Thread Number: 56105
The Story of How the Mobile Maid Came to Be
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Post# 784560   9/19/2014 at 07:16 (3,504 days old) by Unimatic1140 (Minneapolis)        

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This morning's blog post is going to make a few people quite happy I think :-)

Designing a Better Portable Dishwasher






Post# 784564 , Reply# 1   9/19/2014 at 07:47 (3,504 days old) by Tomturbomatic (Beltsville, MD)        
Great article. Thanks.

I have to take issue with the following statement:

"We cut through the plastisol film with a sharp knife to expose bare steel in “X” marks on the bottom of the tub. These cuts have not rusted nor has the adhesion of the plastisol been impaired in this or other areas "

Our last impeller Mobile Maid with the blue tub interior and the white racks only had two after rinses and there was some effect on the washing performance of heavily soiled loads.


Post# 784569 , Reply# 2   9/19/2014 at 08:01 (3,504 days old) by turquoisedude (.)        

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I'm happy... laughing

 

Thanks for posting this Robert!!

 

I'd love to get a look at the 1953 version of the 'Maid...  


Post# 784573 , Reply# 3   9/19/2014 at 09:08 (3,504 days old) by cuffs054 (MONTICELLO, GA)        

check out control panal on oven. Never saw one like that.

Post# 784576 , Reply# 4   9/19/2014 at 09:34 (3,504 days old) by ultramatic (New York City)        
Well, I feel like that redhead...

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Sure perked up my day! Thanks Robert!


Post# 784577 , Reply# 5   9/19/2014 at 09:34 (3,504 days old) by Tomturbomatic (Beltsville, MD)        

The 1953 version of the portable dishwasher is the one pictured next to the clock with the big round dial on the front. The trim colors on these mchines were, at various periods, turquoise or red.

The oven's control panel shows the meat thermometer available on the TOL model. Otherwise, it is just GE's first style of builtin oven.


Post# 784579 , Reply# 6   9/19/2014 at 10:07 (3,504 days old) by ovrphil (N.Atlanta / Georgia )        
productstat.com

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Robert. That link has enough distraction for days of reading - many good articles, as this one. One article about the GM Tech Center caught my attention. As it's fairly close to my hometown, I remember when it was new and the parking lots that covered so many acres, were full(unlike today).

Thanks for mentioning this ...have a good one!


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Post# 784606 , Reply# 7   9/19/2014 at 15:16 (3,504 days old) by turquoisedude (.)        

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Tom, I guess the 1953 design was retained for several years - my 1956 'Maid does look like the one in the photo but has the red timer dial.  IIRC, it was the early ones that had the green dial.   

 

I just HAVE to get my butt in gear to complete the restoration of that 56 model...  


Post# 784612 , Reply# 8   9/19/2014 at 16:15 (3,504 days old) by Launderess (Quiet Please, There´s a Lady on Stage)        

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Well won't be wearing starched petticoats, a shirtwaist and high heels when loading our Mobile Maid but am thankful none the less for the information! *LOL*

Post# 784616 , Reply# 9   9/19/2014 at 16:34 (3,504 days old) by Frigilux (The Minnesota Prairie)        

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The woman in the ad is casual elegance personified...from the shoulders down. The slightly deranged look on her face infers she wants to slam the lid on that girl's fingers, LOL.



Post# 784630 , Reply# 10   9/19/2014 at 17:20 (3,504 days old) by Launderess (Quiet Please, There´s a Lady on Stage)        
By the way, did you know we have rats in the cellar?

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*LOL*

Knew someone years ago who grew up on the same street as the house and yes it is still there!

www.iamnotastalker.com/2011/10/25...

www.zillow.com/homedetails/172-S-...


Post# 784678 , Reply# 11   9/20/2014 at 03:20 (3,503 days old) by whirlcool (Just North Of Houston, Texas)        

Why do I still keep seeing Joan Crawford's face on the woman standing by the dishwasher? That little girl resembles my nutty sister when she was about that age.

My parents had a Mobile Maid for a couple of years (61-63 or so) but got rid of it.
It took up too much room in the small kitchen the house originally had. If I remember correctly the interior of the MM was turquoise. And I still remember the Plastisol odor to this day. I thought all dishwashers were supposed to smell like that when they just finished the dishes! I never knew that plastisol was used on the racks too.


Post# 784701 , Reply# 12   9/20/2014 at 06:35 (3,503 days old) by jetcone (Schenectady-Home of Calrods,Monitor Tops,Toroid Transformers)        
The "Mother's" expression belies the fact that

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she knows Russia has launched and in minutes her kitchen is gonna go Bluewy to pieces !!


Post# 784714 , Reply# 13   9/20/2014 at 08:24 (3,503 days old) by combo52 (50 Year Repair Tech Beltsville,Md)        
Early Mobile Maid DWs

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Great article Robert, Thanks

One of the most important recurring things mentioned in the development of this product was keeping the cost of building these DWs down. During a recent discussion about GE GSD1200 and GSD2800 DWs from the 1980s one member decried that taking the reversible front panels out of DWs as a cost cut like that was a bad thing. Without cost cuts and production improvements few of us would be able to have modern appliances at all, can you imagine how much a Kitchen-aid KDS16 would cost today if improvements and cost cutting had not occurred, maybe $3000 or more, very few people would have DWs at all.

In the US around 80% of homes and apartments have a DW, this is almost double the rate of homes that have DWs in much of Europe where the cost of DWs is much higher on average partly because they are overly complicated and expensive to build.


Post# 784717 , Reply# 14   9/20/2014 at 08:53 (3,503 days old) by turquoisedude (.)        

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Interesting observation about the cost of building a dishwasher, John.   I would liken that to the 'replacement cost' of rebuilding a house after a major fire or other damage - to rebuild it to the same standards using current materials and at current prices can be very expensive!

 

Also interesting was the article mentions that GE was very aware of the cost to the consumer, not just of the dishwasher but also for installation.   I know I've droned on about this before, but in the neighbourhood where I grew up, most folks had portable dishwashers because of the oddball plumbing arrangements in the kitchens.  The homes were more or less all built by the same builder and they all had a long drain pipe running from the main drain stack through the base cabinets to the sink.  You may have had the 24 inch space for a dishwasher, but not the depth...   One of the few built-in units was in the house of a friend of mine and whoever installed it did a really nice bojack job of it; they hardly used the dishwasher as a result.   Fortunately I saved it when the house was sold a few years ago!  


Post# 784767 , Reply# 15   9/20/2014 at 17:43 (3,502 days old) by danemodsandy (The Bramford, Apt. 7-E)        
Reading Between the Lines....

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All those protests about the supposed durability of the Plastisol liner feel to me like ad-speak - an attempt to gloss over a situation that GE must have already known was brewing.

I personally cannot imagine that deliberately cut Plastisol did not generate rust. Oh, maybe not in the first two nanoseconds, but it would not have taken long after that. I speak from long and bitter experience.

Remember, it wasn't too long after this that GE was making a service part for the pull-out undercounter models - a stainless replacement floor to stop the Plastirot affecting so many of those units.


Post# 784771 , Reply# 16   9/20/2014 at 18:34 (3,502 days old) by Launderess (Quiet Please, There´s a Lady on Stage)        
Plastisol

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Am here to tell you it is like playing a game of "Whack a Mole" with the inner tub of GE Mobile Maid dishwashers.

Having patched the Plastisol interior of damage the unit arrived with one is constantly inspecting for other spots trouble and taking proactive action.

Think one of the major problems of at least top loading MM dishwashers is the damage to tub liner from dropped utensils such as knives or forks. Since one loads things downwards it probably was only a matter of time before someone drops something that resulted in nicking that plastic liner.

Mind you enameled porcelain on steel tubs on both dishwasher and washing machine tubs can suffer the same fate. However much depended IMHO upon the quality of the porcelain interior and of course the user. The fact so many vintage dishwashers and washing machines with such tubs are still out there with interiors in pretty decent shape I think proves my point.

In linked article GE goes into much detail about bacteria counts and so forth on porcelain versus Plastisol. Well that very well might have been true but just because germs were on/in the tub interior it does not follow they would transfer onto dishes. Between several water changes at temps >140F, highly alkaline detergent and then a heated drying don't think we need worry about how sanitary dishes were coming out of either machine. That plus detergents at the time contained healthy dosages of chlorine bleach. Need I say more?

All marketing is putting a spin on things to push goods or services. GE had to know fully well the drawbacks of using Plastisol for dishwasher tub linings, but chose to cheap out instead of going with porcelain. The fact ever GE/Hotpoint dishwasher repair manual from the "Plastisol" era gives instructions on how to repair tub linings tells you something was up. IIRC GE also sold replacement parts for the metal under tub.


Post# 784780 , Reply# 17   9/20/2014 at 19:24 (3,502 days old) by bajaespuma (Connecticut)        
Yes, this posting made me very happy indeed

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I, personally, don't attribute the calculated greed to companies like GE in the 1950's that I've come to expect from GE in the last 30 years. IMHO, GE decided to experiment with a relatively new Firestone plastic compound that they thought might create a better liner(less chipping, noise muffling) for dishwasher tubs than the porcelain of the period which, I'm told, had serious limitations on application at that time. I would guess that at the time it wasn't much cheaper to use than porcelain. It didn't work as well as they had hoped, but it wasn't so disastrous that they had to make an immediate change. I think the accessory stainless bottom liners were needed more for the early machines that had 750-watt heaters that I've seen that broiled not only the tub bottoms but whole sections of the bottom racks.

 

My family owned a couple of these machines, one for 13 years(the one I yap about incessantly in these forums) and it didn't have a blemish anywhere and lots of different people, some careful, some not, used that machine. By 1960, GE put a fine chicken-wire cage over the bottom of the tub so most fallen silverware and stuff wouldn't go all the way through. I collect these machines and 4 out of 5 of them have pristine tubs; one has a "mole" to use Laundress' term. I think we all agree that there is no better material for dishwasher tanks than high-quality stainless steel, but, as a collector, I find the different styles and colors of liner Plastisol to be low-voltage delightful. Unlike some, I like the smell; it reminds me of the wonderful Plastic Goop that we used with our Mattel "Creepy Crawlers" and "Vac-U-Form"toys. Would I buy a dishwasher today with an applied plastic lining? No. Would I buy our SU-70 v.2 again if it were available today? In a heartbeat.

 

 


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Post# 784848 , Reply# 18   9/21/2014 at 06:51 (3,502 days old) by jetcone (Schenectady-Home of Calrods,Monitor Tops,Toroid Transformers)        
Here

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here, Launderess

 


Post# 784856 , Reply# 19   9/21/2014 at 07:28 (3,502 days old) by akronman (Akron/Cleveland Ohio)        
screen below bottom rack

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My 66 Mobile Maid is running well, I seem to have currently fixed the Plastisol rust spots well, but yes I get one or two pieces of silverware sticking thru the rack, etc, either stopping the spray arm or scraping the bottom liner. Would a stainless wire screen at maybe 1/4inch square holes, tied under the entire bottom rack, help me? Or hurt me by impeding the water spray? No one loads that machine but me, but I ain't perfect. Or maybe I should just screen the silverware basket?

Post# 784861 , Reply# 20   9/21/2014 at 08:25 (3,502 days old) by combo52 (50 Year Repair Tech Beltsville,Md)        
Protecting the bottom of MM DWs

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Hi Mark, it would probably be better to just screen the SW basket, 1/4" wire mesh across the entire impeller area would likely impede the washing performance quite a bit.

Post# 784879 , Reply# 21   9/21/2014 at 10:04 (3,502 days old) by rapunzel (Sydney)        

Quote "The slightly deranged look on her face infers she wants to slam the lid on that girl's fingers, LOL."

I was thinking exactly that very same thought looking at that picture. Not only was she going to slam the lid down once, but many, many times. The girl looks a little disturbed also, as if she knows what's coming her way. Otherwise it's a perfect picture.



Post# 784889 , Reply# 22   9/21/2014 at 11:20 (3,502 days old) by bwoods ()        
slverware, colors and smells

Thanks for posting this, Robert and allowing us a walk down General Electric's memory lane!

 

When I was very little, I remember one of our neighbors had a house with a built-in dishwasher. It was a builder-installed model,so it was probably 1953 - 1955 model as that was when most of the houses were built. She was the only person in the entire neighborhood with a dishwasher.

The lady that lived there was over at our house one day and was talking to my mom and told my mom she had a dishwasher. Mom asked her how she liked it. (Of course, I was all ears listening to them talk about an appliance,even at age five.) She said she did but occasionally things would fall or accidentally be dropped in the bottom and jam the unit.

I don't the main issues would be things falling through the silverware basket, as obviously the bakets are designed not to do this, unless a hole is broken in the bottom. But careless loading can cause things to fall through the racks. Even today I will occasionially get a spoon or knife in the bottom of the tub where I just threw a handful of silverware in. I also have laid knives on the rack or utensils and have had them fall through.

So GE had a good idea to protects the impeller from potentially jamming or flinging something around and damaging the tub or dishes (or the impeller itself). The mesh is so thin and well spaced that it seems it would, realistically, offer little mass to impede water flow. If it seriously affected washability, then of course General Electric would not have put it there. If you placed it beneath the silverwarae/flatware basket only, if there was an impedence problem then your silverware would not be cleaned properly.

As far as cost cutting methods. Yes, I am the one who said stamped unitized DW front panele were done for that reason. John was intimating it was because of consumer compaints. So am am glad he I agree that indeed it was done by the bean counters as a cost cutting measure.

There many ways to cut down production expenses. Obviously, cut down on quality and/or features is one. There are other means as well such as investing in research to develop replacement materials or utilizing process that are equal or better than the original. Cutting down on labor cost through the use of robotics or through time-efficiency studies can also make profitability increase, without decreasisng quality or consumer features. Profitability may or may not be at the consumer's expense depending on a company's approach.

Of course things are different today than they were in the late fifties when the Mobile Maid was in production. Today you either assemble the units in the U.S.A. from parts that come from China or you just have the whole thing whole thing built in China and ship it over, ha.

Yes, that Plastisol discussion brings back wonderful memories of the distinctive smell our 1973 Potscrubber, with the celery green interior, had. Even our previous '68 Modern Maid, with the porcelain "Robin's Egg Blue" interior had a nice wonderful smell, pressumably due to the rack coatings. I guess that is the "new car" smell equivalent for dishwashers. :)

Yes it was the good old days when cars and even dishwashers were color coded. From the steering wheel to the carpet it was color coodinated. Dishwasher were beautiful inside as well as out with their color coordinated racks, tub and silverware basets. Whether it be bad or good, asthetics played a big role is consumer marketing.

Yes. Bring back those days when you could drive home from work in a color coordinated car, load your dishes into a color coordinated dishwasher. Have color coordinated Kleenex grace your cabinet top. And of course, the ultimate. You and your company could wipe with delightfully color coordinated bath tissue that matched your toilet, tub and sink!

 

Ah, those were the days.  :)


Post# 784914 , Reply# 23   9/21/2014 at 13:23 (3,502 days old) by appnut (TX)        

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I'd just remove the silverware basket every time you wanted to add silver.  Not thee first time I've seen that occur when dealing with a vintage top loading dishwasher.  Better yet, keep the silverware basket on the counter or in a sink bowl until you run it. 


Post# 785048 , Reply# 24   9/22/2014 at 01:46 (3,501 days old) by Launderess (Quiet Please, There´s a Lady on Stage)        
Don't Get Me Wrong

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Love my MM dishwasher and am constantly amazed what it can do in <50 minutes as opposed to my previous Kenmore that took over one and a half hours.

Shame these top loading dishwashers weren't around longer and or shall never likely be introduced. For small/cramped kitchens IMHO they are streets ahead of even 18" units because one does not need room in front to open door.



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