Browse Prior Art Database

Slide Projector

IP.com Disclosure Number: IPCOM000092832D
Original Publication Date: 1967-Mar-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 31K

Publishing Venue

IBM

Related People

Sworakowski, MT: AUTHOR [+2]

Abstract

This slide projection system automatically selects desired slides from a batch. Each slide 1 is coded by notches 2 along one side. Slides 1 are loaded into tray 3. As a slide 1 is fed into projector 4, notches 2 are sensed by switches 5. Each notch position has an associated plunger-actuated switch. The plungers are spring-loaded inwardly so that the occurrence of a notch allows the plunger to move inward and actuate the associated switch. The output of switches 5 goes to program unit 6. The latter allows slides with particular code notches to be either selected for showing or rejected without showing by projector 4. After showing or rejection the slides are stored in tray 7.

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Slide Projector

This slide projection system automatically selects desired slides from a batch. Each slide 1 is coded by notches 2 along one side. Slides 1 are loaded into tray 3. As a slide 1 is fed into projector 4, notches 2 are sensed by switches
5. Each notch position has an associated plunger-actuated switch. The plungers are spring-loaded inwardly so that the occurrence of a notch allows the plunger to move inward and actuate the associated switch. The output of switches 5 goes to program unit 6. The latter allows slides with particular code notches to be either selected for showing or rejected without showing by projector 4. After showing or rejection the slides are stored in tray 7.

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