De Laval timer converter with cam, one last question

Anonymous-0 · Apr 6, 2009

how long did De Laval make the timer converter with cam driven points, was this made into the 1970's or longer? Also I was told you could change the polsiation rate by changing the cam is this correct? Finaly was this control (timer converter) used for pipeline milkers?

rrlund · Apr 7, 2009

Yes to the last 2 questions. I'm trying to remember when that system was new. I'm gonna say into the early 70s,yes.

Jon Hagen · Apr 7, 2009

We had one of those on our pipeline milker system
It was already used when we installed it in 1972, so may have been used in the 60's.

The unit we had was an aprox 8X12 stainless steel box with front lid. Inside was a little electric gear reduction motor with a white plastic cam wheel on the output shaft. a black micro switch with a little metal wheel on the end of the micro switch arm ran on the cam wheel.

Being the gear motor ran at a constant speed, I don't see how you could vary the pulsation rate, it woild still switch once per rotation of the cam wheel.
You could vary the duration of the pulse by substituting a cam wheel with a longer or shorter cam lobe.

rrlund · Apr 7, 2009

I think that was what he wanted to know. You could go from 70-30 to 60-40,etc.

Catskill Pete · Apr 7, 2009

The pipeline I was using was installed about 1964. I believe they came out with solid state unit about 68, But there were a lot of the old ones in the warehouses and dealer shelves, so if some one told me that a system installed in the early 70"s had it I could believe it.
I "think" the pulsation to rest rate could be changed by using a different cam on the points. If memory is correct,[an iffy proposition at the best of times!]

Anonymous-0 · Apr 7, 2009

Did the solid state unit use a relay for controling the polsaiters?

Catskill Pete · Apr 8, 2009

I am not that clued up on the solid state units, I have seen them but never looked them over very closely. As I said I had converted to pnuematic pulsation by then. I might add that I had NO INTEREST in going back. Unfortunately along with the controller issues the magnetic stall cocks did not age well. Constant battles with keeping the contacts clean and magnet failures. I have always liked DeLaval equipment but their electric/magnetic pulsation equipment was lousy. I might add 90% of the dairy operators that I knew with Delaval pipelines had also converted to some other form of pulsation. Either pnuematic pulsators or a competitors electric pulsation system.
I am looking around to see if I still have any manuals for the controller. I know I still have some of the pipeline manuals but can"t remember if I hung on to that particular one, [by intention or just plain didn"t get around to tossing it out].

De Laval timer converter with cam, one last question

Anonymous-0

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rrlund

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Jon Hagen

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rrlund

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Catskill Pete

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Anonymous-0

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Catskill Pete

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