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Browse Prior Art Database

Article Handling

IP.com Disclosure Number: IPCOM000078720D
Original Publication Date: 1973-Feb-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 2 page(s) / 31K

Publishing Venue

IBM

Related People

Cummings, JC: AUTHOR [+3]

Abstract

In automatic warehousing operations, when a stored article is to be retrieved, the fetching apparatus may be inadvertently addressed to an empty storage compartment. It is desirable, therefore, to detect whether or not a stored article is being actually fetched, whether it is being stored, and other conditions relating to article handling on a conveying apparatus, such as a traveling elevator.

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Article Handling

In automatic warehousing operations, when a stored article is to be retrieved, the fetching apparatus may be inadvertently addressed to an empty storage compartment. It is desirable, therefore, to detect whether or not a stored article is being actually fetched, whether it is being stored, and other conditions relating to article handling on a conveying apparatus, such as a traveling elevator.

Each conveying apparatus supports a carriage travel bed movably supporting a reciprocating carriage, capable of fetching and storing articles to and from storage compartments. The actual article-engaging apparatus is not shown for simplifying the drawing.

Three sensors, consisting of phototransistors and light sources on opposite sides of the stored article path on the reciprocating carriage, provide numerous bits of status information concerning article handling. The forwardmost sensing pair monitors the gap between the storage compartments and the reciprocating carriage. The forward and backward sensors are disposed on the carriage travel path, such that both light paths are interrupted only when the article is being held in the reciprocating carriage. Accordingly, while conveying apparatus is traveling with an article, both the forward and backward sensors indicate an interrupted light source while the gap sensor indicates a completed light source.

An empty storage compartment is detected by the same three sensors when the reciprocating carriage reaches...