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
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - Grain Threshing in the Early 40's - by Jerry D. Coleman. How many of you can sit there and say that you have plowed with a mule? Well I would say not many, but maybe a few. This story is about the day my Grandfather Brown (true name) decided along with my parents to purchase a new Ford tractor. It wasn't really new except to us. The year was about 1967 and my father found a good used Ford 601 tractor to use on the farm instead of "Bob", our old mule. Now my grandfather had had this mule since the mid 40's and he was getting some age on him. S
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[More Ads]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
