In 1952, Dempster decided to start production of a new windmill model. It was a back-geared wooden vaneless windmill designed to pump water on both the downstroke and th… Selling used original farm type water pumping windmills that have been restored. One difference was the diagonal steel brace connecting the weighted lever and the shifting rods to the top of the mast pipe. The other new mill was the Dempster Double-stroke Vaneless Irrigator. However, one simple truth stands undiminished by time or geography. 16 reduced the number of wheel blades to help in high wind conditions. In 1900, the company reduced the sizes in the Dempster Irrigator and the Dempster Double-Stroke Irrigator mills. By the 1880s, wooden vaneless windmills were growing in popularity across the central Great Plains. The windmill weight is a key component of a vaneless windmill, the production of which dates to the late 1880s. Dempster No. The Dempster Mill Manufacturing Company sold its Original Dempster Vaneless windmills in 10, 12, and 14-foot diameters. 11 and the Introduction of Self-Oiling Technology to Windmills of the Dempster Mill Mfg. By the mid-1910s, windmill manufacturers began marketing self-lubricating “oil bath” metal windmills. Download Here. All towers will have a new wooden platform on them. Baker, T. Lindsay. But here are the basics of how a wind-powered water pump works: The wind turns the fan at the top of the windmill. The back-geared mills began operating in lower win speeds than the older-style direct-stroke mills like the No. Patents for windmill and windmill related devices dating back to the early 1800's. We've also acquired a huge collection of U.S. Every Windmill taken in is completely cleaned and disassembled. The first is the vane windmill that uses a vane or tail to guide the wheel into the wind. 2012. These were created in response to farmers using windmills to pump water for irrigating crops. There was debate between which was better as back-geared were thought to run better in lighter winds. The Dempster Vaneless Irrigator was a heavy-duty variant of the Original Dempster Vaneless made in 12, 14, and 16-foot diameters. The main casting on the Dempster No. 2010. 4 Vaneless windmills were popular across the Great Plains including the prairie provinces of Canada. The three remaining windmill manufacturers—Aermotor, Baker, and Dempster—went from producing a couple hundred windmills per year each to several thousand. To increase efficiency of production, the cast iron horse figures were simplified to have short tails instead. In 1916, the Dempster Mill Manufacturing Company introduced another vaneless mill, the Dempster No. The oil would flow back to the reservoir to be used again in a constant cycle of lubrication. 12. Until this time, windmill users had to climb windmill towers regularly to grease or oil all the mechanical parts. The Double-Stroke Irrigator disappeared by 1905 and the Dempster Irrigator mill was discontinued in 1917. This allowed them to govern the speed of the mills as the wind changed. As the windmill worked, the oil would continuously lubricate all the moving parts of the mill. This model was meant to completely replace the No. It lifted lubricant with each stroke from the oil reservoir into the main bearings. Nebraska Windmills. Aermotor Windmill has continuously manufactured windmills since 1888 and is the only windmill manufacturer in the USA. Americanlisted has classifieds in Jolly Acres, South Dakota for art and antiques, Classical Antiquities, Contemporary, Impressionist, old masters, modern art, new artists and art historians. The motor pulls a pump rod up and down. The wood and steel parts were interchangeable on the same sizes of mills. This design was not efficient. Record ID SILNMAHTL_13797 Topic (Romaine term) Agricultural tools and machinery Well drilling equipment: water; oil; etc. The fan turns a set of gears called the motor. 12 mill with Timken roller bearings in six, eight, ten, and twelve-foot styles replaced this pattern in 1925. Baker, T. Lindsay. This is the same principle used in the automobile engines. 11 was made in ten, twelve, and fourteen-foot sizes. This restored Dempster Vaneless #3, was originally built by the Dempster Mill Manufacturing Company in Beatrice, Nebraska, between 1912 and 1917. This version remained in production until the company stopped manufacturing windmills around 2009. The Dempster Vaneless Irrigator was available in 14 and 16-foot diameters, while the Double-Stroke Vaneless Irrigator was only made in the 12-foot size. Contact 800-854-1656 sales@aermotorwindmill.com. 14 served as its oil reservoir. for sale, It is a 8ft -12 A Dempster windmill with metal blades and metal wood & tower. The company created another new vaneless wooden mill, the Dempster No. The most popular and longest running windmill created by Dempster Mill Manufacturing Company was the No. This design must have presented problems for the company as they discontinued the No. 16 Annu-Oiled was similar to the No. It was unlike any other windmill on the American market. A Dempster No. National Park Service. Dempster 12 Replacement; Dempster Number 9 Wooden Wheel; Wooden Vaneless Windmill for Museum; Flint and Walling Model 12; Flint and Walling Model 37; Photos of Windmill Tail Art; Fun Windmill Photos. At American Windmills, we pride ourselves on our original Chicago Aermotor Windmills. Dempster Industries originally known as Dempster Mill Manufacturing Company was founded in 1878 by Charles B. Dempster and located in Beatrice, Nebraska. Exceptionally nice vintage blades and tail vane. The Dempster No. Customers did not want to have to climb their towers to lubricate their mills every week. The moving parts of the mill brought oil to the other moving sections. The Dempster No. Unfortunately, the new mill was not well received. This was Dempster’s attempt to keep up with the trend of self-oiling windmills. Customer initially had the option of ordering the mills with or without counterbalances. Introduced in 1922 and in production until the 21st century, the Dempster No. Click and view. Windmillers’ Gazette. Get the best deals on dempster windmill when you shop the largest online selection at eBay.com. National Park Service. XXIX, No. The Dempster Mill Manufacturing Company marketed the No. 4 (Autumn 2010) p.6-9. vaneless wood windmill regulating it's speed in the wind. Home Why … PHOTOS. Therefore, Dempster began focusing on developing back-geared oil-bath designs, resulting in the Dempster No. Self-oiling windmills had an enclosed gearbox with an oil-bath reservoir. This lessened the wheel surface exposed to the wind and created a large opening in the center, slowing the rotation speed of the wheel. The No. 15, such as the vane design and governing system were similar to the No. The Dempster Vaneless Irrigator was a heavy-duty variant of the Original Dempster Vaneless made in 12, 14, and 16-foot diameters. Some were designed for ordinary farm and ranch use, while two heavy-duty models were produced for larger-volume pumping of irrigation water. 12 was Dempster’s first self-oiling back-geared windmill. The Dempster No. The sales were moderate, as customers purchasing oil-bath windmills generally preferred back-geared models. I also have towers available in 20' - 40' lengths. The other new mill was the Dempster Double-stroke Vaneless Irrigator. The blade design and angles were different from the No. “It looked pretty bad. 4 (Autumn 2012) p.2-7. Baker, T. Lindsay. The Dempster No. 2011. 3) Remove the pipe plug, and with a big flat screw driver, remove the oil collector. Of course, windmills underwent several changes over the years, one of the most significant being a switch from wood to steel in construction. This was followed by the introduction of eight and twelve-foot models the next year. The 10-foot size was produced first because the 10-foot No. Their movement somewhat resembled the opening and closing of an umbrella. The Beatrice. In 1896. the company introduced two large vaneless models. The Original Dempster Vaneless mill used a sectional wheel made up of thin wooden blades. There are two types of windmills. It was a back-geared wooden vaneless windmill designed to pump water on both the downstroke and the upstroke. 11. Because they had no vanes or tails to direct them into the wind, their wheel operated downwind. 3 mills had one major cosmetic change. This spring kept the wheel sections squarely facing light winds. The short-stroke twelve-foot mills were later replaced by a long-stroke twelve-foot mills in 1929. For over fifty years, the Dempster Mill Manufacturing Company produced vaneless windmills. In February 1981, the manufacturer introduced a new diamond-shaped steel vane based on the design of the company logo. 3. I have rebuilt them all to work or just for rustic decor. I'd speculate the confusion was likely due to the central ironwork on the Banner being very similar to the Capital vaneless. The stronger the wind, the more the blades tended to push backward, a tendency enhanced by centrifugal force. We've reproduced a number of them on 8 1/2" X 11" parchment paper. The Dempster No. The company kept this color scheme from this time onward. Many people would have a hard time distinguishing between a Banner, Dempster no 1, and a Capital vaneless if the weights were not there. As you know, all these are rare enough that identification isn't the easiest. The irrigator mills were the first Dempster vaneless mills to use a counterbalance weight. 12 Annu-Oiled Windmill. 14 holds the distinction of being the only widely sold oil-bath vanless mill produced in America. Descriptive Guide. Grim’s neighbor discovered the Dempster windmill on a scrap pile at a local recycling company, and gave him a call. The Dempster No. The metal wheel was similar to the Dempster No. Made in 10 and 12-foot diameters, it used a similar counterbalance with a long-tailed horse and weight box. In 1896. the company introduced two large vaneless models. The Dempster Mill Manufacturing Company watched the developments taking place. The mill was never released in other sizes and the 10-foot No. Dempster Windmill Parts on auction | BigIron Auctions. 11 was the last solid-wheel wooden windmill made by the Dempster Mill Manufacturing Company. Materials handling equipment (includes barrels; bottling and filling; casters; chains; etc.) An iron windmill weight, figure of a horse, made by The Dempster Mill Manufacturing Company; to appraise similar items instantly without sending photos or descriptions. The development of a windmill that could oil itself was the most important technological innovation in water-pumping windmills during the twentieth century. The crank plate rotates in the oil reservoir. Dempster Mill Manufacturing Company Records, 1878-2010. To turn off the mill, a wire was pulled to lift the weighted lever and draw the wheel sections out of the wind. Many elements of the Dempster No. 1 and No. 14 oil-bath vaneless mills through the 1920s and 1930s, though they never were big sellers. To find parts for a specific mill, type in the mfg name in the search box. "When Marketing Overwhelmed Engineering: The Story of the 'Dempster Diamond' Vane Sheet." I have new, used or re-galvanized. […] This mill was the first to use the distinctive horse-shaped figure mounted on tops of metal boxes as a counterbalance weight. The History of an American Icon - Aermotor Windmill Aermotor Windmill has a very interesting 118 year business history. Download Here. The steel pattern was produced in these sizes plus a smaller eight-foot diameter pattern. p. 192-197. If you get the Windmill, you can also look on the How to install the Windmill, tower and hand pump page for LOADS of hints! 2 can be distinguished by its unusual profile. These mills were made in 10 and 12-foot diameters. 2 Vaneless in 1905. Decent lettering on tail (both sides), Thought to be 100% complete with tower castings, motor, wheel arms, mast pipe, gov. Homestead National Monument of America. 1, Box 8-a, Rocky, Oklahoma 73661 , USA … Other Historical Windmill Projects. The wheels were dipped in white lead paint and the blade tips trimmed in red. 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