Browse Prior Art Database

Quick Mount and Remove Tape Reel Latch

IP.com Disclosure Number: IPCOM000096678D
Original Publication Date: 1963-Sep-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 3 page(s) / 52K

Publishing Venue

IBM

Related People

Froehlich, FB: AUTHOR

Abstract

This expanding arbor device latches a tape reel onto a drive shaft. The device is for quickly attaching and detaching a magnetic tape reel in a tape sensing device. The upper right drawing shows the four main parts by which tape reel 11 is rapidly secured on drive shaft 14 by expanding arbor 12 operated by wide cam lever 13.

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Quick Mount and Remove Tape Reel Latch

This expanding arbor device latches a tape reel onto a drive shaft. The device is for quickly attaching and detaching a magnetic tape reel in a tape sensing device. The upper right drawing shows the four main parts by which tape reel 11 is rapidly secured on drive shaft 14 by expanding arbor 12 operated by wide cam lever 13.

The interior construction of the arbor is shown in the lower drawing. Shaft 14 has fastened on it circular shouldered drum 15 with central hub 16 having tapped central opening 17. Assembled over drum 15 and against the drum flange is inner hoop or split ring 18 which has tapered outer edge 19. This cooperates with related opposed taper 20 formed on one inner edge of outwardly expanding split mandrel 21. Mandrel 21 is formed also with a second inner tapered face 22 cooperating with taper edge 23 on shiftable cover ring 24. Rings 18 and 24 operate as compressive wedges which, when forced together, expand mandrel 21 within a tape reel hub to latch it on. Safety ring 10 is a continuous metal band which fits loosely in a circumferential notch in mandrel 21 without interfering with its expansion and contraction. However, ring 10 does prevent mandrel 21 from overexpanding and fracturing should arbor 12 be operated without the confining presence of tape reel 11.

Shiftable cover 24 is formed with central opening 26 and shoulder 25 for receiving hardened washer 28 against which are pressed a series of spring cup washers 29 and outer cam ring 30. Assembly screw 31 passes through all washers and rings and is threaded securely in tapped hole 17 in hub 16 of the drum on the drive shaft. Screw 31 is formed with cylindrical shank 32 over which slide ring 30 and washers 29. Also formed on screw 31 is a flat pivot extension 33 to whi...