Browse Prior Art Database

Rotatable Drive Coupling for a Takeup Spool

IP.com Disclosure Number: IPCOM000089313D
Original Publication Date: 1977-Oct-01
Included in the Prior Art Database: 2005-Mar-04
Document File: 2 page(s) / 61K

Publishing Venue

IBM

Related People

Kirksey, JR: AUTHOR

Abstract

Where limited space considerations do not permit axial motion loading and unloading for a takeup spool in a drive mechanism, parallel loading to a drive coupling of a removable takeup spool is desired. Fig. 1 illustrates a horizontal cross section of a parallel loading coupling in which a rotatable drive plate 1 operating through jaws 4 drives an externally toothed segment 3 on driven plate or hub 2 to drive the takeup shaft for the spool or other winding apparatus 5. Fig. 2 illustrates a view taken along the axial direction BB in Fig. 1. In Fig. 2 the rotatable driven hub 2 and the externally toothed gear segment 3, integral with hub 2, are shown. The provisions of gear teeth on element 3 provides a means for good frictional engagement with internal segmented gear elements 4.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 58% of the total text.

Page 1 of 2

Rotatable Drive Coupling for a Takeup Spool

Where limited space considerations do not permit axial motion loading and unloading for a takeup spool in a drive mechanism, parallel loading to a drive coupling of a removable takeup spool is desired. Fig. 1 illustrates a horizontal cross section of a parallel loading coupling in which a rotatable drive plate 1 operating through jaws 4 drives an externally toothed segment 3 on driven plate or hub 2 to drive the takeup shaft for the spool or other winding apparatus 5. Fig. 2 illustrates a view taken along the axial direction BB in Fig. 1. In Fig. 2 the rotatable driven hub 2 and the externally toothed gear segment 3, integral with hub 2, are shown. The provisions of gear teeth on element 3 provides a means for good frictional engagement with internal segmented gear elements 4.

Fig. 3 illustrates a view along direction AA of the driving plate member 1 together with the pivoted gear segment drive jaws 4. The gear segment jaws 4 are pivoted on shoulder screw means 6 to open and close the area of engagement with the external gear drive member 3 on hub 2, which is shown in phantom lines in Fig. 3. The pivotable jaws 4 are held in position by a pivoting detent spring 7, pivoted on pivot 8 as shown. Detent spring 7 is generally bow- shaped, as shown in Fig. 4, so that the ends of spring 7 frictionally bear against the surface of drive plate 1. When the jaws 4 are pivoted, spring 7 pivots about its pivot 8 to allow the jaws to...