US22432A - Spring tackle-block - Google Patents
Spring tackle-block Download PDFInfo
- Publication number
- US22432A US22432A US22432DA US22432A US 22432 A US22432 A US 22432A US 22432D A US22432D A US 22432DA US 22432 A US22432 A US 22432A
- Authority
- US
- United States
- Prior art keywords
- block
- spring
- strap
- tackle
- seat
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 244000286663 Ficus elastica Species 0.000 description 2
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000036461 convulsion Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229920001195 polyisoprene Polymers 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
Definitions
- Figure 1 represents a view, in perspective, of my improved block.
- Fig. 2 represents a longitudinal section
- Figs. 3 and 4 are respectively transverse sections of the same, at the line 00, a, and a2, 00, of Fig. 2
- Fig. 5 represents a view in perspective of a modified guide for the strap of the block to slide 1n.
- A is the block.
- B is the spring, in this instance, made of india rubber.
- D is a plate across the head of the block, making part of the strap, connected with the other part by screws and nuts at a, and Z), for'convenience of taking apart and putting together.
- E is the eye to connect the block with the boom, the deck, or other point of attachment.
- F is a pin, attached at one end to the block and passing through the spring, with the other end extending through an aperture in the seat of the strap. This pin is to secure the spring in its place.
- G, G are plates fastened to the sides of the block, with projections that embrace the strap, to keep the block and strap in the proper relative positions and to allow the block to slide within the strap during the compression and expansion of the spring.
- the construction is as follows. I take an ordinary, unstrapped ships block; but instead of strapping it as ordinary blocks are strapped, by having the iron strap to fit close to all the four sides of the block, I make the strap in the form of a stirrup of the same width as the block to allow the block to slide up and down in it. I then prepare four plates of metal, and let two of them into each side of the block and near its end; and connect each pair of opposite plates by a through rivet. There are two projections on each plate to embrace the strap that form a groove on each side of the block to keep the strap and block in the proper relative positions, and allow the block to slide endwise in the strap. I then place an indiarubber or steel spring within the strap, and between the seat of the strap and the seat of the block. The spring is kept in its place by the pin passing through its center having one end secured to the seat of the block, and the other end passing into a hole in the strap, through which it pro trudes, and is retained during the compression and expansion of the spring.
- the spring shall be sufliciently compressed while at rest to resist the force of ordinary strains and shall yield only under the extra strain produced by such shocks and irregular movements as would, but for such, yielding, cause a dangerous jerking of the tackle.
- a block having a yielding seat substantially as set forth.
Description
W/MJ
UNITED STATES PATENT OFFICE.
OBED' HUSSEY, OF BALTIMORE, MARYLAND.
SPRING TACKLE-BLOCK.
Specification of Letters Patent No. 22,432, dated December 28, 1858.
To all whom it may concern;
Be it known that I, OBED I-IUssEY, of Baltimore, in the State of Maryland, have invented a new and useful Improvement in Blocks for Ships and for other Purposes.
It is well known to seamen that the booms of fore-and-aft sails will often swing out with great force, and bring up on the tackle with a jerk; to the great risk of the blocks, the ropes, the ring-bolts, and of the boom itself.
The object of this improvement is to relieve this jerk by a peculiarity in the construction of the block, which renders it elastic in the direction of the pull; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawing, making a part of this specification, in which Figure 1 represents a view, in perspective, of my improved block. Fig. 2 represents a longitudinal section, and Figs. 3 and 4 are respectively transverse sections of the same, at the line 00, a, and a2, 00, of Fig. 2, and Fig. 5 represents a view in perspective of a modified guide for the strap of the block to slide 1n.
A, is the block.
B, is the spring, in this instance, made of india rubber.
(J, is the iron strap inclosing the block and the spring.
D is a plate across the head of the block, making part of the strap, connected with the other part by screws and nuts at a, and Z), for'convenience of taking apart and putting together.
E, is the eye to connect the block with the boom, the deck, or other point of attachment.
F is a pin, attached at one end to the block and passing through the spring, with the other end extending through an aperture in the seat of the strap. This pin is to secure the spring in its place.
G, G, are plates fastened to the sides of the block, with projections that embrace the strap, to keep the block and strap in the proper relative positions and to allow the block to slide within the strap during the compression and expansion of the spring.
The construction is as follows. I take an ordinary, unstrapped ships block; but instead of strapping it as ordinary blocks are strapped, by having the iron strap to fit close to all the four sides of the block, I make the strap in the form of a stirrup of the same width as the block to allow the block to slide up and down in it. I then prepare four plates of metal, and let two of them into each side of the block and near its end; and connect each pair of opposite plates by a through rivet. There are two projections on each plate to embrace the strap that form a groove on each side of the block to keep the strap and block in the proper relative positions, and allow the block to slide endwise in the strap. I then place an indiarubber or steel spring within the strap, and between the seat of the strap and the seat of the block. The spring is kept in its place by the pin passing through its center having one end secured to the seat of the block, and the other end passing into a hole in the strap, through which it pro trudes, and is retained during the compression and expansion of the spring.
It is designed that in the operation of this improvement the spring shall be sufliciently compressed while at rest to resist the force of ordinary strains and shall yield only under the extra strain produced by such shocks and irregular movements as would, but for such, yielding, cause a dangerous jerking of the tackle.
I am aware that springs have been interposed between blocks and the fixed or movable eyebolt or body to which they were attached. Such an arrangement of a spring without the block is obviously an essentially difierent thing from my improved block with a spring within it.
Of course I do not confine myself to any special form or arrangement of the strap and the block, or of either (as these may be indefinitely varied) so long as the block is constructed with a seat to yield to the force of sudden shocks, and, thereby, prevent the dangerous erks, which, as before described, it is the object of my invention to prevent.
What I claim as new and desire to secure by Letters Patent is,
A block having a yielding seat substantially as set forth.
In testimony whereof I have hereunto subscribed my name.
OBED I-IUSSEY.
Witnesses:
C. H. BAWDEN, GEORGE EVERHART.
Publications (1)
Publication Number | Publication Date |
---|---|
US22432A true US22432A (en) | 1858-12-28 |
Family
ID=2088982
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US22432D Expired - Lifetime US22432A (en) | Spring tackle-block |
Country Status (1)
Country | Link |
---|---|
US (1) | US22432A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4450946A (en) * | 1981-09-08 | 1984-05-29 | Minster Machine Company | Press speed control and indication system |
-
0
- US US22432D patent/US22432A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4450946A (en) * | 1981-09-08 | 1984-05-29 | Minster Machine Company | Press speed control and indication system |
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