Browse Prior Art Database

Dynamic Timer

IP.com Disclosure Number: IPCOM000096220D
Original Publication Date: 1963-Feb-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 37K

Publishing Venue

IBM

Related People

Schoonover, DA: AUTHOR

Abstract

Disc 10 having radial slot 11 opening outwardly at the periphery is secured to rotating shaft 12 on the machine to be timed. Solar cell 15 and lamp 16 are mounted in spaced relationship in holder 17 which is fastened to carriage 18. Holder 17 and carriage 18 are positioned relative to the slotted disc 10 so that the latter exposes solar cell 15 to lamp 16 once per revolution of shaft 12. Carriage 18 can be rotated so that the cell 15 and lamp 16 move through 360 degrees around the periphery of disc 10. Disc 10 is positioned on shaft 12 so that at a pre-determined machine degree position slot 11 is exposing lamp 16. This is at a position where calibrated scale 20 on carriage 18 is indicating the same pre-determined machine degree.

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Dynamic Timer

Disc 10 having radial slot 11 opening outwardly at the periphery is secured to rotating shaft 12 on the machine to be timed. Solar cell 15 and lamp 16 are mounted in spaced relationship in holder 17 which is fastened to carriage 18. Holder 17 and carriage 18 are positioned relative to the slotted disc 10 so that the latter exposes solar cell 15 to lamp 16 once per revolution of shaft 12. Carriage 18 can be rotated so that the cell 15 and lamp 16 move through 360 degrees around the periphery of disc 10. Disc 10 is positioned on shaft 12 so that at a pre-determined machine degree position slot 11 is exposing lamp 16. This is at a position where calibrated scale 20 on carriage 18 is indicating the same pre-determined machine degree.

To time the machine, it is only necessary to compare the time of the cell 15 output with the time of the signal from the machine. This is done by logically Anding the cell 15 output with the machine signal. The output from And 25 is connected to indicating device 30.

Oscilloscope 40 is used to compare the timing of the cell 15 output with the signal from the machine. The output from the machine to be timed is connected to vertical input 41 of oscilloscope 40. The output from cell 15 is connected to the trigger input 42 of oscilloscope 40. With this arrangement, the signal from the machine is displayed by oscilloscope 40. Carriage 18 is then moved until the point at which the oscilloscope triggers coincides with the signal f...