1964-10-14 | 1967-09-26 | Frank C Mcintire | Prefabricated step for stepway construction |
US4378862A (en) * | 1980-10-21 | 1983-04-05 | Modular Industries Ltd. | Portable spiral staircase |
US4527366A (en) * | 1981-12-21 | 1985-07-09 | Greene Welding And Hardware, Inc. | Curvilinear stairway constructions |
US4865311A (en) * | 1989-01-30 | 1989-09-12 | Paris Slides Inc. | Playground slide construction |
US20110209672A1 (en) * | 2010-02-26 | 2011-09-01 | Moore Iii William Arthur | Reversible Pet Spiral Staircase |
US8534234B2 (en) * | 2010-02-26 | 2013-09-17 | William Arthur Moore, III | Reversible pet spiral staircase |
US10214912B2 (en) * | 2014-09-12 | 2019-02-26 | Lograr Group Limited | Kit of parts for modular staircase |
US9534395B2 (en) * | 2014-09-22 | 2017-01-03 | Rakennus Ja Tekniikka Haaslahti Oy | Staircase element and method for building a staircase |
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