US17031A - Reefing ships sails - Google Patents
Reefing ships sails Download PDFInfo
- Publication number
- US17031A US17031A US17031DA US17031A US 17031 A US17031 A US 17031A US 17031D A US17031D A US 17031DA US 17031 A US17031 A US 17031A
- Authority
- US
- United States
- Prior art keywords
- sail
- reefing
- roller
- sails
- ships
- 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
- 210000000078 Claw Anatomy 0.000 description 8
- 238000010516 chain-walking reaction Methods 0.000 description 2
- 230000003247 decreasing Effects 0.000 description 2
- 239000002965 rope Substances 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H9/00—Marine propulsion provided directly by wind power
- B63H9/04—Marine propulsion provided directly by wind power using sails or like wind-catching surfaces
- B63H9/08—Connections of sails to masts, spars, or the like
- B63H9/10—Running rigging, e.g. reefing equipment
- B63H9/1021—Reefing
- B63H9/1042—Reefing by furling around or inside the boom
Definitions
- My inproyement relates to that class of reeling sails where an eXtra yard is used, the reetng being effected by chains or ropes leading down to the deck of the vesel, so that the sails can be reefed while the men are on deck.
- Figure l represents the ordinary top-sail yard, with the roller O, attached by the bands K and clamps D.
- This roller is turned by the gears C at each end, which gears ⁇ are operated by the pinions J.
- On each end of this roller there is a screw E, these screws are right and left handed as shown, and the pitch of the thread is equal to the increase of the sail in width, so that the leach of the sail will follow the screw, and is kept in place by the claws X, which are under the screws as shown by Fig.y 2.
- the leach or roper on the edge of the sail runs through these claws.
- the claws are secured to a nut on the screws and are kept steady by the end of the nut sliding in a slot in the end of the yard.
- Pinions J are attached to the arbors A which are operated by the endless chain Y passing around the pulleys R, this chain also passes around the pulley L in the middle of the yard. To this pulley is also attached another endless chain running down by the mast to the deck. Pawls P act in the ratchet I and hold the roller as the sail is rolled up. If necessary the arbors A can be turned by the same cranks or wrenches with which the screws B are turned. Clamps D are made as shown in Fig. 3, so that they will close on to the bare roller or can be increased in size so that the sail can be rolled inside of them.
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Wind Motors (AREA)
Description
'UNITED STATES PATENT OFFICE.,
JAMES EMERSON, OI" VORCESTER, MASSACHUSETTS.
REEFING- SHIPS SAILS.
Specification of Letters Patent No. 17,031, dated April 14, 1857'.
To all whom it may concern Be it known that I, JAMES EMERSON, of INforcester, in the county of Vorcester and State of Massachusetts, have invented new and useful Improvements in Reeng Ships Sails; and I do hereby declare that the fol lowing is a full and exact description of the same.
My inproyement relates to that class of reeling sails where an eXtra yard is used, the reetng being effected by chains or ropes leading down to the deck of the vesel, so that the sails can be reefed while the men are on deck.
To enable others skilled in the art to make and use my invention, I will proceed to describe it, and by referring to the annexed drawings, making a part of this specification it will be readily understood.
Figure l represents the ordinary top-sail yard, with the roller O, attached by the bands K and clamps D. This roller is turned by the gears C at each end, which gears `are operated by the pinions J. On each end of this roller there is a screw E, these screws are right and left handed as shown, and the pitch of the thread is equal to the increase of the sail in width, so that the leach of the sail will follow the screw, and is kept in place by the claws X, which are under the screws as shown by Fig.y 2. The leach or roper on the edge of the sail runs through these claws. The claws are secured to a nut on the screws and are kept steady by the end of the nut sliding in a slot in the end of the yard. Pinions J are attached to the arbors A which are operated by the endless chain Y passing around the pulleys R, this chain also passes around the pulley L in the middle of the yard. To this pulley is also attached another endless chain running down by the mast to the deck. Pawls P act in the ratchet I and hold the roller as the sail is rolled up. If necessary the arbors A can be turned by the same cranks or wrenches with which the screws B are turned. Clamps D are made as shown in Fig. 3, so that they will close on to the bare roller or can be increased in size so that the sail can be rolled inside of them.
To reef the sail, one man goes aloft and unscrews the clamps D, then by hauling the endless chain that leads down by the mast on deck the roller O will roll the sail up as fast as the yard is lowered by the halyards. Then the sail is rolled up screw the clamps D tightly to the sail on the roller.y Then wishing to unroll the sail one man go aloft, unscrew the clamps D, lift the pawls P out of the ratchets, then hoist away, but the roller should not be allowed to unroll any faster than the yard is hoisted.
What I claim is- The adjustable clamps D, when arranged so as to be enlarged or decreased as required, secondly I claim the screws E and claws X on the roller C) for spreading the sail.
JAMES EMERSON. Witnesses:
JESSE W. GooDRIcH, Jol-1N J. ONmt.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US17031A true US17031A (en) | 1857-04-14 |
Family
ID=2079160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US17031D Expired - Lifetime US17031A (en) | Reefing ships sails |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US17031A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030113185A1 (en) * | 1994-12-23 | 2003-06-19 | Reinhard Kutschan | Compound dip process for metal cans |
-
0
- US US17031D patent/US17031A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030113185A1 (en) * | 1994-12-23 | 2003-06-19 | Reinhard Kutschan | Compound dip process for metal cans |
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