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Method and Apparatus for Transporting Closed Tape Loop

IP.com Disclosure Number: IPCOM000091421D
Original Publication Date: 1968-Jan-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 57K

Publishing Venue

IBM

Related People

Lowery, MJ: AUTHOR [+2]

Abstract

Endless magnetic tape loop 1 is pneumatically formed into a dog bone shape, or shape having bulged ends 2 and 3, and collapsed center portions 4 and 5 for transportation from storage bins 6a and 6b to processing chamber 7.

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Method and Apparatus for Transporting Closed Tape Loop

Endless magnetic tape loop 1 is pneumatically formed into a dog bone shape, or shape having bulged ends 2 and 3, and collapsed center portions 4 and 5 for transportation from storage bins 6a and 6b to processing chamber 7.

Transport 8 includes header 9 having discontinuous portions formed by edges 10 of the mouths of bins 6a and 6b. Bin 11 is provided for temporary storage of loop 1. Stop 12 of aerodynamically low-impedance material defines the normal position of belt 1 when it is not being used or processed. Control chamber 13 has vacuum valve 14 connected to vacuum line 15 and atmospheric air valve 16. The other end of header 9 adjacent chamber 7 includes vacuum valve 17 connected through vacuum line 18. Air vents 19 and 20 are positioned near the storage end of each bin 11 or 6 adjacent center portions 4 and 5 of loop
1.

When loop 1 is to be moved from storage position such as bin 11 to chamber 7, pressure P2 is switched to ambient by closing valve 14 and opening valve 16. Valve 17 is opened to reduce pressure P1 well below ambient pressure P2 causing loop 1 to move to the left. Ends 2 and 3 of loop 1 are held open due to the elastic properties of the belt material and there is no substantial change in pressure in these regions during movement of the loop. The pressure at portions 4 and 5 remains substantially ambient during transportation.

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