US139903A - Improvement in beams for floors - Google Patents
Improvement in beams for floors Download PDFInfo
- Publication number
- US139903A US139903A US139903DA US139903A US 139903 A US139903 A US 139903A US 139903D A US139903D A US 139903DA US 139903 A US139903 A US 139903A
- Authority
- US
- United States
- Prior art keywords
- beams
- floors
- improvement
- iron
- lummus
- 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
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/12—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members
- E04C3/14—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members with substantially solid, i.e. unapertured, web
Definitions
- my invention consists in a wooden beam having its vertica1 side's slightly hollowed or concave, and strengthened and protected by metal plates arched or curved to correspond with the sides of the beam, and connected by bolts or rivets through the beam.
- Figure l is the elevation of the side of a beam with my improvements
- Fig. 2 is a cross-section of the same.
- A is a beam of wood with its vertical sides slightly hollowed or concave to fit the curvedor arched metal plates 13 B applied to its sides to strengthen and protect it, and prevent it from burning with the facility it would do if not protected by the iron.
- These iron plates B B may be connected or fastened together and to the beam'of wood by bolts or rivets O 0 passing through them and through the beam of wood.
- the advantages of this invention are as follows, viz: Simplicity of construction and adaptation to service, economy in the use of iron, getting the greatest strength from a given thickness of iron with the least danger/ of bending, buckling, or collapsing, furnishing wood for nailingboards, laths, furrings, roofing, flooring or ceiling materials, which wooden nailing is protected from fire by the iron plates.
- Wooden beam having its vertical sides slightly hollowed or concave, and strengthened and protected by metal plates arched or curved to correspond with the sides of the beam, and connected by bolts or rivets through the beam, substantially as described.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Building Environments (AREA)
Description
w. w. LUMMUS.
Beams for Floors.
Paten ted June17. 1873.
IRON
IRON
Z@W Z Side.
'NVENT-OR- AM mom'umo GRAPHIC cu m: (osaonns Fnacsss.)
UNITED STATEs PATENT OEEIoE,
WILLIAM W. LUMMUS, 0F LYNN, MASSACHUSETTS.
IMPROVEMENT IN BEAMS FOR FLOORS.
Specification forming part of Letters Patent No. 139,903, dated June 17, 1873 application filed November 18, 1872.
To all whom it may concern:
Be it known that I, WILLIAM W. LUMMUS,
of Lynn, Essex county, in the State of Massa chusetts, have invented certain new and useful-Improvements in Beams, Floor-Joist, and Rafters; and I hereby declare the following to be a full and exact description thereof, reference being bad to the accompanying drawings forming part of this specification.
The nature or essence of my invention consists in a wooden beam having its vertica1 side's slightly hollowed or concave, and strengthened and protected by metal plates arched or curved to correspond with the sides of the beam, and connected by bolts or rivets through the beam.
In the accompanying drawings, Figure l is the elevation of the side of a beam with my improvements, and Fig. 2 is a cross-section of the same.
- In the above-mentioned drawings, A is a beam of wood with its vertical sides slightly hollowed or concave to fit the curvedor arched metal plates 13 B applied to its sides to strengthen and protect it, and prevent it from burning with the facility it would do if not protected by the iron. These iron plates B B may be connected or fastened together and to the beam'of wood by bolts or rivets O 0 passing through them and through the beam of wood.
The advantages of this invention are as follows, viz: Simplicity of construction and adaptation to service, economy in the use of iron, getting the greatest strength from a given thickness of iron with the least danger/ of bending, buckling, or collapsing, furnishing wood for nailingboards, laths, furrings, roofing, flooring or ceiling materials, which wooden nailing is protected from fire by the iron plates.
What I claim as my invention and improvement is- A Wooden beam having its vertical sides slightly hollowed or concave, and strengthened and protected by metal plates arched or curved to correspond with the sides of the beam, and connected by bolts or rivets through the beam, substantially as described.
WILLIAM W. LUMMUS.
Witnesses: I
J. DENNIs, J r., EDM. F. BROWN-
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US139903A true US139903A (en) | 1873-06-17 |
Family
ID=2209317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US139903D Expired - Lifetime US139903A (en) | Improvement in beams for floors |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US139903A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3992887A (en) * | 1976-02-09 | 1976-11-23 | Griswold Machine & Engineering, Inc. | Trench shoring assembly with force transferring accessory |
-
0
- US US139903D patent/US139903A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3992887A (en) * | 1976-02-09 | 1976-11-23 | Griswold Machine & Engineering, Inc. | Trench shoring assembly with force transferring accessory |
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