Joints and connections – Rotarily connected – differentially translatable members,...
Patent
1999-04-22
2000-12-19
Kim, Harry C.
Joints and connections
Rotarily connected, differentially translatable members,...
403 45, 410100, F16B 706
Patent
active
061619817
DESCRIPTION:
BRIEF SUMMARY
The subject invention is directed to a turnbuckle comprising a first and a second fastening means, each with an end fitting and a rod-shaped portion, at least one of which portions is formed with external threads, and a tightening device including a pair of outer end pieces, each piece having a through-hole therein, at least one of which is formed with threads, the threaded portion(s) of the fastening means being in screw engagement with the corresponding hole(s) in the tightening device.
More precisely, the invention relates to a so-called lashing rod of turnbuckle type designed to secure loads, preferably containers, for example to a ship's deck, said fastening means intended to be anchored by means of their end fittings in attachment elements provided respectively on the container and the ship's deck.
Instead of wires, chains and the like to lash or secure loads, such as containers, machinery, vehicles etc., to a ship's deck, lorries and the like, lashing rods are employed today because they are safer to use, save time and are easier to stow away.
One version of a lashing rod is already known from the Swedish Patent Publication 7609564-5 (Published Specification 411,438). The lashing rod comprises one or several part rods that have to be adjusted to the length of the lashing, i.e. to the distance between the corresponding attachment elements, on the container and in the ship loading space, respectively. Precision adjustment of the lashing is effected with the aid a turnbuckle positioned at one end of the lashing rod. Consequently, the use of this prior-art lashing rod requires access to a supply of part rods of various lengths in order to allow adaptation of the lashing rods to containers of various dimensions.
In accordance with another embodiment, the lashing rod is shaped like a gigantic turnbuckle having a proportionally designed sleeve device (tightening device) or else having a sleeve device of unproportional length to provide larger intervals in the length of the lashing. These traditional "long stroke" turnbuckles cause operational problems. The bolt parts of the end fittings are short, making them difficult to handle when inserted in or removed from the container corner boxes. On the other hand, long bolt portions involve time-consuming "screwing" operations and also larger weight. In addition, they cause problem when the turnbuckle is to be stored in "position of rest".
The purpose of the subject invention is to provide a turnbuckle or lashing rod which may easily assume at least two widely different elongation conditions.
A further purpose of the invention is to provide a lashing rod which may be easily stowed away and eliminates the current problems in connection with storage in "position of rest".
Yet another purpose is to provide a turnbuckle or lashing rod which is comparatively easy to handle.
These purposes are achieved in accordance with the invention by means of a turnbuckle of the kind outlined in the introductory paragraph and which is characterised in that the tightening device comprises a pair of cooperating tightening members in nesting relationship, that each tightening member comprises one outer end piece and one inner end piece, that the second inner end piece is formed with a threaded through-hole for screw engagement with the threaded portion of the first fastening means, and in that the tightening device is arranged to assume at least two different elongation conditions, so that, in the shorter condition, the threaded part of the first fastening means is in screw engagement with the threaded hole of the second inner end piece and, in the longer condition, said last screw engagement is interrupted and the tightening members displaced in the longitudinal direction of the tightening device, thereby causing the inner faces of the two inner end pieces to come into abutting relationship.
Further developments of the invention will appear from the characteristic features defined in the dependent claims.
Preferred embodiments of the invention will be described for exemplifying purpo
REFERENCES:
patent: 1386109 (1921-08-01), Hatfield
patent: 3051519 (1962-08-01), Sudeikis
patent: 3278210 (1966-10-01), Sanders
patent: 4081219 (1978-03-01), Dykmans
patent: 4537388 (1985-08-01), McCabe
All Set Marine Lashing AB
Kim Harry C.
LandOfFree
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