US104295A - Improvement in truss-frame bridges - Google Patents
Improvement in truss-frame bridges Download PDFInfo
- Publication number
- US104295A US104295A US104295DA US104295A US 104295 A US104295 A US 104295A US 104295D A US104295D A US 104295DA US 104295 A US104295 A US 104295A
- Authority
- US
- United States
- Prior art keywords
- truss
- box
- improvement
- frame bridges
- plates
- 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
- 229910001018 Cast iron Inorganic materials 0.000 description 4
- 238000005266 casting Methods 0.000 description 4
- 101710002757 HARS1 Proteins 0.000 description 2
- 210000000614 Ribs Anatomy 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000002023 wood Substances 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
- ⁇ Iy invention consists of a cast-iron box, arranged 'for the reception and securing together' of'the lower or upper chord-rods and diagonals and counter-diagonals ot'a truss-frame bridge,rin the manner described hereafter, with a view to generalsimplicity and economy as regards construction.
- A, A1, and A? are three continuous fiat bars, ing together the lower chord of a.
- truss-f ⁇ rame and B is a cast-iron box, composed ot' the upper and lower horizontal plates o and a', connected together, by the end ver'tical plates b and b', and the intermediate vertical plates l and ll, the whole being ⁇ cast in oncpiece.
- the outer hars A and A2 of the lower chord fit snugly between projecting ribs e e, which form parts ofthe upper and lower plates of the box, and against the outer vertical plates of the latter, while the intermediate bar A of the lower chord passes and tits snugly between the two intermediate plates d and d ofthe box.
- Two bolts, f f pass through the box and through the lower chord rods, thus serving to bind the whole firmly together'.
- n. nn having circular recesses for receiving the lower ends of the tubular diagouals on', and inclined iu a. contrary direction on the top of the box are projections n. n, for' receiving the tubular counter-diagonale ⁇ n. n', -through which, and through the box, pass the diagonal rods p, furnished at their lower ends with nuts q, bearing against inclined projections on the uuder side of the box, these diagonal tie-rodspassing through the box at such points as not to interfere with its vertical plates and transverse bolts.
- B represents a somewhat modified forni 0f box a'dapted for application to the upper chords of a. bridge; but two chords, A and A* are shown in this case, it being intended to use a filling of wood between them at each end of the box, and the space :v within the latter' may also be filled, if' desired.
- the casting may, in bridges of alarge size, be made to receive two, or even more than two, intermediate chord-rods, or three, or more than three, diagonals and counter-diagonals, without any departure from the main characteristics of my invention.
- the box B consisting ofthe ripper' and lower plates ay o', vertical plates b b' d ll', and recessed projections 1n m','all constructed and arranged as described.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Artificial Fish Reefs (AREA)
Description
llfI-nittd ttt-tts strut @Win12,
Leners Parent N .104,295', and .rime 14, 1870.
IMPROVEMENT IN TRUSS-FRAME BRDGES.
The Sehec'lue referred. to n these Letters Patent and making part of the same I, J om.' FonmrAx, of Pottstown, county of Montgomery, State ot'Pennsylvania, have invented an Irnprovement iu Truss-frame Bridges, of which the following is a specification.
Nature and Object ofthe In rcntion.
` )Iy invention consists of a cast-iron box, arranged 'for the reception and securing together' of'the lower or upper chord-rods and diagonals and counter-diagonals ot'a truss-frame bridge,rin the manner described hereafter, with a view to generalsimplicity and economy as regards construction.
General Description.
form bridge,
A, A1, and A? are three continuous fiat bars, ing together the lower chord of a. truss-f`rame and B is a cast-iron box, composed ot' the upper and lower horizontal plates o and a', connected together, by the end ver'tical plates b and b', and the intermediate vertical plates l and ll, the whole being` cast in oncpiece. A
The outer hars A and A2 of the lower chord fit snugly between projecting ribs e e, which form parts ofthe upper and lower plates of the box, and against the outer vertical plates of the latter, while the intermediate bar A of the lower chord passes and tits snugly between the two intermediate plates d and d ofthe box.
Two bolts, f f, pass through the box and through the lower chord rods, thus serving to bind the whole firmly together'.
In the top of the box are two inclined projections,
m. nn having circular recesses for receiving the lower ends of the tubular diagouals on', and inclined iu a. contrary direction on the top of the box are projections n. n, for' receiving the tubular counter-diagonale` n. n', -through which, and through the box, pass the diagonal rods p, furnished at their lower ends with nuts q, bearing against inclined projections on the uuder side of the box, these diagonal tie-rodspassing through the box at such points as not to interfere with its vertical plates and transverse bolts. In fig. 4, B represents a somewhat modified forni 0f box a'dapted for application to the upper chords of a. bridge; but two chords, A and A* are shown in this case, it being intended to use a filling of wood between them at each end of the box, and the space :v within the latter' may also be filled, if' desired.
It will be seen, without further description, that one casting of simple characteris made the mediunr of rcceivinr,r and securing,r together the chord-rods and diagonals of a truss-frame bridge. p
The casting may, in bridges of alarge size, be made to receive two, or even more than two, intermediate chord-rods, or three, or more than three, diagonals and counter-diagonals, without any departure from the main characteristics of my invention.
Claim..
The box B, consisting ofthe ripper' and lower plates ay o', vertical plates b b' d ll', and recessed projections 1n m','all constructed and arranged as described.
In testimony whereof I have signed my name to this specification inthe presence ot' twosubscribing witnesses.
.10H3TL FOREMAN.
Witnesses;
Josrrclx Bruns, Maru rAs Gnrs'r.
Publications (1)
Publication Number | Publication Date |
---|---|
US104295A true US104295A (en) | 1870-06-14 |
Family
ID=2173780
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US104295D Expired - Lifetime US104295A (en) | Improvement in truss-frame bridges |
Country Status (1)
Country | Link |
---|---|
US (1) | US104295A (en) |
-
0
- US US104295D patent/US104295A/en not_active Expired - Lifetime
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US104295A (en) | Improvement in truss-frame bridges | |
US114479A (en) | Improvement in bridges | |
US1344646A (en) | Bridge-reinforcement | |
US530425A (en) | Girder for truss-bridges | |
US212941A (en) | Improvement in bridges | |
US399105A (en) | Trussed suspension-bridge | |
US56043A (en) | Improvement in bridges | |
US96569A (en) | Improved bridge | |
US459301A (en) | Bow-bridge sill | |
US113030A (en) | Improvement in bridges | |
US485689A (en) | Truss-bridge | |
US119466A (en) | Improvement in iron-arch bridges | |
US750475A (en) | Construction of bridges | |
US847850A (en) | Timber seat and support. | |
US699981A (en) | Arch-bar. | |
US85171A (en) | Edward m | |
US1019458A (en) | Suspension-bridge. | |
US76041A (en) | Charles bender | |
US185185A (en) | Improvement in wrought-iron bridges | |
US107576A (en) | Improvement in bridges | |
US311167A (en) | Iron grating | |
US222499A (en) | Improvement in bridges | |
US84288A (en) | Improvement in bridges | |
US725308A (en) | Tower for windmills. | |
US99597A (en) | Improved suspension-bridge |