| 摘要 |
A universal typewriter ribbon spool comprises a base member including a first flange member, and a centrally disposed annular hub having an inner wall and an outer wall, the inner wall defining an opening extending end-to-end therethrough; four splines equidistantly secured about the outer wall; four posts equidistantly secured about the inner wall and each having a longitudinal aperture therein; an annular ribbon holder having an inner wall defining an opening extending end-to-end therethrough and positioned about the hub; four splines equidistantly secured about the inner wall of the ribbon holder and which engage with the splines on the hub to prevent rotation of the ribbon holder about the hub; a resilient spool adapter positioned within the hub and formed of opposing arcuate gripping members which grip opposing posts of the hub, and a resilient center section having a central aperture, the center section connecting the gripping members together and being spaced from the remaining two posts when positioned within the hub; a second flange member; and four pins secured to the second flange member and which are inserted with a friction fit within the apertures of the posts to fixedly connect the second flange member to the base member such that the first and second flange members are disposed in generally spaced, parallel relation in assembled position on the spool.
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