Browse Prior Art Database

Blade Scraping Tape Cleaner

IP.com Disclosure Number: IPCOM000092447D
Original Publication Date: 1966-Nov-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 45K

Publishing Venue

IBM

Related People

Hayunga, CP: AUTHOR

Abstract

This tape cleaner has opposed top and bottom scraper blades 11 and 13. Blade 11 is mounted in a fixed support 15. Blade 13 is carried by pivot arm 17 which is spring-biased to give a predetermined force urging blade 13 toward engaging tape 19. Particles scraped from tape 19 are removed by lateral pressurized air flows through top recess 21 and bottom recess 23.

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Blade Scraping Tape Cleaner

This tape cleaner has opposed top and bottom scraper blades 11 and 13. Blade 11 is mounted in a fixed support 15. Blade 13 is carried by pivot arm 17 which is spring-biased to give a predetermined force urging blade 13 toward engaging tape 19. Particles scraped from tape 19 are removed by lateral pressurized air flows through top recess 21 and bottom recess 23.

In a prior arrangement, the arm projected to the left and formed a single escape gap beneath the tape. With blade wear, the gap became restricted and the air pressure increased to interfere with the proper tensioning of the bottom blade of the spring-biased arm toward the tape.

A suitable fixed air pressure force against arm 17 is obtained by providing two fixed air escape gaps 25 and 27. Fixed member 29 is positioned forward of the end of arm 17 and beneath tape 19 to form gaps 25 and 27. Passage 31 decreases in cross-section with blade 13 wear but air pressure does not increase because of the fixed gaps 25 and 27. In order to remove residual particles, air cleaner 41 is provided compactly immediately after blades 11 and 13. Cleaner 41 includes a top groove 43 above tape 19 and a bottom groove 45. The lateral air flow through grooves 43 and 45 causes tape 19 to vibrate so that residual particles are detached and removed by the top and bottom air streams.

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