Browse Prior Art Database

Punch Interposer Positioning Device

IP.com Disclosure Number: IPCOM000098890D
Original Publication Date: 1958-Oct-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 2 page(s) / 46K

Publishing Venue

IBM

Related People

Brearley, FW: AUTHOR

Abstract

In the selective positioning of punch interposers, particularly where minimum spacing of punch columns is a requirement, a clock type coil spring is used. This permits the electromechanical selection of punch interposers and effects their restoration to a normal position after a punching operation.

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 91% of the total text.

Page 1 of 2

Punch Interposer Positioning Device

In the selective positioning of punch interposers, particularly where minimum spacing of punch columns is a requirement, a clock type coil spring is used. This permits the electromechanical selection of punch interposers and effects their restoration to a normal position after a punching operation.

An interposer 1 is fixed to the end of a spring 2, which is normally contained within a housing 3. A plurality of these housings, one for each column of punches, is mounted about a shaft 11 which is in turn secured to a carrier 4. The carrier 4 is fixed to a toothed belt 6. The toothed belt is reciprocally moved by a shaft 7, pinion 8, gear sector 9 and cam 10. A distributor cam 15, attached to the cam drive shaft 12, is used to provide timed impulses to the selector magnets 13. A selector magnet, when energized, pulls its associated stop pawl 14 into engagement with a projection fixed to the end portion of the spring 2. In this manner, an interposer is positioned over a punch corresponding to the timed pulse, which serves to energize the appropriate selector magnet. For example, if a 6 punch is desired, the selector magnet receives a pulse a 6 time from the distributor and the pawl engages with the projection corresponding to that position of the interposer. When a punch interposer selection occurs, the spring unwinds from its housing as the carrier continues to its extreme position. On the return stroke of the carrier, the spring r...