Typewriting machines – Including interposed inking device for record-medium – Ribbon spool or mount therefor
Patent
1985-12-19
1987-08-04
Burr, Edgar S.
Typewriting machines
Including interposed inking device for record-medium
Ribbon spool or mount therefor
4002401, 242 718, B65H 7500, B65H 7518
Patent
active
046842721
ABSTRACT:
A spool for a reversible-type correction tape assembly, in which an improved fastening means is provided between the cap and the spool shaft. The spool shaft is designed to hold a ribbon-winding core so that the winding core is slideable in an axial direction of the spool shaft but is not rotatable relative to the shaft. The cap is detachably mounted on the top portion of the spool shaft so that the winding core does not slip off of the spool shaft. The spool shaft is provided with a male thread on a peripheral portion which is an extension above the winding core when the latter is engaged on the spool shaft. The cap is provided with a cylindrical bore having a seat portion and an inner peripheral surface provided with a female thread capable of engaging the male thread of the shaft, and the spool shaft has a transverse projection on the head surface thereof designed to press into the seat portion of the cap when the cap is screwed onto the shaft extension, to provide an improved fastening means, the material of the seat portion being softer than the material of the projection. The cap can be easily detached and can be securely fastened against loosening during use.
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IBM Tech. Disc. Bulletin, "Quick Mount and Remove Tape Reel Latch", Froelich, vol. 6, No. 4, Sep. 1983, pp. 83-84.
IBM Tech. Disc. Bulletin, "Self-Locking Support for Ribbon Spool", Matthaei, vol. 20, No. 8, Jan. 1978, pp. 3177-3178.
Burr Edgar S.
Fuji Kagakushi Kogyo Co., Ltd.
McDaniel James P.
Tully Thomas L.
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