US113471A - Improvement in ships trestle-trees - Google Patents
Improvement in ships trestle-trees Download PDFInfo
- Publication number
- US113471A US113471A US113471DA US113471A US 113471 A US113471 A US 113471A US 113471D A US113471D A US 113471DA US 113471 A US113471 A US 113471A
- Authority
- US
- United States
- Prior art keywords
- trestle
- tree
- trees
- ships
- improvement
- 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
- 239000002965 rope Substances 0.000 description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 239000002023 wood Substances 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 4
- 210000001138 Tears Anatomy 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 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 SHIPPING
- B63B15/00—Superstructures, deckhouses, wheelhouses or the like; Arrangements or adaptations of masts or spars, e.g. bowsprits
- B63B15/02—Staying of masts or of other superstructures
Definitions
- Fgure l represents the mast-headwith the trestl'e ⁇ tree and cross-tree so constructed as to give room for the ropes called peak-halliards, and also showing Yfriction-rollers to prevent the ropes chafing on the trstletrees.
- Figure 2 shows the under side of. a trestle-tree made to t a square shoulder of the mast-head.
- Figure 3 shows the square shoulder of the masthead.
- my invention consists of making a cross-tree of such a crooked shape that the ropes have free play without chafing when the ⁇ sails are hoisted or lowered; and to give strength to this cross-tree I make the under side of iron and the vtop of wood, the wood being more safe to stand upon; or, iffmade wholly of iron, the top side is roughened, so that a man may stand upon it Without slipping.
- I also attach friction-rollers to the cross-trees or trestle-trees to prevent the rope from rubbing on the trestle-tree.
- Letter D marks an elastic packing inQcomhination with the metallic trestle-tree and wire-shrouds.
- the object of making a metallic trestle-tree with a square shoulder is to adapt it to the standing mastnow in use without lowering or cutting away the shoulder of the same.
- a metallic trestle-tree is a baud of strength to an old mast.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Emergency Lowering Means (AREA)
Description
timidi HENRY TOWNSEND, OF PHILADELPHIA, PENNSYLVANIA.
Letters Patent No. 113,471, dated April 4, 1871 entedated March 22, 1871.
IMPROVEMENT IN SHIPS TRESTLE-TREES.V
The Schedule referred to in these Letters Pat-ent and making part of the same.
' To all whom it 'may concern:
Be it known that I, HENRY TowNsEND, ofthe city and county of'Bhiladelphia and State of Pennsylvania, have invented Improvements in Trestle-Trees .and Ship-Rigging; and tlp hereby declare the following i to be a full and correct description ofthe same, reference being had to the acceropanying drawings, in which;-
Fgure l represents the mast-headwith the trestl'e` tree and cross-tree so constructed as to give room for the ropes called peak-halliards, and also showing Yfriction-rollers to prevent the ropes chafing on the trstletrees.
Figure 2 shows the under side of. a trestle-tree made to t a square shoulder of the mast-head.
Figure 3'shows the square shoulder of the masthead.
lhe nature of my invention consists of making a cross-tree of such a crooked shape that the ropes have free play without chafing when the `sails are hoisted or lowered; and to give strength to this cross-tree I make the under side of iron and the vtop of wood, the wood being more safe to stand upon; or, iffmade wholly of iron, the top side is roughened, so that a man may stand upon it Without slipping.
I also attach friction-rollers to the cross-trees or trestle-trees to prevent the rope from rubbing on the trestle-tree. Y
.To enable others to understand my invention I refer to the drawings, in which Letter A marks the cross-tree.
'Letters B B, the friction-rollers.`
Letter D marks an elastic packing inQcomhination with the metallic trestle-tree and wire-shrouds.
The object of making a metallic trestle-tree with a square shoulder is to adapt it to the standing mastnow in use without lowering or cutting away the shoulder of the same. By this means a metallic trestle-tree is a baud of strength to an old mast.
It is well known to seamen, the great wear and tear of' ropes by ehafing upon the cross-tree as the sails are hoisted and lowered. Therefore, `a cross-tree of this peculiar shape is very essential to allow the ropes free play; and it will be seen by the drawings herewith r thatk this plate of-metal, in combination with the wood,
gives-great strength to a cross-tree of this shape, as herein described. y
Gleim.
The above specification of my said invention signed and witnessed at Philadelphia this 16th day of December, A. D. 1869.
HENRY TOWNSEND,
Witnesses:
OWEN MeDoNALD, JOSEPH BAYMORE.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US113471A true US113471A (en) | 1871-04-04 |
Family
ID=2182936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US113471D Expired - Lifetime US113471A (en) | Improvement in ships trestle-trees |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US113471A (en) |
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0
- US US113471D patent/US113471A/en not_active Expired - Lifetime
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