US100910A - Improved draw-bridge - Google Patents
Improved draw-bridge Download PDFInfo
- Publication number
- US100910A US100910A US100910DA US100910A US 100910 A US100910 A US 100910A US 100910D A US100910D A US 100910DA US 100910 A US100910 A US 100910A
- Authority
- US
- United States
- Prior art keywords
- bridge
- draw
- improved draw
- section
- span
- 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
- 230000003028 elevating Effects 0.000 description 6
- 210000002832 Shoulder Anatomy 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 230000036633 rest Effects 0.000 description 2
- 230000000284 resting Effects 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
- E01D15/02—Vertical lift bridges
Definitions
- My improvement consists essentially of a tubular or Vother bridge sectiouor sections, which, when greater headway is desired, is capable ot' being elevated bodily by hydraulic cylinders, or other mechanical devices.
- Figure 1 is a partly sectionized longitudinal elevation ot'a bridge-span with my supporting and elevating devices.
- Figure 2 is a vertical section at the line x-a.
- a A' represent twopiers.
- B is a bridge-span or section, and may be, a metallic or wooden truss-trunk or tube of any one of the rigid forms now customarily employed.
- the section B when in its normaler lowest position, rests on suitable shoulders, a, in the piers, and when elevated from said shoulders is contined in vertical guides C, in said piers.
- D D are hydraulic cylinders or jacks, of which there is-oue .or more under each end of the span.
- jacks being operated by a steam-engine or other suitable power, are employed to elevate the section bodily whenever a greater headway is desired below the bridge.
- Counterbalances E attached to the movable span B by chains or wire cables G, passing over pulleys l" may be employed to relieve the elevating mechanism oi' unnecessary labor.
- Two or more elevatable sections maybe used in ⁇ one bridge.
- My drawer has, over the customary form of swinging draw-bridge, several advantages, among the most prominent of which is the avoidance of a pivot-pier, which, in the common form, diminishes the available passage more than one-halt', and is costly of construction.
- a draw-bridge consistingof a rigid and elevatable section, guided and operated substantially as set forth.
- a bridge having one or more sections capable of temporary elevation, as and for the purpose set forth.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Description
@initrd itzsutfi @tutti @Mitre NEIL MAONEALE, OliVOl-NCINNAII, OHIO.
` Letters Patent No. 100,910, elated March 15, 1870.
IMPROVE!) DRAW-BRIDGE.
, The Schedule referred to in these Letters Patent and making part of the same.
To whom. 'it may concern Beit known that I, NE1L MACXEALE, of Cincinnati, Hamilton county, Ollio, have\invented a new and useful 1m provenient in Draw-Bridges; and I hereby declare the ibllowiug to be a full, clear, and exact description thereof, reference being had to the accompanying drawings making part ofths specificat-ion.
My improvement consists essentially of a tubular or Vother bridge sectiouor sections, which, when greater headway is desired, is capable ot' being elevated bodily by hydraulic cylinders, or other mechanical devices.
Figure 1 is a partly sectionized longitudinal elevation ot'a bridge-span with my supporting and elevating devices.
Figure 2 is a vertical section at the line x-a.
A A' represent twopiers.
B is a bridge-span or section, and may be, a metallic or wooden truss-trunk or tube of any one of the rigid forms now customarily employed.
The section B, when in its normaler lowest position, rests on suitable shoulders, a, in the piers, and when elevated from said shoulders is contined in vertical guides C, in said piers.
D D are hydraulic cylinders or jacks, of which there is-oue .or more under each end of the span.
These jacks, being operated by a steam-engine or other suitable power, are employed to elevate the section bodily whenever a greater headway is desired below the bridge. v
Counterbalances E, attached to the movable span B by chains or wire cables G, passing over pulleys l", may be employed to relieve the elevating mechanism oi' unnecessary labor.
While preferring the hydraulic jack for the elevating instrumentality, it is proper to state that the object may be accomplished by means oi' screws, or the direct action of steam itself.
Two or more elevatable sections maybe used in `one bridge.
My drawer has, over the customary form of swinging draw-bridge, several advantages, among the most prominent of which is the avoidance of a pivot-pier, which, in the common form, diminishes the available passage more than one-halt', and is costly of construction.
Another advantage of my form` exists in the fact. oi its greater security against winds, e., because of its ends being always securely heldby the piers when elevated, as much as in its resting position.
I claim herein as new and of my invention- 1. A draw-bridge, consistingof a rigid and elevatable section, guided and operated substantially as set forth.
2. A bridge, having one or more sections capable of temporary elevation, as and for the purpose set forth.
1n testimony of which invention I have hereunto set luy-hand.
NEIL MACNEALE.
Witnesses GEO. H. KNIGHT, JAMns H. LAYMAX.
Publications (1)
Publication Number | Publication Date |
---|---|
US100910A true US100910A (en) | 1870-03-15 |
Family
ID=2170377
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US100910D Expired - Lifetime US100910A (en) | Improved draw-bridge |
Country Status (1)
Country | Link |
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US (1) | US100910A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3466686A (en) * | 1967-05-17 | 1969-09-16 | Earle F Allen | Method and means for moving structures hydraulically |
-
0
- US US100910D patent/US100910A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3466686A (en) * | 1967-05-17 | 1969-09-16 | Earle F Allen | Method and means for moving structures hydraulically |
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