If you are looking for information about Morley guitar pedals, maybe this will help you. Morley is a guitar effects pedal company. They use electro optical circuitry to control the effect. It is used throughout their classic pedal line.
The company started in the 1960s by two brothers. Their names are Marvin and Raymond Lubow. Raymond created an electro mechanical echo unit. This unit made it so those using it could re-create echo effects in their performances without using tape devices and echo chambers. The brothers went into business as Tel-Ray Electronics. After a while the brothers began marketing their own line of products under the Morley name.
In the 1970s the company grew their line to include not only pedals but other devices such as distortion units, phasers, and flangers. They produced many pedals that were multi functional such as the chorus flanger and phaser volume. The pedals became known for its high quality design and rugged construction.
In the 1980s the company reduced the treadle and housing size of their pedals and changed the chassis to black. They also made some small non treadle effects for a time. In 1989, the company was sold to a Chicago firm. The company of today still uses the electro optical circuitry and the basic pedal layout that was done by the Lubow brothers. The pedals though now use a 9V battery with a AC adapter capability instead of being AC powered.
So as you can see, these pedals have evolved over the years.