US132803A - Improvement in iron-truss bridges - Google Patents
Improvement in iron-truss bridges Download PDFInfo
- Publication number
- US132803A US132803A US132803DA US132803A US 132803 A US132803 A US 132803A US 132803D A US132803D A US 132803DA US 132803 A US132803 A US 132803A
- Authority
- US
- United States
- Prior art keywords
- iron
- improvement
- truss
- post
- bridges
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 229910000754 Wrought iron Inorganic materials 0.000 description 4
- CWYNVVGOOAEACU-UHFFFAOYSA-N fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- CONWAEURSVPLRM-UHFFFAOYSA-N Lactofen Chemical compound C1=C([N+]([O-])=O)C(C(=O)OC(C)C(=O)OCC)=CC(OC=2C(=CC(=CC=2)C(F)(F)F)Cl)=C1 CONWAEURSVPLRM-UHFFFAOYSA-N 0.000 description 2
- 241000233805 Phoenix Species 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000332 continued Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D15/00—Movable or portable bridges; Floating bridges
- E01D15/12—Portable or sectional bridges
- E01D15/133—Portable or sectional bridges built-up from readily separable standardised sections or elements, e.g. Bailey bridges
Definitions
- My invention consists of a truss-frame brid g in which the floor-beams, posts, and braces are connected and supported as fully described hereafter, the object of my invention being to insure economy and simplicity in the construction of iron bridges.
- Figure l is a side view of sufficient of a truss-frame bridge to illustrate my invention Fig. 2, a transverse section of Fig. 1 on the line 1 2; Fig. 3, a sectional plan on the line 3 4, Fig. 2; Fig. 4, a perspective view, illustrating the mode of connecting the post to the floor-beam; Fig. 5, a perspective view of the bearer; and Fig. 6 illustrates a modification of my invention.
- A represents the lower portion of the vertical post of a truss-frame bridge; B and B, the diagonal and counter-diagonal stays; D D, the lower chord-links E, the bearer, and F the pin which connects the diagonals and chord-links tothe bearer, and G part of one of the floor-beams. It is the common practice in bridges of this class to suspend the floorbeams from the pin F by boltsa plan which has been considered by many engineers to be more or less precarious, especially as the nuts of the bolts, on the integrity of which the safety of the structure depends, are exposed,
- the post is, in the present instance, made of wrought-iron, in accordance with the invention of S. J. Reeves, patented June 17, 1862, and is composed of four flanged bars, a a and b b,-as best observed in the perspective view, Fig. 4, and at the lower end of the post the opposite bars a a are cut away for the admission of the ends of the floor-beam G, which is of the well-known character known as a Phoe nix beam.
- the bars b b of the post are con tinued downward, and are arranged to bear on blocks 01 d fitted to the lower flange, and to the web of the beam, a horizontal bolt, e, passing through the whole, as shown in Fig. 4.
- the pin F passes through the said plates and through the eyes of the diagonals B and B, and through those of the lower chord-links D D.
- the post should be of the precise character illustrated in the drawing; the post may, for instance, be constructed as shown in Fig. 6, the web being removed at the lower end of the posts, so that the latter fit over and embrace the fioonbeam; in fact, a post of any form may be used, providing it is prepared at the lower end for combination with the beam, substantially in the manner shown.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
Description
TJC. CLARKE.
Improvement in Iron Truss Bridges.
Patented Nov. 5,1872
AM PHOTO LITHDGRAFHIC cawxr'ossamvsls PRUCESSY) NITED STATES PATENT OEEIoE.
THOMAS C. CLARKE, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOB TO CLARKE, REEVES 8t 00., OF SAME PLACE.
IMPROVEMENT lNlRON-TRUSS BRIDGES.
Specification forming part of Letters Patent No. 13%,803, dated November 5, 1872.
To all whom it may concern:
Be it known that I, THOMAS CURTIS CLARKE, of Philadelphia, Pennsylvania, have invented certain Improvementsin Truss-Frame Bridges, of which the following is a specification:
My invention consists of a truss-frame brid g in which the floor-beams, posts, and braces are connected and supported as fully described hereafter, the object of my invention being to insure economy and simplicity in the construction of iron bridges.
In the accompanying drawing, Figure l is a side view of sufficient of a truss-frame bridge to illustrate my invention Fig. 2, a transverse section of Fig. 1 on the line 1 2; Fig. 3, a sectional plan on the line 3 4, Fig. 2; Fig. 4, a perspective view, illustrating the mode of connecting the post to the floor-beam; Fig. 5, a perspective view of the bearer; and Fig. 6 illustrates a modification of my invention.
A represents the lower portion of the vertical post of a truss-frame bridge; B and B, the diagonal and counter-diagonal stays; D D, the lower chord-links E, the bearer, and F the pin which connects the diagonals and chord-links tothe bearer, and G part of one of the floor-beams. It is the common practice in bridges of this class to suspend the floorbeams from the pin F by boltsa plan which has been considered by many engineers to be more or less precarious, especially as the nuts of the bolts, on the integrity of which the safety of the structure depends, are exposed,
and may be easily tampered with by evil-dis.
posed persons. I obviate this evil in the manner which I will now proceed to describe: The post is, in the present instance, made of wrought-iron, in accordance with the invention of S. J. Reeves, patented June 17, 1862, and is composed of four flanged bars, a a and b b,-as best observed in the perspective view, Fig. 4, and at the lower end of the post the opposite bars a a are cut away for the admission of the ends of the floor-beam G, which is of the well-known character known as a Phoe nix beam. The bars b b of the post are con tinued downward, and are arranged to bear on blocks 01 d fitted to the lower flange, and to the web of the beam, a horizontal bolt, e, passing through the whole, as shown in Fig. 4. The flange of the beam and the blocks 01 drest on the bearer E, Fig. 5, which is maintained in position by a simple steady-pin,f, this bearer being composed, in the present instance, of two plain plates, m m, of wrought-iron, riveted to the flanges of a strip, n, of channel-iron. The pin F passes through the said plates and through the eyes of the diagonals B and B, and through those of the lower chord-links D D. It will now be seen that the floor-beam as Y well as the post is supported by the pin which connects together the diagonals and lower chord-links.
The simplicity of my invention and the economical results attained will be readily under stood by those familiar with structures of this class.
It is not essential in carrying out my invention that the post should be of the precise character illustrated in the drawing; the post may, for instance, be constructed as shown in Fig. 6, the web being removed at the lower end of the posts, so that the latter fit over and embrace the fioonbeam; in fact, a post of any form may be used, providing it is prepared at the lower end for combination with the beam, substantially in the manner shown.
I claim as my invention- The combination, with the bearer E, pin F, and diagonals and links, of the beam G and pivot A, the side bars of .which rest on blocks d supported directly by the bearer, the whole being connected as set forth.
In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.
THOMAS C. CLARKE.
Witnesses WM. A. STEEL, HARRY SMITH.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US132803A true US132803A (en) | 1872-11-05 |
Family
ID=2202220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US132803D Expired - Lifetime US132803A (en) | Improvement in iron-truss bridges |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US132803A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2762662A (en) * | 1951-04-26 | 1956-09-11 | Jerome J Sloyan | Slidable supports |
| KR100387481B1 (en) * | 2000-12-30 | 2003-06-18 | 현대자동차주식회사 | Clamping apparatus for inserting steering gear box of vehicles |
-
0
- US US132803D patent/US132803A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2762662A (en) * | 1951-04-26 | 1956-09-11 | Jerome J Sloyan | Slidable supports |
| KR100387481B1 (en) * | 2000-12-30 | 2003-06-18 | 현대자동차주식회사 | Clamping apparatus for inserting steering gear box of vehicles |
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