Spool for thread
AssigneeGutermann & Co. AG
InventorDieter Rottleb
Life of this patent
Estimating the term…
Abstract
A unitary moulding of plastics material comprising: A. a spool member for carrying thread windings, and B. a thread trapping member joined to said spool member by frangible bridging means, said thread trapping member being adapted, after breaking of the frangible bridging means, to be fitted to the end of said spool member so that a surface of the thread trapping member cooperates with a surface of the spool member to form a groove for trapping thread.
Claims14
A unitary moulding of plastics material comprising:
- a. a spool member for carrying thread windings, having a male portion at one end thereof, and
- b. a thread trapping member joined to said spool member by frangible bridging means and having a female portion the internal diameter of which is substantially equal to the external diameter of the male portion of the spool member, said male and female portions being adapted, after breaking of the fringible bridging means, to cooperate together so that a surface of the thread trapping member and a surface of the spool member together form a groove for trapping thread.
A spool for thread, said spool being of a one-piece construction and comprising a cylindrical thread receiving portion, end flanges at opposite ends of said cylindrical thread receiving portion, and thread trapping means joined to at least one of said end flanges and forming an axial extension of said cylindrical thread receiving portion;
- said thread trapping means including a thread end portion receiving part permanently formed with said end flange, a thread end portion trapping member, and a frangible connection between said thread end portion receiving part and said thread end portion trapping member positioning said thread end portion trapping member at an end of said thread end portion receiving part remote from said one end flange, said thread end portion trapping member being tubular and said thread end receiving part having an external size and configuration snugly receivable in said thread end portion trapping member.
A spool of thread comprising:
- a. a spool member having a male portion at one end thereof,
- b. thread wound on said spool member, and
- c. a thread trapping member joined to said spool member by frangible bridging means, and having a female portion the internal diameter of which is substantialy equal to the external diameter of the male portion of the spool member, said male and female portions being adapted, after breaking of the frangible bridging means, to cooperate together so that a surface of the thread trapping member and a surface of the spool member together form a groove for trapping thread.
Dependencies are inferred from the claim text.