Winter Project
This is my old Mallory model 12RS6D power supply. It is one of the handiest things I have at my work bench. It provides either 6 volts at 10 amp or 12 volts at 6 amp. Up to 20 Amp intermittently. What makes it even better is the voltage is variable. Adjustable from nothing to about 15 volts. Very handy when playing with things.
It is very old. I bought it in the 1980’s, at the auction sale of the contents of an old radio repair shop. This was at the the small neighbouring town of Olivia. I have been unable to come up with a date for manufacture, but I would guess the 1940’s at the latest. If some one could supply me with more information on this unit, I would be appreciative.
The only complaint I have about the unit is, it is easy to forget the power on. With no light on it, you have to notice which way the toggle switch is sitting. Last week with the snow blowing outside and the wind chill below zero, (that’s about minus 18 degrees Celsius), I decided this would be a good project.


Turning the unit over, the job looked simple.
Digging in my junk (supplies) I came up with a red LED and snap in mounting ring.
I like the simplicity of the design, no bottom cover to get in the way. I can relate to the feeling, if your stupid enough to stick your fingers into the wires, that’s Darwin in action. Note the heat sinks for the rectifiers is the steel case. I like the louvers on the top of the case, had to be designed by a Street Rodder. Common sense, open bottom, louvres on top—no need for a fan.

Digging through my stuff I came up with some goodies.
In the days before computers and calculators we used things like this paper slide rule.This one was given away by the Omite Co. of Chicago.
I know that a LED has to have a resistor of the right size in series to keep from burning out. I did my calculations, but being it has been a while since doing anything like this. I did the reasonable thing and got on the Internet. Soon I had all the numbers, that left me feeling good as my calculations were right on. This old man isn’t dead yet.
Luck was with me again as I found a new resister of the right value in my stash of spare parts. See just because something hasn’t been used for 20, 30 or more years doesn’t mean you should discard it.

I wanted to be sure all would work right so I set up a quick test to check it out. All worked as planned, easier to find out you looked at something wrong at this point then after it is all assembled. This is where the various colored jumpers with alligator clips come in very handy.
Sorry about all stuff in the background, I never seem to be able to clear my bench completely.
A gentleman with a better education than me, said as he smiled, that a man’s workbench reflects his mind. I pointed out that being his workbench was seldom used and almost empty, it told a lot about his mind too.
Here we are drilling the hole for the LED. Notice how heavy the steel in the case is, no skimping here. When this power supply was built, a battery powered electric drill was unbelievable. Electric drills were bulky, heavy, expensive and only starting to become common.
Below you can see the LED from inside the case. The connections were simple solder jobs. The other picture shows the finished job. It doesn’t look much different but the red glowing LED will sure help remind me to shut the switch off.




We took a boat ride on a paddle wheel boat in the bay as the gulf was too rough. I and Donna enjoyed walking in the historic district, touring old houses and checking out the antique shops. Than as the weather cooled we headed down to South Padre Island. We had a few day of beautiful weather and enjoyed walking the beach. Our room had a balcony over looking the gulf and the sun rises were beautiful. Then the temp dropped to 28 degrees one night and the rain turned to sleet. the only bridge to the island was closed, The help couldn’t get to work in the hotel. They had 15 minuet rolling black out at random intervals, so people would get stuck in the hotel elevators at times. We had about a quarter to one half inch of ice on things, I don’t think it would have been noticed in MN. Brownsville shut everything down for two days.

Yes we still walked the beach when it turned cold and the wind was gusting to 28 MPH. I was amazed the sand drifted like snow and I liked the sound of the gulf. This is a picture we took on the beach the morning after the Ice storm.







This old photo shows the barn and silo and the last of Dad’s work horses. This probably dates from early 1940’s. Sadly not many photos were taken of farm operations and fewer survived.
Here we are getting ready.

When it went, it went fast and it fell in a different direction than I would have guessed. I’m glad I was clear.
I was poking around in the old garage and found this container of old grease. I think it is quite old because of the label “hard oil” instead of the word grease being used. I tried searching for the Kunz oil co. of Mpls. without much luck. Maybe I’ll find something with a little more time invested. If any one has any information on the age of this can I would appreciate hearing from you.
This is me on my loader tractor. I would have a hard time getting along without it. It is an antique, believe it or not. Manufactured in 1959, the year I graduated from high school. I purchased it for $1100 on an auction sale in the 1970’s when I bought dad’s farm. That same year my wife went to an auction in the neighborhood that had listed a heavy duty loader. With advice from a cousin, my wife joined the bidding. Now we we were newly back in the area and only the relatives and a few neighbors new Donna. When she called out her bid everyone turned and looked to see who this attractive young lady was. A woman bidding on a tractor loader was in itself unusual. The sale of the item was forgotten as they asked each other who was this stranger. You could here the whispers, “oh dat must be George Anderson’s Daughter-in-law, ya sure, she next to Pete Peterson an dat would be her cousin den”. The Auctioneer knew it was over, called sold for $220 to the young Lady. The men turned there attention back to the sale, with more than one regretting they had been distracted. I rebuilt the mount to fit the 340 and the result is a loader much stronger than the tractor.
Time takes it toll on everything, no big deal just buy some new parts, simple. You Bet, not on a 1959 tractor. No longer available, a problem Hot Roders and car restorers run into all the time. Making the pipe was the easy part. Rule’s tire in Willmar was able to bent me a copy.The result is below, I had to tweak the pipe a bit by heating it with my old acetylene torch. Yaa, I know The power bender does a nicer job. Normally you have the unit your working on, next to the bender so its easy to do. I’m ten miles from town and I didn’t want to run back and forth or haul the tractor.
The problem came with the muffler. No one had one on hand that would fit. ordering was a possibility.Searching the parts books for dimensions and pipe size is a pain in the butt. Plus that all takes time. I wanted to use the tractor, so the thought of a straight pipe entered my mind. Not a good idea, I knew my hearing was already bad enough.

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The finished product 