Browse Prior Art Database

Fast Acting At Pocket Selector for Document Sorters

IP.com Disclosure Number: IPCOM000093629D
Original Publication Date: 1967-Nov-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 26K

Publishing Venue

IBM

Related People

Blankenship, JD: AUTHOR [+2]

Abstract

This is a fast-acting at-pocket selector for document sorters. potential energy is internally stored in a cantilever beam to enable fast switching with a minimum of mechanical parts. The selector comprises a spring-mass system represented as a cantilever beam member 10 and electromagnets 11 and 12 opposite each other and in line with the tip of beam 10. In a neutral position, the tip of the beam is equidistant from the poles of electromagnets 11 and 12. If magnet 11 is energized, the tip of beam 10 moves toward electromagnet 11 and is held by such electromagnet until it is de-energized. This would cause documents to be deflected in a downward direction. At the moment that electromagnet 11 is de-energized, the tip of beam 10 undergoes a sinusoidal vibration.

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Fast Acting At Pocket Selector for Document Sorters

This is a fast-acting at-pocket selector for document sorters. potential energy is internally stored in a cantilever beam to enable fast switching with a minimum of mechanical parts. The selector comprises a spring-mass system represented as a cantilever beam member 10 and electromagnets 11 and 12 opposite each other and in line with the tip of beam 10. In a neutral position, the tip of the beam is equidistant from the poles of electromagnets 11 and 12. If magnet 11 is energized, the tip of beam 10 moves toward electromagnet 11 and is held by such electromagnet until it is de-energized. This would cause documents to be deflected in a downward direction. At the moment that electromagnet 11 is de-energized, the tip of beam 10 undergoes a sinusoidal vibration. After half of a natural period, the tip of the cantilever beam 10 is in contact with the pole piece of electromagnet 12.

If neither electromagnet 11 nor 12 is energized, the vibration of beam 10 gradually dies down due to damping. However, if electromagnet 12 is energized, substantially at the moment when electromagnet 11 is de-energized, beam 10 is captured by electromagnet 12 on its first swing and remains in contact with the pole piece of electromagnet 12. The energy to achieve the oscillatory motion is obtained almost entirely from the potential energy stored in beam 10. Electromagnet 12 only has to furnish sufficient energy to overcome the damping losses...