US492873A - Rudder - Google Patents
Rudder Download PDFInfo
- Publication number
- US492873A US492873A US492873DA US492873A US 492873 A US492873 A US 492873A US 492873D A US492873D A US 492873DA US 492873 A US492873 A US 492873A
- Authority
- US
- United States
- Prior art keywords
- rudder
- rudders
- frame
- planks
- strength
- 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
- 210000000614 Ribs Anatomy 0.000 description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 239000002023 wood Substances 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000002844 continuous Effects 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 230000003247 decreasing Effects 0.000 description 2
- 239000011121 hardwood Substances 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
- B63H25/06—Steering by rudders
- B63H25/38—Rudders
Definitions
- My present invention relates to various new and useful improvements in the construction of rudders.
- the principal object sought to be attained by the use of my invention is to produce a 'rudder which can be manufactured more economically than former rudders and which at the same time will be lighter and stronger than said former rudders.
- rudders have been composed of an outside iron or steel frame having one or more longitudinal or cross ribs which are placed where the greatest strain occurs, and with an interior surface of wood.
- the wood is used simply as a packing and did not in any way increase the strength of the rudder, since it was necessarily cut at the cross ribs so that the strength of the rudder depended solely upon the cross ribs.
- Figure l- is an elevation partly in section of a balanced rudder made in accordance with my improved plan of construction, and Fig. 2-a sectional view of the same.
- A is a heavy iron or steel frame which may be cast or worked into the proper shape.
- This frame is provided at its upper portion with a stock B, which may be either cast in position on the frame or welded or secured thereto in any suitable manner.
- a pintle C At the lower end of the frame A is the usual pintle C.
- D, D are heavy hard wood planks which are fitted within the outside frame A; and which are preferably arranged in a vertical position. These planks are throughout, and are preferably ot' a gradual thickness from each side to the center as shown in Fig. 2. It is also desirable that the planks be decreased gradually in thickness from the center to the top, andto the bottom, although it' desired they may be of. the same thickness throughout.
- E, E,V is heavy metal covering on each side of the planks D, and which is secured in place by means of rivets or bolts, a, d, passing through the edges of each covering or plate and through the outside frame A.
- l make use of additional bolts or rivets b, b, which extend through both coverings or plates E, E, and through the planks D, D.
- the interior planks D will swell under the action of the waterso as to tit very tightly within the frame A, and between the coverings or plates E, E.
- This rudder maybe made cheaper than other rudders because the usual cross ribs are dispensed with. It will be stronger .than other rudders because the entire strength of the planks D, D, will be ob-v tained and also the coverings E, E, will add strength to the rudder.
- An improved rudder consisting of a metallic contin uous frame A, planks D, continuous throughout, arranged vertically Within said frame and an outer metallic covering E, ⁇
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Toys (AREA)
Description
(No Model.)
A. MGDOUGALL.
RUBBER.
N0- 492,8'73. Patented Mar. '7, 1893.
UNITED STATES PATENT OFFICE.
ALEXANDER MCDOUGALL, OF DLUTILlVIINNESOTA.
RUDDER.
SPECIFICATION forming part of Letters Patent No. 492,873, dated March 7, 1893. Application tiled September 17, 1891. Serial No. 40G-,012. (No model.)
To all whom t may concern:
Be it known that I, ALEXANDER MoDoU- GALL, a citizen of the United States, residing at Duluth, in the county of St. Louis and State of Minnesota, haveinvented certain new and useful Improvements in Rudders; and I do hereby declare the following to be a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.
My present invention relates to various new and useful improvements in the construction of rudders. Y
The principal object sought to be attained by the use of my invention is to produce a 'rudder which can be manufactured more economically than former rudders and which at the same time will be lighter and stronger than said former rudders.
Heretofore rudders have been composed of an outside iron or steel frame having one or more longitudinal or cross ribs which are placed where the greatest strain occurs, and with an interior surface of wood. In these rudders the wood is used simply as a packing and did not in any way increase the strength of the rudder, since it was necessarily cut at the cross ribs so that the strength of the rudder depended solely upon the cross ribs. In the present invention, I propose to dispense with the cross ribs or ribs and to make the wooden interior continuous so that the wood will add very materially to the strength of the rudder. I also propose to make use of an outside metallic covering over the wood which will also increase the strength of the rudder and add to its general appearance.
Forabetter comprehension of my invention, attention is directed to the accompanying drawings forming a part of this specification, and in which,
Figure l-is an elevation partly in section of a balanced rudder made in accordance with my improved plan of construction, and Fig. 2-a sectional view of the same.
In both of the above views corresponding parts are designated by the same letters of reference.
Before beginning the description of my present invention it should be understood that not only balanced rudders but rudders of all varieties may be used in accordance withrny invention.
A, is a heavy iron or steel frame which may be cast or worked into the proper shape. This frame is provided at its upper portion with a stock B, which may be either cast in position on the frame or welded or secured thereto in any suitable manner. At the lower end of the frame A is the usual pintle C.
D, D, are heavy hard wood planks which are fitted within the outside frame A; and which are preferably arranged in a vertical position. These planks are throughout, and are preferably ot' a gradual thickness from each side to the center as shown in Fig. 2. It is also desirable that the planks be decreased gradually in thickness from the center to the top, andto the bottom, although it' desired they may be of. the same thickness throughout.
E, E,V is heavy metal covering on each side of the planks D, and which is secured in place by means of rivets or bolts, a, d, passing through the edges of each covering or plate and through the outside frame A.
In order to further strengthen the rudder, l make use of additional bolts or rivets b, b, which extend through both coverings or plates E, E, and through the planks D, D. Whenl in use, the interior planks D will swell under the action of the waterso as to tit very tightly within the frame A, and between the coverings or plates E, E. This rudder maybe made cheaper than other rudders because the usual cross ribs are dispensed with. It will be stronger .than other rudders because the entire strength of the planks D, D, will be ob-v tained and also the coverings E, E, will add strength to the rudder.
Having now described my invention, what I claim as new therein, and desire to secure by Letters Patent, is as follows:
An improved rudder, consisting of a metallic contin uous frame A, planks D, continuous throughout, arranged vertically Within said frame and an outer metallic covering E,`
on each side of the planks D, and riveted thereto and tothe continuous frame, substantially as described.
C. E. WACHTEL,
CHARLES W. LELAND.
continuous.
Publications (1)
Publication Number | Publication Date |
---|---|
US492873A true US492873A (en) | 1893-03-07 |
Family
ID=2561716
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US492873D Expired - Lifetime US492873A (en) | Rudder |
Country Status (1)
Country | Link |
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US (1) | US492873A (en) |
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0
- US US492873D patent/US492873A/en not_active Expired - Lifetime
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