US404718A - Coffer-dam - Google Patents
Coffer-dam Download PDFInfo
- Publication number
- US404718A US404718A US404718DA US404718A US 404718 A US404718 A US 404718A US 404718D A US404718D A US 404718DA US 404718 A US404718 A US 404718A
- Authority
- US
- United States
- Prior art keywords
- dam
- doors
- coffer
- hinged
- gates
- 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
- 238000010276 construction Methods 0.000 description 6
- 238000007667 floating Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPINGÂ
- B63B17/00—Vessels parts, details, or accessories, not otherwise provided for
- B63B17/0018—Arrangements or devices specially adapted for facilitating access to underwater elements, e.g. to propellers ; Externally attached cofferdams or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPINGÂ
- B63B81/00—Repairing or maintaining vessels
Definitions
- This invention relates to improvements in coifer-dams; and the invention consists of a cotter-dam constructed in the manner herein shown, described, and claimed.
- Figure 1 is a plan or top view of the cofferdam; Fig. 2, a cross-section of same; Fig. 3, an end view showing gates; Fig. 4, elevation of sliding gate.
- This invention is mainly an improvement on the colfer-dam heretofore patented by me 011 the 31st of January, 1882, in Patent No. 253,067.
- the hinged gates are shown only on the upper sect-ion of the dam, the lower section being closed by bulk-heads.
- This construction answered the purpose for an ordinary steamer provided with but one screw placed in line with the keel of the ship; but since the introduction of this dam vessels with the so-called twin screws are to the sides of the dam as far as the ballast.
- the gates A hinged to the sides of the dam and extending from the top to the bottom of the dam, said gates having oblique bottom edges, as and for the purpose described.
Description
2 Sheets-Sheet 1.
(No Model.)
' H. P. KIRKHAM.
COPPER DAM.
Patented June 4; 1889.
22/52 i l'l 1! r 1 i, ll.
WITNESSES:
v ATTORNEY H. PErERs. Phnto-Lilhngnpher, wamingwn. DC.
(No Model.) 2 Sheets-Sheet H. P. KIRKHAM.
COPPER DAM No. 404,718. Patented June 4, 1889 WITNESSES.
ATTORNEY N. PETERS. Pholc-Lilhogmphnr, washin mn. D. c.
UNITED STATES PATENT OFFICE.
HENRY P. KIRKIIAM, OF BROOKLYN, NEIV YORK.
COFFER-DAM.
SPECIFICATION forming part of Letters Patent No. 404,718, dated June 4, 1889.
Application filed May 15, 1888. Serial No. 273,969. (No model.)
, specification.
This invention relates to improvements in coifer-dams; and the invention consists of a cotter-dam constructed in the manner herein shown, described, and claimed.
In the accompanying sheet of drawings, Figure 1 is a plan or top view of the cofferdam; Fig. 2, a cross-section of same; Fig. 3, an end view showing gates; Fig. 4, elevation of sliding gate.
Similar letters of reference indicate like parts in the several figures.
This invention is mainly an improvement on the colfer-dam heretofore patented by me 011 the 31st of January, 1882, in Patent No. 253,067. In that patent the hinged gates are shown only on the upper sect-ion of the dam, the lower section being closed by bulk-heads. This construction answered the purpose for an ordinary steamer provided with but one screw placed in line with the keel of the ship; but since the introduction of this dam vessels with the so-called twin screws are to the sides of the dam as far as the ballast.
tanks B will permit, and then slope off the lower part of the hinged doors to correspond to the shape of the tanks. The advantage of this form of hinged door is that when the coffer-dam is used in shallow waterin which case it may rest upon the bottom of the harbor before the doorsA are closed preparatory to pumping out and floating the dam in place under the ship-there can be no danger that the closing of the doors and the subsequent operation of the dam would be seriously interfered with by the mud, &c., that might be scraped up by doors of another form in the process of closing them. This difficulty could not occur with the dam as shown in the patent above mentioned, because of the closed bulk-heads B, above which the doors were hinged; but such construction would not admit a ship with twin screws, and to adapt the dam to vessels having such screws and to prevent the doors in shallow water from scraping up the bottom, I hinge the doors to the edges a of the dam, so that I can have the largest possible opening and let their bottoms extend to and follow the form of the ballasttanks B, which practically form the sills of the doors.
The other features of the construction of my dam improved as described, not differing materially from such features patented by me as aforesaid, I need not again describe.
Having now described my invention, what I claim as new, and desire to Secure by Letters Patent, is
In a coifer-dam, the gates A, hinged to the sides of the dam and extending from the top to the bottom of the dam, said gates having oblique bottom edges, as and for the purpose described.
HENRY P. KIRKHAM.
In presence of I). A. CARPENTER, G. M. FIELD.
Publications (1)
Publication Number | Publication Date |
---|---|
US404718A true US404718A (en) | 1889-06-04 |
Family
ID=2473668
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US404718D Expired - Lifetime US404718A (en) | Coffer-dam |
Country Status (1)
Country | Link |
---|---|
US (1) | US404718A (en) |
-
0
- US US404718D patent/US404718A/en not_active Expired - Lifetime
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US404718A (en) | Coffer-dam | |
US2174989A (en) | Hatchway | |
US1416308A (en) | Locking device for water-tight doors | |
US867294A (en) | Submarine boat. | |
US791285A (en) | Electric boat or launch. | |
US1398825A (en) | Dock | |
US526190A (en) | Max moeser | |
US395265A (en) | Coffer | |
US352275A (en) | John speies | |
US1699938A (en) | Whale-oil-refinery vessel | |
US1109366A (en) | Lock-canal marine toy. | |
US1211287A (en) | Door for silos. | |
US995862A (en) | Dry-dock. | |
GB189817443A (en) | Improved Means for Automatically Closing Bulkhead and other Water-tight Doors. | |
US1188436A (en) | Submarine boat. | |
US1129751A (en) | Life-saving apparatus. | |
US1107933A (en) | Lock construction for waterways. | |
GB191211669A (en) | Improvements in or relating to Ships and similar Structures. | |
US979004A (en) | Cistern-cover. | |
US784286A (en) | Hopper-barge. | |
CN205707266U (en) | A kind of wave resistance exhaustor | |
US1397527A (en) | Scow | |
GB115814A (en) | Improvements in or relating to Building Docks for Ships or Vessels. | |
US207505A (en) | Improvement in construction of vessels | |
GB629626A (en) | An improved hinged cover for ships' hatchways |