Patent searches are among the things I don’t miss at all now that I am retired. However, a quick patent search showed several patents with applications in the early 1920’s with issue dates in the mid 20’s. These are all what I would consider to be in the “improvement” class of patents, so the general concept had to be around prior to 1920, so 100 year old technology seems to be about right.
US 1452286; Power-lift drill; Publication date Apr 17, 1923; Filing date Jul 15, 1920
US 1569878; Power lift for mower bars; Publication date Jan 19, 1926; Filing date Sep 19, 1921
US 1675433; Power lift plow; Publication date Jul 3, 1928; Filing date Oct 1, 1923
If you go into Google Patent Search with these patent numbers you see the drawings of the inventions that are quite interesting. I did a very quick search on the a couple names of the inventors in these patents to see if I could find prior art. I didn’t, but one of them at least had inventions as early as 1910. RND
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Today's Featured Article - Usin Your Implements: Bucket Loader - by Curtis Von Fange. Introduction: Dad was raised during the depression years of the thirties. As a kid he worked part time on a farm in Kansas doing many of the manual chores. Some of the more successful farmers of that day had a new time saving device called a tractor. It increased the farm productivity and, in general, made life easier because more work could be done with this 'mechanical beast'. My dad dreamed that some day he would have his own tractor with every implement he could get. When he rea
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