Ejector Bucket Design

[Renze]

I just remembered something:

At a trade fair last year, a manufacturer showed a plastic bed liner sheet. They showed a video of off-highway dumptrucks that used it against frost sticking of dirt to the dump bowl, in open pit mining in russia.
That might be cheapest and easiest.. ??

 

[1957MM445OttawaBackhoe]

My 1957 Industrial Minneapolis Moline 445 tractor has a Ottawa Backhoe that was designed and patented with an ejector plate built into the bucket. It is a really good design. If you go to the US Patent Office website, just do a quick search for patent number 2,764,306. It is a really unique design. The plate never gets in the way whatsoever. It only actuates when you fully extend the bucket. This is a very rare backhoe. Even though it is 50 years old, it is conceptually way ahead of its time. Now if I could only find a operator and service manual for it.

 

[RedDirt]

Well that's neat. I've never been to the patent office web. Unfortunately neither firefox or explorer gave me full results and I treid on two computers with different results on each.

Here is a jpeg of drawing one, the only one I could get from a possible eight. The specifications page was also cut short with the all important explanation of the ejector function.

View attachment patent drawing-crop.bmp

If anyone else has better results from the patent search could you please post more info on this design. Figure three, the side cut-away view of the ejector would be helpful as well as the items #50+ in the specs covering the ejector principle and operation

 

[1957MM445OttawaBackhoe]

RedDirt,

I had to download their TIFF file program so that I could see anything at all when I first went into the site. After I downloaded their TIFF file program, I was able to see all of the patent information and pics. I initially could not figure out how to see all of the pictures, but I eventually figured it out. What you have to do is click on the arrows on the left side of the screen. That will scroll you through all of the pics. I can take some pictures of my backhoe this weekend and post them up here for you to see. I am new to this site, so I will have to figure out how to put the pictures up here. The side shots at the patent office of the bucket cam design are like rough drafts of the concept. The cam design on the actual backhoe bucket is different. So I will try to get you some shots of the real backhoe for you.

 

[1957MM445OttawaBackhoe]

RedDirt,

Now that I think about it, I will take some video of the backhoe in action. I will put it on YouTube. When I have it on YouTube, I will post the link here. If I can't get a link to post here, I will let you know what the title of the video is so you can search for it on YouTube. It is such an old backhoe, I need to video tape it in action while it still is operational. I'll get some detailed pics of the bucket functioning the ejector plate.

 

[RedDirt]

Ottawa, That's great! Looking forward to the video. Thanks for the efforts on your part. As seen from the number of views of this post there is more than a little interest in finding a bucket design that does not clog in clay.

As far as posting pictures here it is easy. Use the paper clip icon "attachment". In the attachments window browse to your photo(s) then click upload. When done uploading close the window. In your reply put the cursor where you want the photo then use the drop down box next to the paper clip to choose & insert your photo. Just remember to resize your photos first fairly small before uploading. Lots of folk here still run on dial-up and big photos are a deal breaker for some.

For those who are following this old post I did in fact build the banana bucket and it has worked fine for me. I built a 7" wide model as close as I could copy from photos earlier in this post. Maybe a "banana bucket" search will turn up the several posts where I have discussed it elsewhere.

 

[mwb]

I just searched for that patent number and found a site that allowed a PDF to be downloaded. Here it is for those who are interested.
View attachment US2764306.pdf

 

[RedDirt]

Thanks mwb,drawings 2 and 3 really help fill in the picture.

 

[1957MM445OttawaBackhoe]

RedDirt,

Thanks for the pic instructions. I made a video this last weekend. But, I have to get a cord that will let me download from my movie camera to my PC. I will get that this coming Friday. In the meantime, I have taken some pictures that will let you see the bucket design. I will get the video up this weekend.

Thanks for the Ottawa handle RedDirt!

Ottawa out!

 

[Kernopelli]

That is a neat old hoe, everything about it is unique. The ejector bucket, boom linkage/ hydraulics and the outrigger design. Very innovative, especially considering the era.......that's a keeper!