Пятница, 24 Апреля 2015 г. 19:13
+ в цитатник
This antique cast iron sharpener is marked WHITMAN & BARNES THE DIAMOND MADE IN U.S.A. PATENTED. It was made to sharpen the knives on a long bar Horse Drawn Hay Mower. The local Amish still use these mowers. The triangular knives riveted on the long bar had regular cutting edges in the past. This one is operated by a hand crank and a wire type chain that turned the gears that rotated the grinding stone. There is a spring loaded clamp that held the sickle bar. There is also a back attaching wing nut. This one is painted Allis Chalmers orange color. It appears operational but turns hard. I found "Whitman & Barnes, Mfg. Co. Akron, Ohio; Philadelphia, Pennsylvania 1848-1915" and "Sold by Whitman & Barnes, the "Diamond" was advertised in a 1900 issue of Farm Machinery." It is used with wear, rust, cast iron crack between Whitman & Barnes (seen in the last picture) and what appears to be newer paint in good condition. It measures 14 ½ inches wide where the bar is attached. I do not know how it was used but it appears to sharpen one side of 2 knifes which are pushed along to the next center area between knives. It is more of a collector's piece as newer replacement knives are serrated.
более подробное описание с применением
интересно, что в рабочем образце патент выдан от 1 июня 1897 (diamond whitman and barnes), а в статье только с 1900 указана на выставке.
страница с описанием производителя (davistown museum)
в каталоге патентов этот патент (от 1897) не указан
(patents for whitman and barnes manufacturing co)
впрочем, может быть, на сайте не все патенты, или написать им и спросить.